class Mouse {
 
 static String _customCursor = MouseCursor.AUTO;
 static bool _isCursorHidden = false;
 
 static Sprite _dragSprite = null;
 static Point _dragSpriteCenter = null;
 static Rectangle _dragSpriteBounds = null;
 
 static StreamController<String> _mouseCursorChangedEvent = new StreamController<String>();
 static Stream<String> _onMouseCursorChanged = _mouseCursorChangedEvent.stream.asBroadcastStream();

 //-------------------------------------------------------------------------------------------------
 //-------------------------------------------------------------------------------------------------

 static String get cursor => _customCursor;

 static void set cursor(String value) {
   _customCursor = value;
   _mouseCursorChangedEvent.add("cursor");
 }

 //-------------------------------------------------------------------------------------------------

 static void hide() {
   _isCursorHidden = true;
   _mouseCursorChangedEvent.add("hide");
 }

 static void show() {
   _isCursorHidden = false;
   _mouseCursorChangedEvent.add("show");
 }

 //-------------------------------------------------------------------------------------------------

 static String _getCssStyle(String mouseCursor) {
   
   String cursor = mouseCursor;
   String style = "auto";

   if (_customCursor != MouseCursor.AUTO) {
     cursor = _customCursor;
   }
   
   switch(cursor) {
     case MouseCursor.AUTO: style = "auto"; break;
     case MouseCursor.ARROW: style = "default"; break;
     case MouseCursor.BUTTON: style = "pointer"; break;
     case MouseCursor.HAND: style = "move"; break;
     case MouseCursor.IBEAM: style = "text"; break;
     case MouseCursor.WAIT: style = "wait"; break;
   }

   // The cursor style "none" is not standardized, but works quite well.

   if (_isCursorHidden) {
     style = "none";
   }
   
   return style;
 }

}