| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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.operations; |
| |
| import org.eclipse.core.commands.operations.IUndoContext; |
| import org.eclipse.ui.IActionBars; |
| import org.eclipse.ui.IWorkbenchPartSite; |
| import org.eclipse.ui.actions.ActionFactory; |
| import org.eclipse.ui.actions.ActionGroup; |
| |
| /** |
| * <p> |
| * UndoRedoActionGroup provides standard undo and redo action handlers for a |
| * workbench part site. It supports filtering of undo or redo on a particular |
| * undo context. The undo context can be optionally pruned, which means the |
| * context will be flushed actively whenever an invalid operation is found on |
| * top of its history. This class may be instantiated by clients. |
| * </p> |
| * |
| * @since 3.1 |
| */ |
| public final class UndoRedoActionGroup extends ActionGroup { |
| |
| private UndoActionHandler undoActionHandler; |
| |
| private RedoActionHandler redoActionHandler; |
| |
| /** |
| * Construct an undo redo action group for the specified workbench part |
| * site, using the specified undo context. |
| * |
| * @param site |
| * the workbench part site that is creating the action group |
| * @param undoContext |
| * the undo context to be used for filtering the operation |
| * history |
| * @param pruneHistory |
| * a boolean that indicates whether the history for the specified |
| * context should be pruned whenever an invalid operation is |
| * encountered. |
| */ |
| public UndoRedoActionGroup(IWorkbenchPartSite site, |
| IUndoContext undoContext, boolean pruneHistory) { |
| |
| // create the undo action handler |
| undoActionHandler = new UndoActionHandler(site, undoContext); |
| undoActionHandler.setPruneHistory(pruneHistory); |
| |
| // create the redo action handler |
| redoActionHandler = new RedoActionHandler(site, undoContext); |
| redoActionHandler.setPruneHistory(pruneHistory); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.actions.ActionGroup#fillActionBars(org.eclipse.ui.IActionBars) |
| */ |
| public void fillActionBars(IActionBars actionBars) { |
| super.fillActionBars(actionBars); |
| if (undoActionHandler != null) { |
| actionBars.setGlobalActionHandler(ActionFactory.UNDO.getId(), |
| undoActionHandler); |
| actionBars.setGlobalActionHandler(ActionFactory.REDO.getId(), |
| redoActionHandler); |
| } |
| } |
| } |