code: def __initialize_ui(self):
          
  
          LOGGER.debug("> Initializing Application toolBar!")
  
          self.setIconSize(QSize(UiConstants.default_toolbar_icon_size, UiConstants.default_toolbar_icon_size))
          self.setAllowedAreas(Qt.TopToolBarArea)
          self.setFloatable(False)
          self.setMovable(False)
          self.set_layout_default_geometry()
  
          self.setObjectName("toolBar")
          self.setWindowTitle("{0} - toolBar".format(Constants.application_name))
  
          self.set_toolbar_children_widgets()
  
          # Signals / Slots.
          self.__container.layouts_manager.layout_stored.connect(self.__layouts_manager__layout_stored)
          self.__container.layouts_manager.layout_restored.connect(self.__layouts_manager__layout_restored)
docs: Initializes the Widget ui.