nl.tue.gale.ae.processor.view.StaticTreeView.java Source code

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Here is the source code for nl.tue.gale.ae.processor.view.StaticTreeView.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/>.
    
 */
/**
 * StaticTreeView.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.view;

import java.util.LinkedList;
import java.util.List;

import nl.tue.gale.ae.GaleContext;
import nl.tue.gale.ae.Resource;
import nl.tue.gale.common.GaleUtil;
import nl.tue.gale.common.uri.URIs;
import nl.tue.gale.dm.data.Concept;

import org.dom4j.Element;

public class StaticTreeView extends AbstractView {
    private void menuList(TreeNode parent, List<TreeNode> pathlist, int listindex, Element table, TreeNode rootnode,
            GaleContext gale, TreeNodes nodes) {
        if (parent.getChildren().length == 0)
            return;
        for (String node : parent.getChildren()) {
            table.add(createRowElement(gale.dm().get(URIs.of(node)), listindex * 15,
                    node.equals(rootnode.getConcept())));
            if (listindex < pathlist.size())
                if (node.equals((pathlist.get(listindex)).getConcept()) || node.equals(rootnode.getConcept()))
                    menuList(nodes.get(node), pathlist, listindex + 1, table, rootnode, gale, nodes);
        }
    }

    public Element getXml(Resource resource, Object... params) {
        if ("true".equals(GaleUtil.getParam(params, "css")))
            return getCssXml(resource, params);
        String smaxDepth = GaleUtil.getParam(params, "maxdepth");
        int maxDepth = 20;
        if (smaxDepth != null)
            maxDepth = Integer.parseInt(smaxDepth);

        GaleContext gale = GaleContext.of(resource);

        Element table = GaleUtil.createHTMLElement("table");
        // table.addAttribute("style",
        // "font-family:Tahoma,Arial;font-size:medium");

        TreeNodes nodes = new TreeNodes(gale);
        TreeNode rootnode = nodes.get(gale.conceptUri().toString());

        TreeNode curnode = rootnode;
        List<TreeNode> path = new LinkedList<TreeNode>();
        while (curnode != null && maxDepth > 0) {
            path.add(0, curnode);
            curnode = (curnode.getParents().length > 0 ? nodes.get(curnode.getParents()[0]) : null);
            maxDepth--;
        }

        boolean showRoot = (curnode != null);
        while (curnode != null && curnode.getParents().length > 0)
            curnode = nodes.get(curnode.getParents()[0]);
        if (showRoot) {
            table.add(createRowElement(gale.dm().get(URIs.of(curnode.getConcept())), 0,
                    curnode.getConcept().equals(rootnode.getConcept())));
        }
        curnode = path.get(0);
        table.add(createRowElement(gale.dm().get(URIs.of(curnode.getConcept())), 0,
                curnode.getConcept().equals(rootnode.getConcept())));
        menuList(curnode, path, 1, table, rootnode, gale, nodes);

        return table;
    }

    private Element getCssXml(Resource resource, Object[] params) {
        GaleContext gale = GaleContext.of(resource);
        TreeNodes nodes = new TreeNodes(gale);
        TreeNode rootnode = nodes.get(gale.conceptUri().toString());
        TreeNode curnode = rootnode;
        List<TreeNode> path = new LinkedList<TreeNode>();
        while (curnode != null) {
            path.add(0, curnode);
            curnode = (curnode.getParents().length > 0 ? nodes.get(curnode.getParents()[0]) : null);
        }

        Element result = GaleUtil.createHTMLElement("div");
        result.addAttribute("id", "static-tree-view");
        curnode = path.get(0);
        Element ul = createMenu(gale, nodes, curnode, rootnode, path);
        ul.addAttribute("id", "nav");
        result.add(ul);
        return result;
    }

    private Element createMenu(GaleContext gale, TreeNodes nodes, TreeNode curNode, TreeNode rootNode,
            List<TreeNode> path) {
        Element result = GaleUtil.createHTMLElement("ul");
        for (String child : curNode.getChildren()) {
            Element li = createMenuItem(gale, child);
            if (rootNode.getConcept().equals(child))
                li.addAttribute("class", "current");
            if (path.contains(new TreeNode(child, null, null)) && nodes.get(child).getChildren().length > 0) {
                li.add(createMenu(gale, nodes, nodes.get(child), rootNode, path));
            }
            result.add(li);
        }
        return result;
    }

    private Element createMenuItem(GaleContext gale, String conceptName) {
        Element result = GaleUtil.createHTMLElement("li");
        Element a = GaleUtil.createNSElement("a", GaleUtil.adaptns);
        result.add(a);
        Concept c = gale.dm().get(URIs.of(conceptName));
        a.addText(c.getTitle());
        a.addAttribute("href", c.getUriString());
        return result;
    }
}