/*
* 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.lenya.modules.navigation;
import org.apache.lenya.cms.site.SiteException;
import org.apache.lenya.cms.site.SiteNode;
import org.apache.lenya.cms.site.SiteStructure;
import org.xml.sax.SAXException;
/**
* Select the node identified by the <em>path</em> parameter, its siblings,
* and its children recursively. If the path is "" or "/", the nodes of the
* whole site are generated. Only the links for the currently selected language
* are generated.
*/
public class SubtreeAndSiblingsSelector implements FragmentSelector {
public void selectFragment(NodeGenerator generator, SiteStructure site, String path, String lang)
throws SAXException, SiteException {
if (path.equals("/") || path.equals("")) {
SiteNode[] nodes = site.getTopLevelNodes();
selectNodes(generator, nodes, lang);
} else if (site.contains(path)) {
SiteNode node = site.getNode(path);
SiteNode[] siblings = getSiblings(node);
for (int i = 0; i < siblings.length; i++) {
if (siblings[i] == node) {
selectSubtree(generator, siblings[i], lang);
} else {
selectNode(generator, siblings[i], lang);
}
}
}
}
protected void selectNode(NodeGenerator generator, SiteNode node, String lang)
throws SAXException {
generator.startNode(node);
generator.generateLink(node, lang);
generator.endNode(node);
}
protected SiteNode[] getSiblings(SiteNode node) throws SiteException {
return node.isTopLevel() ? node.getStructure().getTopLevelNodes() : node.getParent()
.getChildren();
}
protected void selectSubtree(NodeGenerator generator, SiteNode node, String lang)
throws SAXException {
generator.startNode(node);
generator.generateLink(node, lang);
selectNodes(generator, node.getChildren(), lang);
generator.endNode(node);
}
protected void selectNodes(NodeGenerator generator, SiteNode[] nodes, String lang)
throws SAXException {
for (int i = 0; i < nodes.length; i++) {
selectSubtree(generator, nodes[i], lang);
}
}
}