Merge ganttzk module with ZK branch.

ganttzk/pom.xml

@@ -1,6 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 
     <modelVersion>4.0.0</modelVersion>
     <parent>
@@ -37,6 +37,7 @@
                             </execution>
                         </executions>
                     </plugin>
+
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-source-plugin</artifactId>
@@ -50,6 +51,7 @@
                                 </goals>
                             </execution>
                         </executions>
+
                     </plugin>
                 </plugins>
             </build>
@@ -89,17 +91,19 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>
-         </dependency>
+        </dependency>
 
         <!-- ZK  -->
         <dependency>
             <groupId>org.zkoss.zk</groupId>
             <artifactId>zul</artifactId>
         </dependency>
+
         <dependency>
             <groupId>org.zkoss.zk</groupId>
             <artifactId>zkplus</artifactId>
         </dependency>
+
         <dependency>
             <groupId>org.zkoss.zk</groupId>
             <artifactId>zk</artifactId>
@@ -123,6 +127,7 @@
             <artifactId>easymock</artifactId>
             <scope>test</scope>
         </dependency>
+
         <dependency>
             <groupId>org.easymock</groupId>
             <artifactId>easymockclassextension</artifactId>

ganttzk/src/main/java/org/zkoss/ganttz/CommandContextualized.java

@@ -24,17 +24,11 @@ package org.zkoss.ganttz;
 import org.apache.commons.lang3.StringUtils;
 import org.zkoss.ganttz.extensions.ICommand;
 import org.zkoss.ganttz.extensions.IContext;
-import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.event.Events;
 import org.zkoss.zul.Button;
 
 class CommandContextualized<T> {
 
-    public static <T> CommandContextualized<T> create(ICommand<T> command, IContext<T> context) {
-        return new CommandContextualized<T>(command, context);
-    }
-
     private final ICommand<T> command;
 
     private final IContext<T> context;
@@ -46,6 +40,10 @@ class CommandContextualized<T> {
         this.context = context;
     }
 
+    public static <T> CommandContextualized<T> create(ICommand<T> command, IContext<T> context) {
+        return new CommandContextualized<>(command, context);
+    }
+
     public void doAction() {
         command.doAction(context);
     }
@@ -66,12 +64,7 @@ class CommandContextualized<T> {
         if ( command.isDisabled() ) {
             result.setDisabled(true);
         } else {
-            result.addEventListener(Events.ON_CLICK, new EventListener() {
-                @Override
-                public void onEvent(Event event) {
-                    doAction();
-                }
-            });
+            result.addEventListener(Events.ON_CLICK, event -> doAction());
         }
 
         button = result;

ganttzk/src/main/java/org/zkoss/ganttz/CommandOnTaskContextualized.java

@@ -29,29 +29,33 @@ import org.zkoss.ganttz.extensions.ICommandOnTask;
 import org.zkoss.ganttz.extensions.IContext;
 import org.zkoss.ganttz.extensions.IContextWithPlannerTask;
 import org.zkoss.ganttz.util.MenuBuilder.ItemAction;
-import org.zkoss.zk.ui.event.Event;
 
 public class CommandOnTaskContextualized<T> {
 
-    public static <T> CommandOnTaskContextualized<T> create(ICommandOnTask<T> commandOnTask,
-                                                            IDomainAndBeansMapper<T> mapper, IContext<T> context) {
-
-        return new CommandOnTaskContextualized<T>(commandOnTask, mapper, context);
-    }
-
     private final ICommandOnTask<T> commandOnTask;
 
     private final IContext<T> context;
 
     private final IDomainAndBeansMapper<T> mapper;
 
-    private CommandOnTaskContextualized(ICommandOnTask<T> commandOnTask, IDomainAndBeansMapper<T> mapper,
+    private CommandOnTaskContextualized(ICommandOnTask<T> commandOnTask,
+                                        IDomainAndBeansMapper<T> mapper,
                                         IContext<T> context) {
+
         this.commandOnTask = commandOnTask;
         this.mapper = mapper;
         this.context = context;
     }
 
+    public static <T> CommandOnTaskContextualized<T> create(ICommandOnTask<T> commandOnTask,
+                                                            IDomainAndBeansMapper<T> mapper,
+                                                            IContext<T> context) {
+
+        return new CommandOnTaskContextualized<>(commandOnTask, mapper, context);
+    }
+
+
+
     public void doAction(TaskComponent taskComponent) {
         doAction(
                 ContextRelativeToOtherComponent.makeRelativeTo(context, taskComponent),
@@ -82,12 +86,7 @@ public class CommandOnTaskContextualized<T> {
     }
 
     ItemAction<TaskComponent> toItemAction() {
-        return new ItemAction<TaskComponent>() {
-            @Override
-            public void onEvent(TaskComponent choosen, Event event) {
-                doAction(choosen);
-            }
-        };
+        return (chosen, event) -> doAction(chosen);
     }
 
     public String getIcon() {
@@ -95,8 +94,7 @@ public class CommandOnTaskContextualized<T> {
     }
 
     public boolean accepts(TaskComponent taskComponent) {
-        T domainObject = domainObjectFor(taskComponent.getTask());
-        return commandOnTask.isApplicableTo(domainObject);
+        return commandOnTask.isApplicableTo(domainObjectFor(taskComponent.getTask()));
     }
 
     public IDomainAndBeansMapper<T> getMapper() {

ganttzk/src/main/java/org/zkoss/ganttz/DependencyList.java

@@ -27,8 +27,6 @@ import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.zkoss.ganttz.data.Dependency;
 import org.zkoss.ganttz.data.DependencyType;
 import org.zkoss.ganttz.data.Task;
@@ -39,6 +37,7 @@ import org.zkoss.ganttz.timetracker.zoom.ZoomLevel;
 import org.zkoss.ganttz.util.ComponentsFinder;
 import org.zkoss.ganttz.util.MenuBuilder;
 import org.zkoss.ganttz.util.MenuBuilder.ItemAction;
+import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.event.Event;
 import org.zkoss.zk.ui.ext.AfterCompose;
 import org.zkoss.zul.Menupopup;
@@ -51,8 +50,8 @@ import org.zkoss.zul.impl.XulElement;
  */
 public class DependencyList extends XulElement implements AfterCompose {
 
-    private final class ChangeTypeAction implements
-            ItemAction<DependencyComponent> {
+    private final class ChangeTypeAction implements ItemAction<DependencyComponent> {
+
         private final DependencyType type;
 
         private ChangeTypeAction(DependencyType type) {
@@ -60,32 +59,28 @@ public class DependencyList extends XulElement implements AfterCompose {
         }
 
         @Override
-        public void onEvent(final DependencyComponent choosen, Event event) {
-            boolean canBeAdded = context.changeType(choosen.getDependency(),
-                    type);
-            if (!canBeAdded) {
+        public void onEvent(final DependencyComponent chosen, Event event) {
+            boolean canBeAdded = context.changeType(chosen.getDependency(), type);
+
+            if ( !canBeAdded ) {
                 warnUser(_("The specified dependency is not allowed"));
             }
         }
 
         private void warnUser(String message) {
-            try {
-                Messagebox.show(message, null, Messagebox.OK,
-                        Messagebox.EXCLAMATION, 0, null);
-            } catch (InterruptedException e) {
-                throw new RuntimeException(e);
-            }
+            Messagebox.show(message, null, Messagebox.OK, Messagebox.EXCLAMATION, 0, null);
         }
     }
 
-    private final class DependencyVisibilityToggler implements
-            PropertyChangeListener {
+    private final class DependencyVisibilityToggler implements PropertyChangeListener {
+
         private final Task source;
+
         private final Task destination;
+
         private final DependencyComponent dependencyComponent;
 
-        private DependencyVisibilityToggler(Task source, Task destination,
-                DependencyComponent dependencyComponent) {
+        private DependencyVisibilityToggler(Task source, Task destination, DependencyComponent dependencyComponent) {
             this.source = source;
             this.destination = destination;
             this.dependencyComponent = dependencyComponent;
@@ -93,16 +88,17 @@ public class DependencyList extends XulElement implements AfterCompose {
 
         @Override
         public void propertyChange(PropertyChangeEvent evt) {
-            if (!evt.getPropertyName().equals("visible")) {
+            if ( !"visible".equals(evt.getPropertyName()) ) {
                 return;
             }
-            if (dependencyMustBeVisible() != isDependencyNowVisible()) {
+
+            if ( dependencyMustBeVisible() != isDependencyNowVisible() ) {
                 toggleDependencyExistence(dependencyMustBeVisible());
             }
         }
 
         void toggleDependencyExistence(boolean visible) {
-            if (visible) {
+            if ( visible ) {
                 appendChild(dependencyComponent);
                 dependencyComponent.afterCompose();
                 addContextMenu(dependencyComponent);
@@ -120,8 +116,6 @@ public class DependencyList extends XulElement implements AfterCompose {
         }
     }
 
-    private static final Log LOG = LogFactory.getLog(DependencyList.class);
-
     private transient IZoomLevelChangedListener listener;
 
     private final FunctionalityExposedForExtensions<?> context;
@@ -135,33 +129,32 @@ public class DependencyList extends XulElement implements AfterCompose {
     }
 
     private List<DependencyComponent> getDependencyComponents() {
-        List<Object> children = getChildren();
-        return ComponentsFinder
-                .findComponentsOfType(DependencyComponent.class, children);
+        List<Component> children = getChildren();
+        return ComponentsFinder.findComponentsOfType(DependencyComponent.class, children);
     }
 
     void addDependencyComponent(final DependencyComponent dependencyComponent) {
         TaskComponent source = dependencyComponent.getSource();
         TaskComponent destination = dependencyComponent.getDestination();
-        DependencyVisibilityToggler visibilityToggler = new DependencyVisibilityToggler(
-                source.getTask(), destination.getTask(), dependencyComponent);
-        source.getTask().addVisibilityPropertiesChangeListener(
-                visibilityToggler);
-        destination.getTask().addVisibilityPropertiesChangeListener(
-                visibilityToggler);
+
+        DependencyVisibilityToggler visibilityToggler =
+                new DependencyVisibilityToggler(source.getTask(), destination.getTask(), dependencyComponent);
+
+        source.getTask().addVisibilityPropertiesChangeListener(visibilityToggler);
+        destination.getTask().addVisibilityPropertiesChangeListener(visibilityToggler);
         dependencyComponent.setVisibilityChangeListener(visibilityToggler);
-        boolean dependencyMustBeVisible = visibilityToggler
-                .dependencyMustBeVisible();
+
+        boolean dependencyMustBeVisible = visibilityToggler.dependencyMustBeVisible();
         visibilityToggler.toggleDependencyExistence(dependencyMustBeVisible);
-        if (dependencyMustBeVisible) {
+
+        if ( dependencyMustBeVisible ) {
             dependencyComponent.redrawDependency();
         }
     }
 
     private void addContextMenu(DependencyComponent dependencyComponent) {
-        Menupopup contextMenu = dependencyComponent.hasLimitingTasks() ?
-                getLimitingContextMenu()
-                : getContextMenu();
+        Menupopup contextMenu = dependencyComponent.hasLimitingTasks() ? getLimitingContextMenu() : getContextMenu();
+
         dependencyComponent.setContext(contextMenu);
     }
 
@@ -169,8 +162,7 @@ public class DependencyList extends XulElement implements AfterCompose {
         return (GanttPanel) getParent();
     }
 
-    public void setDependencyComponents(
-            List<DependencyComponent> dependencyComponents) {
+    void setDependencyComponents(List<DependencyComponent> dependencyComponents) {
         for (DependencyComponent dependencyComponent : dependencyComponents) {
             addDependencyComponent(dependencyComponent);
         }
@@ -178,11 +170,13 @@ public class DependencyList extends XulElement implements AfterCompose {
 
     @Override
     public void afterCompose() {
-        if (listener == null) {
+        if ( listener == null ) {
+
+            /* Do not replace it with lambda */
             listener = new IZoomLevelChangedListener() {
                 @Override
                 public void zoomLevelChanged(ZoomLevel detailLevel) {
-                    if (!isInPage()) {
+                    if ( !isInPage() ) {
                         return;
                     }
                     for (DependencyComponent dependencyComponent : getDependencyComponents()) {
@@ -190,14 +184,15 @@ public class DependencyList extends XulElement implements AfterCompose {
                     }
                 }
             };
+
             getTimeTracker().addZoomListener(listener);
         }
+
         addContextMenu();
     }
 
     private boolean isInPage() {
-        return getParent() != null && getGanttPanel() != null
-                && getGanttPanel().getParent() != null;
+        return getParent() != null && getGanttPanel() != null && getGanttPanel().getParent() != null;
     }
 
     private TimeTracker getTimeTracker() {
@@ -211,54 +206,39 @@ public class DependencyList extends XulElement implements AfterCompose {
     }
 
     private Menupopup getLimitingContextMenu() {
-        if (limitingContextMenu == null) {
-            MenuBuilder<DependencyComponent> contextMenuBuilder = MenuBuilder
-                    .on(getPage(), getDependencyComponents()).item(_("Erase"),
+        if ( limitingContextMenu == null ) {
+
+            MenuBuilder<DependencyComponent> contextMenuBuilder =
+                    MenuBuilder.on(getPage(), getDependencyComponents()).item(
+                            _("Erase"),
                             "/common/img/ico_borrar.png",
-                            new ItemAction<DependencyComponent>() {
-                                @Override
-                                public void onEvent(
-                                        final DependencyComponent choosen,
-                                        Event event) {
-                                    context
-                                            .removeDependency(choosen.getDependency());
-                                }
-                            });
+                            (chosen, event) -> context.removeDependency(chosen.getDependency()));
+
             limitingContextMenu = contextMenuBuilder.create();
         }
+
         return limitingContextMenu;
     }
 
     private Menupopup getContextMenu() {
-        if (contextMenu == null) {
-            MenuBuilder<DependencyComponent> contextMenuBuilder = MenuBuilder
-                    .on(getPage(), getDependencyComponents()).item(_("Erase"),
+        if ( contextMenu == null ) {
+
+            MenuBuilder<DependencyComponent> contextMenuBuilder =
+                    MenuBuilder.on(getPage(), getDependencyComponents()).item(
+                            _("Erase"),
                             "/common/img/ico_borrar.png",
-                            new ItemAction<DependencyComponent>() {
-                                @Override
-                                public void onEvent(
-                                        final DependencyComponent choosen,
-                                        Event event) {
-                                    context
-                                            .removeDependency(choosen.getDependency());
-                                }
-                            });
+                            ((chosen, event) -> context.removeDependency(chosen.getDependency())));
 
-            contextMenuBuilder.item(_("Set End-Start"), null,
-                    new ChangeTypeAction(
-                    DependencyType.END_START));
+            contextMenuBuilder.item(_("Set End-Start"), null, new ChangeTypeAction(DependencyType.END_START));
 
-            contextMenuBuilder.item(_("Set Start-Start"), null,
-                    new ChangeTypeAction(
-                    DependencyType.START_START));
+            contextMenuBuilder.item(_("Set Start-Start"), null, new ChangeTypeAction(DependencyType.START_START));
 
-            contextMenuBuilder.item(_("Set End-End"), null,
-                    new ChangeTypeAction(
-                    DependencyType.END_END));
+            contextMenuBuilder.item(_("Set End-End"), null, new ChangeTypeAction(DependencyType.END_END));
 
             contextMenu = contextMenuBuilder.create();
 
         }
+
         return contextMenu;
     }
 
@@ -266,48 +246,45 @@ public class DependencyList extends XulElement implements AfterCompose {
         return getGanttPanel().getTimeTrackerComponent();
     }
 
-    public void redrawDependencies() {
+    void redrawDependencies() {
         redrawDependencyComponents(getDependencyComponents());
     }
 
-    public void redrawDependencyComponents(
-            List<DependencyComponent> dependencyComponents) {
+    private void redrawDependencyComponents(List<DependencyComponent> dependencyComponents) {
         for (DependencyComponent dependencyComponent : dependencyComponents) {
             dependencyComponent.redrawDependency();
         }
     }
 
-    public void taskRemoved(Task task) {
-        for (DependencyComponent dependencyComponent : DependencyList.this
-                .getDependencyComponents()) {
-            if (dependencyComponent.contains(task)) {
+    void taskRemoved(Task task) {
+        for (DependencyComponent dependencyComponent : DependencyList.this.getDependencyComponents()) {
+            if ( dependencyComponent.contains(task) ) {
                 removeDependencyComponent(dependencyComponent);
             }
         }
     }
 
     public void remove(Dependency dependency) {
-        for (DependencyComponent dependencyComponent : DependencyList.this
-                .getDependencyComponents()) {
-            if (dependencyComponent.hasSameSourceAndDestination(dependency)) {
+        for (DependencyComponent dependencyComponent : DependencyList.this.getDependencyComponents()) {
+            if ( dependencyComponent.hasSameSourceAndDestination(dependency) ) {
                 removeDependencyComponent(dependencyComponent);
             }
         }
     }
 
     private void removeDependencyComponent(DependencyComponent dependencyComponent) {
-        //remove the visibility listener attached to the tasks
+        // Remove the visibility listener attached to the tasks
         TaskComponent source = dependencyComponent.getSource();
         TaskComponent destination = dependencyComponent.getDestination();
-        PropertyChangeListener listener =
-                dependencyComponent.getVisibilityChangeListener();
+        PropertyChangeListener listener = dependencyComponent.getVisibilityChangeListener();
+
         source.getTask().removeVisibilityPropertiesChangeListener(listener);
         destination.getTask().removeVisibilityPropertiesChangeListener(listener);
 
-        //remove other change listeners
+        // Remove other change listeners
         dependencyComponent.removeChangeListeners();
 
-        //remove the dependency itself
+        // Remove the dependency itself
         this.removeChild(dependencyComponent);
     }
 }

ganttzk/src/main/java/org/zkoss/ganttz/GanttPanel.java

@@ -60,56 +60,60 @@ public class GanttPanel extends XulElement implements AfterCompose {
             CommandOnTaskContextualized<?> doubleClickCommand,
             IDisabilityConfiguration disabilityConfiguration,
             FilterAndParentExpandedPredicates predicate) {
+
         this.planner = planner;
-        FunctionalityExposedForExtensions<?> context = (FunctionalityExposedForExtensions<?>) planner
-                .getContext();
+        FunctionalityExposedForExtensions<?> context = (FunctionalityExposedForExtensions<?>) planner.getContext();
+
         if (planner.isShowingCriticalPath()) {
             context.showCriticalPath();
         }
+
         this.diagramGraph = context.getDiagramGraph();
-        timeTrackerComponent = timeTrackerForGanttPanel(context
-                .getTimeTracker());
+        timeTrackerComponent = timeTrackerForGanttPanel(context.getTimeTracker());
+
         appendChild(timeTrackerComponent);
         dependencyList = new DependencyList(context);
-        tasksLists = TaskList.createFor(context, doubleClickCommand,
-                commandsOnTasksContextualized, disabilityConfiguration,
-                predicate);
+
+        tasksLists = TaskList.createFor(
+                context, doubleClickCommand, commandsOnTasksContextualized, disabilityConfiguration, predicate);
+
         appendChild(tasksLists);
         appendChild(dependencyList);
     }
 
-    private TimeTrackerComponent timeTrackerForGanttPanel(
-            TimeTracker timeTracker) {
+    private TimeTrackerComponent timeTrackerForGanttPanel(TimeTracker timeTracker) {
         return new TimeTrackerComponent(timeTracker) {
             @Override
             protected void scrollHorizontalPercentage(int daysDisplacement) {
-                response("scroll_horizontal", new AuInvoke(GanttPanel.this,
-                        "scroll_horizontal", "" + daysDisplacement));
+
+                response(
+                        "scroll_horizontal",
+                        new AuInvoke(GanttPanel.this, "scroll_horizontal", Integer.toString(daysDisplacement)));
+
                 moveCurrentPositionScroll();
             }
 
             // FIXME: this is quite awful, it should be simple
             @Override
             protected void moveCurrentPositionScroll() {
-                // get the previous data.
+                // Get the previous data.
                 LocalDate previousStart = getPreviousStart();
 
-                // get the current data
-                int diffDays = getTimeTrackerComponent().getDiffDays(
-                        previousStart);
+                // Get the current data
+                int diffDays = getTimeTrackerComponent().getDiffDays(previousStart);
                 double pixelPerDay = getTimeTrackerComponent().getPixelPerDay();
 
-                response("move_scroll", new AuInvoke(GanttPanel.this,
-                        "move_scroll", "" + diffDays, "" + pixelPerDay));
+                response("move_scroll", new AuInvoke(GanttPanel.this, "move_scroll",
+                        Integer.toString(diffDays),
+                        Double.toString(pixelPerDay)));
             }
 
             protected void updateCurrentDayScroll() {
-                double previousPixelPerDay = getTimeTracker().getMapper()
-                        .getPixelsPerDay()
-                        .doubleValue();
+                double previousPixelPerDay = getTimeTracker().getMapper().getPixelsPerDay().doubleValue();
 
-                response("update_day_scroll", new AuInvoke(GanttPanel.this,
-                        "update_day_scroll", "" + previousPixelPerDay));
+                response(
+                        "update_day_scroll",
+                        new AuInvoke(GanttPanel.this, "update_day_scroll", Double.toString(previousPixelPerDay)));
 
             }
 
@@ -119,14 +123,16 @@ public class GanttPanel extends XulElement implements AfterCompose {
     @Override
     public void afterCompose() {
         tasksLists.afterCompose();
-        dependencyList.setDependencyComponents(tasksLists
-                .asDependencyComponents(diagramGraph.getVisibleDependencies()));
+
+        dependencyList.setDependencyComponents(
+                tasksLists.asDependencyComponents(diagramGraph.getVisibleDependencies()));
+
         timeTrackerComponent.afterCompose();
         dependencyList.afterCompose();
         savePreviousData();
+
         if (planner.isExpandAll()) {
-            FunctionalityExposedForExtensions<?> context = (FunctionalityExposedForExtensions<?>) planner
-                    .getContext();
+            FunctionalityExposedForExtensions<?> context = (FunctionalityExposedForExtensions<?>) planner.getContext();
             context.expandAll();
         }
 
@@ -141,6 +147,7 @@ public class GanttPanel extends XulElement implements AfterCompose {
         for (Task task : this.tasksLists.getAllTasks()) {
             task.updateTooltipText();
         }
+
         for (TaskComponent taskComponent : this.tasksLists.getTaskComponents()) {
             taskComponent.invalidate();
         }
@@ -195,12 +202,7 @@ public class GanttPanel extends XulElement implements AfterCompose {
 
     private void registerZoomLevelChangedListener() {
         if (zoomLevelChangedListener == null) {
-            zoomLevelChangedListener = new IZoomLevelChangedListener() {
-                @Override
-                public void zoomLevelChanged(ZoomLevel detailLevel) {
-                    adjustZoomColumnsHeight();
-                }
-            };
+            zoomLevelChangedListener = detailLevel -> adjustZoomColumnsHeight();
             getTimeTracker().addZoomListener(zoomLevelChangedListener);
         }
     }

ganttzk/src/main/java/org/zkoss/ganttz/IDatesMapper.java

@@ -28,7 +28,7 @@ import org.zkoss.ganttz.util.Interval;
 
 public interface IDatesMapper {
 
-    final long MILISECONDS_PER_HOUR = 3600000;
+    long MILISECONDS_PER_HOUR = 3600000;
 
     int toPixels(LocalDate date);
 

ganttzk/src/main/java/org/zkoss/ganttz/LeftPane.java

@@ -31,14 +31,13 @@ import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.HtmlMacroComponent;
 
 /**
- * LeftPane of the planner. Responsible of showing global commands and the
- * leftTasksTree <br />
+ * LeftPane of the planner. Responsible of showing global commands and the leftTasksTree
+ * <br />
+ *
  * @author Óscar González Fernández <ogonzalez@igalia.com>
  */
 public class LeftPane extends HtmlMacroComponent {
 
-    private final List<Task> topLevelTasks;
-
     private LeftTasksTree leftTasksTree;
 
     private final IDisabilityConfiguration disabilityConfiguration;
@@ -47,16 +46,14 @@ public class LeftPane extends HtmlMacroComponent {
 
     private Planner planner;
 
-    public void setGoingDownInLastArrowCommand(
-            CommandContextualized<?> goingDownInLastArrowCommand) {
-        this.leftTasksTree
-                .setGoingDownInLastArrowCommand(goingDownInLastArrowCommand);
+    public void setGoingDownInLastArrowCommand(CommandContextualized<?> goingDownInLastArrowCommand) {
+        this.leftTasksTree.setGoingDownInLastArrowCommand(goingDownInLastArrowCommand);
     }
 
     public LeftPane(IDisabilityConfiguration disabilityConfiguration,
-            Planner planner,
-            FilterAndParentExpandedPredicates predicate) {
-        this.topLevelTasks = planner.getDiagramGraph().getTopLevelTasks();
+                    Planner planner,
+                    FilterAndParentExpandedPredicates predicate) {
+
         this.disabilityConfiguration = disabilityConfiguration;
         this.predicate = predicate;
         this.planner = planner;
@@ -65,15 +62,14 @@ public class LeftPane extends HtmlMacroComponent {
     @Override
     public void afterCompose() {
         super.afterCompose();
-        leftTasksTree = new LeftTasksTree(disabilityConfiguration, planner,
-                predicate);
+
+        leftTasksTree = new LeftTasksTree(disabilityConfiguration, planner, predicate);
         getContainer().appendChild(leftTasksTree);
         leftTasksTree.afterCompose();
     }
 
     private Component getContainer() {
-        Component container = getFellow("listdetails_container");
-        return container;
+        return getFellow("listdetails_container");
     }
 
     public void taskRemoved(Task task) {

ganttzk/src/main/java/org/zkoss/ganttz/LeftTasksTree.java

@@ -23,39 +23,32 @@ package org.zkoss.ganttz;
 
 import java.lang.reflect.Method;
 import java.util.ArrayList;
-import java.util.Arrays;
+import java.util.Collections;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
-import java.util.ListIterator;
 import java.util.Map;
 import java.util.Set;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.zkoss.ganttz.LeftTasksTreeRow.ILeftTasksTreeNavigator;
 import org.zkoss.ganttz.adapters.IDisabilityConfiguration;
 import org.zkoss.ganttz.data.Position;
 import org.zkoss.ganttz.data.Task;
 import org.zkoss.ganttz.data.TaskContainer;
 import org.zkoss.ganttz.data.TaskContainer.IExpandListener;
-import org.zkoss.ganttz.util.ComponentsFinder;
 import org.zkoss.ganttz.util.MutableTreeModel;
 import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.Executions;
 import org.zkoss.zk.ui.HtmlMacroComponent;
-import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.event.OpenEvent;
 import org.zkoss.zul.Tree;
-import org.zkoss.zul.TreeModel;
-import org.zkoss.zul.Treecell;
 import org.zkoss.zul.Treeitem;
 import org.zkoss.zul.TreeitemRenderer;
 
 /**
- * Tree element to display tasks structure in the planning Gantt <br />
+ * Tree element to display tasks structure in the planning Gantt.
+ * <br />
  *
  * @author Óscar González Fernández <ogonzalez@igalia.com>
  * @author Manuel Rego Casasnovas <mrego@igalia.com>
@@ -63,258 +56,8 @@ import org.zkoss.zul.TreeitemRenderer;
  */
 public class LeftTasksTree extends HtmlMacroComponent {
 
-    private final class TaskBeanRenderer implements TreeitemRenderer {
-        private Map<TaskContainer, IExpandListener> expandListeners = new HashMap<TaskContainer, IExpandListener>();
-
-        public void render(final Treeitem item, Object data) throws Exception {
-            Task task = (Task) data;
-            item.setOpen(isOpened(task));
-
-            if ( task instanceof TaskContainer ) {
-
-                final TaskContainer container = (TaskContainer) task;
-
-                IExpandListener expandListener = new IExpandListener() {
-
-                    @Override
-                    public void expandStateChanged(boolean isNowExpanded) {
-                        item.setOpen(isNowExpanded);
-                    }
-                };
-
-                expandListeners.put(container, expandListener);
-                container.addExpandListener(expandListener);
-
-            }
-            LeftTasksTreeRow leftTasksTreeRow = LeftTasksTreeRow
-                    .create(disabilityConfiguration, task, new TreeNavigator(tasksTreeModel, task), planner);
-
-            if ( task.isContainer() ) {
-                expandWhenOpened((TaskContainer) task, item);
-            }
-            Component row;
-            if ( disabilityConfiguration.isTreeEditable() ) {
-                row = Executions.getCurrent().createComponents(
-                        "~./ganttz/zul/leftTasksTreeRow.zul", item, null);
-            } else {
-                row = Executions.getCurrent().createComponents(
-                        "~./ganttz/zul/leftTasksTreeRowLabels.zul", item, null);
-            }
-            leftTasksTreeRow.doAfterCompose(row);
-            detailsForBeans.put(task, leftTasksTreeRow);
-            deferredFiller.isBeingRendered(task, item);
-        }
-
-        private void expandWhenOpened(final TaskContainer taskBean, Treeitem item) {
-            item.addEventListener("onOpen", new EventListener() {
-                @Override
-                public void onEvent(Event event) {
-                    OpenEvent openEvent = (OpenEvent) event;
-                    taskBean.setExpanded(openEvent.isOpen());
-                }
-            });
-        }
-
-    }
-
-    public boolean isOpened(Task task) {
-        return task.isLeaf() || task.isExpanded();
-    }
-
-    private static final class DetailsForBeans {
-
-        private Map<Task, LeftTasksTreeRow> map = new HashMap<Task, LeftTasksTreeRow>();
-
-        private Set<Task> focusRequested = new HashSet<Task>();
-
-        public void put(Task task, LeftTasksTreeRow leftTasksTreeRow) {
-            map.put(task, leftTasksTreeRow);
-            if (focusRequested.contains(task)) {
-                focusRequested.remove(task);
-                leftTasksTreeRow.receiveFocus();
-            }
-        }
-
-        public void requestFocusFor(Task task) {
-            focusRequested.add(task);
-        }
-
-        public LeftTasksTreeRow get(Task taskbean) {
-            return map.get(taskbean);
-        }
-
-    }
-
     private DetailsForBeans detailsForBeans = new DetailsForBeans();
 
-    private final class TreeNavigator implements ILeftTasksTreeNavigator {
-        private final int[] pathToNode;
-        private final Task task;
-
-        private TreeNavigator(TreeModel treemodel, Task task) {
-            this.task = task;
-            this.pathToNode = tasksTreeModel.getPath(tasksTreeModel.getRoot(),
-                    task);
-        }
-
-        @Override
-        public LeftTasksTreeRow getAboveRow() {
-            Task parent = getParent(pathToNode);
-            int lastPosition = pathToNode[pathToNode.length - 1];
-            if (lastPosition != 0) {
-                return getChild(parent, lastPosition - 1);
-            } else if (tasksTreeModel.getRoot() != parent) {
-                return getDetailFor(parent);
-            }
-            return null;
-        }
-
-        private LeftTasksTreeRow getChild(Task parent, int position) {
-            Task child = tasksTreeModel.getChild(parent, position);
-            return getDetailFor(child);
-        }
-
-        private LeftTasksTreeRow getDetailFor(Task child) {
-            return detailsForBeans.get(child);
-        }
-
-        @Override
-        public LeftTasksTreeRow getBelowRow() {
-            if (isExpanded() && hasChildren()) {
-                return getChild(task, 0);
-            }
-            for (ChildAndParent childAndParent : group(task, tasksTreeModel
-                    .getParents(task))) {
-                if (childAndParent.childIsNotLast()) {
-                    return getDetailFor(childAndParent.getNextToChild());
-                }
-            }
-            // it's the last one, it has none below
-            return null;
-        }
-
-        public List<ChildAndParent> group(Task origin, List<Task> parents) {
-            ArrayList<ChildAndParent> result = new ArrayList<ChildAndParent>();
-            Task child = origin;
-            Task parent;
-            ListIterator<Task> listIterator = parents.listIterator();
-            while (listIterator.hasNext()) {
-                parent = listIterator.next();
-                result.add(new ChildAndParent(child, parent));
-                child = parent;
-            }
-            return result;
-        }
-
-        private class ChildAndParent {
-            private final Task parent;
-
-            private final Task child;
-
-            private Integer positionOfChildCached;
-
-            private ChildAndParent(Task child, Task parent) {
-                this.parent = parent;
-                this.child = child;
-            }
-
-            public Task getNextToChild() {
-                return tasksTreeModel
-                        .getChild(parent, getPositionOfChild() + 1);
-            }
-
-            public boolean childIsNotLast() {
-                return getPositionOfChild() < numberOfChildrenForParent() - 1;
-            }
-
-            private int numberOfChildrenForParent() {
-                return tasksTreeModel.getChildCount(parent);
-            }
-
-            private int getPositionOfChild() {
-                if (positionOfChildCached != null) {
-                    return positionOfChildCached;
-                }
-                int[] path = tasksTreeModel.getPath(parent, child);
-                return positionOfChildCached = path[path.length - 1];
-            }
-        }
-
-        private boolean hasChildren() {
-            return task.isContainer() && task.getTasks().size() > 0;
-        }
-
-        private boolean isExpanded() {
-            return task.isContainer() && task.isExpanded();
-        }
-
-        private Task getParent(int[] path) {
-            Task current = tasksTreeModel.getRoot();
-            for (int i = 0; i < path.length - 1; i++) {
-                current = tasksTreeModel.getChild(current, path[i]);
-            }
-            return current;
-        }
-
-    }
-
-    /**
-     * This class is a workaround for an issue with zk {@link Tree}. Once the
-     * tree is created, adding a node with children is troublesome. Only the top
-     * element is added to the tree, although the element has children. The Tree
-     * discards the adding event for the children because the parent says it's
-     * not loaded. This is the condition that is not satisfied:<br />
-     * <code>if(parent != null &&
-        (!(parent instanceof Treeitem) || ((Treeitem)parent).isLoaded())){</code><br />
-     * This problem is present in zk 3.6.1 at least.
-     * @author Óscar González Fernández <ogonzalez@igalia.com>
-     * @see Tree#onTreeDataChange
-     */
-    private class DeferredFiller {
-
-        private Set<Task> pendingToAddChildren = new HashSet<Task>();
-
-        public void addParentOfPendingToAdd(Task parent) {
-            pendingToAddChildren.add(parent);
-        }
-
-        public void isBeingRendered(final Task parent, final Treeitem item) {
-            if (!pendingToAddChildren.contains(parent)) {
-                return;
-            }
-            markLoaded(item);
-            fillModel(parent, 0, parent.getTasks(), false);
-            pendingToAddChildren.remove(parent);
-        }
-
-        private void markLoaded(Treeitem item) {
-            try {
-                Method method = getSetLoadedMethod();
-                method.invoke(item, true);
-            } catch (Exception e) {
-                throw new RuntimeException(e);
-            }
-        }
-
-        private Method setLoadedMethod = null;
-
-        private Method getSetLoadedMethod() {
-            if (setLoadedMethod != null) {
-                return setLoadedMethod;
-            }
-            try {
-                Method method = Treeitem.class.getDeclaredMethod("setLoaded",
-                        Boolean.TYPE);
-                method.setAccessible(true);
-                return setLoadedMethod = method;
-            } catch (Exception e) {
-                throw new RuntimeException(e);
-            }
-        }
-    }
-
-    private static Log LOG = LogFactory.getLog(LeftTasksTree.class);
-
     private final DeferredFiller deferredFiller = new DeferredFiller();
 
     private final List<Task> tasks;
@@ -329,67 +72,376 @@ public class LeftTasksTree extends HtmlMacroComponent {
 
     private FilterAndParentExpandedPredicates predicate;
 
-    private final List<Task> visibleTasks = new ArrayList<Task>();
+    private final List<Task> visibleTasks = new ArrayList<>();
 
     private Planner planner;
 
     public LeftTasksTree(IDisabilityConfiguration disabilityConfiguration,
-            Planner planner,
-            FilterAndParentExpandedPredicates predicate) {
+                         Planner planner,
+                         FilterAndParentExpandedPredicates predicate) {
+
         this.disabilityConfiguration = disabilityConfiguration;
         this.tasks = planner.getTaskList().getAllTasks();
         this.predicate = predicate;
         this.planner = planner;
     }
 
+    @Override
+    public void afterCompose() {
+        setClass("listdetails");
+        super.afterCompose();
+        tasksTree = (Tree) getFellow("tasksTree");
+        tasksTreeModel = MutableTreeModel.create(Task.class);
+        fillModel(tasks, true);
+        tasksTree.setModel(tasksTreeModel);
+        tasksTree.setItemRenderer(getTaskBeanRenderer());
+
+        /* Force call overridden render() */
+        try {
+            if ( !tasks.isEmpty() ) {
+                getTaskBeanRenderer().render(new Treeitem(""), tasks.get(0), 0);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    private final class TaskBeanRenderer implements TreeitemRenderer<Task> {
+        @Override
+        public void render(final Treeitem treeitem, Task o, int i) throws Exception {
+            Task task = o;
+            treeitem.setOpen(isOpened(task));
+
+            if ( task instanceof TaskContainer ) {
+
+                final TaskContainer container = (TaskContainer) task;
+
+                IExpandListener expandListener = new IExpandListener() {
+                    @Override
+                    public void expandStateChanged(boolean isNowExpanded) {
+                        treeitem.setOpen(isNowExpanded);
+                    }
+                };
+
+                container.addExpandListener(expandListener);
+
+            }
+
+            LeftTasksTreeRow leftTasksTreeRow =
+                    LeftTasksTreeRow.create(disabilityConfiguration, task, new TreeNavigator(task), planner);
+
+            if ( task.isContainer() ) {
+                expandWhenOpened((TaskContainer) task, treeitem);
+            }
+
+            /* Clear existing Treerows */
+            if ( !treeitem.getChildren().isEmpty() ) {
+                treeitem.getChildren().clear();
+            }
+
+            Component row = disabilityConfiguration.isTreeEditable()
+                    ? Executions
+                    .getCurrent()
+                    .createComponents("~./ganttz/zul/leftTasksTreeRow.zul", treeitem, null)
+                    : Executions
+                    .getCurrent()
+                    .createComponents("~./ganttz/zul/leftTasksTreeRowLabels.zul", treeitem, null);
+
+            leftTasksTreeRow.doAfterCompose(row);
+            detailsForBeans.put(task, leftTasksTreeRow);
+            deferredFiller.isBeingRendered(task, treeitem);
+        }
+
+        private void expandWhenOpened(final TaskContainer taskBean, Treeitem item) {
+            item.addEventListener("onOpen", event -> {
+                OpenEvent openEvent = (OpenEvent) event;
+                taskBean.setExpanded(openEvent.isOpen());
+            });
+        }
+    }
+
+    private TaskBeanRenderer getTaskBeanRenderer() {
+        return new TaskBeanRenderer();
+    }
+
+    public boolean isOpened(Task task) {
+        return task.isLeaf() || task.isExpanded();
+    }
+
+    private static final class DetailsForBeans {
+
+        private Map<Task, LeftTasksTreeRow> map = new HashMap<>();
+
+        private Set<Task> focusRequested = new HashSet<>();
+
+        public void put(Task task, LeftTasksTreeRow leftTasksTreeRow) {
+            map.put(task, leftTasksTreeRow);
+
+            if ( focusRequested.contains(task) ) {
+                focusRequested.remove(task);
+                leftTasksTreeRow.receiveFocus();
+            }
+        }
+
+        public void requestFocusFor(Task task) {
+            focusRequested.add(task);
+        }
+
+        public LeftTasksTreeRow get(Task taskbean) {
+            return map.get(taskbean);
+        }
+
+    }
+
+    private final class TreeNavigator implements ILeftTasksTreeNavigator {
+
+        private final int[] pathToNode;
+
+        private final Task task;
+
+        private TreeNavigator(Task task) {
+            this.task = task;
+            this.pathToNode = tasksTreeModel.getPath(tasksTreeModel.getRoot(), task);
+        }
+
+        @Override
+        public LeftTasksTreeRow getAboveRow() {
+            Task parent = getParent(pathToNode);
+            int lastPosition = pathToNode[pathToNode.length - 1];
+
+            if ( lastPosition != 0 ) {
+                return getChild(parent, lastPosition - 1);
+            } else if ( tasksTreeModel.getRoot() != parent ) {
+                return getDetailFor(parent);
+            }
+
+            return null;
+        }
+
+        private LeftTasksTreeRow getChild(Task parent, int position) {
+            return getDetailFor(tasksTreeModel.getChild(parent, position));
+        }
+
+        private LeftTasksTreeRow getDetailFor(Task child) {
+            return detailsForBeans.get(child);
+        }
+
+        @Override
+        public LeftTasksTreeRow getBelowRow() {
+            if ( isExpanded() && hasChildren() ) {
+                return getChild(task, 0);
+            }
+
+            for (ChildAndParent childAndParent : group(task, tasksTreeModel.getParents(task))) {
+                if ( childAndParent.childIsNotLast() ) {
+                    return getDetailFor(childAndParent.getNextToChild());
+                }
+            }
+
+            // It's the last one, it has none below
+            return null;
+        }
+
+        public List<ChildAndParent> group(Task origin, List<Task> parents) {
+            ArrayList<ChildAndParent> result = new ArrayList<>();
+            Task child = origin;
+
+            for (Task parent : parents) {
+                result.add(new ChildAndParent(child, parent));
+                child = parent;
+            }
+
+            return result;
+        }
+
+        private class ChildAndParent {
+
+            private final Task parent;
+
+            private final Task child;
+
+            private Integer positionOfChildCached;
+
+            private ChildAndParent(Task child, Task parent) {
+                this.parent = parent;
+                this.child = child;
+            }
+
+            public Task getNextToChild() {
+                return tasksTreeModel.getChild(parent, getPositionOfChild() + 1);
+            }
+
+            public boolean childIsNotLast() {
+                return getPositionOfChild() < numberOfChildrenForParent() - 1;
+            }
+
+            private int numberOfChildrenForParent() {
+                return tasksTreeModel.getChildCount(parent);
+            }
+
+            private int getPositionOfChild() {
+                if ( positionOfChildCached != null ) {
+                    return positionOfChildCached;
+                }
+
+                int[] path = tasksTreeModel.getPath(parent, child);
+
+                positionOfChildCached = path[path.length - 1];
+
+                return positionOfChildCached;
+            }
+        }
+
+        private boolean hasChildren() {
+            return task.isContainer() && !task.getTasks().isEmpty();
+        }
+
+        private boolean isExpanded() {
+            return task.isContainer() && task.isExpanded();
+        }
+
+        private Task getParent(int[] path) {
+            Task current = tasksTreeModel.getRoot();
+
+            for (int i = 0; i < path.length - 1; i++) {
+                current = tasksTreeModel.getChild(current, path[i]);
+            }
+
+            return current;
+        }
+
+    }
+
+    /**
+     * This class is a workaround for an issue with zk {@link Tree}.
+     * Once the tree is created, adding a node with children is troublesome.
+     * Only the top element is added to the tree, although the element has children.
+     * The Tree discards the adding event for the children because the parent says it's not loaded.
+     *
+     * This is the condition that is not satisfied:
+     * <br />
+     * <code>
+     *     if( parent != null && (!(parent instanceof Treeitem) || ((Treeitem) parent).isLoaded()) ) {
+     *         // ...
+     *     }
+     * </code>
+     * <br />
+     *
+     * This problem is present in zk 3.6.1 at least.
+     *
+     * @author Óscar González Fernández <ogonzalez@igalia.com>
+     * @see Tree#onTreeDataChange
+     */
+    private class DeferredFiller {
+
+        private Set<Task> pendingToAddChildren = new HashSet<>();
+
+        private Method setLoadedMethod = null;
+
+        public void addParentOfPendingToAdd(Task parent) {
+            pendingToAddChildren.add(parent);
+        }
+
+        public void isBeingRendered(final Task parent, final Treeitem item) {
+            if ( !pendingToAddChildren.contains(parent) ) {
+                return;
+            }
+
+            markLoaded(item);
+            fillModel(parent, 0, parent.getTasks(), false);
+            pendingToAddChildren.remove(parent);
+        }
+
+        private void markLoaded(Treeitem item) {
+            try {
+                Method method = getSetLoadedMethod();
+                method.invoke(item, true);
+            } catch (Exception e) {
+                throw new RuntimeException(e);
+            }
+        }
+
+        private Method getSetLoadedMethod() {
+            if ( setLoadedMethod != null ) {
+                return setLoadedMethod;
+            }
+
+            try {
+                Method method = Treeitem.class.getDeclaredMethod("setLoaded", Boolean.TYPE);
+                method.setAccessible(true);
+                setLoadedMethod = method;
+
+                return setLoadedMethod;
+
+            } catch (Exception e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
     private void fillModel(Collection<? extends Task> tasks, boolean firstTime) {
         fillModel(this.tasksTreeModel.getRoot(), 0, tasks, firstTime);
     }
 
-    private void fillModel(Task parent, Integer insertionPosition,
-            Collection<? extends Task> children, final boolean firstTime) {
-        if (predicate.isFilterContainers()) {
+    private void fillModel(Task parent,
+                           Integer insertionPosition,
+                           Collection<? extends Task> children,
+                           final boolean firstTime) {
+
+        if ( predicate.isFilterContainers() ) {
             parent = this.tasksTreeModel.getRoot();
         }
 
-        if (firstTime) {
+        if ( firstTime ) {
+
             for (Task node : children) {
-                if (predicate.accpetsFilterPredicateAndContainers(node)) {
-                    if (!visibleTasks.contains(node)) {
+
+                if ( predicate.accpetsFilterPredicateAndContainers(node) ) {
+
+                    if ( !visibleTasks.contains(node) ) {
                         this.tasksTreeModel.add(parent, node);
                         visibleTasks.add(node);
                     }
+
                 } else {
-                    if (visibleTasks.contains(node)) {
+
+                    if ( visibleTasks.contains(node) ) {
                         this.tasksTreeModel.remove(node);
                         visibleTasks.remove(node);
                     }
                 }
 
