本文整理汇总了Python中dispatcher.Dispatcher.cancel方法的典型用法代码示例。如果您正苦于以下问题：Python Dispatcher.cancel方法的具体用法？Python Dispatcher.cancel怎么用？Python Dispatcher.cancel使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类dispatcher.Dispatcher的用法示例。
在下文中一共展示了Dispatcher.cancel方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: __init__
# 需要导入模块: from dispatcher import Dispatcher [as 别名]
# 或者: from dispatcher.Dispatcher import cancel [as 别名]
#.........这里部分代码省略.........
Enforces optional state timeouts.
Can generate internal leave, enter, and timeout events.
"""
def __init__(self, obj, initial_state: str, state_timeouts: Dict[str,int]=None) -> None:
super(State, self).__init__()
self.log = logging.getLogger(self.__class__.__name__)
if not obj:
raise TypeError('This state does not have an owner object.')
self.obj = obj
if not initial_state:
raise TypeError('This state does not have an initial state.')
self.initial_state: str = initial_state
self.current_state: str = None
self.state_timeouts: Dict[str,int] = state_timeouts if state_timeouts else {}
self.state_timer = None
self.reset_state()
def reset_state(self) -> None:
"""
Set the current state to the initial state.
"""
if not self.initial_state:
raise TypeError('This state does not have an initial state.')
self.log.info('Resetting state to ' + str(self.initial_state) + '.')
self.current_state = self.initial_state
self.stop_state_timer()
def identify_state(self, event) -> str: #pylint: disable=unused-argument
"""
Return the current state as the state variable.
"""
return str(self.current_state)
def change_state(self, new_state: str, notify: bool=False) -> None:
"""
Transition to the new state and optionally notify listeners.
The state transition will also generate and process internal leave and enter events.
"""
if self.current_state is None:
raise Exception('This state does not have a current state.')
old_state = self.current_state
# Only execute block if the state is really changing.
if old_state != new_state:
# Stop state timer.
self.stop_state_timer()
# Leave pseudo-event.
Dispatcher().send(StateEvent(self.EVENT_LEAVE, new_state=new_state, old_state=old_state), self.obj, self.obj)
# Change state.
self.log.info('Changing state from %s to %s.' % (str(old_state), str(new_state)))
self.current_state = new_state
# Enter pseudo-event.
Dispatcher().send(StateEvent(self.EVENT_ENTER, new_state=new_state, old_state=old_state), self.obj, self.obj)
# Notify listeners.
if notify:
self.log.info('Notify listeners of the state change.')
Dispatcher().notify(StateEvent(self.EVENT_STATE_CHANGE, new_state=new_state, old_state=old_state), self.obj)
# Start state timer.
self.start_state_timer()
def start_state_timer(self) -> None:
"""
If the current state is configured with a state timeout, then start the state timer.
"""
state_timeout = self.state_timeouts.get(self.current_state, None)
if state_timeout:
self.log.info('Start state timer with a timeout of ' + str(state_timeout) + '.')
if self.state_timer:
self.stop_state_timer()
self.state_timer = Dispatcher().schedule(state_timeout, StateEvent(self.EVENT_TIMEOUT, new_state=self.current_state), self.obj, self.obj)
def stop_state_timer(self) -> None:
"""
Stop the state timer if it is running.
"""
if self.state_timer:
self.log.info('Stop state timer.')
self.state_timer.cancel()
self.state_timer = None
def __str__(self):
return 'state: %s, timer: %s, timeouts: %s' % (str(self.current_state), str(self.state_timer), str(self.state_timeouts))