| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| import { useEffect, useRef } from 'react'; |
| |
| export function useGlobalEventListener<T extends Event>( |
| eventName: keyof WindowEventMap, |
| handler: (e: T) => void, |
| ) { |
| const lastHandler = useRef<(e: T) => void>(handler); |
| |
| useEffect(() => { |
| lastHandler.current = handler; |
| }, [handler]); |
| |
| useEffect(() => { |
| const myHandler = (e: Event) => { |
| lastHandler.current(e as T); |
| }; |
| |
| window.addEventListener(eventName, myHandler); |
| return () => { |
| window.removeEventListener(eventName, myHandler); |
| }; |
| }, [eventName]); |
| } |