1 // Copyright 2013 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/pepper_request_proxy.h" 6 7 #include "base/values.h" 8 #include "chrome/renderer/extensions/chrome_v8_context.h" 9 #include "content/public/renderer/v8_value_converter.h" 10 11 namespace extensions { 12 13 PepperRequestProxy::PepperRequestProxy(ChromeV8Context* context) 14 : context_(context), 15 isolate_(context->v8_context()->GetIsolate()), 16 next_request_id_(0) {} 17 18 PepperRequestProxy::~PepperRequestProxy() {} 19 20 bool PepperRequestProxy::StartRequest(const ResponseCallback& callback, 21 const std::string& request_name, 22 const base::ListValue& args, 23 std::string* error) { 24 int request_id = next_request_id_++; 25 pending_request_map_[request_id] = callback; 26 27 // TODO(sammc): Converting from base::Value to v8::Value and then back to 28 // base::Value is not optimal. For most API calls the JS code doesn't do much. 29 // http://crbug.com/324115. 30 v8::HandleScope scope(isolate_); 31 scoped_ptr<content::V8ValueConverter> converter( 32 content::V8ValueConverter::create()); 33 std::vector<v8::Handle<v8::Value> > v8_args; 34 v8_args.push_back(v8::String::NewFromUtf8(isolate_, request_name.c_str())); 35 v8_args.push_back(v8::Integer::New(request_id)); 36 for (base::ListValue::const_iterator it = args.begin(); it != args.end(); 37 ++it) { 38 v8_args.push_back(converter->ToV8Value(*it, context_->v8_context())); 39 } 40 v8::Handle<v8::Value> v8_error = context_->module_system()->CallModuleMethod( 41 "pepper_request", "startRequest", &v8_args); 42 if (v8_error->IsString()) { 43 if (error) { 44 *error = *v8::String::Utf8Value(v8_error); 45 pending_request_map_.erase(request_id); 46 } 47 return false; 48 } 49 50 return true; 51 } 52 53 void PepperRequestProxy::OnResponseReceived(int request_id, 54 bool success, 55 const base::ListValue& args, 56 const std::string& error) { 57 PendingRequestMap::iterator it = pending_request_map_.find(request_id); 58 DCHECK(it != pending_request_map_.end()); 59 it->second.Run(success, args, error); 60 pending_request_map_.erase(it); 61 } 62 63 } // namespace extensions 64
