* 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.

*/

* 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>

*   &lt;remove-uri&gt;layout-remove-event&lt;/remove-uri&gt;

*   &lt;!-- output from following renderers --&gt;

* </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 30932 2004-07-29 17:35:38Z vgritsenko $

*/

    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);

  }

}