/*
* Copyright 1999-2004 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.components.treeprocessor.sitemap;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.thread.ThreadSafe;
import org.apache.cocoon.components.treeprocessor.NamedContainerNodeBuilder;
import org.apache.cocoon.components.treeprocessor.NamedProcessingNode;
import org.apache.cocoon.components.treeprocessor.ProcessingNode;
/**
* Builds a <map:view>
*
* @author <a href="mailto:sylvain@apache.org">Sylvain Wallez</a>
* @version CVS $Id: ViewNodeBuilder.java,v 1.2 2004/03/05 13:02:52 bdelacretaz Exp $
*/
public class ViewNodeBuilder extends NamedContainerNodeBuilder implements ThreadSafe {
public ProcessingNode buildNode(Configuration config) throws Exception {
// Get the label or position (pseudo-label) of this view.
String label = config.getAttribute("from-label", null);
if (label == null) {
String position = config.getAttribute("from-position");
if ("first".equals(position)) {
label = SitemapLanguage.FIRST_POS_LABEL;
} else if ("last".equals(position)) {
label = SitemapLanguage.LAST_POS_LABEL;
} else {
String msg = "Bad value for 'from-position' at " + config.getLocation();
throw new ConfigurationException(msg);
}
}
SitemapLanguage sitemapBuilder = (SitemapLanguage)this.treeBuilder;
// Indicate to child builders that we're in a view (they won't perform view branching)
sitemapBuilder.setBuildingView(true);
// Build children
NamedProcessingNode result = (NamedProcessingNode)super.buildNode(config);
sitemapBuilder.addViewForLabel(label, result.getName());
// Clear the flag
sitemapBuilder.setBuildingView(false);
return result;
}
}