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/***************************************************************************
* Copyright (c) 2007 Conselleria de Infraestructuras y Transporte,
* Generalitat de la Comunitat Valenciana . 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: Gabriel Merin Cubero (Prodevelop) – Sequence Diagram implementation
*
******************************************************************************/
package org.eclipse.papyrus.diagram.sequence.edit.policies;
import java.util.Iterator;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.CompoundCommand;
import org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.eclipse.uml2.uml.Event;
import org.eclipse.uml2.uml.GeneralOrdering;
import org.eclipse.uml2.uml.Message;
import org.eclipse.uml2.uml.MessageOccurrenceSpecification;
import org.eclipse.papyrus.diagram.sequence.edit.commands.MessageOrderCommand;
public class MessageDestroySemanticEditPolicy extends UMLBaseItemSemanticEditPolicy {
@Override
protected Command getDestroyElementCommand(DestroyElementRequest req) {
/*
* Destroy all the elements that are created when a message is created the first time:
* 1.- The Send Event
* 2.- The Receive Event
* 3.- The 2 Message Occurrence Specifications
* 4.- The message
*
* To accomplish this, will build a compound command
*/
CompoundCommand compoundCmd = new CompoundCommand();
if (req.getElementToDestroy() instanceof Message) {
Message msg = (Message) req.getElementToDestroy();
// Obtain the elements to destroy
MessageOccurrenceSpecification msgSend = null;
MessageOccurrenceSpecification msgRecieve = null;
Event sendEvent = null;
Event receiveEvent = null;
if (msg.getSendEvent() instanceof MessageOccurrenceSpecification)
msgSend = (MessageOccurrenceSpecification) msg.getSendEvent();
if (msg.getReceiveEvent() instanceof MessageOccurrenceSpecification)
msgRecieve = (MessageOccurrenceSpecification) msg
.getReceiveEvent();
if (msgSend != null)
sendEvent = msgSend.getEvent();
if (msgRecieve != null)
receiveEvent = msgRecieve.getEvent();
// Update ordering
compoundCmd.add(new MessageOrderCommand(req));
// Create and compound the Destroy Element Commands
if (sendEvent != null) {
DestroyElementRequest reqSendEvent = new DestroyElementRequest(req
.getEditingDomain(), sendEvent, false);
compoundCmd
.add(getGEFWrapper(new DestroyElementCommand(reqSendEvent)));
}
if (receiveEvent != null) {
DestroyElementRequest reqReceiveEvent = new DestroyElementRequest(req
.getEditingDomain(), receiveEvent, false);
compoundCmd
.add(getGEFWrapper(new DestroyElementCommand(reqReceiveEvent)));
}
if (msgSend != null) {
// Destroy first its general ordering
for (Iterator<GeneralOrdering> i = msgSend.getGeneralOrderings().iterator(); i.hasNext();) {
DestroyElementRequest reqGenOrd = new DestroyElementRequest(req.getEditingDomain(), i.next(), false);
compoundCmd.add(getGEFWrapper(new DestroyElementCommand(
reqGenOrd)));
}
// Destroy the MessageOccurrenceSpecification
DestroyElementRequest reqMsgSend = new DestroyElementRequest(
req.getEditingDomain(), msgSend, false);
compoundCmd.add(getGEFWrapper(new DestroyElementCommand(
reqMsgSend)));
}
if (msgRecieve != null) {
// Destroy first its general ordering
for (Iterator<GeneralOrdering> i = msgRecieve.getGeneralOrderings().iterator(); i.hasNext();) {
DestroyElementRequest reqGenOrd = new DestroyElementRequest(req.getEditingDomain(), i.next(), false);
compoundCmd.add(getGEFWrapper(new DestroyElementCommand(
reqGenOrd)));
}
// Destroy the MessageOccurrenceSpecification
DestroyElementRequest reqMsgReceive = new DestroyElementRequest(
req.getEditingDomain(), msgRecieve, false);
compoundCmd.add(getGEFWrapper(new DestroyElementCommand(
reqMsgReceive)));
}
}
compoundCmd.add(getGEFWrapper(new DestroyElementCommand(req)));
return compoundCmd;
}
}
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