mTracker=aTracker;
mShell=aShell;
  void SetData(nsIFocusTracker *aTracker,                nscoord aDesiredX,                nsSelectionAmount aAmount,               nsDirection aDirection,               PRInt32 aStartOffset,                PRBool aEatingWS,               PRBool aPreferLeft,               PRBool aJumpLines,               PRBool aScrollViewStop,               PRBool aIsKeyboardSelect)      {       mTracker=aTracker;       mDesiredX=aDesiredX;       mAmount=aAmount;       mDirection=aDirection;       mStartOffset=aStartOffset;       mEatingWS=aEatingWS;       mPreferLeft=aPreferLeft;       mJumpLines = aJumpLines;       mScrollViewStop = aScrollViewStop;       mIsKeyboardSelect = aIsKeyboardSelect;      }