001/*
002 *  Copyright 2010 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.web.cocoon;
017
018import java.util.Collections;
019import java.util.Map;
020
021import org.apache.avalon.framework.parameters.Parameters;
022import org.apache.avalon.framework.thread.ThreadSafe;
023import org.apache.cocoon.acting.AbstractAction;
024import org.apache.cocoon.acting.Action;
025import org.apache.cocoon.environment.ObjectModelHelper;
026import org.apache.cocoon.environment.Redirector;
027import org.apache.cocoon.environment.Request;
028import org.apache.cocoon.environment.SourceResolver;
029
030import org.ametys.web.WebConstants;
031
032/**
033 * {@link Action} for selecting the URL prefix to use in preview mode.
034 */
035public class SetPathPrefixAction extends AbstractAction implements ThreadSafe
036{
037    @Override
038    public Map act(Redirector redirector, SourceResolver resolver, Map objectModel, String source, Parameters parameters) throws Exception
039    {
040        Request request = ObjectModelHelper.getRequest(objectModel);
041        String prefix = parameters.getParameter("prefix");
042        
043        if (prefix != null)
044        {
045            request.setAttribute(WebConstants.PATH_PREFIX, prefix);
046            
047            return Collections.EMPTY_MAP;
048        }
049        
050        return null;
051    }
052}