001    /*
002     * Copyright (C) 2012 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.text.ui;
021    
022    import org.crsh.text.LineRenderer;
023    
024    import java.util.ArrayList;
025    import java.util.List;
026    
027    public class TreeElement extends Element {
028    
029      /** An optional value element. */
030      Element value;
031    
032      /** . */
033      final List<Element> children = new ArrayList<Element>();
034    
035      public TreeElement() {
036        this((Element)null);
037      }
038    
039      public TreeElement(Element value) {
040        this.value = value;
041      }
042    
043      public TreeElement(String value) {
044        this.value = new LabelElement(value);
045      }
046    
047      public TreeElement addChild(Element child) {
048        children.add(child);
049        return this;
050      }
051    
052      public int getSize() {
053        return children.size();
054      }
055    
056      public Element getValue() {
057        return value;
058      }
059    
060      public Element getNode(int index) {
061        return children.get(index);
062      }
063    
064      @Override
065      public LineRenderer renderer() {
066        return new TreeLineRenderer(this);
067      }
068    }