/******************************************************************************* | |
* Copyright (c) 2005, 2012 IBM Corporation and others. | |
* All rights reserved. This program and the accompanying materials | |
* are made available under the terms of the Eclipse Public License 2.0 | |
* which accompanies this distribution, and is available at | |
* https://www.eclipse.org/legal/epl-2.0/ | |
* | |
* SPDX-License-Identifier: EPL-2.0 | |
* | |
* Contributors: | |
* IBM Corporation - initial API and implementation | |
*******************************************************************************/ | |
package org.eclipse.bpel.ui.commands; | |
import org.eclipse.bpel.common.ui.editmodel.AbstractEditModelCommand; | |
import org.eclipse.emf.ecore.resource.Resource; | |
import org.eclipse.jface.viewers.ISelection; | |
import org.eclipse.jface.viewers.ISelectionProvider; | |
/** | |
* A Command that knows how to capture and restore a selection in the EditPartViewer. | |
* | |
* NOTE: This won't work with an EditPartViewer or a MultiViewerSelectionProvider. | |
* However, it will work with an AdaptingSelectionProvider. | |
* | |
* This is used to restore the user context when a DeleteSelectedAction is undone. | |
*/ | |
public class RestoreSelectionCommand extends AbstractEditModelCommand { | |
ISelectionProvider selectionProvider; | |
ISelection storedSelection; | |
boolean restoreOnUndo, restoreOnRedo; | |
public RestoreSelectionCommand(ISelectionProvider selectionProvider, boolean restoreOnUndo, | |
boolean restoreOnRedo) | |
{ | |
this.selectionProvider = selectionProvider; | |
this.restoreOnUndo = restoreOnUndo; | |
this.restoreOnRedo = restoreOnRedo; | |
} | |
// This method may be called directly before execute() is called. Otherwise, | |
// it will be called by execute(). | |
public void captureSelection() { | |
storedSelection = selectionProvider.getSelection(); | |
} | |
@Override | |
public void execute() { | |
if (storedSelection == null) captureSelection(); | |
} | |
protected void restoreSelection() { | |
selectionProvider.setSelection(storedSelection); | |
} | |
@Override | |
public void undo() { if (restoreOnUndo) restoreSelection(); } | |
@Override | |
public void redo() { if (restoreOnRedo) restoreSelection(); } | |
@Override | |
public Resource[] getResources() { return EMPTY_RESOURCE_ARRAY; } | |
@Override | |
public Resource[] getModifiedResources() { return EMPTY_RESOURCE_ARRAY; } | |
} |