/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.cocoon.components.modules.input;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Request;
import org.apache.cocoon.environment.portlet.PortletEnvironment;
import org.apache.cocoon.environment.portlet.PortletObjectModelHelper;
import org.apache.cocoon.util.NetUtils;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.thread.ThreadSafe;
import javax.portlet.PortletURL;
import javax.portlet.RenderResponse;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
/**
* Input module to be used in together with
* {@link org.apache.cocoon.transformation.LinkRewriterTransformer}
* in JSR-168 (Portlet) environment. Allows creation of render, action, and
* resource URLs using syntax:
* <ul>
* <li><code>portlet:action:<path></code> for action URL;
* <li><code>portlet:render:<path></code> for render URL;
* <li><code>portlet:resource:<path></code> for resource URL;
* </ul>
*
* Outside of portlet environment, prefixes (<code>portlet:action:</code>,
* <code>portlet:render:</code>, <code>portlet:resource:</code>) are omitted.
*
* @author <a href="mailto:vgritsenko@apache.org">Vadim Gritsenko</a>
* @version CVS $Id: PortletURLModule.java,v 1.2 2004/03/05 13:02:07 bdelacretaz Exp $
*/
public class PortletURLModule extends AbstractInputModule implements ThreadSafe {
public static final String NAME_RENDER = "render";
public static final String NAME_RESOURCE = "resource";
public static final String NAME_ACTION = "action";
private static final String PREFIX_RENDER = NAME_RENDER + ":";
private static final String PREFIX_RESOURCE = NAME_RESOURCE + ":";
private static final String PREFIX_ACTION = NAME_ACTION + ":";
private static final List returnNames;
static {
List tmp = new ArrayList();
tmp.add(NAME_RENDER);
tmp.add(NAME_RESOURCE);
tmp.add(NAME_ACTION);
returnNames = tmp;
}
public Iterator getAttributeNames(Configuration modeConf, Map objectModel) throws ConfigurationException {
return PortletURLModule.returnNames.iterator();
}
public Object getAttribute(String name, Configuration modeConf, Map objectModel) throws ConfigurationException {
if (name == null) {
throw new NullPointerException("Attribute name is null");
}
Request request = ObjectModelHelper.getRequest(objectModel);
RenderResponse renderResponse = PortletObjectModelHelper.getRenderResponse(objectModel);
if (renderResponse != null) {
PortletURL url = null;
if (name.startsWith(PREFIX_RENDER)) {
url = renderResponse.createRenderURL();
name = name.substring(PREFIX_RENDER.length());
if (name.length() > 0 && name.charAt(0) == '/') {
name = name.substring(1);
}
} else if (name.startsWith(PREFIX_RESOURCE)) {
name = name.substring(PREFIX_RESOURCE.length());
if (name.length() == 0 || name.charAt(0) != '/') {
String uri = request.getContextPath() + "/" + request.getServletPath();
name = NetUtils.absolutize(uri, name);
}
return renderResponse.encodeURL(name);
} else if (name.startsWith(PREFIX_ACTION)) {
url = renderResponse.createActionURL();
name = name.substring(PREFIX_ACTION.length());
if (name.length() > 0 && name.charAt(0) == '/') {
name = name.substring(1);
}
} else {
throw new IllegalArgumentException("Invalid attribute name '" + name + "' for '" + getClass().getName() + "'");
}
Map parameters = new HashMap(7);
name = NetUtils.deparameterize(name, parameters);
if (name.length() > 0) {
parameters.put(PortletEnvironment.PARAMETER_PATH_INFO, name);
}
for (Iterator i = parameters.keySet().iterator(); i.hasNext();) {
String param = (String) i.next();
Object values = parameters.get(param);
if (values instanceof String) {
url.setParameter(param, (String) values);
} else {
url.setParameter(param, (String[]) values);
}
}
return url.toString();
} else {
if (name.startsWith(PREFIX_RENDER)) {
return name.substring(PREFIX_RENDER.length());
} else if (name.startsWith(PREFIX_RESOURCE)) {
return name.substring(PREFIX_RESOURCE.length());
} else if (name.startsWith(PREFIX_ACTION)) {
return name.substring(PREFIX_ACTION.length());
} else {
throw new IllegalArgumentException("Invalid attribute name '" + name + "' for '" + getClass().getName() + "'");
}
}
}
public Object[] getAttributeValues(String name, Configuration modeConf, Map objectModel) throws ConfigurationException {
Object result = getAttribute(name, modeConf, objectModel);
if (result != null) {
return new Object[]{result};
}
return null;
}
}