| /******************************************************************************* |
| * Copyright (c) 2005, 2007 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.ExecutionException; |
| import org.eclipse.core.commands.operations.IUndoContext; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.widgets.Canvas; |
| |
| /** |
| * An operation that adds a box. |
| */ |
| public class MoveBoxOperation extends BoxOperation { |
| |
| /* |
| * The point the box should move to/from. |
| */ |
| private Point origin; |
| private Point target; |
| |
| public MoveBoxOperation(String label, IUndoContext context, Box box, Canvas canvas, Point newOrigin) { |
| super(label, context, null, box, canvas); |
| origin = new Point(box.x1, box.y1); |
| target = new Point(newOrigin.x, newOrigin.y); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.core.commands.operations.IUndoableOperation#execute(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable) |
| */ |
| public IStatus execute(IProgressMonitor monitor, IAdaptable info) |
| throws ExecutionException { |
| if (box==null) { |
| throw new ExecutionException("box ix null"); |
| } |
| box.move(target); |
| canvas.redraw(); |
| return Status.OK_STATUS; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.core.commands.operations.IUndoableOperation#redo(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable) |
| */ |
| public IStatus redo(IProgressMonitor monitor, IAdaptable info) |
| throws ExecutionException { |
| return execute(monitor, info); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.core.commands.operations.IUndoableOperation#undo(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable) |
| */ |
| public IStatus undo(IProgressMonitor monitor, IAdaptable info) |
| throws ExecutionException { |
| if (box==null) { |
| throw new ExecutionException("box ix null"); |
| } |
| box.move(origin); |
| canvas.redraw(); |
| return Status.OK_STATUS; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.core.commands.operations.IUndoableOperation#getLabel() |
| */ |
| public String getLabel() { |
| final StringBuffer stringBuffer = new StringBuffer(); |
| stringBuffer.append(super.getLabel()); |
| stringBuffer.append("["); //$NON-NLS-1$ |
| stringBuffer.append("("); //$NON-NLS-1$ |
| stringBuffer.append(new Integer(origin.x).toString()); |
| stringBuffer.append(", "); //$NON-NLS-1$ |
| stringBuffer.append(new Integer(origin.y).toString()); |
| stringBuffer.append(')'); |
| stringBuffer.append(", "); //$NON-NLS-1$ |
| stringBuffer.append("("); //$NON-NLS-1$ |
| stringBuffer.append(new Integer(target.x).toString()); |
| stringBuffer.append(", "); //$NON-NLS-1$ |
| stringBuffer.append(new Integer(target.y).toString()); |
| stringBuffer.append(')'); |
| stringBuffer.append(']'); |
| return stringBuffer.toString(); |
| } |
| |
| } |