blob: 484e8115909de9934767d27c22d4d1744ec18f68 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
// 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 DEVICE_HID_INPUT_SERVICE_LINUX_H_
#define DEVICE_HID_INPUT_SERVICE_LINUX_H_
#include <memory>
#include <string>
#include <vector>
#include "base/compiler_specific.h"
#include "base/containers/hash_tables.h"
#include "base/macros.h"
#include "base/observer_list.h"
#include "base/threading/thread_checker.h"
namespace device {
// This class provides information and notifications about
// connected/disconnected input/HID devices. This class is *NOT*
// thread-safe and all methods must be called from the FILE thread.
class InputServiceLinux {
public:
struct InputDeviceInfo {
enum Subsystem { SUBSYSTEM_HID, SUBSYSTEM_INPUT, SUBSYSTEM_UNKNOWN };
enum Type { TYPE_BLUETOOTH, TYPE_USB, TYPE_SERIO, TYPE_UNKNOWN };
InputDeviceInfo();
InputDeviceInfo(const InputDeviceInfo& other);
std::string id;
std::string name;
Subsystem subsystem;
Type type;
bool is_accelerometer : 1;
bool is_joystick : 1;
bool is_key : 1;
bool is_keyboard : 1;
bool is_mouse : 1;
bool is_tablet : 1;
bool is_touchpad : 1;
bool is_touchscreen : 1;
};
using DeviceMap = base::hash_map<std::string, InputDeviceInfo>;
class Observer {
public:
virtual ~Observer() {}
virtual void OnInputDeviceAdded(const InputDeviceInfo& info) = 0;
virtual void OnInputDeviceRemoved(const std::string& id) = 0;
};
InputServiceLinux();
virtual ~InputServiceLinux();
// Returns the InputServiceLinux instance for the current process. Creates one
// if none has been set.
static InputServiceLinux* GetInstance();
// Returns true if an InputServiceLinux instance has been set for the current
// process. An instance is set on the first call to GetInstance() or
// SetForTesting().
static bool HasInstance();
// Sets the InputServiceLinux instance for the current process. Cannot be
// called if GetInstance() or SetForTesting() has already been called in the
// current process. |service| will never be deleted.
static void SetForTesting(std::unique_ptr<InputServiceLinux> service);
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// Returns list of all currently connected input/hid devices.
virtual void GetDevices(std::vector<InputDeviceInfo>* devices);
// Returns an info about input device identified by |id|. When there're
// no input or hid device with such id, returns false and doesn't
// modify |info|.
bool GetDeviceInfo(const std::string& id, InputDeviceInfo* info) const;
protected:
void AddDevice(const InputDeviceInfo& info);
void RemoveDevice(const std::string& id);
bool CalledOnValidThread() const;
DeviceMap devices_;
base::ObserverList<Observer> observers_;
private:
base::ThreadChecker thread_checker_;
DISALLOW_COPY_AND_ASSIGN(InputServiceLinux);
};
} // namespace device
#endif // DEVICE_HID_INPUT_SERVICE_LINUX_H_
|
