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// Copyright (c) 2012 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.
#ifndef CHROME_RENDERER_EXTENSIONS_EXTENSION_REQUEST_SENDER_H_
#define CHROME_RENDERER_EXTENSIONS_EXTENSION_REQUEST_SENDER_H_
#pragma once
#include <string>
#include <map>
#include "base/memory/linked_ptr.h"
#include "v8/include/v8.h"
class ChromeV8ContextSet;
class ExtensionDispatcher;
namespace base {
class ListValue;
}
struct PendingRequest;
// Responsible for sending requests for named extension API functions to the
// extension host and routing the responses back to the caller.
class ExtensionRequestSender {
public:
explicit ExtensionRequestSender(ExtensionDispatcher* extension_dispatcher,
ChromeV8ContextSet* context_set);
~ExtensionRequestSender();
// Makes a call to the API function |name| that is to be handled by the
// extension host. The response to this request will be received in
// HandleResponse().
// TODO(koz): Remove |request_id| and generate that internally.
void StartRequest(const std::string& name,
int request_id,
bool has_callback,
bool for_io_thread,
base::ListValue* value_args);
// Handles responses from the extension host to calls made by StartRequest().
void HandleResponse(int request_id,
bool success,
const std::string& response,
const std::string& error);
private:
typedef std::map<int, linked_ptr<PendingRequest> > PendingRequestMap;
void InsertRequest(int request_id, PendingRequest* pending_request);
linked_ptr<PendingRequest> RemoveRequest(int request_id);
ExtensionDispatcher* extension_dispatcher_;
PendingRequestMap pending_requests_;
ChromeV8ContextSet* context_set_;
DISALLOW_COPY_AND_ASSIGN(ExtensionRequestSender);
};
#endif // CHROME_RENDERER_EXTENSIONS_EXTENSION_REQUEST_SENDER_H_
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