From 8c7077ac467cbc5f72743518a95d31d83ea6bf6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=93scar=20Gonz=C3=A1lez=20Fern=C3=A1ndez?=
 <ogonzalez@igalia.com>
Date: Mon, 11 Jan 2010 16:49:51 +0100
Subject: [PATCH] ItEr43S09ImplantacionAplicacionItEr42S13: Adding
 reloadComponent method.

This method invalidates the associated zk component for a
task. Invalidating the parent, otherwise the task dissapears.
---
 .../java/org/zkoss/ganttz/TaskComponent.java  | 14 +++++++++++
 .../main/java/org/zkoss/ganttz/data/Task.java | 25 +++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java b/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java
index fea70860b..0955ab037 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/TaskComponent.java
@@ -34,6 +34,7 @@ import org.zkoss.ganttz.adapters.IDisabilityConfiguration;
 import org.zkoss.ganttz.data.Milestone;
 import org.zkoss.ganttz.data.Task;
 import org.zkoss.ganttz.data.TaskContainer;
+import org.zkoss.ganttz.data.Task.IReloadComponentRequested;
 import org.zkoss.ganttz.data.constraint.Constraint;
 import org.zkoss.ganttz.data.constraint.Constraint.IConstraintViolationListener;
 import org.zkoss.lang.Objects;
@@ -175,6 +176,8 @@ public class TaskComponent extends Div implements AfterCompose {
         return asTaskComponent(task, taskList, true);
     }
 
+    private IReloadComponentRequested reloadComponentRequested;
+
     public TaskComponent(Task task,
             IDisabilityConfiguration disabilityConfiguration) {
         setHeight(HEIGHT_PER_TASK + "px");
@@ -192,6 +195,16 @@ public class TaskComponent extends Div implements AfterCompose {
             }
         };
         this.task.addConstraintViolationListener(taskViolationListener);
+        reloadComponentRequested = new IReloadComponentRequested() {
+
+            @Override
+            public void reloadComponentRequested() {
+                // TODO can't call to invalidate because the task was
+                // disappearing. Fix the problem and just invalidate this task
+                getParent().invalidate();
+            }
+        };
+        this.task.addReloadListener(reloadComponentRequested);
     }
 
     protected String calculateClass() {
@@ -441,6 +454,7 @@ public class TaskComponent extends Div implements AfterCompose {
 
     protected void remove() {
         this.detach();
+        task.removeReloadListener(reloadComponentRequested);
     }
 
     public boolean isTopLevel() {
diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java b/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java
index 465d5e971..91b88756e 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java
@@ -23,9 +23,11 @@ package org.zkoss.ganttz.data;
 import java.beans.PropertyChangeListener;
 import java.beans.PropertyChangeSupport;
 import java.math.BigDecimal;
+import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
+import org.apache.commons.lang.Validate;
 import org.zkoss.ganttz.data.constraint.Constraint;
 import org.zkoss.ganttz.data.constraint.DateConstraint;
 import org.zkoss.ganttz.data.constraint.Constraint.IConstraintViolationListener;
@@ -38,6 +40,12 @@ import org.zkoss.ganttz.util.ConstraintViolationNotificator;
  */
 public abstract class Task implements ITaskFundamentalProperties {
 
+    public interface IReloadComponentRequested {
+        public void reloadComponentRequested();
+    }
+
+    private List<IReloadComponentRequested> reloadRequestedListeners = new ArrayList<IReloadComponentRequested>();
+
     private PropertyChangeSupport fundamentalPropertiesListeners = new PropertyChangeSupport(
             this);
 
@@ -271,4 +279,21 @@ public abstract class Task implements ITaskFundamentalProperties {
         violationNotificator.addConstraintViolationListener(listener);
     }
 
+    public void addReloadListener(
+            IReloadComponentRequested reloadComponentRequested) {
+        Validate.notNull(reloadComponentRequested);
+        this.reloadRequestedListeners.add(reloadComponentRequested);
+    }
+
+    public void removeReloadListener(
+            IReloadComponentRequested reloadComponentRequested) {
+        this.reloadRequestedListeners.remove(reloadComponentRequested);
+    }
+
+    public void reloadComponent() {
+        for (IReloadComponentRequested each : reloadRequestedListeners) {
+            each.reloadComponentRequested();
+        }
+    }
+
 }