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/*****************************************************************************
* Copyright (c) 2013 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
*
* Contributors:
* Laurent Wouters laurent.wouters@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.common.helper;
import org.eclipse.emf.common.command.AbstractCommand;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.papyrus.commands.Activator;
import org.eclipse.papyrus.infra.core.resource.ModelSet;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.core.services.ServicesRegistry;
import org.eclipse.papyrus.infra.emf.utils.ServiceUtilsForEObject;
import org.eclipse.papyrus.infra.gmfdiag.common.AbstractPapyrusGmfCreateDiagramCommandHandler;
import org.eclipse.papyrus.infra.gmfdiag.common.utils.DiagramUtils;
import org.eclipse.papyrus.infra.viewpoints.configuration.PapyrusView;
import org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype;
/**
* Represents a prototype of GMF diagram for the viewpoints infrastructure
* @author Laurent Wouters
*/
public class DiagramPrototype extends ViewPrototype {
protected final String category;
protected final AbstractPapyrusGmfCreateDiagramCommandHandler command;
public DiagramPrototype(PapyrusView configuration, String category, AbstractPapyrusGmfCreateDiagramCommandHandler command) {
super(configuration);
this.category = category;
this.command = command;
}
@Override
public boolean instantiateOn(EObject owner) {
return instantiateOn(owner, null);
}
@Override
public boolean instantiateOn(EObject owner, String name) {
ServicesRegistry registry;
try {
registry = ServiceUtilsForEObject.getInstance().getServiceRegistry(owner);
} catch (ServiceException ex) {
Activator.log.error(ex);
return false;
}
ModelSet modelSet;
try {
modelSet = registry.getService(ModelSet.class);
} catch (ServiceException ex) {
Activator.log.error(ex);
return false;
}
Object result = command.createDiagram(modelSet, owner, owner, this, name);
return (result != null);
}
@Override
public boolean isOwnerReassignable() {
// Users can always move diagrams that are part of their viewpoint
return true;
}
@Override
public Command getCommandChangeOwner(EObject view, final EObject target) {
final Diagram diagram = (Diagram)view;
final EObject previous = DiagramUtils.getOwner(diagram);
return new AbstractCommand("Change diagram owner") {
@Override
public void execute() {
DiagramUtils.setOwner(diagram, target);
}
@Override
public void redo() {
DiagramUtils.setOwner(diagram, previous);
}
@Override
protected boolean prepare() { return true; }
};
}
@Override
public Command getCommandChangeRoot(EObject view, final EObject target) {
final Diagram diagram = (Diagram)view;
final EObject previous = diagram.getElement();
return new AbstractCommand("Change diagram root element") {
@Override
public void execute() {
diagram.setElement(target);
}
@Override
public void redo() {
diagram.setElement(previous);
}
@Override
protected boolean prepare() { return true; }
};
}
@Override
public EObject getOwnerOf(EObject view) {
return DiagramUtils.getOwner((Diagram)view);
}
@Override
public EObject getRootOf(EObject view) {
return ((Diagram)view).getElement();
}
}
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