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/*****************************************************************************
* Copyright (c) 2009 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:
* Fadoi LAKHAL Fadoi.Lakhal@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.diagram.clazz.custom.policies.itemsemantic;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.ConnectionEditPart;
import org.eclipse.gef.commands.Command;
import org.eclipse.gmf.runtime.common.core.command.CompositeCommand;
import org.eclipse.gmf.runtime.common.core.util.StringStatics;
import org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyReferenceRequest;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.diagram.clazz.custom.command.CustomOwnerClassChangeCommand;
import org.eclipse.papyrus.diagram.clazz.edit.parts.ContainmentCircleEditPart;
import org.eclipse.papyrus.diagram.clazz.edit.policies.UMLBaseItemSemanticEditPolicy;
import org.eclipse.papyrus.diagram.clazz.providers.UMLElementTypes;
import org.eclipse.uml2.uml.PackageableElement;
public class CustomContainmentSubLinkItemSemanticEditPolicy extends UMLBaseItemSemanticEditPolicy {
public CustomContainmentSubLinkItemSemanticEditPolicy() {
super(UMLElementTypes.Link_4022);
// TODO Auto-generated constructor stub
}
/**
* / * {@inheritDoc}
*/
protected Command getDestroyReferenceCommand(DestroyReferenceRequest req) {
CompositeCommand cc = new CompositeCommand(StringStatics.BLANK);
TransactionalEditingDomain editingDomain = getEditingDomain();
if(editingDomain == null) {
return null;
}
// Change the owner of the target class
cc.compose(new CustomOwnerClassChangeCommand(editingDomain, (PackageableElement)req.getReferencedObject()));
ContainmentCircleEditPart containmentCEP = (ContainmentCircleEditPart)((ConnectionEditPart)getHost()).getSource();
//The containment circle node is deleted only if any other link is connected
if(containmentCEP.getSourceConnections().size() == 1) {
cc.compose(new DeleteCommand(editingDomain, (View)containmentCEP.getModel()));
}
return new ICommandProxy(cc.reduce());
}
}
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