-                if (node.isContainer()) {
+                if ( node.isContainer() ) {
                     fillModel(node, 0, node.getTasks(), firstTime);
                 }
             }
 
         } else {
+
             for (Task node : children) {
-                if (node.isContainer()) {
-                    if (predicate.accpetsFilterPredicateAndContainers(node)) {
-                        if (!visibleTasks.contains(node)) {
+
+                if ( node.isContainer() ) {
+
+                    if ( predicate.accpetsFilterPredicateAndContainers(node) ) {
+
+                        if ( !visibleTasks.contains(node) ) {
                             this.deferredFiller.addParentOfPendingToAdd(node);
                         }
                     }
                 }
             }
-            // the node must be added after, so the multistepTreeFiller is
-            // ready
+
+            // The node must be added after, so the multistepTreeFiller is ready
             for (Task node : children) {
-                if (predicate.accpetsFilterPredicateAndContainers(node)) {
-                    if (!visibleTasks.contains(node)) {
-                        this.tasksTreeModel.add(parent, insertionPosition,
-                                Arrays.asList(node));
+
+                if ( predicate.accpetsFilterPredicateAndContainers(node) ) {
+
+                    if ( !visibleTasks.contains(node) ) {
+                        this.tasksTreeModel.add(parent, insertionPosition, Collections.singletonList(node));
                         visibleTasks.add(node);
                     }
+
                 } else {
                     if (visibleTasks.contains(node)) {
                         this.tasksTreeModel.remove(node);
@@ -411,7 +463,7 @@ public class LeftTasksTree extends HtmlMacroComponent {
     private void removeTaskAndAllChildren(List<Task> visibleTasks, Task task) {
         visibleTasks.remove(task);
 
-        if (task.isContainer()) {
+        if ( task.isContainer() ) {
             for (Task node : task.getTasks()) {
                 removeTaskAndAllChildren(visibleTasks, node);
             }
@@ -422,38 +474,25 @@ public class LeftTasksTree extends HtmlMacroComponent {
         tasksTreeModel.remove(taskRemoved);
     }
 
-    @Override
-    public void afterCompose() {
-        setClass("listdetails");
-        super.afterCompose();
-        tasksTree = (Tree) getFellow("tasksTree");
-        tasksTreeModel = MutableTreeModel.create(Task.class);
-        fillModel(tasks, true);
-        tasksTree.setModel(tasksTreeModel);
-        tasksTree.setTreeitemRenderer(new TaskBeanRenderer());
-    }
-
     void addTask(Position position, Task task) {
-        if (position.isAppendToTop()) {
-            fillModel(Arrays.asList(task), false);
+        if ( position.isAppendToTop() ) {
+            fillModel(Collections.singletonList(task), false);
             detailsForBeans.requestFocusFor(task);
         } else {
-            List<Task> toAdd = Arrays.asList(task);
-            fillModel(position.getParent(), position.getInsertionPosition(),
-                    toAdd, false);
+            List<Task> toAdd = Collections.singletonList(task);
+            fillModel(position.getParent(), position.getInsertionPosition(), toAdd, false);
         }
     }
 
     public void addTasks(Position position, Collection<? extends Task> newTasks) {
         Task root = tasksTreeModel.getRoot();
-        if (position.isAppendToTop()) {
+
+        if ( position.isAppendToTop() ) {
             fillModel(root, tasksTreeModel.getChildCount(root), newTasks, false);
-        } else if (position.isAtTop()) {
-            fillModel(root,
-                    position.getInsertionPosition(), newTasks, false);
+        } else if ( position.isAtTop() ) {
+            fillModel(root, position.getInsertionPosition(), newTasks, false);
         } else {
-            fillModel(position.getParent(), position.getInsertionPosition(),
-                    newTasks, false);
+            fillModel(position.getParent(), position.getInsertionPosition(), newTasks, false);
         }
     }
 
@@ -461,8 +500,7 @@ public class LeftTasksTree extends HtmlMacroComponent {
         return goingDownInLastArrowCommand;
     }
 
-    public void setGoingDownInLastArrowCommand(
-            CommandContextualized<?> goingDownInLastArrowCommand) {
+    public void setGoingDownInLastArrowCommand(CommandContextualized<?> goingDownInLastArrowCommand) {
         this.goingDownInLastArrowCommand = goingDownInLastArrowCommand;
     }
 

ganttzk/src/main/java/org/zkoss/ganttz/LeftTasksTreeRow.java

@@ -39,16 +39,12 @@ import org.joda.time.DateTime;
 import org.joda.time.LocalDate;
 import org.zkoss.ganttz.adapters.IDisabilityConfiguration;
 import org.zkoss.ganttz.data.GanttDate;
-import org.zkoss.ganttz.data.ITaskFundamentalProperties.IModifications;
-import org.zkoss.ganttz.data.ITaskFundamentalProperties.IUpdatablePosition;
 import org.zkoss.ganttz.data.Task;
 import org.zkoss.ganttz.util.ComponentsFinder;
 import org.zkoss.util.Locales;
 import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.Executions;
 import org.zkoss.zk.ui.WrongValueException;
-import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.event.Events;
 import org.zkoss.zk.ui.event.KeyEvent;
 import org.zkoss.zk.ui.util.GenericForwardComposer;
@@ -56,10 +52,10 @@ import org.zkoss.zul.Constraint;
 import org.zkoss.zul.Datebox;
 import org.zkoss.zul.Textbox;
 import org.zkoss.zul.Treecell;
-import org.zkoss.zul.api.Div;
-import org.zkoss.zul.api.Hlayout;
-import org.zkoss.zul.api.Label;
-import org.zkoss.zul.api.Treerow;
+import org.zkoss.zul.Div;
+import org.zkoss.zul.Hlayout;
+import org.zkoss.zul.Label;
+import org.zkoss.zul.Treerow;
 
 import static org.zkoss.ganttz.i18n.I18nHelper._;
 
@@ -74,6 +70,7 @@ import static org.zkoss.ganttz.i18n.I18nHelper._;
 public class LeftTasksTreeRow extends GenericForwardComposer {
 
     public interface ILeftTasksTreeNavigator {
+
         LeftTasksTreeRow getBelowRow();
 
         LeftTasksTreeRow getAboveRow();
@@ -287,7 +284,11 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
     }
 
     private enum Navigation {
-        LEFT, UP, RIGHT, DOWN;
+        LEFT,
+        UP,
+        RIGHT,
+        DOWN;
+
         public static Navigation getIntentFrom(KeyEvent keyEvent) {
             return values()[keyEvent.getKeyCode() - 37];
         }
@@ -332,15 +333,15 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
         int position = textBoxes.indexOf(textbox);
         switch (navigation) {
             case UP:
-            focusGoUp(position);
-            break;
+                focusGoUp(position);
+                break;
 
             case DOWN:
-            focusGoDown(position);
-            break;
+                focusGoDown(position);
+                break;
 
             default:
-            throw new RuntimeException("case not covered: " + navigation);
+                throw new RuntimeException("case not covered: " + navigation);
         }
     }
 
@@ -394,7 +395,7 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
     }
 
     private void findComponents(Treerow row) {
-        List<Object> rowChildren = row.getChildren();
+        List<Component> rowChildren = row.getChildren();
         List<Treecell> treeCells = ComponentsFinder.findComponentsOfType(Treecell.class, rowChildren);
         assert treeCells.size() == 4;
 
@@ -405,7 +406,7 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
     }
 
     private static Textbox findTextBoxOfCell(Treecell treecell) {
-        List<Object> children = treecell.getChildren();
+        List<Component> children = treecell.getChildren();
         return ComponentsFinder.findComponentsOfType(Textbox.class, children).get(0);
     }
 
@@ -418,54 +419,26 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
     }
 
     private void registerKeyboardListener(final Textbox textBox) {
-        textBox.addEventListener("onCtrlKey", new EventListener() {
-
-            @Override
-            public void onEvent(Event event) {
-                userWantsToMove(textBox, (KeyEvent) event);
-            }
-        });
+        textBox.addEventListener("onCtrlKey", event -> userWantsToMove(textBox, (KeyEvent) event));
     }
 
     private void registerOnChange(final Component component) {
-        component.addEventListener("onChange", new EventListener() {
-
-            @Override
-            public void onEvent(Event event) {
-                updateBean(component);
-            }
-        });
+        component.addEventListener("onChange", event -> updateBean(component));
     }
 
     private void registerOnChangeDatebox(final Datebox datebox, final Textbox textbox) {
-        datebox.addEventListener("onChange", new EventListener() {
-
-            @Override
-            public void onEvent(Event event) {
-                textbox.setValue(dateFormat.format(datebox.getValue()));
-                updateBean(textbox);
-            }
+        datebox.addEventListener("onChange", event -> {
+            textbox.setValue(dateFormat.format(datebox.getValue()));
+            updateBean(textbox);
         });
     }
 
     private void registerOnEnterListener(final Textbox textBox) {
-        textBox.addEventListener("onOK", new EventListener() {
-
-            @Override
-            public void onEvent(Event event) {
-                userWantsDateBox(textBox);
-            }
-        });
+        textBox.addEventListener("onOK", event -> userWantsDateBox(textBox));
     }
 
     private void registerOnEnterOpenDateBox(final Datebox datebox) {
-        datebox.addEventListener("onOK", new EventListener() {
-
-            @Override
-            public void onEvent(Event event) {
-                datebox.setOpen(true);
-            }
-        });
+        datebox.addEventListener("onOK", event -> datebox.setOpen(true));
     }
 
     private void findComponentsForStartDateCell(Treecell treecell) {
@@ -485,7 +458,7 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
     }
 
     private void findComponentsForStatusCell(Treecell treecell) {
-        List<Object> children = treecell.getChildren();
+        List<Component> children = treecell.getChildren();
 
         Hlayout hlayout = ComponentsFinder.findComponentsOfType(Hlayout.class, children).get(0);
 
@@ -496,13 +469,7 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
     }
 
     private void registerBlurListener(final Datebox datebox) {
-        datebox.addEventListener("onBlur", new EventListener() {
-
-            @Override
-            public void onEvent(Event event) {
-                dateBoxHasLostFocus(datebox);
-            }
-        });
+        datebox.addEventListener("onBlur", event -> dateBoxHasLostFocus(datebox));
     }
 
     public void updateBean(Component updatedComponent) {
@@ -518,13 +485,7 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
 
             try {
                 final Date begin = dateFormat.parse(getStartDateTextBox().getValue());
-                task.doPositionModifications(new IModifications() {
-
-                    @Override
-                    public void doIt(IUpdatablePosition position) {
-                        position.moveTo(GanttDate.createFrom(begin));
-                    }
-                });
+                task.doPositionModifications(position -> position.moveTo(GanttDate.createFrom(begin)));
             } catch (ParseException e) {
                 // Do nothing as textbox is rested in the next sentence
             }
@@ -562,12 +523,8 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
             nameLabel.setTooltiptext(task.getName());
             nameLabel.setSclass("clickable-rows");
 
-            nameLabel.addEventListener(Events.ON_CLICK, new EventListener() {
-                @Override
-                public void onEvent(Event arg0) throws Exception {
-                    Executions.getCurrent().sendRedirect("/planner/index.zul;order=" + task.getProjectCode());
-                }
-            });
+            nameLabel.addEventListener(Events.ON_CLICK,
+                    arg0 -> Executions.getCurrent().sendRedirect("/planner/index.zul;order=" + task.getProjectCode()));
 
             startDateLabel.setValue(asString(task.getBeginDate().toDayRoundedDate()));
             endDateLabel.setValue(asString(task.getEndDate().toDayRoundedDate()));
@@ -627,17 +584,17 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
 
         switch (status) {
             case MARGIN_EXCEEDED:
-            cssClass = "status-red";
-            break;
+                cssClass = "status-red";
+                break;
 
             case WITHIN_MARGIN:
-            cssClass = "status-orange";
-            break;
+                cssClass = "status-orange";
+                break;
 
             case AS_PLANNED:
 
             default:
-            cssClass = "status-green";
+                cssClass = "status-green";
         }
 
         return cssClass;
@@ -645,12 +602,9 @@ public class LeftTasksTreeRow extends GenericForwardComposer {
 
     private void onProjectStatusClick(Component statucComp) {
         if ( !disabilityConfiguration.isTreeEditable() ) {
-            statucComp.addEventListener(Events.ON_CLICK, new EventListener() {
-                @Override
-                public void onEvent(Event arg0) throws Exception {
-                    Executions.getCurrent().sendRedirect("/planner/index.zul;order=" + task.getProjectCode());
-                }
-            });
+            statucComp.addEventListener(
+                    Events.ON_CLICK,
+                    arg0 -> Executions.getCurrent().sendRedirect("/planner/index.zul;order=" + task.getProjectCode()));
         }
     }
 }

ganttzk/src/main/java/org/zkoss/ganttz/Planner.java

@@ -23,16 +23,15 @@ package org.zkoss.ganttz;
 
 import static org.zkoss.ganttz.i18n.I18nHelper._;
 
-
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
-import java.util.List;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.ArrayList;
 
 import org.apache.commons.logging.Log;
 import org.zkoss.ganttz.adapters.IDisabilityConfiguration;
@@ -56,7 +55,6 @@ import org.zkoss.ganttz.util.LongOperationFeedback;
 import org.zkoss.ganttz.util.LongOperationFeedback.ILongOperation;
 import org.zkoss.ganttz.util.ProfilingLogFactory;
 import org.zkoss.ganttz.util.WeakReferencedListeners;
-import org.zkoss.ganttz.util.WeakReferencedListeners.IListenerNotification;
 import org.zkoss.zk.au.AuRequest;
 import org.zkoss.zk.au.AuService;
 import org.zkoss.zk.mesg.MZk;
@@ -64,8 +62,6 @@ import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.Executions;
 import org.zkoss.zk.ui.HtmlMacroComponent;
 import org.zkoss.zk.ui.UiException;
-import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.event.Events;
 import org.zkoss.zk.ui.util.Clients;
 import org.zkoss.zul.Button;
@@ -74,57 +70,17 @@ import org.zkoss.zul.Listbox;
 import org.zkoss.zul.Listitem;
 import org.zkoss.zul.SimpleListModel;
 import org.zkoss.zul.South;
-import org.zkoss.zul.api.Combobox;
+import org.zkoss.zul.Combobox;
 
 public class Planner extends HtmlMacroComponent  {
 
     private static final Log PROFILING_LOG = ProfilingLogFactory.getLog(Planner.class);
 
-    public static boolean guessContainersExpandedByDefaultGivenPrintParameters(Map<String, String> printParameters) {
-        return guessContainersExpandedByDefault(convertToURLParameters(printParameters));
-    }
+    private static int PIXELS_PER_TASK_LEVEL = 21;
 
-    private static Map<String, String[]> convertToURLParameters(Map<String, String> printParameters) {
-        Map<String, String[]> result = new HashMap<>();
-        for (Entry<String, String> each : printParameters.entrySet()) {
-            result.put(each.getKey(), new String[] { each.getValue() });
-        }
+    private static int PIXELS_PER_CHARACTER = 5;
 
-        return result;
-    }
-
-    public static boolean guessContainersExpandedByDefault(Map<String, String[]> queryURLParameters) {
-        String[] values = queryURLParameters.get("expanded");
-
-        return values != null && toLowercaseSet(values).contains("all");
-    }
-
-    public static boolean guessShowAdvancesByDefault(Map<String, String[]> queryURLParameters) {
-        String[] values = queryURLParameters.get("advances");
-
-        return values != null && toLowercaseSet(values).contains("all");
-    }
-
-    public static boolean guessShowReportedHoursByDefault(Map<String, String[]> queryURLParameters) {
-        String[] values = queryURLParameters.get("reportedHours");
-
-        return values != null && toLowercaseSet(values).contains("all");
-    }
-
-    public static boolean guessShowMoneyCostBarByDefault(Map<String, String[]> queryURLParameters) {
-        String[] values = queryURLParameters.get("moneyCostBar");
-
-        return values != null && toLowercaseSet(values).contains("all");
-    }
-
-    private static Set<String> toLowercaseSet(String[] values) {
-        Set<String> result = new HashSet<>();
-        for (String each : values) {
-            result.add(each.toLowerCase());
-        }
-
-        return result;
-    }
+    private String EXPAND_ALL_BUTTON = "expandAll";
 
     private GanttZKDiagramGraph diagramGraph;
 
@@ -134,6 +90,8 @@ public class Planner extends HtmlMacroComponent  {
 
     private List<? extends CommandContextualized<?>> contextualizedGlobalCommands;
 
+    private CommandContextualized<?> goingDownInLastArrowCommand;
+
     private List<? extends CommandOnTaskContextualized<?>> commandsOnTasksContextualized;
 
     private CommandOnTaskContextualized<?> doubleClickCommand;
@@ -165,16 +123,102 @@ public class Planner extends HtmlMacroComponent  {
     private WeakReferencedListeners<IChartVisibilityChangedListener> chartVisibilityListeners =
             WeakReferencedListeners.create();
 
-    public Planner() {
+    private IGraphChangeListener showCriticalPathOnChange = new IGraphChangeListener() {
+        @Override
+        public void execute() {
+            context.showCriticalPath();
+        }
+    };
+
+    private IGraphChangeListener showAdvanceOnChange = new IGraphChangeListener() {
+        @Override
+        public void execute() {
+            context.showAdvances();
+        }
+    };
+
+    private IGraphChangeListener showReportedHoursOnChange = new IGraphChangeListener() {
+        @Override
+        public void execute() {
+            context.showReportedHours();
+        }
+    };
+
+    private IGraphChangeListener showMoneyCostBarOnChange = new IGraphChangeListener() {
+        @Override
+        public void execute() {
+            context.showMoneyCostBar();
+        }
+    };
+
+    private boolean containersExpandedByDefault = false;
+
+    private boolean shownAdvanceByDefault = false;
+
+    private boolean shownReportedHoursByDefault = false;
+
+    private boolean shownMoneyCostBarByDefault = false;
+
+    private FilterAndParentExpandedPredicates predicate;
+
+    private boolean visibleChart;
+
+    public Planner() {}
+
+    public static boolean guessContainersExpandedByDefaultGivenPrintParameters(Map<String, String> printParameters) {
+        return guessContainersExpandedByDefault(convertToURLParameters(printParameters));
+    }
+
+    private static Map<String, String[]> convertToURLParameters(Map<String, String> printParameters) {
+        Map<String, String[]> result = new HashMap<>();
+        for (Entry<String, String> each : printParameters.entrySet()) {
+            result.put(each.getKey(), new String[] { each.getValue() });
+        }
+
+        return result;
+    }
+
+    public static boolean guessContainersExpandedByDefault(Map<String, String[]> queryURLParameters) {
+        String[] values = queryURLParameters.get("expanded");
+
+        return values != null && toLowercaseSet(values).contains("all");
+
+    }
+
+    public static boolean guessShowAdvancesByDefault(Map<String, String[]> queryURLParameters) {
+        String[] values = queryURLParameters.get("advances");
+
+        return values != null && toLowercaseSet(values).contains("all");
+
+    }
+
+    public static boolean guessShowReportedHoursByDefault(Map<String, String[]> queryURLParameters) {
+        String[] values = queryURLParameters.get("reportedHours");
+
+        return values != null && toLowercaseSet(values).contains("all");
+
+    }
+
+    public static boolean guessShowMoneyCostBarByDefault(Map<String, String[]> queryURLParameters) {
+        String[] values = queryURLParameters.get("moneyCostBar");
+
+        return values != null && toLowercaseSet(values).contains("all");
+
+    }
+
+    private static Set<String> toLowercaseSet(String[] values) {
+        Set<String> result = new HashSet<>();
+        for (String each : values) {
+            result.add(each.toLowerCase());
+        }
+
+        return result;
     }
 
     TaskList getTaskList() {
-        if ( ganttPanel == null ) {
-            return null;
-        }
-        List<Object> children = ganttPanel.getChildren();
-
-        return ComponentsFinder.findComponentsOfType(TaskList.class, children).get(0);
+        return ganttPanel == null
+                ? null
+                : ComponentsFinder.findComponentsOfType(TaskList.class, ganttPanel.getChildren()).get(0);
     }
 
     public int getTaskNumber() {
@@ -186,20 +230,19 @@ public class Planner extends HtmlMacroComponent  {
     }
 
     private int calculateMinimumWidthForTaskNameColumn(boolean expand, List<Task> tasks) {
+
         IDomainAndBeansMapper<?> mapper = getContext().getMapper();
         int widest = 0;
 
-        for(Task task : tasks) {
+        for (Task task : tasks) {
             int numberOfAncestors = mapper.findPositionFor(task).getAncestors().size();
             int numberOfCharacters = task.getName().length();
-            int PIXELS_PER_TASK_LEVEL = 21;
-            int PIXELS_PER_CHARACTER = 5;
 
             widest = Math.max(
                     widest,
                     numberOfCharacters * PIXELS_PER_CHARACTER + numberOfAncestors * PIXELS_PER_TASK_LEVEL);
 
-            if( expand && !task.isLeaf() ) {
+            if ( expand && !task.isLeaf() ) {
                 widest = Math.max(widest, calculateMinimumWidthForTaskNameColumn(expand, task.getTasks()));
             }
         }
@@ -220,7 +263,7 @@ public class Planner extends HtmlMacroComponent  {
             return null;
         }
 
-        List<Object> children = ganttPanel.getChildren();
+        List<Component> children = ganttPanel.getChildren();
         List<DependencyList> found = ComponentsFinder.findComponentsOfType(DependencyList.class, children);
 
         if ( found.isEmpty() ) {
@@ -232,6 +275,7 @@ public class Planner extends HtmlMacroComponent  {
 
     public void addTasks(Position position, Collection<? extends Task> newTasks) {
         TaskList taskList = getTaskList();
+
         if ( taskList != null && leftPane != null ) {
             taskList.addTasks(position, newTasks);
             leftPane.addTasks(position, newTasks);
@@ -244,6 +288,7 @@ public class Planner extends HtmlMacroComponent  {
 
     void addDependencies(Collection<? extends Dependency> dependencies) {
         DependencyList dependencyList = getDependencyList();
+
         if ( dependencyList == null ) {
             return;
         }
@@ -253,21 +298,23 @@ public class Planner extends HtmlMacroComponent  {
         }
     }
 
-    public ListModel getZoomLevels() {
+    public ListModel<ZoomLevel> getZoomLevels() {
         ZoomLevel[] selectableZoomlevels = {
                 ZoomLevel.DETAIL_ONE,
                 ZoomLevel.DETAIL_TWO,
                 ZoomLevel.DETAIL_THREE,
                 ZoomLevel.DETAIL_FOUR,
-                ZoomLevel.DETAIL_FIVE };
+                ZoomLevel.DETAIL_FIVE
+        };
 
-        return new SimpleListModel(selectableZoomlevels);
+        return new SimpleListModel<>(selectableZoomlevels);
     }
 
     public void setZoomLevel(final ZoomLevel zoomLevel, int scrollLeft) {
         if ( ganttPanel == null ) {
             return;
         }
+
         this.zoomLevel = zoomLevel;
         ganttPanel.setZoomLevel(zoomLevel, scrollLeft);
     }
@@ -294,6 +341,7 @@ public class Planner extends HtmlMacroComponent  {
         if ( ganttPanel == null ) {
             return;
         }
+
         LongOperationFeedback.execute(ganttPanel, new ILongOperation() {
             @Override
             public String getName() {
@@ -328,18 +376,22 @@ public class Planner extends HtmlMacroComponent  {
                 new FunctionalityExposedForExtensions<>(this, configuration, diagramGraph);
 
         addGraphChangeListenersFromConfiguration(configuration);
+
         this.contextualizedGlobalCommands = contextualize(newContext, configuration.getGlobalCommands());
+
         this.commandsOnTasksContextualized = contextualize(newContext, configuration.getCommandsOnTasks());
 
-        CommandContextualized<?> goingDownInLastArrowCommand =
-                contextualize(newContext, configuration.getGoingDownInLastArrowCommand());
+        goingDownInLastArrowCommand = contextualize(newContext, configuration.getGoingDownInLastArrowCommand());
 
         doubleClickCommand = contextualize(newContext, configuration.getDoubleClickCommand());
+
         this.context = newContext;
         this.disabilityConfiguration = configuration;
+
         resettingPreviousComponentsToNull();
         long timeAddingData = System.currentTimeMillis();
         newContext.add(configuration.getData());
+
         PROFILING_LOG.debug("It took to add data: " + (System.currentTimeMillis() - timeAddingData) + " ms");
         long timeSetupingAndAddingComponents = System.currentTimeMillis();
         setupComponents();
@@ -356,6 +408,7 @@ public class Planner extends HtmlMacroComponent  {
         timetrackerheader.afterCompose();
 
         Component chartComponent = configuration.getChartComponent();
+
         if ( chartComponent != null ) {
             setAt("insertionPointChart", chartComponent);
         }
@@ -366,11 +419,11 @@ public class Planner extends HtmlMacroComponent  {
         }
 
         if ( !configuration.isExpandAllEnabled() ) {
-            Button expandAllButton = (Button) getFellow("expandAll");
+            Button expandAllButton = (Button) getFellow(EXPAND_ALL_BUTTON);
             expandAllButton.setVisible(false);
         }
 
-        if ( !configuration.isFlattenTreeEnabled() ) {
+        if (!configuration.isFlattenTreeEnabled()) {
             Button flattenTree = (Button) getFellow("flattenTree");
             flattenTree.setVisible(false);
         }
@@ -390,22 +443,26 @@ public class Planner extends HtmlMacroComponent  {
         this.visibleChart = configuration.isExpandPlanningViewCharts();
         ((South) getFellow("graphics")).setOpen(this.visibleChart);
 
-        PROFILING_LOG.debug(
-                "It took doing the setup of components and adding them: " +
-                        (System.currentTimeMillis() - timeSetupingAndAddingComponents) + " ms");
+        if (!visibleChart) {
+            ((South) getFellow("graphics")).setTitle(_("Graphics are disabled"));
+        }
 
-        setAuService(new AuService(){
+        PROFILING_LOG.debug("it took doing the setup of components and adding them: "
+                + (System.currentTimeMillis() - timeSetupingAndAddingComponents) + " ms");
+
+        setAuService(new AuService() {
             public boolean service(AuRequest request, boolean everError){
                 String command = request.getCommand();
                 int zoomindex;
                 int scrollLeft;
 
-                if ( command.equals("onZoomLevelChange") ){
+                if ( "onZoomLevelChange".equals(command) ) {
                     zoomindex=  (Integer) retrieveData(request, "zoomindex");
                     scrollLeft = (Integer) retrieveData(request, "scrollLeft");
 
-                    setZoomLevel((ZoomLevel)((Listbox)getFellow("listZoomLevels"))
-                            .getModel().getElementAt(zoomindex), scrollLeft);
+                    setZoomLevel(
+                            (ZoomLevel)((Listbox) getFellow("listZoomLevels")).getModel().getElementAt(zoomindex),
+                            scrollLeft);
 
                     return true;
                 }
@@ -413,7 +470,7 @@ public class Planner extends HtmlMacroComponent  {
                 return false;
             }
 
-            private Object retrieveData(AuRequest request, String key){
+            private Object retrieveData(AuRequest request, String key) {
                 Object value = request.getData().get(key);
                 if ( value == null )
                     throw new UiException(MZk.ILLEGAL_REQUEST_WRONG_DATA, new Object[] { key, this });
@@ -434,9 +491,8 @@ public class Planner extends HtmlMacroComponent  {
         insertionPoint.appendChild(component);
     }
 
-    private <T> List<CommandOnTaskContextualized<T>> contextualize(
-            FunctionalityExposedForExtensions<T> context, List<ICommandOnTask<T>> commands) {
-
+    private <T> List<CommandOnTaskContextualized<T>> contextualize(FunctionalityExposedForExtensions<T> context,
+                                                                   List<ICommandOnTask<T>> commands) {
         List<CommandOnTaskContextualized<T>> result = new ArrayList<>();
         for (ICommandOnTask<T> c : commands) {
             result.add(contextualize(context, c));
@@ -445,18 +501,14 @@ public class Planner extends HtmlMacroComponent  {
         return result;
     }
 
-    private <T> CommandOnTaskContextualized<T> contextualize(
-            FunctionalityExposedForExtensions<T> context, ICommandOnTask<T> commandOnTask) {
+    private <T> CommandOnTaskContextualized<T> contextualize(FunctionalityExposedForExtensions<T> context,
+                                                             ICommandOnTask<T> commandOnTask) {
 
         return CommandOnTaskContextualized.create(commandOnTask, context.getMapper(), context);
     }
 
     private <T> CommandContextualized<T> contextualize(IContext<T> context, ICommand<T> command) {
-        if (command == null) {
-            return null;
-        }
-
-        return CommandContextualized.create(command, context);
+        return command == null ? null : CommandContextualized.create(command, context);
     }
 
     private <T> List<CommandContextualized<T>> contextualize(
@@ -510,6 +562,7 @@ public class Planner extends HtmlMacroComponent  {
 
             // Comparison through icon as name is internationalized
             if ( c.getCommand().isPlannerCommand() ) {
+
                 // FIXME Avoid hard-coding the number of planner commands
                 // At this moment we have 2 planner commands: reassign and adapt planning
                 if ( plannerToolbar.getChildren().size() < 2 ) {
@@ -535,10 +588,7 @@ public class Planner extends HtmlMacroComponent  {
         taskList.remove(task);
         getDependencyList().taskRemoved(task);
         leftPane.taskRemoved(task);
-
-        // forcing smart update
-        setHeight(getHeight());
-
+        setHeight(getHeight());// forcing smart update
         ganttPanel.adjustZoomColumnsHeight();
         getDependencyList().redrawDependencies();
     }
@@ -549,14 +599,10 @@ public class Planner extends HtmlMacroComponent  {
         listZoomLevels = (Listbox) getFellow("listZoomLevels");
 
         Component westContainer = getFellow("taskdetailsContainer");
-        westContainer.addEventListener(Events.ON_SIZE, new EventListener() {
 
-            @Override
-            public void onEvent(Event event) {
-                Clients.evalJavaScript("ganttz.TaskList.getInstance().legendResize();");
-            }
-
-        });
+        westContainer.addEventListener(
+                Events.ON_SIZE,
+                event -> Clients.evalJavaScript("ganttz.TaskList.getInstance().legendResize();"));
 
     }
 
@@ -564,60 +610,14 @@ public class Planner extends HtmlMacroComponent  {
         return ganttPanel.getTimeTracker();
     }
 
-    private IGraphChangeListener showCriticalPathOnChange = new IGraphChangeListener() {
-
-        @Override
-        public void execute() {
-            context.showCriticalPath();
-        }
-    };
-
-    private IGraphChangeListener showAdvanceOnChange = new IGraphChangeListener() {
-
-        @Override
-        public void execute() {
-            context.showAdvances();
-        }
-    };
-
-    private IGraphChangeListener showReportedHoursOnChange = new IGraphChangeListener() {
-
-        @Override
-        public void execute() {
-            context.showReportedHours();
-        }
-    };
-
-    private IGraphChangeListener showMoneyCostBarOnChange = new IGraphChangeListener() {
-
-        @Override
-        public void execute() {
-            context.showMoneyCostBar();
-        }
-    };
-
-    private boolean containersExpandedByDefault = false;
-
-    private boolean shownAdvanceByDefault = false;
-
-    private boolean shownReportedHoursByDefault = false;
-
-    private boolean shownMoneyCostBarByDefault = false;
-
-    private FilterAndParentExpandedPredicates predicate;
-
-    private boolean visibleChart;
-
     public void showCriticalPath() {
         Button showCriticalPathButton = (Button) getFellow("showCriticalPath");
-
         if ( disabilityConfiguration.isCriticalPathEnabled() ) {
             if ( isShowingCriticalPath ) {
                 context.hideCriticalPath();
                 diagramGraph.removePostGraphChangeListener(showCriticalPathOnChange);
                 showCriticalPathButton.setSclass("planner-command");
                 showCriticalPathButton.setTooltiptext(_("Show critical path"));
-
             } else {
                 context.showCriticalPath();
                 diagramGraph.addPostGraphChangeListener(showCriticalPathOnChange);
@@ -638,10 +638,9 @@ public class Planner extends HtmlMacroComponent  {
     public void showAdvances() {
         Button showAdvancesButton = (Button) getFellow("showAdvances");
         if ( disabilityConfiguration.isAdvancesEnabled() ) {
-
             Combobox progressTypesCombo = (Combobox) getFellow("cbProgressTypes");
-            if ( isShowingAdvances ) {
 
+            if ( isShowingAdvances ) {
                 context.hideAdvances();
                 diagramGraph.removePostGraphChangeListener(showAdvanceOnChange);
                 showAdvancesButton.setSclass("planner-command");
@@ -650,40 +649,39 @@ public class Planner extends HtmlMacroComponent  {
                 if ( progressTypesCombo.getItemCount() > 0 ) {
                     progressTypesCombo.setSelectedIndex(0);
                 }
-
             } else {
                 context.showAdvances();
                 diagramGraph.addPostGraphChangeListener(showAdvanceOnChange);
                 showAdvancesButton.setSclass("planner-command clicked");
                 showAdvancesButton.setTooltiptext(_("Hide progress"));
             }
+
             isShowingAdvances = !isShowingAdvances;
         }
     }
 
     public void showReportedHours() {
         Button showReportedHoursButton = (Button) getFellow("showReportedHours");
-
         if ( disabilityConfiguration.isReportedHoursEnabled() ) {
+
             if ( isShowingReportedHours ) {
                 context.hideReportedHours();
                 diagramGraph.removePostGraphChangeListener(showReportedHoursOnChange);
                 showReportedHoursButton.setSclass("planner-command");
                 showReportedHoursButton.setTooltiptext(_("Show reported hours"));
-
             } else {
                 context.showReportedHours();
                 diagramGraph.addPostGraphChangeListener(showReportedHoursOnChange);
                 showReportedHoursButton.setSclass("planner-command clicked");
                 showReportedHoursButton.setTooltiptext(_("Hide reported hours"));
             }
+
             isShowingReportedHours = !isShowingReportedHours;
         }
     }
 
     public void showMoneyCostBar() {
         Button showMoneyCostBarButton = (Button) getFellow("showMoneyCostBar");
-
         if ( disabilityConfiguration.isMoneyCostBarEnabled() ) {
             if ( isShowingMoneyCostBar ) {
                 context.hideMoneyCostBar();
@@ -696,6 +694,7 @@ public class Planner extends HtmlMacroComponent  {
                 showMoneyCostBarButton.setSclass("planner-command clicked");
                 showMoneyCostBarButton.setTooltiptext(_("Hide money cost bar"));
             }
+
             isShowingMoneyCostBar = !isShowingMoneyCostBar;
         }
     }
@@ -709,6 +708,7 @@ public class Planner extends HtmlMacroComponent  {
             Clients.evalJavaScript("ganttz.TaskList.getInstance().showAllTaskLabels()");
             showAllLabelsButton.setSclass("planner-command show-labels clicked");
         }
+
         isShowingLabels = !isShowingLabels;
     }
 
@@ -721,6 +721,7 @@ public class Planner extends HtmlMacroComponent  {
             Clients.evalJavaScript("ganttz.TaskList.getInstance().showResourceTooltips()");
             showAllLabelsButton.setSclass("planner-command show-resources clicked");
         }
+
         isShowingResources = !isShowingResources;
     }
 
@@ -731,11 +732,9 @@ public class Planner extends HtmlMacroComponent  {
     }
 
     public ZoomLevel getZoomLevel() {
-        if ( ganttPanel == null ) {
-            return zoomLevel != null ? zoomLevel : ZoomLevel.DETAIL_ONE;
-        }
-
-        return ganttPanel.getTimeTracker().getDetailLevel();
+        return ganttPanel == null
+                ? zoomLevel != null ? zoomLevel : ZoomLevel.DETAIL_ONE
+                : ganttPanel.getTimeTracker().getDetailLevel();
     }
 
     public void setInitialZoomLevel(final ZoomLevel zoomLevel) {
@@ -755,7 +754,7 @@ public class Planner extends HtmlMacroComponent  {
     }
 
     public boolean showAdvancesRightNow() {
-        return (areShownAdvancesByDefault() || isShowingAdvances);
+        return areShownAdvancesByDefault() || isShowingAdvances;
     }
 
     public void setAreShownAdvancesByDefault(boolean shownAdvanceByDefault) {
@@ -772,7 +771,7 @@ public class Planner extends HtmlMacroComponent  {
     }
 
     public boolean showReportedHoursRightNow() {
-        return (areShownReportedHoursByDefault() || isShowingReportedHours);
+        return areShownReportedHoursByDefault() || isShowingReportedHours;
     }
 
     public void setAreShownMoneyCostBarByDefault(boolean shownMoneyCostBarByDefault) {
@@ -784,13 +783,13 @@ public class Planner extends HtmlMacroComponent  {
     }
 
     public boolean showMoneyCostBarRightNow() {
-        return (areShownMoneyCostBarByDefault() || isShowingMoneyCostBar);
+        return areShownMoneyCostBarByDefault() || isShowingMoneyCostBar;
     }
 
     public void expandAll() {
-        Button expandAllButton = (Button) getFellow("expandAll");
-
+        Button expandAllButton = (Button) getFellow(EXPAND_ALL_BUTTON);
         if ( disabilityConfiguration.isExpandAllEnabled() ) {
+
             if ( isExpandAll ) {
                 context.collapseAll();
                 expandAllButton.setSclass("planner-command");
@@ -799,25 +798,26 @@ public class Planner extends HtmlMacroComponent  {
                 expandAllButton.setSclass("planner-command clicked");
             }
         }
+
         isExpandAll = !isExpandAll;
     }
 
     public void expandAllAlways() {
-        Button expandAllButton = (Button) getFellow("expandAll");
+        Button expandAllButton = (Button) getFellow(EXPAND_ALL_BUTTON);
         if ( disabilityConfiguration.isExpandAllEnabled() ) {
-                context.expandAll();
-                expandAllButton.setSclass("planner-command clicked");
+            context.expandAll();
+            expandAllButton.setSclass("planner-command clicked");
         }
     }
 
     public void updateSelectedZoomLevel() {
         ganttPanel.getTimeTracker().setZoomLevel(zoomLevel);
-        Listitem selectedItem = (Listitem) listZoomLevels.getItems().get(zoomLevel.ordinal());
+        Listitem selectedItem = listZoomLevels.getItems().get(zoomLevel.ordinal());
         listZoomLevels.setSelectedItem(selectedItem);
         listZoomLevels.invalidate();
     }
 
-    public IContext<?> getContext() {
+    public IContext getContext() {
         return context;
     }
 
@@ -838,17 +838,18 @@ public class Planner extends HtmlMacroComponent  {
 
     public void flattenTree() {
         Button flattenTreeButton = (Button) getFellow("flattenTree");
-
         if ( disabilityConfiguration.isFlattenTreeEnabled() ) {
-            if ( isFlattenTree ) {
+            if (isFlattenTree) {
                 predicate.setFilterContainers(false);
                 flattenTreeButton.setSclass("planner-command");
             } else {
                 predicate.setFilterContainers(true);
                 flattenTreeButton.setSclass("planner-command clicked");
             }
+
             setTaskListPredicate(predicate);
         }
+
         isFlattenTree = !isFlattenTree;
         Clients.evalJavaScript("ganttz.Planner.getInstance().adjustScrollableDimensions()");
     }
@@ -859,12 +860,7 @@ public class Planner extends HtmlMacroComponent  {
 
     public void changeChartVisibility(boolean visible) {
         visibleChart = visible;
-        chartVisibilityListeners.fireEvent(new IListenerNotification<IChartVisibilityChangedListener>() {
-            @Override
-            public void doNotify(IChartVisibilityChangedListener listener) {
-                listener.chartVisibilityChanged(visibleChart);
-            }
-        });
+        chartVisibilityListeners.fireEvent(listener -> listener.chartVisibilityChanged(visibleChart));
     }
 
     public boolean isVisibleChart() {
@@ -914,8 +910,9 @@ public class Planner extends HtmlMacroComponent  {
         return null;
     }
 
+    @Override
     public String getWidgetClass(){
-        return getDefinition().getDefaultWidgetClass();
+        return getDefinition().getDefaultWidgetClass(this);
     }
 
     public List getCriticalPath() {
@@ -926,17 +923,19 @@ public class Planner extends HtmlMacroComponent  {
         TaskList taskList = getTaskList();
         if ( taskList != null ) {
             taskList.updateCompletion(progressType);
-            // FIXME Bug #1270
+
             for (TaskComponent each : taskList.getTaskComponents()) {
                 each.invalidate();
             }
         }
     }
 
-    public TaskComponent getTaskComponentRelatedTo(org.zkoss.ganttz.data.Task task) {
+    public TaskComponent getTaskComponentRelatedTo(Task task) {
         TaskList taskList = getTaskList();
         if ( taskList != null ) {
+
             for (TaskComponent each : taskList.getTaskComponents()) {
+
                 if ( each.getTask().equals(task) ) {
                     return each;
                 }

ganttzk/src/main/java/org/zkoss/ganttz/TabsRegistry.java

@@ -29,16 +29,14 @@ import java.util.Map;
 import org.zkoss.ganttz.extensions.ITab;
 import org.zkoss.ganttz.util.IMenuItemsRegister;
 import org.zkoss.zk.ui.Component;
-import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 
 public class TabsRegistry {
 
-    private List<ITab> tabs = new ArrayList<ITab>();
+    private List<ITab> tabs = new ArrayList<>();
 
     private final Component parent;
 
-    private Map<ITab, Object> fromTabToMenuKey = new HashMap<ITab, Object>();
+    private Map<ITab, Object> fromTabToMenuKey = new HashMap<>();
 
     private IMenuItemsRegister menu;
 
@@ -52,14 +50,10 @@ public class TabsRegistry {
     }
 
     public interface IBeforeShowAction {
-        public void doAction();
+        void doAction();
     }
 
-    private static final IBeforeShowAction DO_NOTHING = new IBeforeShowAction() {
-        @Override
-        public void doAction() {
-        }
-    };
+    private static final IBeforeShowAction DO_NOTHING = () -> {};
 
     public void show(ITab tab) {
         show(tab, DO_NOTHING);
@@ -101,23 +95,10 @@ public class TabsRegistry {
         }
     }
 
-    public void showFirst() {
-        if (!tabs.isEmpty()) {
-            show(tabs.get(0));
-        }
-    }
-
     public void registerAtMenu(IMenuItemsRegister menu) {
         this.menu = menu;
         for (final ITab t : tabs) {
-            Object key = menu.addMenuItem(t.getName(), t.getCssClass(),
-                    new EventListener() {
-
-                @Override
-                public void onEvent(Event event) {
-                    show(t);
-                }
-            });
+            Object key = menu.addMenuItem(t.getName(), t.getCssClass(), event -> show(t));
             fromTabToMenuKey.put(t, key);
         }
 

ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java

@@ -21,6 +21,7 @@
 
 package org.zkoss.ganttz;
 
+import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.io.IOException;
 import java.util.Date;
@@ -34,6 +35,8 @@ import org.joda.time.Duration;
 import org.joda.time.LocalDate;
 import org.zkoss.ganttz.adapters.IDisabilityConfiguration;
 import org.zkoss.ganttz.data.GanttDate;
+import org.zkoss.ganttz.data.ITaskFundamentalProperties.IModifications;
+import org.zkoss.ganttz.data.ITaskFundamentalProperties.IUpdatablePosition;
 import org.zkoss.ganttz.data.Milestone;
 import org.zkoss.ganttz.data.Task;
 import org.zkoss.ganttz.data.Task.IReloadResourcesTextRequested;
@@ -62,9 +65,12 @@ import org.zkoss.zul.Div;
 public class TaskComponent extends Div implements AfterCompose {
 
     private static final int HEIGHT_PER_TASK = 10;
+
     private static final int CONSOLIDATED_MARK_HALF_WIDTH = 3;
+
     private static final int HALF_DEADLINE_MARK = 3;
 
+    private String FUNCTION_RESIZE = "resizeCompletion2Advance";
 
     protected final IDisabilityConfiguration disabilityConfiguration;
 
@@ -76,6 +82,18 @@ public class TaskComponent extends Div implements AfterCompose {
 
     private PropertyChangeListener showingMoneyCostBarPropertyListener;
 
+    private IReloadResourcesTextRequested reloadResourcesTextRequested;
+
+    private String _color;
+
+    private boolean isTopLevel;
+
+    private final Task task;
+
+    private transient PropertyChangeListener propertiesListener;
+
+    private String progressType;
+
     public static TaskComponent asTaskComponent(Task task,
                                                 IDisabilityConfiguration disabilityConfiguration,
                                                 boolean isTopLevel) {
@@ -99,8 +117,6 @@ public class TaskComponent extends Div implements AfterCompose {
         return asTaskComponent(task, disabilityConfiguration, true);
     }
 
-    private IReloadResourcesTextRequested reloadResourcesTextRequested;
-
     public TaskComponent(Task task, IDisabilityConfiguration disabilityConfiguration) {
         setHeight(HEIGHT_PER_TASK + "px");
         setContext("idContextMenuTaskAssignment");
@@ -108,9 +124,7 @@ public class TaskComponent extends Div implements AfterCompose {
         setClass(calculateCSSClass());
         setId(UUID.randomUUID().toString());
         this.disabilityConfiguration = disabilityConfiguration;
-
-        IConstraintViolationListener<GanttDate> taskViolationListener =
-                Constraint.onlyOnZKExecution(new IConstraintViolationListener<GanttDate>() {
+        IConstraintViolationListener<GanttDate> taskViolationListener = Constraint.onlyOnZKExecution(new IConstraintViolationListener<GanttDate>() {
 
