extensions/renderer/send_request_natives.cc

   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.
   4
   5 #include "extensions/renderer/send_request_natives.h"
   6
   7 #include "base/json/json_reader.h"
   8 #include "content/public/child/v8_value_converter.h"
   9 #include "extensions/renderer/request_sender.h"
  10 #include "extensions/renderer/script_context.h"
  11
  12 using content::V8ValueConverter;
  13
  14 namespace extensions {
  15
  16 SendRequestNatives::SendRequestNatives(RequestSender* request_sender,
  17                                        ScriptContext* context)
  18     : ObjectBackedNativeHandler(context), request_sender_(request_sender) {
  19   RouteFunction(
  20       "StartRequest",
  21       base::Bind(&SendRequestNatives::StartRequest, base::Unretained(this)));
  22   RouteFunction(
  23       "GetGlobal",
  24       base::Bind(&SendRequestNatives::GetGlobal, base::Unretained(this)));
  25 }
  26
  27 // Starts an API request to the browser, with an optional callback.  The
  28 // callback will be dispatched to EventBindings::HandleResponse.
  29 void SendRequestNatives::StartRequest(
  30     const v8::FunctionCallbackInfo<v8::Value>& args) {
  31   CHECK_EQ(5, args.Length());
  32   std::string name = *v8::String::Utf8Value(args[0]);
  33   bool has_callback = args[2]->BooleanValue();
  34   bool for_io_thread = args[3]->BooleanValue();
  35   bool preserve_null_in_objects = args[4]->BooleanValue();
  36
  37   int request_id = request_sender_->GetNextRequestId();
  38   args.GetReturnValue().Set(static_cast<int32_t>(request_id));
  39
  40   scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());
  41
  42   // See http://crbug.com/149880. The context menus APIs relies on this, but
  43   // we shouldn't really be doing it (e.g. for the sake of the storage API).
  44   converter->SetFunctionAllowed(true);
  45
  46   if (!preserve_null_in_objects)
  47     converter->SetStripNullFromObjects(true);
  48
  49   scoped_ptr<base::Value> value_args(
  50       converter->FromV8Value(args[1], context()->v8_context()));
  51   if (!value_args.get() || !value_args->IsType(base::Value::TYPE_LIST)) {
  52     NOTREACHED() << "Unable to convert args passed to StartRequest";
  53     return;
  54   }
  55
  56   request_sender_->StartRequest(
  57       context(),
  58       name,
  59       request_id,
  60       has_callback,
  61       for_io_thread,
  62       static_cast<base::ListValue*>(value_args.get()));
  63 }
  64
  65 void SendRequestNatives::GetGlobal(
  66     const v8::FunctionCallbackInfo<v8::Value>& args) {
  67   CHECK_EQ(1, args.Length());
  68   CHECK(args[0]->IsObject());
  69   args.GetReturnValue().Set(
  70       v8::Local<v8::Object>::Cast(args[0])->CreationContext()->Global());
  71 }
  72
  73 }  // namespace extensions