  
          self._predictor = Predict(queue_manager.get_queue("preview_predict_in"),
                                    sample_size,
                                    arguments)
          self._display.set_centering(self._predictor.centering)
          self.generate()
  
          logger.debug("Initialized %s", self.__class__.__name__)
  
      @property
 
</s> remove                               args=(self._trigger,
                                    self._shutdown,
                                    self._queue_patch_in,
                                    self._samples,
                                    tk_vars),
 </s> add                               args=(self._queue_patch_in,
                                    self._app.dispatcher.needs_patch,
                                    app._samples), </s> remove     @property
    def trigger(self) -> Event:
        """ :class:`threading.Event`: The trigger to indicate that a patching run should
        commence. """
        return self._trigger

 </s> add  </s> remove     def _available_masks(self) -> List[str]:
        """ list: The mask names that are available for every face in the alignments file """
        retval = [key
                  for key, val in self._samples.alignments.mask_summary.items()
                  if val == self._samples.alignments.faces_count]
        return retval
 </s> add     def config_tools(self) -> "ConfigTools":
        """ :class:`ConfigTools`: The object responsible for parsing configuration options and
        updating to/from the GUI """
        return self._config_tools

    @property
    def dispatcher(self) -> "Dispatcher":
        """ :class:`Dispatcher`: The object responsible for triggering events and variables and
        handling global GUI state """
        return self._dispatcher

    @property
    def display(self) -> FacesDisplay:
        """ :class:`~tools.preview.viewer.FacesDisplay`: The object that holds the sample,
        converted and patched faces """
        return self._display

    @property
    def lock(self) -> Lock:
        """ :class:`threading.Lock`: The threading lock object for the Preview GUI """
        return self._lock

    @property
    def progress_bar(self) -> "BusyProgressBar":
        """ :class:`~tools.preview.control_panels.BusyProgressBar`: The progress bar that indicates
        a swap/patch thread is running """
        assert self._cli_frame is not None
        return self._cli_frame.busy_progress_bar

    def update_display(self):
        """ Update the images in the canvas and redraw """
        if not hasattr(self, "_image_canvas"):  # On first call object not yet created
            return
        assert self._image_canvas is not None
        self._image_canvas.reload() </s> remove 
        self._tk_vars: Dict[Literal["refresh", "busy"],
                            tk.BooleanVar] = dict(refresh=tk.BooleanVar(), busy=tk.BooleanVar())
        for val in self._tk_vars.values():
            val.set(False)
        self._display = FacesDisplay(256, 64, self._tk_vars)

        trigger_patch = Event()
        self._samples = Samples(arguments, 5, self._display, self._lock, trigger_patch)
        self._patch = Patch(arguments,
                            self._available_masks,
                            self._samples,
                            self._display,
                            self._lock,
                            trigger_patch,
                            self._config_tools,
                            self._tk_vars)
 </s> add         self._dispatcher = Dispatcher(self)
        self._display = FacesDisplay(self, 256, 64)
        self._samples = Samples(self, arguments, 5)
        self._patch = Patch(self, arguments)
        self._app._display.set_centering(self._predictor.centering)
  
          self._predictor = Predict(queue_manager.get_queue("preview_predict_in"),
                                    sample_size,
                                    arguments)
        self._app._display.set_centering(self._predictor.centering)
          self.generate()
  
          logger.debug("Initialized %s", self.__class__.__name__)
  
      @property
keep keep keep keep replace keep keep keep keep keep
 bugfix:
    - preview tool - Prevent tkinter variables from exiting main thread
refactor:
    - preview tool - Split module to smaller sub-modules + docs, locales
Typing:
    - tools.preview.cli
Unit test:
    - tools.preview.viewer 
tools/preview/preview.py