/*
* 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 org.apache.cocoon.portal.PortalService;
import org.apache.cocoon.portal.coplet.CopletInstanceData;
import org.apache.cocoon.portal.event.impl.LayoutRemoveEvent;
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.apache.cocoon.xml.XMLUtils;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
/**
* Add a tag holding a URI used to remove a coplet from a layout to the
* output stream if the coplet is not set to mandatory.
*
* <h2>Example XML:</h2>
* <pre>
* <remove-uri>layout-remove-event</remove-uri>
* <!-- output from following renderers -->
* </pre>
*
* <h2>Applicable to:</h2>
* <ul>
* <li>{@link org.apache.cocoon.portal.layout.impl.CopletLayout}</li>
* </ul>
*
* @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: RemovableAspect.java,v 1.7 2004/04/25 20:09:34 haul Exp $
*/
public class RemovableAspect
extends AbstractAspect {
/* (non-Javadoc)
* @see org.apache.cocoon.portal.layout.renderer.RendererAspect#toSAX(org.apache.cocoon.portal.layout.renderer.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 {
CopletInstanceData cid = ((CopletLayout)layout).getCopletInstanceData();
Boolean mandatory = (Boolean)cid.getCopletData().getAspectData("mandatory");
if ( !mandatory.booleanValue() ) {
LayoutRemoveEvent lre = new LayoutRemoveEvent(layout);
XMLUtils.createElement(handler, "remove-uri", service.getComponentManager().getLinkService().getLinkURI(lre));
}
context.invokeNext(layout, service, handler);
}
}