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/*****************************************************************************
* Copyright (c) 2011, 2015 CEA LIST, Christian W. Damus, 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:
* Yann Tanguy (CEA LIST) yann.tanguy@cea.fr - Initial API and implementation
* Christian W. Damus - bug 458685
* Christian W. Damus - bug 467016
* Christian W. Damus - bug 459701
*
*****************************************************************************/
package org.eclipse.papyrus.uml.service.types.helper;
import java.util.Map;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest;
import org.eclipse.papyrus.infra.services.edit.commands.IConfigureCommandFactory;
import org.eclipse.papyrus.infra.services.edit.service.ElementEditServiceUtils;
import org.eclipse.papyrus.infra.services.edit.service.IElementEditService;
import org.eclipse.papyrus.uml.elementtypesconfigurations.edithelper.DefaultUMLEditHelper;
import org.eclipse.papyrus.uml.tools.model.UmlUtils;
import org.eclipse.uml2.uml.Element;
/**
* <pre>
*
* Edit helper class for {@link Element}
*
* Expected behavior:
* - Removes any stereotype application before deletion
*
* The configure command allows contributions provided by the request parameters.
* </pre>
*/
public class ElementEditHelper extends DefaultUMLEditHelper {
/**
* Obtains an edit command, if available, from the Papyrus Element Edit Service.
*
* @param context
* the context of the edit (usually the element to be edited, if only one)
* @param request
* the edit request
* @return the command, which may be {@code null} if unavailable or possibly not executable even if available
*/
protected ICommand getEditServiceCommand(EObject context, IEditCommandRequest request) {
ICommand result = null;
IElementEditService provider = ElementEditServiceUtils.getCommandProvider(context);
if (provider != null) {
result = provider.getEditCommand(request);
}
return result;
}
/**
* {@inheritDoc}
*/
@Override
protected ICommand getConfigureCommand(ConfigureRequest req) {
if (req.getParameter(IConfigureCommandFactory.CONFIGURE_COMMAND_FACTORY_ID) != null) {
IConfigureCommandFactory factory = (IConfigureCommandFactory) req.getParameter(IConfigureCommandFactory.CONFIGURE_COMMAND_FACTORY_ID);
return factory.create(req);
}
return super.getConfigureCommand(req);
}
/**
* {@inheritDoc}
*/
@SuppressWarnings("unchecked")
@Override
protected Map<EClass, EReference> getDefaultContainmentFeatures() {
return super.getDefaultContainmentFeatures();
}
@Override
protected boolean approveRequest(IEditCommandRequest request) {
boolean result = super.approveRequest(request);
if (!result) {
if (request instanceof CreateElementRequest) {
// Bug 467016: Maybe the "containment" reference isn't actually a containment but subsets one?
// e.g., BehavioredClassifier::classifierBehavior subsets BehavioredClassifier::ownedBehavior
Object context = request.getEditHelperContext();
if (context instanceof EObject) {
EObject owner = (EObject) context;
EReference reference = getContainmentFeature((CreateElementRequest) request);
if ((reference != null) && reference.getEContainingClass().isSuperTypeOf(owner.eClass()) && !reference.isContainment()) {
// Look for containment superset. UML2 will do the right thing and add the new
// element implicitly to that superset
for (EReference next : UmlUtils.getSupersets(reference)) {
if (next.isContainment()) {
result = true;
break;
}
}
}
}
}
}
return result;
}
}
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