             @Override
             public void constraintViolated(Constraint<GanttDate> constraint, GanttDate value) {
@@ -124,32 +138,38 @@ public class TaskComponent extends Div implements AfterCompose {
         });
 
         this.task.addConstraintViolationListener(taskViolationListener, Mode.RECEIVE_PENDING);
-        reloadResourcesTextRequested = () -> {
-            if ( canShowResourcesText() ) {
-                smartUpdate("resourcesText", getResourcesText());
+
+        reloadResourcesTextRequested = new IReloadResourcesTextRequested() {
+            @Override
+            public void reloadResourcesTextRequested() {
+                if ( canShowResourcesText() ) {
+                    smartUpdate("resourcesText", getResourcesText());
+                }
+
+                String cssClass = calculateCSSClass();
+
+                response("setClass", new AuInvoke(TaskComponent.this, "setClass", cssClass));
+
+                // FIXME: Refactor to another listener
+                updateDeadline();
+                invalidate();
             }
 
-            String cssClass = calculateCSSClass();
-
-            response("setClass", new AuInvoke(TaskComponent.this, "setClass", cssClass));
-
-            // FIXME: Refactor to another listener
-            updateDeadline();
-            invalidate();
         };
 
         this.task.addReloadListener(reloadResourcesTextRequested);
 
-        setAuService(new AuService(){
+        setAuService(new AuService() {
 
-            public boolean service(AuRequest request, boolean everError){
+            public boolean service(AuRequest request, boolean everError) {
                 String command = request.getCommand();
                 final TaskComponent ta;
 
                 if ( command.equals("onUpdatePosition") ){
                     ta = retrieveTaskComponent(request);
 
-                    ta.doUpdatePosition(toInteger(retrieveData(request, "left")));
+                    ta.doUpdatePosition(toInteger(retrieveData(request, "left"))
+                    );
 
                     Events.postEvent(new Event(getId(), ta, request.getData()));
 
@@ -181,7 +201,7 @@ public class TaskComponent extends Div implements AfterCompose {
                 return ((Number) valueFromRequestData).intValue();
             }
 
-            private TaskComponent retrieveTaskComponent(AuRequest request){
+            private TaskComponent retrieveTaskComponent(AuRequest request) {
                 final TaskComponent ta = (TaskComponent) request.getComponent();
 
                 if ( ta == null ) {
@@ -191,7 +211,7 @@ public class TaskComponent extends Div implements AfterCompose {
                 return ta;
             }
 
-            private Object retrieveData(AuRequest request, String key){
+            private Object retrieveData(AuRequest request, String key) {
                 Object value = request.getData().get(key);
                 if ( value == null )
                     throw new UiException(MZk.ILLEGAL_REQUEST_WRONG_DATA, new Object[] { key, this });
@@ -240,15 +260,25 @@ public class TaskComponent extends Div implements AfterCompose {
     public final void afterCompose() {
         updateProperties();
         if ( propertiesListener == null ) {
-            propertiesListener = evt -> updateProperties();
+
+            propertiesListener = new PropertyChangeListener() {
+                @Override
+                public void propertyChange(PropertyChangeEvent evt) {
+                    updateProperties();
+                }
+            };
         }
 
         this.task.addFundamentalPropertiesChangeListener(propertiesListener);
 
         if ( showingAdvancePropertyListener == null ) {
-            showingAdvancePropertyListener = evt -> {
-                if ( isInPage() && !(task instanceof Milestone) ) {
-                    updateCompletionAdvance();
+
+            showingAdvancePropertyListener = new PropertyChangeListener() {
+                @Override
+                public void propertyChange(PropertyChangeEvent evt) {
+                    if ( isInPage() && !(task instanceof Milestone) ) {
+                        updateCompletionAdvance();
+                    }
                 }
             };
         }
@@ -256,9 +286,13 @@ public class TaskComponent extends Div implements AfterCompose {
         this.task.addAdvancesPropertyChangeListener(showingAdvancePropertyListener);
 
         if ( showingReportedHoursPropertyListener == null ) {
-            showingReportedHoursPropertyListener = evt -> {
-                if ( isInPage() && !(task instanceof Milestone) ) {
-                    updateCompletionReportedHours();
+
+            showingReportedHoursPropertyListener = new PropertyChangeListener() {
+                @Override
+                public void propertyChange(PropertyChangeEvent evt) {
+                    if ( isInPage() && !(task instanceof Milestone) ) {
+                        updateCompletionReportedHours();
+                    }
                 }
             };
         }
@@ -266,9 +300,13 @@ public class TaskComponent extends Div implements AfterCompose {
         this.task.addReportedHoursPropertyChangeListener(showingReportedHoursPropertyListener);
 
         if ( showingMoneyCostBarPropertyListener == null ) {
-            showingMoneyCostBarPropertyListener = evt -> {
-                if ( isInPage() && !(task instanceof Milestone) ) {
-                    updateCompletionMoneyCostBar();
+
+            showingMoneyCostBarPropertyListener = new PropertyChangeListener() {
+                @Override
+                public void propertyChange(PropertyChangeEvent evt) {
+                    if ( isInPage() && !(task instanceof Milestone) ) {
+                        updateCompletionMoneyCostBar();
+                    }
                 }
             };
         }
@@ -276,7 +314,14 @@ public class TaskComponent extends Div implements AfterCompose {
         this.task.addMoneyCostBarPropertyChangeListener(showingMoneyCostBarPropertyListener);
 
         if ( criticalPathPropertyListener == null ) {
-            criticalPathPropertyListener = evt -> updateClass();
+
+            criticalPathPropertyListener = new PropertyChangeListener() {
+                @Override
+                public void propertyChange(PropertyChangeEvent evt) {
+                    updateClass();
+                }
+
+            };
         }
 
         this.task.addCriticalPathPropertyChangeListener(criticalPathPropertyListener);
@@ -291,15 +336,6 @@ public class TaskComponent extends Div implements AfterCompose {
         return true;
     }
 
-    private String _color;
-
-    private boolean isTopLevel;
-
-    private final Task task;
-    private transient PropertyChangeListener propertiesListener;
-
-    private String progressType;
-
     public TaskRow getRow() {
         if ( getParent() == null ) {
             throw new IllegalStateException(
@@ -337,9 +373,16 @@ public class TaskComponent extends Div implements AfterCompose {
     void doUpdatePosition(int leftX) {
         GanttDate startBeforeMoving = this.task.getBeginDate();
         final LocalDate newPosition = getMapper().toDate(leftX);
-        this.task.doPositionModifications(position -> position.moveTo(GanttDate.createFrom(newPosition)));
+
+        this.task.doPositionModifications(new IModifications() {
+            @Override
+            public void doIt(IUpdatablePosition position) {
+                position.moveTo(GanttDate.createFrom(newPosition));
+            }
+        });
 
         boolean remainsInOriginalPosition = this.task.getBeginDate().equals(startBeforeMoving);
+
         if ( remainsInOriginalPosition ) {
             updateProperties();
         }
@@ -372,20 +415,18 @@ public class TaskComponent extends Div implements AfterCompose {
         }
     }
 
-    /*
-     * We override the method of renderProperties to put the color property as part
-     * of the style
-     */
+    /* We override the method of renderProperties to put the color property as part of the style */
     protected void renderProperties(ContentRenderer renderer) throws IOException{
+
         if ( getColor() != null )
             setStyle("background-color : " +  getColor());
 
         setWidgetAttribute("movingTasksEnabled", ((Boolean)isMovingTasksEnabled()).toString());
         setWidgetAttribute("resizingTasksEnabled", ((Boolean)isResizingTasksEnabled()).toString());
 
-        /* We can't use setStyle because of restrictions
-         * involved with UiVisualizer#getResponses and the
-         * smartUpdate method (when the request is asynchronous) */
+        /* We can't use setStyle because of restrictions involved with UiVisualizer#getResponses and the
+         * smartUpdate method (when the request is asynchronous)
+         */
         render(renderer, "style", "position : absolute");
 
         render(renderer, "_labelsText", getLabelsText());
@@ -395,10 +436,7 @@ public class TaskComponent extends Div implements AfterCompose {
         super.renderProperties(renderer);
     }
 
-    /*
-     * We send a response to the client to create the arrow we are going to use
-     * to create the dependency
-     */
+    /* We send a response to the client to create the arrow we are going to use to create the dependency */
 
     public void addDependency() {
         response("depkey", new AuInvoke(this, "addDependency"));
@@ -540,9 +578,9 @@ public class TaskComponent extends Div implements AfterCompose {
         if ( task.isShowingAdvances() ) {
             int startPixels = this.task.getBeginDate().toPixels(getMapper());
             String widthAdvancePercentage = pixelsFromStartUntil(startPixels, this.task.getAdvanceBarEndDate()) + "px";
-            response(null, new AuInvoke(this, "resizeCompletion2Advance", widthAdvancePercentage));
+            response(null, new AuInvoke(this, FUNCTION_RESIZE, widthAdvancePercentage));
         } else {
-            response(null, new AuInvoke(this, "resizeCompletion2Advance", "0px"));
+            response(null, new AuInvoke(this, FUNCTION_RESIZE, "0px"));
         }
     }
 
@@ -553,9 +591,9 @@ public class TaskComponent extends Div implements AfterCompose {
             String widthAdvancePercentage =
                     pixelsFromStartUntil(startPixels, this.task.getAdvanceBarEndDate(progressType)) + "px";
 
-            response(null, new AuInvoke(this, "resizeCompletion2Advance", widthAdvancePercentage));
+            response(null, new AuInvoke(this, FUNCTION_RESIZE, widthAdvancePercentage));
         } else {
-            response(null, new AuInvoke(this, "resizeCompletion2Advance", "0px"));
+            response(null, new AuInvoke(this, FUNCTION_RESIZE, "0px"));
         }
     }
 

ganttzk/src/main/java/org/zkoss/ganttz/TaskEditFormComposer.java

@@ -33,11 +33,7 @@ import org.zkoss.zk.ui.util.GenericForwardComposer;
 import org.zkoss.zul.Datebox;
 import org.zkoss.zul.Textbox;
 
-public class TaskEditFormComposer extends GenericForwardComposer {
-
-    public TaskEditFormComposer() {
-
-    }
+public class TaskEditFormComposer extends GenericForwardComposer<Component> {
 
     private Task currentTask;
 
@@ -53,19 +49,22 @@ public class TaskEditFormComposer extends GenericForwardComposer {
 
     private Textbox notes;
 
+    public TaskEditFormComposer() {
+
+    }
+
     @Override
     public void doAfterCompose(Component comp) throws Exception {
         super.doAfterCompose(comp);
     }
 
-    public void init(Component openRelativeTo, Task task) {
+    public void init(Task task) {
         this.currentTask = task;
         this.taskDTO = toDTO(task);
         updateComponentValuesForTask(taskDTO);
     }
 
-    private void updateComponentValuesForTask(
-            TaskDTO taskDTO) {
+    private void updateComponentValuesForTask(TaskDTO taskDTO) {
         name.setValue(taskDTO.name);
         startDateBox.setValue(taskDTO.beginDate);
         endDateBox.setValue(taskDTO.endDate);
@@ -96,10 +95,15 @@ public class TaskEditFormComposer extends GenericForwardComposer {
      * @author Manuel Rego Casasnovas <mrego@igalia.com>
      */
     public static class TaskDTO {
+
         public String name;
+
         public Date beginDate;
+
         public Date endDate;
+
         public Date deadlineDate;
+
         public String notes;
     }
 
@@ -122,18 +126,12 @@ public class TaskEditFormComposer extends GenericForwardComposer {
         return localDate.toDateTimeAtStartOfDay().toDate();
     }
 
-    private void copyFromDTO(final TaskDTO taskDTO, Task currentTask,
-            boolean copyDates) {
+    private void copyFromDTO(final TaskDTO taskDTO, Task currentTask, boolean copyDates) {
         currentTask.setName(taskDTO.name);
         if (copyDates) {
-            currentTask.doPositionModifications(new IModifications() {
-
-                @Override
-                public void doIt(IUpdatablePosition position) {
-                    position.setBeginDate(GanttDate
-                            .createFrom(taskDTO.beginDate));
-                    position.resizeTo(GanttDate.createFrom(taskDTO.endDate));
-                }
+            currentTask.doPositionModifications(position -> {
+                position.setBeginDate(GanttDate.createFrom(taskDTO.beginDate));
+                position.resizeTo(GanttDate.createFrom(taskDTO.endDate));
             });
         }
         currentTask.setNotes(taskDTO.notes);

ganttzk/src/main/java/org/zkoss/ganttz/TaskList.java

@@ -23,15 +23,7 @@ package org.zkoss.ganttz;
 
 import static org.zkoss.ganttz.i18n.I18nHelper._;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-import java.util.WeakHashMap;
+import java.util.*;
 
 import org.apache.commons.lang3.math.Fraction;
 import org.joda.time.LocalDate;
@@ -48,15 +40,13 @@ import org.zkoss.ganttz.timetracker.zoom.IZoomLevelChangedListener;
 import org.zkoss.ganttz.timetracker.zoom.ZoomLevel;
 import org.zkoss.ganttz.util.Interval;
 import org.zkoss.ganttz.util.MenuBuilder;
-import org.zkoss.ganttz.util.MenuBuilder.ItemAction;
-import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.ext.AfterCompose;
 import org.zkoss.zul.Menupopup;
 import org.zkoss.zul.impl.XulElement;
 
 /**
- * Component to show the list of task in the planner
+ * Component to show the list of task in the planner.
+ *
  * @author Javier Moran Rua <jmoran@igalia.com>
  */
 public class TaskList extends XulElement implements AfterCompose {
@@ -79,6 +69,10 @@ public class TaskList extends XulElement implements AfterCompose {
 
     private Map<Task, TaskComponent> taskComponentByTask;
 
+    private Map<TaskContainer, IExpandListener> autoRemovedListers = new WeakHashMap<>();
+
+    private Map<TaskComponent, Menupopup> contextMenus = new HashMap<>();
+
     public TaskList(
             FunctionalityExposedForExtensions<?> context,
             CommandOnTaskContextualized<?> doubleClickCommand,
@@ -114,15 +108,13 @@ public class TaskList extends XulElement implements AfterCompose {
             IDisabilityConfiguration disabilityConfiguration,
             FilterAndParentExpandedPredicates predicate) {
 
-        TaskList result = new TaskList(
+        return new TaskList(
                 context,
                 doubleClickCommand,
                 context.getDiagramGraph().getTopLevelTasks(),
                 commandsOnTasksContextualized,
                 disabilityConfiguration,
                 predicate);
-
-        return result;
     }
 
     public List<DependencyComponent> asDependencyComponents(Collection<? extends Dependency> dependencies) {
@@ -137,11 +129,11 @@ public class TaskList extends XulElement implements AfterCompose {
     }
 
     public DependencyComponent asDependencyComponent(Dependency dependency) {
-        return asDependencyComponents(Arrays.asList(dependency)).get(0);
+        return asDependencyComponents(Collections.singletonList(dependency)).get(0);
     }
 
-    private synchronized void addTaskComponent(TaskRow beforeThis, final TaskComponent taskComponent,
-                                               boolean relocate) {
+    private synchronized void addTaskComponent(
+            TaskRow beforeThis, final TaskComponent taskComponent, boolean relocate) {
 
         insertBefore(taskComponent.getRow(), beforeThis);
         addContextMenu(taskComponent);
@@ -163,7 +155,7 @@ public class TaskList extends XulElement implements AfterCompose {
             currentTotalTasks.addAll(insertionPosition, newTasks);
         }
 
-        // if the position is children of some already existent task when
+        // If the position is children of some already existent task when
         // reloading it will be added if the predicate tells so
         reload(true);
     }
@@ -182,13 +174,7 @@ public class TaskList extends XulElement implements AfterCompose {
         if ( doubleClickCommand == null ) {
             return;
         }
-        taskComponent.addEventListener("onDoubleClick", new EventListener() {
-
-            @Override
-            public void onEvent(Event event) {
-                doubleClickCommand.doAction(taskComponent);
-            }
-        });
+        taskComponent.addEventListener("onDoubleClick", event -> doubleClickCommand.doAction(taskComponent));
     }
 
     private void addContextMenu(final TaskComponent taskComponent) {
@@ -262,20 +248,12 @@ public class TaskList extends XulElement implements AfterCompose {
         return result;
     }
 
-    private Map<TaskContainer, IExpandListener> autoRemovedListers = new WeakHashMap<>();
-
     private void addExpandListenerTo(TaskContainer container) {
         if ( autoRemovedListers.containsKey(container) ) {
             return;
         }
 
-        IExpandListener expandListener = new IExpandListener() {
-
-            @Override
-            public void expandStateChanged(boolean isNowExpanded) {
-                reload(true);
-            }
-        };
+        IExpandListener expandListener = (isNowExpanded -> reload(true));
 
         container.addExpandListener(expandListener);
         autoRemovedListers.put(container, expandListener);
@@ -283,6 +261,7 @@ public class TaskList extends XulElement implements AfterCompose {
 
     private void registerZoomLevelChangedListener() {
         if ( zoomLevelChangedListener == null ) {
+            /* Do not replace it with lambda */
             zoomLevelChangedListener = new IZoomLevelChangedListener() {
                 @Override
                 public void zoomLevelChanged(ZoomLevel detailLevel) {
@@ -301,25 +280,20 @@ public class TaskList extends XulElement implements AfterCompose {
         return interval.getStart().plusDays(daysInto);
     }
 
-    private Map<TaskComponent, Menupopup> contextMenus = new HashMap<>();
-
     private Menupopup getContextMenuFor(TaskComponent taskComponent) {
         if ( contextMenus.get(taskComponent) == null ) {
             MenuBuilder<TaskComponent> menuBuilder = MenuBuilder.on(getPage(), getTaskComponents());
 
             if ( disabilityConfiguration.isAddingDependenciesEnabled() ) {
-                menuBuilder.item(_("Add Dependency"), "/common/img/ico_dependency.png",
-                        new ItemAction<TaskComponent>() {
-                            @Override
-                            public void onEvent(TaskComponent choosen, Event event) {
-                                choosen.addDependency();
-                            }
-                        });
+
+                menuBuilder.item(
+                        _("Add Dependency"), "/common/img/ico_dependency.png",
+                        (chosen, event) -> chosen.addDependency());
             }
 
             for (CommandOnTaskContextualized<?> command : commandsOnTasksContextualized) {
                 if ( command.accepts(taskComponent) ) {
-                        menuBuilder.item(command.getName(), command.getIcon(), command.toItemAction());
+                    menuBuilder.item(command.getName(), command.getIcon(), command.toItemAction());
                 }
             }
 

ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java

@@ -126,14 +126,7 @@ public abstract class Task implements ITaskFundamentalProperties {
 
     @Override
     public void doPositionModifications(final IModifications modifications) {
-        fundamentalProperties.doPositionModifications(new IModifications() {
-
-            @Override
-            public void doIt(IUpdatablePosition p) {
-                modifications.doIt(position);
-
-            }
-        });
+        fundamentalProperties.doPositionModifications(p -> modifications.doIt(position));
     }
 
     private final IUpdatablePosition position = new IUpdatablePosition() {
@@ -174,12 +167,7 @@ public abstract class Task implements ITaskFundamentalProperties {
 
         private IUpdatablePosition getFundamentalPropertiesPosition() {
             final IUpdatablePosition[] result = new IUpdatablePosition[1];
-            fundamentalProperties.doPositionModifications(new IModifications() {
-                @Override
-                public void doIt(IUpdatablePosition position) {
-                    result[0] = position;
-                }
-            });
+            fundamentalProperties.doPositionModifications(position1 -> result[0] = position1);
 
             return result[0];
         }
@@ -342,12 +330,7 @@ public abstract class Task implements ITaskFundamentalProperties {
             return;
         }
 
-        doPositionModifications(new IModifications() {
-            @Override
-            public void doIt(IUpdatablePosition position) {
-                position.resizeTo(GanttDate.createFrom(date));
-            }
-        });
+        doPositionModifications(position1 -> position1.resizeTo(GanttDate.createFrom(date)));
     }
 
     public void removed() {

ganttzk/src/main/java/org/zkoss/ganttz/data/TaskContainer.java

@@ -37,18 +37,18 @@ import org.zkoss.zk.ui.util.Clients;
  */
 public class TaskContainer extends Task {
 
-    public TaskContainer(ITaskFundamentalProperties fundamentalProperties,
-            boolean expanded) {
+    public TaskContainer(ITaskFundamentalProperties fundamentalProperties, boolean expanded) {
         super(fundamentalProperties);
         this.expanded = expanded;
     }
 
     public interface IExpandListener {
-        public void expandStateChanged(boolean isNowExpanded);
+        void expandStateChanged(boolean isNowExpanded);
     }
 
     private static <T> List<T> removeNulls(Collection<T> elements) {
-        ArrayList<T> result = new ArrayList<T>();
+        ArrayList<T> result = new ArrayList<>();
+
         for (T e : elements) {
             if (e != null) {
                 result.add(e);
@@ -57,22 +57,19 @@ public class TaskContainer extends Task {
         return result;
     }
 
-    private static <T extends Comparable<? super T>> T getSmallest(
-            Collection<T> elements) {
+    private static <T extends Comparable<? super T>> T getSmallest(Collection<T> elements) {
         return Collections.min(removeNulls(elements));
     }
 
-    private static <T extends Comparable<? super T>> T getBiggest(
-            Collection<T> elements) {
+    private static <T extends Comparable<? super T>> T getBiggest(Collection<T> elements) {
         return Collections.max(removeNulls(elements));
     }
 
-    private List<Task> tasks = new ArrayList<Task>();
+    private List<Task> tasks = new ArrayList<>();
 
     private boolean expanded = false;
 
-    private WeakReferencedListeners<IExpandListener> expandListeners = WeakReferencedListeners
-            .create();
+    private WeakReferencedListeners<IExpandListener> expandListeners = WeakReferencedListeners.create();
 
     public void addExpandListener(IExpandListener expandListener) {
         expandListeners.addListener(expandListener);
@@ -89,17 +86,20 @@ public class TaskContainer extends Task {
     }
 
     private List<GanttDate> getEndDates() {
-        ArrayList<GanttDate> result = new ArrayList<GanttDate>();
+        ArrayList<GanttDate> result = new ArrayList<>();
+
         for (Task task : tasks) {
             result.add(task.getEndDate());
         }
+
         return result;
     }
 
     public GanttDate getBiggestDateFromChildren() {
-        if (tasks.isEmpty()) {
+        if ( tasks.isEmpty() ) {
             return getEndDate();
         }
+
         return getBiggest(getEndDates());
     }
 
@@ -111,9 +111,11 @@ public class TaskContainer extends Task {
     @Override
     public void setVisible(boolean visible) {
         super.setVisible(visible);
-        if (!this.expanded) {
+
+        if ( !this.expanded ) {
             return;
         }
+
         for (Task task : tasks) {
             task.setVisible(true);
         }
@@ -133,6 +135,7 @@ public class TaskContainer extends Task {
                         }
                     });
         }
+
         refreshTooltips();
     }
 
@@ -171,10 +174,12 @@ public class TaskContainer extends Task {
 
     @Override
     public List<Task> getAllTaskLeafs() {
-        List<Task> result = new ArrayList<Task>();
+        List<Task> result = new ArrayList<>();
+
         for (Task task : tasks) {
             result.addAll(task.getAllTaskLeafs());
         }
+
         return result;
     }
 

ganttzk/src/main/java/org/zkoss/ganttz/data/resourceload/LoadLevel.java

@@ -23,6 +23,9 @@ package org.zkoss.ganttz.data.resourceload;
 
 import org.apache.commons.lang3.Validate;
 
+/**
+ * Represents level of load of some {@link Resource}.
+ */
 public class LoadLevel {
 
     public enum Category {
@@ -56,6 +59,7 @@ public class LoadLevel {
         };
 
         protected abstract boolean contains(int percentage);
+
         public static Category categoryFor(int percentage) {
             for (Category category : values()) {
                 if ( category.contains(percentage) ) {

ganttzk/src/main/java/org/zkoss/ganttz/data/resourceload/LoadTimeLine.java

@@ -37,30 +37,17 @@ public class LoadTimeLine {
     @SuppressWarnings("unchecked")
     private static final Comparator<GanttDate> nullSafeComparator = new NullComparator<>(false);
 
-    public static Comparator<LoadTimeLine> byStartAndEndDate() {
-        return new Comparator<LoadTimeLine>() {
-            @Override
-            public int compare(LoadTimeLine o1, LoadTimeLine o2) {
-                int result = nullSafeComparator.compare(o1.getStartPeriod(), o2.getStartPeriod());
-
-                if ( result == 0 ) {
-                    return nullSafeComparator.compare(o1.getEndPeriod(), o2.getEndPeriod());
-                }
-
-                return result;
-
-            }
-        };
-    }
-
     private final String conceptName;
+
     private final List<LoadPeriod> loadPeriods;
 
     private final TimeLineRole<?> timeLineRole;
+
     private final String type;
 
     private final List<LoadTimeLine> children;
 
+
     public LoadTimeLine(String conceptName,
                         List<LoadPeriod> loadPeriods,
                         TimeLineRole<?> role) {
@@ -101,6 +88,22 @@ public class LoadTimeLine {
 
     }
 
+    public static Comparator<LoadTimeLine> byStartAndEndDate() {
+        return new Comparator<LoadTimeLine>() {
+            @Override
+            public int compare(LoadTimeLine o1, LoadTimeLine o2) {
+                int result = nullSafeComparator.compare(o1.getStartPeriod(), o2.getStartPeriod());
+
+                if ( result == 0 ) {
+                    return nullSafeComparator.compare(o1.getEndPeriod(), o2.getEndPeriod());
+                }
+
+                return result;
+
+            }
+        };
+    }
+
     public List<LoadPeriod> getLoadPeriods() {
         return loadPeriods;
     }
@@ -122,11 +125,7 @@ public class LoadTimeLine {
     }
 
     public GanttDate getStartPeriod() {
-        if ( isEmpty() ) {
-            return null;
-        }
-
-        return getFirst().getStart();
+        return isEmpty() ? null : getFirst().getStart();
     }
 
     public boolean isEmpty() {
@@ -134,11 +133,7 @@ public class LoadTimeLine {
     }
 
     public GanttDate getEndPeriod() {
-        if ( isEmpty() ) {
-            return null;
-        }
-
-        return getLast().getEnd();
+        return isEmpty() ? null : getLast().getEnd();
     }
 
     public String getType() {
@@ -192,7 +187,7 @@ public class LoadTimeLine {
     }
 
     public boolean hasChildren() {
-        return (!children.isEmpty());
+        return !children.isEmpty();
     }
 
     public List<LoadTimeLine> getChildren() {

ganttzk/src/main/java/org/zkoss/ganttz/data/resourceload/TimeLineRole.java

@@ -21,8 +21,6 @@
 
 package org.zkoss.ganttz.data.resourceload;
 
-import org.zkoss.ganttz.i18n.I18nHelper;
-
 /**
  * @author Susana Montes Pedreira <smontes@wirelessgalicia.com>
  */
@@ -39,7 +37,7 @@ public class TimeLineRole<T> {
     }
 
     public boolean isVisibleScheduled() {
-        return type != null ? type.isVisibleScheduled() : false;
+        return type != null && type.isVisibleScheduled();
     }
 
     public T getEntity() {
@@ -55,7 +53,10 @@ public class TimeLineRole<T> {
      */
     public enum TimeLineRoleEnum {
 
-        NONE(_("None")), WORKER(_("Worker")), ORDER(_("Project")), TASK(_("Task")) {
+        NONE(_("None")),
+        WORKER(_("Worker")),
+        ORDER(_("Project")),
+        TASK(_("Task")) {
             @Override
             public boolean isVisibleScheduled() {
                 return true;
@@ -63,19 +64,19 @@ public class TimeLineRole<T> {
         },
         CRITERION(_("Criterion"));
 
+        private String name;
+
+        TimeLineRoleEnum(String name) {
+            this.name = name;
+        }
+
         /**
-         * Forces to mark the string as needing translation
+         * Forces to mark the string as needing translation.
          */
         private static String _(String string) {
             return string;
         }
 
-        private String name;
-
-        private TimeLineRoleEnum(String name) {
-            this.name = name;
-        }
-
         public static TimeLineRoleEnum create(String name) {
             TimeLineRoleEnum requiredTimeLineRole = TimeLineRoleEnum.NONE;
             if (name != null) {
@@ -88,8 +89,9 @@ public class TimeLineRole<T> {
             return requiredTimeLineRole;
         }
 
+        @Override
         public String toString() {
-            return I18nHelper._(this.name);
+            return _(this.name);
         }
 
         public boolean isVisibleScheduled() {

ganttzk/src/main/java/org/zkoss/ganttz/extensions/ICommand.java

@@ -23,25 +23,24 @@ package org.zkoss.ganttz.extensions;
 
 
 /**
- * An action that can be applied to the planner and it's wanted to be available
- * to the user <br />
+ * An action that can be applied to the planner and it's wanted to be available to the user <br />
  *
  * @author Óscar González Fernández <ogonzalez@igalia.com>
  * @author Manuel Rego Casasnovas <rego@igalia.com>
  */
 public interface ICommand<T> {
 
-    public String getName();
+    String getName();
 
-    public void doAction(IContext<T> context);
+    void doAction(IContext<T> context);
 
-    public String getImage();
+    String getImage();
 
     boolean isDisabled();
 
     /**
-     * Describes if a command is for the planner toolbar. Otherwise it'll be
-     * inserted in the common toolbar.
+     * Describes if a command is for the planner toolbar.
+     * Otherwise it will be inserted in the common toolbar.
      */
     boolean isPlannerCommand();
 

ganttzk/src/main/java/org/zkoss/ganttz/i18n/I18nHelper.java

@@ -34,7 +34,7 @@ public class I18nHelper {
     private static HashMap<Locale, I18n> localesCache = new HashMap<>();
 
     public static I18n getI18n() {
-        if ( localesCache.keySet().contains(Locales.getCurrent()) ) {
+        if (localesCache.keySet().contains(Locales.getCurrent())) {
             return localesCache.get(Locales.getCurrent());
         }
 
@@ -48,7 +48,15 @@ public class I18nHelper {
 
         return i18n;
     }
-    // TODO refactor symbol _
+
+
+    //TODO It should be changed since JDK9.
+    /**
+     * Use of '_' as an identifier might not be supported in releases after Java SE 8.
+     *
+     * @param str
+     * @return Text depends on locale
+     */
     public static String _(String str) {
         return getI18n().tr(str);
     }
@@ -65,8 +73,7 @@ public class I18nHelper {
         return getI18n().tr(text, o1, o2, o3);
     }
 
-    public static String _(String text, Object o1, Object o2, Object o3,
-            Object o4) {
+    public static String _(String text, Object o1, Object o2, Object o3, Object o4) {
         return getI18n().tr(text, o1, o2, o3, o4);
     }
 

ganttzk/src/main/java/org/zkoss/ganttz/resourceload/IFilterChangedListener.java

@@ -23,6 +23,6 @@ package org.zkoss.ganttz.resourceload;
 
 public interface IFilterChangedListener {
 
-    public void filterChanged(boolean filter);
+    void filterChanged(boolean filter);
 
 }

ganttzk/src/main/java/org/zkoss/ganttz/resourceload/IPaginationFilterChangedListener.java

@@ -23,6 +23,6 @@ package org.zkoss.ganttz.resourceload;
 
 public interface IPaginationFilterChangedListener {
 
-    public void filterChanged(int initialPosition);
+    void filterChanged(int initialPosition);
 
 }

ganttzk/src/main/java/org/zkoss/ganttz/resourceload/ISeeScheduledOfListener.java

@@ -25,6 +25,6 @@ import org.zkoss.ganttz.data.resourceload.LoadTimeLine;
 
 public interface ISeeScheduledOfListener {
 
-    public void seeScheduleOf(LoadTimeLine taskLine);
+    void seeScheduleOf(LoadTimeLine taskLine);
 
 }

ganttzk/src/main/java/org/zkoss/ganttz/resourceload/ResourceLoadComponent.java

@@ -36,11 +36,7 @@ import org.zkoss.ganttz.timetracker.TimeTracker;
 import org.zkoss.ganttz.timetracker.zoom.IZoomLevelChangedListener;
 import org.zkoss.ganttz.timetracker.zoom.ZoomLevel;
 import org.zkoss.ganttz.util.MenuBuilder;
-import org.zkoss.ganttz.util.MenuBuilder.ItemAction;
 import org.zkoss.ganttz.util.WeakReferencedListeners;
-import org.zkoss.ganttz.util.WeakReferencedListeners.IListenerNotification;
-import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.sys.ContentRenderer;
 import org.zkoss.zul.Div;
 import org.zkoss.zul.Menupopup;
@@ -48,38 +44,54 @@ import org.zkoss.zul.impl.XulElement;
 
 /**
  * This class wraps ResourceLoad data inside an specific HTML Div component.
+ *
  * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
+ * @author Vova Perebykivskyi <vova@libreplan-enterprise.com>
  */
 public class ResourceLoadComponent extends XulElement {
 
-    public static ResourceLoadComponent create(TimeTracker timeTracker,
-            LoadTimeLine loadLine) {
-        return new ResourceLoadComponent(timeTracker, loadLine);
-    }
-
     private final LoadTimeLine loadLine;
-    private final TimeTracker timeTracker;
-    private transient IZoomLevelChangedListener zoomChangedListener;
-    private WeakReferencedListeners<ISeeScheduledOfListener> scheduleListeners = WeakReferencedListeners
-            .create();
 
-    private ResourceLoadComponent(final TimeTracker timeTracker,
-            final LoadTimeLine loadLine) {
+    private final TimeTracker timeTracker;
+
+    private transient IZoomLevelChangedListener zoomChangedListener;
+
+    private WeakReferencedListeners<ISeeScheduledOfListener> scheduleListeners = WeakReferencedListeners.create();
+
+    private Map<Div, Menupopup> contextMenus = new HashMap<>();
+
+    private ResourceLoadComponent(final TimeTracker timeTracker, final LoadTimeLine loadLine) {
         this.loadLine = loadLine;
         this.timeTracker = timeTracker;
         createChildren(loadLine, timeTracker.getMapper());
+
+        /* Do not replace it with lambda */
         zoomChangedListener = new IZoomLevelChangedListener() {
 
+            /**
+             * In general it is working like, on every zoomChanged :
+             * 1. Remove all LoadLines ( divs ).
+             * 2. Create new ones ( for selected zoom mode ).
+             * 3. Redraw insertionPointRightPanel component ( Div ).
+             */
             @Override
             public void zoomLevelChanged(ZoomLevel detailLevel) {
                 getChildren().clear();
                 createChildren(loadLine, timeTracker.getMapper());
+                if ( !getFellows().isEmpty() ) {
+                    getFellow("insertionPointRightPanel").invalidate();
+                }
                 invalidate();
             }
         };
+
         this.timeTracker.addZoomListener(zoomChangedListener);
     }
 
+    public static ResourceLoadComponent create(TimeTracker timeTracker, LoadTimeLine loadLine) {
+        return new ResourceLoadComponent(timeTracker, loadLine);
+    }
+
     private void createChildren(final LoadTimeLine loadLine, IDatesMapper mapper) {
         List<Div> divs = createDivsForPeriods(mapper, loadLine.getLoadPeriods());
         for (Div div : divs) {
@@ -95,71 +107,50 @@ public class ResourceLoadComponent extends XulElement {
     }
 
     private void addDoubleClickAction(final Div div, final LoadTimeLine loadLine) {
-        div.addEventListener("onDoubleClick", new EventListener() {
-            @Override
-            public void onEvent(Event event) {
-                schedule(loadLine);
-            }
-        });
+        div.addEventListener("onDoubleClick", event -> schedule(loadLine));
     }
 
-    private void addContextMenu(final List<Div> divs, final Div div,
-            final LoadTimeLine loadLine) {
+    private void addContextMenu(final List<Div> divs, final Div div, final LoadTimeLine loadLine) {
         /*
          * This EventListener could be replaced with
          * div.setContext(getContextMenuFor(divs, div, loadLine)) but
-         * on this case this is not valid as we'll got an exception.
+         * in this case this is not valid as we'll got an exception.
+         *
          * As this component (ResourceLoadComponent) hasn't be added to
          * a page yet, its getPage() method will return null and a
-         * non-null page is required by MenuBuilder or a NullPointerException
-         * will be raised.
-         * */
-        div.addEventListener("onRightClick", new EventListener() {
-            @Override
-            public void onEvent(Event event) {
-                try {
-                    getContextMenuFor(divs, div, loadLine).open(div);
-                } catch (Exception e) {
-                    e.printStackTrace();
-                }
+         * non-null page is required by MenuBuilder or a NullPointerException will be raised.
+         */
+
+        div.addEventListener("onRightClick", event ->  {
+            try {
+                getContextMenuFor(divs, div, loadLine).open(div);
+            } catch (Exception e) {
+                e.printStackTrace();
             }
         });
     }
 
     public void schedule(final LoadTimeLine taskLine) {
-
-        scheduleListeners
-                .fireEvent(new IListenerNotification<ISeeScheduledOfListener>() {
-                    @Override
-                    public void doNotify(ISeeScheduledOfListener listener) {
-                        listener.seeScheduleOf(taskLine);
-                    }
-                });
+        scheduleListeners.fireEvent(listener -> listener.seeScheduleOf(taskLine));
     }
 
-    public void addSeeScheduledOfListener(
-            ISeeScheduledOfListener seeScheduledOfListener) {
+    public void addSeeScheduledOfListener(ISeeScheduledOfListener seeScheduledOfListener) {
         scheduleListeners.addListener(seeScheduledOfListener);
     }
 
-    private Map<Div, Menupopup> contextMenus = new HashMap<Div, Menupopup>();
-
-    private Menupopup getContextMenuFor(final List<Div> divs, final Div div,
-            final LoadTimeLine loadLine) {
+    private Menupopup getContextMenuFor(final List<Div> divs, final Div div, final LoadTimeLine loadLine) {
         if (contextMenus.get(div) == null) {
 
             MenuBuilder<Div> menuBuilder = MenuBuilder.on(getPage(), divs);
-            menuBuilder.item(_("See resource allocation"),
-                    "/common/img/ico_allocation.png", new ItemAction<Div>() {
 
-                        @Override
-                        public void onEvent(Div choosen, Event event) {
-                            schedule(loadLine);
-                        }
-                    });
+            menuBuilder.item(
+                    _("See resource allocation"),
+                    "/common/img/ico_allocation.png",
+                    (chosen, event) -> schedule(loadLine));
 
             Menupopup result = menuBuilder.createWithoutSettingContext();
             contextMenus.put(div, result);
+
             return result;
 
         }
@@ -174,52 +165,56 @@ public class ResourceLoadComponent extends XulElement {
         return loadLine.getType();
     }
 
+    LoadTimeLine getLoadLine() {
+        return loadLine;
+    }
 
-    private static List<Div> createDivsForPeriods(IDatesMapper datesMapper,
-            List<LoadPeriod> loadPeriods) {
-        List<Div> result = new ArrayList<Div>();
+    private static List<Div> createDivsForPeriods(IDatesMapper datesMapper, List<LoadPeriod> loadPeriods) {
+        List<Div> result = new ArrayList<>();
         for (LoadPeriod loadPeriod : loadPeriods) {
             result.add(createDivForPeriod(datesMapper, loadPeriod));
         }
         return result;
     }
 
-    private static Div createDivForPeriod(IDatesMapper datesMapper,
-            LoadPeriod loadPeriod) {
+    private static Div createDivForPeriod(IDatesMapper datesMapper, LoadPeriod loadPeriod) {
         Div result = new Div();
-        result.setClass(String.format("taskassignmentinterval %s", loadPeriod
-                .getLoadLevel().getCategory()));
+        result.setClass(String.format("taskassignmentinterval %s", loadPeriod.getLoadLevel().getCategory()));
+
+        String load = _("Load: {0}%", loadPeriod.getLoadLevel().getPercentage()) + ", ";
 
-        String load = _("Load: {0}%", loadPeriod.getLoadLevel().getPercentage())
-                + ", ";
         if (loadPeriod.getLoadLevel().getPercentage() == Integer.MAX_VALUE) {
             load = "";
         }
-        result.setTooltiptext(load
-                + _("available effort: {0}, assigned effort: {1}",
-                        loadPeriod.getAvailableEffort(),
-                        loadPeriod.getAssignedEffort()));
+
+        result.setTooltiptext(
+                load +
+                        _("available effort: {0}, assigned effort: {1}",
+                                loadPeriod.getAvailableEffort(),
+                                loadPeriod.getAssignedEffort()));
 
         result.setLeft(forCSS(getStartPixels(datesMapper, loadPeriod)));
         result.setWidth(forCSS(getWidthPixels(datesMapper, loadPeriod)));
+
         return result;
     }
 
-    private static int getWidthPixels(IDatesMapper datesMapper,
-            LoadPeriod loadPeriod) {
-        return Math.max(loadPeriod.getEnd().toPixels(datesMapper)
-                - getStartPixels(datesMapper, loadPeriod), 0);
+    private static int getWidthPixels(IDatesMapper datesMapper, LoadPeriod loadPeriod) {
+        return Math.max(loadPeriod.getEnd().toPixels(datesMapper) - getStartPixels(datesMapper, loadPeriod), 0);
     }
 
     private static String forCSS(int pixels) {
         return String.format("%dpx", pixels);
     }
 
-    private static int getStartPixels(IDatesMapper datesMapper,
-            LoadPeriod loadPeriod) {
+    private static int getStartPixels(IDatesMapper datesMapper, LoadPeriod loadPeriod) {
         return loadPeriod.getStart().toPixels(datesMapper);
     }
 
+    /**
+     * It is drawing chart on right pane for each ResourceLoad row.
+     */
+    @Override
     protected void renderProperties(ContentRenderer renderer) throws IOException{
         render(renderer, "_resourceLoadName", getResourceLoadName());
         render(renderer, "_resourceLoadType", getResourceLoadType());

ganttzk/src/main/java/org/zkoss/ganttz/resourceload/ResourceLoadLeftPane.java

@@ -24,65 +24,106 @@ package org.zkoss.ganttz.resourceload;
 import static org.zkoss.ganttz.i18n.I18nHelper._;
 
 import java.util.ArrayList;
-import java.util.Iterator;
 import java.util.List;
+import java.util.HashSet;
 
 import org.zkoss.ganttz.data.resourceload.LoadTimeLine;
 import org.zkoss.ganttz.util.MutableTreeModel;
 import org.zkoss.ganttz.util.WeakReferencedListeners;
-import org.zkoss.ganttz.util.WeakReferencedListeners.IListenerNotification;
 import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.HtmlMacroComponent;
-import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.event.OpenEvent;
-import org.zkoss.zul.Button;
-import org.zkoss.zul.Div;
-import org.zkoss.zul.Label;
-import org.zkoss.zul.Popup;
 import org.zkoss.zul.Treecell;
-import org.zkoss.zul.Treechildren;
 import org.zkoss.zul.Treeitem;
 import org.zkoss.zul.TreeitemRenderer;
 import org.zkoss.zul.Treerow;
-import org.zkoss.zul.api.Tree;
+import org.zkoss.zul.Button;
+import org.zkoss.zul.Div;
+import org.zkoss.zul.Label;
+import org.zkoss.zul.Tree;
+import org.zkoss.zul.Treechildren;
 
+/**
+ * Works with left pane of Resource Load page. Also works with right pane ( a little bit ).
+ *
+ * @author Óscar González Fernández
+ * @author Manuel Rego Casasnovas
+ * @author Susana Montes Pedreira
+ * @author Lorenzo Tilve
+ * @author Jacobo Aragunde Pérez
+ * @author Vova Perebykivskyi <vova@libreplan-enterprise.com>
+ */
 public class ResourceLoadLeftPane extends HtmlMacroComponent {
 
     private MutableTreeModel<LoadTimeLine> modelForTree;
+
     private final ResourceLoadList resourceLoadList;
 
-    private WeakReferencedListeners<ISeeScheduledOfListener> scheduleListeners = WeakReferencedListeners
-            .create();
+    private WeakReferencedListeners<ISeeScheduledOfListener> scheduleListeners = WeakReferencedListeners.create();
 
-    public ResourceLoadLeftPane(
-MutableTreeModel<LoadTimeLine> modelForTree,
-            ResourceLoadList resourceLoadList) {
+    /**
+     * {@link ResourceLoadLeftPane#onOpenEventQueue}, {@link OnOpenEvent} and proceedOnOpenEventQueue()
+     * were created because of problem:
+     * after migration from ZK5 to ZK8 onOpen event had been calling before render().
+     * It produced a problem.
+     * On onOpen event we are calculating closest items to treeItem.
+     * render() was not called so, treeItem row had no value.
+     * It made calculatedClosedItems(treeItem).isEmpty() to return true, even if it is not!
+     *
+     * http://forum.zkoss.org/question/101294/event-before-render-treeitem/
+     */
+    private OnOpenEvent onOpenEventQueue = null;
+
+    /**
+     * Made to know if {@link LoadTimeLine} was rendered.
+     */
+    private HashSet<LoadTimeLine> renderedLines;
+
+
+    public ResourceLoadLeftPane(MutableTreeModel<LoadTimeLine> modelForTree, ResourceLoadList resourceLoadList) {
         this.resourceLoadList = resourceLoadList;
         this.modelForTree = modelForTree;
+        this.renderedLines = new HashSet<>();
     }
 
