class _Event(object):
def __init__(self, loop, callback, timeout, starttime):
self.loop = loop
self.callback = WeakMethod(callback)
self.timeout = timeout
self._last_dt = starttime
self._dt = 0.
def do(self, dt):
if self.callback.is_dead():
return False
self.callback()(dt)
def tick(self, curtime):
# timeout happen ?
if curtime - self._last_dt < self.timeout:
return True
# calculate current timediff for this event
self._dt = curtime - self._last_dt
self._last_dt = curtime
# call the callback
if self.callback.is_dead():
return False
ret = self.callback()(self._dt)
# if it's a once event, don't care about the result
# just remove the event
if not self.loop:
return False
# if user return an explicit false,
# remove the event
if ret == False:
return False
return True
def set_handler(self, name, handler):
'''Attach a single event handler.
:Parameters:
`name` : str
Name of the event type to attach to.
`handler` : callable
Event handler to attach.
'''
# Create event stack if necessary
if self._event_stack is None:
self._event_stack = [{}]
self._event_stack[0][name] = WeakMethod(handler)
def __init__(self, loop, callback, timeout, starttime):
self.loop = loop
self.callback = WeakMethod(callback)
self.timeout = timeout
self._last_dt = starttime
self._dt = 0.
