116 lines
3.9 KiB
CoffeeScript
116 lines
3.9 KiB
CoffeeScript
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
|
|
when 'error' then throw new Error(meta.value)
|
|
when 'value' then meta.value
|
|
when 'array' then (metaToValue(el) for el in meta.members)
|
|
else
|
|
if meta.type is 'function'
|
|
# A shadow class to represent the remote function object.
|
|
ret =
|
|
class RemoteFunction
|
|
constructor: ->
|
|
if @constructor == RemoteFunction
|
|
# Constructor call.
|
|
obj = ipc.sendChannelSync 'ATOM_BROWSER_CONSTRUCTOR', meta.id, argumentsToMetaList(arguments)
|
|
|
|
# Returning object in constructor will replace constructed object
|
|
# with the returned object.
|
|
# http://stackoverflow.com/questions/1978049/what-values-can-a-constructor-return-to-avoid-returning-this
|
|
return metaToValue obj
|
|
else
|
|
# Function call.
|
|
ret = ipc.sendChannelSync 'ATOM_BROWSER_FUNCTION_CALL', meta.id, argumentsToMetaList(arguments)
|
|
return metaToValue ret
|
|
else
|
|
ret = v8_util.createObjectWithName meta.name
|
|
|
|
# Polulate delegate members.
|
|
for member in meta.members
|
|
do (member) ->
|
|
if member.type is 'function'
|
|
ret[member.name] = ->
|
|
# Call member function.
|
|
ret = ipc.sendChannelSync 'ATOM_BROWSER_MEMBER_CALL', meta.id, member.name, argumentsToMetaList(arguments)
|
|
metaToValue ret
|
|
else
|
|
ret.__defineSetter__ member.name, (value) ->
|
|
# Set member data.
|
|
ipc.sendChannelSync 'ATOM_BROWSER_MEMBER_SET', meta.id, member.name, value
|
|
|
|
ret.__defineGetter__ member.name, ->
|
|
# Get member data.
|
|
ret = ipc.sendChannelSync 'ATOM_BROWSER_MEMBER_GET', meta.id, member.name
|
|
metaToValue ret
|
|
|
|
# Track delegate object's life time, and tell the browser to clean up
|
|
# when the object is GCed.
|
|
v8_util.setDestructor ret, ->
|
|
ipc.sendChannel 'ATOM_BROWSER_DEREFERENCE', meta.storeId
|
|
|
|
ret
|
|
|
|
# Browser calls a callback in renderer.
|
|
ipc.on 'ATOM_RENDERER_FUNCTION_CALL', (callbackId, args) ->
|
|
callback = callbacksRegistry.get callbackId
|
|
callback.apply global, metaToValue(args)
|
|
|
|
# Browser releases a callback in renderer.
|
|
ipc.on 'ATOM_RENDERER_DEREFERENCE', (callbackId) ->
|
|
callbacksRegistry.remove callbackId
|
|
|
|
# Get remote module.
|
|
exports.require = (module) ->
|
|
meta = ipc.sendChannelSync 'ATOM_BROWSER_REQUIRE', module
|
|
metaToValue meta
|
|
|
|
# Get object with specified id.
|
|
exports.getObject = (id) ->
|
|
meta = ipc.sendChannelSync 'ATOM_BROWSER_REFERENCE', id
|
|
metaToValue meta
|
|
|
|
# Get current window object.
|
|
exports.getCurrentWindow = ->
|
|
meta = ipc.sendChannelSync 'ATOM_BROWSER_CURRENT_WINDOW'
|
|
metaToValue meta
|
|
|
|
# Get a global object in browser.
|
|
exports.getGlobal = (name) ->
|
|
meta = ipc.sendChannelSync 'ATOM_BROWSER_GLOBAL', name
|
|
metaToValue meta
|
|
|
|
# Get the process object in browser.
|
|
processCache = null
|
|
exports.__defineGetter__ 'process', ->
|
|
processCache = exports.getGlobal('process') unless processCache?
|
|
processCache
|