| /******************************************************************************* |
| * Copyright (c) 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.internal.handlers; |
| |
| import org.eclipse.core.expressions.Expression; |
| import org.eclipse.ui.ISourceProvider; |
| import org.eclipse.ui.IWorkbench; |
| import org.eclipse.ui.IWorkbenchPartSite; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.commands.ICommandService; |
| import org.eclipse.ui.handlers.IHandlerService; |
| import org.eclipse.ui.internal.expressions.ActivePartExpression; |
| import org.eclipse.ui.internal.expressions.WorkbenchWindowExpression; |
| import org.eclipse.ui.internal.services.ISourceProviderService; |
| import org.eclipse.ui.services.AbstractServiceFactory; |
| import org.eclipse.ui.services.IEvaluationService; |
| import org.eclipse.ui.services.IServiceLocator; |
| |
| /** |
| * @since 3.4 |
| * |
| */ |
| public class HandlerServiceFactory extends AbstractServiceFactory { |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.services.AbstractServiceFactory#create(java.lang.Class, |
| * org.eclipse.ui.services.IServiceLocator, |
| * org.eclipse.ui.services.IServiceLocator) |
| */ |
| public Object create(Class serviceInterface, IServiceLocator parentLocator, |
| IServiceLocator locator) { |
| if (!IHandlerService.class.equals(serviceInterface)) { |
| return null; |
| } |
| final IWorkbench wb = (IWorkbench) locator.getService(IWorkbench.class); |
| if (wb == null) { |
| return null; |
| } |
| |
| Object parent = parentLocator.getService(serviceInterface); |
| if (parent == null) { |
| ICommandService commands = (ICommandService) locator |
| .getService(ICommandService.class); |
| IEvaluationService evals = (IEvaluationService) locator |
| .getService(IEvaluationService.class); |
| HandlerService handlerService = new HandlerService(commands, evals); |
| handlerService.readRegistry(); |
| fillInSources(locator, handlerService); |
| return handlerService; |
| } |
| |
| final IWorkbenchWindow window = (IWorkbenchWindow) locator |
| .getService(IWorkbenchWindow.class); |
| final IWorkbenchPartSite site = (IWorkbenchPartSite) locator |
| .getService(IWorkbenchPartSite.class); |
| if (site == null) { |
| Expression exp = new WorkbenchWindowExpression(window); |
| return new SlaveHandlerService((IHandlerService) parent, exp); |
| } |
| |
| if (parent instanceof SlaveHandlerService) { |
| Expression parentExp = ((SlaveHandlerService) parent) |
| .getDefaultExpression(); |
| if (parentExp instanceof ActivePartExpression) { |
| return new NestableHandlerService((IHandlerService) parent, |
| parentExp); |
| } |
| } |
| |
| Expression exp = new ActivePartExpression(site.getPart()); |
| return new SlaveHandlerService((IHandlerService) parent, exp); |
| } |
| |
| /** |
| * @param handlerService |
| */ |
| private void fillInSources(IServiceLocator locator, |
| HandlerService handlerService) { |
| ISourceProviderService sps = (ISourceProviderService) locator |
| .getService(ISourceProviderService.class); |
| ISourceProvider[] sourceProviders = sps.getSourceProviders(); |
| for (int i = 0; i < sourceProviders.length; i++) { |
| handlerService.addSourceProvider(sourceProviders[i]); |
| } |
| } |
| } |