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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:
* Ansgar Radermacher ansgar.radermacher@cea.fr
*
*****************************************************************************/
package org.eclipse.papyrus.qompass.designer.core.templates;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.papyrus.FCM.BindingHelper;
import org.eclipse.papyrus.FCM.Template;
import org.eclipse.papyrus.qompass.designer.core.extensions.BindingHelperExt;
import org.eclipse.papyrus.qompass.designer.core.listeners.CopyListener;
import org.eclipse.papyrus.qompass.designer.core.transformations.Copy;
import org.eclipse.uml2.uml.BehavioralFeature;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.OpaqueBehavior;
import org.eclipse.uml2.uml.TemplateBinding;
import org.eclipse.uml2.uml.util.UMLUtil;
/**
* Template instantiation is implemented by means of an CopyListener that
* evaluates the template stereotype.
* This is a pre-copy listener.
*/
public class TemplateInstantiationListener implements CopyListener {
public static TemplateInstantiationListener getInstance() {
if(templateInstantiationListener == null) {
templateInstantiationListener = new TemplateInstantiationListener();
templateInstantiationListener.treatTemplate = false;
}
return templateInstantiationListener;
}
public void init(Copy copy, TemplateBinding binding, Object[] args) {
this.binding = binding;
}
private TemplateBinding binding;
private boolean treatTemplate;
private static TemplateInstantiationListener templateInstantiationListener;
public EObject copyEObject(Copy copy, EObject sourceEObj) {
if(treatTemplate) {
return sourceEObj;
}
treatTemplate = true;
EObject targetEObj = checkEObject(copy, sourceEObj);
treatTemplate = false;
return targetEObj;
}
protected EObject checkEObject(Copy copy, EObject sourceEObj) {
// Specific treatment of OpaqueBehaviors: Template instantiations are typically managed
// by the associated operation which instantiates operation and behavior. In this case, the
// behavior should not be instantiated.
if(sourceEObj instanceof OpaqueBehavior) {
OpaqueBehavior behavior = (OpaqueBehavior)sourceEObj;
BehavioralFeature bf = behavior.getSpecification();
if(bf != null) {
Template template = UMLUtil.getStereotypeApplication(bf, Template.class);
if(template != null) {
return null;
}
}
}
if(sourceEObj instanceof Element) {
Template template = UMLUtil.getStereotypeApplication((Element)sourceEObj, Template.class);
if((template != null)) {
BindingHelper helper = template.getHelper();
if (helper != null) {
return BindingHelperExt.applyHelper(helper, copy, binding, sourceEObj);
}
}
}
return sourceEObj;
}
}
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