private boolean showWhitespaceAtOffset(int offset, CaretDataInView caretData) {
      if (!myWhitespaceShown) return false;
      if (offset < currentLeadingEdge ? myLeadingWhitespaceShown :
          offset >= currentTrailingEdge ? myTrailingWhitespaceShown :
          myInnerWhitespaceShown) {
        return true;
      } else {
        return mySelectionWhitespaceShown && caretData != null && caretData.isOffsetInSelection(offset);
      }
    }
private boolean showWhitespaceAtOffset(int offset, CaretDataInView caretData)