127 lines
3.5 KiB
TypeScript
127 lines
3.5 KiB
TypeScript
/*
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* Vesktop, a desktop app aiming to give you a snappier Discord Experience
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* Copyright (c) 2026 Vendicated and Vesktop contributors
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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const MODIFIER_KEYS = new Set(["Control", "Shift", "Alt", "Meta", "Dead"]);
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const VALID_PUNCTUATION = new Set(')!@#$%^&*(;:=<,_-.>?/~`{][|\\}"');
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// Codes whose accelerator name matches the code value exactly
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const PASSTHROUGH_CODES = new Set([
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"Space",
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"Tab",
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"Backspace",
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"Delete",
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"Insert",
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"Home",
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"End",
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"PageUp",
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"PageDown",
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"PrintScreen",
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"Escape"
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]);
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// Codes that need an explicit rename
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const CODE_MAP: Record<string, string> = {
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Enter: "Return",
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NumpadEnter: "Return",
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NumpadDecimal: "numdec",
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NumpadAdd: "numadd",
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NumpadSubtract: "numsub",
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NumpadMultiply: "nummult",
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NumpadDivide: "numdiv",
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CapsLock: "Capslock",
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NumLock: "Numlock",
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ScrollLock: "Scrolllock",
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ArrowUp: "Up",
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ArrowDown: "Down",
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ArrowLeft: "Left",
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ArrowRight: "Right"
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};
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const MEDIA_KEY_MAP: Record<string, string> = {
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AudioVolumeUp: "VolumeUp",
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AudioVolumeDown: "VolumeDown",
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AudioVolumeMute: "VolumeMute",
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MediaTrackNext: "MediaNextTrack",
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MediaTrackPrevious: "MediaPreviousTrack",
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MediaStop: "MediaStop",
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MediaPlayPause: "MediaPlayPause"
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};
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function codeToAcceleratorKey(event: KeyboardEvent): string | null {
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const { code, key } = event;
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// Letters: KeyA -> A
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const letterMatch = /^Key([A-Z])$/.exec(code);
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if (letterMatch) return letterMatch[1];
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// Digits: Digit0 -> 0
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const digitMatch = /^Digit(\d)$/.exec(code);
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if (digitMatch) return digitMatch[1];
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// Function keys: F1-F24
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if (/^F([1-9]|1\d|2[0-4])$/.test(code)) return code;
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// Numpad digits: Numpad0 -> num0
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const numpadDigitMatch = /^Numpad(\d)$/.exec(code);
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if (numpadDigitMatch) return "num" + numpadDigitMatch[1];
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if (PASSTHROUGH_CODES.has(code)) return code;
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if (code in CODE_MAP) return CODE_MAP[code];
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// Media / audio keys (identified by event.key)
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if (key in MEDIA_KEY_MAP) return MEDIA_KEY_MAP[key];
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// Punctuation keys
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if (key === "+") return "Plus";
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if (VALID_PUNCTUATION.has(key)) return key;
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return null;
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}
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export async function recordKeybind(signal?: AbortSignal): Promise<string> {
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return new Promise((resolve, reject) => {
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if (signal?.aborted) {
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reject(new DOMException("Recording aborted", "AbortError"));
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return;
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}
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function cleanup() {
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document.removeEventListener("keydown", onKeyDown, { capture: true });
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signal?.removeEventListener("abort", onAbort);
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}
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function onAbort() {
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cleanup();
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reject(new DOMException("Recording aborted", "AbortError"));
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}
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function onKeyDown(event: KeyboardEvent) {
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event.preventDefault();
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event.stopImmediatePropagation();
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if (MODIFIER_KEYS.has(event.key)) return;
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const key = codeToAcceleratorKey(event);
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if (key === null) return;
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cleanup();
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const parts: string[] = [];
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if (event.ctrlKey) parts.push("Ctrl");
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if (event.shiftKey) parts.push("Shift");
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if (event.altKey) parts.push("Alt");
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if (event.metaKey) parts.push("Super");
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parts.push(key);
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resolve(parts.join("+"));
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}
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signal?.addEventListener("abort", onAbort, { once: true });
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document.addEventListener("keydown", onKeyDown, { capture: true });
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});
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}
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