| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 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 implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.authoring.gef.commands; |
| |
| import org.eclipse.draw2d.AbsoluteBendpoint; |
| import org.eclipse.draw2d.geometry.Point; |
| import org.eclipse.epf.authoring.gef.util.Validation; |
| import org.eclipse.epf.authoring.ui.AuthoringUIResources; |
| import org.eclipse.epf.diagram.model.Link; |
| import org.eclipse.epf.diagram.model.Node; |
| import org.eclipse.gef.commands.Command; |
| |
| /** |
| * @author Phong Nguyen Le |
| * @since 1.0 |
| */ |
| public class CreateLinkCommand extends Command { |
| |
| private Link link; |
| |
| private Node source, target; |
| |
| private Point targetEndPoint; |
| |
| private Point sourceEndPoint; |
| |
| private static final String LABEL = AuthoringUIResources.gef_createLinkCommand_label; |
| |
| public CreateLinkCommand(Link newObj, Node src) { |
| super(LABEL); |
| link = newObj; |
| source = src; |
| } |
| |
| public boolean canExecute() { |
| boolean result = source != null && target != null && link != null; |
| if (!result) |
| return result; |
| |
| String msg = Validation.checkConnect(source, target, link); |
| if (msg != null) { |
| return false; |
| } |
| return true; |
| } |
| |
| public void execute() { |
| if (source == target) { |
| link.getBendpoints().add( |
| new AbsoluteBendpoint(source.getLocation().getTranslated( |
| -10, 10))); |
| link.getBendpoints().add( |
| new AbsoluteBendpoint(source.getLocation().getTranslated( |
| -10, -10))); |
| link.getBendpoints().add( |
| new AbsoluteBendpoint(source.getLocation().getTranslated( |
| 10, -10))); |
| } |
| |
| link.setTargetEndPoint(targetEndPoint); |
| link.setSourceEndPoint(sourceEndPoint); |
| link.setSource(source); |
| link.setTarget(target); |
| } |
| |
| public void setTarget(Node target) { |
| this.target = target; |
| } |
| |
| public void setTargetEndPoint(Point p) { |
| targetEndPoint = p; |
| } |
| |
| public void setSourceEndPoint(Point p) { |
| sourceEndPoint = p; |
| } |
| |
| public Point getTargetEndPoint() { |
| return targetEndPoint; |
| } |
| |
| /** |
| * @return Returns the sourceEndPoint. |
| */ |
| public Point getSourceEndPoint() { |
| return sourceEndPoint; |
| } |
| |
| public void undo() { |
| link.setSourceEndPoint(null); |
| link.setTargetEndPoint(null); |
| link.setSource(null); |
| link.setTarget(null); |
| if (source == target) { |
| link.getBendpoints().clear(); |
| } |
| } |
| |
| } |