/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  package org.apache.myfaces.custom.tree2;
  
  import java.util.List;
  import java.util.ArrayList;
  
  public class TreeNodeBase implements TreeNode, Comparable
  {
      private static final long serialVersionUID = 278589014441538822L;
      private List children = new ArrayList();
      private String type;
      private String description;
      private boolean leaf;
      private String identifier;
  
      public TreeNodeBase()
      {}
  
      public TreeNodeBase(String type, String description, boolean leaf)
      {
          this(type, description, null, leaf);
      }
  
      public TreeNodeBase(String type, String description, String identifier, boolean leaf)
      {
          this.type = type;
          this.description = description;
          this.identifier = identifier;
          this.leaf = leaf;
      }
  
      public boolean isLeaf()
      {
          return leaf || (getChildCount() == 0);
      }
  
      public void setLeaf(boolean leaf)
      {
          this.leaf = leaf;
      }
  
      public List getChildren()
      {
          return children;
      }
  
      public String getType()
      {
          return type;
      }
  
      public void setType(String type)
      {
          this.type = type;
      }
  
      public void setDescription(String description)
      {
          this.description = description;
      }
  
      public String getDescription()
      {
          return description;
      }
  
      public void setIdentifier(String identifier)
      {
          this.identifier = identifier;
      }
  
      public String getIdentifier()
      {
          return identifier;
      }
  
      public int getChildCount()
      {
          return getChildren().size();
      }
  
     public int compareTo(Object obj)
     {
         // branches come before leaves, after this criteria nodes are sorted alphabetically
         TreeNode otherNode = (TreeNode)obj;
 
         if (isLeaf() && !otherNode.isLeaf())
         {
             // leaves come after branches
             return 1;
         }
         else if (!isLeaf() && otherNode.isLeaf())
         {
             // branches come before leaves
             return -1;
         }
         else
         {
             // both nodes are leaves or both node are branches, so compare the descriptions
             return getDescription().compareTo(otherNode.getDescription());
         }
     }
 }