package org.apache.maven.doxia.module.confluence.parser.list;
   
   /*
    * 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.
   */
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.maven.doxia.module.confluence.parser.Block;
  import org.apache.maven.doxia.module.confluence.parser.ChildBlocksBuilder;
  
  /**
   * <p>TreeListBuilder class.</p>
   */
  public class TreeListBuilder
  {
      private TreeComponent root;
  
      private TreeComponent current;
  
      TreeListBuilder()
      {
          root = new TreeComponent( null, "root", 0 );
  
          current = root;
      }
  
      void feedEntry( int type, int level, String text )
      {
          int currentDepth = current.getDepth();
  
          int incomingLevel = level - 1;
  
          if ( incomingLevel == currentDepth )
          {
              // nothing to move
          }
          else if ( incomingLevel > currentDepth )
          {
              // el actual ahora es el �ltimo que insert�
              List<TreeComponent> components = current.getChildren();
  
              if ( components.size() == 0 )
              {
                  /* for example:
                   *        * item1
                   *     * item2
                   */
                  for ( int i = 0, n = incomingLevel - currentDepth; i < n; i++ )
                  {
                      current = current.addChildren( "", type );
                  }
              }
              else
              {
                  current = components.get( components.size() - 1 );
              }
          }
          else
          {
              for ( int i = 0, n = currentDepth - incomingLevel; i < n; i++ )
              {
                  current = current.getFather();
  
                  if ( current == null )
                  {
                      throw new IllegalStateException();
                  }
              }
          }
          current.addChildren( text.trim(), type );
      }
  
      ListBlock getBlock()
      {
          return getList( root );
      }
  
      private ListBlock getList( TreeComponent treeComponent )
      {
          List<Block> list = getListItems( treeComponent );
  
          int type = treeComponent.getChildren().get( 0 ).getType();
 
         if ( type == ListBlockParser.BULLETED_LIST )
         {
             return new BulletedListBlock( list );
         }
 
         return new NumberedListBlock( list );
     }
 
     private List<Block> getListItems( TreeComponent tc )
     {
         List<Block> blocks = new ArrayList<>();
 
         for ( TreeComponent child : tc.getChildren() )
         {
             List<Block> childBlocks = new ArrayList<>();
 
             if ( child.getFather() != null )
             {
                 childBlocks.addAll( new ChildBlocksBuilder( child.getText() ).getBlocks() );
             }
 
             if ( child.getChildren().size() != 0 )
             {
                 blocks.add( new ListItemBlock( childBlocks, getList( child ) ) );
             }
             else
             {
                 blocks.add( new ListItemBlock( childBlocks ) );
             }
         }
 
         return blocks;
     }
 }