| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 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 implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.library.edit.command; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| |
| import org.eclipse.emf.common.command.Command; |
| import org.eclipse.emf.ecore.resource.Resource; |
| import org.eclipse.epf.library.edit.LibraryEditPlugin; |
| import org.eclipse.epf.library.edit.util.ExtensionManager; |
| |
| /** |
| * @author Phong Nguyen Le |
| * @since 1.1 |
| */ |
| public class NestedCommandExcecutor { |
| private Command command; |
| private ArrayList<Command> nestedCommands; |
| |
| public NestedCommandExcecutor(Command command) { |
| this.command = command; |
| } |
| |
| public List<Command> getNestedCommands() { |
| if(nestedCommands == null) { |
| nestedCommands = new ArrayList<Command>(); |
| } |
| return nestedCommands; |
| } |
| |
| public void executeNestedCommands() { |
| List<INestedCommandProvider> nestedCommandProviders = ExtensionManager.getNestedCommandProviders(); |
| if(!nestedCommandProviders.isEmpty()) { |
| for (INestedCommandProvider cmdProvider : nestedCommandProviders) { |
| try { |
| Command cmd = cmdProvider.createNestedCommand(command); |
| if(cmd != null && cmd.canExecute()) { |
| cmd.execute(); |
| getNestedCommands().add(cmd); |
| } |
| } |
| catch(Exception e) { |
| LibraryEditPlugin.getDefault().getLogger().logError(e); |
| } |
| } |
| } |
| } |
| |
| public void undoNestedCommands() { |
| if(nestedCommands != null && !nestedCommands.isEmpty()) { |
| for(int i = nestedCommands.size() - 1; i > -1; i--) { |
| Command cmd = (Command) nestedCommands.get(i); |
| try { |
| if(cmd.canUndo()) { |
| cmd.undo(); |
| } |
| } |
| catch(Exception e) { |
| LibraryEditPlugin.getDefault().getLogger().logError(e); |
| } |
| finally { |
| try { cmd.dispose(); } catch(Exception e) {} |
| } |
| } |
| nestedCommands.clear(); |
| } |
| } |
| |
| public void dispose() { |
| if(nestedCommands != null && !nestedCommands.isEmpty()) { |
| for(int i = nestedCommands.size() - 1; i > -1; i--) { |
| Command cmd = (Command) nestedCommands.get(i); |
| try { cmd.dispose(); } catch(Exception e) {} |
| } |
| nestedCommands.clear(); |
| } |
| } |
| |
| public Collection<Resource> getModifiedResources() { |
| Collection<Resource> modifiedResources = new HashSet<Resource>(); |
| if(nestedCommands != null && !nestedCommands.isEmpty()) { |
| for(int i = nestedCommands.size() - 1; i > -1; i--) { |
| Command cmd = (Command) nestedCommands.get(i); |
| if(cmd instanceof IResourceAwareCommand) { |
| try { |
| Collection resources = ((IResourceAwareCommand)cmd).getModifiedResources(); |
| if(resources != null) { |
| modifiedResources.addAll(resources); |
| } |
| } |
| catch(Exception e) { |
| LibraryEditPlugin.getDefault().getLogger().logError(e); |
| } |
| } |
| } |
| } |
| return modifiedResources.isEmpty() ? Collections.EMPTY_SET : modifiedResources; |
| } |
| } |