42 lines
1015 B
TypeScript
42 lines
1015 B
TypeScript
import { useEffect } from '../lib/teact/teact';
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import { createCallbackManager } from '../util/callbacks';
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import { getHotkeyMatcher } from '../util/parseHotkey';
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const IGNORE_TAGS = new Set(['INPUT', 'TEXTAREA', 'SELECT']);
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const handlers = createCallbackManager();
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document.documentElement.addEventListener('keydown', handlers.runCallbacks);
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export function useHotkeys(hotkeys?: Record<string, (e: KeyboardEvent) => void>) {
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useEffect(() => {
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if (!hotkeys) {
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return undefined;
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}
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const entries = Object.entries(hotkeys);
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function handleKeyDown(e: KeyboardEvent) {
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if (!shouldFireEvent(e)) {
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return;
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}
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entries.forEach(([hotkey, handler]) => {
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if (getHotkeyMatcher(hotkey)(e)) {
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handler(e);
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}
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});
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}
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return handlers.addCallback(handleKeyDown);
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}, [hotkeys]);
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}
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function shouldFireEvent(e: KeyboardEvent) {
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if (e.target instanceof HTMLElement) {
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return !IGNORE_TAGS.has(e.target.tagName);
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}
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return true;
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}
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