/*
* Copyright 1999-2002,2004 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.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.renderer.aspect.RendererAspect;
import org.apache.cocoon.portal.layout.renderer.aspect.RendererAspectContext;
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,v 1.6 2004/04/25 20:09:34 haul Exp $
*/
public final class DefaultRendererContext implements RendererAspectContext {
private Iterator iterator;
private Iterator configIterator;
private Object config;
private Map attributes;
private Map objectModel;
public DefaultRendererContext(RendererAspectChain chain) {
this.iterator = chain.getIterator();
this.configIterator = chain.getConfigIterator();
}
/* (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 (iterator.hasNext()) {
this.config = this.configIterator.next();
final RendererAspect aspect = (RendererAspect) iterator.next();
aspect.toSAX(this, layout, service, handler);
}
}
/* (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;
}
}