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/*****************************************************************************
* Copyright (c) 2010 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:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.customization.properties.providers;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.papyrus.infra.widgets.providers.AbstractFilteredContentProvider;
import org.eclipse.papyrus.infra.widgets.providers.IStaticContentProvider;
import org.eclipse.papyrus.views.properties.contexts.Context;
import org.eclipse.papyrus.views.properties.util.Util;
/**
* An abstract implementation of {@link IStaticContentProvider} for
* content providers which rely on the available {@link Context}s
* to retrieve their elements.
*
* @author Camille Letavernier
*
*/
public abstract class AbstractContextualContentProvider extends AbstractFilteredContentProvider implements IStaticContentProvider {
/**
* The list of available contexts in the current model
*/
protected Collection<Context> contexts;
/**
* The EObject used to retrieve the available contexts
*/
protected EObject source;
/**
*
* Constructor.
*
* @param source
* The EObject used to retrieve the available contexts
*/
protected AbstractContextualContentProvider(EObject source) {
contexts = findContexts(source);
this.source = source;
showIfHasVisibleParent = true;
}
private List<Context> findContexts(EObject source) {
List<Context> contexts = new LinkedList<Context>();
Context rootContext = null;
if(source.eResource() != null) {
for(Resource resource : source.eResource().getResourceSet().getResources()) {
if(!resource.getContents().isEmpty() && resource.getContents().get(0) instanceof Context) {
rootContext = (Context)resource.getContents().get(0);
contexts.add(rootContext);
break;
}
}
}
return Util.getDependencies(rootContext);
}
}
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