| /***************************************************************************** |
| * Copyright (c) 2011 CEA LIST. |
| * |
| * 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: |
| * |
| * CEA LIST - Initial API and implementation |
| * |
| *****************************************************************************/ |
| package org.eclipse.papyrus.sysml.diagram.internalblock.helper.advice; |
| |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.eclipse.emf.common.util.BasicEList; |
| import org.eclipse.emf.common.util.EList; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.gmf.runtime.common.core.command.ICommand; |
| import org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyDependentsRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest; |
| import org.eclipse.gmf.runtime.notation.DecorationNode; |
| import org.eclipse.gmf.runtime.notation.View; |
| import org.eclipse.papyrus.sysml.diagram.internalblock.provider.ElementTypes; |
| import org.eclipse.papyrus.uml.diagram.common.util.CrossReferencerUtil; |
| import org.eclipse.uml2.uml.Classifier; |
| import org.eclipse.uml2.uml.NamedElement; |
| import org.eclipse.uml2.uml.Property; |
| import org.eclipse.uml2.uml.Type; |
| import org.eclipse.uml2.uml.UMLPackage; |
| |
| /** |
| * |
| * This advice is used to remove the view of the parts which become inconsistent when we change the type of the property |
| * |
| */ |
| public class PropertyHelperAdvice extends AbstractEditHelperAdvice { |
| |
| /** |
| * Returns the command to destroy the views of the parts which are not owned by the new type |
| * |
| * @see org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice#getBeforeSetCommand(org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest) |
| * |
| * @param request |
| * the request to modify the model |
| * @return |
| * the command to destroy the views of the parts which are not owned by the new type |
| * |
| */ |
| @Override |
| protected ICommand getBeforeSetCommand(SetRequest request) { |
| Type oldType = null; |
| Type newType = null; |
| |
| EObject elementToEdit = request.getElementToEdit(); |
| Set<View> viewsToDelete = new HashSet<View>(); |
| if ((elementToEdit instanceof Property) && (request.getFeature() == UMLPackage.eINSTANCE.getTypedElement_Type()) && ((request.getValue() == null) || (request.getValue() instanceof Type))) { |
| |
| Property propertyToEdit = (Property) elementToEdit; |
| |
| oldType = propertyToEdit.getType(); |
| newType = (Type) request.getValue(); |
| |
| if ((oldType != null) && (oldType instanceof Classifier) && ((request.getValue() == null) || (newType instanceof Classifier))) { |
| |
| EList<NamedElement> newTypeMembers = (newType != null) ? ((Classifier) newType).getMembers() : new BasicEList<NamedElement>(); |
| EList<NamedElement> oldTypeMembers = ((Classifier) oldType).getMembers(); |
| |
| // Remove members of the new type from the list. |
| // oldTypeMembers now contains the list of members for which views will become |
| // inconsistent (if shown in the propertyToEdit) after setting the new type. |
| Set<NamedElement> possiblyInconsistentMembers = new HashSet<NamedElement>(); |
| possiblyInconsistentMembers.addAll(oldTypeMembers); |
| possiblyInconsistentMembers.removeAll(newTypeMembers); |
| |
| if (!possiblyInconsistentMembers.isEmpty()) { |
| |
| Set<View> propertyToEditViews = null; |
| |
| // Parse the list of possibly inconsistent members |
| for (NamedElement possiblyInconsistentMember : possiblyInconsistentMembers) { |
| |
| // Retrieve views of the current possiblyInconsistentMember |
| Iterator<View> viewIt = CrossReferencerUtil.getCrossReferencingViews(possiblyInconsistentMember, ElementTypes.DIAGRAM_ID).iterator(); |
| while (viewIt.hasNext()) { |
| if (propertyToEditViews == null) { |
| propertyToEditViews = CrossReferencerUtil.getCrossReferencingViews(propertyToEdit, ElementTypes.DIAGRAM_ID); |
| } |
| |
| View possiblyInconsistentMemberView = viewIt.next(); |
| if (isConcerned(possiblyInconsistentMemberView, propertyToEditViews)) { |
| viewsToDelete.add(possiblyInconsistentMemberView); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| if ((viewsToDelete != null) && !(viewsToDelete.isEmpty())) { |
| DestroyDependentsRequest req = new DestroyDependentsRequest(request.getEditingDomain(), elementToEdit, false); |
| req.setClientContext(request.getClientContext()); |
| req.addParameters(request.getParameters()); |
| return req.getDestroyDependentsCommand(viewsToDelete); |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Tests if the view must be deleted |
| * |
| * @param view |
| * the view to test |
| * @param list |
| * the list of the property view |
| * @return |
| * <code>true</code> if the view need to be removed <code>false</code> if not |
| */ |
| protected boolean isConcerned(View view, Set<View> propertyViews) { |
| |
| EObject parentView = view.eContainer(); |
| if (parentView instanceof DecorationNode) { |
| parentView = parentView.eContainer(); |
| } |
| return propertyViews.contains(parentView); |
| |
| } |
| } |