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/*******************************************************************************
* Copyright (c) 2013 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.emf.compare.provider;
import java.util.List;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.common.util.BasicEList;
import org.eclipse.emf.compare.provider.spec.OverlayImageProvider;
import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
import org.eclipse.emf.edit.provider.ItemProviderDecorator;
/**
* And extended {@link ItemProviderDecorator} that provides an {@link OverlayImageProvider} and and
* {@link ExtendedAdapterFactoryItemDelegator}.
*
* @author <a href="mailto:mikael.barbero@obeo.fr">Mikael Barbero</a>
*/
public class ExtendedItemProviderDecorator extends ItemProviderDecorator implements Adapter.Internal {
/** The item delegator to reuse root adapter factory (if any). */
private final ExtendedAdapterFactoryItemDelegator itemDelegator;
/** The image provider used with this item provider. */
private final OverlayImageProvider overlayProvider;
/** The list of target notifier we are installed on. */
private final List<Notifier> targets;
/**
* An instance is created from an adapter factory. The factory is used as a key so that we always know
* which factory created this adapter.
*
* @param adapterFactory
* the adapter factory to use to adapt.
*/
public ExtendedItemProviderDecorator(ComposeableAdapterFactory adapterFactory) {
super(adapterFactory);
itemDelegator = new ExtendedAdapterFactoryItemDelegator(adapterFactory.getRootAdapterFactory());
overlayProvider = new OverlayImageProvider(EMFCompareEditPlugin.INSTANCE.getPluginResourceLocator());
targets = new BasicEList.FastCompare<Notifier>();
}
/**
* Returns the overlay provider.
*
* @return the overlayProvider
*/
protected OverlayImageProvider getOverlayProvider() {
return overlayProvider;
}
/**
* Returns the itemDelegator.
*
* @return the itemDelegator
*/
protected ExtendedAdapterFactoryItemDelegator getItemDelegator() {
return itemDelegator;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.common.notify.Adapter#getTarget()
*/
public Notifier getTarget() {
return null;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.common.notify.Adapter#setTarget(org.eclipse.emf.common.notify.Notifier)
*/
public void setTarget(Notifier newTarget) {
targets.add(newTarget);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.common.notify.Adapter.Internal#unsetTarget(org.eclipse.emf.common.notify.Notifier)
*/
public void unsetTarget(Notifier oldTarget) {
targets.remove(oldTarget);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.edit.provider.ItemProviderDecorator#dispose()
*/
@Override
public void dispose() {
for (Notifier otherTarget : targets) {
otherTarget.eAdapters().remove(this);
}
targets.clear();
super.dispose();
}
}
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