NEW - bug 296682: [modeling] Add button using a DropDown menu
https://bugs.eclipse.org/bugs/show_bug.cgi?id=296682
diff --git a/modeling/plugins/org.eclipse.pde.emfforms/src/org/eclipse/pde/emfforms/editor/actions/CreateElementDropDownAction.java b/modeling/plugins/org.eclipse.pde.emfforms/src/org/eclipse/pde/emfforms/editor/actions/CreateElementDropDownAction.java
new file mode 100644
index 0000000..721daf6
--- /dev/null
+++ b/modeling/plugins/org.eclipse.pde.emfforms/src/org/eclipse/pde/emfforms/editor/actions/CreateElementDropDownAction.java
@@ -0,0 +1,132 @@
+/**
+ * Copyright (c) 2009 Anyware Technologies and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Sierra Wireless - initial API and implementation
+ *
+ * $Id: AbstractRemoveAction.java,v 1.1 2009/08/20 17:22:09 bcabe Exp $
+ */
+package org.eclipse.pde.emfforms.editor.actions;
+
+import java.util.Collection;
+import org.eclipse.emf.edit.domain.EditingDomain;
+import org.eclipse.jface.action.*;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.jface.viewers.*;
+import org.eclipse.pde.emfforms.editor.EmfActionBarContributor;
+import org.eclipse.pde.emfforms.editor.EmfMasterDetailBlock;
+import org.eclipse.pde.emfforms.internal.Activator;
+import org.eclipse.pde.emfforms.internal.editor.IEmfFormsImages;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.*;
+
+public class CreateElementDropDownAction extends Action implements IMenuCreator {
+
+ private EmfMasterDetailBlock masterDetailBlock;
+
+ private Menu fMenu;
+
+ /** The create child actions. */
+ private Collection<IAction> createChildActions;
+
+ /** The create sibling actions */
+ protected Collection<IAction> createSiblingActions;
+
+ public CreateElementDropDownAction(EmfMasterDetailBlock masterDetailBlck) {
+ masterDetailBlock = masterDetailBlck;
+ fMenu = null;
+ setToolTipText("Create a new child/sibling element");
+ setImageDescriptor(ImageDescriptor.createFromURL(Activator.getDefault().getBundle().getResource(IEmfFormsImages.ADD_TOOLBAR_BUTTON)));
+ setMenuCreator(this);
+ }
+
+ public void dispose() {
+ // action is reused, can be called several times.
+ if (fMenu != null) {
+ fMenu.dispose();
+ fMenu = null;
+ }
+ }
+
+ public Menu getMenu(Menu parent) {
+ return null;
+ }
+
+ public Menu getMenu(Control parent) {
+ if (fMenu != null) {
+ fMenu.dispose();
+ }
+ fMenu = new Menu(parent);
+
+ updateActions();
+
+ // Add all CreateChild actions for the current selection
+ for (IAction createChildAction : createChildActions) {
+ addActionToMenu(fMenu, createChildAction);
+ }
+ // Add a separator if needed
+ if (!createChildActions.isEmpty() && !createSiblingActions.isEmpty()) {
+ new MenuItem(fMenu, SWT.SEPARATOR);
+ }
+ // Add all CreateSibling actions for the current selection
+ for (IAction createSiblingAction : createSiblingActions) {
+ addActionToMenu(fMenu, createSiblingAction);
+ }
+
+ return fMenu;
+ }
+
+ private void addActionToMenu(Menu parent, IAction action) {
+ ActionContributionItem item = new ActionContributionItem(action);
+ item.fill(parent, -1);
+ }
+
+ private void updateActions() {
+ // Query the new selection for appropriate new child/sibling descriptors
+ Collection<?> newChildDescriptors = null;
+ Collection<?> newSiblingDescriptors = null;
+
+ ISelection selection = masterDetailBlock.getTreeViewer().getSelection();
+ if (selection.isEmpty()) {
+ if (masterDetailBlock.getTreeViewer().getInput() != null) {
+ selection = new StructuredSelection(masterDetailBlock.getTreeViewer().getInput());
+ } else {
+ selection = new StructuredSelection(masterDetailBlock.getEditor().getCurrentEObject());
+ }
+ }
+ if (selection instanceof IStructuredSelection && ((IStructuredSelection) selection).size() == 1) {
+ Object object = ((IStructuredSelection) selection).getFirstElement();
+
+ EditingDomain domain = masterDetailBlock.getEditor().getEditingDomain();
+ newChildDescriptors = domain.getNewChildDescriptors(object, null);
+ newSiblingDescriptors = domain.getNewChildDescriptors(null, object);
+
+ // Generate actions for selection
+ createChildActions = ((EmfActionBarContributor) masterDetailBlock.getEditor().getActionBarContributor()).generateCreateChildActions(newChildDescriptors, selection);
+ createSiblingActions = ((EmfActionBarContributor) masterDetailBlock.getEditor().getActionBarContributor()).generateCreateSiblingActions(newSiblingDescriptors, selection);
+ }
+ }
+
+ @Override
+ public void run() {
+ updateActions();
+
+ // Find the first action that can be executed. Priority is for createChild actions
+ for (IAction createChildAction : createChildActions) {
+ if (createChildAction.isEnabled()) {
+ createChildAction.run();
+ return;
+ }
+ }
+ for (IAction createSiblingAction : createSiblingActions) {
+ if (createSiblingAction.isEnabled()) {
+ createSiblingAction.run();
+ return;
+ }
+ }
+ }
+}
