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Support passing callbacks from renderer to browser.

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This commit is contained in:
Cheng Zhao 2013-04-29 18:24:37 +08:00
parent 948e50285d
commit f1e15b49a9
2 changed files with 62 additions and 3 deletions
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42
renderer/api/lib/remote.coffee
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@ -1,6 +1,33 @@
ipc = require 'ipc'
IDWeakMap = require 'id_weak_map'
v8_util = process.atomBinding 'v8_util'
class CallbacksRegistry
constructor: ->
@referencesMap = {}
@weakMap = new IDWeakMap
get: (id) -> @weakMap.get id
remove: (id) -> delete @referencesMap[id]
add: (callback) ->
id = @weakMap.add callback
@referencesMap[id] = callback
id
# Translate arguments object into a list of meta data.
# Unlike the Meta class in browser, this function only create delegate object
# for functions, other types of value are transfered after serialization.
callbacksRegistry = new CallbacksRegistry
argumentsToMetaList = (args) ->
metas = []
for arg in args
if typeof arg is 'function'
metas.push type: 'function', id: callbacksRegistry.add(arg)
else
metas.push type: 'value', value: arg
metas
# Transform the description of value into a value or delegate object.
metaToValue = (meta) ->
switch meta.type
@ -15,7 +42,7 @@ metaToValue = (meta) ->
constructor: ->
if @constructor == RemoteFunction
# Constructor call.
obj = ipc.sendChannelSync 'ATOM_INTERNAL_CONSTRUCTOR', meta.id, Array::slice.call(arguments)
obj = ipc.sendChannelSync 'ATOM_INTERNAL_CONSTRUCTOR', meta.id, argumentsToMetaList(arguments)
# Returning object in constructor will replace constructed object
# with the returned object.
@ -23,7 +50,7 @@ metaToValue = (meta) ->
return metaToValue obj
else
# Function call.
ret = ipc.sendChannelSync 'ATOM_INTERNAL_FUNCTION_CALL', meta.id, Array::slice.call(arguments)
ret = ipc.sendChannelSync 'ATOM_INTERNAL_FUNCTION_CALL', meta.id, argumentsToMetaList(arguments)
return metaToValue ret
else
ret = v8_util.createObjectWithName meta.name
@ -34,7 +61,7 @@ metaToValue = (meta) ->
if member.type is 'function'
ret[member.name] = ->
# Call member function.
ret = ipc.sendChannelSync 'ATOM_INTERNAL_MEMBER_CALL', meta.id, member.name, Array::slice.call(arguments)
ret = ipc.sendChannelSync 'ATOM_INTERNAL_MEMBER_CALL', meta.id, member.name, argumentsToMetaList(arguments)
metaToValue ret
else
ret.__defineSetter__ member.name, (value) ->
@ -53,6 +80,15 @@ metaToValue = (meta) ->
ret
# Browser calls a callback in renderer.
ipc.on 'ATOM_INTERNAL_FUNCTION_CALL', (callbackId, args) ->
callback = callbacksRegistry.get callbackId
callback.apply global, metaToValue(args)
# Browser releases a callback in renderer.
ipc.on 'ATOM_INTERNAL_DEREFERENCE', (callbackId) ->
callbacksRegistry.remove callbackId
# Get remote module.
exports.require = (module) ->
meta = ipc.sendChannelSync 'ATOM_INTERNAL_REQUIRE', module