package vishnu.testvis.visual;
 /** This class is maps the display array of keywords onto the stored.
  *  array
  *  @author Matthew Carey</a>
  */
public class MapKeyWords
{
   /** array map for display to stored */
   protected int nodesToWord[] = null;
   /** array map for stored to display */
   protected int wordsToNodes[] = null;
   /**
   * map for display to stored
   * @param display index
   * @return stored index
   */
   public int mapNodesToWords(int index)
   {
        return nodesToWord[index];
   }
   /**
   * map for stored to display
   * @param stored index
   * @return the display index
   */
   public int mapWordsToNodes(int index)
   {
        return wordsToNodes[index];
   }
   /**
   * constructor
   * @param keywordarray instance containing list of key words and states
   */
   public MapKeyWords(KeyWordArray keyWordArray)
   {
        int c, n=0;
        nodesToWord = null;
        wordsToNodes = null;
        nodesToWord = new int [keyWordArray.getNumEnabled()];
        wordsToNodes = new int [keyWordArray.getNumWords()];
        int totalKeyWord=keyWordArray.getNumWords();
        for (c=0;c < totalKeyWord; c++)
        {
             if (keyWordArray.getState(c))
             {
                wordsToNodes[c]=n;
                nodesToWord[n]=c;
                n++;
             }
             else
                wordsToNodes[c]=-1;
        }
   }
   /**
   * re-Map the KeyWords with a new vector
   * @param array the new vector
   * @param keywordarray instance containing list of key words and states
   */
   public void reMapKeyWords(int array[],KeyWordArray keyWordArray)
   {
        if (array.length != keyWordArray.getNumEnabled())
            return;
        int c;
        for (c=0;c<array.length;c++)
        {
            if (!keyWordArray.getState(array[c]))
               return;
        }

        for (c=0;c<array.length;c++)
        {
                wordsToNodes[array[c]]=c;
                nodesToWord[c]=array[c];
        }
   }


}