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/***********************************************************************
* Copyright (c) 2008, 2009 Anyware Technologies, Obeo
*
* 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:
* Jacques Lescot (Anyware Technologies) - initial API and implementation
* Obeo
*
**********************************************************************/
package org.eclipse.papyrus.outline;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider;
import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
/**
* Provide the content of the given diagram.
*
* @author <a href="mailto:david.sciamma@anyware-tech.com">David Sciamma</a>
* @author <a href="mailto:jacques.lescot@anyware-tech.com">Jacques Lescot</a>
* @author <a href="mailto:jerome.benois@obeo.fr">Jerome Benois</a>
*/
public class DiagramOrientedContentProvider implements ITreeContentProvider {
private AdapterFactoryContentProvider myAdapterFactoryContentProvider;
private static final Object[] EMPTY_ARRAY = new Object[0];
private Diagram diagram;
public DiagramOrientedContentProvider(AdapterFactoryContentProvider adapterContentProvider) {
this.myAdapterFactoryContentProvider = adapterContentProvider;
}
/**
* {@inheritDoc}
*/
public void dispose() {
// Dispose objects
myAdapterFactoryContentProvider.dispose();
}
/**
* {@inheritDoc}
*/
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
myAdapterFactoryContentProvider.inputChanged(viewer, oldInput, newInput);
}
/**
* {@inheritDoc}
*/
public Object[] getElements(Object inputElement) {
if(inputElement instanceof Diagram) {
this.diagram = (Diagram)inputElement;
List<Object> children = new ArrayList<Object>();
for(Object object : diagram.getChildren()) {
if(object instanceof View) {
View view = (View)object;
EObject modelElement = ViewUtil.resolveSemanticElement(view);
if (modelElement != null)
{
children.add(modelElement);
}
}
}
return children.toArray();
}
return EMPTY_ARRAY;
}
/**
* {@inheritDoc}
*/
public Object[] getChildren(Object parentElement) {
return EMPTY_ARRAY;
}
/**
* {@inheritDoc}
*/
public Object getParent(Object element) {
// The parent of a diagram is the model object that contains it.
if(element instanceof Diagram) {
return ((Diagram)element).getElement();
}
return null;
}
/**
* {@inheritDoc}
*/
public boolean hasChildren(Object element) {
return getChildren(element).length > 0;
}
}
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