/* *  Copyright (c) 2001 Sun Microsystems, Inc.  All rights *  reserved. * *  Redistribution and use in source and binary forms, with or without *  modification, are permitted provided that the following conditions *  are met: * *  1. Redistributions of source code must retain the above copyright *  notice, this list of conditions and the following disclaimer. * *  2. Redistributions in binary form must reproduce the above copyright *  notice, this list of conditions and the following disclaimer in *  the documentation and/or other materials provided with the *  distribution. * *  3. The end-user documentation included with the redistribution, *  if any, must include the following acknowledgment: *  "This product includes software developed by the *  Sun Microsystems, Inc. for Project JXTA." *  Alternately, this acknowledgment may appear in the software itself, *  if and wherever such third-party acknowledgments normally appear. * *  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" *  must not be used to endorse or promote products derived from this *  software without prior written permission. For written *  permission, please contact Project JXTA at http://www.jxta.org. * *  5. Products derived from this software may not be called "JXTA", *  nor may "JXTA" appear in their name, without prior written *  permission of Sun. * *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF *  SUCH DAMAGE. *  ==================================================================== * *  This software consists of voluntary contributions made by many *  individuals on behalf of Project JXTA.  For more *  information on Project JXTA, please see *  <http://www.jxta.org/>. * *  This license is based on the BSD license adopted by the Apache Foundation. * *  $Id: JxtaNodeLoader.java,v 1.3 2005/08/25 16:43:42 nano Exp $ */package net.jxta.myjxta.ui.graph;import edu.berkeley.guir.prefuse.ItemRegistry;import edu.berkeley.guir.prefuse.graph.external.ExternalEntity;import edu.berkeley.guir.prefuse.graph.external.ExternalNode;import edu.berkeley.guir.prefuse.graph.external.ExternalTreeNode;import edu.berkeley.guir.prefuse.graph.external.GraphLoader;import net.jxta.myjxta.util.objectmodel.*;import java.util.Iterator;/** * * @version $Id: JxtaNodeLoader.java,v 1.3 2005/08/25 16:43:42 nano Exp $ * * @author james todd [gonzo at jxta dot org] */public class JxtaNodeLoader        extends GraphLoader {        public static final String LABEL = "label";    public static final String ID = "id";    public static final String IMAGE = "image";    public JxtaNodeLoader(ItemRegistry registry) {        super(registry, ID);    }        public ExternalEntity loadNode(int type, JxtaNode jn) {        ExternalEntity ee = null;        ExternalEntity pe = null;        JxtaNode pn = jn;        while ((pn = (JxtaNode)MyJxtaObjectRepository.getObjectRepository().getParent(pn)) != null ) {            ee = loadNode(GraphLoader.LOAD_PARENT, pn);                        if (pe == null) {                pe = ee;            }        }                return loadNode(type, pe, jn);    }        public ExternalEntity loadNode(int type, ExternalEntity o, JxtaNode jn) {                ExternalEntity n = null;        String id = MyJxtaObjectRepository.getObjectRepository().getNormalizedPath(jn);                if (m_cache.containsKey(id)) {            n = (ExternalEntity)m_cache.get(id);                    } else {            if (type == GraphLoader.LOAD_NEIGHBORS) {                n = new ExternalNode();                            } else {                n = new ExternalTreeNode();                            }                                                n.setAttribute(IMAGE,  getImageLocation(jn));            n.setAttribute(LABEL, jn.toString());            n.setAttribute(ID, id);        }                foundNode(type, o, n, null);                return n;    }        /* Gets the Imagelocation of this Nodes image resource. This location is     * added in Graph.java as a resource to ImageFactory     * @param jxtanode     * @return String location of image resource     */    private String getImageLocation(JxtaNode jn) {        // xxx: if we had an image location attribute in jxtanode we could have        //      personal icons attached to groups and peers        String imageLocation = null;        if( jn != null) {            if(jn instanceof GroupNode) {                imageLocation = "TreeTable.PeerGroup";            }            if(jn instanceof ShareNode) {                imageLocation = "TreeTable.Share";            }            if(jn instanceof PeerNode) {                imageLocation = "TreeTable.PeerPresent";            }        }        //default image is needed        if(imageLocation == null) {            imageLocation = "TreeTable.PeerPresent";        }                return imageLocation;    }        protected void getNeighbors(ExternalNode n) {        JxtaNode jn = getNode(n.getAttribute(ID));        JxtaNode pn= MyJxtaObjectRepository.getObjectRepository().getParent(jn);                if (pn != null) {            loadNode(GraphLoader.LOAD_NEIGHBORS, n, pn);                        for (Iterator c = pn.getChildren(); c.hasNext(); ) {                loadNode(GraphLoader.LOAD_NEIGHBORS, n,                        (JxtaNode)c.next());            }        }    }        protected void getChildren(ExternalTreeNode n) {        JxtaNode jn = getNode(n.getAttribute(ID));        MyJxtaObjectRepository objectRepository = MyJxtaObjectRepository.getObjectRepository();        int count=objectRepository.getChildCount(jn);        for (int i=0;i<count;i++){            loadNode(GraphLoader.LOAD_CHILDREN, n,                    (JxtaNode)objectRepository.getChild(jn,i));        }//        for (Iterator c = jn.getChildren(); c.hasNext(); ) {//            loadNode(GraphLoader.LOAD_CHILDREN, n,//                    (JxtaNode)c.next());//        }    }        protected void getParent(ExternalTreeNode n) {                JxtaNode jn = getNode(n.getAttribute(ID));        if(jn != null) {            JxtaNode pn= MyJxtaObjectRepository.getObjectRepository().getParent(jn);//            JxtaNode pn = (JxtaNode)jn.getParent();                                    if (pn != null) {                loadNode(GraphLoader.LOAD_PARENT, n, pn);            }        }    }        private JxtaNode getNode(String path) {        return MyJxtaObjectRepository.getObjectRepository().getNodeFromNormalizedPath(path);    }}