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

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Here is the source code for nl.tue.gale.ae.processor.xmlmodule.HTMLModule.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/>.
    
 */
/**
 * HTMLModule.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.List;

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.Element;

public class HTMLModule 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 {
        Element head = element.element("head");
        if (head == null) {
            head = element.addElement("head");
            head.detach();
            element.content().add(0, head);
        }
        traverse_head(head, resource);
        return element;
    }

    @SuppressWarnings("unchecked")
    private void traverse_head(Element head, Resource resource) {
        GaleContext gale = GaleContext.of(resource);
        String css = (String) gale.cfgm().getObject("gale://gale.tue.nl/config/presentation#css", resource);
        Element base = head.element("base");
        if (base == null)
            base = head.addElement("base").addAttribute("href", getBaseLocation(resource));
        base.detach();
        head.content().add(0, base);
        for (String cssPart : css.split(";")) {
            Element ecss = head.addElement("link").addAttribute("rel", "stylesheet")
                    .addAttribute("type", "text/css").addAttribute("href", cssPart);
            ecss.detach();
            head.content().add((cssPart.contains("${home}") ? 0 : 1), ecss);
        }
        String titleValue = (String) gale.cfgm().getObject("gale://gale.tue.nl/config/presentation#title",
                resource);
        Element title = head.addElement("title").addText(titleValue);
        title.detach();
        head.content().add(0, title);
    }

    private String getBaseLocation(Resource resource) {
        GaleContext gale = GaleContext.of(resource);
        String result = resource.get("original-url").toString();
        if (result.startsWith("gale:")) {
            URI uri = URIs.of(result);
            URI reqUri = URIs.of(gale.req().getRequestURL().toString());
            reqUri = GaleUtil.setURIPart(reqUri, GaleUtil.URIPart.QUERY, null);
            reqUri = GaleUtil.setURIPart(reqUri, GaleUtil.URIPart.FRAGMENT, null);
            result = reqUri.toString() + "/${home}" + uri.getPath();
        }
        return result;
    }
}