| /******************************************************************************* |
| * Copyright (c) 2006, 2007 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.ui.tests.menus; |
| |
| import java.util.Map; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.commands.IElementUpdater; |
| import org.eclipse.ui.commands.ICommandService; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| import org.eclipse.ui.menus.UIElement; |
| |
| /** |
| * @since 3.3 |
| * |
| */ |
| public class HelloUpdateHandler extends AbstractHandler implements |
| IElementUpdater { |
| |
| private String myLabelState = null; |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent) |
| */ |
| public Object execute(ExecutionEvent event) throws ExecutionException { |
| IWorkbenchWindow window = HandlerUtil |
| .getActiveWorkbenchWindowChecked(event); |
| |
| MessageDialog.openInformation(window.getShell(), "Hello", |
| "Hello label update command!"); |
| myLabelState = "My New Item"; |
| ICommandService cs = (ICommandService) window |
| .getService(ICommandService.class); |
| cs.refreshElements(event.getCommand().getId(), null); |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.commands.ICallbackUpdater#updateCallback(org.eclipse.core.runtime.IAdaptable, |
| * java.util.Map) |
| */ |
| public void updateElement(UIElement element, Map parameters) { |
| if (myLabelState == null) { |
| return; |
| } |
| element.setText(myLabelState); |
| } |
| } |