EventQueue

Complexity

Total Complexity

6

Size/Duplication

Total Lines	20
Duplicated Lines	0 %

Importance

Changes	1
Bugs	0	Features	0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	add_listener()	0	6	1
A	remove_listener()	0	4	2
A	broadcast_event()	0	4	2
A	__init__()	0	2	1

# TODO - Add support for event filters so we dont have to rebroadcast everything
# to listeners that wont use most of it.

class EventQueue(object):
    def __init__(self):
        self.listeners = []

    def add_listener(self, listener):
        '''
        Add an event processing listener.
        An event listener is just a function that accepts 2 arguments.
        '''
        self.listeners.append(listener)

    def remove_listener(self, listener):
        ''' Remove specified event listener '''
        if listener not in self.listeners:
            self.listener.remove()

    def broadcast_event(self, event, args):
        ''' Send out an event to all event listeners '''
        for listener in self.listeners:
            listener(event, args)

Events = EventQueue()