| /******************************************************************************* |
| * 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.List; |
| |
| import org.eclipse.wst.sse.core.internal.PropagatingAdapter; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeAdapterFactory; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.DocumentType; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| |
| |
| public class PropagatingAdapterImpl implements PropagatingAdapter { |
| |
| private List adaptOnCreateFactories = null; |
| |
| /** |
| * AbstractPropagatingAdapterImpl constructor comment. |
| */ |
| public PropagatingAdapterImpl() { |
| super(); |
| } |
| |
| private void adaptOnCreate(IDOMNode node) { |
| // give each of the factories a chance to adapt the node, if it |
| // chooses to |
| if (adaptOnCreateFactories != null) { |
| |
| |
| synchronized (adaptOnCreateFactories) { |
| int length = adaptOnCreateFactories.size(); |
| for (int i = 0; i < length; i++) { |
| INodeAdapterFactory factory = (INodeAdapterFactory) adaptOnCreateFactories.get(i); |
| factory.adapt(node); |
| } |
| } |
| |
| } |
| |
| } |
| |
| /** |
| * This mechanism can be made "easier to use" later. |
| */ |
| public void addAdaptOnCreateFactory(INodeAdapterFactory factory) { |
| getAdaptOnCreateFactories().add(factory); |
| } |
| |
| /** |
| * Gets the adaptOnCreateFactories. |
| * |
| * @return Returns a List |
| */ |
| public List getAdaptOnCreateFactories() { |
| if (adaptOnCreateFactories == null) |
| adaptOnCreateFactories = new ArrayList(); |
| return adaptOnCreateFactories; |
| } |
| |
| |
| /** |
| * @see PropagatingAdapter#initializeForFactory(INodeAdapterFactory, |
| * INodeNotifier) |
| */ |
| public void initializeForFactory(INodeAdapterFactory factory, INodeNotifier node) { |
| // ISSUE: we are a DOM specific implimentation, |
| // we should not be. |
| if (node instanceof IDOMNode) { |
| IDOMNode xmlNode = (IDOMNode) node; |
| propagateTo(xmlNode); |
| } |
| } |
| |
| /** |
| * Allowing the INodeAdapter to compare itself against the type allows it |
| * to return true in more than one case. |
| */ |
| public boolean isAdapterForType(Object type) { |
| return type.equals(PropagatingAdapter.class); |
| } |
| |
| private boolean isInteresting(Object newValue) { |
| return (newValue != null && (newValue instanceof Element || newValue instanceof Document || newValue instanceof DocumentType)); |
| } |
| |
| /** |
| */ |
| public void notifyChanged(INodeNotifier notifier, int eventType, Object changedFeature, Object oldValue, Object newValue, int pos) { |
| // Issue: We only propagate to Elements ... |
| // not attributes too! We should careful consider doning all when |
| // when we improve "adapt on create" design. |
| if (eventType == INodeNotifier.ADD && isInteresting(newValue)) { |
| propagateTo((IDOMNode) newValue); |
| } |
| } |
| |
| private void propagateTo(IDOMNode node) { |
| // get adapter to ensure its created |
| node.getAdapterFor(PropagatingAdapter.class); |
| adaptOnCreate(node); |
| propagateToChildren(node); |
| } |
| |
| private void propagateToChildren(IDOMNode parent) { |
| for (Node child = parent.getFirstChild(); child != null; child = child.getNextSibling()) { |
| propagateTo((IDOMNode) child); |
| } |
| } |
| |
| /** |
| * @see PropagatingAdapter#release() |
| */ |
| public void release() { |
| if (adaptOnCreateFactories != null) { |
| |
| synchronized (adaptOnCreateFactories) { |
| int length = adaptOnCreateFactories.size(); |
| for (int i = 0; i < length; i++) { |
| INodeAdapterFactory factory = (INodeAdapterFactory) adaptOnCreateFactories.get(i); |
| factory.release(); |
| } |
| } |
| |
| } |
| } |
| |
| } |