ItEr44S08ImplantacionAplicacionItEr43S09: Adding utility class for simplifying the handling of tabs selection

navalplanner-webapp/src/main/java/org/navalplanner/web/common/OnTabSelection.java

@@ -0,0 +1,73 @@
+/*
+ * This file is part of ###PROJECT_NAME###
+ *
+ * Copyright (C) 2009 Fundación para o Fomento da Calidade Industrial e
+ *                    Desenvolvemento Tecnolóxico de Galicia
+ *
+ * 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.navalplanner.web.common;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.commons.lang.Validate;
+import org.zkoss.zk.ui.Component;
+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.SelectEvent;
+import org.zkoss.zul.Tabbox;
+
+/**
+ * @author Óscar González Fernández <ogonzalez@igalia.com>
+ *
+ */
+public class OnTabSelection {
+
+    public interface IOnSelectingTab {
+        public void tabSelected();
+    }
+
+    private Map<Component, IOnSelectingTab> tabs = new HashMap<Component, IOnSelectingTab>();
+
+    public static OnTabSelection createFor(Tabbox tabBox) {
+        return new OnTabSelection(tabBox);
+    }
+
+    public OnTabSelection(Tabbox tabBox) {
+        Validate.notNull(tabBox);
+        tabBox.addEventListener(Events.ON_SELECT, new EventListener() {
+
+            @Override
+            public void onEvent(Event event) throws Exception {
+                SelectEvent e = (SelectEvent) event;
+                for (Object each : e.getSelectedItems()) {
+                    if (tabs.get(each) != null) {
+                        tabs.get(each).tabSelected();
+                    }
+                }
+            }
+        });
+    }
+
+    public OnTabSelection onSelectingTab(Component tab,
+            IOnSelectingTab onSelectingTab) {
+        Validate.notNull(tab);
+        Validate.notNull(onSelectingTab);
+        tabs.put(tab, onSelectingTab);
+        return this;
+    }
+
+}