TagProcessorRegistry.java :  » Portal » Open-Portal » com » sun » portal » wireless » htmlconversion » Java Open Source

/*
 * Created on Feb 9, 2005
 *
 */
package com.sun.portal.wireless.htmlconversion;

import java.util.HashMap;

import com.sun.portal.wireless.htmlconversion.processors.*;


/**
 * Singleton class holding a registry mapping TagProcessor implementations to the
 * corresponding HTML tag.
 * 
 * @author ashwin.mathew@sun.com
 */
public class TagProcessorRegistry 
{
    
    private static TagProcessorRegistry instance = new TagProcessorRegistry();
    
    private HashMap processorMap = new HashMap();
    

  /**
   * Private constructor for singleton, used to register all TagProcessor
   * implementations.
   */
  private TagProcessorRegistry() 
  {
      registerTagProcessor(new AmlTextTagProcessor());
      registerTagProcessor(new AmlDocumentTitleTagProcessor());
      registerTagProcessor(new AmlBrTagProcessor());
      registerTagProcessor(new AmlListTagProcessor());
      registerTagProcessor(new AmlOrderedListTagProcessor());
      registerTagProcessor(new AmlListItemTagProcessor());
      registerTagProcessor(new AmlDocumentTagProcessor());
      registerTagProcessor(new AmlPageTagProcessor());
      registerTagProcessor(new AmlLinkTagProcessor());
      registerTagProcessor(new AmlFormTagProcessor());
      registerTagProcessor(new HtmlInputTagProcessor());
      registerTagProcessor(new AmlInputTagProcessor());
      registerTagProcessor(new AmlFormSubmitTagProcessor());
      registerTagProcessor(new AmlFormResetTagProcessor());
      registerTagProcessor(new AmlCheckBoxTagProcessor());
      registerTagProcessor(new AmlChoiceTagProcessor());
      registerTagProcessor(new AmlOptionTagProcessor());
      registerTagProcessor(new HtmlRadioTagProcessor());
      registerTagProcessor(new AmlTextAreaTagProcessor());
      registerTagProcessor(new HtmlButtonTagProcessor());
      registerTagProcessor(new AmlTableTagProcessor());
      registerTagProcessor(new AmlTableRowTagProcessor());
      registerTagProcessor(new AmlTableColTagProcessor());
        registerTagProcessor(new HtmlIgnoreTagProcessor());
        registerTagProcessor(new AmlImageTagProcessor());
        registerTagProcessor(new HtmlBaseTagProcessor());
  }

  
  public static TagProcessorRegistry getInstance()
  {
      return instance;
  }
  
  
  /**
   * Returns the processor for the named tag - it's assumed that all tag names
   * are lower case.
   * @param tag
   * @return
   */
  public TagProcessor getProcessor(String tag)
  {
      return (TagProcessor) processorMap.get(tag);
  }
  
  
  /**
   * Registers a tag processor, mapping it to all the tags in it's
   * supported tags list.
   * @param processor
   */
  public void registerTagProcessor(TagProcessor processor)
  {
      // First add all the HTML tags
      String[] supportedTags = processor.getSupportedTags();
      
      for (int i=0; i<supportedTags.length; i++)
      {
          processorMap.put(supportedTags[i], processor);
      }
      
      // Also add the AML tag name
      String amlTag = processor.getAmlTag();
      if (amlTag != null)
      {
          processorMap.put(amlTag, processor);
      }
  }
  
}