115 lines
4.1 KiB
CoffeeScript
115 lines
4.1 KiB
CoffeeScript
ipc = require 'ipc'
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CallbacksRegistry = require 'callbacks-registry'
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v8Util = process.atomBinding 'v8_util'
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currentContextExist = true
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callbacksRegistry = new CallbacksRegistry
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# Convert the arguments object into an array of meta data.
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wrapArgs = (args) ->
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Array::slice.call(args).map (value) ->
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if value? and typeof value is 'object' and v8Util.getHiddenValue value, 'atomId'
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type: 'object', id: v8Util.getHiddenValue value, 'atomId'
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else if typeof value is 'function'
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type: 'function', id: callbacksRegistry.add(value)
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else
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type: 'value', value: value
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# Convert meta data from browser into real value.
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metaToValue = (meta) ->
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switch meta.type
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when 'value' then meta.value
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when 'array' then (metaToValue(el) for el in meta.members)
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when 'error'
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console.log meta.stack
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throw new Error(meta.message)
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else
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if meta.type is 'function'
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# A shadow class to represent the remote function object.
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ret =
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class RemoteFunction
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constructor: ->
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if @constructor == RemoteFunction
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# Constructor call.
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obj = ipc.sendChannelSync 'ATOM_BROWSER_CONSTRUCTOR', meta.id, wrapArgs(arguments)
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# Returning object in constructor will replace constructed object
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# with the returned object.
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# http://stackoverflow.com/questions/1978049/what-values-can-a-constructor-return-to-avoid-returning-this
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return metaToValue obj
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else
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# Function call.
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ret = ipc.sendChannelSync 'ATOM_BROWSER_FUNCTION_CALL', meta.id, wrapArgs(arguments)
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return metaToValue ret
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else
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ret = v8Util.createObjectWithName meta.name
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# Polulate delegate members.
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for member in meta.members
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do (member) ->
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if member.type is 'function'
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ret[member.name] = ->
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# Call member function.
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ret = ipc.sendChannelSync 'ATOM_BROWSER_MEMBER_CALL', meta.id, member.name, wrapArgs(arguments)
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metaToValue ret
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else
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ret.__defineSetter__ member.name, (value) ->
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# Set member data.
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ipc.sendChannelSync 'ATOM_BROWSER_MEMBER_SET', meta.id, member.name, value
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ret.__defineGetter__ member.name, ->
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# Get member data.
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ret = ipc.sendChannelSync 'ATOM_BROWSER_MEMBER_GET', meta.id, member.name
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metaToValue ret
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# Track delegate object's life time, and tell the browser to clean up
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# when the object is GCed.
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v8Util.setDestructor ret, ->
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return unless currentContextExist
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ipc.sendChannel 'ATOM_BROWSER_DEREFERENCE', meta.storeId
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# Remember object's id.
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v8Util.setHiddenValue ret, 'atomId', meta.id
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ret
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# Browser calls a callback in renderer.
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ipc.on 'ATOM_RENDERER_CALLBACK', (id, args) ->
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callbacksRegistry.apply id, metaToValue(args)
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# A callback in browser is released.
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ipc.on 'ATOM_RENDERER_RELEASE_CALLBACK', (id) ->
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callbacksRegistry.remove id
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# Release all resources of current render view when it's going to be unloaded.
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window.addEventListener 'unload', (event) ->
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currentContextExist = false
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ipc.sendChannelSync 'ATOM_BROWSER_RELEASE_RENDER_VIEW'
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# Get remote module.
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# (Just like node's require, the modules are cached permanently, note that this
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# is safe leak since the object is not expected to get freed in browser)
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moduleCache = {}
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exports.require = (module) ->
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return moduleCache[module] if moduleCache[module]?
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meta = ipc.sendChannelSync 'ATOM_BROWSER_REQUIRE', module
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moduleCache[module] = metaToValue meta
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# Get current window object.
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windowCache = null
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exports.getCurrentWindow = ->
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return windowCache if windowCache?
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meta = ipc.sendChannelSync 'ATOM_BROWSER_CURRENT_WINDOW'
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windowCache = metaToValue meta
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# Get a global object in browser.
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exports.getGlobal = (name) ->
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meta = ipc.sendChannelSync 'ATOM_BROWSER_GLOBAL', name
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metaToValue meta
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# Get the process object in browser.
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processCache = null
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exports.__defineGetter__ 'process', ->
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processCache = exports.getGlobal('process') unless processCache?
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processCache
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