focus.py 文件源码

def remove_from_focus(self, prev_focus=False):
        '''Remove widget from focusable_widgets or focus_grab_widgets list'''
        global current_focus, prev_focused_widgets, focus_grab_widgets
        global prev_focused_widgets
        if current_focus == self:
            remove_focus()
        if self.grab_focus and self in focus_grab_widgets:
            focus_grab_widgets.remove(self)
        elif self in focusable_widgets:
            focusable_widgets.remove(self)
        remlist = [
            i for i, x in enumerate(prev_focused_widgets) if x() == self]
        for x in reversed(remlist):
            del prev_focused_widgets[x]
        if prev_focus:
            Clock.schedule_once(set_focus_previous, 0)