| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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.gef.ui.actions; |
| |
| import com.ibm.icu.text.MessageFormat; |
| |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.ISharedImages; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.actions.ActionFactory; |
| |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.internal.GEFMessages; |
| |
| /** |
| * An action to undo the last command. |
| */ |
| public class UndoAction extends StackAction { |
| |
| /** |
| * Creates an <code>UndoAction</code> and associates it with the given |
| * editor. |
| * |
| * @param editor |
| * The editor this action is associated with. |
| */ |
| public UndoAction(IEditorPart editor) { |
| super(editor); |
| } |
| |
| /** |
| * Creates an <code>UndoAction</code> and associates it with the given |
| * editor. |
| * |
| * @param part |
| * The workbench part this action is associated with. |
| */ |
| public UndoAction(IWorkbenchPart part) { |
| super(part); |
| } |
| |
| /** |
| * @see org.eclipse.gef.ui.actions.WorkbenchPartAction#calculateEnabled() |
| */ |
| protected boolean calculateEnabled() { |
| return getCommandStack().canUndo(); |
| } |
| |
| /** |
| * Initializes this action's text and images. |
| */ |
| protected void init() { |
| super.init(); |
| setToolTipText(MessageFormat.format(GEFMessages.UndoAction_Tooltip, |
| new Object[] { "" }).trim()); //$NON-NLS-1$ |
| setText(MessageFormat.format(GEFMessages.UndoAction_Label, |
| new Object[] { "" }).trim() //$NON-NLS-1$ |
| ); |
| setId(ActionFactory.UNDO.getId()); |
| |
| ISharedImages sharedImages = PlatformUI.getWorkbench() |
| .getSharedImages(); |
| setImageDescriptor(sharedImages |
| .getImageDescriptor(ISharedImages.IMG_TOOL_UNDO)); |
| setDisabledImageDescriptor(sharedImages |
| .getImageDescriptor(ISharedImages.IMG_TOOL_UNDO_DISABLED)); |
| } |
| |
| /** |
| * Refreshes this action's text to use the last executed command's label. |
| */ |
| protected void refresh() { |
| Command undoCmd = getCommandStack().getUndoCommand(); |
| setToolTipText(MessageFormat.format(GEFMessages.UndoAction_Tooltip, |
| new Object[] { getLabelForCommand(undoCmd) }).trim()); |
| setText(MessageFormat.format(GEFMessages.UndoAction_Label, |
| new Object[] { getLabelForCommand(undoCmd) }).trim()); |
| super.refresh(); |
| } |
| |
| /** |
| * Undoes the last command. |
| */ |
| public void run() { |
| getCommandStack().undo(); |
| } |
| |
| } |