public void clearActiveLineRange(){
  if (activeLineRangeStart != -1 || activeLineRangeEnd != -1) {
    activeLineRangeStart=activeLineRangeEnd=-1;
    repaint();
  }
}

public void clearActiveLineRange ( ) { if ( activeLineRangeStart != - 1 || activeLineRangeEnd != - 1 ) { activeLineRangeStart = activeLineRangeEnd = - 1 ; repaint ( ) ; } }
clears the active line range .
