def trigger(self, event):
"""Fire an event and return a list of results from all listeners.
Dispatches an event to all associated listeners and returns a
list of results. If the event is stopped (Event.stopped) then the
Result returned will only contain the response from the
first listener in the stack.
Args:
watson.events.types.Event event: The event to trigger
Returns:
Result: A list of all the responses
"""
if not isinstance(event, types.Event):
raise TypeError('event must be of type watson.events.type.Event')
results = collections.Result()
event.params['dispatcher'] = self
if event.name in self.events:
collection = self.events[event.name]
collection.sort_priority()
for (callback, priority, only_once) in collection[:]:
results.append(callback(event))
if only_once:
collection.remove(callback)
if event.stopped:
break
return results
def test_first_last(self):
collection = collections.Result()
collection.append('first')
collection.append('middle')
collection.append('last')
assert collection.first() == 'first'
assert collection.last() == 'last'
def test_first_last_not_exists(self):
collection = collections.Result()
assert collection.first() == None
assert collection.last() == None
def test_create_result(self):
collection = collections.Result()
collection.append('result')
assert repr(
collection) == '<watson.events.collections.Result results:1>'