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package org.eclipse.papyrus.diagram.sequence.edit.policies;
import java.util.Iterator;
import org.eclipse.emf.common.util.EList;
import org.eclipse.gef.Request;
import org.eclipse.gef.RequestConstants;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.CompoundCommand;
import org.eclipse.gef.requests.GroupRequest;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.emf.type.core.commands.DestroyReferenceCommand;
import org.eclipse.gmf.runtime.emf.type.core.commands.SetValueCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyReferenceRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.uml2.uml.Comment;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.Model;
import org.eclipse.uml2.uml.UMLPackage;
import org.eclipse.papyrus.diagram.sequence.edit.parts.CommentAnnotatedElementEditPart;
/**
* @generated
*/
public class CommentAnnotatedElementItemSemanticEditPolicy extends
UMLBaseItemSemanticEditPolicy {
/**
* @generated NOT
*/
@Override
public Command getCommand(Request request) {
if (request instanceof GroupRequest
&& RequestConstants.REQ_DELETE.equals(request.getType())) {
CommentAnnotatedElementEditPart ep = (CommentAnnotatedElementEditPart) getHost();
DestroyReferenceRequest drr = new DestroyReferenceRequest(
((View) ep.getSource().getModel()).getElement(),
UMLPackage.eINSTANCE.getComment_AnnotatedElement(),
((View) ep.getTarget().getModel()).getElement(), false);
return getDestroyReferenceCommand(drr);
}
return super.getCommand(request);
}
/**
* @generated NOT
*/
@Override
protected Command getDestroyReferenceCommand(DestroyReferenceRequest req) {
CompoundCommand cc = new CompoundCommand();
Comment c = (Comment) req.getContainer();
cc.add(getGEFWrapper(new DestroyReferenceCommand(req)));
if (c.getAnnotatedElements().size() < 2
|| c.getAnnotatedElements().size() > 2) {
Model m = (Model) c.eResource().getContents().get(0);
SetRequest sr = new SetRequest(m, UMLPackage.eINSTANCE
.getElement_OwnedComment(), c);
cc.add(new ICommandProxy(new SetValueCommand(sr)));
} else {
Element e = findNewParent((Element) req.getReferencedObject(), c
.getAnnotatedElements());
SetRequest sr = new SetRequest(e, UMLPackage.eINSTANCE
.getElement_OwnedComment(), c);
cc.add(new ICommandProxy(new SetValueCommand(sr)));
}
return cc;
}
/**
* @not generated
*/
private Element findNewParent(Element oldValue, EList<Element> elements) {
for (Iterator<Element> it = elements.iterator(); it.hasNext();) {
Element e = it.next();
if (e != oldValue)
return e;
}
return null;
}
}
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