'Show/Hides toolbars.'

@Slot()
def show_toolbars(self):

    value = (not self.toolbars_visible)
    CONF.set('main', 'toolbars_visible', value)
    if value:
        self.save_visible_toolbars()
    else:
        self.get_visible_toolbars()
    for toolbar in self.visible_toolbars:
        toolbar.toggleViewAction().setChecked(value)
        toolbar.setVisible(value)
    self.toolbars_visible = value
    self._update_show_toolbars_action()
