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/*****************************************************************************
* Copyright (c) 2018 CEA LIST and others.
*
* 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:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.component.custom.edit.policies;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.CreationEditPolicy;
import org.eclipse.papyrus.infra.gmfdiag.common.editpolicies.DefaultCreationEditPolicy;
import org.eclipse.uml2.uml.Component;
/**
* This policy used to reparent in case when semantically child {@link Component} contained in parnet {@link Component}
* but graphically child {@link Component} contained in another place.
*
* https://bugs.eclipse.org/bugs/show_bug.cgi?id=479981
*/
public class CompositeCompartmentCreationEditPolicy extends DefaultCreationEditPolicy {
/**
* Reparent only view if child is {@link Component}
* if other case
*
* @see org.eclipse.papyrus.infra.gmfdiag.common.editpolicies.DefaultCreationEditPolicy#getReparentCommand(org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart)
*/
@Override
protected ICommand getReparentCommand(IGraphicalEditPart gep) {
if (gep.resolveSemanticElement() instanceof Component) {
return getReparentViewCommand(gep);
}
return super.getReparentCommand(gep);
}
/**
* In case when element is {@link Component} don't check is newContext already contain element
*
* @see org.eclipse.gmf.runtime.diagram.ui.editpolicies.CreationEditPolicy#shouldReparent(org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.EObject)
*/
@Override
protected boolean shouldReparent(EObject element, EObject newContext) {
if (element instanceof Component) {
return !(element == null || element == newContext || isContainedIn(element, newContext));
}
return super.shouldReparent(element, newContext);
}
/**
* pivate method isContainedIn({@link EObject} element, {@link EObject} newContext) from {@link CreationEditPolicy}
*/
private boolean isContainedIn(EObject element, EObject newContext) {
EObject container = newContext.eContainer();
while (container != null) {
if (container.equals(element)) {
return true;
}
container = container.eContainer();
}
return false;
}
}
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