nl.tue.gale.ae.config.PresentationConfig.java Source code

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Here is the source code for nl.tue.gale.ae.config.PresentationConfig.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/>.
    
 */
/**
 * PresentationConfig.java
 * Last modified: $Date$
 * In revision:   $Revision$
 * Modified by:   $Author: dsmits $
 *
 * 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.config;

import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;

import nl.tue.gale.ae.GaleContext;
import nl.tue.gale.ae.Resource;
import nl.tue.gale.ae.processor.view.LayoutView;
import nl.tue.gale.common.GaleUtil;
import nl.tue.gale.common.cache.CacheSession;
import nl.tue.gale.common.uri.URI;
import nl.tue.gale.common.uri.URIs;
import nl.tue.gale.um.data.EntityValue;

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

public class PresentationConfig implements ConfigResolver {
    private static final URI configIdentifier = URIs.of("gale://gale.tue.nl/config/presentation");

    private Map<String, LayoutView> viewTable = new HashMap<String, LayoutView>();

    public void setViewTable(Map<String, LayoutView> viewTable) {
        this.viewTable = viewTable;
    }

    public Map<String, LayoutView> getViewTable() {
        return viewTable;
    }

    public URI getConfigIdentifier() {
        return configIdentifier;
    }

    private String defaultCSS = "${home}/gale.css";

    public String getDefaultCSS() {
        return defaultCSS;
    }

    public void setDefaultCSS(String defaultCSS) {
        this.defaultCSS = defaultCSS;
    }

    public Object getObject_css(Resource resource) {
        String css = defaultCSS;
        GaleContext gale = GaleContext.of(resource);
        CacheSession<EntityValue> session = gale.openUmSession();
        EntityValue ev = session.get(URIs.of("#layout.css"));
        if (ev != null)
            css = ev.getValue().toString().trim();
        return css;
    }

    public Object getObject_cssLayout(Resource resource) {
        String cssLayout = null;
        GaleContext gale = GaleContext.of(resource);
        CacheSession<EntityValue> session = gale.openUmSession();
        EntityValue ev = session.get(URIs.of("#layout.content"));
        if (ev != null)
            cssLayout = ev.getValue().toString().trim();
        return cssLayout;
    }

    private static final URI titleFragment = URIs.of("#layout.title");

    public Object getObject_title(Resource resource) {
        String title = null;
        GaleContext gale = GaleContext.of(resource);
        EntityValue ev = gale.openUmSession().get(titleFragment);
        if (ev != null) {
            String titleExpr = ev.getValue().toString().trim();
            title = (String) gale.eval(titleExpr);
        }
        if (title == null)
            title = gale.concept().getTitle();
        return title;
    }

    public Object getObject_layout(Resource resource) {
        Element result = DocumentFactory.getInstance().createElement("struct");
        result.addAttribute("cols", "20%;*");
        result.addElement("view").addAttribute("name", "static-tree-view");
        result.addElement("content");

        GaleContext gale = GaleContext.of(resource);
        CacheSession<EntityValue> session = gale.openUmSession();
        EntityValue ev = session.get(URIs.of("#layout"));

        if (ev == null) {
            /*
             * if (gale.conceptUri().toString().startsWith(
             * "gale://gale.tue.nl/aha3/tutorial") &&
             * "page".equals(gale.concept().getType())) return result;
             */
            return null;
        }
        if (ev.getValue().toString().trim().equals(""))
            return null;
        return GaleUtil.parseXML(new StringReader(ev.getValue().toString())).getRootElement();
    }

    @Override
    public Object getObject(String name, Resource resource) {
        if ("css".equals(name))
            return getObject_css(resource);
        if ("cssLayout".equals(name))
            return getObject_cssLayout(resource);
        if ("layout".equals(name))
            return getObject_layout(resource);
        if ("title".equals(name))
            return getObject_title(resource);
        if (name.startsWith("view-")) {
            return viewTable.get(name.substring(5));
        }
        throw new UnsupportedOperationException("'" + name + "' not supported");
    }
}