-
     @Override
     public void afterCompose() {
         super.afterCompose();
+
         getContainerTree().setModel(modelForTree);
-        getContainerTree().setTreeitemRenderer(getRendererForTree());
+        getContainerTree().setItemRenderer(getRendererForTree());
+
+        /* Force call overridden render() */
+        try {
+            if ( !this.resourceLoadList.getChildren().isEmpty() ) {
+                getRendererForTree().render(
+                        new Treeitem(""),
+                        ((ResourceLoadComponent) this.resourceLoadList.getFirstChild()).getLoadLine(),
+                        0);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
     }
 
     private TreeitemRenderer getRendererForTree() {
         return new TreeitemRenderer() {
             @Override
-            public void render(Treeitem item, Object data)
-                    {
-                LoadTimeLine line = (LoadTimeLine) data;
-                item.setOpen(false);
-                item.setValue(line);
+            public void render(Treeitem treeitem, Object o, int index) throws Exception {
+                LoadTimeLine line = (LoadTimeLine) o;
+                treeitem.setOpen(false);
+                treeitem.setValue(line);
 
                 Treerow row = new Treerow();
                 Treecell cell = new Treecell();
                 Component component = createComponent(line);
-                item.appendChild(row);
+
+                /* Clear existing Treerows */
+                if ( !treeitem.getChildren().isEmpty() ) {
+                    treeitem.getChildren().clear();
+                }
+
+                treeitem.appendChild(row);
                 row.appendChild(cell);
 
                 appendOperations(cell, line);
@@ -90,70 +131,86 @@ MutableTreeModel<LoadTimeLine> modelForTree,
                 cell.appendChild(component);
 
                 collapse(line);
-                addExpandedListener(item, line);
+                addExpandedListener(treeitem, line);
 
                 row.setSclass("resourceload-leftpanel-row");
+
+                if ( onOpenEventQueue != null ) {
+                    processOnOpenEventQueue();
+                }
+
+                renderedLines.add(line);
             }
 
-            private void appendOperations(final Treecell cell,
-                    final LoadTimeLine line) {
-                if (line.getRole().isVisibleScheduled()) {
+            private void processOnOpenEventQueue() {
+                if ( onOpenEventQueue.event.isOpen() ) {
+                    List<LoadTimeLine> closed = calculatedClosedItems(onOpenEventQueue.treeitem);
+                    expand(onOpenEventQueue.line, closed);
+                } else {
+                    collapse(onOpenEventQueue.line);
+                }
+
+                /*
+                 * When queue processed, clean object, to make it kind of "unique" or "one time only".
+                 */
+                onOpenEventQueue = null;
+            }
+
+            private void appendOperations(final Treecell cell, final LoadTimeLine line) {
+                if ( line.getRole().isVisibleScheduled() ) {
                     appendButtonPlan(cell, line);
                 }
             }
 
-            private void appendButtonPlan(final Treecell cell,
-                    final LoadTimeLine taskLine) {
+            private void appendButtonPlan(final Treecell cell, final LoadTimeLine taskLine) {
                 Button buttonPlan = new Button();
                 buttonPlan.setSclass("icono");
                 buttonPlan.setImage("/common/img/ico_planificador1.png");
                 buttonPlan.setHoverImage("/common/img/ico_planificador.png");
                 buttonPlan.setTooltiptext(_("See scheduling"));
-                buttonPlan.addEventListener("onClick", new EventListener() {
-                    @Override
-                    public void onEvent(Event event) {
-                        schedule(taskLine);
-                    }
-                });
+                buttonPlan.addEventListener("onClick", event -> schedule(taskLine));
+
                 cell.appendChild(buttonPlan);
             }
 
+            /**
+             * Do not replace it with lambda.
+             */
             public void schedule(final LoadTimeLine taskLine) {
-
-                scheduleListeners
-                        .fireEvent(new IListenerNotification<ISeeScheduledOfListener>() {
+                scheduleListeners.fireEvent(
+                        new WeakReferencedListeners.IListenerNotification<ISeeScheduledOfListener>() {
                             @Override
-                            public void doNotify(
-                                    ISeeScheduledOfListener listener) {
+                            public void doNotify(ISeeScheduledOfListener listener) {
                                 listener.seeScheduleOf(taskLine);
                             }
                         });
             }
 
-            private void addExpandedListener(final Treeitem item,
-                    final LoadTimeLine line) {
-                item.addEventListener("onOpen", new EventListener() {
-                    @Override
-                    public void onEvent(Event event) {
-                        OpenEvent openEvent = (OpenEvent) event;
-                        if (openEvent.isOpen()) {
-                            List<LoadTimeLine> closed = calculatedClosedItems(item);
-                            expand(line, closed);
-                        } else {
-                            collapse(line);
+            private void addExpandedListener(final Treeitem item, final LoadTimeLine line) {
+                item.addEventListener("onOpen", event ->  {
+                    OpenEvent openEvent = (OpenEvent) event;
+
+                    if ( openEvent.isOpen() ) {
+
+                        onOpenEventQueue = new OnOpenEvent(item, line, openEvent);
+
+                        /* If line was rendered than we need to call expand manually */
+                        if ( renderedLines.contains(line) ) {
+                            processOnOpenEventQueue();
                         }
+
+                    } else {
+                        collapse(line);
                     }
                 });
             }
 
             private Component createComponent(LoadTimeLine line) {
-                return isTopLevel(line) ? createFirstLevel(line)
-                        : createSecondLevel(line);
+                return isTopLevel(line) ? createFirstLevel(line) : createSecondLevel(line);
             }
 
             private boolean isTopLevel(LoadTimeLine line) {
-                int[] path = modelForTree.getPath(modelForTree.getRoot(), line);
-                return path.length == 0;
+                return modelForTree.getPath(modelForTree.getRoot(), line).length == 0;
             }
         };
     }
@@ -167,40 +224,45 @@ MutableTreeModel<LoadTimeLine> modelForTree,
     }
 
     private List<LoadTimeLine> calculatedClosedItems(Treeitem item) {
-        List<LoadTimeLine> result = new ArrayList<LoadTimeLine>();
+        List<LoadTimeLine> result = new ArrayList<>();
         Treechildren treeChildren = item.getTreechildren();
-        if (treeChildren != null) {
-            List<Treeitem> myTreeItems = (List<Treeitem>) treeChildren
-                    .getChildren();
-            Iterator<Treeitem> iterator = myTreeItems.iterator();
-            while (iterator.hasNext()) {
-                Treeitem child = (Treeitem) iterator.next();
-                if (!child.isOpen()) {
+
+        if ( treeChildren != null ) {
+
+            List<Treeitem> myTreeItems = treeChildren.getChildren();
+            for (Treeitem child : myTreeItems) {
+
+                if ( !child.isOpen() ) {
                     result.addAll(getLineChildrenBy(child));
                 } else {
                     result.addAll(calculatedClosedItems(child));
                 }
             }
         }
+
         return result;
     }
 
     private List<LoadTimeLine> getLineChildrenBy(Treeitem item) {
-        List<LoadTimeLine> result = new ArrayList<LoadTimeLine>();
+        List<LoadTimeLine> result = new ArrayList<>();
         LoadTimeLine line = getLineByTreeitem(item);
-        if (line != null) {
+
+        if ( line != null ) {
             result.addAll(line.getAllChildren());
         }
+
         return result;
     }
 
     private LoadTimeLine getLineByTreeitem(Treeitem child) {
-        LoadTimeLine line = null;
+        LoadTimeLine line;
+
         try {
-            line = (LoadTimeLine) child.getValue();
+            line = child.getValue();
         } catch (Exception e) {
             return null;
         }
+
         return line;
     }
 
@@ -211,12 +273,14 @@ MutableTreeModel<LoadTimeLine> modelForTree,
     private Component createFirstLevel(LoadTimeLine main) {
         Div result = createLabelWithName(main);
         result.setSclass("firstlevel");
+
         return result;
     }
 
     private Component createSecondLevel(LoadTimeLine loadTimeLine) {
         Div result = createLabelWithName(loadTimeLine);
         result.setSclass("secondlevel");
+
         return result;
     }
 
@@ -224,20 +288,32 @@ MutableTreeModel<LoadTimeLine> modelForTree,
         Div result = new Div();
         Label label = new Label();
         final String conceptName = main.getConceptName();
+
         label.setValue(conceptName);
         result.appendChild(label);
+
         return result;
     }
 
-    private static Popup createPopup(Div parent, String originalValue) {
-        Popup result = new Popup();
-        result.appendChild(new Label(originalValue));
-        parent.appendChild(result);
-        return result;
-    }
-
-    public void addSeeScheduledOfListener(
-            ISeeScheduledOfListener seeScheduledOfListener) {
+    public void addSeeScheduledOfListener(ISeeScheduledOfListener seeScheduledOfListener) {
         scheduleListeners.addListener(seeScheduledOfListener);
     }
+
+    /**
+     * Info about onOpenEvent.
+     */
+    private class OnOpenEvent {
+
+        private LoadTimeLine line;
+
+        private Treeitem treeitem;
+
+        private OpenEvent event;
+
+        OnOpenEvent(Treeitem treeitem, LoadTimeLine line, OpenEvent event) {
+            this.line = line;
+            this.treeitem = treeitem;
+            this.event = event;
+        }
+    }
 }

ganttzk/src/main/java/org/zkoss/ganttz/resourceload/ResourceLoadList.java

@@ -40,27 +40,26 @@ import org.zkoss.zul.impl.XulElement;
 
 /**
  * Component to include a list of ResourceLoads inside the ResourcesLoadPanel.
+ *
  * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
+ * @author Vova Perebykivskyi <vova@libreplan-enterprise.com>
  */
 public class ResourceLoadList extends XulElement {
 
-    private final IZoomLevelChangedListener zoomListener;
+    private Map<LoadTimeLine, ResourceLoadComponent> fromTimeLineToComponent = new HashMap<>();
 
-    private Map<LoadTimeLine, ResourceLoadComponent> fromTimeLineToComponent = new HashMap<LoadTimeLine, ResourceLoadComponent>();
-
-    public ResourceLoadList(TimeTracker timeTracker,
-            MutableTreeModel<LoadTimeLine> timelinesTree) {
-        zoomListener = adjustTimeTrackerSizeListener();
+    public ResourceLoadList(TimeTracker timeTracker, MutableTreeModel<LoadTimeLine> timelinesTree) {
+        IZoomLevelChangedListener zoomListener = adjustTimeTrackerSizeListener();
         timeTracker.addZoomListener(zoomListener);
         LoadTimeLine current = timelinesTree.getRoot();
-        List<LoadTimeLine> toInsert = new ArrayList<LoadTimeLine>();
+        List<LoadTimeLine> toInsert = new ArrayList<>();
         fill(timelinesTree, current, toInsert);
         insertAsComponents(timeTracker, toInsert);
     }
 
-    private void fill(MutableTreeModel<LoadTimeLine> timelinesTree,
-            LoadTimeLine current, List<LoadTimeLine> result) {
+    private void fill(MutableTreeModel<LoadTimeLine> timelinesTree, LoadTimeLine current, List<LoadTimeLine> result) {
         final int length = timelinesTree.getChildCount(current);
+
         for (int i = 0; i < length; i++) {
             LoadTimeLine child = timelinesTree.getChild(current, i);
             result.add(child);
@@ -70,41 +69,48 @@ public class ResourceLoadList extends XulElement {
 
     private IZoomLevelChangedListener adjustTimeTrackerSizeListener() {
         return new IZoomLevelChangedListener() {
-
             @Override
             public void zoomLevelChanged(ZoomLevel detailLevel) {
-                response(null, new AuInvoke(ResourceLoadList.this,
-                        "adjustTimeTrackerSize"));
-                response(null, new AuInvoke(ResourceLoadList.this,
-                        "adjustResourceLoadRows"));
+                response(null, new AuInvoke(ResourceLoadList.this, "adjustTimeTrackerSize"));
+                response(null, new AuInvoke(ResourceLoadList.this, "adjustResourceLoadRows"));
             }
         };
     }
 
-    private void insertAsComponents(TimeTracker timetracker,
-            List<LoadTimeLine> children) {
+    private void insertAsComponents(TimeTracker timetracker, List<LoadTimeLine> children) {
         for (LoadTimeLine loadTimeLine : children) {
-            ResourceLoadComponent component = ResourceLoadComponent.create(
-                    timetracker, loadTimeLine);
+            ResourceLoadComponent component = ResourceLoadComponent.create(timetracker, loadTimeLine);
             appendChild(component);
             fromTimeLineToComponent.put(loadTimeLine, component);
         }
     }
 
+    /**
+     * On Resources Load page it will collapse inherited resources.
+     *
+     * @param line
+     */
     public void collapse(LoadTimeLine line) {
         for (LoadTimeLine l : line.getAllChildren()) {
             getComponentFor(l).detach();
         }
 
+        /* In ZK8, after detaching component, component will be still visible, so we need to redraw it */
+        this.invalidate();
+
         Clients.evalJavaScript(getWidgetClass() + ".getInstance().recalculateTimeTrackerHeight();");
     }
 
     private ResourceLoadComponent getComponentFor(LoadTimeLine l) {
-        ResourceLoadComponent resourceLoadComponent = fromTimeLineToComponent
-                .get(l);
-        return resourceLoadComponent;
+        return fromTimeLineToComponent.get(l);
     }
 
+    /**
+     * On Resources Load page it will expand inherited resources.
+     *
+     * @param line
+     * @param closed
+     */
     public void expand(LoadTimeLine line, List<LoadTimeLine> closed) {
         ResourceLoadComponent parentComponent = getComponentFor(line);
         Component nextSibling = parentComponent.getNextSibling();
@@ -118,19 +124,21 @@ public class ResourceLoadList extends XulElement {
             nextSibling = child;
         }
 
+        /* In ZK8, after detaching component, component will be still visible, so we need to redraw it */
+        this.invalidate();
+
         Clients.evalJavaScript(getWidgetClass() + ".getInstance().recalculateTimeTrackerHeight();");
     }
 
     private List<LoadTimeLine> getChildrenReverseOrderFor(LoadTimeLine line) {
         List<LoadTimeLine> childrenOf = line.getAllChildren();
         Collections.reverse(childrenOf);
+
         return childrenOf;
     }
 
-    public void addSeeScheduledOfListener(
-            ISeeScheduledOfListener seeScheduledOfListener) {
-        for (Entry<LoadTimeLine, ResourceLoadComponent> entry : fromTimeLineToComponent
-                .entrySet()) {
+    public void addSeeScheduledOfListener(ISeeScheduledOfListener seeScheduledOfListener) {
+        for (Entry<LoadTimeLine, ResourceLoadComponent> entry : fromTimeLineToComponent.entrySet()) {
             entry.getValue().addSeeScheduledOfListener(seeScheduledOfListener);
         }
     }

ganttzk/src/main/java/org/zkoss/ganttz/resourceload/ResourcesLoadPanel.java

@@ -38,25 +38,24 @@ import org.zkoss.ganttz.util.LongOperationFeedback;
 import org.zkoss.ganttz.util.LongOperationFeedback.ILongOperation;
 import org.zkoss.ganttz.util.MutableTreeModel;
 import org.zkoss.ganttz.util.WeakReferencedListeners;
-import org.zkoss.ganttz.util.WeakReferencedListeners.IListenerNotification;
 import org.zkoss.zk.au.out.AuInvoke;
 import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.HtmlMacroComponent;
-import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.event.Events;
 import org.zkoss.zul.Button;
 import org.zkoss.zul.Comboitem;
 import org.zkoss.zul.ListModel;
 import org.zkoss.zul.Separator;
 import org.zkoss.zul.SimpleListModel;
-import org.zkoss.zul.api.Combobox;
-import org.zkoss.zul.api.Listbox;
-import org.zkoss.zul.api.South;
+import org.zkoss.zul.Combobox;
+import org.zkoss.zul.Listbox;
+import org.zkoss.zul.South;
+import org.zkoss.zul.Div;
 
 public class ResourcesLoadPanel extends HtmlMacroComponent {
 
     public interface IToolbarCommand {
+
         void doAction();
 
         String getLabel();
@@ -84,17 +83,24 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
 
     private WeakReferencedListeners<IFilterChangedListener> zoomListeners = WeakReferencedListeners.create();
 
-    private Listbox listZoomLevels;
-
     private final String FILTER_RESOURCES = _("Resources");
+
     private final String FILTER_CRITERIA = _("Generic allocation criteria");
+
+    private final String FILTER_BY_NAME_COMBO_COMPONENT = "filterByNameCombo";
+
     private String feedBackMessage;
+
     private Boolean filterbyResources;
 
     private boolean refreshNameFilter = true;
+
     private int filterByNamePosition = 0;
+
     private int numberOfGroupsByName = 10;
+
     private int lastSelectedName = 0;
+
     private final PaginationType paginationType;
 
     private WeakReferencedListeners<IPaginationFilterChangedListener> nameFilterListener =
@@ -113,12 +119,14 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
 
     private Component secondOptionalFilter;
 
-    public ResourcesLoadPanel(
-            List<LoadTimeLine> groups,
-            TimeTracker timeTracker,
-            Component componentOnWhichGiveFeedback,
-            boolean expandResourceLoadViewCharts,
-            PaginationType paginationType) {
+    private Combobox filterByNameCombo;
+
+
+    public ResourcesLoadPanel(List<LoadTimeLine> groups,
+                              TimeTracker timeTracker,
+                              Component componentOnWhichGiveFeedback,
+                              boolean expandResourceLoadViewCharts,
+                              PaginationType paginationType) {
 
         this.componentOnWhichGiveFeedback = componentOnWhichGiveFeedback;
         this.expandResourceLoadViewCharts = expandResourceLoadViewCharts;
@@ -141,10 +149,8 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
         return timeTracker;
     }
 
-    public ListModel getFilters() {
-        String[] filters = new String[] { FILTER_RESOURCES, FILTER_CRITERIA };
-
-        return new SimpleListModel(filters);
+    public ListModel<String> getFilters() {
+        return new SimpleListModel<>(new String[] { FILTER_RESOURCES, FILTER_CRITERIA });
     }
 
     public void setFilter(String filterby) {
@@ -184,19 +190,14 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
     }
 
     private void applyFilter() {
-        zoomListeners.fireEvent(new IListenerNotification<IFilterChangedListener>() {
-            @Override
-            public void doNotify(IFilterChangedListener listener) {
-                listener.filterChanged(getFilter());
-            }
-        });
+        zoomListeners.fireEvent(listener -> listener.filterChanged(getFilter()));
     }
 
     public void addFilterListener(IFilterChangedListener listener) {
         zoomListeners.addListener(listener);
     }
 
-    public ListModel getZoomLevels() {
+    public ListModel<ZoomLevel> getZoomLevels() {
         ZoomLevel[] selectableZoomlevels = {
                 ZoomLevel.DETAIL_ONE,
                 ZoomLevel.DETAIL_TWO,
@@ -204,7 +205,7 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
                 ZoomLevel.DETAIL_FOUR,
                 ZoomLevel.DETAIL_FIVE };
 
-        return new SimpleListModel(selectableZoomlevels);
+        return new SimpleListModel<>(selectableZoomlevels);
     }
 
     public void setZoomLevel(final ZoomLevel zoomLevel) {
@@ -213,6 +214,7 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
         timeTracker.setZoomLevel(zoomLevel);
     }
 
+
     public void zoomIncrease() {
         savePreviousData();
         getTimeTrackerComponent().updateDayScroll();
@@ -265,12 +267,7 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
     private Button asButton(final IToolbarCommand c) {
         Button result = new Button();
 
-        result.addEventListener(Events.ON_CLICK, new EventListener() {
-            @Override
-            public void onEvent(Event event) {
-                c.doAction();
-            }
-        });
+        result.addEventListener(Events.ON_CLICK, event -> c.doAction());
 
         if ( !StringUtils.isEmpty(c.getImage()) ) {
             result.setImage(c.getImage());
@@ -290,13 +287,12 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
     }
 
     private Component getToolbar() {
-        Component toolbar = getFellow("toolbar");
-
-        return toolbar;
+        return getFellow("toolbar");
     }
 
     private MutableTreeModel<LoadTimeLine> createModelForTree() {
         MutableTreeModel<LoadTimeLine> result = MutableTreeModel.create(LoadTimeLine.class);
+
         for (LoadTimeLine loadTimeLine : this.getGroupsToShow()) {
             result.addToRoot(loadTimeLine);
             result = addNodes(result, loadTimeLine);
@@ -322,20 +318,21 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
         return new TimeTrackerComponent(timeTracker) {
             @Override
             protected void scrollHorizontalPercentage(int daysDisplacement) {
-                response("", new AuInvoke(resourceLoadList, "scroll_horizontal", daysDisplacement + ""));
+                response("", new AuInvoke(resourceLoadList, "scroll_horizontal", Integer.toString(daysDisplacement)));
                 moveCurrentPositionScroll();
             }
 
             @Override
             protected void moveCurrentPositionScroll() {
-                // get the previous data.
+                // Get the previous data
                 LocalDate previousStart = getPreviousStart();
 
-                // get the current data
+                // Get the current data
                 int diffDays = getTimeTrackerComponent().getDiffDays(previousStart);
                 double pixelPerDay = getTimeTrackerComponent().getPixelPerDay();
 
-                response("move_scroll", new AuInvoke(resourceLoadList, "move_scroll", "" + diffDays, "" + pixelPerDay));
+                response("move_scroll", new AuInvoke(
+                        resourceLoadList, "move_scroll", Integer.toString(diffDays), Double.toString(pixelPerDay)));
             }
 
             protected void updateCurrentDayScroll() {
@@ -343,7 +340,7 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
 
                 response(
                         "update_day_scroll",
-                        new AuInvoke(resourceLoadList, "update_day_scroll", "" + previousPixelPerDay));
+                        new AuInvoke(resourceLoadList, "update_day_scroll", Double.toString(previousPixelPerDay)));
 
             }
         };
@@ -356,8 +353,10 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
         getFellow("insertionPointLeftPanel").appendChild(leftPane);
         leftPane.afterCompose();
 
-        getFellow("insertionPointRightPanel").appendChild(timeTrackerComponent);
-        getFellow("insertionPointRightPanel").appendChild(resourceLoadList);
+        Div insertionPointRightPanel = (Div) getFellow("insertionPointRightPanel");
+        insertionPointRightPanel.appendChild(timeTrackerComponent);
+        insertionPointRightPanel.appendChild(resourceLoadList);
+
         TimeTrackerComponent timeTrackerHeader = createTimeTrackerHeader();
         getFellow("insertionPointTimetracker").appendChild(timeTrackerHeader);
 
@@ -374,21 +373,30 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
 
         timeTrackerHeader.afterCompose();
         timeTrackerComponent.afterCompose();
-        listZoomLevels = (Listbox) getFellow("listZoomLevels");
+        Listbox listZoomLevels = (Listbox) getFellow("listZoomLevels");
         listZoomLevels.setSelectedIndex(timeTracker.getDetailLevel().ordinal());
 
+        filterByNameCombo = (Combobox) getFellow(FILTER_BY_NAME_COMBO_COMPONENT);
+        filterByNameCombo.setWidth("85px");
+
         if ( paginationType == PaginationType.INTERNAL_PAGINATION && refreshNameFilter ) {
             setupNameFilter();
         }
         else if ( paginationType == PaginationType.NONE ) {
-            getFellow("filterByNameCombo").setVisible(false);
+            getFellow(FILTER_BY_NAME_COMBO_COMPONENT).setVisible(false);
             getFellow("filterByNameLabel").setVisible(false);
         }
 
         getFellow("insertionPointChart").appendChild(loadChart);
 
+        this.visibleChart = expandResourceLoadViewCharts;
         this.visibleChart = expandResourceLoadViewCharts;
         ((South) getFellow("graphics")).setOpen(this.visibleChart);
+
+        if (!visibleChart) {
+            ((South) getFellow("graphics")).setTitle(_("Graphics are disabled"));
+        }
+
         savePreviousData();
     }
 
@@ -417,18 +425,14 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
 
     private TimeTrackerComponent createTimeTrackerHeader() {
         return new TimeTrackerComponent(timeTracker) {
-
-         @Override
-         protected void scrollHorizontalPercentage(int pixelsDisplacement) {
-         }
+            @Override
+            protected void scrollHorizontalPercentage(int pixelsDisplacement) {}
 
             @Override
-            protected void moveCurrentPositionScroll() {
-            }
+            protected void moveCurrentPositionScroll() {}
 
             @Override
-            protected void updateCurrentDayScroll() {
-            }
+            protected void updateCurrentDayScroll() {}
         };
     }
 
@@ -438,7 +442,6 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
     }
 
     private void setupNameFilter() {
-        Combobox filterByNameCombo = (Combobox) getFellow("filterByNameCombo");
         filterByNameCombo.getChildren().clear();
         int size = groups.size();
 
@@ -469,7 +472,7 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
         Comboitem lastItem = new Comboitem();
         lastItem.setLabel(_("All"));
         lastItem.setDescription(_("Show all elements"));
-        lastItem.setValue(new Integer(-1));
+        lastItem.setValue(-1);
         filterByNameCombo.appendChild(lastItem);
 
         filterByNameCombo.setSelectedIndex(0);
@@ -477,26 +480,28 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
     }
 
     /**
-     * Returns only the LoadTimeLine objects that have to be show
-     * according to the name filter.
-     * @return
+     * @return only the LoadTimeLine objects that have to be show according to the name filter.
      */
     private List<LoadTimeLine> getGroupsToShow() {
         if ( paginationType != PaginationType.INTERNAL_PAGINATION || filterByNamePosition == -1 ) {
             return groups;
         }
 
-        boolean condition = (filterByNamePosition + numberOfGroupsByName < groups.size());
+        boolean condition = filterByNamePosition + numberOfGroupsByName < groups.size();
         int endPosition = condition ? filterByNamePosition + numberOfGroupsByName : groups.size();
 
         return groups.subList(filterByNamePosition, endPosition);
     }
 
+    /**
+     * Should be public!
+     * Used in resourcesLoadLayout.zul
+     */
     public void onSelectFilterByName(Combobox comboByName) {
-        if ( comboByName.getSelectedItemApi() == null ) {
+        if ( comboByName.getSelectedItem() == null ) {
             resetComboByName(comboByName);
         } else {
-            Integer filterByNamePosition = (Integer) comboByName.getSelectedItemApi().getValue();
+            Integer filterByNamePosition = comboByName.getSelectedItem().getValue();
 
             if ( paginationType != PaginationType.NONE ) {
                 this.filterByNamePosition = filterByNamePosition;
@@ -523,7 +528,7 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
             public void doAction() {
                 if ( paginationType == PaginationType.INTERNAL_PAGINATION ) {
 
-                    //if the pagination is internal, we are in charge of repainting the graph
+                    // If the pagination is internal, we are in charge of repainting the graph
                     treeModel = createModelForTree();
 
                     timeTrackerComponent = timeTrackerForResourcesLoadPanel(timeTracker);
@@ -531,12 +536,7 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
                     leftPane = new ResourceLoadLeftPane(treeModel, resourceLoadList);
                 }
 
-                nameFilterListener.fireEvent(new IListenerNotification<IPaginationFilterChangedListener>() {
-                    @Override
-                    public void doNotify(IPaginationFilterChangedListener listener) {
-                        listener.filterChanged(filterByNamePosition);
-                    }
-                });
+                nameFilterListener.fireEvent(listener -> listener.filterChanged(filterByNamePosition));
 
                 afterCompose();
             }
@@ -549,9 +549,9 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
     }
 
     public void setInternalPaginationDisabled(boolean disabled) {
-        Combobox combo = ((Combobox) getFellow("filterByNameCombo"));
+        Combobox combo = (Combobox) getFellow(FILTER_BY_NAME_COMBO_COMPONENT);
         if ( combo != null && combo.isDisabled() != disabled ) {
-            filterByNamePosition = disabled? -1 : (Integer) combo.getSelectedItemApi().getValue();
+            filterByNamePosition = disabled? -1 : (Integer) combo.getSelectedItem().getValue();
             combo.setDisabled(disabled);
         }
     }
@@ -560,15 +560,12 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
         nameFilterListener.addListener(iFilterChangedListener);
     }
 
+    /**
+     * It should be public!
+     */
     public void changeChartVisibility(boolean visible) {
         visibleChart = visible;
-
-        chartVisibilityListeners.fireEvent(new IListenerNotification<IChartVisibilityChangedListener>() {
-            @Override
-            public void doNotify(IChartVisibilityChangedListener listener) {
-                listener.chartVisibilityChanged(visibleChart);
-            }
-        });
+        chartVisibilityListeners.fireEvent(listener -> listener.chartVisibilityChanged(visibleChart));
     }
 
     public boolean isVisibleChart() {
@@ -588,11 +585,9 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
     }
 
     public Combobox getPaginationFilterCombobox() {
-        if ( paginationType == PaginationType.EXTERNAL_PAGINATION ) {
-            return (Combobox) getFellow("filterByNameCombo");
-        }
-
-        return null;
+        return paginationType == PaginationType.EXTERNAL_PAGINATION
+                ? (Combobox) getFellow(FILTER_BY_NAME_COMBO_COMPONENT)
+                : null;
     }
 
     public enum PaginationType {
@@ -600,14 +595,16 @@ public class ResourcesLoadPanel extends HtmlMacroComponent {
          * Sets the widget to take care of the pagination of all the LoadTimeLine objects received.
          */
         INTERNAL_PAGINATION,
+
         /**
          * The widget will only show the combo box but its content has to be configured externally.
-         * The pagination has to be managed externally too: the widget will show all the LoadTimeLine
-         * objects received.
+         * The pagination has to be managed externally too: the widget will show all the LoadTimeLine objects received.
          */
         EXTERNAL_PAGINATION,
+
         /**
-         * Disables pagination. Shows all the LoadTimeLine objects received.
+         * Disables pagination.
+         * Shows all the LoadTimeLine objects received.
          */
         NONE
     }

ganttzk/src/main/java/org/zkoss/ganttz/servlets/CallbackServlet.java

@@ -34,11 +34,12 @@ import java.util.concurrent.TimeUnit;
 
 import javax.servlet.ServletConfig;
 import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import org.apache.commons.lang3.Validate;
-import org.zkoss.web.servlet.http.HttpServlet;
+
 
 /**
  * Servlet that allows to register custom responses. It must be declared at

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/IConvertibleToColumn.java

@@ -21,7 +21,7 @@
 
 package org.zkoss.ganttz.timetracker;
 
-import org.zkoss.zul.api.Column;
+import org.zkoss.zul.Column;
 
 public interface IConvertibleToColumn {
 

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/OnColumnsRowRenderer.java

@@ -34,15 +34,20 @@ import org.zkoss.zul.RowRenderer;
 
 public class OnColumnsRowRenderer<C, T> implements RowRenderer {
 
+    private final List<C> columns;
+
+    private final ICellForDetailItemRenderer<C, T> cellRenderer;
+
+    private Class<T> type;
+
     public static <C, T> OnColumnsRowRenderer<C, T> create(ICellForDetailItemRenderer<C, T> cellRenderer,
                                                            Collection<C> columns) {
 
         return create(inferGenericType(cellRenderer), cellRenderer, columns);
     }
 
-    public static <C, T> OnColumnsRowRenderer<C, T> create(Class<T> type,
-                                                           ICellForDetailItemRenderer<C, T> cellRenderer,
-                                                           Collection<C> columns) {
+    public static <C, T> OnColumnsRowRenderer<C, T> create(
+            Class<T> type, ICellForDetailItemRenderer<C, T> cellRenderer, Collection<C> columns) {
 
         return new OnColumnsRowRenderer<>(type, cellRenderer, columns);
     }
@@ -95,19 +100,12 @@ public class OnColumnsRowRenderer<C, T> implements RowRenderer {
 
     private static void informCannotBeInferred(ICellForDetailItemRenderer<?, ?> renderer) {
         throw new IllegalArgumentException(
-                "the generic type cannot be inferred " +
-                "if actual type parameters are not declared " +
-                "or implements the raw interface: " +
-                renderer.getClass().getName());
+                "the generic type cannot be inferred if actual type parameters are not declared " +
+                        "or implements the raw interface: " + renderer.getClass().getName());
     }
 
-    private final List<C> columns;
-    private final ICellForDetailItemRenderer<C, T> cellRenderer;
-    private Class<T> type;
+    private OnColumnsRowRenderer(Class<T> type, ICellForDetailItemRenderer<C, T> cellRenderer, Collection<C> columns) {
 
-    private OnColumnsRowRenderer(Class<T> type,
-                                 ICellForDetailItemRenderer<C, T> cellRenderer,
-                                 Collection<C> columns) {
         Validate.notNull(type);
         Validate.notNull(columns);
         Validate.notNull(cellRenderer);
@@ -119,15 +117,16 @@ public class OnColumnsRowRenderer<C, T> implements RowRenderer {
     }
 
     @Override
-    public void render(Row row, Object data) {
-        if ( !type.isInstance(data) ) {
-            throw new IllegalArgumentException(data + " is not instance of " + type);
+    public void render(Row row, Object o, int index) throws Exception {
+        if ( !type.isInstance(o) ) {
+            throw new IllegalArgumentException(o + " is not instance of " + type);
         }
 
         for (C item : columns) {
-            Component child = cellRenderer.cellFor(item, type.cast(data));
+            Component child = cellRenderer.cellFor(item, type.cast(o));
             child.setParent(row);
         }
     }
 
+
 }

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/TimeTrackedTable.java

@@ -41,8 +41,9 @@ public class TimeTrackedTable<T> extends HtmlMacroComponent {
     private transient IZoomLevelChangedListener zoomListener;
 
     public TimeTrackedTable(Callable<List<T>> dataSource,
-            ICellForDetailItemRenderer<DetailItem, T> cellRenderer,
-            TimeTracker timeTracker) {
+                            ICellForDetailItemRenderer<DetailItem, T> cellRenderer,
+                            TimeTracker timeTracker) {
+
         this.data = dataSource;
         this.cellRenderer = cellRenderer;
         this.timeTracker = timeTracker;
@@ -56,8 +57,8 @@ public class TimeTrackedTable<T> extends HtmlMacroComponent {
         this.timeTracker.addZoomListener(zoomListener);
     }
 
-    public ListModel getTableModel() {
-        return new ListModelList(getData());
+    public ListModel<T> getTableModel() {
+        return new ListModelList<>(getData());
     }
 
     private List<T> getData() {
@@ -69,8 +70,7 @@ public class TimeTrackedTable<T> extends HtmlMacroComponent {
     }
 
     public RowRenderer getRowRenderer() {
-        return OnColumnsRowRenderer.create(cellRenderer, timeTracker
-                .getDetailsSecondLevel());
+        return OnColumnsRowRenderer.create(cellRenderer, timeTracker.getDetailsSecondLevel());
     }
 
     public Collection<DetailItem> getDetailsSecondLevel() {

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/TimeTrackedTableWithLeftPane.java

@@ -33,7 +33,7 @@ import org.zkoss.zul.Columns;
 import org.zkoss.zul.Grid;
 import org.zkoss.zul.ListModel;
 import org.zkoss.zul.ListModelList;
-import org.zkoss.zul.api.Column;
+import org.zkoss.zul.Column;
 
 public class TimeTrackedTableWithLeftPane<A, B> {
 
@@ -48,10 +48,13 @@ public class TimeTrackedTableWithLeftPane<A, B> {
             ICellForDetailItemRenderer<C, A> leftPaneCellRenderer,
             ICellForDetailItemRenderer<DetailItem, B> cellRendererForTimeTracker,
             TimeTracker timeTracker) {
+
         this.dataSource = dataSource;
-        timeTrackedTable = new TimeTrackedTable<B>(
+
+        timeTrackedTable = new TimeTrackedTable<>(
                 dataForTimeTracker(dataSource), cellRendererForTimeTracker,
                 timeTracker);
+
         timeTrackedTable.setSclass("inner-timetracked-table");
         leftPane = new Grid();
         zoomLevelListener = new IZoomLevelChangedListener() {
@@ -60,28 +63,32 @@ public class TimeTrackedTableWithLeftPane<A, B> {
                 loadModelForLeftPane();
             }
         };
+
         timeTracker.addZoomListener(zoomLevelListener);
+
         leftPane.appendChild(createColumns(leftPaneColumns));
-        leftPane.setRowRenderer(OnColumnsRowRenderer.create(
-                leftPaneCellRenderer, leftPaneColumns));
+        leftPane.setRowRenderer(OnColumnsRowRenderer.create(leftPaneCellRenderer, leftPaneColumns));
+
         loadModelForLeftPane();
     }
 
-    private static Columns createColumns(
-            Collection<? extends IConvertibleToColumn> convertibleToColumns) {
+    private static Columns createColumns(Collection<? extends IConvertibleToColumn> convertibleToColumns) {
         Columns result = new Columns();
+
         for (Column column : toColumns(convertibleToColumns)) {
             result.appendChild(column);
         }
+
         return result;
     }
 
-    private static List<Column> toColumns(
-            Collection<? extends IConvertibleToColumn> convertibleToColumns) {
-        List<Column> columns = new ArrayList<Column>();
+    private static List<Column> toColumns(Collection<? extends IConvertibleToColumn> convertibleToColumns) {
+        List<Column> columns = new ArrayList<>();
+
         for (IConvertibleToColumn c : convertibleToColumns) {
             columns.add(c.toColumn());
         }
+
         return columns;
     }
 
@@ -89,12 +96,13 @@ public class TimeTrackedTableWithLeftPane<A, B> {
         leftPane.setModel(createModelForLeftPane());
     }
 
-    private ListModel createModelForLeftPane() {
-        return new ListModelList(retrieveLeftPaneList());
+    private ListModel<A> createModelForLeftPane() {
+        return new ListModelList<>(retrieveLeftPaneList());
     }
 
     private List<A> retrieveLeftPaneList() {
         PairOfLists<A, B> pair = loadPairOfListsFromCallable();
+
         return pair.getFirst();
     }
 
@@ -106,8 +114,7 @@ public class TimeTrackedTableWithLeftPane<A, B> {
         }
     }
 
-    private Callable<List<B>> dataForTimeTracker(
-            final Callable<PairOfLists<A, B>> dataSource) {
+    private Callable<List<B>> dataForTimeTracker(final Callable<PairOfLists<A, B>> dataSource) {
         return new Callable<List<B>>() {
 
             @Override
@@ -120,10 +127,11 @@ public class TimeTrackedTableWithLeftPane<A, B> {
     private boolean afterComposeCalled = false;
 
     public TimeTrackedTable<B> getTimeTrackedTable() {
-        if (!afterComposeCalled) {
+        if ( !afterComposeCalled ) {
             timeTrackedTable.afterCompose();
             afterComposeCalled = true;
         }
+
         return timeTrackedTable;
     }
 

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/TimeTracker.java

@@ -23,8 +23,6 @@ package org.zkoss.ganttz.timetracker;
 
 import static org.zkoss.ganttz.i18n.I18nHelper._;
 
-import java.beans.PropertyChangeEvent;
-import java.beans.PropertyChangeListener;
 import java.util.Collection;
 import java.util.Date;
 
@@ -43,7 +41,6 @@ import org.zkoss.ganttz.util.Interval;
 import org.zkoss.ganttz.util.LongOperationFeedback;
 import org.zkoss.ganttz.util.WeakReferencedListeners;
 import org.zkoss.ganttz.util.LongOperationFeedback.ILongOperation;
-import org.zkoss.ganttz.util.WeakReferencedListeners.IListenerNotification;
 import org.zkoss.zk.ui.Component;
 
 public class TimeTracker {
@@ -82,9 +79,7 @@ public class TimeTracker {
 
     private IDetailItemFilter filter = null;
 
-    public IDetailItemFilter getFilter() {
-        return filter;
-    }
+    private Interval realIntervalCached;
 
     public TimeTracker(Interval interval, ZoomLevel zoomLevel, Component parent) {
         this(interval, zoomLevel, SeveralModificators.empty(), SeveralModificators.empty(), parent);
@@ -122,6 +117,10 @@ public class TimeTracker {
         detailLevel = zoomLevel;
     }
 
+    public IDetailItemFilter getFilter() {
+        return filter;
+    }
+
     public void setFilter(IDetailItemFilter filter) {
         this.filter = filter;
         datesMapper = null;
@@ -144,11 +143,7 @@ public class TimeTracker {
     }
 
     private Collection<DetailItem> filterFirstLevel(Collection<DetailItem> firstLevelDetails) {
-        if ( filter == null ) {
-            return firstLevelDetails;
-        }
-
-        return filter.selectsFirstLevel(firstLevelDetails);
+        return filter == null ? firstLevelDetails : filter.selectsFirstLevel(firstLevelDetails);
     }
 
     public Collection<DetailItem> getDetailsSecondLevel() {
@@ -160,15 +155,9 @@ public class TimeTracker {
     }
 
     private Collection<DetailItem> filterSecondLevel(Collection<DetailItem> secondLevelDetails) {
-        if ( filter == null ) {
-            return secondLevelDetails;
-        }
-
-        return filter.selectsSecondLevel(secondLevelDetails);
+        return filter == null ? secondLevelDetails : filter.selectsSecondLevel(secondLevelDetails);
     }
 
-    private Interval realIntervalCached;
-
     public Interval getRealInterval() {
         if ( realIntervalCached == null ) {
             realIntervalCached = getTimeTrackerState().getRealIntervalFor(interval);
@@ -182,7 +171,8 @@ public class TimeTracker {
     }
 
     private void fireZoomChanged() {
-        zoomListeners.fireEvent(new IListenerNotification<IZoomLevelChangedListener>() {
+        /* Do not replace it with lambda */
+        zoomListeners.fireEvent(new WeakReferencedListeners.IListenerNotification<IZoomLevelChangedListener>() {
             @Override
             public void doNotify(IZoomLevelChangedListener listener) {
                 listener.zoomLevelChanged(detailLevel);
@@ -257,13 +247,7 @@ public class TimeTracker {
     }
 
     public void trackPosition(final Task task) {
-        task.addFundamentalPropertiesChangeListener(new PropertyChangeListener() {
-            @Override
-            public void propertyChange(PropertyChangeEvent evt) {
-                updateIntervalIfNeeded(task);
-            }
-        });
-
+        task.addFundamentalPropertiesChangeListener(evt -> updateIntervalIfNeeded(task));
         updateIntervalIfNeeded(task);
     }
 
@@ -319,16 +303,14 @@ public class TimeTracker {
     }
 
     private LocalDate endPlusOneMonth(Task task) {
-        Date taskEnd = max(task.getEndDate().toDayRoundedDate(), task.getDeadline());
-
-        return new LocalDate(taskEnd).plusMonths(1);
+        return new LocalDate(max(task.getEndDate().toDayRoundedDate(), task.getDeadline())).plusMonths(1);
     }
 
     private LocalDate startMinusTwoWeeks(Task task) {
-        // the deadline could be before the start
+        // The deadline could be before the start
         Date start = min(task.getBeginDate().toDayRoundedDate(), task.getDeadline());
 
-        // the last consolidated value could be before the start
+        // The last consolidated value could be before the start
         if ( task.getConsolidatedline() != null ) {
             start = min(start, task.getConsolidatedline().toDayRoundedDate());
         }

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/TimeTrackerComponent.java

@@ -25,7 +25,6 @@ import java.util.Collection;
 
 import org.joda.time.Days;
 import org.joda.time.LocalDate;
-import org.zkoss.ganttz.IDatesMapper;
 import org.zkoss.ganttz.timetracker.zoom.DetailItem;
 import org.zkoss.ganttz.timetracker.zoom.IZoomLevelChangedListener;
 import org.zkoss.ganttz.timetracker.zoom.TimeTrackerState;
@@ -35,36 +34,35 @@ import org.zkoss.zk.ui.Executions;
 import org.zkoss.zk.ui.HtmlMacroComponent;
 
 /**
+ * Works with time header of some pages.
+ *
  * @author Javier Moran Rua <jmoran@igalia.com>
  */
 public abstract class TimeTrackerComponent extends HtmlMacroComponent {
 
     private final TimeTracker timeTracker;
-    private IZoomLevelChangedListener zoomListener;
+
     private final String secondLevelZul;
+
     private String timeTrackerElementId;
+
     private int scrollLeft;
 
     public TimeTrackerComponent(TimeTracker timeTracker) {
-        this(timeTracker,
-                "~./ganttz/zul/timetracker/timetrackersecondlevel.zul",
-                "timetracker");
+        this(timeTracker, "~./ganttz/zul/timetracker/timetrackersecondlevel.zul", "timetracker");
     }
 
-    protected TimeTrackerComponent(TimeTracker timeTracker,
-            String secondLevelZul, String timetrackerId) {
+    TimeTrackerComponent(TimeTracker timeTracker, String secondLevelZul, String timetrackerId) {
         this.secondLevelZul = secondLevelZul;
         this.timeTracker = timeTracker;
-        zoomListener = new IZoomLevelChangedListener() {
 
-            @Override
-            public void zoomLevelChanged(ZoomLevel detailLevel) {
-                if (isInPage()) {
-                    recreate();
-                    changeDetailLevel(getDaysFor(scrollLeft));
-                }
+        IZoomLevelChangedListener zoomListener = detailLevel ->  {
+            if ( isInPage() ) {
+                recreate();
+                changeDetailLevel(getDaysFor(scrollLeft));
             }
         };
+
         this.timeTracker.addZoomListener(zoomListener);
         timeTrackerElementId = timetrackerId;
     }
@@ -81,22 +79,24 @@ public abstract class TimeTrackerComponent extends HtmlMacroComponent {
         return timeTrackerElementId;
     }
 
