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- # This is a simple port of microevent.js to Coffeescript. I've changed the
- # function names to be consistent with node.js EventEmitter.
- #
- # microevent.js is copyright Jerome Etienne, and licensed under the MIT license:
- # https://github.com/jeromeetienne/microevent.js
- nextTick = if WEB? then (fn) -> setTimeout fn, 0 else process['nextTick']
- class MicroEvent
- on: (event, fct) ->
- @_events ||= {}
- @_events[event] ||= []
- @_events[event].push(fct)
- this
- removeListener: (event, fct) ->
- @_events ||= {}
- listeners = (@_events[event] ||= [])
-
- # Sadly, there's no IE8- support for indexOf.
- i = 0
- while i < listeners.length
- listeners[i] = undefined if listeners[i] == fct
- i++
- nextTick => @_events[event] = (x for x in @_events[event] when x)
- this
- emit: (event, args...) ->
- return this unless @_events?[event]
- fn.apply this, args for fn in @_events[event] when fn
- this
- # mixin will delegate all MicroEvent.js function in the destination object
- MicroEvent.mixin = (obj) ->
- proto = obj.prototype || obj
- # Damn closure compiler :/
- proto.on = MicroEvent.prototype.on
- proto.removeListener = MicroEvent.prototype.removeListener
- proto.emit = MicroEvent.prototype.emit
- obj
- module.exports = MicroEvent unless WEB?
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