1 files changed, 92 insertions, 0 deletions
diff --git a/chromium/extensions/renderer/resources/permissions_custom_bindings.js b/chromium/extensions/renderer/resources/permissions_custom_bindings.js
new file mode 100644
index 00000000000..492360a9ef1
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+++ b/chromium/extensions/renderer/resources/permissions_custom_bindings.js
@@ -0,0 +1,92 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Custom binding for the Permissions API.
+
+var binding = require('binding').Binding.create('permissions');
+
+var Event = require('event_bindings').Event;
+
+// These custom binding are only necessary because it is not currently
+// possible to have a union of types as the type of the items in an array.
+// Once that is fixed, this entire file should go away.
+// See,
+// https://code.google.com/p/chromium/issues/detail?id=162044
+// https://code.google.com/p/chromium/issues/detail?id=162042
+// TODO(bryeung): delete this file.
+binding.registerCustomHook(function(api) {
+  var apiFunctions = api.apiFunctions;
+  var permissions = api.compiledApi;
+
+  function maybeConvertToObject(str) {
+    var parts = $String.split(str, '|');
+    if (parts.length != 2)
+      return str;
+
+    var ret = {};
+    ret[parts[0]] = JSON.parse(parts[1]);
+    return ret;
+  }
+
+  function convertObjectPermissionsToStrings() {
+    if (arguments.length < 1)
+      return arguments;
+
+    var args = arguments[0].permissions;
+    if (!args)
+      return arguments;
+
+    for (var i = 0; i < args.length; i += 1) {
+      if (typeof(args[i]) == 'object') {
+        var a = args[i];
+        var keys = $Object.keys(a);
+        if (keys.length != 1) {
+          throw new Error("Too many keys in object-style permission.");
+        }
+        arguments[0].permissions[i] = keys[0] + '|' +
+            JSON.stringify(a[keys[0]]);
+      }
+    }
+
+    return arguments;
+  }
+
+  // Convert complex permissions to strings so they validate against the schema
+  apiFunctions.setUpdateArgumentsPreValidate(
+      'contains', convertObjectPermissionsToStrings);
+  apiFunctions.setUpdateArgumentsPreValidate(
+      'remove', convertObjectPermissionsToStrings);
+  apiFunctions.setUpdateArgumentsPreValidate(
+      'request', convertObjectPermissionsToStrings);
+
+  // Convert complex permissions back to objects
+  apiFunctions.setCustomCallback('getAll',
+      function(name, request, callback, response) {
+        for (var i = 0; i < response.permissions.length; i += 1) {
+          response.permissions[i] =
+              maybeConvertToObject(response.permissions[i]);
+        }
+
+        // Since the schema says Permissions.permissions contains strings and
+        // not objects, validation will fail after the for-loop above.  This
+        // skips validation and calls the callback directly.
+        if (callback)
+          callback(response);
+      });
+
+  // Also convert complex permissions back to objects for events.  The
+  // dispatchToListener call happens after argument validation, which works
+  // around the problem that Permissions.permissions is supposed to be a list
+  // of strings.
+  permissions.onAdded.dispatchToListener = function(callback, args) {
+    for (var i = 0; i < args[0].permissions.length; i += 1) {
+      args[0].permissions[i] = maybeConvertToObject(args[0].permissions[i]);
+    }
+    $Function.call(Event.prototype.dispatchToListener, this, callback, args);
+  };
+  permissions.onRemoved.dispatchToListener =
+      permissions.onAdded.dispatchToListener;
+});
+
+exports.$set('binding', binding.generate());