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/*****************************************************************************
* Copyright (c) 2013 CEA
*
*
* 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:
* Soyatec - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.sequence.edit.policies;
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.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.ConnectionEditPart;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.requests.ReconnectRequest;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand;
import org.eclipse.papyrus.uml.diagram.sequence.edit.parts.AbstractExecutionSpecificationEditPart;
import org.eclipse.papyrus.uml.diagram.sequence.edit.parts.AbstractMessageEditPart;
import org.eclipse.papyrus.uml.diagram.sequence.util.OccurrenceSpecificationHelper;
import org.eclipse.uml2.uml.ExecutionSpecification;
import org.eclipse.uml2.uml.Message;
import org.eclipse.uml2.uml.MessageEnd;
import org.eclipse.uml2.uml.OccurrenceSpecification;
import org.eclipse.uml2.uml.UMLFactory;
/**
* This class fixed the bug when reconnecting message from the end of an execution to the execution, at this moment, the model of the source and
* target are not changed, but the UML2 model must be changed from message end to execution occurrence specification.
*
* @author Jin Liu (jin.liu@soyatec.com)
*/
public class ExecutionGraphicalNodeEditPolicy extends ElementCreationWithMessageEditPolicy {
@Override
protected Command getReconnectSourceCommand(ReconnectRequest request) {
Command command = super.getReconnectSourceCommand(request);
if(command != null && command.canExecute() && !relationshipSourceHasChanged(request)) {
command = appendUpdateExecutionEndCommand(request, command, false);
}
return command;
}
@Override
protected Command getReconnectTargetCommand(ReconnectRequest request) {
Command command = super.getReconnectTargetCommand(request);
if(command != null && command.canExecute() && !relationshipTargetHasChanged(request)) {
command = appendUpdateExecutionEndCommand(request, command, true);
}
return command;
}
/**
* @param request
* @param command
* @return
*/
private Command appendUpdateExecutionEndCommand(ReconnectRequest request, Command command, boolean messageTarget) {
EditPart target = request.getTarget();
ExecutionSpecification execution = null;
if(target instanceof AbstractExecutionSpecificationEditPart) {
EObject elt = ((AbstractExecutionSpecificationEditPart)target).resolveSemanticElement();
if(elt instanceof ExecutionSpecification) {
execution = (ExecutionSpecification)elt;
}
}
MessageEnd messageEnd = null;
ConnectionEditPart conn = request.getConnectionEditPart();
if(conn instanceof AbstractMessageEditPart) {
EObject elt = ((AbstractMessageEditPart)conn).resolveSemanticElement();
if(elt instanceof Message) {
messageEnd = messageTarget ? ((Message)elt).getReceiveEvent() : ((Message)elt).getSendEvent();
}
}
if(execution != null && messageEnd != null) {
OccurrenceSpecification start = execution.getStart();
OccurrenceSpecification finish = execution.getFinish();
if(start != null && start == messageEnd) {
command = command.chain(new ICommandProxy(new ResetExecutionEndCommand(((IGraphicalEditPart)target).getEditingDomain(), execution, true)));
} else if(finish != null && finish == messageEnd) {
command = command.chain(new ICommandProxy(new ResetExecutionEndCommand(((IGraphicalEditPart)target).getEditingDomain(), execution, false)));
}
}
return command;
}
private boolean relationshipSourceHasChanged(ReconnectRequest request) {
return !request.getConnectionEditPart().getSource().equals(request.getTarget());
}
private boolean relationshipTargetHasChanged(ReconnectRequest request) {
return !request.getConnectionEditPart().getTarget().equals(request.getTarget());
}
private static class ResetExecutionEndCommand extends AbstractTransactionalCommand {
private ExecutionSpecification execution;
private boolean resetStart;
/**
* Constructor.
*
* @param domain
* @param label
* @param affectedFiles
*/
public ResetExecutionEndCommand(TransactionalEditingDomain domain, ExecutionSpecification execution, boolean resetStart) {
super(domain, "", null);
this.execution = execution;
this.resetStart = resetStart;
}
/**
* @see org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand#doExecuteWithResult(org.eclipse.core.runtime.IProgressMonitor,
* org.eclipse.core.runtime.IAdaptable)
*
* @param monitor
* @param info
* @return
* @throws ExecutionException
*/
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
if(execution != null) {
if(resetStart) {
OccurrenceSpecificationHelper.resetExecutionStart(execution, UMLFactory.eINSTANCE.createExecutionOccurrenceSpecification());
} else {
OccurrenceSpecificationHelper.resetExecutionFinish(execution, UMLFactory.eINSTANCE.createExecutionOccurrenceSpecification());
}
}
return CommandResult.newOKCommandResult();
}
}
}
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