| /******************************************************************************* |
| * Copyright (c) 2004, 2005 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.jsf.facesconfig.ui.pageflow.command; |
| |
| import java.util.EventObject; |
| |
| import org.eclipse.emf.common.command.BasicCommandStack; |
| import org.eclipse.emf.common.command.CommandStackListener; |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.commands.CommandStack; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.wst.sse.core.StructuredModelManager; |
| import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel; |
| import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument; |
| |
| /** |
| * This adapter is used to let editor be able to monitor EMF CommandStack, e.g., |
| * in StructuredTextEditor, using GEF CommandStack. |
| * |
| * @author xgzhang |
| * @version |
| */ |
| public class EMFCommandStackGEFAdapter extends CommandStack implements |
| CommandStackListener { |
| private org.eclipse.emf.common.command.BasicCommandStack emfCommandStack; |
| private IStructuredModel model; |
| |
| /** |
| * @param doc |
| */ |
| public EMFCommandStackGEFAdapter (IDocument doc) { |
| |
| super(); |
| |
| model = StructuredModelManager.getModelManager().getExistingModelForEdit(doc); |
| |
| if (model == null) { |
| model = StructuredModelManager.getModelManager().getModelForEdit((IStructuredDocument) doc); |
| } |
| |
| emfCommandStack = ((BasicCommandStack) this.model.getUndoManager().getCommandStack()); |
| emfCommandStack.addCommandStackListener(this); |
| } |
| |
| |
| @Override |
| public void dispose() { |
| model.releaseFromEdit(); |
| super.dispose(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#canRedo() |
| */ |
| public boolean canRedo() { |
| if (emfCommandStack == null) { |
| return false; |
| } |
| return emfCommandStack.canRedo(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#canUndo() |
| */ |
| public boolean canUndo() { |
| if (emfCommandStack == null) { |
| return false; |
| } |
| return emfCommandStack.canUndo(); |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#execute(org.eclipse.gef.commands.Command) |
| */ |
| public void execute(Command command) { |
| if (!(command instanceof EMFCommandGEFAdapter)) { |
| return; |
| } |
| |
| org.eclipse.emf.common.command.Command emfCommand = ((EMFCommandGEFAdapter) command) |
| .getEMFCommand(); |
| if (emfCommand != null) { |
| emfCommandStack.execute(emfCommand); |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#flush() |
| */ |
| public void flush() { |
| if (emfCommandStack == null) { |
| return; |
| } |
| emfCommandStack.flush(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#getRedoCommand() |
| */ |
| public Command getRedoCommand() { |
| if (emfCommandStack == null || emfCommandStack.getRedoCommand() == null) { |
| return null; |
| } |
| |
| return new EMFCommandGEFAdapter(emfCommandStack.getRedoCommand()); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#getUndoCommand() |
| */ |
| public Command getUndoCommand() { |
| if (emfCommandStack == null || emfCommandStack.getUndoCommand() == null) { |
| return null; |
| } |
| |
| return new EMFCommandGEFAdapter(emfCommandStack.getUndoCommand()); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#isDirty() |
| */ |
| public boolean isDirty() { |
| if (emfCommandStack == null) { |
| return false; |
| } |
| return emfCommandStack.isSaveNeeded(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#markSaveLocation() |
| */ |
| public void markSaveLocation() { |
| if (emfCommandStack == null) { |
| return; |
| } |
| emfCommandStack.saveIsDone(); |
| super.markSaveLocation(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#redo() |
| */ |
| public void redo() { |
| if (emfCommandStack == null) { |
| return; |
| } |
| emfCommandStack.redo(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.commands.CommandStack#undo() |
| */ |
| public void undo() { |
| if (emfCommandStack == null) { |
| return; |
| } |
| emfCommandStack.undo(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStackListener#commandStackChanged(java.util.EventObject) |
| */ |
| public void commandStackChanged(EventObject event) { |
| this.notifyListeners(); |
| } |
| |
| } |