/*

  * POIColor.java

  *

  * Created on April 11, 2005, 4:32 PM

  */

 package org.wiztools.xml2spreadsheet.poiimpl;

 import org.wiztools.xml2spreadsheet.exception.OperationException;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.HashMap;

 import java.util.Map;

 import java.util.Set;

 import org.apache.poi.hssf.util.HSSFColor;

 /**

  *

  * @author subhash

  */

 public final class POIColor {

     private static POIColor poiColor;

     private Map<String, Integer> colorMap;

     private Collection<String> colorNames;

     /** Creates a new instance of POIColor */

     private POIColor() {

     }

     public static synchronized POIColor getInstance(){

         if(poiColor == null){

             poiColor = new POIColor();

             poiColor.populateColor();

         }

         return poiColor;

     }

     private void populateColor(){

         colorMap = new HashMap<String, Integer>();

         colorNames = new ArrayList<String>();

         Map m = HSSFColor.getIndexHash();

         Set s = m.keySet();

         for(Object o: s){

             String className = m.get(o).getClass().getName();

             // Example className: org.apache.poi.hssf.util.HSSFColor$DARK_RED

             // For the above example, the color name would be: dark_red

             className = className.split("\\$")[1].toLowerCase();

             colorNames.add(className);

             colorMap.put(className ,(Integer)o);

         }

     }

     public Collection<String> getSupportedColors(){

         return colorNames;

     }

     public short getColor(final String str) throws OperationException{

         Integer i = colorMap.get(str);

         if(i == null){

             throw new OperationException("Color value not found: "+str);

         }

         return (short)i.intValue();

     }

 }