| /******************************************************************************* |
| * Copyright (c) 2008-2011 Chair for Applied Software Engineering, |
| * Technische Universitaet Muenchen. |
| * 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: |
| ******************************************************************************/ |
| package org.eclipse.emf.ecp.common.commands; |
| |
| import org.eclipse.emf.common.util.EList; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.EReference; |
| import org.eclipse.emf.edit.command.RemoveCommand; |
| import org.eclipse.emf.edit.command.SetCommand; |
| import org.eclipse.emf.edit.domain.EditingDomain; |
| |
| /** |
| * Command to delete a reference. |
| * |
| * @author helming |
| * @author shterev |
| */ |
| public final class DeleteReferenceCommand { |
| private EReference reference; |
| private EObject modelElement; |
| private EObject opposite; |
| private final EditingDomain editingDomain; |
| |
| /** |
| * Default constructor. |
| * |
| * @param modelElement the initiating modelelement |
| * @param reference the reference |
| * @param opposite the element on the other side - the element to be removed. |
| * @param editingDomain the editing domain to execute the command. |
| */ |
| public DeleteReferenceCommand(EObject modelElement, EReference reference, EObject opposite, |
| EditingDomain editingDomain) { |
| this.modelElement = modelElement; |
| this.reference = reference; |
| this.opposite = opposite; |
| this.editingDomain = editingDomain; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void run() { |
| Object object = modelElement.eGet(reference); |
| |
| // TODO: Ask user in the following two cases if he really wants to delete the model element |
| // if (reference.isContainer()) { |
| // opposite.getProject().addModelElement(modelElement); |
| // return; |
| // } |
| // if (reference.isContainment()) { |
| // modelElement.getProject().addModelElement(opposite); |
| // return; |
| // } |
| if (object instanceof EList<?>) { |
| @SuppressWarnings("unchecked") |
| EList<EObject> list = (EList<EObject>) object; |
| RemoveCommand removeCommand = new RemoveCommand(editingDomain, list, opposite); |
| editingDomain.getCommandStack().execute(removeCommand); |
| return; |
| } else { |
| SetCommand setCommand = new SetCommand(editingDomain, modelElement, reference, null); |
| editingDomain.getCommandStack().execute(setCommand); |
| return; |
| } |
| |
| } |
| } |