| /******************************************************************************* |
| * Copyright (c) 2005 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.examples.undo; |
| |
| import org.eclipse.core.commands.operations.AbstractOperation; |
| import org.eclipse.core.commands.operations.IUndoContext; |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.swt.widgets.Canvas; |
| |
| /** |
| * An undoable operation that represents a change to a box. |
| */ |
| public abstract class BoxOperation extends AbstractOperation { |
| |
| /* |
| * The box involved in the operation |
| */ |
| Box box; |
| |
| /* |
| * The group of boxes involved in the operation |
| */ |
| Boxes boxes; |
| |
| /* |
| * The canvas to update or draw on during an operation |
| */ |
| Canvas canvas; |
| |
| public BoxOperation(String label, IUndoContext undoContext, Boxes boxes, Box box, Canvas canvas) { |
| super (label); |
| addContext(undoContext); |
| this.boxes = boxes; |
| this.box = box; |
| this.canvas = canvas; |
| } |
| |
| /* |
| * Show the specified prompt in an info dialog. |
| */ |
| void showMessage(String message) { |
| MessageDialog.openInformation(canvas.getShell(), |
| UndoExampleMessages.BoxView_Title, message); |
| } |
| } |