-    /*
-     *  fsanjurjo: I'm temporary changing the name of this method
-     *  (from afterCompose to compose) to get it called after calling recreate().
-     *  To understand why, please read this: http://www.zkoss.org/forum/listComment/14905
-     *  Also renamed the call to its parent.
-     * */
+    /**
+     * fsanjurjo:
+     * I'm temporary changing the name of this method (from afterCompose to compose)
+     * to get it called after calling recreate().
+     *
+     * To understand why, please read this: http://www.zkoss.org/forum/listComment/14905
+     * Also renamed the call to its parent.
+     */
     @Override
     public void compose() {
         super.compose();
+
         Component fellow = getFellow("firstleveldetails");
         addSecondLevels(fellow.getParent());
     }
 
     private void addSecondLevels(Component parent) {
-        Executions.getCurrent().createComponents(secondLevelZul, parent,
-                getAttributes());
+        Executions.getCurrent().createComponents(secondLevelZul, parent, getAttributes());
     }
 
     public ZoomLevel getZoomLevel() {
@@ -146,9 +146,9 @@ public abstract class TimeTrackerComponent extends HtmlMacroComponent {
     }
 
     public int getDiffDays(LocalDate previousStart) {
-        // get the current data
-        IDatesMapper mapper = getTimeTracker().getMapper();
+        // Get the current data
         LocalDate start = getTimeTracker().getRealInterval().getStart();
+
         return Days.daysBetween(start, previousStart).getDays();
     }
 
@@ -166,7 +166,7 @@ public abstract class TimeTrackerComponent extends HtmlMacroComponent {
     }
 
     public String getWidgetClass(){
-        return getDefinition().getDefaultWidgetClass();
+        return getDefinition().getDefaultWidgetClass(this);
     }
 
 }

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/TimeTrackerComponentWithoutColumns.java

@@ -21,16 +21,14 @@
 package org.zkoss.ganttz.timetracker;
 
 /**
- * A {@link TimeTrackerComponent} that doesn't show columns as watermark
+ * A {@link TimeTrackerComponent} that doesn't show columns as watermark.
+ *
  * @author Óscar González Fernández <ogonzalez@igalia.com>
  */
 public class TimeTrackerComponentWithoutColumns extends TimeTrackerComponent {
 
-    public TimeTrackerComponentWithoutColumns(TimeTracker timeTracker,
-            String timeTrackerId) {
-        super(timeTracker,
-                "~./ganttz/zul/timetracker/secondlevelwithoutwatermark.zul",
-                timeTrackerId);
+    public TimeTrackerComponentWithoutColumns(TimeTracker timeTracker, String timeTrackerId) {
+        super(timeTracker, "~./ganttz/zul/timetracker/secondlevelwithoutwatermark.zul", timeTrackerId);
     }
 
     @Override
@@ -38,14 +36,8 @@ public class TimeTrackerComponentWithoutColumns extends TimeTrackerComponent {
     }
 
     @Override
-    protected void moveCurrentPositionScroll() {
-        // TODO Auto-generated method stub
-
-    }
+    protected void moveCurrentPositionScroll() {}
 
     @Override
-    protected void updateCurrentDayScroll() {
-        // TODO Auto-generated method stub
-
-    }
+    protected void updateCurrentDayScroll() {}
 }

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailFiveTimeTrackerState.java

@@ -21,57 +21,51 @@
 
 package org.zkoss.ganttz.timetracker.zoom;
 
-import org.joda.time.DateTime;
 import org.joda.time.Days;
 import org.joda.time.LocalDate;
 import org.joda.time.ReadablePeriod;
 
 /**
- * Zoom level for weeks in the first level and days in the second level
+ * Zoom level for weeks in the first level and days in the second level.
+ *
  * @author Óscar González Fernández <ogonzalez@igalia.com>
  * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
  */
-public class DetailFiveTimeTrackerState extends
-        TimeTrackerStateWithSubintervalsFitting {
+public class DetailFiveTimeTrackerState extends TimeTrackerStateWithSubintervalsFitting {
 
     private static final int NUMBER_OF_DAYS_MINIMUM = 50;
-    public static final int FIRST_LEVEL_SIZE = 210;
-    public static final int SECOND_LEVEL_SIZE = 30;
 
-    DetailFiveTimeTrackerState(IDetailItemModificator firstLevelModificator,
-            IDetailItemModificator secondLevelModificator) {
+    private static final int FIRST_LEVEL_SIZE = 210;
+
+    private static final int SECOND_LEVEL_SIZE = 30;
+
+    DetailFiveTimeTrackerState(
+            IDetailItemModificator firstLevelModificator, IDetailItemModificator secondLevelModificator) {
+
         super(firstLevelModificator, secondLevelModificator);
     }
 
+    @Override
     public final double daysPerPixel() {
-        return ((double) 1 / SECOND_LEVEL_SIZE);
+        return (double) 1 / SECOND_LEVEL_SIZE;
     }
 
     @Override
     protected IDetailItemCreator getDetailItemCreatorFirstLevel() {
-        return new IDetailItemCreator() {
-
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                return new DetailItem(FIRST_LEVEL_SIZE, dateTime
-                        .getWeekOfWeekyear()
-                        + dateTime.toString(", MMM YYYY"), dateTime, dateTime
-                        .plusDays(7));
-            }
-        };
+        return dateTime -> new DetailItem(
+                FIRST_LEVEL_SIZE,
+                dateTime.getWeekOfWeekyear() + dateTime.toString(", MMM YYYY"),
+                dateTime,
+                dateTime.plusDays(7));
     }
 
     @Override
     protected IDetailItemCreator getDetailItemCreatorSecondLevel() {
-        return new IDetailItemCreator() {
-
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                return new DetailItem(SECOND_LEVEL_SIZE, dateTime
-                        .getDayOfMonth()
-                        + "", dateTime, dateTime.plusDays(1));
-            }
-        };
+        return dateTime -> new DetailItem(
+                SECOND_LEVEL_SIZE,
+                Integer.toString(dateTime.getDayOfMonth()),
+                dateTime,
+                dateTime.plusDays(1));
     }
 
     @Override
@@ -87,11 +81,12 @@ public class DetailFiveTimeTrackerState extends
     @Override
     protected LocalDate round(LocalDate date, boolean down) {
         int dayOfWeek = date.getDayOfWeek();
+
         if (dayOfWeek == 1) {
             return date;
         }
-        return down ? date.withDayOfWeek(1) : date.withDayOfWeek(1)
-                .plusWeeks(1);
+
+        return down ? date.withDayOfWeek(1) : date.withDayOfWeek(1).plusWeeks(1);
     }
 
     @Override

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailFourTimeTrackerState.java

@@ -31,7 +31,8 @@ import org.joda.time.LocalDate;
 import org.joda.time.Months;
 
 /**
- * Zoom level for months and years and weeks in the second level
+ * Zoom level for months and years and weeks in the second level.
+ *
  * @author Óscar González Fernández <ogonzalez@igalia.com>
  * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
  */
@@ -39,53 +40,39 @@ public class DetailFourTimeTrackerState extends TimeTrackerState {
 
     private static final int NUMBER_OF_WEEKS_MINIMUM = 40;
 
-    DetailFourTimeTrackerState(IDetailItemModificator firstLevelModificator,
-            IDetailItemModificator secondLevelModificator) {
+    private static final int SECOND_LEVEL_SIZE = 56;
+
+    DetailFourTimeTrackerState(
+            IDetailItemModificator firstLevelModificator, IDetailItemModificator secondLevelModificator) {
+
         super(firstLevelModificator, secondLevelModificator);
     }
 
-    private static final int SECOND_LEVEL_SIZE = 56;
-
     public final double pixelPerDay() {
-        return (SECOND_LEVEL_SIZE / (double) 7);
+        return SECOND_LEVEL_SIZE / (double) 7;
     }
 
     public final double daysPerPixel() {
-        return ((double) 7 / SECOND_LEVEL_SIZE);
+        return (double) 7 / SECOND_LEVEL_SIZE;
     }
 
-
-    private IDetailItemCreator firstLevelCreator;
-
     @Override
     protected IDetailItemCreator getDetailItemCreatorFirstLevel() {
-        firstLevelCreator = new IDetailItemCreator() {
-
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                return new DetailItem(getSizeMonth(dateTime), dateTime
-                        .toString("MMMM,YYYY"), dateTime, dateTime
-                        .plusMonths(1));
-            }
-        };
-        return firstLevelCreator;
+        return dateTime -> new DetailItem(
+                getSizeMonth(dateTime), dateTime.toString("MMMM,YYYY"), dateTime, dateTime.plusMonths(1));
     }
 
     @Override
     protected IDetailItemCreator getDetailItemCreatorSecondLevel() {
-        return new IDetailItemCreator() {
+        return dateTime ->  {
+            int daysUntilFirstDayNextWeek = getDaysUntilFirstDayNextWeek(dateTime.toLocalDate());
+            int sizeWeek = BigDecimal.valueOf(pixelPerDay() * daysUntilFirstDayNextWeek).intValue();
 
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                int daysUntilFirstDayNextWeek = getDaysUntilFirstDayNextWeek(dateTime
-                        .toLocalDate());
-                int sizeWeek = new BigDecimal(pixelPerDay()
-                        * daysUntilFirstDayNextWeek).intValue();
-
-                return new DetailItem(sizeWeek, dateTime.getWeekOfWeekyear()
-                        + "", dateTime,
-                        dateTime.plusDays(daysUntilFirstDayNextWeek));
-            }
+            return new DetailItem(
+                    sizeWeek,
+                    Integer.toString(dateTime.getWeekOfWeekyear()),
+                    dateTime,
+                    dateTime.plusDays(daysUntilFirstDayNextWeek));
         };
     }
 
@@ -94,8 +81,8 @@ public class DetailFourTimeTrackerState extends TimeTrackerState {
         if (date.getDayOfMonth() == 1) {
             return date;
         }
-        return down ? date.withDayOfMonth(1) : date.plusMonths(1)
-                .withDayOfMonth(1);
+
+        return down ? date.withDayOfMonth(1) : date.plusMonths(1).withDayOfMonth(1);
     }
 
     @Override
@@ -114,17 +101,18 @@ public class DetailFourTimeTrackerState extends TimeTrackerState {
     }
 
     private int getSizeMonth(DateTime dateTime) {
-        Calendar cal = new GregorianCalendar(dateTime.getYear(), dateTime
-                .getMonthOfYear() - 1, dateTime.getDayOfMonth());
+        Calendar cal =
+                new GregorianCalendar(dateTime.getYear(), dateTime.getMonthOfYear() - 1, dateTime.getDayOfMonth());
+
         // Get the number of days in that month
         int days = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
-        return new BigDecimal(pixelPerDay() * days).intValue();
+
+        return BigDecimal.valueOf(pixelPerDay() * days).intValue();
     }
 
     @Override
     protected Iterator<LocalDate> getPeriodsFirstLevelGenerator(LocalDate start) {
         return new LazyGenerator<LocalDate>(start) {
-
             @Override
             protected LocalDate next(LocalDate last) {
                 return last.plus(Months.ONE);
@@ -135,14 +123,9 @@ public class DetailFourTimeTrackerState extends TimeTrackerState {
     @Override
     protected Iterator<LocalDate> getPeriodsSecondLevelGenerator(LocalDate start) {
         return new LazyGenerator<LocalDate>(start) {
-
             @Override
             protected LocalDate next(LocalDate last) {
-                if (last.getDayOfWeek() != 1) {
-                    return last.plusDays(getDaysUntilFirstDayNextWeek(last));
-                } else {
-                    return last.plusWeeks(1);
-                }
+                return last.getDayOfWeek() != 1 ? last.plusDays(getDaysUntilFirstDayNextWeek(last)) : last.plusWeeks(1);
             }
         };
     }

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailItem.java

@@ -25,42 +25,40 @@ import org.joda.time.DateTime;
 import org.joda.time.Days;
 
 /**
- * One of each of the subintervals a time line is divided into
+ * One of each of the subintervals a time line is divided into.
+ *
  * @author Francisco Javier Moran Rúa <jmoran@igalia.com>
  * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
  */
 public final class DetailItem {
 
     private int size;
+
     private String name;
 
     private boolean even;
+
     private boolean bankHoliday;
 
     private String bankHolidayWeek;
 
-    public String getBankHolidayWeek() {
-        return bankHolidayWeek;
-    }
-
-    public void setBankHolidayWeek(String bankHolidayWeek) {
-        this.bankHolidayWeek = bankHolidayWeek;
-    }
-
     private boolean currentPeriod;
+
     private int currentDayOffset;
 
     private boolean projectStart = false;
+
     private int projectStartOffset = 0;
 
     private boolean deadlinePeriod;
+
     private int deadlineOffset;
 
     private DateTime startDate;
+
     private DateTime endDate;
 
-    public DetailItem(int size, String name, DateTime startDate,
-            DateTime endDate) {
+    public DetailItem(int size, String name, DateTime startDate, DateTime endDate) {
         this(size, name, false);
         this.startDate = startDate;
         this.endDate = endDate;
@@ -88,32 +86,41 @@ public final class DetailItem {
         this.currentDayOffset = currentdayoffset;
     }
 
-    public DetailItem(int size, String name, int currentdayoffset,
-            int deadlineoffset) {
+    public DetailItem(int size, String name, int currentdayoffset, int deadlineoffset) {
         this(size, name, currentdayoffset);
         this.deadlinePeriod = true;
         this.deadlineOffset = deadlineoffset;
     }
 
+    public String getBankHolidayWeek() {
+        return bankHolidayWeek;
+    }
+
+    public void setBankHolidayWeek(String bankHolidayWeek) {
+        this.bankHolidayWeek = bankHolidayWeek;
+    }
+
     public void markCurrentDay() {
         if (this.startDate.isBeforeNow() && this.endDate.isAfterNow()) {
-            int offsetInPx = Math
-                    .round(((((float) Days.daysBetween(this.startDate,
-                            new DateTime()).getDays()) + (float) 0.5) / ((float) Days
-                    .daysBetween(this.startDate, this.endDate).getDays()))
-                    * this.size);
+
+            int offsetInPx = Math.round(
+                    ( (((float) Days.daysBetween(this.startDate, new DateTime()).getDays()) + (float) 0.5) /
+                            ((float) Days.daysBetween(this.startDate, this.endDate).getDays()) )
+                            * this.size );
+
             // 1px per column side, 1px for right border and 1px own bg-width
             this.markCurrentDay(Math.min(this.size - 4, offsetInPx));
         }
     }
 
     public void markProjectStart(DateTime projectStart) {
-        if (!this.startDate.isAfter(projectStart)
-                && projectStart.isBefore(endDate)) {
-            int offsetInPx = Math.round((((float) Days.daysBetween(
-                    this.startDate, projectStart).getDays()) / ((float) Days
-                    .daysBetween(this.startDate, this.endDate).getDays()))
-                    * this.size);
+        if (!this.startDate.isAfter(projectStart) && projectStart.isBefore(endDate)) {
+
+            int offsetInPx = Math.round(
+                    ( ((float) Days.daysBetween(this.startDate, projectStart).getDays()) /
+                            ((float) Days.daysBetween(this.startDate, this.endDate).getDays()) )
+                            * this.size);
+
             this.markprojectStart(offsetInPx);
         }
     }
@@ -121,10 +128,12 @@ public final class DetailItem {
     public void markDeadlineDay(DateTime maxdeadline) {
         DateTime deadline = maxdeadline.plusDays(1);
         if (!this.startDate.isAfter(deadline) && deadline.isBefore(endDate)) {
-            int offsetInPx = Math.round((((float) Days.daysBetween(
-                    this.startDate, deadline).getDays()) / ((float) Days
-                    .daysBetween(this.startDate, this.endDate).getDays()))
-                    * this.size);
+
+            int offsetInPx = Math.round(
+                    ( ((float) Days.daysBetween(this.startDate, deadline).getDays()) /
+                            ((float) Days.daysBetween(this.startDate, this.endDate).getDays()) )
+                            * this.size);
+
             // 1px per column side, 1px for right border and 1px own bg-width
             this.markDeadlineDay(Math.min(this.size - 4, offsetInPx));
         }

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailOneTimeTrackerState.java

@@ -29,24 +29,26 @@ import org.joda.time.Years;
 
 
 /**
- * Zoom level with years in the first level and semesters in the second level
+ * Zoom level with years in the first level and semesters in the second level.
+ *
  * @author Francisco Javier Moran Rúa
  * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
  */
-public class DetailOneTimeTrackerState extends
-        TimeTrackerStateWithSubintervalsFitting {
+public class DetailOneTimeTrackerState extends TimeTrackerStateWithSubintervalsFitting {
 
-    public static final Period MINIMUN_PERIOD = PeriodType.YEARS.amount(6);
+    static final Period MINIMUM_PERIOD = PeriodType.YEARS.amount(6);
 
     private static final int FIRST_LEVEL_ITEM_SIZE = 200;
+
     private static final int SECOND_LEVEL_ITEM_SIZE = 100;
 
     public final double daysPerPixel() {
-        return ((double) 365 / FIRST_LEVEL_ITEM_SIZE);
+        return (double) 365 / FIRST_LEVEL_ITEM_SIZE;
     }
 
-    DetailOneTimeTrackerState(IDetailItemModificator firstLevelModificator,
-            IDetailItemModificator secondLevelModificator) {
+    DetailOneTimeTrackerState(
+            IDetailItemModificator firstLevelModificator, IDetailItemModificator secondLevelModificator) {
+
         super(firstLevelModificator, secondLevelModificator);
     }
 
@@ -62,15 +64,11 @@ public class DetailOneTimeTrackerState extends
 
     @Override
     protected IDetailItemCreator getDetailItemCreatorFirstLevel() {
-        return new IDetailItemCreator() {
-            @Override
-            public DetailItem create(DateTime start) {
-                int year = start.getYear();
-                DateTime end = new LocalDate(year + 1, 1, 1)
-                        .toDateTimeAtStartOfDay();
-                return new DetailItem(FIRST_LEVEL_ITEM_SIZE, start.getYear()
-                        + "", start, end);
-            }
+        return start -> {
+            int year = start.getYear();
+            DateTime end = new LocalDate(year + 1, 1, 1).toDateTimeAtStartOfDay();
+
+            return new DetailItem(FIRST_LEVEL_ITEM_SIZE, Integer.toString(start.getYear()), start, end);
         };
     }
 
@@ -81,15 +79,8 @@ public class DetailOneTimeTrackerState extends
 
     @Override
     protected IDetailItemCreator getDetailItemCreatorSecondLevel() {
-        return new IDetailItemCreator() {
-
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                return new DetailItem(SECOND_LEVEL_ITEM_SIZE,
-                        dateTime.getMonthOfYear() == 1 ? "H1" : "H2", dateTime,
-                        dateTime.plusMonths(6));
-            }
-        };
+        return dateTime -> new DetailItem(
+                SECOND_LEVEL_ITEM_SIZE, dateTime.getMonthOfYear() == 1 ? "H1" : "H2", dateTime, dateTime.plusMonths(6));
     }
 
     @Override
@@ -103,12 +94,12 @@ public class DetailOneTimeTrackerState extends
     }
 
     public static LocalDate doYearRound(LocalDate date, boolean down) {
-        return new LocalDate(date.getYear() + (down?0:1), 1, 1);
+        return new LocalDate(date.getYear() + (down ? 0 : 1), 1, 1);
     }
 
     @Override
     protected Period getMinimumPeriod() {
-        return MINIMUN_PERIOD;
+        return MINIMUM_PERIOD;
     }
 
-}
+}

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailSixTimeTrackerState.java

@@ -1,112 +0,0 @@
-/*
- * This file is part of LibrePlan
- *
- * Copyright (C) 2009-2010 Fundación para o Fomento da Calidade Industrial e
- *                         Desenvolvemento Tecnolóxico de Galicia
- * Copyright (C) 2010-2011 Igalia, S.L.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package org.zkoss.ganttz.timetracker.zoom;
-
-import org.joda.time.DateTime;
-import org.joda.time.Days;
-import org.joda.time.LocalDate;
-import org.joda.time.ReadablePeriod;
-
-/**
- * Zoom level for weeks in the first level and days in the second level
- * @author Óscar González Fernández <ogonzalez@igalia.com>
- * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
- */
-public class DetailSixTimeTrackerState extends
-        TimeTrackerStateWithSubintervalsFitting {
-
-    private static final int NUMBER_OF_DAYS_MINIMUM = 50;
-    public static final int FIRST_LEVEL_SIZE = 672;
-    public static final int SECOND_LEVEL_SIZE = 96;
-
-    DetailSixTimeTrackerState(IDetailItemModificator firstLevelModificator,
-            IDetailItemModificator secondLevelModificator) {
-        super(firstLevelModificator, secondLevelModificator);
-    }
-
-    public final double daysPerPixel() {
-        return ((double) 1 / SECOND_LEVEL_SIZE);
-    }
-
-    @Override
-    protected IDetailItemCreator getDetailItemCreatorFirstLevel() {
-        return new IDetailItemCreator() {
-
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                return new DetailItem(FIRST_LEVEL_SIZE, dateTime
-                        .getWeekOfWeekyear()
-                        + dateTime.toString(", MMM YYYY"), dateTime, dateTime
-                        .plusDays(7));
-            }
-        };
-    }
-
-    @Override
-    protected IDetailItemCreator getDetailItemCreatorSecondLevel() {
-        return new IDetailItemCreator() {
-
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                return new DetailItem(SECOND_LEVEL_SIZE, dateTime
-                        .getDayOfMonth()
-                        + "", dateTime, dateTime.plusDays(1));
-            }
-        };
-    }
-
-    @Override
-    protected ReadablePeriod getPeriodFirstLevel() {
-        return Days.days(7);
-    }
-
-    @Override
-    protected ReadablePeriod getPeriodSecondLevel() {
-        return Days.days(1);
-    }
-
-    @Override
-    protected LocalDate round(LocalDate date, boolean down) {
-        int dayOfWeek = date.getDayOfWeek();
-        if (dayOfWeek == 1) {
-            return date;
-        }
-        return down ? date.withDayOfWeek(1) : date.withDayOfWeek(1)
-                .plusWeeks(1);
-    }
-
-    @Override
-    protected Period getMinimumPeriod() {
-        return PeriodType.DAYS.amount(NUMBER_OF_DAYS_MINIMUM);
-    }
-
-    @Override
-    protected ZoomLevel getZoomLevel() {
-        return ZoomLevel.DETAIL_FIVE;
-    }
-
-    @Override
-    public int getSecondLevelSize() {
-        return SECOND_LEVEL_SIZE;
-    }
-
-}

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailThreeTimeTrackerState.java

@@ -28,25 +28,27 @@ import org.joda.time.ReadablePeriod;
 import org.zkoss.util.Locales;
 
 /**
- * Zoom level with semesters in the first level and months in the second level
+ * Zoom level with semesters in the first level and months in the second level.
+ *
  * @author Óscar González Fernández <ogonzalez@igalia.com>
  * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
  */
-public class DetailThreeTimeTrackerState extends
-        TimeTrackerStateWithSubintervalsFitting {
+public class DetailThreeTimeTrackerState extends TimeTrackerStateWithSubintervalsFitting {
 
     private static final int NUMBER_OF_MONTHS_MINIMUM = 30;
 
-    DetailThreeTimeTrackerState(IDetailItemModificator firstLevelModificator,
-            IDetailItemModificator secondLevelModificator) {
+    private static final int FIRST_LEVEL_SIZE = 300;
+
+    protected static final int SECOND_LEVEL_SIZE = 50;
+
+    DetailThreeTimeTrackerState(
+            IDetailItemModificator firstLevelModificator, IDetailItemModificator secondLevelModificator) {
+
         super(firstLevelModificator, secondLevelModificator);
     }
 
-    private static final int FIRST_LEVEL_SIZE = 300;
-    protected static final int SECOND_LEVEL_SIZE = 50;
-
     public final double daysPerPixel() {
-        return ((double) 182.5 / FIRST_LEVEL_SIZE);
+        return 182.5 / FIRST_LEVEL_SIZE;
     }
 
     @Override
@@ -61,31 +63,22 @@ public class DetailThreeTimeTrackerState extends
 
     @Override
     protected IDetailItemCreator getDetailItemCreatorSecondLevel() {
-        return new IDetailItemCreator() {
-
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                return new DetailItem(SECOND_LEVEL_SIZE,
-                        getMonthString(dateTime),
-                        dateTime, dateTime.plusMonths(1));
-            }
-        };
+        return dateTime -> new DetailItem(
+                SECOND_LEVEL_SIZE, getMonthString(dateTime), dateTime, dateTime.plusMonths(1));
     }
 
     @Override
     protected LocalDate round(LocalDate date, boolean down) {
-        if (date.getMonthOfYear() == 1 && date.getDayOfMonth() == 1) {
-            return date;
-        }
-        if (date.getMonthOfYear() == 7 && date.getDayOfMonth() == 1) {
+        if ( (date.getMonthOfYear() == 1 || date.getMonthOfYear() == 7) && date.getDayOfMonth() == 1) {
             return date;
         }
+
         date = date.withDayOfMonth(1);
+
         if (date.getMonthOfYear() < 7) {
             return down ? date.withMonthOfYear(1) : date.withMonthOfYear(7);
         } else {
-            return down ? date.withMonthOfYear(7) : date.plusYears(1)
-                    .withMonthOfYear(1);
+            return down ? date.withMonthOfYear(7) : date.plusYears(1).withMonthOfYear(1);
         }
     }
 
@@ -94,20 +87,13 @@ public class DetailThreeTimeTrackerState extends
     }
 
     private String getYearWithSemesterString(DateTime dateTime) {
-        return dateTime.getYear() + ","
-                + (dateTime.getMonthOfYear() < 6 ? "H1" : "H2");
+        return dateTime.getYear() + "," + (dateTime.getMonthOfYear() < 6 ? "H1" : "H2");
     }
 
     @Override
     protected IDetailItemCreator getDetailItemCreatorFirstLevel() {
-        return new IDetailItemCreator() {
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                return new DetailItem(FIRST_LEVEL_SIZE,
-                        getYearWithSemesterString(dateTime), dateTime, dateTime
-                                .plusMonths(6));
-            }
-        };
+        return dateTime -> new DetailItem(
+                FIRST_LEVEL_SIZE, getYearWithSemesterString(dateTime), dateTime, dateTime.plusMonths(6));
     }
 
     @Override

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/DetailTwoTimeTrackerState.java

@@ -21,38 +21,33 @@
 
 package org.zkoss.ganttz.timetracker.zoom;
 
-import org.joda.time.DateTime;
 import org.joda.time.LocalDate;
 import org.joda.time.Months;
 import org.joda.time.ReadablePeriod;
 import org.joda.time.Years;
 
 /**
- * Zoom level with years in the first level and quarters in the second level
+ * Zoom level with years in the first level and quarters in the second level.
+ *
  * @author Francisco Javier Moran Rúa
  * @author Lorenzo Tilve Álvaro <ltilve@igalia.com>
  */
-public class DetailTwoTimeTrackerState extends
-        TimeTrackerStateWithSubintervalsFitting {
+public class DetailTwoTimeTrackerState extends TimeTrackerStateWithSubintervalsFitting {
 
     private static final int FIRST_LEVEL_ITEM_SIZE = 400;
+
     private static final int SECOND_LEVEL_ITEM_SIZE = 100;
 
-    protected DetailTwoTimeTrackerState(
-            IDetailItemModificator firstLevelModificator,
-            IDetailItemModificator secondLevelModificator) {
+    protected DetailTwoTimeTrackerState(IDetailItemModificator firstLevelModificator,
+                                        IDetailItemModificator secondLevelModificator) {
+
         super(firstLevelModificator, secondLevelModificator);
     }
 
     @Override
     protected IDetailItemCreator getDetailItemCreatorFirstLevel() {
-        return new IDetailItemCreator() {
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                return new DetailItem(FIRST_LEVEL_ITEM_SIZE, dateTime.getYear()
-                        + "", dateTime, dateTime);
-            }
-        };
+        return dateTime ->
+                new DetailItem(FIRST_LEVEL_ITEM_SIZE, Integer.toString(dateTime.getYear()), dateTime, dateTime);
     }
 
     @Override
@@ -62,14 +57,11 @@ public class DetailTwoTimeTrackerState extends
 
     @Override
     protected IDetailItemCreator getDetailItemCreatorSecondLevel() {
-        return new IDetailItemCreator() {
-            @Override
-            public DetailItem create(DateTime dateTime) {
-                int quarterNumber = dateTime.getMonthOfYear() / 3 + 1;
-                String quarterCaption = "Q" + quarterNumber;
-                return new DetailItem(SECOND_LEVEL_ITEM_SIZE, quarterCaption,
-                        dateTime, dateTime.plusMonths(3));
-            }
+        return dateTime ->  {
+            int quarterNumber = dateTime.getMonthOfYear() / 3 + 1;
+            String quarterCaption = "Q" + quarterNumber;
+
+            return new DetailItem(SECOND_LEVEL_ITEM_SIZE, quarterCaption, dateTime, dateTime.plusMonths(3));
         };
     }
 
@@ -85,12 +77,12 @@ public class DetailTwoTimeTrackerState extends
 
     @Override
     protected Period getMinimumPeriod() {
-        return DetailOneTimeTrackerState.MINIMUN_PERIOD;
+        return DetailOneTimeTrackerState.MINIMUM_PERIOD;
     }
 
     @Override
     public double daysPerPixel() {
-        return ((double) 365 / FIRST_LEVEL_ITEM_SIZE);
+        return (double) 365 / FIRST_LEVEL_ITEM_SIZE;
     }
 
     @Override

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/IZoomLevelChangedListener.java

@@ -24,6 +24,6 @@ package org.zkoss.ganttz.timetracker.zoom;
 
 public interface IZoomLevelChangedListener {
 
-    public void zoomLevelChanged(ZoomLevel detailLevel);
+    void zoomLevelChanged(ZoomLevel detailLevel);
 
 }

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/SeveralModificators.java

@@ -30,12 +30,13 @@ import org.apache.commons.lang3.Validate;
 
 /**
  * @author Óscar González Fernández <ogonzalez@igalia.com>
- *
  */
 public class SeveralModificators implements IDetailItemModificator {
 
+    private final List<IDetailItemModificator> modificators;
+
     public static IDetailItemModificator empty() {
-        return new SeveralModificators(Collections.<IDetailItemModificator> emptyList());
+        return new SeveralModificators(Collections.emptyList());
     }
 
     public static IDetailItemModificator create(IDetailItemModificator... modificators) {
@@ -46,8 +47,6 @@ public class SeveralModificators implements IDetailItemModificator {
         return new SeveralModificators(modificators);
     }
 
-    private final List<IDetailItemModificator> modificators;
-
     private SeveralModificators(Collection<? extends IDetailItemModificator> modificators) {
         Validate.noNullElements(modificators);
         this.modificators = new ArrayList<>(modificators);

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/TimeTrackerState.java

@@ -47,6 +47,24 @@ import org.zkoss.ganttz.util.Interval;
  */
 public abstract class TimeTrackerState {
 
+    protected static final long MILLSECONDS_IN_DAY = 1000 * 60 * 60 * 24L;
+
+    /**
+     * Pending to calculate interval dinamically
+     */
+    protected static final int NUMBER_OF_ITEMS_MINIMUM = 4;
+
+    private final IDetailItemModificator firstLevelModificator;
+
+    private final IDetailItemModificator secondLevelModificator;
+
+    protected TimeTrackerState(IDetailItemModificator firstLevelModificator,
+                               IDetailItemModificator secondLevelModificator) {
+
+        this.firstLevelModificator = firstLevelModificator;
+        this.secondLevelModificator = secondLevelModificator;
+    }
+
     public static Date year(int year) {
         Calendar calendar = Calendar.getInstance();
         calendar.clear();
@@ -54,7 +72,7 @@ public abstract class TimeTrackerState {
         return calendar.getTime();
     }
 
-    public static abstract class LazyGenerator<T> implements Iterator<T> {
+    public abstract static class LazyGenerator<T> implements Iterator<T> {
 
         private T current;
 
@@ -69,7 +87,9 @@ public abstract class TimeTrackerState {
 
         @Override
         public T next() {
-            return this.current = next(this.current);
+            this.current = next(this.current);
+
+            return this.current;
         }
 
         protected abstract T next(T last);
@@ -80,27 +100,15 @@ public abstract class TimeTrackerState {
         }
     }
 
-    protected static final long MILLSECONDS_IN_DAY = 1000 * 60 * 60 * 24;
-
-    // Pending to calculate interval dinamically
-    protected static final int NUMBER_OF_ITEMS_MINIMUM = 4;
-
-    private final IDetailItemModificator firstLevelModificator;
-
-    private final IDetailItemModificator secondLevelModificator;
-
-    protected TimeTrackerState(IDetailItemModificator firstLevelModificator,
-            IDetailItemModificator secondLevelModificator) {
-        this.firstLevelModificator = firstLevelModificator;
-        this.secondLevelModificator = secondLevelModificator;
-    }
-
-    // When applied after setting current day, removes extra data as current day
-    // or bank holidays, and must proccess the array twice. May be refactorized
-    private static List<DetailItem> markEvens(
-            Collection<? extends DetailItem> items) {
+    /**
+     * When applied after setting current day, removes extra data as current day or bank holidays,
+     * and must process the array twice.
+     *
+     * May be refactorized.
+     */
+    private static List<DetailItem> markEvens(Collection<? extends DetailItem> items) {
         boolean even = false;
-        ArrayList<DetailItem> result = new ArrayList<DetailItem>();
+        ArrayList<DetailItem> result = new ArrayList<>();
 
         for (DetailItem detailItem : items) {
             detailItem.setEven(even);
@@ -120,26 +128,29 @@ public abstract class TimeTrackerState {
 
     public Collection<DetailItem> getSecondLevelDetails(Interval interval) {
         if (getZoomLevel() == ZoomLevel.DETAIL_FIVE) {
-            // Evens are not highlighted in day view
+            // Events are not highlighted in day view
             return applyConfiguredModifications(
                     secondLevelModificator,
-                    createDetailsForSecondLevel(interval), getZoomLevel());
+                    createDetailsForSecondLevel(interval),
+                    getZoomLevel());
         } else {
             return markEvens(applyConfiguredModifications(
                     secondLevelModificator,
-                    createDetailsForSecondLevel(interval), getZoomLevel()));
+                    createDetailsForSecondLevel(interval),
+                    getZoomLevel()));
         }
     }
 
     public Collection<DetailItem> getFirstLevelDetails(Interval interval) {
-        return applyConfiguredModifications(firstLevelModificator,
-                createDetailsForFirstLevel(interval), getZoomLevel());
+        return applyConfiguredModifications(
+                firstLevelModificator, createDetailsForFirstLevel(interval), getZoomLevel());
     }
 
-    private static List<DetailItem> applyConfiguredModifications(
-            IDetailItemModificator modificator,
-            Collection<? extends DetailItem> detailsItems, ZoomLevel zoomlevel) {
-        List<DetailItem> result = new ArrayList<DetailItem>(detailsItems.size());
+    private static List<DetailItem> applyConfiguredModifications(IDetailItemModificator modificator,
+                                                                 Collection<? extends DetailItem> detailsItems,
+                                                                 ZoomLevel zoomlevel) {
+
+        List<DetailItem> result = new ArrayList<>(detailsItems.size());
         for (DetailItem each : detailsItems) {
             result.add(modificator.applyModificationsTo(each, zoomlevel));
         }
@@ -147,41 +158,43 @@ public abstract class TimeTrackerState {
     }
 
     private Collection<DetailItem> createDetails(Interval interval,
-            Iterator<LocalDate> datesGenerator,
-            IDetailItemCreator detailItemCreator) {
+                                                 Iterator<LocalDate> datesGenerator,
+                                                 IDetailItemCreator detailItemCreator) {
+
+        List<DetailItem> result = new ArrayList<>();
         LocalDate current = interval.getStart();
         LocalDate end = interval.getFinish();
-        List<DetailItem> result = new ArrayList<DetailItem>();
+
         while (current.isBefore(end)) {
-            result.add(detailItemCreator.create(current
-                    .toDateTimeAtStartOfDay()));
+            result.add(detailItemCreator.create(current.toDateTimeAtStartOfDay()));
             assert datesGenerator.hasNext();
             current = datesGenerator.next();
         }
+
         return result;
     }
 
-    private final Collection<DetailItem> createDetailsForFirstLevel(
-            Interval interval) {
+    private final Collection<DetailItem> createDetailsForFirstLevel(Interval interval) {
         Interval realInterval = getRealIntervalFor(interval);
-        return createDetails(realInterval,
+
+        return createDetails(
+                realInterval,
                 getPeriodsFirstLevelGenerator(realInterval.getStart()),
                 getDetailItemCreatorFirstLevel());
     }
 
-    protected abstract Iterator<LocalDate> getPeriodsFirstLevelGenerator(
-            LocalDate start);
+    protected abstract Iterator<LocalDate> getPeriodsFirstLevelGenerator(LocalDate start);
 
-    private final Collection<DetailItem> createDetailsForSecondLevel(
-            Interval interval) {
+    private final Collection<DetailItem> createDetailsForSecondLevel(Interval interval) {
         Interval realInterval = getRealIntervalFor(interval);
-        return createDetails(realInterval,
+
+        return createDetails(
+                realInterval,
                 getPeriodsSecondLevelGenerator(realInterval.getStart()),
                 getDetailItemCreatorSecondLevel());
     }
 
-    protected abstract Iterator<LocalDate> getPeriodsSecondLevelGenerator(
-            LocalDate start);
+    protected abstract Iterator<LocalDate> getPeriodsSecondLevelGenerator(LocalDate start);
 
     protected abstract IDetailItemCreator getDetailItemCreatorFirstLevel();
 
@@ -201,6 +214,7 @@ public abstract class TimeTrackerState {
                 return Years.yearsBetween(start, end);
             }
         },
+
         MONTHS {
             @Override
             public ReadablePeriod toPeriod(int amount) {
@@ -212,6 +226,7 @@ public abstract class TimeTrackerState {
                 return Months.monthsBetween(start, end);
             }
         },
+
         WEEKS {
             @Override
             public ReadablePeriod toPeriod(int amount) {
@@ -223,6 +238,7 @@ public abstract class TimeTrackerState {
                 return Weeks.weeksBetween(start, end);
             }
         },
+
         DAYS {
             @Override
             public ReadablePeriod toPeriod(int amount) {
@@ -237,8 +253,7 @@ public abstract class TimeTrackerState {
 
         public abstract ReadablePeriod toPeriod(int amount);
 
-        public abstract BaseSingleFieldPeriod differenceBetween(
-                LocalDate start, LocalDate end);
+        public abstract BaseSingleFieldPeriod differenceBetween(LocalDate start, LocalDate end);
 
         public Period amount(int amount) {
             return new Period(this, amount);
@@ -262,18 +277,16 @@ public abstract class TimeTrackerState {
         }
 
         BaseSingleFieldPeriod asPeriod(Interval interval) {
-            return type.differenceBetween(interval.getStart(),
-                    interval.getFinish());
+            return type.differenceBetween(interval.getStart(), interval.getFinish());
         }
     }
 
     protected abstract Period getMinimumPeriod();
 
     private Interval ensureMinimumInterval(Interval interval) {
-        LocalDate newEnd = interval.getStart().plus(
-                getMinimumPeriod().toPeriod());
-        return new Interval(interval.getStart(), Collections.max(asList(newEnd,
-                interval.getFinish())));
+        LocalDate newEnd = interval.getStart().plus(getMinimumPeriod().toPeriod());
+
+        return new Interval(interval.getStart(), Collections.max(asList(newEnd, interval.getFinish())));
     }
 
     public Interval getRealIntervalFor(Interval testInterval) {
@@ -283,9 +296,8 @@ public abstract class TimeTrackerState {
     private Interval calculateForAtLeastMinimum(Interval atLeastMinimum) {
         LocalDate start = round(atLeastMinimum.getStart(), true);
         LocalDate finish = round(atLeastMinimum.getFinish(), false);
-        Interval result = new Interval(start.toDateTimeAtStartOfDay().toDate(),
-                finish.toDateTimeAtStartOfDay().toDate());
-        return result;
+
+        return new Interval(start.toDateTimeAtStartOfDay().toDate(), finish.toDateTimeAtStartOfDay().toDate());
     }
 
     public abstract double daysPerPixel();

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/TimeTrackerStateWithSubintervalsFitting.java

@@ -32,9 +32,8 @@ import org.joda.time.ReadablePeriod;
  */
 public abstract class TimeTrackerStateWithSubintervalsFitting extends TimeTrackerState {
 
-    protected TimeTrackerStateWithSubintervalsFitting(
-            IDetailItemModificator firstLevelModificator,
-            IDetailItemModificator secondLevelModificator) {
+    protected TimeTrackerStateWithSubintervalsFitting(IDetailItemModificator firstLevelModificator,
+                                                      IDetailItemModificator secondLevelModificator) {
 
         super(firstLevelModificator, secondLevelModificator);
     }

ganttzk/src/main/java/org/zkoss/ganttz/timetracker/zoom/ZoomLevel.java

@@ -23,8 +23,10 @@ package org.zkoss.ganttz.timetracker.zoom;
 
 import org.joda.time.Days;
 import org.joda.time.LocalDate;
-import org.zkoss.ganttz.i18n.I18nHelper;
+
 /**
+ * Describes levels of zooming (time-zooming) on Gantt panel.
+ *
  * @author Francisco Javier Moran Rúa
  */
 public enum ZoomLevel {
@@ -32,8 +34,8 @@ public enum ZoomLevel {
     DETAIL_ONE(_("Year")) {
         @Override
         public TimeTrackerState getTimeTrackerState(
-                IDetailItemModificator firstLevel,
-                IDetailItemModificator secondLevel) {
+                IDetailItemModificator firstLevel, IDetailItemModificator secondLevel) {
+
             return new DetailOneTimeTrackerState(firstLevel, secondLevel);
         }
 
@@ -42,11 +44,12 @@ public enum ZoomLevel {
             return days > 950;
         }
     },
+
     DETAIL_TWO(_("Quarter")) {
         @Override
         public TimeTrackerState getTimeTrackerState(
-                IDetailItemModificator firstLevel,
-                IDetailItemModificator secondLevel) {
+                IDetailItemModificator firstLevel, IDetailItemModificator secondLevel) {
+
             return new DetailTwoTimeTrackerState(firstLevel, secondLevel);
         }
 
@@ -55,11 +58,12 @@ public enum ZoomLevel {
             return days > 550;
         }
     },
+
     DETAIL_THREE(_("Month")) {
         @Override
         public TimeTrackerState getTimeTrackerState(
-                IDetailItemModificator firstLevel,
-                IDetailItemModificator secondLevel) {
+                IDetailItemModificator firstLevel, IDetailItemModificator secondLevel) {
+
             return new DetailThreeTimeTrackerState(firstLevel, secondLevel);
         }
 
@@ -68,11 +72,12 @@ public enum ZoomLevel {
             return days > 175;
         }
     },
+
     DETAIL_FOUR(_("Week")) {
         @Override
         public TimeTrackerState getTimeTrackerState(
-                IDetailItemModificator firstLevel,
-                IDetailItemModificator secondLevel) {
+                IDetailItemModificator firstLevel, IDetailItemModificator secondLevel) {
+
             return new DetailFourTimeTrackerState(firstLevel, secondLevel);
         }
 
@@ -81,25 +86,13 @@ public enum ZoomLevel {
             return days > 50;
         }
     },
+
     DETAIL_FIVE(_("Day")) {
         @Override
         public TimeTrackerState getTimeTrackerState(
-                IDetailItemModificator firstLevel,
-                IDetailItemModificator secondLevel) {
-            return new DetailFiveTimeTrackerState(firstLevel, secondLevel);
-        }
+                IDetailItemModificator firstLevel, IDetailItemModificator secondLevel) {
 
-        @Override
-        public boolean isSuitableFor(int days) {
-            return true;
-        }
-    },
-    DETAIL_SIX(_("Hour")) {
-        @Override
-        public TimeTrackerState getTimeTrackerState(
-                IDetailItemModificator firstLevel,
-                IDetailItemModificator secondLevel) {
-            return new DetailSixTimeTrackerState(firstLevel, secondLevel);
+            return new DetailFiveTimeTrackerState(firstLevel, secondLevel);
         }
 
         @Override
@@ -108,57 +101,50 @@ public enum ZoomLevel {
         }
     };
 
+    private String internalName;
+
+    ZoomLevel(String name) {
+        this.internalName = name;
+    }
+
     /**
-     * Forces to mark the string as needing translation
+     * Forces to mark the string as needing translation.
      */
     private static String _(String string) {
         return string;
     }
 
-    private String internalName;
-
     public String getInternalName() {
         return internalName;
     }
 
-    private ZoomLevel(String name) {
-        this.internalName = name;
-    }
-
     /**
-     * @return if there is no next, returns <code>this</code>. Otherwise returns
-     *         the next one.
+     * @return if there is no next, returns <code>this</code>. Otherwise returns the next one.
      */
     public ZoomLevel next() {
         final int next = ordinal() + 1;
-        if (next == ZoomLevel.values().length) {
-            return this;
-        }
-        return ZoomLevel.values()[next];
+
+        return next == ZoomLevel.values().length ? this : ZoomLevel.values()[next];
     }
 
     /**
-     * @return if there is no previous, returns <code>this</code>. Otherwise
-     *         returns the previous one.
+     * @return if there is no previous, returns <code>this</code>. Otherwise returns the previous one.
      */
     public ZoomLevel previous() {
-        if (ordinal() == 0) {
-            return this;
-        }
-        return ZoomLevel.values()[ordinal() - 1];
+        return ordinal() == 0 ? this : ZoomLevel.values()[ordinal() - 1];
     }
 
     public abstract TimeTrackerState getTimeTrackerState(
-            IDetailItemModificator firstLevel,
-            IDetailItemModificator secondLevel);
+            IDetailItemModificator firstLevel, IDetailItemModificator secondLevel);
 
     @Override
     public String toString() {
-        return I18nHelper._(internalName);
+        return _(internalName);
     }
 
     public static ZoomLevel getFromString(String zoomLevelParameter) {
         ZoomLevel requiredZoomLevel = ZoomLevel.DETAIL_ONE;
+
         if (zoomLevelParameter != null) {
             for (ZoomLevel z : ZoomLevel.values()) {
                 if (zoomLevelParameter.equals(z.internalName)) {
@@ -170,10 +156,10 @@ public enum ZoomLevel {
 
