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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:
* Régis CHEVREL: chevrel.regis <at> gmail.com
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.sysml.diagram.parametric.policies;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.sysml.constraints.ConstraintBlock;
import org.eclipse.papyrus.sysml.diagram.common.edit.policy.StructureCompartmentSemanticEditPolicy;
import org.eclipse.papyrus.sysml.service.types.element.SysMLElementTypes;
import org.eclipse.papyrus.uml.service.types.element.UMLElementTypes;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.Property;
import org.eclipse.uml2.uml.util.UMLUtil;
public class CustomStructureCompartmentSemanticEditPolicy extends
StructureCompartmentSemanticEditPolicy {
@Override
protected Command getCreateCommand(CreateElementRequest req) {
View dropTargetView = ((IGraphicalEditPart) getHost()).getNotationView();
EObject eContainer = dropTargetView.eContainer();
Element parent = null;
if (eContainer != null && eContainer instanceof View) {
parent = (Element) ((View) eContainer).getElement();
}
if (parent instanceof Property) {
parent = ((Property) parent).getType();
}
if (parent != null) {
if (UMLUtil.getStereotypeApplication(parent, ConstraintBlock.class) != null) {
IElementType elementType = req.getElementType();
if (elementType != UMLElementTypes.CONSTRAINT
&& elementType != UMLElementTypes.COMMENT) {
// ConstraintBlock
if (elementType != SysMLElementTypes.CONSTRAINT_PROPERTY) {
// only ConstraintProperty can be dropped in structure
// compartment of a diagram owned by a ConstraintBlock
// (except common Comment and Constraint)
return UnexecutableCommand.INSTANCE;
}
}
}
}
return super.getCreateCommand(req);
}
}
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