// Copyright May 16, 2006 The Apache Software Foundation
   //
   // Licensed 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 net.sf.tacos.util;
  
  import org.apache.tapestry.IMarkupWriter;
  import org.apache.tapestry.NestedMarkupWriter;
  import org.apache.tapestry.json.JSONObject;
  import org.apache.tapestry.markup.Attribute;
  
  /**
   * A {@link IMarkupWriter} that only gathers attributes and
   * attribute values into a JSON structure.
   */
  public class JSONMarkupWriter implements IMarkupWriter
  {
      private JSONObject json;
      
      public JSONMarkupWriter()
      {
          json = new JSONObject();
      }
      
      public JSONObject getAttributes()
      {
          return json;
      }
  
      public void attribute(String name, int value)
      {
          json.put(name, value);
      }
  
      public void attribute(String name, boolean value)
      {
          json.put(name, value);
      }
  
      public void attribute(String name, String value)
      {
          // look for hints
          if (name.endsWith("AsInt"))
              attribute(name.substring(0, name.length() - 5), Integer.parseInt(value));
          else if (name.endsWith("AsBoolean"))
              attribute(name.substring(0, name.length() - 9), Boolean.valueOf(value).booleanValue());
          
          // look for known names
          else if (name.endsWith("Duration"))
              attribute(name, Integer.parseInt(value));
          else
              json.put(name, value);
      }
  
      public void attributeRaw(String name, String value)
      {
          json.put(name, value);
      }
      
      public void appendAttribute(String name, int value)
      {        
      }
  
      public void appendAttribute(String name, boolean value)
      {        
      }
  
      public void appendAttribute(String name, String value)
      {        
      }
  
      public void appendAttributeRaw(String name, String value)
      {        
      }
      
      public boolean hasAttribute(String name)
      {
          return false;
      }
      
      public Attribute getAttribute(String name)
      {
          return null;
      }
      
      public Attribute removeAttribute(String name)
      {
          return null;
      }
     
     public void clearAttributes()
     {        
     }
 
     public void begin(String name)
     {
     }
 
     public void beginEmpty(String name)
     {
     }
 
     public boolean checkError()
     {
         return false;
     }
 
     public void close()
     {
     }
 
     public void closeTag()
     {
     }
 
     public void comment(String value)
     {
     }
 
     public void end()
     {
     }
 
     public void end(String name)
     {
     }
 
     public void flush()
     {
     }
 
     public NestedMarkupWriter getNestedWriter()
     {
         return null;
     }
 
     public void print(char[] data, int offset, int length)
     {
     }
 
     public void print(char[] data, int offset, int length, boolean raw)
     {
     }
 
     public void print(char value)
     {
     }
 
     public void print(int value)
     {
     }
 
     public void print(String value)
     {
     }
 
     public void print(String value, boolean raw)
     {
     }
 
     public void println()
     {
     }
 
     public void printRaw(char[] buffer, int offset, int length)
     {
     }
 
     public void printRaw(String value)
     {
     }
 
     public String getContentType()
     {
         return "";
     }
     
 }