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// Copyright 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 CHROME_BROWSER_CHROMEOS_DEVICE_INPUT_SERVICE_PROXY_H_
#define CHROME_BROWSER_CHROMEOS_DEVICE_INPUT_SERVICE_PROXY_H_
#include <vector>
#include "base/callback.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/threading/thread_checker.h"
#include "device/hid/input_service_linux.h"
namespace chromeos {
// Proxy to device::InputServiceLinux. Should be created and used on the UI
// thread.
class InputServiceProxy {
public:
typedef device::InputServiceLinux::InputDeviceInfo InputDeviceInfo;
class Observer {
public:
virtual ~Observer() {}
virtual void OnInputDeviceAdded(const InputDeviceInfo& info) = 0;
virtual void OnInputDeviceRemoved(const std::string& id) = 0;
};
typedef base::Callback<void(const std::vector<InputDeviceInfo>& devices)>
GetDevicesCallback;
typedef base::Callback<void(bool success, const InputDeviceInfo& info)>
GetDeviceInfoCallback;
InputServiceProxy();
~InputServiceProxy();
// Used for early init for cashing info about available HID.
static void WarmUp();
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
void GetDevices(const GetDevicesCallback& callback);
void GetDeviceInfo(const std::string& id,
const GetDeviceInfoCallback& callback);
private:
class ServiceObserver;
void OnDeviceAdded(const device::InputServiceLinux::InputDeviceInfo& info);
void OnDeviceRemoved(const std::string& id);
ObserverList<Observer> observers_;
scoped_ptr<ServiceObserver> service_observer_;
base::ThreadChecker thread_checker_;
base::WeakPtrFactory<InputServiceProxy> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(InputServiceProxy);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_DEVICE_INPUT_SERVICE_PROXY_H_
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