| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.ui.common.sash; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.ListenerList; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.jface.util.SafeRunnable; |
| import org.eclipse.jface.viewers.IPostSelectionProvider; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ISelectionChangedListener; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.SelectionChangedEvent; |
| import org.eclipse.ui.IEditorPart; |
| |
| /** |
| * @author mengbo |
| */ |
| public class SashEditorSelectionProvider implements IPostSelectionProvider { |
| |
| /** |
| * Registered selection changed listeners (element type: |
| * <code>ISelectionChangedListener</code>). |
| */ |
| private ListenerList _listeners = new ListenerList(ListenerList.IDENTITY); |
| |
| private ListenerList _postSelectionChangedListeners = new ListenerList(ListenerList.IDENTITY); |
| |
| /** |
| * The multi-page editor. |
| */ |
| private SashEditorPart _sashEditor; |
| |
| /** |
| * Creates a selection provider for the given multi-page editor. |
| * |
| * @param sashEditor |
| * the multi-page editor |
| */ |
| public SashEditorSelectionProvider(SashEditorPart sashEditor) { |
| Assert.isNotNull(sashEditor); |
| this._sashEditor = sashEditor; |
| } |
| |
| /* |
| * (non-Javadoc) Method declared on <code>ISelectionProvider</code>. |
| */ |
| public void addSelectionChangedListener(ISelectionChangedListener listener) { |
| _listeners.add(listener); |
| } |
| |
| /** |
| * Notifies all registered selection changed listeners that the editor's |
| * selection has changed. Only listeners registered at the time this method |
| * is called are notified. |
| * |
| * @param event |
| * the selection changed event |
| */ |
| public void fireSelectionChanged(final SelectionChangedEvent event) { |
| Object[] listeners = this._listeners.getListeners(); |
| for (int i = 0; i < listeners.length; ++i) { |
| final ISelectionChangedListener l = (ISelectionChangedListener) listeners[i]; |
| SafeRunner.run(new SafeRunnable() { |
| public void run() { |
| l.selectionChanged(event); |
| } |
| }); |
| } |
| } |
| |
| /** |
| * Returns the sash editor. |
| */ |
| public SashEditorPart getSashEditor() { |
| return _sashEditor; |
| } |
| |
| /* |
| * (non-Javadoc) Method declared on <code>ISelectionProvider</code>. |
| */ |
| public ISelection getSelection() { |
| IEditorPart activeEditor = _sashEditor.getActiveEditor(); |
| if (activeEditor != null) { |
| ISelectionProvider selectionProvider = activeEditor.getSite() |
| .getSelectionProvider(); |
| if (selectionProvider != null) |
| return selectionProvider.getSelection(); |
| } |
| return null; |
| } |
| |
| /* |
| * (non-JavaDoc) Method declaed on <code>ISelectionProvider</code>. |
| */ |
| public void removeSelectionChangedListener( |
| ISelectionChangedListener listener) { |
| _listeners.remove(listener); |
| } |
| |
| /* |
| * (non-Javadoc) Method declared on <code>ISelectionProvider</code>. |
| */ |
| public void setSelection(ISelection selection) { |
| IEditorPart activeEditor = _sashEditor.getActiveEditor(); |
| if (activeEditor != null) { |
| ISelectionProvider selectionProvider = activeEditor.getSite() |
| .getSelectionProvider(); |
| if (selectionProvider != null) |
| selectionProvider.setSelection(selection); |
| } |
| } |
| |
| public void addPostSelectionChangedListener( |
| ISelectionChangedListener listener) { |
| _postSelectionChangedListeners.add(listener); |
| } |
| |
| public void removePostSelectionChangedListener( |
| ISelectionChangedListener listener) { |
| _postSelectionChangedListeners.remove(listener); |
| } |
| |
| /** |
| * Notifies any post selection listeners that a post selection event has |
| * been received. Only listeners registered at the time this method is |
| * called are notified. |
| * |
| * @param event |
| * a selection changed event |
| * |
| * @see #addPostSelectionChangedListener(ISelectionChangedListener) |
| */ |
| public void firePostSelectionChanged(final SelectionChangedEvent event) { |
| Object[] listeners = _postSelectionChangedListeners.getListeners(); |
| for (int i = 0; i < listeners.length; ++i) { |
| final ISelectionChangedListener l = (ISelectionChangedListener) listeners[i]; |
| SafeRunnable.run(new SafeRunnable() { |
| public void run() { |
| l.selectionChanged(event); |
| } |
| }); |
| } |
| } |
| } |