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/*******************************************************************************
* Copyright (c) 2012 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
*******************************************************************************/
package org.eclipse.papyrus.uml.diagram.timing.custom.edit.commands;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.emf.type.core.commands.EditElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.papyrus.uml.diagram.timing.custom.utils.EcoreUtils;
import org.eclipse.papyrus.uml.diagram.timing.custom.utils.MessageUtils;
import org.eclipse.papyrus.uml.diagram.timing.custom.utils.OccurrenceSpecificationUtils;
import org.eclipse.uml2.uml.DestructionOccurrenceSpecification;
import org.eclipse.uml2.uml.Gate;
import org.eclipse.uml2.uml.Interaction;
import org.eclipse.uml2.uml.Lifeline;
import org.eclipse.uml2.uml.Message;
import org.eclipse.uml2.uml.MessageEnd;
import org.eclipse.uml2.uml.MessageKind;
import org.eclipse.uml2.uml.MessageSort;
import org.eclipse.uml2.uml.OccurrenceSpecification;
import org.eclipse.uml2.uml.UMLFactory;
/**
* Creates a Message between MessageOccurrenceSpecifications. Converts OccurrenceSpecifications to
* MessageOccurrenceSpecifications if needed
*/
public class CustomMessageCreateCommand extends EditElementCommand {
private final Interaction interaction;
private final EObject source;
private final EObject target;
private final MessageKind messageKind;
private final MessageSort messageSort;
public CustomMessageCreateCommand(final CreateRelationshipRequest request) {
super(request.getLabel(), null, request);
this.source = request.getSource();
this.target = request.getTarget();
this.messageKind = MessageUtils.getMessageKind(request.getElementType());
this.messageSort = MessageUtils.getMessageSort(request.getElementType());
this.interaction = EcoreUtils.getContaining(this.source, Interaction.class);
}
@Override
public boolean canExecute() {
if(this.source == null && this.target == null) {
return false;
}
// no create or destroy Message to a Gate
if(this.target instanceof Gate && (this.messageSort == MessageSort.CREATE_MESSAGE_LITERAL || this.messageSort == MessageSort.DELETE_MESSAGE_LITERAL)) {
return false;
}
// no create message can target a destruction
if(this.messageSort == MessageSort.CREATE_MESSAGE_LITERAL && this.target instanceof DestructionOccurrenceSpecification) {
return false;
}
if(this.messageKind == MessageKind.FOUND_LITERAL) {
if(this.source != null && !(this.source instanceof Lifeline)) {
return false;
}
} else if(this.source != null && !(MessageUtils.isPotentialMessageEnd(this.source))) {
return false;
}
if(this.messageKind == MessageKind.LOST_LITERAL) {
if(this.target != null && !(this.target instanceof Lifeline)) {
return false;
}
} else if(this.target != null && !(MessageUtils.isPotentialMessageEnd(this.target))) {
return false;
}
if(this.source == null) {
return true; // link creation is in progress; source is not defined yet
}
if(this.interaction == null) {
return false;
}
return true;
}
@Override
protected CommandResult doExecuteWithResult(final IProgressMonitor monitor, final IAdaptable info) throws ExecutionException {
if(!canExecute()) {
throw new ExecutionException("Invalid arguments in create link command"); //$NON-NLS-1$
}
final boolean destruction = this.messageSort == MessageSort.DELETE_MESSAGE_LITERAL;
final boolean creation = this.messageSort == MessageSort.CREATE_MESSAGE_LITERAL;
if(destruction) {
OccurrenceSpecificationUtils.deleteEverythingAfter((OccurrenceSpecification)this.target, null);
}
if(creation) {
OccurrenceSpecificationUtils.deleteEverythingBefore((OccurrenceSpecification)this.target, null);
}
// a "found" message comes from nowhere
final MessageEnd messageSource = this.messageKind == MessageKind.FOUND_LITERAL ? null : MessageUtils.convertToMessageOccurrenceSpecification(this.source, false);
// a "lost" message goes to nowhere
final MessageEnd messageTarget = this.messageKind == MessageKind.LOST_LITERAL ? null : MessageUtils.convertToMessageOccurrenceSpecification(this.target, destruction);
if(!MessageUtils.isValidMessage(this.messageSort, this.messageKind, messageSource, messageTarget)) {
throw new ExecutionException("Invalid Message"); //$NON-NLS-1$
}
final Message newMessage = UMLFactory.eINSTANCE.createMessage();
this.interaction.getMessages().add(newMessage);
newMessage.setSendEvent(messageSource);
newMessage.setReceiveEvent(messageTarget);
newMessage.setMessageSort(this.messageSort);
newMessage.setName(""); //$NON-NLS-1$
((CreateElementRequest)getRequest()).setNewElement(newMessage);
return CommandResult.newOKCommandResult(newMessage);
}
}
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