mirror of
https://github.com/atom/atom.git
synced 2026-04-06 03:02:13 -04:00
76332c76bd
* Move src/app to src/ * Move src/stdlib to src/ * Remove src/app and src/stdlib from NODE_PATH
36 lines
1.2 KiB
CoffeeScript
36 lines
1.2 KiB
CoffeeScript
_ = require 'underscore'
|
|
|
|
module.exports =
|
|
subscribeWith: (eventEmitter, methodName, args) ->
|
|
eventEmitter[methodName](args...)
|
|
|
|
@subscriptions ?= []
|
|
@subscriptionsByObject ?= new WeakMap
|
|
@subscriptionsByObject.set(eventEmitter, []) unless @subscriptionsByObject.has(eventEmitter)
|
|
|
|
eventName = _.first(args)
|
|
callback = _.last(args)
|
|
subscription = cancel: ->
|
|
# node's EventEmitter doesn't have 'off' method.
|
|
removeListener = eventEmitter.off ? eventEmitter.removeListener
|
|
removeListener.call eventEmitter, eventName, callback
|
|
@subscriptions.push(subscription)
|
|
@subscriptionsByObject.get(eventEmitter).push(subscription)
|
|
|
|
subscribe: (eventEmitter, args...) ->
|
|
@subscribeWith(eventEmitter, 'on', args)
|
|
|
|
subscribeToCommand: (eventEmitter, args...) ->
|
|
@subscribeWith(eventEmitter, 'command', args)
|
|
|
|
unsubscribe: (object) ->
|
|
if object?
|
|
for subscription in @subscriptionsByObject?.get(object) ? []
|
|
subscription.cancel()
|
|
_.remove(@subscriptions, subscription)
|
|
@subscriptionsByObject?.delete(object)
|
|
else
|
|
subscription.cancel() for subscription in @subscriptions ? []
|
|
@subscriptions = null
|
|
@subscriptionsByObject = null
|