/*
* Copyright (c) 2012-2016 Marsha Chechik, Alessio Di Sandro, Michalis Famelis,
* Rick Salay.
* 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:
* Alessio Di Sandro - Implementation.
*/
package edu.toronto.cs.se.mmint.mid.diagram.edit.policies;
import java.util.Iterator;
import org.eclipse.emf.ecore.EAnnotation;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientReferenceRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest;
import org.eclipse.gmf.runtime.notation.Edge;
import org.eclipse.gmf.runtime.notation.View;
import edu.toronto.cs.se.mmint.mid.diagram.edit.commands.OperatorDelCommand;
import edu.toronto.cs.se.mmint.mid.diagram.edit.parts.ExtendibleElementSupertypeEditPart;
import edu.toronto.cs.se.mmint.mid.diagram.edit.parts.ModelEndpoint2EditPart;
import edu.toronto.cs.se.mmint.mid.diagram.edit.parts.ModelEndpoint3EditPart;
import edu.toronto.cs.se.mmint.mid.diagram.part.MIDVisualIDRegistry;
public class OperatorSemanticEditPolicy extends OperatorItemSemanticEditPolicy {
protected Command getDestroyElementCommand(DestroyElementRequest req) {
View view = (View) getHost().getModel();
CompositeTransactionalCommand cmd = new CompositeTransactionalCommand(
getEditingDomain(), null);
cmd.setTransactionNestingEnabled(true);
for (Iterator<?> it = view.getTargetEdges().iterator(); it.hasNext();) {
Edge incomingLink = (Edge) it.next();
if (MIDVisualIDRegistry.getVisualID(incomingLink) == ExtendibleElementSupertypeEditPart.VISUAL_ID) {
cmd.add(new DeleteCommand(getEditingDomain(), incomingLink));
continue;
}
}
for (Iterator<?> it = view.getSourceEdges().iterator(); it.hasNext();) {
Edge outgoingLink = (Edge) it.next();
if (MIDVisualIDRegistry.getVisualID(outgoingLink) == ExtendibleElementSupertypeEditPart.VISUAL_ID) {
cmd.add(new DeleteCommand(getEditingDomain(), outgoingLink));
continue;
}
if (MIDVisualIDRegistry.getVisualID(outgoingLink) == ModelEndpoint2EditPart.VISUAL_ID) {
cmd.add(new DeleteCommand(getEditingDomain(), outgoingLink));
continue;
}
if (MIDVisualIDRegistry.getVisualID(outgoingLink) == ModelEndpoint3EditPart.VISUAL_ID) {
cmd.add(new DeleteCommand(getEditingDomain(), outgoingLink));
continue;
}
}
EAnnotation annotation = view.getEAnnotation("Shortcut"); //$NON-NLS-1$
if (annotation == null) {
// there are indirectly referenced children, need extra commands: false
addDestroyShortcutsCommand(cmd, view);
// delete host element
cmd.add(new OperatorDelCommand(req));
} else {
cmd.add(new DeleteCommand(getEditingDomain(), view));
}
return getGEFWrapper(cmd.reduce());
}
protected Command getStartCreateRelationshipCommand(CreateRelationshipRequest req) {
return null;
}
protected Command getCompleteCreateRelationshipCommand(CreateRelationshipRequest req) {
return null;
}
protected Command getReorientRelationshipCommand(ReorientRelationshipRequest req) {
return UnexecutableCommand.INSTANCE;
}
protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {
return UnexecutableCommand.INSTANCE;
}
}