/*
* 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.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.apache.cocoon.portal.PortalService;
import org.apache.cocoon.portal.layout.Layout;
import org.apache.cocoon.portal.layout.CompositeLayout;
import org.apache.cocoon.portal.layout.Item;
import org.apache.cocoon.portal.layout.renderer.aspect.RendererAspect;
import org.apache.cocoon.portal.layout.renderer.aspect.RendererAspectContext;
import org.apache.cocoon.portal.layout.renderer.Renderer;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
/**
* The renderer aspect context is passed to every renderer aspect.
* Using this context, a renderer aspect can get it's configuration
* and it can invoke (if wanted) the next aspect in the aspect chain.
*
* @author <a href="mailto:cziegeler@s-und-n.de">Carsten Ziegeler</a>
* @author <a href="mailto:volker.schmitt@basf-it-services.com">Volker Schmitt</a>
*
* @version CVS $Id: DefaultRendererContext.java 433543 2006-08-22 06:22:54Z crossley $
*/
public final class DefaultRendererContext implements RendererAspectContext {
private Iterator iterator;
private Iterator configIterator;
private Object config;
private Map attributes;
private Map objectModel;
private boolean isRendering;
private boolean isRequired;
public DefaultRendererContext(RendererAspectChain chain, Layout layout, PortalService service) {
this.iterator = chain.getIterator();
this.configIterator = chain.getConfigIterator();
this.isRequired = chain.isRequired();
Layout entryLayout = service.getEntryLayout(null);
if (service.isRenderable().booleanValue()) {
this.isRendering = true;
return;
}
if (entryLayout == layout) {
this.isRendering = true;
service.setRenderable(Boolean.TRUE);
}
}
/* (non-Javadoc)
* @see org.apache.cocoon.portal.layout.renderer.RendererAspectContext#invokeNext(org.apache.cocoon.portal.layout.Layout, org.apache.cocoon.portal.PortalService, org.xml.sax.ContentHandler)
*/
public void invokeNext(Layout layout,
PortalService service,
ContentHandler handler)
throws SAXException {
if (!this.isRendering && !this.isRequired) {
if (layout instanceof CompositeLayout) {
CompositeLayout compositeLayout = (CompositeLayout)layout;
for (Iterator iter = compositeLayout.getItems().iterator(); iter.hasNext();) {
Layout itemLayout = ((Item) iter.next()).getLayout();
if ( itemLayout != null ) {
final String rendererName = itemLayout.getRendererName();
final Renderer renderer = service.getComponentManager().getRenderer(rendererName);
renderer.toSAX(itemLayout, service, handler);
}
}
}
return;
}
if (iterator.hasNext()) {
this.config = this.configIterator.next();
final RendererAspect aspect = (RendererAspect) iterator.next();
aspect.toSAX(this, layout, service, handler);
}
}
public boolean isRendering() {
return this.isRendering;
}
/* (non-Javadoc)
* @see org.apache.cocoon.portal.layout.renderer.RendererAspectContext#getConfiguration()
*/
public Object getAspectConfiguration() {
return this.config;
}
/**
* Set an attribute
*/
public void setAttribute(String key, Object attribute) {
if ( key != null ) {
if ( this.attributes == null ) {
this.attributes = new HashMap(10);
}
this.attributes.put( key, attribute );
}
}
/**
* Get an attribute
*/
public Object getAttribute(String key) {
if ( key != null && this.attributes != null) {
return this.attributes.get( key );
}
return null;
}
/**
* Remove an attribute
*/
public void removeAttribute(String key) {
if ( this.attributes != null && key != null) {
this.attributes.remove( key );
}
}
/* (non-Javadoc)
* @see org.apache.cocoon.portal.layout.renderer.aspect.RendererAspectContext#getObjectModel()
*/
public Map getObjectModel() {
return this.objectModel;
}
/**
* Set the object model
* @param map The object model
*/
public void setObjectModel(Map map) {
this.objectModel = map;
}
}