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Pax Wicket Service is an OSGi extension of the Wicket framework, allowing for dynamic loading and unloading of Wicket components and pageSources.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.wicket.markup.resolver;

import org.apache.wicket.Component;
import org.apache.wicket.MarkupContainer;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.MarkupStream;
import org.apache.wicket.markup.WicketTag;
import org.apache.wicket.markup.html.WebMarkupContainer;

/**
 * This is a tag resolver which handles <wicket:link> tags. Because autolinks are already
 * detected and handled, the only task of this resolver will be to add a "transparent"
 * WebMarkupContainer to transparently handling child components.
 * 
 * @author Juergen Donnerstag
 */
public class WicketLinkResolver implements IComponentResolver
{
	private static final long serialVersionUID = 1L;

	/**
	 * Try to resolve the tag, then create a component, add it to the container and render it.
	 * 
	 * @see org.apache.wicket.markup.resolver.IComponentResolver#resolve(MarkupContainer,
	 *      MarkupStream, ComponentTag)
	 * 
	 * @param container
	 *            The container parsing its markup
	 * @param markupStream
	 *            The current markupStream
	 * @param tag
	 *            The current component tag while parsing the markup
	 * @return true, if componentId was handle by the resolver. False, otherwise
	 */
	public boolean resolve(final MarkupContainer container, final MarkupStream markupStream,
		final ComponentTag tag)
	{
		if (tag instanceof WicketTag)
		{
			WicketTag wtag = (WicketTag)tag;
			if (wtag.isLinkTag() && (wtag.getNamespace() != null))
			{
				final String id = tag.getId() + container.getPage().getAutoIndex();
				final Component component = new WebMarkupContainer(id)
				{
					private static final long serialVersionUID = 1L;

					/**
					 * @see org.apache.wicket.MarkupContainer#isTransparentResolver()
					 */
					@Override
					public boolean isTransparentResolver()
					{
						return true;
					}
				};

				container.autoAdd(component, markupStream);

				// Yes, we handled the tag
				return true;
			}
		}

		// We were not able to handle the tag
		return false;
	}
}