844fccc177
It's very possible that the callbacks got GCed before the render view is closed (like page getting refreshed), so we should not let browser call the wrong callback, instead we should throw error whenever a callback is not found.
25 lines
645 B
CoffeeScript
25 lines
645 B
CoffeeScript
module.exports =
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class CallbacksRegistry
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constructor: ->
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@emptyFunc = -> throw new Error "Browser trying to call a non-exist callback
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in renderer, this usually happens when renderer code forgot to release
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a callback installed on objects in browser when renderer was going to be
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unloaded or released."
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@callbacks = {}
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add: (callback) ->
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id = Math.random().toString()
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@callbacks[id] = callback
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id
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get: (id) ->
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@callbacks[id] ? ->
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call: (id, args...) ->
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@get(id).call global, args...
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apply: (id, args...) ->
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@get(id).apply global, args...
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remove: (id) ->
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delete @callbacks[id]
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