electron/atom/browser/api/lib/web-contents.coffee

110 lines
3.7 KiB
CoffeeScript

EventEmitter = require('events').EventEmitter
NavigationController = require './navigation-controller'
binding = process.atomBinding 'web_contents'
ipc = require 'ipc'
nextId = 0
getNextId = -> ++nextId
wrapWebContents = (webContents) ->
# webContents is an EventEmitter.
webContents.__proto__ = EventEmitter.prototype
# WebContents::send(channel, args..)
webContents.send = (channel, args...) ->
@_send channel, [args...]
# Make sure webContents.executeJavaScript would run the code only when the
# web contents has been loaded.
webContents.loaded = false
webContents.once 'did-finish-load', -> @loaded = true
webContents.executeJavaScript = (code) ->
if @loaded
@_executeJavaScript code
else
webContents.once 'did-finish-load', @_executeJavaScript.bind(this, code)
# The processId and routingId and identify a webContents.
webContents.getId = -> "#{@getProcessId()}-#{@getRoutingId()}"
webContents.equal = (other) -> @getId() is other.getId()
# The navigation controller.
controller = new NavigationController(webContents)
for name, method of NavigationController.prototype when method instanceof Function
do (name, method) ->
webContents[name] = -> method.apply controller, arguments
# Translate |disposition| to string for 'new-window' event.
webContents.on '-new-window', (args..., disposition) ->
disposition =
switch disposition
when 2 then 'default'
when 4 then 'foreground-tab'
when 5 then 'background-tab'
when 6, 7 then 'new-window'
else 'other'
@emit 'new-window', args..., disposition
# Tell the rpc server that a render view has been deleted and we need to
# release all objects owned by it.
webContents.on 'render-view-deleted', (event, processId, routingId) ->
process.emit 'ATOM_BROWSER_RELEASE_RENDER_VIEW', "#{processId}-#{routingId}"
# Dispatch IPC messages to the ipc module.
webContents.on 'ipc-message', (event, packed) ->
[channel, args...] = packed
Object.defineProperty event, 'sender', value: webContents
ipc.emit channel, event, args...
webContents.on 'ipc-message-sync', (event, packed) ->
[channel, args...] = packed
Object.defineProperty event, 'returnValue', set: (value) -> event.sendReply JSON.stringify(value)
Object.defineProperty event, 'sender', value: webContents
ipc.emit channel, event, args...
webContents.printToPDF = (options, callback) ->
printingSetting =
pageRage:[],
mediaSize:
height_microns:297000,
is_default:true,
name:"ISO_A4",
width_microns:210000,
custom_display_name:"A4",
landscape:false,
color:2,
headerFooterEnabled:false,
marginsType:0,
isFirstRequest:false,
requestID: getNextId(),
previewModifiable:true,
printToPDF:true,
printWithCloudPrint:false,
printWithPrivet:false,
printWithExtension:false,
deviceName:"Save as PDF",
generateDraftData:true,
fitToPageEnabled:false,
duplex:0,
copies:1,
collate:true,
shouldPrintBackgrounds:false,
shouldPrintSelectionOnly:false
if options.landscape
printingSetting.landscape = options.landscape
if options.marginsType
printingSetting.marginsType = options.marginsType
if options.printSelectionOnly
printingSetting.shouldPrintSelectionOnly = options.printSelectionOnly
if options.printBackgrounds
printingSetting.shouldPrintBackgrounds = options.printBackground
webContents._printToPDF printingSetting, callback
webContents
binding._setWrapWebContents wrapWebContents
process.once 'exit', binding._clearWrapWebContents
module.exports.create = (options={}) ->
binding.create(options)