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/*******************************************************************************
* Copyright (c) 2016 EclipseSource Muenchen GmbH 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:
* Stefan Dirix - initial API and implementation
*******************************************************************************/
package org.eclipse.emf.compare.diagram.ide.ui.papyrus.contentmergeviewer.facet;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.edit.provider.Disposable;
import org.eclipse.emf.edit.provider.IStructuredItemContentProvider;
import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
import org.eclipse.uml2.uml.edit.providers.UMLItemProviderAdapterFactory;
/**
* Couples the Papyrus Facet mechanism with the AdapterFactory approach of EMFCompare.
*
* @author Stefan Dirix <sdirix@eclipsesource.com>
*/
public class PapyrusFacetContentProviderWrapperAdapterFactory extends UMLItemProviderAdapterFactory {
/**
* Collects and disposes associated adapters.
*/
private Disposable disposable = new Disposable();
/**
* Constructor.
*/
public PapyrusFacetContentProviderWrapperAdapterFactory() {
super();
// Only support content types
supportedTypes.clear();
supportedTypes.add(ITreeItemContentProvider.class);
supportedTypes.add(IStructuredItemContentProvider.class);
}
@Override
public Adapter createAdapter(Notifier target) {
ResourceSet resourceSet = getResourceSet(target);
if (resourceSet != null) {
return new PapyrusFacetContentProviderWrapper(this, resourceSet);
}
return super.createAdapter(target);
}
/**
* Determines the {@link ResourceSet} of the given {@code target}.
*
* @param target
* The {@Notifier} for which a {@link ResourceSet} is to be determined.
* @return The {@link ResourceSet} for the given {@code target} if there is one, {@code null} otherwise.
*/
private ResourceSet getResourceSet(Notifier target) {
if (EObject.class.isInstance(target)) {
EObject object = EObject.class.cast(target);
return object.eResource().getResourceSet();
}
return null;
}
/**
* {@inheritDoc}
*
* @see NotationItemProviderAdapterFactory#dispose()
*/
@Override
public void dispose() {
disposable.dispose();
super.dispose();
}
/**
* {@inheritDoc}
*
* @see NotationItemProviderAdapterFactory#associate(Adapter adapter, Notifier target)
*/
@Override
protected void associate(Adapter adapter, Notifier target) {
super.associate(adapter, target);
if (adapter != null) {
disposable.add(adapter);
}
}
}
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