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 Permissions API.
7 var binding = require('binding').Binding.create('permissions');
9 var Event = require('event_bindings').Event;
11 // These custom binding are only necessary because it is not currently
12 // possible to have a union of types as the type of the items in an array.
13 // Once that is fixed, this entire file should go away.
15 // https://code.google.com/p/chromium/issues/detail?id=162044
16 // https://code.google.com/p/chromium/issues/detail?id=162042
17 // TODO(bryeung): delete this file.
18 binding.registerCustomHook(function(api) {
19 var apiFunctions = api.apiFunctions;
20 var permissions = api.compiledApi;
22 function maybeConvertToObject(str) {
23 var parts = $String.split(str, '|');
24 if (parts.length != 2)
28 ret[parts[0]] = JSON.parse(parts[1]);
32 function convertObjectPermissionsToStrings() {
33 if (arguments.length < 1)
36 var args = arguments[0].permissions;
40 for (var i = 0; i < args.length; i += 1) {
41 if (typeof(args[i]) == 'object') {
43 var keys = $Object.keys(a);
44 if (keys.length != 1) {
45 throw new Error("Too many keys in object-style permission.");
47 arguments[0].permissions[i] = keys[0] + '|' +
48 JSON.stringify(a[keys[0]]);
55 // Convert complex permissions to strings so they validate against the schema
56 apiFunctions.setUpdateArgumentsPreValidate(
57 'contains', convertObjectPermissionsToStrings);
58 apiFunctions.setUpdateArgumentsPreValidate(
59 'remove', convertObjectPermissionsToStrings);
60 apiFunctions.setUpdateArgumentsPreValidate(
61 'request', convertObjectPermissionsToStrings);
63 // Convert complex permissions back to objects
64 apiFunctions.setCustomCallback('getAll',
65 function(name, request, callback, response) {
66 for (var i = 0; i < response.permissions.length; i += 1) {
67 response.permissions[i] =
68 maybeConvertToObject(response.permissions[i]);
71 // Since the schema says Permissions.permissions contains strings and
72 // not objects, validation will fail after the for-loop above. This
73 // skips validation and calls the callback directly.
78 // Also convert complex permissions back to objects for events. The
79 // dispatchToListener call happens after argument validation, which works
80 // around the problem that Permissions.permissions is supposed to be a list
82 permissions.onAdded.dispatchToListener = function(callback, args) {
83 for (var i = 0; i < args[0].permissions.length; i += 1) {
84 args[0].permissions[i] = maybeConvertToObject(args[0].permissions[i]);
86 $Function.call(Event.prototype.dispatchToListener, this, callback, args);
88 permissions.onRemoved.dispatchToListener =
89 permissions.onAdded.dispatchToListener;
92 exports.binding = binding.generate();