| /******************************************************************************* |
| * 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.examples.flow.model.commands; |
| |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.examples.flow.model.Activity; |
| import org.eclipse.gef.examples.flow.model.StructuredActivity; |
| import org.eclipse.gef.examples.flow.model.Transition; |
| |
| /** |
| * @author Daniel Lee |
| */ |
| public class AddAndAssignSourceCommand extends Command { |
| |
| private StructuredActivity parent; |
| private Activity child; |
| private Activity source; |
| private Transition transition; |
| |
| /** |
| * @see org.eclipse.gef.commands.Command#canExecute() |
| */ |
| public boolean canExecute() { |
| for (int i = 0; i < source.getOutgoingTransitions().size(); i++) { |
| Activity target = ((Transition) source.getOutgoingTransitions() |
| .get(i)).target; |
| if (target.equals(child)) |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * @see org.eclipse.gef.commands.Command#execute() |
| */ |
| public void execute() { |
| parent.addChild(child); |
| transition = new Transition(source, child); |
| } |
| |
| /** |
| * @see org.eclipse.gef.commands.Command#redo() |
| */ |
| public void redo() { |
| source.addOutput(transition); |
| child.addInput(transition); |
| parent.addChild(child); |
| } |
| |
| /** |
| * Sets the parent ActivityDiagram |
| * |
| * @param sa |
| * the parent |
| */ |
| public void setParent(StructuredActivity sa) { |
| parent = sa; |
| } |
| |
| /** |
| * Sets the Activity to create |
| * |
| * @param activity |
| * the Activity to create |
| */ |
| public void setChild(Activity activity) { |
| child = activity; |
| } |
| |
| /** |
| * Sets the source to the passed activity |
| * |
| * @param activity |
| * the source |
| */ |
| public void setSource(Activity activity) { |
| source = activity; |
| } |
| |
| /** |
| * @see org.eclipse.gef.commands.Command#undo() |
| */ |
| public void undo() { |
| source.removeOutput(transition); |
| child.removeInput(transition); |
| parent.removeChild(child); |
| } |
| |
| } |