nl.tue.gale.ae.processor.xmlmodule.PluginModule.java Source code

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Here is the source code for nl.tue.gale.ae.processor.xmlmodule.PluginModule.java

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/*
    
   This file is part of GALE (Generic Adaptation Language and Engine).
    
GALE is free software: you can redistribute it and/or modify it under the 
terms of the GNU Lesser General Public License as published by the Free 
Software Foundation, either version 3 of the License, or (at your option) 
any later version.
    
GALE is distributed in the hope that it will be useful, but WITHOUT ANY 
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for 
more details.
    
You should have received a copy of the GNU Lesser General Public License
along with GALE. If not, see <http://www.gnu.org/licenses/>.
    
 */
/**
 * PluginModule.java
 * Last modified: $Date$
 * In revision:   $Revision$
 * Modified by:   $Author$
 *
 * Copyright (c) 2008-2011 Eindhoven University of Technology.
 * All Rights Reserved.
 *
 * This software is proprietary information of the Eindhoven University
 * of Technology. It may be used according to the GNU LGPL license.
 */
package nl.tue.gale.ae.processor.xmlmodule;

import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import nl.tue.gale.ae.GaleContext;
import nl.tue.gale.ae.ProcessorException;
import nl.tue.gale.ae.Resource;
import nl.tue.gale.common.GaleUtil;
import nl.tue.gale.common.uri.URI;
import nl.tue.gale.common.uri.URIs;

import org.dom4j.DocumentFactory;
import org.dom4j.Element;

public class PluginModule extends AbstractModule {
    private List<String> mimeToHandle = Arrays.asList(new String[] { "text/xhtml" });

    public List<String> getMimeToHandle() {
        return mimeToHandle;
    }

    public void setMimeToHandle(List<String> mimeToHandle) {
        this.mimeToHandle = mimeToHandle;
    }

    @SuppressWarnings("unchecked")
    public Element traverse(Element element, Resource resource) throws ProcessorException {
        // first process the children (content of new anchor tag)
        processor.traverseChildren(element, resource);
        // create new anchor tag
        Element a = DocumentFactory.getInstance()
                .createElement(DocumentFactory.getInstance().createQName("a", "", "http://www.w3.org/1999/xhtml"));
        // backward compatibility
        List<Element> dlist = element.elements("linkdescription");
        Element parent = (dlist.size() == 0 ? element : dlist.get(0));
        // add children to new anchor tag
        a.appendContent(parent);
        /*
         * List<Node> nodes = new ArrayList<Node>(); for (Node node :
         * (List<Node>) parent.content()) nodes.add(node); for (Node node :
         * nodes) a.(node);
         */
        // plugin name
        String name = element.attributeValue("name");
        if (name == null)
            name = element.elementText("name");
        // add parameters
        URI reqUri = URIs.of(GaleContext.req(resource).getRequestURL().toString());
        Map<String, String> params = new HashMap<String, String>();
        params.put("plugin", name);
        for (Element child : (List<Element>) element.elements("param"))
            params.put(child.attributeValue("name"), child.attributeValue("value"));
        reqUri = GaleUtil.setURIPart(reqUri, GaleUtil.URIPart.QUERY, GaleUtil.getQueryString(params));
        // finish the new anchor tag
        a.addAttribute("href", reqUri.toString());
        a.addAttribute("class", "good");
        // replace the original tag by the new anchor tag
        GaleUtil.replaceNode(element, a);
        return null;
    }
}