/*******************************************************************************
* Copyright (c) 2001, 2005 IBM Corporation 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:
* IBM Corporation - initial API and implementation
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.xml.core.internal.propagate;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.wst.sse.core.internal.PropagatingAdapter;
import org.eclipse.wst.sse.core.internal.PropagatingAdapterFactory;
import org.eclipse.wst.sse.core.internal.provisional.AbstractAdapterFactory;
import org.eclipse.wst.sse.core.internal.provisional.INodeAdapter;
import org.eclipse.wst.sse.core.internal.provisional.INodeAdapterFactory;
import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
/**
* The PropagatingAdapterFactory is part of the "adapt on create" mechanism. A
* PropagatingAdapter, once added to a node, will cause proagating adapters to
* be created for all child nodes. A side effect of creating a
* PropagatingAdapter for a node is that is is also creates adapters for and
* adapts the Node for all other registered 'create on adapt' Adapters. This
* other adapters are registered by registering their factories via plugin
* extension point.
*/
public class PropagatingAdapterFactoryImpl extends AbstractAdapterFactory implements PropagatingAdapterFactory {
private PropagatingAdapter fAdapterInstance;
private List fContributedFactories = null;
/**
* PropagatingAdapterFactory constructor comment.
*/
public PropagatingAdapterFactoryImpl() {
this(PropagatingAdapter.class, true);
}
protected PropagatingAdapterFactoryImpl(Object adapterKey, boolean registerAdapters) { // ,
super(adapterKey, registerAdapters);
}
public void addContributedFactories(INodeAdapterFactory factory) {
if (fContributedFactories != null) {
fContributedFactories.add(factory);
}
}
/**
* createAdapter method comment.
*/
protected INodeAdapter createAdapter(INodeNotifier target) {
// every notifier get's one of these
// (and the same instance of it)
return getAdapterInstance();
}
/**
* Gets the adapterInstance.
*
* @return Returns a PropagatingAdapter
*/
private PropagatingAdapter getAdapterInstance() {
if (fAdapterInstance == null) {
fAdapterInstance = new PropagatingAdapterImpl();
if (fContributedFactories != null) {
for (int i = 0; i < fContributedFactories.size(); i++)
fAdapterInstance.addAdaptOnCreateFactory((PropagatingAdapterFactory) fContributedFactories.get(i));
}
}
return fAdapterInstance;
}
public void release() {
// give the adapter instance a chance to release its factories
getAdapterInstance().release();
}
public void setContributedFactories(ArrayList list) {
fContributedFactories = list;
}
public INodeAdapterFactory copy() {
PropagatingAdapterFactory clonedInstance = new PropagatingAdapterFactoryImpl(getAdapterKey(), isShouldRegisterAdapter());
// clone this adapters specific list of adapter factories too
if (fContributedFactories != null) {
Iterator iterator = fContributedFactories.iterator();
clonedInstance.setContributedFactories(new ArrayList());
while (iterator.hasNext()) {
INodeAdapterFactory existingFactory = (INodeAdapterFactory) iterator.next();
clonedInstance.addContributedFactories(existingFactory.copy());
}
}
return clonedInstance;
}
}