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Wicket is a Java web application framework that takes simplicity, separation of concerns and ease of development to a whole new level. Wicket pages can be mocked up, previewed and later revised using standard WYSIWYG HTML design tools. Dynamic content processing and form handling is all handled in Java code using a first-class component model backed by POJO data beans that can easily be persisted using your favorite technology.

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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;

import org.apache.wicket.request.IRequestHandler;
import org.apache.wicket.request.IRequestMapper;
import org.apache.wicket.request.Request;
import org.apache.wicket.request.Url;
import org.apache.wicket.request.handler.resource.ResourceReferenceRequestHandler;
import org.apache.wicket.request.resource.ResourceReference;
import org.apache.wicket.request.resource.UrlResourceReference;
import org.apache.wicket.resource.bundles.ResourceBundleReference;

/**
 * A request mapper that is used to create Url out of UrlResourceReference.
 * UrlResourceReference works with {@link org.apache.wicket.request.resource.UrlResourceReference.CalculatedUrl} and
 * thus this mapper should not use {@link org.apache.wicket.SystemMapper.ParentFolderPlaceholderProvider}
 */
public class UrlResourceReferenceMapper implements IRequestMapper
{
	@Override
	public Url mapHandler(IRequestHandler requestHandler)
	{
		Url url = null;
		if (requestHandler instanceof ResourceReferenceRequestHandler)
		{
			ResourceReferenceRequestHandler resourceReferenceRequestHandler = (ResourceReferenceRequestHandler) requestHandler;
			ResourceReference resourceReference = resourceReferenceRequestHandler.getResourceReference();

			while (resourceReference instanceof ResourceBundleReference)
			{
				// unwrap the bundle to render the url for the actual reference
				resourceReference = ((ResourceBundleReference)resourceReference).getBundleReference();
			}

			if (resourceReference instanceof UrlResourceReference)
			{
				UrlResourceReference urlResourceReference = (UrlResourceReference) resourceReference;
				url = urlResourceReference.getUrl();
			}
		}
		return url;
	}

	@Override
	public IRequestHandler mapRequest(Request request)
	{
		return null;
	}

	@Override
	public int getCompatibilityScore(Request request)
	{
		return Integer.MIN_VALUE;
	}

}