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
|
// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_ACCELERATORS_ACCELERATOR_CAPSLOCK_STATE_MACHINE_H_
#define ASH_ACCELERATORS_ACCELERATOR_CAPSLOCK_STATE_MACHINE_H_
#include "ash/ash_export.h"
#include "ui/events/event_handler.h"
#include "ui/ozone/public/input_controller.h"
namespace ash {
// Keeps track of when capslock is able to be toggled via Search + Alt keyboard
// shortcuts.
class ASH_EXPORT AcceleratorCapslockStateMachine : public ui::EventHandler {
public:
enum class CapslockState {
// Initial state waiting for either Alt or Meta to be pressed.
kStart,
// Waiting for Alt to be pressed so we can advance to kPrimed.
kWaitingAlt,
// Waiting for Search to be pressed so we can advance to kPrimed.
kWaitingSearch,
// When Alt is released causing the accelerator to be able to be fired. Here
// we are waiting for Alt to be pressed again so we can move to kPrimed.
kTriggerAlt,
// When Search is released causing the accelerator to be able to be fired.
// Here we are waiting for Search to be pressed again so we can move to
// kPrimed.
kTriggerSearch,
// When we should wait for all keys to be released so we move back to
// kStart.
kSuppress,
// When both Search and Alt are being held down and we are waiting for one
// of them to be released.
kPrimed
};
explicit AcceleratorCapslockStateMachine(
ui::InputController* input_controller);
AcceleratorCapslockStateMachine(const AcceleratorCapslockStateMachine&) =
delete;
AcceleratorCapslockStateMachine& operator=(
const AcceleratorCapslockStateMachine&) = delete;
~AcceleratorCapslockStateMachine() override;
// ui::EventHandler:
void OnKeyEvent(ui::KeyEvent* event) override;
void OnMouseEvent(ui::MouseEvent* event) override;
bool CanHandleCapsLock() const {
return current_state_ == CapslockState::kTriggerAlt ||
current_state_ == CapslockState::kTriggerSearch;
}
CapslockState current_state() const { return current_state_; }
void SetCanHandleCapsLockForTesting(bool can_handle);
private:
CapslockState current_state_ = CapslockState::kStart;
raw_ptr<ui::InputController> input_controller_;
};
} // namespace ash
#endif // ASH_ACCELERATORS_ACCELERATOR_CAPSLOCK_STATE_MACHINE_H_
|
