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// Copyright (c) 2014 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 DEVICE_HID_HID_SERVICE_H_
#define DEVICE_HID_HID_SERVICE_H_
#include <map>
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/string16.h"
#include "base/threading/thread_checker.h"
#include "build/build_config.h"
#include "device/hid/hid_device_info.h"
namespace device {
namespace {
class HidServiceContainer;
} // namespace
class HidConnection;
class HidService;
class HidService : public base::MessageLoop::DestructionObserver {
public:
// Must be called on FILE thread.
static HidService* GetInstance();
// Enumerates and returns a list of device identifiers.
virtual void GetDevices(std::vector<HidDeviceInfo>* devices);
// Fills in the device info struct of the given device_id.
// Returns true if succeed.
// Returns false if the device_id is invalid, with info untouched.
bool GetInfo(std::string device_id, HidDeviceInfo* info) const;
virtual scoped_refptr<HidConnection> Connect(
std::string platform_device_id) = 0;
// Implements base::MessageLoop::DestructionObserver
virtual void WillDestroyCurrentMessageLoop() OVERRIDE;
// Gets whether the HidService have been successfully initialized.
bool initialized() const { return initialized_; }
protected:
friend class HidServiceContainer;
friend struct base::DefaultDeleter<HidService>;
friend class HidConnectionTest;
HidService();
virtual ~HidService();
static HidService* CreateInstance();
virtual void AddDevice(HidDeviceInfo info);
virtual void RemoveDevice(std::string platform_device_id);
typedef std::map<std::string, HidDeviceInfo> DeviceMap;
DeviceMap devices_;
bool initialized_;
base::ThreadChecker thread_checker_;
DISALLOW_COPY_AND_ASSIGN(HidService);
};
} // namespace device
#endif // DEVICE_HID_HID_SERVICE_H_
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