              self.start_busy_indicator()
          else:
              self.stop_busy_indicator()
  
      def stop_busy_indicator(self):
          """ Stop and hide progress bar """
          logger.debug("Stopping busy indicator")
          self.busy_indicator.stop()
          self.busy_indicator.pack_forget()
  
 
</s> remove             self.stop_busy_indicator()
 </s> add             self._stop_busy_indicator() </s> remove         self.busy_indicator.stop()
        self.busy_indicator.pack_forget()
 </s> add         self._busy_indicator.stop()
        self._busy_indicator.pack_forget() </s> remove         if self.busy_tkvar.get():
            self.start_busy_indicator()
 </s> add         if self._busy_tkvar.get():
            self._start_busy_indicator() </s> remove     def start_busy_indicator(self):
 </s> add     def _start_busy_indicator(self): </s> remove     def busy_indicator_trace(self, *args):
        """ Show or hide busy indicator """
 </s> add     def _busy_indicator_trace(self, *args):
        """ Show or hide busy indicator based on whether the preview is updating.

        Parameters
        ----------
        args: unused
            Required for tkinter event, but unused
        """
    def _stop_busy_indicator(self):
              self.start_busy_indicator()
          else:
              self.stop_busy_indicator()
  
    def _stop_busy_indicator(self):
          """ Stop and hide progress bar """
          logger.debug("Stopping busy indicator")
          self.busy_indicator.stop()
          self.busy_indicator.pack_forget()
  
keep keep keep keep replace keep keep keep keep keep
 Smart Masks to Convert (#957)

- scripts.convert - Use Smart Masks for Convert
    * Make on-the-fly conversion an explicit option

- Move BlurMask to lib.faces_detect

- tools.preview - Fix for smart masks
    * Subclass from tk.Tk
    * Options to lib.gui.control_helper
    *variable cleanup

- lib.logger - Demote more tensorflow deprecation messages

- Documentation:
    * lib.faces_detect.BlurMask
    * plugins.convert.mask
    * lib.convert
    * scripts.convert
    * scripts.fsmedia
    * tools.preview 
tools/preview.py