| /******************************************************************************* |
| * Copyright (c) 2005 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.bpel.common.ui.composite; |
| |
| import org.eclipse.jface.viewers.ISelectionChangedListener; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.SelectionChangedEvent; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.IEditorReference; |
| import org.eclipse.ui.IEditorSite; |
| import org.eclipse.ui.IKeyBindingService; |
| import org.eclipse.ui.internal.EditorSite; |
| import org.eclipse.ui.internal.WorkbenchPage; |
| import org.eclipse.ui.internal.registry.EditorDescriptor; |
| |
| /** |
| * TODO: do we really want/need to extend EditorSite or do |
| * we want to implement our own like the MultiPageEditor does? |
| */ |
| public class CompositeEditorSite extends EditorSite { |
| |
| protected IEditorSite parent; |
| protected CompositeEditorKeyBindingService keyBindingService; |
| private ISelectionProvider selectionProvider; |
| private ISelectionChangedListener selectionChangedListener; |
| |
| public CompositeEditorSite(IEditorSite parent, IEditorReference ref, IEditorPart editor, WorkbenchPage page, EditorDescriptor desc) { |
| super(ref, editor, page, desc); |
| this.parent = parent; |
| } |
| |
| /** |
| * Returns a CompositeEditorKeybinding for an embedded editor. |
| */ |
| @Override |
| public IKeyBindingService getKeyBindingService() { |
| if (keyBindingService == null) { |
| keyBindingService = new CompositeEditorKeyBindingService(parent.getKeyBindingService()); |
| } |
| return keyBindingService; |
| } |
| |
| /** |
| * Activate the key bindings for an embedded editor. |
| */ |
| public void activate() { |
| if (keyBindingService == null) { |
| return; |
| } |
| keyBindingService.activate(); |
| // The workbench only calls updateActiveKeyBindingService() when a workbench part |
| // becomes active. We have to explicitly call it since for the |
| // workbench the active part has not changed. |
| |
| // TODO: find an alternative in Eclipse 3.0 for the following call: |
| // ((Workbench) getWorkbenchWindow().getWorkbench()).updateActiveKeyBindingService(); |
| } |
| |
| /** |
| * Deactivate the key bindings for an embedded editor. |
| */ |
| public void deactivate() { |
| if (keyBindingService == null) { |
| return; |
| } |
| keyBindingService.deactivate(); |
| } |
| |
| /** |
| * The <code>CompositeEditorSite</code> implementation of this |
| * <code>IWorkbenchPartSite</code> method remembers the selection provider, |
| * and also hooks a listener on it, which calls <code>handleSelectionChanged</code> |
| * when a selection changed event occurs. |
| * |
| * @see #handleSelectionChanged |
| */ |
| @Override |
| public void setSelectionProvider(ISelectionProvider provider) { |
| ISelectionProvider oldSelectionProvider = selectionProvider; |
| selectionProvider = provider; |
| if (oldSelectionProvider != null) { |
| oldSelectionProvider.removeSelectionChangedListener(getSelectionChangedListener()); |
| } |
| if (selectionProvider != null) { |
| selectionProvider.addSelectionChangedListener(getSelectionChangedListener()); |
| } |
| } |
| |
| /** |
| * Returns the selection changed listener which listens to the embedded editor's selection |
| * changes, and calls <code>handleSelectionChanged</code>. |
| * |
| * @return the selection changed listener |
| */ |
| private ISelectionChangedListener getSelectionChangedListener() { |
| if (selectionChangedListener == null) { |
| selectionChangedListener = new ISelectionChangedListener() { |
| public void selectionChanged(SelectionChangedEvent event) { |
| CompositeEditorSite.this.handleSelectionChanged(event); |
| } |
| }; |
| } |
| return selectionChangedListener; |
| } |
| |
| /** |
| * Handles a selection changed event from the embedded editor. |
| * The default implementation gets the selection provider from the |
| * composite editor's site, and calls <code>fireSelectionChanged</code> |
| * on it (only if it is an instance of <code>CompositeEditorSelectionProvider</code>), |
| * passing a new event object. |
| * <p> |
| * Subclasses may extend or reimplement this method. |
| * </p> |
| * |
| * @param event the event |
| */ |
| protected void handleSelectionChanged(SelectionChangedEvent event) { |
| ISelectionProvider parentProvider = parent.getSelectionProvider(); |
| if (parentProvider instanceof CompositeEditorSelectionProvider) { |
| SelectionChangedEvent newEvent = new SelectionChangedEvent(parentProvider, event.getSelection()); |
| ((CompositeEditorSelectionProvider) parentProvider).fireSelectionChanged(newEvent); |
| } |
| } |
| |
| @Override |
| public ISelectionProvider getSelectionProvider() { |
| return selectionProvider; |
| } |
| |
| } |