| //------------------------------------------------------------------------------ |
| // 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 implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.diagram.wpdd.edit.commands; |
| |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.epf.diagram.model.Link; |
| import org.eclipse.epf.diagram.model.Node; |
| import org.eclipse.epf.diagram.wpdd.edit.policies.DiagramBaseItemSemanticEditPolicy; |
| import org.eclipse.gmf.runtime.common.core.command.CommandResult; |
| import org.eclipse.gmf.runtime.emf.type.core.commands.EditElementCommand; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest; |
| |
| /** |
| * @generated |
| */ |
| public class LinkReorientCommand extends EditElementCommand { |
| |
| /** |
| * @generated |
| */ |
| private final int reorientDirection; |
| |
| /** |
| * @generated |
| */ |
| private final EObject oldEnd; |
| |
| /** |
| * @generated |
| */ |
| private final EObject newEnd; |
| |
| /** |
| * @generated |
| */ |
| public LinkReorientCommand(ReorientRelationshipRequest request) { |
| super(request.getLabel(), request.getRelationship(), request); |
| reorientDirection = request.getDirection(); |
| oldEnd = request.getOldRelationshipEnd(); |
| newEnd = request.getNewRelationshipEnd(); |
| } |
| |
| /** |
| * @generated |
| */ |
| public boolean canExecute() { |
| if (!(getElementToEdit() instanceof Link)) { |
| return false; |
| } |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_SOURCE) { |
| return canReorientSource(); |
| } |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_TARGET) { |
| return canReorientTarget(); |
| } |
| return false; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected boolean canReorientSource() { |
| if (!(oldEnd instanceof Node && newEnd instanceof Node)) { |
| return false; |
| } |
| Node target = getLink().getTarget(); |
| if (!(getLink().eContainer() instanceof Node)) { |
| return false; |
| } |
| Node container = (Node) getLink().eContainer(); |
| return DiagramBaseItemSemanticEditPolicy.LinkConstraints |
| .canExistLink_3001(container, getNewSource(), target); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected boolean canReorientTarget() { |
| if (!(oldEnd instanceof Node && newEnd instanceof Node)) { |
| return false; |
| } |
| Node source = getLink().getSource(); |
| if (!(getLink().eContainer() instanceof Node)) { |
| return false; |
| } |
| Node container = (Node) getLink().eContainer(); |
| return DiagramBaseItemSemanticEditPolicy.LinkConstraints |
| .canExistLink_3001(container, source, getNewTarget()); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected CommandResult doExecuteWithResult(IProgressMonitor monitor, |
| IAdaptable info) throws ExecutionException { |
| if (!canExecute()) { |
| throw new ExecutionException( |
| "Invalid arguments in reorient link command"); //$NON-NLS-1$ |
| } |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_SOURCE) { |
| return reorientSource(); |
| } |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_TARGET) { |
| return reorientTarget(); |
| } |
| throw new IllegalStateException(); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected CommandResult reorientSource() throws ExecutionException { |
| getLink().setSource(getNewSource()); |
| return CommandResult.newOKCommandResult(getLink()); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected CommandResult reorientTarget() throws ExecutionException { |
| getLink().setTarget(getNewTarget()); |
| return CommandResult.newOKCommandResult(getLink()); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Link getLink() { |
| return (Link) getElementToEdit(); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Node getOldSource() { |
| return (Node) oldEnd; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Node getNewSource() { |
| return (Node) newEnd; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Node getOldTarget() { |
| return (Node) oldEnd; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Node getNewTarget() { |
| return (Node) newEnd; |
| } |
| } |