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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
use crossterm::event::{self, KeyEvent, KeyEventState, KeyModifiers};
use std::fmt;
/// Represents an key.
#[derive(PartialEq, Eq, Clone, Copy, Hash, Debug)]
pub enum Key {
/// Both Enter (or Return) and numpad Enter
Enter,
/// Tabulation key
Tab,
/// Backspace key
Backspace,
/// Escape key
Esc,
/// Left arrow
Left,
/// Right arrow
Right,
/// Up arrow
Up,
/// Down arrow
Down,
/// Insert key
Ins,
/// Delete key
Delete,
/// Home key
Home,
/// End key
End,
/// Page Up key
PageUp,
/// Page Down key
PageDown,
/// F0 key
F0,
/// F1 key
F1,
/// F2 key
F2,
/// F3 key
F3,
/// F4 key
F4,
/// F5 key
F5,
/// F6 key
F6,
/// F7 key
F7,
/// F8 key
F8,
/// F9 key
F9,
/// F10 key
F10,
/// F11 key
F11,
/// F12 key
F12,
Char(char),
Ctrl(char),
Alt(char),
Unknown,
}
impl Key {
/// Returns the function key corresponding to the given number
///
/// 1 -> F1, etc...
///
/// # Panics
///
/// If `n == 0 || n > 12`
pub fn from_f(n: u8) -> Key {
match n {
0 => Key::F0,
1 => Key::F1,
2 => Key::F2,
3 => Key::F3,
4 => Key::F4,
5 => Key::F5,
6 => Key::F6,
7 => Key::F7,
8 => Key::F8,
9 => Key::F9,
10 => Key::F10,
11 => Key::F11,
12 => Key::F12,
_ => panic!("unknown function key: F{}", n),
}
}
}
impl fmt::Display for Key {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Key::Alt(' ') => write!(f, "<Alt+Space>"),
Key::Ctrl(' ') => write!(f, "<Ctrl+Space>"),
Key::Char(' ') => write!(f, "<Space>"),
Key::Alt(c) => write!(f, "<Alt+{}>", c),
Key::Ctrl(c) => write!(f, "<Ctrl+{}>", c),
Key::Char(c) => write!(f, "{}", c),
Key::Left => write!(f, "←"),
Key::Right => write!(f, "→"),
Key::Up => write!(f, "↑"),
Key::Down => write!(f, "↓"),
Key::Enter
| Key::Tab
| Key::Backspace
| Key::Esc
| Key::Ins
| Key::Delete
| Key::Home
| Key::End
| Key::PageUp
| Key::PageDown => write!(f, "<{:?}>", self),
_ => write!(f, "{:?}", self),
}
}
}
impl From<Key> for KeyEvent {
fn from(value: Key) -> Self {
match value {
Key::Up => event::KeyEvent {
code: event::KeyCode::Up,
modifiers: KeyModifiers::empty(),
kind: event::KeyEventKind::Press,
state: KeyEventState::empty(),
},
Key::Down => event::KeyEvent {
code: event::KeyCode::Down,
modifiers: KeyModifiers::empty(),
kind: event::KeyEventKind::Press,
state: KeyEventState::empty(),
},
_ => unimplemented!(),
}
}
}
impl From<event::KeyEvent> for Key {
fn from(key_event: event::KeyEvent) -> Self {
match key_event {
event::KeyEvent {
code: event::KeyCode::Esc,
..
} => Key::Esc,
event::KeyEvent {
code: event::KeyCode::Backspace,
..
} => Key::Backspace,
event::KeyEvent {
code: event::KeyCode::Left,
..
} => Key::Left,
event::KeyEvent {
code: event::KeyCode::Right,
..
} => Key::Right,
event::KeyEvent {
code: event::KeyCode::Up,
..
} => Key::Up,
event::KeyEvent {
code: event::KeyCode::Down,
..
} => Key::Down,
event::KeyEvent {
code: event::KeyCode::Home,
..
} => Key::Home,
event::KeyEvent {
code: event::KeyCode::End,
..
} => Key::End,
event::KeyEvent {
code: event::KeyCode::PageUp,
..
} => Key::PageUp,
event::KeyEvent {
code: event::KeyCode::PageDown,
..
} => Key::PageDown,
event::KeyEvent {
code: event::KeyCode::Delete,
..
} => Key::Delete,
event::KeyEvent {
code: event::KeyCode::Insert,
..
} => Key::Ins,
event::KeyEvent {
code: event::KeyCode::F(n),
..
} => Key::from_f(n),
event::KeyEvent {
code: event::KeyCode::Enter,
..
} => Key::Enter,
event::KeyEvent {
code: event::KeyCode::Tab,
..
} => Key::Tab,
// First check for char + modifier
event::KeyEvent {
code: event::KeyCode::Char(c),
modifiers: event::KeyModifiers::ALT,
..
} => Key::Alt(c),
event::KeyEvent {
code: event::KeyCode::Char(c),
modifiers: event::KeyModifiers::CONTROL,
..
} => Key::Ctrl(c),
event::KeyEvent {
code: event::KeyCode::Char(c),
..
} => Key::Char(c),
_ => Key::Unknown,
}
}
}