| /******************************************************************************* |
| * 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.ui.IEditorPart; |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.jface.util.ListenerList; |
| import org.eclipse.jface.util.SafeRunnable; |
| import org.eclipse.jface.viewers.*; |
| |
| public class CompositeEditorSelectionProvider implements ISelectionProvider { |
| |
| /** |
| * Registered selection changed listeners (element type: |
| * <code>ISelectionChangedListener</code>). |
| */ |
| private ListenerList listeners = new ListenerList(); |
| |
| /** |
| * The composite editor. |
| */ |
| private CompositeEditor compositeEditor; |
| |
| /** |
| * Creates a selection provider for the given composite editor. |
| * |
| * @param compositeEditor the composite editor |
| */ |
| public CompositeEditorSelectionProvider(CompositeEditor compositeEditor) { |
| Assert.isNotNull(compositeEditor); |
| this.compositeEditor = compositeEditor; |
| } |
| |
| /* (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]; |
| |
| SafeRunnable.run(new SafeRunnable() { |
| public void run() { |
| l.selectionChanged(event); |
| } |
| @Override |
| public void handleException(Throwable e) { |
| super.handleException(e); |
| //If an unexpected exception happens, remove it |
| //to make sure the workbench keeps running. |
| removeSelectionChangedListener(l); |
| } |
| }); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * Method declared on <code>ISelectionProvider</code>. |
| */ |
| public ISelection getSelection() { |
| IEditorPart activeEditor = compositeEditor.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 = compositeEditor.getActiveEditor(); |
| if (activeEditor != null) { |
| ISelectionProvider selectionProvider = activeEditor.getSite().getSelectionProvider(); |
| if (selectionProvider != null) |
| selectionProvider.setSelection(selection); |
| } |
| } |
| } |