chrome/renderer/extensions/binding_generating_native_handler.cc

   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 #include "chrome/renderer/extensions/binding_generating_native_handler.h"
   6
   7 #include "chrome/renderer/extensions/module_system.h"
   8
   9 namespace extensions {
  10
  11 BindingGeneratingNativeHandler::BindingGeneratingNativeHandler(
  12     ModuleSystem* module_system,
  13     const std::string& api_name,
  14     const std::string& bind_to)
  15     : module_system_(module_system),
  16       api_name_(api_name),
  17       bind_to_(bind_to) {
  18 }
  19
  20 v8::Handle<v8::Object> BindingGeneratingNativeHandler::NewInstance() {
  21   v8::Isolate* isolate = module_system_->GetIsolate();
  22   v8::EscapableHandleScope scope(isolate);
  23   v8::Handle<v8::Object> binding_module =
  24       module_system_->Require("binding")->ToObject();
  25   v8::Handle<v8::Object> binding = binding_module
  26       ->Get(v8::String::NewFromUtf8(isolate, "Binding"))->ToObject();
  27   v8::Handle<v8::Function> create_binding = binding
  28       ->Get(v8::String::NewFromUtf8(isolate, "create")).As<v8::Function>();
  29   v8::Handle<v8::Value> argv[] = {v8::String::NewFromUtf8(isolate,
  30                                                           api_name_.c_str())};
  31   v8::Handle<v8::Object> binding_instance =
  32       create_binding->Call(binding, arraysize(argv), argv)->ToObject();
  33   v8::Handle<v8::Function> generate = binding_instance
  34       ->Get(v8::String::NewFromUtf8(isolate, "generate")).As<v8::Function>();
  35   v8::Local<v8::Object> object = v8::Object::New(isolate);
  36   v8::Handle<v8::Value> compiled_schema =
  37       generate->Call(binding_instance, 0, NULL);
  38   if (!compiled_schema.IsEmpty()) {
  39     object->Set(v8::String::NewFromUtf8(isolate, bind_to_.c_str()),
  40                 compiled_schema);
  41   }
  42   return scope.Escape(object);
  43 }
  44
  45 } // namespace extensions