1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // Custom binding for the extension API.
7 var binding = require('binding').Binding.create('extension');
9 var messaging = require('messaging');
10 var runtimeNatives = requireNative('runtime');
11 var GetExtensionViews = runtimeNatives.GetExtensionViews;
12 var OpenChannelToExtension = runtimeNatives.OpenChannelToExtension;
13 var OpenChannelToNativeApp = runtimeNatives.OpenChannelToNativeApp;
14 var chrome = requireNative('chrome').GetChrome();
16 var inIncognitoContext = requireNative('process').InIncognitoContext();
17 var sendRequestIsDisabled = requireNative('process').IsSendRequestDisabled();
18 var contextType = requireNative('process').GetContextType();
19 var manifestVersion = requireNative('process').GetManifestVersion();
21 // This should match chrome.windows.WINDOW_ID_NONE.
23 // We can't use chrome.windows.WINDOW_ID_NONE directly because the
24 // chrome.windows API won't exist unless this extension has permission for it;
25 // which may not be the case.
26 var WINDOW_ID_NONE = -1;
28 binding.registerCustomHook(function(bindingsAPI, extensionId) {
29 var extension = bindingsAPI.compiledApi;
30 if (manifestVersion < 2) {
31 chrome.self = extension;
32 extension.inIncognitoTab = inIncognitoContext;
34 extension.inIncognitoContext = inIncognitoContext;
36 var apiFunctions = bindingsAPI.apiFunctions;
38 apiFunctions.setHandleRequest('getViews', function(properties) {
39 var windowId = WINDOW_ID_NONE;
42 if (properties.type != null) {
43 type = properties.type;
45 if (properties.windowId != null) {
46 windowId = properties.windowId;
49 return GetExtensionViews(windowId, type);
52 apiFunctions.setHandleRequest('getBackgroundPage', function() {
53 return GetExtensionViews(-1, 'BACKGROUND')[0] || null;
56 apiFunctions.setHandleRequest('getExtensionTabs', function(windowId) {
58 windowId = WINDOW_ID_NONE;
59 return GetExtensionViews(windowId, 'TAB');
62 apiFunctions.setHandleRequest('getURL', function(path) {
64 if (!path.length || path[0] != '/')
66 return 'chrome-extension://' + extensionId + path;
69 // Alias several messaging deprecated APIs to their runtime counterparts.
74 'connect', 'sendMessage', 'connectNative', 'sendNativeMessage',
76 'onConnect', 'onConnectExternal', 'onMessage', 'onMessageExternal'
78 $Array.forEach(mayNeedAlias, function(alias) {
79 // Checking existence isn't enough since some functions are disabled via
80 // getters that throw exceptions. Assume that any getter is such a function.
82 $Object.hasOwnProperty(chrome.runtime, alias) &&
83 chrome.runtime.__lookupGetter__(alias) === undefined) {
84 extension[alias] = chrome.runtime[alias];
88 apiFunctions.setUpdateArgumentsPreValidate('sendRequest',
89 $Function.bind(messaging.sendMessageUpdateArguments,
90 null, 'sendRequest', false /* hasOptionsArgument */));
92 apiFunctions.setHandleRequest('sendRequest',
93 function(targetId, request, responseCallback) {
94 if (sendRequestIsDisabled)
95 throw new Error(sendRequestIsDisabled);
96 var port = chrome.runtime.connect(targetId || extensionId,
97 {name: messaging.kRequestChannel});
98 messaging.sendMessageImpl(port, request, responseCallback);
101 if (sendRequestIsDisabled) {
102 extension.onRequest.addListener = function() {
103 throw new Error(sendRequestIsDisabled);
105 if (contextType == 'BLESSED_EXTENSION') {
106 extension.onRequestExternal.addListener = function() {
107 throw new Error(sendRequestIsDisabled);
113 exports.binding = binding.generate();