| /****************************************************************************** |
| * 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 API and implementation |
| ****************************************************************************/ |
| |
| package org.eclipse.gmf.examples.runtime.diagram.logic.internal.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.gmf.examples.runtime.diagram.logic.semantic.InputTerminal; |
| import org.eclipse.gmf.examples.runtime.diagram.logic.semantic.OutputTerminal; |
| import org.eclipse.gmf.examples.runtime.diagram.logic.semantic.Wire; |
| 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; |
| |
| /** |
| * Command to change the source or target of a wire. |
| * |
| * @author ldamus |
| */ |
| public class ReorientWireCommand |
| extends EditElementCommand { |
| |
| /** |
| * The reorient direction. |
| */ |
| private final int reorientDirection; |
| |
| /** |
| * The relationship's new source or target. |
| */ |
| private final EObject newEnd; |
| |
| /** |
| * Constructs a new command. |
| * |
| * @param request |
| * the reorient relationship request |
| */ |
| public ReorientWireCommand(ReorientRelationshipRequest request) { |
| super(request.getLabel(), request.getRelationship(), request); |
| this.reorientDirection = request.getDirection(); |
| this.newEnd = request.getNewRelationshipEnd(); |
| } |
| |
| /** |
| * Reorients the wire. |
| */ |
| protected CommandResult doExecuteWithResult(IProgressMonitor monitor, |
| IAdaptable info) |
| throws ExecutionException { |
| |
| Wire wire = (Wire) getElementToEdit(); |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_SOURCE) { |
| wire.setSource((OutputTerminal) newEnd); |
| |
| } else if (reorientDirection == ReorientRelationshipRequest.REORIENT_TARGET) { |
| wire.setTarget((InputTerminal) newEnd); |
| } |
| return CommandResult.newOKCommandResult(wire); |
| } |
| |
| /** |
| * The source can be changed to a new output terminal. The target can be |
| * changed to a new target terminal. |
| */ |
| public boolean canExecute() { |
| |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_SOURCE |
| && !(newEnd instanceof OutputTerminal)) { |
| return false; |
| } |
| |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_TARGET |
| && !(newEnd instanceof InputTerminal)) { |
| return false; |
| } |
| return super.canExecute(); |
| } |
| } |