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33 lines
808 B
CoffeeScript
33 lines
808 B
CoffeeScript
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define [], () ->
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class EventEmitter
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on: (event, callback) ->
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@events ||= {}
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[event, namespace] = event.split(".")
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@events[event] ||= []
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@events[event].push {
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callback: callback
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namespace: namespace
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}
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off: (event) ->
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@events ||= {}
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if event?
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[event, namespace] = event.split(".")
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if !namespace?
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# Clear all listeners for event
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delete @events[event]
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else
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# Clear only namespaced listeners
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remaining_events = []
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for callback in @events[event] or []
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if callback.namespace != namespace
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remaining_events.push callback
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@events[event] = remaining_events
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else
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# Remove all listeners
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@events = {}
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trigger: (event, args...) ->
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@events ||= {}
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for callback in @events[event] or []
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callback.callback(args...)
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