1 // Copyright (c) 2012 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 runtime API.
7 var binding = require('binding').Binding.create('runtime');
9 var extensionNatives = requireNative('extension');
10 var messaging = require('messaging');
11 var runtimeNatives = requireNative('runtime');
12 var unloadEvent = require('unload_event');
13 var process = requireNative('process');
14 var forEach = require('utils').forEach;
16 var backgroundPage = window;
17 var backgroundRequire = require;
18 var contextType = process.GetContextType();
19 if (contextType == 'BLESSED_EXTENSION' ||
20 contextType == 'UNBLESSED_EXTENSION') {
21 var manifest = runtimeNatives.GetManifest();
22 if (manifest.app && manifest.app.background) {
23 // Get the background page if one exists. Otherwise, default to the current
25 backgroundPage = extensionNatives.GetExtensionViews(-1, 'BACKGROUND')[0];
27 var GetModuleSystem = requireNative('v8_context').GetModuleSystem;
28 backgroundRequire = GetModuleSystem(backgroundPage).require;
30 backgroundPage = window;
35 // For packaged apps, all windows use the bindFileEntryCallback from the
36 // background page so their FileEntry objects have the background page's context
37 // as their own. This allows them to be used from other windows (including the
38 // background page) after the original window is closed.
39 if (window == backgroundPage) {
40 var lastError = require('lastError');
41 var fileSystemNatives = requireNative('file_system_natives');
42 var GetIsolatedFileSystem = fileSystemNatives.GetIsolatedFileSystem;
43 var bindDirectoryEntryCallback = function(functionName, apiFunctions) {
44 apiFunctions.setCustomCallback(functionName,
45 function(name, request, response) {
46 if (request.callback && response) {
47 var callback = request.callback;
48 request.callback = null;
50 var fileSystemId = response.fileSystemId;
51 var baseName = response.baseName;
52 var fs = GetIsolatedFileSystem(fileSystemId);
55 fs.root.getDirectory(baseName, {}, callback, function(fileError) {
56 lastError.run('runtime.' + functionName,
57 'Error getting Entry, code: ' + fileError.code,
62 lastError.run('runtime.' + functionName,
71 // Force the runtime API to be loaded in the background page. Using
72 // backgroundPageModuleSystem.require('runtime') is insufficient as
73 // requireNative is only allowed while lazily loading an API.
74 backgroundPage.chrome.runtime;
75 var bindDirectoryEntryCallback = backgroundRequire(
76 'runtime').bindDirectoryEntryCallback;
79 binding.registerCustomHook(function(binding, id, contextType) {
80 var apiFunctions = binding.apiFunctions;
81 var runtime = binding.compiledApi;
89 apiFunctions.setHandleRequest('getManifest', function() {
90 return runtimeNatives.GetManifest();
93 apiFunctions.setHandleRequest('getURL', function(path) {
95 if (!path.length || path[0] != '/')
97 return 'chrome-extension://' + id + path;
100 var sendMessageUpdateArguments = messaging.sendMessageUpdateArguments;
101 apiFunctions.setUpdateArgumentsPreValidate('sendMessage',
102 $Function.bind(sendMessageUpdateArguments, null, 'sendMessage',
103 true /* hasOptionsArgument */));
104 apiFunctions.setUpdateArgumentsPreValidate('sendNativeMessage',
105 $Function.bind(sendMessageUpdateArguments, null, 'sendNativeMessage',
106 false /* hasOptionsArgument */));
108 apiFunctions.setHandleRequest('sendMessage',
109 function(targetId, message, options, responseCallback) {
110 var connectOptions = {name: messaging.kMessageChannel};
111 forEach(options, function(k, v) {
112 connectOptions[k] = v;
114 var port = runtime.connect(targetId || runtime.id, connectOptions);
115 messaging.sendMessageImpl(port, message, responseCallback);
118 apiFunctions.setHandleRequest('sendNativeMessage',
119 function(targetId, message, responseCallback) {
120 var port = runtime.connectNative(targetId);
121 messaging.sendMessageImpl(port, message, responseCallback);
124 apiFunctions.setUpdateArgumentsPreValidate('connect', function() {
125 // Align missing (optional) function arguments with the arguments that
126 // schema validation is expecting, e.g.
127 // runtime.connect() -> runtime.connect(null, null)
128 // runtime.connect({}) -> runtime.connect(null, {})
131 // targetId (first argument) is optional.
133 if (typeof(arguments[nextArg]) == 'string')
134 targetId = arguments[nextArg++];
136 // connectInfo (second argument) is optional.
137 var connectInfo = null;
138 if (typeof(arguments[nextArg]) == 'object')
139 connectInfo = arguments[nextArg++];
141 if (nextArg != arguments.length)
142 throw new Error('Invalid arguments to connect.');
143 return [targetId, connectInfo];
146 apiFunctions.setUpdateArgumentsPreValidate('connectNative',
148 if (typeof(appName) !== 'string') {
149 throw new Error('Invalid arguments to connectNative.');
154 apiFunctions.setHandleRequest('connect', function(targetId, connectInfo) {
155 // Don't let orphaned content scripts communicate with their extension.
156 // http://crbug.com/168263
157 if (unloadEvent.wasDispatched)
158 throw new Error('Error connecting to extension ' + targetId);
161 targetId = runtime.id;
164 if (connectInfo && connectInfo.name)
165 name = connectInfo.name;
167 var includeTlsChannelId =
168 !!(connectInfo && connectInfo.includeTlsChannelId);
170 var portId = runtimeNatives.OpenChannelToExtension(targetId, name,
171 includeTlsChannelId);
173 return messaging.createPort(portId, name);
179 if (contextType != 'BLESSED_EXTENSION')
182 apiFunctions.setHandleRequest('connectNative',
183 function(nativeAppName) {
184 if (!unloadEvent.wasDispatched) {
185 var portId = runtimeNatives.OpenChannelToNativeApp(runtime.id,
188 return messaging.createPort(portId, '');
190 throw new Error('Error connecting to native app: ' + nativeAppName);
193 apiFunctions.setCustomCallback('getBackgroundPage',
194 function(name, request, response) {
195 if (request.callback) {
196 var bg = extensionNatives.GetExtensionViews(-1, 'BACKGROUND')[0] || null;
197 request.callback(bg);
199 request.callback = null;
202 bindDirectoryEntryCallback('getPackageDirectoryEntry', apiFunctions);
205 exports.bindDirectoryEntryCallback = bindDirectoryEntryCallback;
206 exports.binding = binding.generate();