jiti-meet/modules/keycode/keycode.js

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/**
* Enumerates the supported keys.
2017-01-23 20:59:51 +00:00
* NOTE: The maps represents physical keys on the keyboard, not chars.
* @readonly
* @enum {string}
*/
export const KEYS = {
BACKSPACE: 'backspace',
DELETE: 'delete',
RETURN: 'enter',
TAB: 'tab',
ESCAPE: 'escape',
UP: 'up',
DOWN: 'down',
RIGHT: 'right',
LEFT: 'left',
HOME: 'home',
END: 'end',
PAGEUP: 'pageup',
PAGEDOWN: 'pagedown',
F1: 'f1',
F2: 'f2',
F3: 'f3',
F4: 'f4',
F5: 'f5',
F6: 'f6',
F7: 'f7',
F8: 'f8',
F9: 'f9',
F10: 'f10',
F11: 'f11',
F12: 'f12',
META: 'command',
CMD_L: 'command',
CMD_R: 'command',
ALT: 'alt',
CONTROL: 'control',
SHIFT: 'shift',
CAPS_LOCK: 'caps_lock', // not supported by robotjs
SPACE: 'space',
PRINTSCREEN: 'printscreen',
INSERT: 'insert',
NUMPAD_0: 'numpad_0',
NUMPAD_1: 'numpad_1',
NUMPAD_2: 'numpad_2',
NUMPAD_3: 'numpad_3',
NUMPAD_4: 'numpad_4',
NUMPAD_5: 'numpad_5',
NUMPAD_6: 'numpad_6',
NUMPAD_7: 'numpad_7',
NUMPAD_8: 'numpad_8',
NUMPAD_9: 'numpad_9',
COMMA: ',',
PERIOD: '.',
SEMICOLON: ';',
QUOTE: '\'',
BRACKET_LEFT: '[',
BRACKET_RIGHT: ']',
BACKQUOTE: '`',
BACKSLASH: '\\',
MINUS: '-',
EQUAL: '=',
SLASH: '/'
};
/* eslint-disable max-len */
/**
* Mapping between the key codes and keys deined in KEYS.
* The mappings are based on
* https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode#Specifications
*/
/* eslint-enable max-len */
const keyCodeToKey = {
8: KEYS.BACKSPACE,
9: KEYS.TAB,
13: KEYS.RETURN,
16: KEYS.SHIFT,
17: KEYS.CONTROL,
18: KEYS.ALT,
20: KEYS.CAPS_LOCK,
27: KEYS.ESCAPE,
32: KEYS.SPACE,
33: KEYS.PAGEUP,
34: KEYS.PAGEDOWN,
35: KEYS.END,
36: KEYS.HOME,
37: KEYS.LEFT,
38: KEYS.UP,
39: KEYS.RIGHT,
40: KEYS.DOWN,
42: KEYS.PRINTSCREEN,
44: KEYS.PRINTSCREEN,
45: KEYS.INSERT,
46: KEYS.DELETE,
59: KEYS.SEMICOLON,
61: KEYS.EQUAL,
91: KEYS.CMD_L,
92: KEYS.CMD_R,
93: KEYS.CMD_R,
96: KEYS.NUMPAD_0,
97: KEYS.NUMPAD_1,
98: KEYS.NUMPAD_2,
99: KEYS.NUMPAD_3,
100: KEYS.NUMPAD_4,
101: KEYS.NUMPAD_5,
102: KEYS.NUMPAD_6,
103: KEYS.NUMPAD_7,
104: KEYS.NUMPAD_8,
105: KEYS.NUMPAD_9,
112: KEYS.F1,
113: KEYS.F2,
114: KEYS.F3,
115: KEYS.F4,
116: KEYS.F5,
117: KEYS.F6,
118: KEYS.F7,
119: KEYS.F8,
120: KEYS.F9,
121: KEYS.F10,
122: KEYS.F11,
123: KEYS.F12,
124: KEYS.PRINTSCREEN,
173: KEYS.MINUS,
186: KEYS.SEMICOLON,
187: KEYS.EQUAL,
188: KEYS.COMMA,
189: KEYS.MINUS,
190: KEYS.PERIOD,
191: KEYS.SLASH,
192: KEYS.BACKQUOTE,
219: KEYS.BRACKET_LEFT,
220: KEYS.BACKSLASH,
221: KEYS.BRACKET_RIGHT,
222: KEYS.QUOTE,
224: KEYS.META,
229: KEYS.SEMICOLON
};
/**
* Generate codes for digit keys (0-9)
*/
for (let i = 0; i < 10; i++) {
keyCodeToKey[i + 48] = `${i}`;
}
/**
* Generate codes for letter keys (a-z)
*/
for (let i = 0; i < 26; i++) {
const keyCode = i + 65;
keyCodeToKey[keyCode] = String.fromCharCode(keyCode).toLowerCase();
}
/**
* Returns key associated with the keyCode from the passed event.
* @param {KeyboardEvent} event the event
* @returns {KEYS} the key on the keyboard.
*/
export function keyboardEventToKey(event) {
return keyCodeToKey[event.which];
}