001    /*
002     * Copyright (C) 2008-2010 by Holger Arndt
003     *
004     * This file is part of the Universal Java Matrix Package (UJMP).
005     * See the NOTICE file distributed with this work for additional
006     * information regarding copyright ownership and licensing.
007     *
008     * UJMP is free software; you can redistribute it and/or modify
009     * it under the terms of the GNU Lesser General Public License as
010     * published by the Free Software Foundation; either version 2
011     * of the License, or (at your option) any later version.
012     *
013     * UJMP is distributed in the hope that it will be useful,
014     * but WITHOUT ANY WARRANTY; without even the implied warranty of
015     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
016     * GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public
019     * License along with UJMP; if not, write to the
020     * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
021     * Boston, MA  02110-1301  USA
022     */
023    
024    package org.ujmp.core.treematrix;
025    
026    import java.util.ArrayList;
027    import java.util.HashMap;
028    import java.util.List;
029    import java.util.Map;
030    
031    import org.ujmp.core.collections.ArrayIndexList;
032    
033    public class DefaultTreeMatrix extends AbstractTreeMatrix {
034            private static final long serialVersionUID = -6752285310555819432L;
035    
036            private final List<Object> objects = new ArrayIndexList<Object>();
037    
038            private Object root = null;
039    
040            private final Map<Object, List<Object>> childrenMap = new HashMap<Object, List<Object>>();
041    
042            private final Map<Object, Object> parentMap = new HashMap<Object, Object>();
043    
044            
045            public List<Object> getChildren(Object o) {
046                    List<Object> children = childrenMap.get(o);
047                    if (children == null) {
048                            children = new ArrayList<Object>();
049                            childrenMap.put(o, children);
050                    }
051                    return children;
052            }
053    
054            public Map<Object, Object> getParentMap() {
055                    return parentMap;
056            }
057    
058            
059            public List<Object> getObjectList() {
060                    return objects;
061            }
062    
063            
064            public Object getRoot() {
065                    return root;
066            }
067    
068            
069            public void setRoot(Object o) {
070                    this.root = o;
071                    if (!objects.contains(o)) {
072                            objects.add(o);
073                    }
074                    notifyGUIObject();
075            }
076    
077    }