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.
4
5// Custom binding for the tabs API.
6
7var binding = require('binding').Binding.create('tabs');
8
9var messaging = require('messaging');
10var tabsNatives = requireNative('tabs');
11var OpenChannelToTab = tabsNatives.OpenChannelToTab;
12var sendRequestIsDisabled = requireNative('process').IsSendRequestDisabled();
13
14binding.registerCustomHook(function(bindingsAPI, extensionId) {
15  var apiFunctions = bindingsAPI.apiFunctions;
16  var tabs = bindingsAPI.compiledApi;
17
18  apiFunctions.setHandleRequest('connect', function(tabId, connectInfo) {
19    var name = '';
20    if (connectInfo) {
21      name = connectInfo.name || name;
22    }
23    var portId = OpenChannelToTab(tabId, extensionId, name);
24    return messaging.createPort(portId, name);
25  });
26
27  apiFunctions.setHandleRequest('sendRequest',
28                                function(tabId, request, responseCallback) {
29    if (sendRequestIsDisabled)
30      throw new Error(sendRequestIsDisabled);
31    var port = tabs.connect(tabId, {name: messaging.kRequestChannel});
32    messaging.sendMessageImpl(port, request, responseCallback);
33  });
34
35  apiFunctions.setHandleRequest('sendMessage',
36                                function(tabId, message, responseCallback) {
37    var port = tabs.connect(tabId, {name: messaging.kMessageChannel});
38    messaging.sendMessageImpl(port, message, responseCallback);
39  });
40});
41
42exports.binding = binding.generate();
43