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("GetNextRequestId",
  20                 base::Bind(&SendRequestNatives::GetNextRequestId,
  21                            base::Unretained(this)));
  22   RouteFunction(
  23       "StartRequest",
  24       base::Bind(&SendRequestNatives::StartRequest, base::Unretained(this)));
  25   RouteFunction(
  26       "GetGlobal",
  27       base::Bind(&SendRequestNatives::GetGlobal, base::Unretained(this)));
  28 }
  29
  30 void SendRequestNatives::GetNextRequestId(
  31     const v8::FunctionCallbackInfo<v8::Value>& args) {
  32   args.GetReturnValue().Set(
  33       static_cast<int32_t>(request_sender_->GetNextRequestId()));
  34 }
  35
  36 // Starts an API request to the browser, with an optional callback.  The
  37 // callback will be dispatched to EventBindings::HandleResponse.
  38 void SendRequestNatives::StartRequest(
  39     const v8::FunctionCallbackInfo<v8::Value>& args) {
  40   CHECK_EQ(6, args.Length());
  41   std::string name = *v8::String::Utf8Value(args[0]);
  42   int request_id = args[2]->Int32Value();
  43   bool has_callback = args[3]->BooleanValue();
  44   bool for_io_thread = args[4]->BooleanValue();
  45   bool preserve_null_in_objects = args[5]->BooleanValue();
  46
  47   scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());
  48
  49   // See http://crbug.com/149880. The context menus APIs relies on this, but
  50   // we shouldn't really be doing it (e.g. for the sake of the storage API).
  51   converter->SetFunctionAllowed(true);
  52
  53   if (!preserve_null_in_objects)
  54     converter->SetStripNullFromObjects(true);
  55
  56   scoped_ptr<base::Value> value_args(
  57       converter->FromV8Value(args[1], context()->v8_context()));
  58   if (!value_args.get() || !value_args->IsType(base::Value::TYPE_LIST)) {
  59     NOTREACHED() << "Unable to convert args passed to StartRequest";
  60     return;
  61   }
  62
  63   request_sender_->StartRequest(
  64       context(),
  65       name,
  66       request_id,
  67       has_callback,
  68       for_io_thread,
  69       static_cast<base::ListValue*>(value_args.get()));
  70 }
  71
  72 void SendRequestNatives::GetGlobal(
  73     const v8::FunctionCallbackInfo<v8::Value>& args) {
  74   CHECK_EQ(1, args.Length());
  75   CHECK(args[0]->IsObject());
  76   args.GetReturnValue().Set(
  77       v8::Handle<v8::Object>::Cast(args[0])->CreationContext()->Global());
  78 }
  79
  80 }  // namespace extensions