nonbinary.computer
forked from
oppi.li/claude-code
source dump of claude code
oppi.li
1import type { ParsedKey } from '../parse-keypress.js'
2import { TerminalEvent } from './terminal-event.js'
3
4/**
5 * Keyboard event dispatched through the DOM tree via capture/bubble.
6 *
7 * Follows browser KeyboardEvent semantics: `key` is the literal character
8 * for printable keys ('a', '3', ' ', '/') and a multi-char name for
9 * special keys ('down', 'return', 'escape', 'f1'). The idiomatic
10 * printable-char check is `e.key.length === 1`.
11 */
12export class KeyboardEvent extends TerminalEvent {
13 readonly key: string
14 readonly ctrl: boolean
15 readonly shift: boolean
16 readonly meta: boolean
17 readonly superKey: boolean
18 readonly fn: boolean
19
20 constructor(parsedKey: ParsedKey) {
21 super('keydown', { bubbles: true, cancelable: true })
22
23 this.key = keyFromParsed(parsedKey)
24 this.ctrl = parsedKey.ctrl
25 this.shift = parsedKey.shift
26 this.meta = parsedKey.meta || parsedKey.option
27 this.superKey = parsedKey.super
28 this.fn = parsedKey.fn
29 }
30}
31
32function keyFromParsed(parsed: ParsedKey): string {
33 const seq = parsed.sequence ?? ''
34 const name = parsed.name ?? ''
35
36 // Ctrl combos: sequence is a control byte (\x03 for ctrl+c), name is the
37 // letter. Browsers report e.key === 'c' with e.ctrlKey === true.
38 if (parsed.ctrl) return name
39
40 // Single printable char (space through ~, plus anything above ASCII):
41 // use the literal char. Browsers report e.key === '3', not 'Digit3'.
42 if (seq.length === 1) {
43 const code = seq.charCodeAt(0)
44 if (code >= 0x20 && code !== 0x7f) return seq
45 }
46
47 // Special keys (arrows, F-keys, return, tab, escape, etc.): sequence is
48 // either an escape sequence (\x1b[B) or a control byte (\r, \t), so use
49 // the parsed name. Browsers report e.key === 'ArrowDown'.
50 return name || seq
51}