| /* |
| * 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.cocoon.portal.layout.renderer.aspect.impl; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.cocoon.environment.ObjectModelHelper; |
| import org.apache.cocoon.environment.Request; |
| import org.apache.cocoon.environment.Session; |
| import org.apache.cocoon.portal.PortalService; |
| import org.apache.cocoon.portal.acting.helpers.CopletEventDescription; |
| import org.apache.cocoon.portal.acting.helpers.LayoutEventDescription; |
| import org.apache.cocoon.portal.coplet.CopletInstanceData; |
| import org.apache.cocoon.portal.layout.Layout; |
| import org.apache.cocoon.portal.layout.impl.CopletLayout; |
| import org.apache.cocoon.portal.layout.renderer.aspect.RendererAspectContext; |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.SAXException; |
| |
| |
| /** |
| * Save the current state of the layout into the session. Takes into account |
| * state already present as request attribute. Includes aspect data and parameters |
| * as well as aspect data and attributes of a coplet instance if layout is a |
| * coplet layout. This aspect does not add to the XML created by the renderer chain. |
| * |
| * <h2>Example XML</h2> |
| * <pre> |
| * <!-- output from following renderers --> |
| * </pre> |
| * |
| * <h2>Applicable to:</h2> |
| * <ul> |
| * <li>{@link org.apache.cocoon.portal.layout.Layout}</li> |
| * </ul> |
| * |
| * @author <a href="mailto:cziegeler@s-und-n.de">Carsten Ziegeler</a> |
| * |
| * @version CVS $Id$ |
| */ |
| public class HistoryAspect |
| extends AbstractAspect { |
| |
| /** |
| * Add the values to the state |
| * @param id |
| * @param state |
| * @param values |
| * @param isCopletEvent tells if the event has to be a coplet event |
| */ |
| protected void addValues(String id, List state, Map values, String prefix,boolean isCopletEvent) { |
| final Iterator iter = values.entrySet().iterator(); |
| while ( iter.hasNext() ) { |
| final Map.Entry entry = (Map.Entry)iter.next(); |
| final String path = prefix + entry.getKey(); |
| if(!isCopletEvent){ |
| LayoutEventDescription led = new LayoutEventDescription(); |
| led.path = path; |
| led.layoutId = id; |
| led.data = entry.getValue(); |
| state.add(led); |
| }else{ |
| CopletEventDescription ced = new CopletEventDescription(); |
| ced.path = path; |
| ced.copletId = id; |
| ced.data = entry.getValue(); |
| state.add(ced); |
| } |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.cocoon.portal.layout.renderer.aspect.RendererAspect#toSAX(org.apache.cocoon.portal.layout.renderer.aspect.RendererAspectContext, org.apache.cocoon.portal.layout.Layout, org.apache.cocoon.portal.PortalService, org.xml.sax.ContentHandler) |
| */ |
| public void toSAX(RendererAspectContext context, |
| Layout layout, |
| PortalService service, |
| ContentHandler handler) |
| throws SAXException { |
| if ( layout.getId() != null ) { |
| final Request request = ObjectModelHelper.getRequest(context.getObjectModel()); |
| final Session session = request.getSession(false); |
| if ( session != null ) { |
| List history = (List)session.getAttribute("portal-history"); |
| if ( history == null ) { |
| |
| history = new ArrayList(); |
| } |
| List state = (List)request.getAttribute("portal-history"); |
| if ( state == null ) { |
| state = new ArrayList(); |
| request.setAttribute("portal-history", state); |
| history.add(state); |
| } |
| |
| this.addValues(layout.getId(), state, layout.getAspectDatas(), "aspectDatas/",false); |
| this.addValues(layout.getId(), state, layout.getParameters(), "parameters/",false); |
| |
| // are we a coplet layout |
| if ( layout instanceof CopletLayout ) { |
| CopletInstanceData cid = ((CopletLayout)layout).getCopletInstanceData(); |
| this.addValues(cid.getId(), state, cid.getAspectDatas(), "aspectDatas/",true); |
| this.addValues(cid.getId(), state, cid.getAttributes(), "attributes/",true); |
| } |
| session.setAttribute("portal-history", history); |
| } |
| } |
| context.invokeNext(layout, service, handler); |
| } |
| |
| } |