     }
 
-    public static ZoomLevel getDefaultZoomByDates(LocalDate initDate,
-            LocalDate endDate) {
+    public static ZoomLevel getDefaultZoomByDates(LocalDate initDate, LocalDate endDate) {
         if (initDate != null && endDate != null) {
             int days = Days.daysBetween(initDate, endDate).getDays();
+
             for (ZoomLevel each : ZoomLevel.values()) {
                 if (each.isSuitableFor(days)) {
                     return each;

ganttzk/src/main/java/org/zkoss/ganttz/util/ComponentsFinder.java

@@ -29,7 +29,7 @@ import org.zkoss.zul.Grid;
 import org.zkoss.zul.Listbox;
 import org.zkoss.zul.Listitem;
 import org.zkoss.zul.Row;
-import org.zkoss.zul.api.Rows;
+import org.zkoss.zul.Rows;
 
 /**
  * Utility methods to find components
@@ -40,55 +40,63 @@ public class ComponentsFinder {
     private ComponentsFinder() {
     }
 
-    public static <T> List<T> findComponentsOfType(Class<T> type,
-            List<? extends Object> children) {
-        ArrayList<T> result = new ArrayList<T>();
+    public static <T> List<T> findComponentsOfType(Class<T> type, List<?> children) {
+        ArrayList<T> result = new ArrayList<>();
         for (Object child : children) {
-            if (type.isInstance(child)) {
+
+            if ( type.isInstance(child) ) {
                 result.add(type.cast(child));
             }
         }
+
         return result;
     }
 
-    public static Component findById(String id,
-            List<? extends Component> children) {
+    public static Component findById(String id, List<? extends Component> children) {
         for (Component child : children) {
-            if (child.getId().equals(id)) {
+
+            if ( child.getId().equals(id) ) {
                 return child;
             }
         }
+
         return null;
     }
 
     public static Row findRowByValue(Grid grid, Object needle) {
-        if (grid == null || needle == null) {
+        if ( grid == null || needle == null ) {
             return null;
         }
         Rows rows = grid.getRows();
         for (Object each : rows.getChildren()) {
-            if (each instanceof Row) {
+
+            if ( each instanceof Row ) {
                 Row row = (Row) each;
                 Object value = row.getValue();
-                if (needle.equals(value)) {
+
+                if ( needle.equals(value) ) {
                     return row;
                 }
             }
         }
+
         return null;
     }
 
     public static Listitem findItemByValue(Listbox listbox, Object needle) {
-        if (listbox == null || needle == null) {
+        if ( listbox == null || needle == null ) {
             return null;
         }
+
         for (Object each : listbox.getItems()) {
             Listitem item = (Listitem) each;
             Object value = item.getValue();
-            if (needle.toString().equals(value.toString())) {
+
+            if ( needle.toString().equals(value.toString()) ) {
                 return item;
             }
         }
+
         return null;
     }
 

ganttzk/src/main/java/org/zkoss/ganttz/util/LongOperationFeedback.java

@@ -41,8 +41,9 @@ import org.zkoss.zk.ui.util.Clients;
 
 
 /**
- * @author Óscar González Fernández <ogonzalez@igalia.com>
+ * Handler of long operations ( {@link Clients#showBusy(String)}, {@link Clients#clearBusy()} ).
  *
+ * @author Óscar González Fernández <ogonzalez@igalia.com>
  */
 public class LongOperationFeedback {
 
@@ -61,16 +62,20 @@ public class LongOperationFeedback {
         }
     };
 
-    public static void execute(final Component component, final ILongOperation longOperation) {
+    public static void execute(final Component component,
+                               final ILongOperation longOperation) {
+
         Validate.notNull(component);
         Validate.notNull(longOperation);
 
-        if ( alreadyInside.get() ) {
+        if (alreadyInside.get()) {
             dispatchActionDirectly(longOperation);
+
             return;
         }
 
         Clients.showBusy(longOperation.getName());
+
         executeLater(component, new Runnable() {
             public void run() {
                 try {
@@ -86,13 +91,13 @@ public class LongOperationFeedback {
         });
     }
 
-    public static void executeLater(final Component component, final Runnable runnable) {
+    public static void executeLater(final Component component,
+                                    final Runnable runnable) {
         Validate.notNull(runnable);
         Validate.notNull(component);
-
         final String eventName = generateEventName();
-        component.addEventListener(eventName, new EventListener() {
 
+        component.addEventListener(eventName, new EventListener() {
             @Override
             public void onEvent(Event event) {
                 try {
@@ -131,13 +136,9 @@ public class LongOperationFeedback {
     }
 
     public static IDesktopUpdate and(final IDesktopUpdate... desktopUpdates) {
-        return new IDesktopUpdate() {
-
-            @Override
-            public void doUpdate() {
-                for (IDesktopUpdate each : desktopUpdates) {
-                    each.doUpdate();
-                }
+        return () -> {
+            for (IDesktopUpdate each : desktopUpdates) {
+                each.doUpdate();
             }
         };
     }
@@ -149,50 +150,39 @@ public class LongOperationFeedback {
     private static final ExecutorService executor = Executors.newCachedThreadPool();
 
     public static <T> IDesktopUpdatesEmitter<T> doNothingEmitter() {
-        return new IDesktopUpdatesEmitter<T>() {
-            @Override
-            public void doUpdate(T value) {
-            }
-        };
+        return value -> {};
     }
 
     /**
-     * Executes a long operation. The background operation can send
-     * {@link IDesktopUpdate} objects that can update desktop state. Trying to
-     * update the components in any other way would fail
-     */
-    public static void progressive(final Desktop desktop, final IBackGroundOperation<IDesktopUpdate> operation) {
-        progressive(desktop, operation, new IDesktopUpdatesEmitter<IDesktopUpdate>() {
-            @Override
-            public void doUpdate(IDesktopUpdate update) {
-                update.doUpdate();
-            }
-        });
-    }
-
-    /**
-     * Executes a long operation. The background operation can send
-     * <code>T</code> objects that can update desktop state. A
-     * {@link IDesktopUpdatesEmitter} that handle these objects is necessary.
+     * Executes a long operation.
+     * The background operation can send {@link IDesktopUpdate} objects that can update desktop state.
      * Trying to update the components in any other way would fail.
      */
-    public static <T> void progressive(
-            final Desktop desktop,
-            final IBackGroundOperation<T> operation,
-            final IDesktopUpdatesEmitter<T> emitter) {
+    public static void progressive(final Desktop desktop,
+                                   final IBackGroundOperation<IDesktopUpdate> operation) {
 
+        progressive(desktop, operation, (update) -> update.doUpdate());
+    }
+
+    /**
+     * Executes a long operation.
+     * The background operation can send
+     * <code>T</code> objects that can update desktop state.
+     * A {@link IDesktopUpdatesEmitter} that handle these objects is necessary.
+     * Trying to update the components in any other way would fail.
+     */
+    public static <T> void progressive(final Desktop desktop,
+                                       final IBackGroundOperation<T> operation,
+                                       final IDesktopUpdatesEmitter<T> emitter) {
         desktop.enableServerPush(true);
-        executor.execute(new Runnable() {
-
-            public void run() {
-                try {
-                    IBackGroundOperation<T> operationWithAsyncUpates = withAsyncUpates(operation, desktop);
-                    operationWithAsyncUpates.doOperation(emitter);
-                } catch (Exception e) {
-                    LOG.error("error executing background operation", e);
-                } finally {
-                    desktop.enableServerPush(false);
-                }
+        executor.execute(() -> {
+            try {
+                IBackGroundOperation<T> operationWithAsyncUpates = withAsyncUpates(operation, desktop);
+                operationWithAsyncUpates.doOperation(emitter);
+            } catch (Exception e) {
+                LOG.error("error executing background operation", e);
+            } finally {
+                desktop.enableServerPush(false);
             }
         });
     }
@@ -202,14 +192,14 @@ public class LongOperationFeedback {
             final Desktop desktop) {
 
         return new IBackGroundOperation<T>() {
+
             @Override
             public void doOperation(IDesktopUpdatesEmitter<T> originalEmitter) {
 
                 NotBlockingDesktopUpdates<T> notBlockingDesktopUpdates =
-                        new NotBlockingDesktopUpdates<T>(desktop, originalEmitter);
+                        new NotBlockingDesktopUpdates<>(desktop, originalEmitter);
 
                 Future<?> future = executor.submit(notBlockingDesktopUpdates);
-
                 try {
                     backgroundOperation.doOperation(notBlockingDesktopUpdates);
                 } finally {
@@ -231,7 +221,9 @@ public class LongOperationFeedback {
     private static class NotBlockingDesktopUpdates<T> implements IDesktopUpdatesEmitter<T>, Runnable {
 
         private BlockingQueue<EndOrValue<T>> queue = new LinkedBlockingQueue<>();
+
         private final IDesktopUpdatesEmitter<T> original;
+
         private final Desktop desktop;
 
         NotBlockingDesktopUpdates(Desktop desktop, IDesktopUpdatesEmitter<T> original) {
@@ -245,30 +237,28 @@ public class LongOperationFeedback {
         }
 
         void finish() {
-            queue.add(EndOrValue.<T> end());
+            queue.add(EndOrValue.end());
         }
 
         @Override
         public void run() {
+
             List<T> batch = new ArrayList<>();
 
             while (true) {
                 batch.clear();
                 EndOrValue<T> current;
-
                 try {
                     current = queue.take();
                 } catch (InterruptedException e) {
                     throw new RuntimeException(e);
                 }
 
-                if ( current.isEnd() ) {
+                if (current.isEnd())
                     return;
-                }
 
-                if ( !desktop.isAlive() || !desktop.isServerPushEnabled() ) {
+                if (!desktop.isAlive() || !desktop.isServerPushEnabled())
                     return;
-                }
 
                 try {
                     Executions.activate(desktop);
@@ -279,27 +269,30 @@ public class LongOperationFeedback {
 
                 try {
                     original.doUpdate(current.getValue());
-                    while ((current = queue.poll()) != null) {
 
-                        if ( current.isEnd() ) {
+                    while ((current = queue.poll()) != null) {
+                        if (current.isEnd()) {
                             break;
                         }
 
                         batch.add(current.getValue());
                         original.doUpdate(current.getValue());
                     }
+
                 } finally {
                     Executions.deactivate(desktop);
                 }
-                if ( current != null && current.isEnd() ) {
+
+                if (current != null && current.isEnd()) {
                     return;
                 }
+
             }
         }
 
     }
 
-    private static abstract class EndOrValue<T> {
+    private abstract static class EndOrValue<T> {
         public static <T> EndOrValue<T> end() {
             return new End<>();
         }
@@ -309,6 +302,7 @@ public class LongOperationFeedback {
         }
 
         public abstract boolean isEnd();
+
         public abstract T getValue() throws UnsupportedOperationException;
     }
 

ganttzk/src/main/java/org/zkoss/ganttz/util/MenuBuilder.java

@@ -31,32 +31,48 @@ import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.HtmlNativeComponent;
 import org.zkoss.zk.ui.Page;
 import org.zkoss.zk.ui.event.Event;
-import org.zkoss.zk.ui.event.EventListener;
 import org.zkoss.zk.ui.event.OpenEvent;
 import org.zkoss.zul.Menuitem;
 import org.zkoss.zul.Menupopup;
 import org.zkoss.zul.Menuseparator;
-import org.zkoss.zul.impl.api.XulElement;
+import org.zkoss.zul.impl.XulElement;
 
+/**
+ * Create context menu for right-click mouse.
+ *
+ * @param <T>
+ */
 public class MenuBuilder<T extends XulElement> {
 
-    public static <T extends XulElement> MenuBuilder<T> on(Page page,
-            Collection<T> elements) {
-        return new MenuBuilder<T>(page, elements);
+    private final List<T> elements;
+
+    private final List<Item> items = new ArrayList<>();
+
+    private Component root;
+
+    private T referenced;
+
+    private MenuBuilder(Page page, Collection<? extends T> elements) {
+        this.elements = new ArrayList<>(elements);
+        this.root = findVisibleOn(getRoots(page));
     }
 
-    public static <T extends XulElement> MenuBuilder<T> on(Page page,
-            T... elements) {
+    public static <T extends XulElement> MenuBuilder<T> on(Page page, Collection<T> elements) {
+        return new MenuBuilder<>(page, elements);
+    }
+
+    public static <T extends XulElement> MenuBuilder<T> on(Page page, T... elements) {
         return on(page, Arrays.asList(elements));
     }
 
-    public static interface ItemAction<T> {
-
-        void onEvent(T choosen, Event event);
+    public interface ItemAction<T> {
+        void onEvent(T chosen, Event event);
     }
 
     private class Item {
+
         private final String name;
+
         private final String icon;
 
         private final ItemAction<T> action;
@@ -70,60 +86,50 @@ public class MenuBuilder<T extends XulElement> {
         Menuitem createMenuItem() {
             Menuitem result = new Menuitem();
             result.setLabel(name);
-            if (icon != null) {
+
+            if ( icon != null ) {
                 result.setImage(icon);
             }
+
             return result;
         }
 
     }
 
-    private final List<T> elements;
-
-    private final List<Item> items = new ArrayList<Item>();
-
-    private Component root;
-
-    private MenuBuilder(Page page, Collection<? extends T> elements) {
-        this.elements = new ArrayList<T>(elements);
-        this.root = findVisibleOn(getRoots(page));
-    }
-
     private static List<Component> getRoots(Page page) {
-        List<Component> result = new ArrayList<Component>();
+        List<Component> result = new ArrayList<>();
         Component current = page.getFirstRoot();
+
         while (current != null) {
             result.add(current);
             current = current.getNextSibling();
         }
+
         return result;
     }
 
-    private static Component findVisibleOn(
-            Collection<? extends Component> candidates) {
+    private static Component findVisibleOn(Collection<? extends Component> candidates) {
         for (Component each : candidates) {
-            if (each.isVisible()) {
+            if ( each.isVisible() ) {
                 return each;
             }
         }
-        throw new RuntimeException(
-                "not found visible component on which to attach the menu");
+
+        throw new RuntimeException("not found visible component on which to attach the menu");
     }
 
-    public MenuBuilder<T> item(String name, String icon,
-            ItemAction<T> itemAction) {
-        if (name == null) {
+    public MenuBuilder<T> item(String name, String icon, ItemAction<T> itemAction) {
+        if ( name == null ) {
             throw new IllegalArgumentException("name cannot be null");
         }
-        if (itemAction == null) {
+        if ( itemAction == null ) {
             throw new IllegalArgumentException("itemAction cannot be null");
         }
         items.add(new Item(name, icon, itemAction));
+
         return this;
     }
 
-    private T referenced;
-
     public Menupopup createWithoutSettingContext() {
         return create(false);
     }
@@ -134,55 +140,55 @@ public class MenuBuilder<T extends XulElement> {
 
     private Menupopup create(boolean setContext) {
         Menupopup result = new Menupopup();
-        result.addEventListener("onOpen", new EventListener() {
 
-            @Override
-            public void onEvent(Event event) {
-                OpenEvent openEvent = (OpenEvent) event;
-                referenced = (T) openEvent.getReference();
-            }
+        result.addEventListener("onOpen", event -> {
+            OpenEvent openEvent = (OpenEvent) event;
+            referenced = (T) openEvent.getReference();
         });
+
         for (final Item item : items) {
-            if (!item.name.equals("separator")) {
+
+            if ( !"separator".equals(item.name) ) {
                 Menuitem menuItem = item.createMenuItem();
-                menuItem.addEventListener("onClick", new EventListener() {
-                    @Override
-                    public void onEvent(Event event) {
-                        ItemAction<T> action = item.action;
-                        action.onEvent(referenced, event);
-                    }
+
+                menuItem.addEventListener("onClick", event -> {
+                    ItemAction<T> action = item.action;
+                    action.onEvent(referenced, event);
                 });
+
                 result.appendChild(menuItem);
             } else {
                 Menuseparator separator = new Menuseparator();
                 result.appendChild(separator);
             }
         }
+
         insertInRootComponent(result);
-        if (setContext) {
+
+        if ( setContext ) {
             for (T element : elements) {
                 element.setContext(result);
             }
         }
+
         return result;
     }
 
     private void insertInRootComponent(Menupopup result) {
-        ArrayList<Component> children = new ArrayList<Component>(root
-                .getChildren());
+        ArrayList<Component> children = new ArrayList<>(root.getChildren());
         Collections.reverse(children);
-        // the Menupopup cannot be inserted after a HtmlNativeComponent, so we
-        // try to avoid it
-        if (children.isEmpty()) {
+        // The Menupopup cannot be inserted after a HtmlNativeComponent, so we try to avoid it
+        if ( children.isEmpty() ) {
             root.appendChild(result);
         }
+
         for (Component child : children) {
-            if (!(child instanceof HtmlNativeComponent)) {
+            if ( !(child instanceof HtmlNativeComponent) ) {
                 root.insertBefore(result, child);
                 return;
             }
         }
-        throw new RuntimeException("all children of " + root
-                + " are html native");
+
+        throw new RuntimeException("all children of " + root + " are html native");
     }
 }

ganttzk/src/main/java/org/zkoss/ganttz/util/MutableTreeModel.java

@@ -38,25 +38,29 @@ import org.zkoss.zul.event.TreeDataEvent;
 
 /**
  * @author Óscar González Fernández <ogonzalez@igalia.com>
+ * @author Vova Perebykivskyi <vova@libreplan-enterprise.com>
+ * @author Bogdan Bodnarjuk <b.bodnarjuk@libreplan-enterprise.com>
  */
+
 public class MutableTreeModel<T> extends AbstractTreeModel {
 
     private static final Log LOG = LogFactory.getLog(MutableTreeModel.class);
 
     public interface IChildrenExtractor<T> {
 
-        public List<? extends T> getChildren(T parent);
+        List<? extends T> getChildren(T parent);
 
     }
 
-    private static class Node<T> {
+    public static class Node<T> {
+
         private T value;
 
-        private List<Node<T>> children = new LinkedList<Node<T>>();
+        private List<Node<T>> children = new LinkedList<>();
 
         private Node<T> parentNode;
 
-        private Node(T value) {
+        public Node(T value) {
             this.value = value;
         }
 
@@ -64,7 +68,8 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
             for (Node<T> n : nodes) {
                 n.parentNode = this;
             }
-            if (position == null) {
+
+            if ( position == null ) {
                 children.addAll(nodes);
             } else {
                 children.addAll(position, nodes);
@@ -73,44 +78,54 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
 
         public int[] down(Node<T> node) {
             ListIterator<Node<T>> listIterator = children.listIterator();
+
             while (listIterator.hasNext()) {
                 Node<T> current = listIterator.next();
-                if (current == node && listIterator.hasNext()) {
+
+                if ( current == node && listIterator.hasNext() ) {
                     int nextIndex = listIterator.nextIndex();
                     listIterator.remove();
                     listIterator.next();
                     listIterator.add(node);
+
                     return new int[] { nextIndex - 1, nextIndex };
                 }
             }
+
             return new int[] {};
         }
 
         public int[] up(Node<T> node) {
-            ListIterator<Node<T>> listIterator = children.listIterator(children
-                    .size());
-            while (listIterator.hasPrevious()) {
+            ListIterator<Node<T>> listIterator = children.listIterator(children.size());
+
+            while ( listIterator.hasPrevious() ) {
                 Node<T> current = listIterator.previous();
-                if (current == node && listIterator.hasPrevious()) {
+
+                if ( current == node && listIterator.hasPrevious() ) {
                     listIterator.remove();
                     int previousIndex = listIterator.previousIndex();
                     listIterator.previous();
                     listIterator.add(current);
+
                     return new int[] { previousIndex, previousIndex + 1 };
                 }
             }
+
             return new int[] {};
         }
 
         private void until(LinkedList<Integer> result, Node<T> parent) {
-            if (parent.equals(this)) {
-                return;
-            } else if (isRoot()) {
-                // final reached, but parent not found
-                result.clear();
-            } else {
-                result.add(0, this.parentNode.getIndexOf(this));
-                this.parentNode.until(result, parent);
+            if ( !parent.equals(this) ) {
+
+                if ( isRoot() ) {
+
+                    /* Final reached, but parent not found */
+                    result.clear();
+
+                } else {
+                    result.add(0, this.parentNode.getIndexOf(this));
+                    this.parentNode.until(result, parent);
+                }
             }
 
         }
@@ -124,14 +139,16 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
         }
 
         public LinkedList<Integer> until(Node<T> parent) {
-            LinkedList<Integer> result = new LinkedList<Integer>();
+            LinkedList<Integer> result = new LinkedList<>();
             until(result, parent);
+
             return result;
         }
 
         public int remove() {
             int positionInParent = parentNode.getIndexOf(this);
             parentNode.children.remove(positionInParent);
+
             return positionInParent;
         }
 
@@ -143,10 +160,10 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
 
     private final Node<T> root;
 
-    private transient Map<T, Node<T>> nodesByDomainObject = new WeakHashMap<T, Node<T>>();
+    private transient Map<T, Node<T>> nodesByDomainObject = new WeakHashMap<>();
 
     private static <T> Node<T> wrapOne(T object) {
-        return new Node<T>(object);
+        return new Node<>(object);
     }
 
     private static <T> List<Node<T>> wrap(T... objects) {
@@ -154,14 +171,22 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
     }
 
     private static <T> List<Node<T>> wrap(Collection<? extends T> objects) {
-        List<Node<T>> result = new ArrayList<Node<T>>();
+        List<Node<T>> result = new ArrayList<>();
+
         for (T o : objects) {
             result.add(wrapOne(o));
         }
+
         return result;
     }
 
     private Node<T> find(Object domainObject) {
+        for (Map.Entry<T, Node<T>> item : nodesByDomainObject.entrySet()) {
+            if ( item.getKey() != null && item.getKey().equals(domainObject) ) {
+                return item.getValue();
+            }
+        }
+
         return nodesByDomainObject.get(domainObject);
     }
 
@@ -170,33 +195,65 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
     }
 
     public static <T> MutableTreeModel<T> create(Class<T> type) {
-        return new MutableTreeModel<T>(type, new Node<T>(null));
+        return new MutableTreeModel<>(type, new Node<>(null));
     }
 
     public static <T> MutableTreeModel<T> create(Class<T> type, T root) {
-        return new MutableTreeModel<T>(type, wrapOne(root));
+        return new MutableTreeModel<>(type, wrapOne(root));
     }
 
     private MutableTreeModel(Class<T> type, Node<T> root) {
         super(root);
-        if (type == null) {
+
+        if ( type == null ) {
             throw new IllegalArgumentException("type cannot be null");
         }
         nodesByDomainObject.put(unwrap(root), root);
         this.root = root;
     }
 
-    @Override
+    /**
+     * Is some cases it was returning new int[0], but should return new path instead.
+     * Reason of that: API changes. Before it was looking for child index manually.
+     * Now it is not looking at all.
+     * So I decided to return value by our own
+     * {@link MutableTreeModel#shouldILookForLastValue(Object, Node), {@link #shouldILookForParentValue(Object, Node)}}
+     * Not to use {@link AbstractTreeModel#getIndexOfChild(Object parent, Object child)}.
+     */
     public int[] getPath(Object parent, Object last) {
         Node<T> parentNode = find(parent);
         Node<T> lastNode = find(last);
-        if (parentNode == null || lastNode == null) {
+
+        if ( shouldILookForParentValue(parent, parentNode) ) {
+            parentNode = find( ((Node) parent).value );
+        }
+
+        if ( shouldILookForLastValue(last, lastNode) ) {
+            lastNode = find( ((Node) last).value );
+        }
+
+        if ( parentNode == null || lastNode == null)  {
             return new int[0];
         }
         List<Integer> path = lastNode.until(parentNode);
+
         return asIntArray(path);
     }
 
+    private boolean shouldILookForParentValue(Object parent, Node<T> parentNode) {
+        return parent != null &&
+                parentNode == null &&
+                parent.getClass().toString().contains("Node") &&
+                ((Node) parent).value != null;
+    }
+    private boolean shouldILookForLastValue(Object last, Node<T> lastNode) {
+        return last != null &&
+                lastNode == null &&
+                last.getClass().toString().contains("Node") &&
+                ((Node) last).value != null;
+    }
+
+    @Override
     public int[] getPath(Object last) {
         return getPath(getRoot(), last);
     }
@@ -205,30 +262,33 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
         T current = getRoot();
         for (int i = 0; i < path.length; i++) {
             int position = path[i];
-            if (position >= getChildCount(current)) {
+
+            if ( position >= getChildCount(current) ) {
+
                 throw new IllegalArgumentException(
-                        "Failure acessing the path at: "
-                                + stringRepresentationUntil(path, i));
+                        "Failure acessing the path at: " + stringRepresentationUntil(path, i));
             }
             current = getChild(current, position);
         }
+
         return current;
     }
 
     private static String stringRepresentationUntil(int[] path, int endExclusive) {
-        String valid = Arrays.toString(Arrays
-                .copyOfRange(path, 0, endExclusive));
-        String invalid = Arrays.toString(Arrays.copyOfRange(path, endExclusive,
-                path.length));
+        String valid = Arrays.toString(Arrays.copyOfRange(path, 0, endExclusive));
+        String invalid = Arrays.toString(Arrays.copyOfRange(path, endExclusive, path.length));
+
         return valid + "^" + invalid;
     }
 
     private int[] asIntArray(List<Integer> path) {
         int[] result = new int[path.size()];
         int i = 0;
+
         for (Integer integer : path) {
             result[i++] = integer;
         }
+
         return result;
     }
 
@@ -237,21 +297,74 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
         return unwrap(root);
     }
 
+    @Override
+    public T getChild(int[] path){
+        T node = getRoot();
+
+        for (int item : path) {
+            if (item < 0 || item > _childCount(node))
+                return null;
+
+            node = getChild(node, item);
+        }
+
+        return node;
+    }
+
+    private int _childCount(T parent) {
+        return isLeaf(parent) ? 0 : getChildCount(parent);
+    }
+
+    /**
+     * Previously index was correct,
+     * because ZK API was calling {@link AbstractTreeModel#getIndexOfChild(Object, Object)} method.
+     * Now it is not calling that method and sometimes index could be incorrect.
+     * So I decided to make --index if it will throw exception.
+     */
     @Override
     public T getChild(Object parent, int index) {
-        Node<T> node = find(parent);
-        return unwrap(node.children.get(index));
+        Node<T> node;
+
+        if (parent instanceof MutableTreeModel.Node) {
+            node = find(((Node) parent).value);
+        } else {
+            node = find(parent);
+        }
+
+        T nodeToReturn;
+
+        try {
+            nodeToReturn = unwrap(node.children.get(index));
+        } catch (IndexOutOfBoundsException e) {
+            if (parent != null) {
+                nodeToReturn = unwrap(node.parentNode.children.get(index));
+            } else if (index - 1 >= 0) {
+                nodeToReturn = unwrap(node.children.get(index - 1));
+            } else {
+                throw new IndexOutOfBoundsException("Something wrong with indexes");
+            }
+        }
+
+        return nodeToReturn;
     }
 
     @Override
     public int getChildCount(Object parent) {
-        Node<T> node = find(parent);
+        Node<T> node;
+
+        if (parent instanceof MutableTreeModel.Node) {
+            node = find(((Node) parent).value);
+        } else {
+            node = find(parent);
+        }
+
         return node.children.size();
     }
 
     @Override
     public boolean isLeaf(Object object) {
         Node<T> node = find(object);
+
         return node.children.isEmpty();
     }
 
@@ -265,35 +378,31 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
     }
 
     private IChildrenExtractor<T> noChildrenExtractor() {
-        return new IChildrenExtractor<T>() {
-
-            @Override
-            public List<? extends T> getChildren(T parent) {
-                return Collections.emptyList();
-            }
-        };
+        return parent -> Collections.emptyList();
     }
 
-    private void add(Node<T> parent, Integer position, List<Node<T>> children,
-            IChildrenExtractor<T> extractor) {
-        if (children.isEmpty()) {
+    private void add(Node<T> parent, Integer position, List<Node<T>> children, IChildrenExtractor<T> extractor) {
+        if ( children.isEmpty() ) {
             return;
         }
+
         int indexFrom = position == null ? parent.children.size() : position;
         int indexTo = indexFrom + children.size() - 1;
         addWithoutSendingEvents(parent, position, children, extractor);
-        fireEvent(unwrap(parent), indexFrom, indexTo,
-                TreeDataEvent.INTERVAL_ADDED);
+        fireEvent(TreeDataEvent.INTERVAL_ADDED, getPath(parent), indexFrom, indexTo);
     }
 
-    private void addWithoutSendingEvents(Node<T> parent, Integer position,
-            List<Node<T>> children, IChildrenExtractor<T> extractor) {
+    private void addWithoutSendingEvents(Node<T> parent,
+                                         Integer position,
+                                         List<Node<T>> children,
+                                         IChildrenExtractor<T> extractor) {
+
         parent.addAll(position, children);
         addToNodesAndDomainMapping(children);
+
         for (Node<T> each : children) {
             T value = each.value;
-            addWithoutSendingEvents(each, 0,
-                    wrap(extractor.getChildren(value)), extractor);
+            addWithoutSendingEvents(each, 0, wrap(extractor.getChildren(value)), extractor);
         }
     }
 
@@ -304,7 +413,7 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
     }
 
     public void add(T parent, T child) {
-        ArrayList<T> children = new ArrayList<T>();
+        ArrayList<T> children = new ArrayList<>();
         children.add(child);
         add(parent, children);
     }
@@ -314,7 +423,7 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
         T parent = getParent(object);
         Node<T> parentNode = find(parent);
         int position = parentNode.getIndexOf(node);
-        fireEvent(parent, position, position, TreeDataEvent.CONTENTS_CHANGED);
+        fireEvent(TreeDataEvent.CONTENTS_CHANGED,getPath(parent), position, position);
     }
 
     public void add(T parent, int position, Collection<? extends T> children) {
@@ -326,64 +435,64 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
         add(parentNode, null, wrap(children));
     }
 
-    public void add(T parent, int position, Collection<? extends T> children,
-            IChildrenExtractor<T> childrenExtractor) {
+    public void add(T parent, int position, Collection<? extends T> children, IChildrenExtractor<T> childrenExtractor) {
         add(find(parent), position, wrap(children), childrenExtractor);
     }
 
-    public void add(T parent, Collection<? extends T> children,
-            IChildrenExtractor<T> childrenExtractor) {
+    public void add(T parent, Collection<? extends T> children, IChildrenExtractor<T> childrenExtractor) {
         add(find(parent), null, wrap(children), childrenExtractor);
     }
 
     public void remove(T node) {
         Node<T> found = find(node);
-        if (found.isRoot()) {
-            throw new IllegalArgumentException(node
-                    + " is root. It can't be removed");
+
+        if ( found.isRoot() ) {
+            throw new IllegalArgumentException(node + " is root. It can't be removed");
         }
+
         int positionInParent = found.remove();
         nodesByDomainObject.remove(node);
-        fireEvent(unwrap(found.parentNode), positionInParent, positionInParent,
-                TreeDataEvent.INTERVAL_REMOVED);
+        fireEvent(TreeDataEvent.INTERVAL_REMOVED, getPath(found.parentNode), positionInParent, positionInParent);
     }
 
     public T getParent(T node) {
         Node<T> associatedNode = find(node);
-        if (associatedNode.equals(root)) {
+        if ( associatedNode.equals(root) ) {
             throw new IllegalArgumentException(node + " is root");
         }
+
         return unwrap(associatedNode.getParent());
     }
 
     public List<T> getParents(T node) {
-        ArrayList<T> result = new ArrayList<T>();
+        ArrayList<T> result = new ArrayList<>();
+
         try {
             T current = node;
-            while (!isRoot(current)) {
+
+            while ( !isRoot(current) ) {
                 current = getParent(current);
                 result.add(current);
             }
         } catch (Exception e) {
             LOG.error("Trying to get the parent of a removed node", e);
         }
+
         return result;
     }
 
     public boolean isRoot(T node) {
-        Node<T> associatedNode = find(node);
-        return associatedNode.isRoot();
+        return find(node).isRoot();
     }
 
-    public void replace(T nodeToRemove, T nodeToAdd,
-            IChildrenExtractor<T> childrenExtractor) {
+    public void replace(T nodeToRemove, T nodeToAdd, IChildrenExtractor<T> childrenExtractor) {
         T parent = getParent(nodeToRemove);
         Node<T> parentNode = find(parent);
         final int insertionPosition = parentNode.getIndexOf(find(nodeToRemove));
         remove(nodeToRemove);
-        if (childrenExtractor != null) {
-            add(parent, insertionPosition,
-                    Collections.singletonList(nodeToAdd), childrenExtractor);
+
+        if ( childrenExtractor != null ) {
+            add(parent, insertionPosition, Collections.singletonList(nodeToAdd), childrenExtractor);
         } else {
             add(parent, insertionPosition, Collections.singletonList(nodeToAdd));
         }
@@ -397,7 +506,8 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
         T parent = getParent(node);
         Node<T> parentNode = find(parent);
         int[] changed = parentNode.down(find(node));
-        if (changed.length != 0) {
+
+        if ( changed.length != 0 ) {
             fireRecreationOfInterval(parentNode, changed[0], changed[1]);
         }
     }
@@ -406,27 +516,21 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
         T parent = getParent(node);
         Node<T> parentNode = find(parent);
         int[] changed = parentNode.up(find(node));
-        if (changed.length != 0) {
+
+        if ( changed.length != 0 ) {
             fireRecreationOfInterval(parentNode, changed[0], changed[1]);
         }
     }
 
-    private void fireRecreationOfInterval(Node<T> parentNode, int start,
-            int endInclusive) {
-        fireEvent(parentNode.value, start, endInclusive,
-                TreeDataEvent.INTERVAL_REMOVED);
-        fireEvent(parentNode.value, start, endInclusive,
-                TreeDataEvent.INTERVAL_ADDED);
+    private void fireRecreationOfInterval(Node<T> parentNode, int start, int endInclusive) {
+        fireEvent(TreeDataEvent.INTERVAL_REMOVED,getPath(parentNode.value), start, endInclusive);
+        fireEvent(TreeDataEvent.INTERVAL_ADDED, getPath(parentNode.value), start, endInclusive);
     }
 
     public boolean isEmpty() {
         return getChildCount(getRoot()) == 0;
     }
 
-    public boolean hasChildren(T node) {
-        return getChildCount(node) > 0;
-    }
-
     public boolean contains(T object) {
         return find(object) != null;
     }
@@ -435,21 +539,25 @@ public class MutableTreeModel<T> extends AbstractTreeModel {
         Node<T> parentNode = find(parent);
         Node<T> childNode = find(child);
 
-        return parentNode != null && childNode != null
-                && childNode.getParent() != null
-                && childNode.getParent().equals(parentNode);
+        return parentNode != null &&
+                childNode != null &&
+                childNode.getParent() != null &&
+                childNode.getParent().equals(parentNode);
     }
 
     public List<T> asList() {
-        List<T> result = new ArrayList<T>();
+        List<T> result = new ArrayList<>();
         asList(getRoot(), result);
+
         return result;
     }
 
     private void asList(T root, List<T> result) {
-        List<T> list = new ArrayList<T>();
+        List<T> list = new ArrayList<>();
+
         for (int i = 0; i < getChildCount(root); i++) {
             final T child = getChild(root, i);
+
             list.add(child);
             result.add(child);
         }

ganttzk/src/main/java/org/zkoss/ganttz/util/WeakReferencedListeners.java

@@ -37,18 +37,19 @@ public class WeakReferencedListeners<T> {
 
     }
 
+    private LinkedList<WeakReference<T>> listeners = new LinkedList<>();
+
+    private List<IListenerNotification<? super T>> pendingOfNotification = new ArrayList<>();
+
+    private WeakReferencedListeners() {}
+
     public static <T> WeakReferencedListeners<T> create() {
         return new WeakReferencedListeners<>();
     }
 
-    private LinkedList<WeakReference<T>> listeners = new LinkedList<>();
-
-    private WeakReferencedListeners() {
-
-    }
-
     public enum Mode {
-        RECEIVE_PENDING, FROM_NOW_ON;
+        RECEIVE_PENDING,
+        FROM_NOW_ON
     }
 
     public void addListener(T listener) {
@@ -61,11 +62,9 @@ public class WeakReferencedListeners<T> {
         if ( getActiveListeners().isEmpty() && mode == Mode.RECEIVE_PENDING ) {
             notifyPendingOfNotificationTo(listener);
         }
-        listeners.add(new WeakReference<T>(listener));
+        listeners.add(new WeakReference<>(listener));
     }
 
-    private List<IListenerNotification<? super T>> pendingOfNotification = new ArrayList<>();
-
     private void notifyPendingOfNotificationTo(T listener) {
         for (IListenerNotification<? super T> each : pendingOfNotification) {
             each.doNotify(listener);

ganttzk/src/main/resources/metainfo/zk/lang-addon.xml

@@ -4,8 +4,7 @@
     <addon-name>ganttz</addon-name>
     <language-name>xul/html</language-name>
 
-    <!-- When the version is changed, the browser will reload the
-        JavaScript modules. -->
+    <!-- When the version is changed, the browser will reload the JavaScript modules -->
     <javascript-module name="ganttz" version="1.6.0" />
     <javascript-module name="ganttz.resourceload" version="1.6.0" />
     <javascript-module name="common" version="1.6.0" />
@@ -22,22 +21,18 @@
         <component-class>org.zkoss.ganttz.Planner</component-class>
         <widget-class>ganttz.Planner</widget-class>
         <macro-uri>~./ganttz/zul/plannerLayout.zul</macro-uri>
-        <!-- mold>
-            <mold-name>default</mold-name>
-            <mold-uri>~./ganttz/planner.dsp</mold-uri>
-        </mold -->
     </component>
 
     <component>
-       <component-name>tabSwitcher</component-name>
-       <component-class>org.zkoss.ganttz.TabSwitcher</component-class>
-       <macro-uri>~./ganttz/zul/tabSwitcher.zul</macro-uri>
+        <component-name>tabSwitcher</component-name>
+        <component-class>org.zkoss.ganttz.TabSwitcher</component-class>
+        <macro-uri>~./ganttz/zul/tabSwitcher.zul</macro-uri>
     </component>
 
     <component>
         <component-name>resourcesLoadPanel</component-name>
         <component-class>org.zkoss.ganttz.resourceload.ResourcesLoadPanel</component-class>
-            <macro-uri>~./ganttz/zul/resourcesLoadLayout.zul</macro-uri>
+        <macro-uri>~./ganttz/zul/resourcesLoadLayout.zul</macro-uri>
     </component>
 
     <component>
@@ -47,7 +42,6 @@
         <mold>
             <mold-name>default</mold-name>
             <mold-uri>mold/resource-load-list.js</mold-uri>
-            <!-- <mold-uri>~./ganttz/resourceload/resourceloadlist.dsp</mold-uri> -->
         </mold>
     </component>
 
@@ -76,20 +70,17 @@
         <widget-class>ganttz.GanttPanel</widget-class>
         <mold>
             <mold-name>default</mold-name>
-            <!-- <mold-uri>~./ganttz/ganttpanel.dsp</mold-uri> -->
             <mold-uri>mold/gantt-panel.js</mold-uri>
         </mold>
     </component>
 
     <component>
         <component-name>resourceload</component-name>
-        <component-class>org.zkoss.ganttz.resourceload.ResourceLoadComponent
-        </component-class>
+        <component-class>org.zkoss.ganttz.resourceload.ResourceLoadComponent</component-class>
         <widget-class>ganttz.resourceload.ResourceLoadComponent</widget-class>
         <mold>
             <mold-name>default</mold-name>
             <mold-uri>mold/resource-load-component.js</mold-uri>
-            <!-- <mold-uri>~./ganttz/resourceload/resourceload.dsp</mold-uri> -->
         </mold>
     </component>
 
@@ -100,7 +91,6 @@
         <widget-class>ganttz.TaskRow</widget-class>
         <mold>
             <mold-name>default</mold-name>
-            <!-- <mold-uri>~./ganttz/row.dsp</mold-uri> -->
             <mold-uri>mold/task-row.js</mold-uri>
         </mold>
     </component>
@@ -111,7 +101,6 @@
         <widget-class>ganttz.TaskComponent</widget-class>
         <mold>
             <mold-name>default</mold-name>
-            <!-- <mold-uri>~./ganttz/task.dsp</mold-uri> -->
             <mold-uri>mold/task-component.js</mold-uri>
         </mold>
     </component>
@@ -122,21 +111,17 @@
         <widget-class>ganttz.Milestone</widget-class>
         <mold>
             <mold-name>default</mold-name>
-            <!-- <mold-uri>~./ganttz/milestone.dsp</mold-uri> -->
             <mold-uri>mold/milestone.js</mold-uri>
         </mold>
     </component>
 
-
     <component>
         <component-name>taskcontainer</component-name>
-        <component-class>org.zkoss.ganttz.TaskContainerComponent
-        </component-class>
+        <component-class>org.zkoss.ganttz.TaskContainerComponent</component-class>
         <widget-class>ganttz.TaskContainerComponent</widget-class>
         <mold>
             <mold-name>default</mold-name>
             <mold-uri>mold/task-container.js</mold-uri>
-            <!-- <mold-uri>~./ganttz/taskcontainer.dsp</mold-uri> -->
         </mold>
     </component>
 
@@ -146,7 +131,6 @@
         <widget-class>ganttz.TaskList</widget-class>
         <mold>
             <mold-name>default</mold-name>
-            <!-- <mold-uri>~./ganttz/tasklist.dsp</mold-uri> -->
             <mold-uri>mold/task-list.js</mold-uri>
         </mold>
     </component>
@@ -157,24 +141,20 @@
         <widget-class>ganttz.DependencyList</widget-class>
         <mold>
             <mold-name>default</mold-name>
-            <!-- <mold-uri>~./ganttz/dependencylist.dsp</mold-uri> -->
             <mold-uri>mold/dependency-list.js</mold-uri>
         </mold>
     </component>
 
     <component>
         <component-name>dependency</component-name>
-        <component-class>org.zkoss.ganttz.DependencyComponent
-        </component-class>
+        <component-class>org.zkoss.ganttz.DependencyComponent</component-class>
         <widget-class>ganttz.DependencyComponent</widget-class>
         <mold>
             <mold-name>default</mold-name>
             <mold-uri>mold/dependency-component.js</mold-uri>
-            <!-- <mold-uri>~./ganttz/dependency.dsp</mold-uri> -->
         </mold>
     </component>
 
-
     <component>
         <component-name>timetracker</component-name>
         <component-class>org.zkoss.ganttz.timetracker.TimeTrackerComponent</component-class>
@@ -183,9 +163,9 @@
     </component>
 
     <component>
-       <component-name>timeTrackedTable</component-name>
-       <component-class>org.zkoss.ganttz.timetracker.TimeTrackedTable</component-class>
-       <macro-uri>~./ganttz/zul/timetracker/timetrackedtable.zul</macro-uri>
+        <component-name>timeTrackedTable</component-name>
+        <component-class>org.zkoss.ganttz.timetracker.TimeTrackedTable</component-class>
+        <macro-uri>~./ganttz/zul/timetracker/timetrackedtable.zul</macro-uri>
     </component>
 
