net.mograsim.preferences/src/net/mograsim/preferences/ColorManager.java

   1 package net.mograsim.preferences;
   2
   3 import org.eclipse.swt.graphics.Color;
   4
   5 public abstract class ColorManager
   6 {
   7         private static ColorManager currentManager;
   8
   9         public static void setColorManager(ColorManager manager)
  10         {
  11                 if (manager == null)
  12                         throw new NullPointerException();
  13                 currentManager = manager;
  14         }
  15
  16         public static ColorManager current()
  17         {
  18                 if (currentManager == null)
  19                         currentManager = new SimpleColorManager();
  20                 return currentManager;
  21         }
  22
  23         public abstract Color toColor(ColorDefinition col);
  24
  25         public void clearCache()
  26         {
  27                 // this method is intended to be overridden
  28         }
  29 }