mirror of
https://github.com/overleaf/overleaf.git
synced 2024-11-14 20:40:17 -05:00
33 lines
808 B
CoffeeScript
33 lines
808 B
CoffeeScript
|
define [], () ->
|
||
|
|
class EventEmitter
|
||
|
|
on: (event, callback) ->
|
||
|
|
@events ||= {}
|
||
|
|
[event, namespace] = event.split(".")
|
||
|
|
@events[event] ||= []
|
||
|
|
@events[event].push {
|
||
|
|
callback: callback
|
||
|
|
namespace: namespace
|
||
|
|
}
|
||
|
|
|
||
|
|
off: (event) ->
|
||
|
|
@events ||= {}
|
||
|
|
if event?
|
||
|
|
[event, namespace] = event.split(".")
|
||
|
|
if !namespace?
|
||
|
|
# Clear all listeners for event
|
||
|
|
delete @events[event]
|
||
|
|
else
|
||
|
|
# Clear only namespaced listeners
|
||
|
|
remaining_events = []
|
||
|
|
for callback in @events[event] or []
|
||
|
|
if callback.namespace != namespace
|
||
|
|
remaining_events.push callback
|
||
|
|
@events[event] = remaining_events
|
||
|
|
else
|
||
|
|
# Remove all listeners
|
||
|
|
@events = {}
|
||
|
|
|
||
|
|
trigger: (event, args...) ->
|
||
|
|
@events ||= {}
|
||
|
|
for callback in @events[event] or []
|
||
|
|
callback.callback(args...)
|