 </language-addon>

ganttzk/src/main/resources/web/css/jqplot/jquery.jqplot.min.css

@@ -0,0 +1 @@
+.jqplot-target{position:relative;color:#666;font-family:"Trebuchet MS",Arial,Helvetica,sans-serif;font-size:1em;}.jqplot-axis{font-size:.75em;}.jqplot-xaxis{margin-top:10px;}.jqplot-x2axis{margin-bottom:10px;}.jqplot-yaxis{margin-right:10px;}.jqplot-y2axis,.jqplot-y3axis,.jqplot-y4axis,.jqplot-y5axis,.jqplot-y6axis,.jqplot-y7axis,.jqplot-y8axis,.jqplot-y9axis,.jqplot-yMidAxis{margin-left:10px;margin-right:10px;}.jqplot-axis-tick,.jqplot-xaxis-tick,.jqplot-yaxis-tick,.jqplot-x2axis-tick,.jqplot-y2axis-tick,.jqplot-y3axis-tick,.jqplot-y4axis-tick,.jqplot-y5axis-tick,.jqplot-y6axis-tick,.jqplot-y7axis-tick,.jqplot-y8axis-tick,.jqplot-y9axis-tick,.jqplot-yMidAxis-tick{position:absolute;white-space:pre;}.jqplot-xaxis-tick{top:0;left:15px;vertical-align:top;}.jqplot-x2axis-tick{bottom:0;left:15px;vertical-align:bottom;}.jqplot-yaxis-tick{right:0;top:15px;text-align:right;}.jqplot-yaxis-tick.jqplot-breakTick{right:-20px;margin-right:0;padding:1px 5px 1px 5px;z-index:2;font-size:1.5em;}.jqplot-y2axis-tick,.jqplot-y3axis-tick,.jqplot-y4axis-tick,.jqplot-y5axis-tick,.jqplot-y6axis-tick,.jqplot-y7axis-tick,.jqplot-y8axis-tick,.jqplot-y9axis-tick{left:0;top:15px;text-align:left;}.jqplot-yMidAxis-tick{text-align:center;white-space:nowrap;}.jqplot-xaxis-label{margin-top:10px;font-size:11pt;position:absolute;}.jqplot-x2axis-label{margin-bottom:10px;font-size:11pt;position:absolute;}.jqplot-yaxis-label{margin-right:10px;font-size:11pt;position:absolute;}.jqplot-yMidAxis-label{font-size:11pt;position:absolute;}.jqplot-y2axis-label,.jqplot-y3axis-label,.jqplot-y4axis-label,.jqplot-y5axis-label,.jqplot-y6axis-label,.jqplot-y7axis-label,.jqplot-y8axis-label,.jqplot-y9axis-label{font-size:11pt;margin-left:10px;position:absolute;}.jqplot-meterGauge-tick{font-size:.75em;color:#999;}.jqplot-meterGauge-label{font-size:1em;color:#999;}table.jqplot-table-legend{margin-top:12px;margin-bottom:12px;margin-left:12px;margin-right:12px;}table.jqplot-table-legend,table.jqplot-cursor-legend{background-color:rgba(255,255,255,0.6);border:1px solid #ccc;position:absolute;font-size:.75em;}td.jqplot-table-legend{vertical-align:middle;}td.jqplot-seriesToggle:hover,td.jqplot-seriesToggle:active{cursor:pointer;}.jqplot-table-legend .jqplot-series-hidden{text-decoration:line-through;}div.jqplot-table-legend-swatch-outline{border:1px solid #ccc;padding:1px;}div.jqplot-table-legend-swatch{width:0;height:0;border-top-width:5px;border-bottom-width:5px;border-left-width:6px;border-right-width:6px;border-top-style:solid;border-bottom-style:solid;border-left-style:solid;border-right-style:solid;}.jqplot-title{top:0;left:0;padding-bottom:.5em;font-size:1.2em;}table.jqplot-cursor-tooltip{border:1px solid #ccc;font-size:.75em;}.jqplot-cursor-tooltip{border:1px solid #ccc;font-size:.75em;white-space:nowrap;background:rgba(208,208,208,0.5);padding:1px;}.jqplot-highlighter-tooltip,.jqplot-canvasOverlay-tooltip{border:1px solid #ccc;font-size:.75em;white-space:nowrap;background:rgba(208,208,208,0.5);padding:1px;}.jqplot-point-label{font-size:.75em;z-index:2;}td.jqplot-cursor-legend-swatch{vertical-align:middle;text-align:center;}div.jqplot-cursor-legend-swatch{width:1.2em;height:.7em;}.jqplot-error{text-align:center;}.jqplot-error-message{position:relative;top:46%;display:inline-block;}div.jqplot-bubble-label{font-size:.8em;padding-left:2px;padding-right:2px;color:rgb(20%,20%,20%);}div.jqplot-bubble-label.jqplot-bubble-label-highlight{background:rgba(90%,90%,90%,0.7);}div.jqplot-noData-container{text-align:center;background-color:rgba(96%,96%,96%,0.3);}

ganttzk/src/main/resources/web/ganttz/resourceload/leftPane.zul

@@ -20,10 +20,10 @@
 -->
 
 <zk>
-<zscript><![CDATA[
-top = self;
-]]>
-</zscript>
-<tree id="loadsTree" sclass="resourceloadleftpane" fixedLayout="true">
-</tree>
+    <zscript>
+        <![CDATA[
+        top = self;
+    ]]>
+    </zscript>
+    <tree id="loadsTree" sclass="resourceloadleftpane" fixedLayout="true"/>
 </zk>

ganttzk/src/main/resources/web/ganttz/zul/leftPane.zul

@@ -20,6 +20,5 @@
 -->
 
 <zk>
-    <div id="listdetails_container">
-    </div>
+    <div id="listdetails_container"/>
 </zk>

ganttzk/src/main/resources/web/ganttz/zul/leftTasksTree.zul

@@ -20,15 +20,15 @@
 -->
 
 <?xel-method prefix="ganttzk_i18n" name="_" class="org.zkoss.ganttz.i18n.I18nHelper"
-    signature="java.lang.String _(java.lang.String name)" ?>
+        signature="java.lang.String _(java.lang.String name)" ?>
 
 <div>
-<tree id="tasksTree" fixedLayout="true" sclass="taskTreeCols">
-    <treecols sizable="false" height="33px">
-        <treecol label="${ganttzk_i18n:_('Name')}" sclass="tree-text" />
-        <treecol label="${ganttzk_i18n:_('Start')}" width="60px" />
-        <treecol label="${ganttzk_i18n:_('End')}" width="60px" />
-        <treecol label="${ganttzk_i18n:_('T / M')}" width="55px" />
-    </treecols>
-</tree>
+    <tree id="tasksTree" fixedLayout="true" sclass="taskTreeCols" hflex="1" >
+        <treecols sizable="false" height="33px">
+            <treecol label="${ganttzk_i18n:_('Name')}" sclass="tree-text" />
+            <treecol label="${ganttzk_i18n:_('Start')}" width="60px" />
+            <treecol label="${ganttzk_i18n:_('End')}" width="60px" />
+            <treecol label="${ganttzk_i18n:_('T / M')}" width="55px" />
+        </treecols>
+    </tree>
 </div>

ganttzk/src/main/resources/web/ganttz/zul/leftTasksTreeRow.zul

@@ -20,20 +20,20 @@
 -->
 
 <treerow sclass="taskdetail_grid">
-    <zscript><![CDATA[
-    ]]>
-</zscript>
-    <treecell>
+    <treecell hflex="min">
         <textbox ctrlKeys="#down#up" hflex="1" sclass="task-name" />
     </treecell>
+
     <treecell>
         <textbox value="" ctrlKeys="#down#up"  />
     </treecell>
+
     <treecell>
         <textbox value="" ctrlKeys="#down#up"  />
     </treecell>
+
     <treecell>
-        <hlayout class="projectstatus-layout">
+        <hlayout sclass="projectstatus-layout">
             <div />
             <label>/</label>
             <div />

ganttzk/src/main/resources/web/ganttz/zul/leftTasksTreeRowLabels.zul

@@ -20,20 +20,21 @@
 -->
 
 <treerow sclass="taskdetail_grid taskdetail-company-view">
-    <zscript><![CDATA[
-    ]]>
-</zscript>
+
     <treecell>
-        <label class="task_title"/>
+        <label sclass="task_title"/>
     </treecell>
+
     <treecell>
-        <label class="order-startdate" />
+        <label sclass="order-startdate" />
     </treecell>
+
     <treecell>
-        <label class="order-enddate" />
+        <label sclass="order-enddate" />
     </treecell>
+
     <treecell>
-        <hlayout class="projectstatus-layout">
+        <hlayout sclass="projectstatus-layout">
             <div />
             <label>/</label>
             <div />

ganttzk/src/main/resources/web/ganttz/zul/plannerLayout.zul

@@ -18,108 +18,127 @@
   You should have received a copy of the GNU Affero General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 -->
-<zk xmlns:n="http://www.zkoss.org/2005/zk/native">
-<?component name="button" extends="button" mold="trendy"?>
-<?xel-method prefix="ganttzk_i18n" name="_" class="org.zkoss.ganttz.i18n.I18nHelper"
-    signature="java.lang.String _(java.lang.String name)" ?>
-<zscript><![CDATA[
-planner = self;
-]]>
-</zscript>
+<zk>
+    <?component name="button" extends="button" mold="trendy"?>
+    <?xel-method prefix="ganttzk_i18n" name="_" class="org.zkoss.ganttz.i18n.I18nHelper"
+            signature="java.lang.String _(java.lang.String name)" ?>
+
+    <zscript>
+        <![CDATA[
+            planner = self;
+        ]]>
+    </zscript>
+
     <borderlayout sclass="plannerlayout" width="auto">
-       <north height="30px" border="0" sclass="toolbar-box">
-       <hbox align="center" id="toolbar">
+        <north height="30px" border="0" sclass="toolbar-box">
+            <hbox align="center" id="toolbar" sclass="filtering-area">
 
-        <separator/>
-        <!--  Commands -->
+                <separator/>
 
-        <button onClick="planner.invalidate()"
-            image="/common/img/ico_refresh.png"
-            tooltiptext="${ganttzk_i18n:_('Refresh')}" visible="false" />
+                <!--  Commands -->
 
-        <hbox id="plannerButtonsInsertionPoint" />
+                <button onClick="planner.invalidate()"
+                        image="/common/img/ico_refresh.png"
+                        tooltiptext="${ganttzk_i18n:_('Refresh')}" visible="false" />
 
-        <button id="btnPrint" onClick="planner.print()"
-            image="/common/img/ico_print.png"
-            tooltiptext="${ganttzk_i18n:_('Print')}" />
-        <separator/>
+                <hbox id="plannerButtonsInsertionPoint" />
 
-        <!--  Visualization modes -->
-        <space bar="true" />
-        <label>${ganttzk_i18n:_('Zoom')}:</label>
-        <listbox id="listZoomLevels" mold="select" rows="1"
-            model="${planner.zoomLevels}">
-        </listbox>
+                <button id="btnPrint" onClick="planner.print()"
+                        image="/common/img/ico_print.png"
+                        style="background: none; box-shadow: none;"
+                        tooltiptext="${ganttzk_i18n:_('Print')}" />
+                <separator/>
 
-        <!-- Progress type -->
+                <!--  Visualization modes -->
+                <space bar="true" />
+                <label>${ganttzk_i18n:_('Zoom')}:</label>
+                <listbox id="listZoomLevels" mold="select" rows="1" model="${planner.zoomLevels}">
+                </listbox>
 
-        <button id="showCriticalPath" onClick="planner.showCriticalPath();"
-            image="/common/img/ico_criticalpath.png"
-            tooltiptext="${ganttzk_i18n:_('Show/Hide critical path')}" />
-        <button id="showAllLabels" onClick="planner.showAllLabels();"
-            image="/common/img/ico_labels.png"
-            tooltiptext="${ganttzk_i18n:_('Show/Hide labels')}" sclass="planner-command show-labels" />
-        <button id="showAllResources" onClick="planner.showAllResources();"
-            image="/common/img/ico_resources.png"
-            tooltiptext="${ganttzk_i18n:_('Show/Hide resources')}" sclass="planner-command show-resources" />
-        <button id="expandAll" onClick="planner.expandAll();"
-            image="/common/img/ico_expand.png"
-            tooltiptext="${ganttzk_i18n:_('Expand/Collapse all')}"
-            sclass="planner-command" />
-        <button id="flattenTree" onClick="planner.flattenTree();"
-            image="/common/img/ico_flatten.png"
-            tooltiptext="${ganttzk_i18n:_('Flatten/Unflatten tree')}"
-            sclass="planner-command" />
+                <!-- Progress type -->
 
-        <hbox class="show-advances" align="center">
-            <button id="showAdvances" onClick="planner.showAdvances();"
-                image="/common/img/ico_progress.png"
-                style="width:46px"
-                tooltiptext="${ganttzk_i18n:_('Show/Hide progress')}"
-                sclass="planner-command" />
-            <combobox id="cbProgressTypes" width="1px" visible="false" sclass="progress-types"/>
-        </hbox>
+                <button id="showCriticalPath" onClick="planner.showCriticalPath();"
+                        image="/common/img/ico_criticalpath.png"
+                        tooltiptext="${ganttzk_i18n:_('Show/Hide critical path')}" />
 
-        <button id="showReportedHours" onClick="planner.showReportedHours();"
-            image="/common/img/ico_costs.png"
-            tooltiptext="${ganttzk_i18n:_('Show/Hide reported hours')}"
-            sclass="planner-command"/>
-        <separator />
+                <button id="showAllLabels" onClick="planner.showAllLabels();"
+                        image="/common/img/ico_labels.png"
+                        tooltiptext="${ganttzk_i18n:_('Show/Hide labels')}" sclass="planner-command show-labels" />
 
-        <button id="showMoneyCostBar" onClick="planner.showMoneyCostBar();"
-            image="/common/img/ico_money_cost_bar.png"
-            tooltiptext="${ganttzk_i18n:_('Show/Hide money cost bar')}"
-            sclass="planner-command"/>
-        <separator />
+                <button id="showAllResources" onClick="planner.showAllResources();"
+                        image="/common/img/ico_resources.png"
+                        tooltiptext="${ganttzk_i18n:_('Show/Hide resources')}"
+                        sclass="planner-command show-resources" />
 
-        <!--  Filtering -->
-        <vbox id="orderFilter"/>
-        <vbox id="orderElementFilter"/>
-        <separator />
+                <button id="expandAll" onClick="planner.expandAll();"
+                        image="/common/img/ico_expand.png"
+                        tooltiptext="${ganttzk_i18n:_('Expand/Collapse all')}"
+                        sclass="planner-command" />
 
-       </hbox>
-       </north>
+                <button id="flattenTree" onClick="planner.flattenTree();"
+                        image="/common/img/ico_flatten.png"
+                        tooltiptext="${ganttzk_i18n:_('Flatten/Unflatten tree')}"
+                        sclass="planner-command" />
+
+                <hbox class="show-advances" align="center">
+                    <button id="showAdvances" onClick="planner.showAdvances();"
+                            image="/common/img/ico_progress.png"
+                            style="width:46px; margin-right: -5px;"
+                            tooltiptext="${ganttzk_i18n:_('Show/Hide progress')}"
+                            sclass="planner-command" />
+
+                    <combobox id="cbProgressTypes" width="1px" visible="false" sclass="progress-types"/>
+                </hbox>
+
+                <button id="showReportedHours" onClick="planner.showReportedHours();"
+                        image="/common/img/ico_costs.png"
+                        tooltiptext="${ganttzk_i18n:_('Show/Hide reported hours')}"
+                        sclass="planner-command"/>
+                <separator />
+
+                <button id="showMoneyCostBar" onClick="planner.showMoneyCostBar();"
+                        image="/common/img/ico_money_cost_bar.png"
+                        tooltiptext="${ganttzk_i18n:_('Show/Hide money cost bar')}"
+                        sclass="planner-command"/>
+                <separator />
+
+                <!--  Filtering -->
+                <vbox id="orderFilter"/>
+                <vbox id="orderElementFilter"/>
+                <separator />
+
+            </hbox>
+        </north>
 
         <center border="0">
             <borderlayout sclass="plannerlayout_center" height="100%">
-                <west flex="false" collapsible="true" splittable="true" width="375px"
-                    id="taskdetailsContainer" sclass="taskdetailsContainer">
-                            <div sclass="leftpanelgap" id="insertionPointLeftPanel"></div>
+                <west id="taskdetailsContainer"
+                      vflex="0" collapsible="true" splittable="true" width="375px"
+                      sclass="taskdetailsContainer">
+
+                    <div sclass="leftpanelgap" id="insertionPointLeftPanel"/>
                 </west>
-                <center sclass="taskspanel">
+
+                <center sclass="taskspanel" >
                     <borderlayout>
-                        <north border="0"><div sclass="timetrackergap" id="insertionPointTimetracker"></div></north>
-                        <center autoscroll="true" border="0" sclass="rightpanellayout">
-                            <div id="insertionPointRightPanel" sclass="taskspanelgap"></div>
+                        <north border="0" height="32px" vflex="min" >
+                            <div sclass="timetrackergap" id="insertionPointTimetracker"/>
+                        </north>
+
+                        <center autoscroll="true" border="0" sclass="rightpanel-layout">
+                            <div id="insertionPointRightPanel" sclass="taskspanel-gap"/>
                         </center>
                     </borderlayout>
 
                 </center>
             </borderlayout>
         </center>
-        <south collapsible="true" title="${ganttzk_i18n:_('Graphics')}" sclass="scheduling-graphics"
-            id="graphics" onOpen="planner.changeChartVisibility(event.open);" height="200px">
-            <div id="insertionPointChart" />
+
+        <south height="200px" collapsible="true" title="${ganttzk_i18n:_('Graphics')}"
+               sclass="scheduling-graphics" id="graphics"
+               onOpen="planner.changeChartVisibility(event.open);" >
+
+            <div id="insertionPointChart"/>
         </south>
     </borderlayout>
 </zk>

ganttzk/src/main/resources/web/ganttz/zul/resourcesLoadLayout.zul

@@ -20,76 +20,90 @@
 -->
 
 <?xel-method prefix="ganttzk_i18n" name="_" class="org.zkoss.ganttz.i18n.I18nHelper"
-    signature="java.lang.String _(java.lang.String name)" ?>
+        signature="java.lang.String _(java.lang.String name)" ?>
 
-<zk xmlns:n="http://www.zkoss.org/2005/zk/native" height="100%">
-<zscript><![CDATA[
-resourcesLoadPanel = self;
-]]>
-</zscript>
+<zk>
+    <zscript>
+        <![CDATA[
+            resourcesLoadPanel = self;
+        ]]>
+    </zscript>
 
-    <borderlayout sclass="resourcesloadlayout" width="auto" height="100%">
-       <north height="30px" border="0" sclass="toolbar-box">
-       <hbox align="center" id="toolbar" >
-        <separator height="30px"/>
-        <label>${ganttzk_i18n:_('Zoom')}:</label>
-        <listbox id="listZoomLevels" mold="select" rows="1"
-            model="${resourcesLoadPanel.zoomLevels}"
-            onSelect="resourcesLoadPanel.setZoomLevel(self.selectedItem.value);" >
-        </listbox>
-        <separator/>
-        <hbox id="additionalFilterInsertionPoint1" />
-        <separator/>
-        <label id="filterByNameLabel">${ganttzk_i18n:_('Page')}:</label>
-        <combobox id="filterByNameCombo" width="50px"
-            onChange="resourcesLoadPanel.onSelectFilterByName(self)" />
-        <separator/>
-        ${ganttzk_i18n:_('Group by')}:
-        <listbox id="listFilters" mold="select" rows="1" width="150px"
-            model="${resourcesLoadPanel.filters}"
-            selectedIndex="0"
-            onSelect="resourcesLoadPanel.setFilter(self.selectedItem.value);">
-        </listbox>
-        <separator/>
-        <hbox id="additionalFilterInsertionPoint2" />
-       </hbox>
-       </north>
+    <borderlayout id="resourcesloadlayout" sclass="resourcesloadlayout" width="auto" height="100%">
+        <north height="30px" border="0" sclass="toolbar-box">
+            <hbox align="center" id="toolbar" >
+
+                <separator height="30px"/>
+
+                <label>${ganttzk_i18n:_('Zoom')}:</label>
+
+                <listbox id="listZoomLevels" mold="select" rows="1"
+                         model="${resourcesLoadPanel.zoomLevels}"
+                         onSelect="resourcesLoadPanel.setZoomLevel(self.selectedItem.value);" />
+
+                <separator/>
+
+                <hbox id="additionalFilterInsertionPoint1" />
+
+                <separator/>
+
+                <label id="filterByNameLabel">${ganttzk_i18n:_('Page')}:</label>
+
+                <combobox id="filterByNameCombo" width="62px" onChange="resourcesLoadPanel.onSelectFilterByName(self)" />
+
+                <separator/>
+
+                ${ganttzk_i18n:_('Group by')}:
+
+                <listbox id="listFilters" mold="select" rows="1" width="150px"
+                         model="${resourcesLoadPanel.filters}"
+                         selectedIndex="0"
+                         onSelect="resourcesLoadPanel.setFilter(self.selectedItem.value);">
+                </listbox>
+                <separator/>
+                <hbox id="additionalFilterInsertionPoint2" />
+            </hbox>
+        </north>
 
         <center border="0">
-            <borderlayout sclass="resourcesload">
-                <west size="250px" flex="true" collapsible="true"
-                    splittable="true" autoscroll="false" border="0">
+            <borderlayout sclass="resources-load">
+                <west size="250px" vflex="1" hflex="min" collapsible="true"
+                      splittable="true" autoscroll="false" border="0">
                     <borderlayout>
-                        <north border="0" height="35px" flex="true" collapsible="true">
+                        <north border="0" height="35px" hflex="true" collapsible="true">
                             <vbox pack="top" align="center">
-                            <tree fixedLayout="true" hflex="true" sclass="resourceloaddetailsContainer">
-                                <treecols>
-                                    <treecol label="${ganttzk_i18n:_('Name')}" height="29px"/>
-                                </treecols>
-                            </tree>
-
+                                <tree fixedLayout="true" hflex="true" sclass="resourceload-details-container">
+                                    <treecols>
+                                        <treecol label="${ganttzk_i18n:_('Name')}" height="29px"/>
+                                    </treecols>
+                                </tree>
                             </vbox>
                         </north>
                         <center border="0" style="overflow-x:scroll">
-                            <div sclass="leftpanelgap" id="insertionPointLeftPanel"></div>
+                            <div sclass="leftpanelgap" id="insertionPointLeftPanel"/>
                         </center>
                     </borderlayout>
                 </west>
 
                 <center sclass="taskspanel">
                     <borderlayout>
-                        <north border="0"><div sclass="timetrackergap" height="30px" id="insertionPointTimetracker"></div></north>
-                        <center autoscroll="true" border="0" sclass="rightpanellayout">
-                            <div id="insertionPointRightPanel" sclass="taskspanelgap"></div>
+                        <north border="0">
+                            <div sclass="timetrackergap" height="30px" id="insertionPointTimetracker"/>
+                        </north>
+
+                        <center autoscroll="true" border="0" sclass="rightpanel-layout">
+                            <div id="insertionPointRightPanel" sclass="taskspanel-gap"/>
                         </center>
                     </borderlayout>
 
                 </center>
             </borderlayout>
         </center>
+
         <south height="200px" collapsible="true" title="${ganttzk_i18n:_('Graphics')}"
-            sclass="scheduling-graphics" id="graphics"
-            onOpen="resourcesLoadPanel.changeChartVisibility(event.open);">
+               sclass="scheduling-graphics" id="graphics"
+               onOpen="resourcesLoadPanel.changeChartVisibility(event.open);">
+
             <div id="insertionPointChart" />
         </south>
     </borderlayout>

ganttzk/src/main/resources/web/ganttz/zul/tabSwitcher.zul

@@ -20,6 +20,5 @@
 -->
 
 <zk>
-    <div id="container">
-    </div>
+    <div id="container" sclass="tabSwitcher" self="@{insert(content_tabSwitcher)}" height="100%"/>
 </zk>

ganttzk/src/main/resources/web/ganttz/zul/timetracker/secondlevelwithoutwatermark.zul

@@ -20,13 +20,11 @@
 -->
 <zk xmlns:n="http://www.zkoss.org/2005/zk/native">
 
-  <n:div class="z-grid-header">
+    <n:div class="z-grid-header">
         <n:table style="width: ${top.horizontalSize+2}px;" class="second_level_">
-
             <n:tr class="z-columns">
-                <n:td class="z-column" forEach="${top.detailsSecondLevel}"
-                style="width: ${each.size}px">
-                ${each.name}
+                <n:td class="z-column" forEach="${top.detailsSecondLevel}" style="width: ${each.size}px">
+                    ${each.name}
                 </n:td>
             </n:tr>
         </n:table>

ganttzk/src/main/resources/web/ganttz/zul/timetracker/timetrackedtable.zul

@@ -20,15 +20,16 @@
 -->
 
 <zk>
-<zscript><![CDATA[
-top = self;
-]]>
-</zscript>
-<grid width="${top.horizontalSize+2}" model="${top.tableModel}"
-    rowRenderer="${top.rowRenderer}" fixedLayout="${true}">
-    <columns visible="${false}">
-        <column label="${each.name}" width="${each.size}px"
-                    forEach="${top.detailsSecondLevel}"></column>
-    </columns>
-</grid>
+    <zscript>
+        <![CDATA[
+        top = self;
+    ]]>
+    </zscript>
+    <grid width="${top.horizontalSize+2}" model="${top.tableModel}"
+          rowRenderer="${top.rowRenderer}" fixedLayout="${true}">
+
+        <columns visible="${false}">
+            <column label="${each.name}" width="${each.size}px" forEach="${top.detailsSecondLevel}"/>
+        </columns>
+    </grid>
 </zk>

ganttzk/src/main/resources/web/ganttz/zul/timetracker/timetracker.zul

@@ -21,21 +21,21 @@
 
 <?taglib uri="http://www.zkoss.org/dsp/web/core" prefix="c"?>
 <zk xmlns:n="http://www.zkoss.org/2005/zk/native">
-<zscript><![CDATA[
-top = self;
-]]>
-</zscript>
+    <zscript>
+        <![CDATA[
+        top = self;
+    ]]>
+    </zscript>
 
-<div>
-<n:div id="${top.timeTrackerId}">
-    <vbox>
-        <grid id="firstleveldetails" width="${top.horizontalSizePixels}px;">
-            <columns>
-                <column label="${each.name}" width="${each.size}px"
-                    forEach="${top.detailsFirstLevel}"></column>
-            </columns>
-        </grid>
-    </vbox>
-</n:div>
-</div>
+    <div>
+        <n:div id="${top.timeTrackerId}">
+            <vbox>
+                <grid id="firstleveldetails" width="${top.horizontalSizePixels}px;">
+                    <columns>
+                        <column label="${each.name}" width="${each.size}px" forEach="${top.detailsFirstLevel}"/>
+                    </columns>
+                </grid>
+            </vbox>
+        </n:div>
+    </div>
 </zk>

ganttzk/src/main/resources/web/ganttz/zul/timetracker/timetrackersecondlevel.zul

@@ -25,17 +25,26 @@
 
             <n:tr class="z-columns">
                 <n:th class="z-column" forEach="${top.detailsSecondLevel}" style="width: ${each.size}px">
-                ${each.name}
+                    ${each.name}
                 </n:th>
             </n:tr>
+
             <n:tr id="watermark">
                 <n:td class="${(top.weekLevel)?'week-level':''} timetracker_column${(each.even)?'_even':''}${(each.bankHoliday?' bankHoliday':'')}"
-                    forEach="${top.detailsSecondLevel}"
-                    style="width: ${each.size}px;background-position: ${each.bankHolidayWeek}; ">
-                    <n:div if="${each.projectStart}" class="timetracker_column_start" style="background-position: ${each.projectStartOffset}px;" />
-                    <n:div if="${each.currentPeriod and !(each.deadlinePeriod)}" class="timetracker_column_today" style="background-position: ${each.currentDayOffset}px; width:auto;height:100%" />
-                    <n:div if="${each.deadlinePeriod and !(each.currentPeriod)}" class="timetracker_column_deadline" style="background-position: ${each.deadlineOffset}px; width:auto;height:100%" />
-                    <n:div if="${each.currentPeriod and each.deadlinePeriod}" class="timetracker_column_today_deadline" style="background-position: ${each.currentDayOffset}px 0, ${each.deadlineOffset}px 0; width:auto;height:100%" />
+                      forEach="${top.detailsSecondLevel}"
+                      style="width: ${each.size}px;background-position: ${each.bankHolidayWeek}; ">
+
+                    <n:div if="${each.projectStart}" class="timetracker_column_start"
+                           style="background-position: ${each.projectStartOffset}px;" />
+
+                    <n:div if="${each.currentPeriod and !(each.deadlinePeriod)}" class="timetracker_column_today"
+                           style="background-position: ${each.currentDayOffset}px; width:auto;height:100%" />
+
+                    <n:div if="${each.deadlinePeriod and !(each.currentPeriod)}" class="timetracker_column_deadline"
+                           style="background-position: ${each.deadlineOffset}px; width:auto;height:100%" />
+
+                    <n:div if="${each.currentPeriod and each.deadlinePeriod}" class="timetracker_column_today_deadline"
+                           style="background-position: ${each.currentDayOffset}px 0, ${each.deadlineOffset}px 0; width:auto;height:100%" />
                 </n:td>
             </n:tr>
         </n:table>

ganttzk/src/main/resources/web/js/common/Common.js

@@ -1,72 +1,89 @@
 zk.$package("common");
 
-common.Common = zk.$extends(zk.Widget,{},{
+common.Common = zk.$extends(
+    zk.Widget,
+    {},
+    {
+        webAppContextPath : function() {
+            return window.location.pathname.split( '/' )[1];
+        },
 
-    webAppContextPath : function(){ return window.location.pathname.split( '/' )[1];},
+        throttle : function(timeoutTimeMillis, functionToExecute) {
+            var lastTimeCalled = null;
+            var cachedResult = null;
+
+            return function() {
+                var now = Date.now();
+
+                if (lastTimeCalled !== null && ((now - lastTimeCalled) < timeoutTimeMillis)) {
+                    return cachedResult;
+                }
+
+                lastTimeCalled = now;
+                cachedResult = functionToExecute.apply(null, arguments);
 
-    throttle: function(timeoutTimeMillis, functionToExecute) {
-        var lastTimeCalled = null;
-        var cachedResult = null;
-        return function() {
-            var now = Date.now();
-            if (lastTimeCalled !== null && ((now - lastTimeCalled) < timeoutTimeMillis)) {
                 return cachedResult;
-            }
-            lastTimeCalled = now;
-            cachedResult = functionToExecute.apply(null, arguments);
-            return cachedResult;
-        };
-    },
-    /**
-     * It can be called in the constructor of a widget.
-     * It is required that the widget has the method _divsToRestoreDayInto that returns
-     * the divs which their scroll must be changed back to the previous day.
-     */
+            };
+        },
 
-// TODO: Refactoring should be done, not so many methods should be needed to synchronize the day.
-    mixInDayPositionRestorer: function(widget) {
-        if (! ('_divsToRestoreDayInto' in widget)) {
-            throw '_divsToRestoreDayInto function must be present in widget';
-        }
-        var scrollDay = 0;
         /**
-         * Scrolls horizontally the ganttpanel when the zoom has resized the component
-         * width.
+         * It can be called in the constructor of a widget.
+         * It is required that the widget has the method _divsToRestoreDayInto that returns
+         * the divs which their scroll must be changed back to the previous day.
          */
-        widget.scroll_horizontal = function(daysDisplacement) {
-            scrollDay = daysDisplacement;
-        };
-        widget.update_day_scroll = function(previousPixelPerDay) {
-            var divs = this._divsToRestoreDayInto();
-            var topScrollDiv = divs[divs.length - 1];
 
-            var maxHPosition = topScrollDiv.scrollWidth - topScrollDiv.clientWidth;
-            if (maxHPosition > 0) {
-                var proportion = topScrollDiv.scrollWidth / maxHPosition;
-                var positionInScroll = topScrollDiv.scrollLeft;
-                var positionInPx = positionInScroll * proportion;
-                if (positionInPx > 0) {
-                    scrollDay = positionInPx / previousPixelPerDay;
-                }
+        // TODO: Refactoring should be done, not so many methods should be needed to synchronize the day.
+        mixInDayPositionRestorer : function(widget) {
+            if (! ('_divsToRestoreDayInto' in widget)) {
+                throw '_divsToRestoreDayInto function must be present in widget';
             }
-        };
-        widget.move_scroll = function(diffDays, pixelPerDay) {
-            var divs = this._divsToRestoreDayInto();
-            var topScrollDiv = divs[divs.length - 1];
 
-            var day = this.scrollDay + parseInt(diffDays);
-            var newPosInPx = parseInt(day * pixelPerDay);
-            var maxHPosition = topScrollDiv.scrollWidth - topScrollDiv.clientWidth;
-            var newProportion = topScrollDiv.scrollWidth / maxHPosition;
-            if (newProportion > 0) {
-                var newPosInScroll = newPosInPx / newProportion;
-                if (newPosInScroll < 0) {
-                    newPosInScroll = 0;
+            var scrollDay = 0;
+
+            /**
+             * Scrolls horizontally the ganttPanel when the zoom has resized the component width.
+             */
+            widget.scroll_horizontal = function(daysDisplacement) {
+                scrollDay = daysDisplacement;
+            };
+
+            widget.update_day_scroll = function(previousPixelPerDay) {
+                var divs = this._divsToRestoreDayInto();
+                var topScrollDiv = divs[divs.length - 1];
+
+                var maxHPosition = topScrollDiv.scrollWidth - topScrollDiv.clientWidth;
+
+                if (maxHPosition > 0) {
+                    var proportion = topScrollDiv.scrollWidth / maxHPosition;
+                    var positionInScroll = topScrollDiv.scrollLeft;
+                    var positionInPx = positionInScroll * proportion;
+
+                    if (positionInPx > 0) {
+                        scrollDay = positionInPx / previousPixelPerDay;
+                    }
                 }
-                for ( var i = 0; i < divs.length; i++) {
-                    divs[i].scrollLeft = newPosInScroll;
+            };
+
+            widget.move_scroll = function(diffDays, pixelPerDay) {
+                var divs = this._divsToRestoreDayInto();
+                var topScrollDiv = divs[divs.length - 1];
+
+                var day = this.scrollDay + parseInt(diffDays);
+                var newPosInPx = parseInt(day * pixelPerDay);
+                var maxHPosition = topScrollDiv.scrollWidth - topScrollDiv.clientWidth;
+                var newProportion = topScrollDiv.scrollWidth / maxHPosition;
+
+                if (newProportion > 0) {
+                    var newPosInScroll = newPosInPx / newProportion;
+
+                    if (newPosInScroll < 0) {
+                        newPosInScroll = 0;
+                    }
+
+                    for ( var i = 0; i < divs.length; i++) {
+                        divs[i].scrollLeft = newPosInScroll;
+                    }
                 }
-            }
-        };
-    }
-});
+            };
+        }
+    });

ganttzk/src/main/resources/web/js/ganttz/GanttPanel.js

@@ -1,75 +1,82 @@
 zk.$package("ganttz");
 
-ganttz.GanttPanel = zk.$extends(zk.Widget,{
-    $define: {
-        xMouse : null,
-        yMouse : null
-    },
-    scrollDay: 0,
-    $init : function(){
-        this.$supers('$init', arguments);
-        this.$class.setInstance(this);
-        common.Common.mixInDayPositionRestorer(this);
-    },
-    bind_ : function(evt){
-        this.$supers('bind_', arguments);
+ganttz.GanttPanel = zk.$extends(
 
-        this._initializeProperties();
+    zk.Widget,
 
-        this.domListen_(this.$n(), 'onMousemove', '_calcXY');
-        this.domListen_(this._rightpannellayout, 'onScroll', '_listenToScroll');
-    },
-    unbind_ : function(evt){
-        this.domUnlisten_(this._rightpannellayout, 'onScroll', '_listenToScroll');
-        this.domUnlisten_(this.$n(), 'onMousemove', '_calcXY');
-        this.$supers('unbind_', arguments);
-    },
-    _divsToRestoreDayInto: function() {
-        var first = jq("#ganttpanel").get(0);
-        return [first, first.parentNode, first.parentNode.parentNode];
-    },
-    timeplotContainerRescroll : function(){
-        this._getTimeplotContainer().each(jq.proxy(function(index, element){
-            jq(element).css("left", "-" + this._rightpannellayout.scrollLeft() + "px")
+    {
+        $define: {
+            xMouse : null,
+            yMouse : null
+        },
+        scrollDay: 0,
+        $init : function() {
+            this.$supers('$init', arguments);
+            this.$class.setInstance(this);
+            common.Common.mixInDayPositionRestorer(this);
+        },
+        bind_ : function(evt) {
+            this.$supers('bind_', arguments);
+
+            this._initializeProperties();
+
+            this.domListen_(this.$n(), 'onMousemove', '_calcXY');
+            this.domListen_(this._rightpannellayout, 'onScroll', '_listenToScroll');
+        },
+        unbind_ : function(evt){
+            this.domUnlisten_(this._rightpannellayout, 'onScroll', '_listenToScroll');
+            this.domUnlisten_(this.$n(), 'onMousemove', '_calcXY');
+            this.$supers('unbind_', arguments);
+        },
+        _divsToRestoreDayInto: function() {
+            var first = jq("#ganttpanel").get(0);
+            return [first, first.parentNode, first.parentNode.parentNode];
+        },
+        timeplotContainerRescroll : function() {
+            this._getTimeplotContainer().each(jq.proxy(function(index, element){
+                jq(element).css("left", "-" + this._rightpannellayout.scrollLeft() + "px")
             }, this));
+        },
+        adjust_dimensions : function() {
+            ganttz.Planner.getInstance().adjustScrollableDimensions();
+        },
+        _calcXY : function(event) {
+            var arrPos = YAHOO.util.Event.getXY(event);
+            this.setXMouse(arrPos[0]);
+            this.setYMouse(arrPos[1]);
+        },
+        _listenToScroll : function() {
+            this._timetrackergap.css("left","-" + this._rightpannellayout.scrollLeft() + "px");
+            this._taskdetails.css("top", "-" + this._rightpannellayout.scrollTop() + "px");
+            this._plannergraph.scrollLeft( this._rightpannellayout.scrollLeft() );
+            this.timeplotContainerRescroll();
+        },
+        /*
+         * The canvas is inserted in the DOM after this component, so it's not available right now.
+         * It is queried instead.
+         * Using throttle to not re-query it constantly
+         */
+        _getTimeplotContainer: common.Common.throttle(500, function() {
+            return jq('canvas.timeplot-canvas').parent();
+        }),
+        _initializeProperties : function() {
+            this._timetrackergap = jq('.timetrackergap');
+            this._rightpannellayout = jq('.rightpanel-layout div:first');
+            this._taskdetails = jq('.listdetails .z-tree-body');
+            this._plannergraph = jq('.plannergraph:first');
+        },
+        reScrollY : function(px) {
+            jq('#ganttpanel_inner_scroller_y').height(px);
+        },
+        reScrollX : function(px){
+            jq('#ganttpanel_inner_scroller_x').width(px);
+        }
     },
-    adjust_dimensions : function(){
-        ganttz.Planner.getInstance().adjustScrollableDimensions();
-    },
-    _calcXY : function(event){
-        var arrPos = YAHOO.util.Event.getXY(event);
-        this.setXMouse(arrPos[0]);
-        this.setYMouse(arrPos[1]);
-    },
-    _listenToScroll : function(){
-        this._timetrackergap.css("left","-" + this._rightpannellayout.scrollLeft() + "px");
-        this._taskdetails.css("top", "-" + this._rightpannellayout.scrollTop() + "px");
-        this._plannergraph.scrollLeft( this._rightpannellayout.scrollLeft() );
-        this.timeplotContainerRescroll();
-    },
-    /*The canvas is inserted in the DOM after this component so
-     * it's not available right now. It is queried instead. Using throttle
-     * to not re-query it constantly */
-    _getTimeplotContainer: common.Common.throttle(500, function() {
-        return jq('canvas.timeplot-canvas').parent();
-    }),
-    _initializeProperties : function(){
-        this._timetrackergap    = jq('.timetrackergap');
-        this._rightpannellayout    = jq('.rightpanellayout div:first');
-        this._taskdetails        = jq('.listdetails .z-tree-body');
-        this._plannergraph        = jq('.plannergraph:first');
-    },
-    reScrollY : function(px){
-        jq('#ganttpanel_inner_scroller_y').height(px);
-    },
-    reScrollX : function(px){
-        jq('#ganttpanel_inner_scroller_x').width(px);
-    }
-},{
-    getInstance : function(){
-        return this._instance;
-    },
-    setInstance : function(instance){
-        this._instance = instance;
-    }
-});
+    {
+        getInstance : function() {
+            return this._instance;
+        },
+        setInstance : function(instance){
+            this._instance = instance;
+        }
+    });

ganttzk/src/main/resources/web/js/ganttz/Planner.js

@@ -1,69 +1,82 @@
 zk.$package("ganttz");
 
-ganttz.Planner = zk.$extends(zk.Macro,{
-    $init : function(){
-        this.$supers('$init', arguments);
-        this.$class.setInstance(this);
-    },
-    bind_ : function(){
-        this.$supers('bind_', arguments);
-        this.adjustScrollableDimensions();
-        //Zoomlevel selector
-        this.domListen_(jq('.plannerlayout .toolbar-box select'), 'onChange', '_zoomLevelChanged');
-        this.domListen_(jq(window), 'onResize', 'adjustWatermark');
-    },
-    unbind_ : function(){
-        this.$supers('unbind_', arguments);
-        this.domUnlisten_(jq('.plannerlayout .toolbar-box select'), 'onChange', '_zoomLevelChanged');
-    },
-    adjustScrollableDimensions : function(){
+ganttz.Planner = zk.$extends(
 
-        // Timetracker is recalculated when the window is resized and when zoom
-        // level is changed as the component is recreated
+    zk.Macro,
 
-        var DOMTimetracker = jq('#timetracker');
-        var DOMWatermark = jq('#watermark');
-        var DOMScrollContainer = jq('#scroll_container');
+    {
+        $init : function(){
+            this.$supers('$init', arguments);
+            this.$class.setInstance(this);
+        },
+        bind_ : function(){
+            this.$supers('bind_', arguments);
+            this.adjustScrollableDimensions();
 
-        DOMTimetracker.width(
+            // Zoomlevel selector
+            this.domListen_(jq('.plannerlayout .toolbar-box select'), 'onChange', '_zoomLevelChanged');
+
+            this.domListen_(jq(window), 'onResize', 'adjustWatermark');
+        },
+        unbind_ : function(){
+            this.$supers('unbind_', arguments);
+            this.domUnlisten_(jq('.plannerlayout .toolbar-box select'), 'onChange', '_zoomLevelChanged');
+        },
+        adjustScrollableDimensions : function(){
+
+            // Timetracker is recalculated when the window is resized and when zoom
+            // level is changed as the component is recreated
+
+            var DOMTimetracker = jq('#timetracker');
+            var DOMWatermark = jq('#watermark');
+            var DOMScrollContainer = jq('#scroll_container');
+
+            DOMTimetracker.width(
                 jq(window).width() -
                 this.$class.TASKDETAILS_WIDTH -
                 this.$class.SCROLLBAR_WIDTH * 2);
 
-        DOMScrollContainer.width(
-                jq('.second_level_ :first').innerWidth());
+            DOMScrollContainer.width(jq('.second_level_ :first').innerWidth());
 
-        DOMTimetracker.width(DOMScrollContainer.innerWidth());
-        this.adjustWatermark();
-        // Inner divs need recalculation to adjust to new scroll displacement lenght
-        ganttz.GanttPanel.getInstance().reScrollY(jq('#listdetails_container').height());
+            DOMTimetracker.width(DOMScrollContainer.innerWidth());
+            this.adjustWatermark();
 
-        // Inner divs need recalculation to adjust to new scroll displacement lenght
-        ganttz.GanttPanel.getInstance().reScrollX(DOMWatermark.outerWidth());
-    },
-    adjustWatermark : function() {
-    jq('#timetracker').height(
-            Math.max(
-                     jq(window).height() - this.$class.UNSCROLLABLE_AREA,
-                     jq('#scroll_container').height() + this.$class.BOTTOM_WATERMARK_PADDING,
-                     this.$class.MIN_WATERMARK_HEIGHT
+            // Inner divs need recalculation to adjust to new scroll displacement length
+            ganttz.GanttPanel.getInstance().reScrollY(jq('#listdetails_container').height());
+
+            // Inner divs need recalculation to adjust to new scroll displacement length
+            ganttz.GanttPanel.getInstance().reScrollX(DOMWatermark.outerWidth());
+        },
+        adjustWatermark : function() {
+            jq('#timetracker').height(
+                Math.max(
+                    jq(window).height() - this.$class.UNSCROLLABLE_AREA,
+                    jq('#scroll_container').height() + this.$class.BOTTOM_WATERMARK_PADDING,
+                    this.$class.MIN_WATERMARK_HEIGHT
                 ));
+        },
+        _zoomLevelChanged : function(event) {
+            var zoomindex = event.domTarget.selectedIndex;
+            var scrollLeft = parseFloat(jq('.timetrackergap').css('left').replace(/px/, ""));
+            zAu.send(new zk.Event(this, 'onZoomLevelChange', { zoomindex : zoomindex, scrollLeft : scrollLeft }));
+        }
     },
-    _zoomLevelChanged : function(event){
-        var zoomindex = event.domTarget.selectedIndex;
-        var scrollLeft = parseFloat(jq('.timetrackergap').css('left').replace(/px/, ""));
-        zAu.send(new zk.Event(this, 'onZoomLevelChange', {zoomindex : zoomindex, scrollLeft : scrollLeft}));
-    }
-},{
-    TASKDETAILS_WIDTH : 300,        // Taskdetails column fixed width (300)
-    UNSCROLLABLE_AREA : 170,        // Design-relative reservated height for taskdetails (300,260)
-    MIN_WATERMARK_HEIGHT: 440,      // Minimum vertical area for watermark
-    SCROLLBAR_WIDTH : 15,           // Scrollbars default width
-    BOTTOM_WATERMARK_PADDING : 40,  // Space left behind last task
-    getInstance : function(){
-        return this._instance;
-    },
-    setInstance : function(instance){
-        this._instance = instance;
-    }
-})
+
+    {
+        TASKDETAILS_WIDTH : 300,        // Taskdetails column fixed width (300)
+
+        UNSCROLLABLE_AREA : 170,        // Design-relative reservated height for taskdetails (300,260)
+
+        MIN_WATERMARK_HEIGHT: 440,      // Minimum vertical area for watermark
+
+        SCROLLBAR_WIDTH : 15,           // Scrollbars default width
+
+        BOTTOM_WATERMARK_PADDING : 40,  // Space left behind last task
+
+        getInstance : function() {
+            return this._instance;
+        },
+        setInstance : function(instance) {
+            this._instance = instance;
+        }
+    });

ganttzk/src/main/resources/web/js/ganttz/TaskComponent.js

@@ -1,268 +1,280 @@
 zk.$package("ganttz");
 
 /*
- * This YAHOO code is here because it's used for the Drag&Drop. Once the Drag&Drop is implemented with jQuery
- * this code must be removed
- * */
+ * This YAHOO code is here because it's used for the Drag&Drop. 
+ * Once the Drag&Drop is implemented with jQuery this code must be removed.
+ */
 YAHOO.example.DDRegion = function(id, sGroup, config) {
     this.cont = config.cont;
     YAHOO.example.DDRegion.superclass.constructor.apply(this, arguments);
 };
 
-var myDom = YAHOO.util.Dom, myEvent = YAHOO.util.Event
+var myDom = YAHOO.util.Dom, myEvent = YAHOO.util.Event;
 
 YAHOO.extend(YAHOO.example.DDRegion, YAHOO.util.DD, {
     cont : null,
     init : function() {
         // Call the parent's init method
-    YAHOO.example.DDRegion.superclass.init.apply(this, arguments);
-    this.initConstraints();
-
-    myEvent.on(window, 'resize', function() {
+        YAHOO.example.DDRegion.superclass.init.apply(this, arguments);
         this.initConstraints();
-    }, this, true);
-},
-initConstraints : function() {
 
-    // Get the top, right, bottom and left positions
-    var region = myDom.getRegion(this.cont);
+        myEvent.on(window, 'resize', function() {this.initConstraints();}, this, true);
+    },
+    initConstraints : function() {
 
-    // Get the element we are working on
-    var el = this.getEl();
+        // Get the top, right, bottom and left positions
+        var region = myDom.getRegion(this.cont);
 
-    // Get the xy position of it
-    var xy = myDom.getXY(el);
+        // Get the element we are working on
+        var el = this.getEl();
 
-    // Get the width and height
-    var width = parseInt(myDom.getStyle(el, 'width'), 10);
-    var height = parseInt(myDom.getStyle(el, 'height'), 10);
+        // Get the xy position of it
+        var xy = myDom.getXY(el);
 
-    // Set left to x minus left
-    var left = xy[0] - region.left;
+        // Get the width and height
+        var width = parseInt(myDom.getStyle(el, 'width'), 10);
+        var height = parseInt(myDom.getStyle(el, 'height'), 10);
 
-    // Set right to right minus x minus width
-    var right = region.right - xy[0] - width;
+        // Set left to x minus left
+        var left = xy[0] - region.left;
 
-    // Set top to y minus top
-    var top = xy[1] - region.top;
+        // Set right to right minus x minus width
+        var right = region.right - xy[0] - width;
 
-    // Set bottom to bottom minus y minus height
-    var bottom = region.bottom - xy[1] - height;
+        // Set top to y minus top
+        var top = xy[1] - region.top;
 
-    // Set the constraints based on the above calculations
-    this.setXConstraint(left, right);
-    this.setYConstraint(top, bottom);
-}
+        // Set bottom to bottom minus y minus height
+        var bottom = region.bottom - xy[1] - height;
+
+        // Set the constraints based on the above calculations
+        this.setXConstraint(left, right);
+        this.setYConstraint(top, bottom);
+    }
 });
 
 
-ganttz.TaskComponent = zk.$extends(zul.Widget, {
-    $define :{
-        resourcesText    : null,
-        labelsText    : null,
-        tooltipText : null,
-        left: function() {
-            this.$supers('setLeft', arguments);
-            this._getRelatedDependencies().forEach(function(dependency) {
-                dependency.draw();
-            });
-        }
-    },
-    $init : function(){
-        this.$supers('$init', arguments);
+ganttz.TaskComponent = zk.$extends(
+    zul.Widget,
+    {
+        $define :{
+            resourcesText : null,
+            labelsText : null,
+            tooltipText : null,
+            left: function() {
+                this.$supers('setLeft', arguments);
+                this._getRelatedDependencies().forEach(function(dependency) {
+                    dependency.draw();
+                });
+            }
+        },
+        $init : function(){
+            this.$supers('$init', arguments);
 
-         /*
-         * We have to implement the setLeft method because if we use the one provided by ZK
-         * the tasks won't we moved back to its original position when they are dropped on an invalid position (i.e before the end
-         * of the main task) on a dependency relation
-         *
-         * This is the default boddy for a ZK set<AttributeName>
-         *
-         * function (v, opts) {
-                if (before) v = before.apply(this, arguments);
-                var o = this[nm];
-                this[nm] = v;
-                if (after && (o !== v || (opts && opts.force)))
-                    after.apply(this, arguments);
-                return this;
-            };
-         *
-         * The before and and after properties can be set to something different to  the default using the $define property.
-         *
-         *
-         * Our problem happens because if the dependent task is already aligned at the end of the main tasks
-         * and thats (for example) style. left = 800px, when we move it to an invalid position the server will try to set again
-         * the left property to 800px but when the default setter works it checks if we are trying to set a value equal to the previous
-         * one and in that case it doesn't apply the after function.
-         *
-         * Setting the force option to true does the trick
-         * */
-        var oldSetLeft = this.setLeft;
-        this.setLeft = this.proxy(function(left, options){
-            oldSetLeft.call(this, left, {force : true});
-        })
-    },
-    bind_ : function(event){
-        this.$supers('bind_', arguments);
-        this.domListen_(this.$n(), "onMouseover", '_showTooltip');
-        this.domListen_(this.$n(), "onMouseout", '_hideTooltip');
-        if( jq(this.$n()).attr('movingtasksenabled') == "true" ) this._addDragDrop();
-        if( jq(this.$n()).attr('resizingtasksenabled') == "true" ) this._addResize();
-    },
-    unbind_ : function(event){
-        this.domUnlisten_(this.$n(), "onMouseout", '_hideTooltip');
-        this.domUnlisten_(this.$n(), "onMouseover", '_showTooltip');
-        this.$supers('unbind_', arguments);
-    },
-    addDependency : function(){
-        this._createArrow();
-    },
-    consolidateNewDependency : function(task){
-        zAu.send(new zk.Event(this, 'onAddDependency', {dependencyId : task.id}));
-    },
-    _getRelatedDependencies: function() {
-        return jq('.dependency[idtaskorig='+ this.uuid + ']')
+            /*
+             * We have to implement the setLeft method because if we use the one provided by ZK.
+             * The tasks won't we moved back to its original position when they are dropped on an invalid position 
+             * (i.e before the end of the main task) on a dependency relation.
+             *
+             * This is the default body for a ZK set<AttributeName>
+             *
+             * function (v, opts) {
+             *     if (before) v = before.apply(this, arguments);
+             *     var o = this[nm];
+             *     this[nm] = v;
+             *     
+             *     if (after && (o !== v || (opts && opts.force)))
+             *         after.apply(this, arguments);
+             *         
+             *     return this;
+             * };
+             *
+             * The before and and after properties can be set to something different 
+             * to the default using the $define property.
+             *
+             * Our problem happens because if the dependent task is already aligned at the end of the main tasks
+             * and that is (for example) style. 
+             * left = 800px, when we move it to an invalid position the server will try to set again
+             * the left property to 800px but when the default setter works, 
+             * it checks if we are trying to set a value equal to the previous
+             * one and in that case it doesn't apply the after function.
+             *
+             * Setting the force option to true does the trick
+             * */
+            var oldSetLeft = this.setLeft;
+            this.setLeft = this.proxy(function(left, options){
+                oldSetLeft.call(this, left, {force : true});
+            })
+        },
+        bind_ : function(event) {
+            this.$supers('bind_', arguments);
+            this.domListen_(this.$n(), "onMouseover", '_showTooltip');
+            this.domListen_(this.$n(), "onMouseout", '_hideTooltip');
+            if( jq(this.$n()).attr('movingtasksenabled') == "true" ) this._addDragDrop();
+            if( jq(this.$n()).attr('resizingtasksenabled') == "true" ) this._addResize();
+        },
+        unbind_ : function(event) {
+            this.domUnlisten_(this.$n(), "onMouseout", '_hideTooltip');
+            this.domUnlisten_(this.$n(), "onMouseover", '_showTooltip');
+            this.$supers('unbind_', arguments);
+        },
+        addDependency : function() {
+            this._createArrow();
+        },
+        consolidateNewDependency : function(task) {
+            zAu.send(new zk.Event(this, 'onAddDependency', {dependencyId : task.id}));
+        },
+        _getRelatedDependencies: function() {
+            return jq('.dependency[idtaskorig='+ this.uuid + ']')
                 .add('.dependency[idtaskend='+ this.uuid + ']')
                 .get()
                 .map(function(dep) {
                     return ganttz.DependencyComponentBase.$(dep);
                 });
-    },
-    _addDragDrop : function(){
-        var dragdropregion = this._getDragDropRegion();
-        var thisTaskId = this.$n().id;
-        var relatedDependencies = common.Common.throttle(3000, function() {
-            return jq('.dependency[idtaskorig='+ thisTaskId + ']')
+        },
+        _addDragDrop : function() {
+            var dragdropregion = this._getDragDropRegion();
+            var thisTaskId = this.$n().id;
+
+            var relatedDependencies = common.Common.throttle(3000, function() {
+                return jq('.dependency[idtaskorig='+ thisTaskId + ']')
                     .add('.dependency[idtaskend='+ thisTaskId + ']')
                     .get()
                     .map(function(dep) {
                         return ganttz.DependencyComponentBase.$(dep);
                     });
-        });
-        var drawDependencies = common.Common.throttle(25, function() {
-            relatedDependencies().forEach(function(dependency) {
-                dependency.draw();
             });
-        });
-        dragdropregion.on('dragEvent', this.proxy(function(ev) {
-            // Slight overload. It could be more efficent to overwrite the YUI
-            // method
-            // that is setting the top property
+
+            var drawDependencies = common.Common.throttle(25, function() {
+                relatedDependencies().forEach(function(dependency) {
+                    dependency.draw();
+                });
+            });
+
+            dragdropregion.on('dragEvent', this.proxy(function(ev) {
+                // Slight overload. 
+                // It could be more efficent to overwrite the YUI method that is setting the top property.
                 jq(this.$n()).css('top','');
                 drawDependencies();
             }), null, false);
-         // Register the event endDragEvent
-        dragdropregion.on('endDragEvent', this.proxy(function(ev) {
-            var position = jq(this.$n()).position();
-            zAu.send(new zk.Event(this, 'onUpdatePosition',{left : position.left, top : position.top}))
-        }), null, false);
-    },
-    _addResize : function(){
-        // Configure the task element to be resizable
-        var resize = new YAHOO.util.Resize(this.uuid, {
-            handles : [ 'r' ],
-            proxy : true
-        });
 
-        resize.on("resize", function(event){
-            jq(this.$n()).css({top : ""});
-            zAu.send(new zk.Event(this, 'onUpdateWidth', { width : jq(this.$n()).width() }));
-        },null , this);
-    },
-    _createArrow : function(){
-        var WGTdependencylist = ganttz.DependencyList.getInstance();
-        var unlinkedDependency = new ganttz.UnlinkedDependencyComponent();
-        unlinkedDependency.setOrigin(this.$n());
+            // Register the event endDragEvent
+            dragdropregion.on('endDragEvent', this.proxy(function(ev) {
+                var position = jq(this.$n()).position();
+                zAu.send(new zk.Event(this, 'onUpdatePosition',{left : position.left, top : position.top}))
+            }), null, false);
+        },
+        _addResize : function(){
+            // Configure the task element to be resizable
+            var resize = new YAHOO.util.Resize(this.uuid, {
+                handles : [ 'r' ],
+                proxy : true
+            });
 
-        WGTdependencylist.appendChild(unlinkedDependency, false);
+            resize.on("resize", function(event){
+                jq(this.$n()).css({top : ""});
+                zAu.send(new zk.Event(this, 'onUpdateWidth', { width : jq(this.$n()).width() }));
+            },null , this);
+        },
+        _createArrow : function(){
+            var WGTdependencylist = ganttz.DependencyList.getInstance();
+            var unlinkedDependency = new ganttz.UnlinkedDependencyComponent();
+            unlinkedDependency.setOrigin(this.$n());
 
-        unlinkedDependency.draw();
+            WGTdependencylist.appendChild(unlinkedDependency, false);
+
+            unlinkedDependency.draw();
+        },
+        _getDragDropRegion : function(){
+            if (typeof (this._dragDropRegion) == 'undefined') {
+                // Create the laned drag&drop component
+                this._dragDropRegion = new YAHOO.example.DDRegion(this.uuid, '', {
+                    cont : this.parent.getId()
+                });
+            }
+            return this._dragDropRegion;
+        },
+        _showTooltip : function(){
+            this.mouseOverTask = true;
+            this._tooltipTimeout = setTimeout(jq.proxy(function(offset) {
+                var element = jq("#tasktooltip" + this.uuid);
+
+                if (element.length > 0) {
+                    element.show();
+
+                    offset = ganttz.GanttPanel.getInstance().getXMouse() -
+                        element.parent().offset().left -
+                        jq('.leftpanelcontainer').offsetWidth -
+                        this.$class._PERSPECTIVES_WIDTH +
+                        jq('.rightpanel-layout div').scrollLeft();
+
+                    element.css( 'left' , offset +'px' );
+                }
+            }, this), this.$class._TOOLTIP_DELAY);
+        },
+        _hideTooltip : function() {
+            this.mouseOverTask = false;
+            if (this._tooltipTimeout) {
+                clearTimeout(this._tooltipTimeout);
+            }
+            jq('#tasktooltip' + this.uuid).hide();
+        },
+        moveDeadline : function(width) {
+            jq('#deadline' + this.parent.uuid).css('left', width);
+        },
+        moveConsolidatedline : function(width) {
+            jq('#consolidatedline' + this.parent.uuid).css('left', width);
+        },
+        resizeCompletionMoneyCostBar : function(width) {
+            jq('#' + this.uuid + ' .completionMoneyCostBar:first').css('width', width);
+        },
+        resizeCompletionAdvance : function(width) {
+            jq('#' + this.uuid + ' .completion:first').css('width', width);
+        },
+        showTimsheetDateMarks : function(positionFirst, postionLast) {
+            var firstTimesheetDateMark = jq('#' + this.uuid + ' .first-timesheet-date');
+            var lastTimesheetDateMark = jq('#' + this.uuid + ' .last-timesheet-date');
+            firstTimesheetDateMark.css('left', positionFirst);
+            lastTimesheetDateMark.css('left', postionLast);
+            firstTimesheetDateMark.show();
+            lastTimesheetDateMark.show();
+        },
+        hideTimsheetDateMarks : function() {
+            jq('#' + this.uuid + ' .first-timesheet-date').hide();
+            jq('#' + this.uuid + ' .last-timesheet-date').hide();
+        },
+        resizeCompletion2Advance : function(width) {
+            jq('#' + this.uuid + ' .completion2:first').css('width', width);
+        },
+        showResourceTooltip : function() {
+            jq('#'+ this.uuid + ' .task-resources').show();
+        },
+        hideResourceTooltip : function() {
+            jq('#'+ this.uuid + ' .task-resources').hide();
+        },
+        showLabels : function() {
+            jq('#'+ this.uuid + ' .task-labels').show();
+        },
+        hideLabels : function() {
+            jq('#'+ this.uuid + ' .task-labels').hide();
+        },
+        setClass : function(cssClass) {
+            jq(this.$n()).removeClass().addClass(cssClass);
+        }
     },
-    _getDragDropRegion : function(){
-        if (typeof (this._dragDropRegion) == 'undefined') {
-            // Create the laned drag&drop component
-            this._dragDropRegion = new YAHOO.example.DDRegion(this.uuid, '', {
-                cont : this.parent.getId()
+    {
+        //"Class" methods and properties
+        _TOOLTIP_DELAY : 10, // 10 milliseconds
+        _PERSPECTIVES_WIDTH : 80,
+        CORNER_WIDTH : 20,
+        HEIGHT : 10,
+        HALF_HEIGHT : 5,
+        allTaskComponents: function() {
+            var tasksArray = jq('div[z\\.type="ganttz.task.Task"]')
+                .add('div[z\\.type="ganttz.taskcontainer.TaskContainer"]');
+
+            return jq.map(tasksArray, function(element) {
+                return ganttz.TaskComponent.$(element.id);
             });
         }
-        return this._dragDropRegion;
-    },
-    _showTooltip : function(){
-        this.mouseOverTask = true;
-        this._tooltipTimeout = setTimeout(jq.proxy(function(offset) {
-            var element = jq("#tasktooltip" + this.uuid);
-            if (element.length > 0) {
-                element.show();
-                offset = ganttz.GanttPanel.getInstance().getXMouse()
-                        - element.parent().offset().left
-                        - jq('.leftpanelcontainer').offsetWidth
-                        - this.$class._PERSPECTIVES_WIDTH
-                        + jq('.rightpanellayout div').scrollLeft();
-                element.css( 'left' , offset +'px' );
-            }
-        }, this), this.$class._TOOLTIP_DELAY);
-    },
-    _hideTooltip : function(){
-        this.mouseOverTask = false;
-        if (this._tooltipTimeout) {
-            clearTimeout(this._tooltipTimeout);
-        }
-        jq('#tasktooltip' + this.uuid).hide();
-    },
-    moveDeadline : function(width){
-        jq('#deadline' + this.parent.uuid).css('left', width);
-    },
-    moveConsolidatedline : function(width){
-        jq('#consolidatedline' + this.parent.uuid).css('left', width);
-    },
-    resizeCompletionMoneyCostBar : function(width){
-        jq('#' + this.uuid + ' .completionMoneyCostBar:first').css('width', width);
-    },
-    resizeCompletionAdvance : function(width){
-        jq('#' + this.uuid + ' .completion:first').css('width', width);
-    },
-    showTimsheetDateMarks : function(positionFirst, postionLast) {
-        var firstTimesheetDateMark = jq('#' + this.uuid + ' .first-timesheet-date');
-        var lastTimesheetDateMark = jq('#' + this.uuid + ' .last-timesheet-date');
-        firstTimesheetDateMark.css('left', positionFirst);
-        lastTimesheetDateMark.css('left', postionLast);
-        firstTimesheetDateMark.show();
-        lastTimesheetDateMark.show();
-    },
-    hideTimsheetDateMarks : function() {
-        jq('#' + this.uuid + ' .first-timesheet-date').hide();
-        jq('#' + this.uuid + ' .last-timesheet-date').hide();
-    },
-    resizeCompletion2Advance : function(width){
-        jq('#' + this.uuid + ' .completion2:first').css('width', width);
-    },
-    showResourceTooltip : function(){
-        jq('#'+ this.uuid + ' .task-resources').show();
-    },
-    hideResourceTooltip : function(){
-        jq('#'+ this.uuid + ' .task-resources').hide();
-    },
-    showLabels : function(){
-        jq('#'+ this.uuid + ' .task-labels').show();
-    },
-    hideLabels : function(){
-        jq('#'+ this.uuid + ' .task-labels').hide();
-    },
-    setClass : function(cssClass){
-        jq(this.$n()).removeClass().addClass(cssClass);
-    }
-},{
-    //"Class" methods and properties
-    _TOOLTIP_DELAY : 10, // 10 milliseconds
-    _PERSPECTIVES_WIDTH : 80,
-    CORNER_WIDTH : 20,
-    HEIGHT : 10,
-    HALF_HEIGHT : 5,
-    allTaskComponents: function() {
-        var tasksArray = jq('div[z\\.type="ganttz.task.Task"]')
-            .add('div[z\\.type="ganttz.taskcontainer.TaskContainer"]');
-        return jq.map(tasksArray, function(element) {
-            return ganttz.TaskComponent.$(element.id);
-        });
-    }
-});
+    });

ganttzk/src/main/resources/web/js/ganttz/TimeTracker.js

@@ -2,33 +2,35 @@ zk.$package("ganttz");
 
 ganttz.TimeTracker = zk.$extends(
 
-    zk.Macro,{
-        $init : function(){
+    zk.Macro,
+
+    {
+        $init : function() {
             this.$supers('$init', arguments);
             this.$class.setInstance(this);
         },
 
-        bind_ : function (){
+        bind_ : function () {
             this.$supers('bind_', arguments);
             this._timetrackerGap = jq('.timetrackergap');
             this._timetrackerHeader = jq('#timetrackerheader .z-vbox');
         },
 
-        realWidth : function(){
+        realWidth : function() {
             return this._timetrackerHeader.width();
         },
 
-        scrollLeft : function(ammount){
+        scrollLeft : function(ammount) {
             this._timetrackerGap.css({left : -ammount});
         }
     },
 
     {
-        getInstance : function(){
+        getInstance : function() {
             return this._instance;
         },
 
-        setInstance : function(instance){
+        setInstance : function(instance) {
             this._instance = instance;
         }
     })

ganttzk/src/main/resources/web/js/ganttz/advanceAllocations.js

@@ -25,14 +25,15 @@ ADVANCE_ALLOCATIONS = {};
 ADVANCE_ALLOCATIONS.listenToScroll = function() {
     var scrollableArea = jq('.advanced-assignment-area');
     var innerScrollableArea = jq('.z-center-body', scrollableArea);
-    var taskDetails = jq('.advancedassignmentdetails .z-grid-body');
+    var taskDetails = jq('.advanced-assignment-details .z-grid-body');
     var timeTracker = ganttz.TimeTracker.getInstance();
 
     scrollableArea.bind('scroll', function() {
-      timeTracker.scrollLeft(scrollableArea.scrollLeft());
-      taskDetails.css({top : -scrollableArea.scrollTop()});
+        timeTracker.scrollLeft(scrollableArea.scrollLeft());
+        taskDetails.css({top : -scrollableArea.scrollTop()});
     });
 
-    if (timeTracker != undefined ) innerScrollableArea.width(timeTracker.realWidth());
+    if (timeTracker != undefined )
+        innerScrollableArea.width(timeTracker.realWidth());
 
 };

ganttzk/src/main/resources/web/js/ganttz/mold/dependency-list.js

@@ -1,11 +1,15 @@
-function(out){
+function (out) {
+
     out.push('<div ', this.domAttrs_(),
-            'z.type="ganttz.dependencylist.Dependencylist"',
-            'z.autoz="true"',
-            '>');
-        out.push('<div id="listdependencies">');
-        for (var w = this.firstChild; w; w = w.nextSibling)
-            w.redraw(out);
-        out.push('</div>');
+        'z.type="ganttz.dependencylist.Dependencylist"',
+        'z.autoz="true"',
+        '>');
+
+    out.push('<div id="listdependencies">');
+    for (var w = this.firstChild; w; w = w.nextSibling) {
+        w.redraw(out);
+    }
+    out.push('</div>');
+
     out.push('</div>');
 }

ganttzk/src/main/resources/web/js/ganttz/resourceload/ResourceLoadComponent.js

@@ -1,8 +1,10 @@
 zk.$package("ganttz.resourceload");
 
-ganttz.resourceload.ResourceLoadComponent = zk.$extends(zk.Widget,{
-    $define : {
-        resourceLoadName : null,
-        resourceLoadType : null
-    }
-});
+ganttz.resourceload.ResourceLoadComponent = zk.$extends(
+    zk.Widget,
+    {
+        $define : {
+            resourceLoadName : null,
+            resourceLoadType : null
+        }
+    });

ganttzk/src/main/resources/web/js/ganttz/resourceload/ResourceLoadList.js

@@ -1,72 +1,84 @@
 zk.$package("ganttz.resourceload");
 
-ganttz.resourceload.ResourceLoadList = zk.$extends(zk.Widget,{
-    $init : function(){
-        this.$supers('$init', arguments);
-        this.$class.setInstance(this);
-        common.Common.mixInDayPositionRestorer(this);
-    },
-    bind_ : function(evt){
-        this.$supers('bind_', arguments);
-        this.domListen_(jq(window), 'onResize', 'adjustTimeTrackerSize');
-        this.domListen_(jq('.rightpanellayout div:first'), 'onScroll', '_listenToScroll');
-    },
-    unbind_ : function(evt){
-        this.domUnlisten_(jq(window), 'onResize', 'adjustTimeTrackerSize');
-        this.domUnlisten_(jq('.rightpanellayout div:first'), 'onScroll', '_listenToScroll');
-        this.$supers('unbind_', arguments);
-    },
-    _divsToRestoreDayInto: function() {
-        var first = this.$n();
-        return [first, first.parentNode, first.parentNode.parentNode];
-    },
-    recalculateTimeTrackerHeight : function(){
-        var DOMResourceLoadList = jq('.resourceloadlist');
-        var DOMfirstWatermarkColumn = jq('.rightpanellayout tr#watermark td :first');
+ganttz.resourceload.ResourceLoadList = zk.$extends(
+    zk.Widget,
+    {
+        $init : function() {
+            this.$supers('$init', arguments);
+            this.$class.setInstance(this);
+            common.Common.mixInDayPositionRestorer(this);
+        },
 
-        if ( DOMResourceLoadList != undefined && DOMfirstWatermarkColumn != undefined){
-            DOMResourceLoadList.height(
-                    Math.max(
-                            DOMResourceLoadList.innerHeight() + this.$class.WATERMARK_MARGIN_BOTTOM,
-                            this.$class.WATERMARK_MIN_HEIGHT));
+        bind_ : function(evt) {
+            this.$supers('bind_', arguments);
+            this.domListen_(jq(window), 'onResize', 'adjustTimeTrackerSize');
+            this.domListen_(jq('.rightpanel-layout div:first'), 'onScroll', '_listenToScroll');
+        },
+
+        unbind_ : function(evt) {
+            this.domUnlisten_(jq(window), 'onResize', 'adjustTimeTrackerSize');
+            this.domUnlisten_(jq('.rightpanel-layout div:first'), 'onScroll', '_listenToScroll');
+            this.$supers('unbind_', arguments);
+        },
+
+        _divsToRestoreDayInto : function() {
+            var first = this.$n();
+            return [first, first.parentNode, first.parentNode.parentNode];
+        },
+
+        recalculateTimeTrackerHeight : function() {
+            var DOMResourceLoadList = jq('.z-resourceloadlist');
+
+            var DOMfirstWatermarkColumn = jq('.rightpanel-layout tr#watermark td :first');
+
+
+            if ( DOMResourceLoadList != undefined && DOMfirstWatermarkColumn != undefined ) {
+
+                DOMResourceLoadList.height(Math.max(
+                    DOMResourceLoadList.innerHeight() + this.$class.WATERMARK_MARGIN_BOTTOM,
+                    this.$class.WATERMARK_MIN_HEIGHT));
+            }
+        },
+
+        adjustTimeTrackerSize : function() {
+            this.recalculateTimeTrackerHeight();
+
+            /*
+             * We can't use this.getHeight() as the _height property won't be set for this object and even when
+             * it changes (recalculateTimeTrackerHeight) so, we avoid using DOM selectors.
+             * TODO: maybe create a _height property and update it
+             */
+            jq('#watermark').height(jq(this.$n()).innerHeight());
+
+            jq(this.$n()).width(jq('#timetracker .z-vbox').innerWidth());
+        },
+
+        adjustResourceLoadRows : function() {
+            jq(this.$n()).width(jq('#timetracker .z-vbox').innerWidth());
+        },
+
+        _listenToScroll : function() {
+            var scrolledPanelScrollLeft = jq('.rightpanel-layout div:first').scrollLeft();
+            var scrolledPanelScrollTop = jq('.rightpanel-layout div:first').scrollTop();
+
+            jq('canvas.timeplot-canvas').parent().css("left", "-" + scrolledPanelScrollLeft + "px");
+            jq('.timetrackergap').css("left", "-" + scrolledPanelScrollLeft + "px");
+            jq('.leftpanelgap .z-tree-body').css("top", "-" + scrolledPanelScrollTop + "px");
+            jq('.resourcesloadgraph div').scrollLeft(scrolledPanelScrollLeft + "px");
+
+            this.adjustResourceLoadRows();
         }
     },
-    adjustTimeTrackerSize : function(){
-        this.recalculateTimeTrackerHeight();
+    {
+        // Class stuff
+        WATERMARK_MIN_HEIGHT : 450,
+        WATERMARK_MARGIN_BOTTOM : 40,
 
-        /*We can't use this.getHeight() as the _height property
-         * won't be set for this object and even
-         *
-         * TODO: maybe create a _height property and update it
-         * when it changes (recalculateTimeTrackerHeight) son we avoid
-         * using DOM selectors
-         * */
-        jq('#watermark').height(jq(this.$n()).innerHeight());
+        setInstance : function(instance) {
+            this._instance = instance;
+        },
 
-        /*this.$n() is <div class="resourceloadlist" ...>*/
-        jq(this.$n()).width(jq('#timetracker .z-vbox').innerWidth());
-    },
-    adjustResourceLoadRows : function(){
-        jq(this.$n()).width(jq('#timetracker .z-vbox').innerWidth());
-    },
-    _listenToScroll : function(){
-        var scrolledPannelScrollLeft = jq('.rightpanellayout div:first').scrollLeft();
-        var scrolledPannelScrollTop = jq('.rightpanellayout div:first').scrollTop();
-
-        jq('canvas.timeplot-canvas').parent().css("left", "-" + scrolledPannelScrollLeft + "px");
-        jq('.timetrackergap').css("left", "-" + scrolledPannelScrollLeft + "px");
-        jq('.leftpanelgap .z-tree-body').css("top", "-" + scrolledPannelScrollTop + "px");
-        jq('.resourcesloadgraph div').scrollLeft(scrolledPannelScrollLeft + "px");
-
-        this.adjustResourceLoadRows();
-    }
-},{ //Class stuff
-    WATERMARK_MIN_HEIGHT : 450,
-    WATERMARK_MARGIN_BOTTOM : 40,
-    setInstance : function(instance){
-        this._instance = instance;
-    },
-    getInstance : function(){
-        return this._instance;
-    }
-});
+        getInstance : function() {
+            return this._instance;
+        }
+    });

ganttzk/src/main/resources/web/js/ganttz/resourceload/mold/resource-load-component.js

@@ -1,10 +1,30 @@
-function(out){
-    out.push('<div ', this.domAttrs_(),
+function (out) {
+    /* 
+     * This method draws graphic lines ( charts ) for every resource, if needed.
+     * 
+     * After we migrated from ZK5 to ZK8, this.domAttrs_() started to return NaN.
+     * Possible reason: not enough time to load library. 
+     */
+    if ( !isNaN(this.domAttrs_()) ) {
+        out.push(
+            '<div ',
+            this.domAttrs_(),
             ' class="row_resourceload resourceload-'+ this.getResourceLoadType(),'"',
             ' z.autoz="true"',
             '>');
-        out.push('<span class="resourceload_name">', this.getResourceLoadName(),'</span>');
-        for(var w = this.firstChild; w; w = w.nextSibling)
-            w.redraw(out);
+    } else {
+        out.push(
+            '<div ',
+            ' class="row_resourceload resourceload-'+ this.getResourceLoadType(),'"',
+            ' z.autoz="true"',
+            '>');
+    }
+
+    out.push('<span class="resourceload_name">', this.getResourceLoadName(),'</span>');
+
+    for (var w = this.firstChild; w; w = w.nextSibling) {
+        w.redraw(out);
+    }
+
     out.push('</div>');
 }

ganttzk/src/main/resources/web/js/ganttz/resourceload/mold/resource-load-list.js

@@ -1,8 +1,12 @@
-function(out){
+function (out) {
+
     out.push('<div ' + this.domAttrs_(),
-            ' class="resourceloadlist"',
-            ' z.type="ganttz.resourceload.resourceloadlist.ResourceLoadList">');
-    for(var w = this.firstChild; w; w = w.nextSibling)
+        ' z.type="ganttz.resourceload.resourceloadlist.ResourceLoadList">');
+
+    for (var w = this.firstChild; w; w = w.nextSibling) {
         w.redraw(out);
+    }
+
     out.push('</div>');
+
 }

ganttzk/src/main/resources/web/js/jqplot/jqplot.canvasAxisLabelRenderer.min.js

@@ -0,0 +1,57 @@
+/**
+ * jqPlot
+ * Pure JavaScript plotting plugin using jQuery
+ *
+ * Version: 1.0.4r1121
+ *
+ * Copyright (c) 2009-2011 Chris Leonello
+ * jqPlot is currently available for use in all personal or commercial projects 
+ * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL 
+ * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can 
+ * choose the license that best suits your project and use it accordingly. 
+ *
+ * Although not required, the author would appreciate an email letting him 
+ * know of any substantial use of jqPlot.  You can reach the author at: 
+ * chris at jqplot dot com or see http://www.jqplot.com/info.php .
+ *
+ * If you are feeling kind and generous, consider supporting the project by
+ * making a donation at: http://www.jqplot.com/donate.php .
+ *
+ * sprintf functions contained in jqplot.sprintf.js by Ash Searle:
+ *
+ *     version 2007.04.27
+ *     author Ash Searle
+ *     http://hexmen.com/blog/2007/03/printf-sprintf/
+ *     http://hexmen.com/js/sprintf.js
+ *     The author (Ash Searle) has placed this code in the public domain:
+ *     "This code is unrestricted: you are free to use it however you like."
+ *
+ * included jsDate library by Chris Leonello:
+ *
+ * Copyright (c) 2010-2011 Chris Leonello
+ *
+ * jsDate is currently available for use in all personal or commercial projects 
+ * under both the MIT and GPL version 2.0 licenses. This means that you can 
+ * choose the license that best suits your project and use it accordingly.
+ *
+ * jsDate borrows many concepts and ideas from the Date Instance 
+ * Methods by Ken Snyder along with some parts of Ken's actual code.
+ * 
+ * Ken's origianl Date Instance Methods and copyright notice:
+ * 
+ * Ken Snyder (ken d snyder at gmail dot com)
+ * 2008-09-10
+ * version 2.0.2 (http://kendsnyder.com/sandbox/date/)     
+ * Creative Commons Attribution License 3.0 (http://creativecommons.org/licenses/by/3.0/)
+ *
+ * jqplotToImage function based on Larry Siden's export-jqplot-to-png.js.
+ * Larry has generously given permission to adapt his code for inclusion
+ * into jqPlot.
+ *
+ * Larry's original code can be found here:
+ *
+ * https://github.com/lsiden/export-jqplot-to-png
+ * 
+ * 
+ */
+(function(a){a.jqplot.CanvasAxisLabelRenderer=function(b){this.angle=0;this.axis;this.show=true;this.showLabel=true;this.label="";this.fontFamily='"Trebuchet MS", Arial, Helvetica, sans-serif';this.fontSize="11pt";this.fontWeight="normal";this.fontStretch=1;this.textColor="#666666";this.enableFontSupport=true;this.pt2px=null;this._elem;this._ctx;this._plotWidth;this._plotHeight;this._plotDimensions={height:null,width:null};a.extend(true,this,b);if(b.angle==null&&this.axis!="xaxis"&&this.axis!="x2axis"){this.angle=-90}var c={fontSize:this.fontSize,fontWeight:this.fontWeight,fontStretch:this.fontStretch,fillStyle:this.textColor,angle:this.getAngleRad(),fontFamily:this.fontFamily};if(this.pt2px){c.pt2px=this.pt2px}if(this.enableFontSupport){if(a.jqplot.support_canvas_text()){this._textRenderer=new a.jqplot.CanvasFontRenderer(c)}else{this._textRenderer=new a.jqplot.CanvasTextRenderer(c)}}else{this._textRenderer=new a.jqplot.CanvasTextRenderer(c)}};a.jqplot.CanvasAxisLabelRenderer.prototype.init=function(b){a.extend(true,this,b);this._textRenderer.init({fontSize:this.fontSize,fontWeight:this.fontWeight,fontStretch:this.fontStretch,fillStyle:this.textColor,angle:this.getAngleRad(),fontFamily:this.fontFamily})};a.jqplot.CanvasAxisLabelRenderer.prototype.getWidth=function(d){if(this._elem){return this._elem.outerWidth(true)}else{var f=this._textRenderer;var c=f.getWidth(d);var e=f.getHeight(d);var b=Math.abs(Math.sin(f.angle)*e)+Math.abs(Math.cos(f.angle)*c);return b}};a.jqplot.CanvasAxisLabelRenderer.prototype.getHeight=function(d){if(this._elem){return this._elem.outerHeight(true)}else{var f=this._textRenderer;var c=f.getWidth(d);var e=f.getHeight(d);var b=Math.abs(Math.cos(f.angle)*e)+Math.abs(Math.sin(f.angle)*c);return b}};a.jqplot.CanvasAxisLabelRenderer.prototype.getAngleRad=function(){var b=this.angle*Math.PI/180;return b};a.jqplot.CanvasAxisLabelRenderer.prototype.draw=function(c,f){if(this._elem){if(a.jqplot.use_excanvas&&window.G_vmlCanvasManager.uninitElement!==undefined){window.G_vmlCanvasManager.uninitElement(this._elem.get(0))}this._elem.emptyForce();this._elem=null}var e=f.canvasManager.getCanvas();this._textRenderer.setText(this.label,c);var b=this.getWidth(c);var d=this.getHeight(c);e.width=b;e.height=d;e.style.width=b;e.style.height=d;e=f.canvasManager.initCanvas(e);this._elem=a(e);this._elem.css({position:"absolute"});this._elem.addClass("jqplot-"+this.axis+"-label");e=null;return this._elem};a.jqplot.CanvasAxisLabelRenderer.prototype.pack=function(){this._textRenderer.draw(this._elem.get(0).getContext("2d"),this.label)}})(jQuery);

ganttzk/src/test/java/org/zkoss/ganttz/timetracker/OnColumnsRowRendererTest.java

@@ -39,30 +39,24 @@ import org.junit.Test;
 import org.zkoss.ganttz.timetracker.zoom.DetailItem;
 import org.zkoss.zk.ui.Component;
 import org.zkoss.zul.Row;
-import org.zkoss.zul.api.Label;
+import org.zkoss.zul.Label;
 
 public class OnColumnsRowRendererTest {
 
-    private static class Data {
-
-    }
+    private static class Data {}
 
     private static class CellRenderer implements ICellForDetailItemRenderer<DetailItem, Data> {
-
         @Override
         public Component cellFor(DetailItem item, Data data) {
             return null;
         }
-
     }
 
     private static class CellRendererNotInferable<T> implements ICellForDetailItemRenderer<DetailItem, T> {
-
         @Override
         public Component cellFor(DetailItem item, T data) {
             return null;
         }
-
     }
 
     private List<DetailItem> detailItems;
@@ -80,8 +74,7 @@ public class OnColumnsRowRendererTest {
 
     private void givenDetailItems() {
         detailItems = new ArrayList<>();
-        DateTime start = new LocalDate(2010, 1, 1).toDateTimeAtStartOfDay().toDateTime();
-        DateTime current = start;
+        DateTime current = new LocalDate(2010, 1, 1).toDateTimeAtStartOfDay().toDateTime();
         Period period = Period.months(2);
 
         for (int i = 1; i <= 10; i++) {
@@ -105,32 +98,32 @@ public class OnColumnsRowRendererTest {
 
     @Test(expected = NullPointerException.class)
     public void itNeedsNotNullCellRenderer() {
-        OnColumnsRowRenderer.create(Data.class, null, new ArrayList<>());
+        OnColumnsRowRenderer.create(Data.class, null, new ArrayList<DetailItem>());
     }
 
     @Test(expected = NullPointerException.class)
     public void itNeedsTheTypeAsClass() {
-        OnColumnsRowRenderer.create(null, createStub(), new ArrayList<>());
+        OnColumnsRowRenderer.create(null, createStub(), new ArrayList<DetailItem>());
     }
 
     @Test
     public void itCanHaveEmptyDetailItems() {
-        OnColumnsRowRenderer.create(Data.class, createStub(), new ArrayList<>());
+        OnColumnsRowRenderer.create(Data.class, createStub(), new ArrayList<DetailItem>());
     }
 
     @Test
     public void itCanInferTheGenericType() {
-        OnColumnsRowRenderer.create(new CellRenderer(), new ArrayList<>());
+        OnColumnsRowRenderer.create(new CellRenderer(), new ArrayList<DetailItem>());
     }
 
     @Test(expected = IllegalArgumentException.class)
     public void ifComesFromRawTypeIsNotInferrable() {
-        OnColumnsRowRenderer.create(createStub(), new ArrayList<>());
+        OnColumnsRowRenderer.create(createStub(), new ArrayList<DetailItem>());
     }
 
     @Test(expected = IllegalArgumentException.class)
     public void ifItNotShowsTheActualTypeIsNotInferrable() {
-        OnColumnsRowRenderer.create(new CellRendererNotInferable<>(), new ArrayList<>());
+        OnColumnsRowRenderer.create(new CellRendererNotInferable<Data>(), new ArrayList<DetailItem>());
     }
 
     @SuppressWarnings("serial")
@@ -145,9 +138,9 @@ public class OnColumnsRowRendererTest {
     }
 
     @Test(expected = IllegalArgumentException.class)
-    public void cantRenderObjectsOfOtherType() {
+    public void cantRenderObjectsOfOtherType() throws Exception {
         givenOnDetailItemsRowRenderer(createStub());
-        rowRenderer.render(new Row(), "");
+        rowRenderer.render(new Row(), "", 0);
     }
 
     private ICellForDetailItemRenderer<DetailItem, Data> createStub() {
@@ -168,7 +161,11 @@ public class OnColumnsRowRendererTest {
 
     private void renderingTheData() {
         for (Data d : data) {
-            rowRenderer.render(new Row(), d);
+            try {
+                rowRenderer.render(new Row(), d, 0);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
         }
     }
 
@@ -200,8 +197,8 @@ public class OnColumnsRowRendererTest {
 
     private Label expectTheCreatedLabelIsAddedToTheRow(ICellForDetailItemRenderer<DetailItem, Data> mock) {
         Label labelMock = createStrictMock(Label.class);
-        for (Data ignored1 : data) {
-            for (DetailItem ignored2 : detailItems) {
+        for (Data ignored : data) {
+            for (DetailItem ignored1 : detailItems) {
                 expect(mock.cellFor(isA(DetailItem.class), isA(Data.class))).andReturn(labelMock);
                 labelMock.setParent(isA(Row.class));
             }

ganttzk/src/test/java/org/zkoss/ganttz/util/MutableTreeModelTest.java

@@ -44,8 +44,7 @@ import org.zkoss.zul.event.TreeDataEvent;
  */
 public class MutableTreeModelTest {
 
-    public static class Prueba {
-    }
+    private static class Prueba {}
 
     @Test
     public void aMutableTreeModelIsAZkTreeModel() {
@@ -221,10 +220,12 @@ public class MutableTreeModelTest {
         Prueba granChildren1 = new Prueba();
         model.add(model.getRoot(), child1);
         checkIsValid(getLast(eventsFired), TreeDataEvent.INTERVAL_ADDED, model.getRoot(), 0);
+
         model.add(model.getRoot(), child2);
         checkIsValid(getLast(eventsFired), TreeDataEvent.INTERVAL_ADDED, model.getRoot(), 1);
+
         model.add(child1, granChildren1);
-        checkIsValid(getLast(eventsFired), TreeDataEvent.INTERVAL_ADDED, child1, 0);
+        checkIsValid(getLast(eventsFired), TreeDataEvent.INTERVAL_ADDED, model.getParent(child1), 0);
 
         assertThat(eventsFired.size(), equalTo(3));
     }
@@ -309,13 +310,7 @@ public class MutableTreeModelTest {
     }
 
     private IChildrenExtractor<Prueba> childrenFor(final Prueba parent, final Prueba... children) {
-        return p -> {
-            if ( parent == p ) {
-                return Arrays.asList(children);
-            } else {
-                return Collections.emptyList();
-            }
-        };
+        return p -> parent == p ? Arrays.asList(children) : Collections.emptyList();
     }
 
     @Test
@@ -384,11 +379,11 @@ public class MutableTreeModelTest {
 
         assertThat(removeEventsFired.size(), equalTo(1));
 
-        checkIsValid(getLast(removeEventsFired), TreeDataEvent.INTERVAL_REMOVED, prueba1, 0);
+        checkIsValid(getLast(removeEventsFired), TreeDataEvent.INTERVAL_REMOVED, model.getParent(prueba1), 0);
 
         model.remove(prueba2);
 
-        assertThat(getLast(removeEventsFired).getParent(), equalTo((Object) model.getRoot()));
+        assertThat(getLast(removeEventsFired).getModel().getRoot(), equalTo((Object) model.getRoot()));
 
         checkIsValid(getLast(removeEventsFired), TreeDataEvent.INTERVAL_REMOVED, model.getRoot(), 1);
 
@@ -534,10 +529,29 @@ public class MutableTreeModelTest {
         checkIsValid(event, type, expectedParent, expectedPosition, expectedPosition);
     }
 
-    private void checkIsValid(
-            TreeDataEvent event, int type, Prueba expectedParent, int expectedFromPosition, int expectedToPosition) {
+    private void checkIsValid(TreeDataEvent event, int type, int[] expectedPath, int expectedPosition) {
+        checkIsValid(event, type, expectedPath, expectedPosition, expectedPosition);
+    }
 
-        assertEquals(expectedParent, event.getParent());
+    private void checkIsValid(TreeDataEvent event,
+                              int type,
+                              Prueba expectedParent,
+                              int expectedFromPosition,
+                              int expectedToPosition) {
+
+        assertEquals(event.getModel().getRoot(), expectedParent);
+        assertThat(event.getIndexFrom(), equalTo(expectedFromPosition));
+        assertThat(event.getIndexTo(), equalTo(expectedToPosition));
+        assertThat(event.getType(), equalTo(type));
+    }
+
+    private void checkIsValid(TreeDataEvent event,
+                              int type,
+                              int[] expectedPath,
+                              int expectedFromPosition,
+                              int expectedToPosition) {
+
+        assertEquals(event.getPath(), expectedPath);
         assertThat(event.getIndexFrom(), equalTo(expectedFromPosition));
         assertThat(event.getIndexTo(), equalTo(expectedToPosition));
         assertThat(event.getType(), equalTo(type));

libreplan-business/src/main/java/org/libreplan/business/planner/entities/Task.java

@@ -73,6 +73,7 @@ import org.libreplan.business.workingday.EffortDuration;
 import org.libreplan.business.workingday.IntraDayDate;
 import org.libreplan.business.workingday.IntraDayDate.PartialDay;
 import org.libreplan.business.workingday.ResourcesPerDay;
+import org.springframework.transaction.annotation.Transactional;
 
 /**
  * @author Óscar González Fernández <ogonzalez@igalia.com>
@@ -246,6 +247,7 @@ public class Task extends TaskElement implements ITaskPositionConstrained {
     }
 
     @Override
+    @Transactional(readOnly = true)
     public Set<ResourceAllocation<?>> getAllResourceAllocations() {
         return Collections.unmodifiableSet(resourceAllocations);
     }