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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,19 +1,24 @@ | ||
| import { useEffect, useRef } from 'react' | ||
| import { MutableRefObject, useEffect } from 'react' | ||
|
|
||
| import { getOwnerWindow } from '../utils/owner' | ||
| import { useLatestValue } from './use-latest-value' | ||
|
|
||
| export function useWindowEvent<TType extends keyof WindowEventMap>( | ||
| type: TType, | ||
| listener: (this: Window, ev: WindowEventMap[TType]) => any, | ||
| options?: boolean | AddEventListenerOptions | ||
| listener: (ev: WindowEventMap[TType]) => any, | ||
| options?: boolean | AddEventListenerOptions, | ||
| contextElement: Element | MutableRefObject<Element | null> | null = null | ||
| ) { | ||
| let listenerRef = useRef(listener) | ||
| listenerRef.current = listener | ||
| let listenerRef = useLatestValue(listener) | ||
| let target = getOwnerWindow(contextElement) | ||
| console.log(target, target.document) | ||
|
|
||
| useEffect(() => { | ||
| function handler(event: WindowEventMap[TType]) { | ||
| listenerRef.current.call(window, event) | ||
| listenerRef.current(event) | ||
| } | ||
|
|
||
| window.addEventListener(type, handler, options) | ||
| return () => window.removeEventListener(type, handler, options) | ||
| }, [type, options]) | ||
| target.addEventListener(type, handler, options) | ||
| return () => target.removeEventListener(type, handler, options) | ||
| }, [type, options, target]) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| import { useCallback, useEffect, useMemo, useRef, useState } from 'react' | ||
| import { createPortal } from 'react-dom' | ||
| import { FocusTrap } from '@headlessui/react' | ||
|
|
||
| function Window({ onClose, children }: { onClose: () => void; children: (window: Window) => any }) { | ||
| const newWindow = useMemo(() => window.open('', 'window', 'width=300'), []) | ||
|
|
||
| const [_, _forceUpdate] = useState({}) | ||
| const forceUpdate = useCallback(() => _forceUpdate({}), []) | ||
|
|
||
| useEffect(() => { | ||
| if (newWindow) return () => newWindow.close() | ||
| }, [newWindow]) | ||
|
|
||
| useEffect(() => { | ||
| if (newWindow) { | ||
| newWindow.addEventListener('beforeunload', onClose) | ||
| newWindow.addEventListener('load', forceUpdate) | ||
|
|
||
| return () => { | ||
| newWindow.removeEventListener('load', forceUpdate) | ||
| newWindow.removeEventListener('beforeunload', onClose) | ||
| } | ||
| } | ||
|
|
||
| // document is required to re-add these event listeners after initial | ||
| // navigation | ||
| // eslint-disable-next-line react-hooks/exhaustive-deps | ||
| }, [newWindow, newWindow?.document, onClose, forceUpdate]) | ||
|
|
||
| return newWindow ? createPortal(<>{children(newWindow)}</>, newWindow.document.body) : null | ||
| } | ||
|
|
||
| function FocusTrapper() { | ||
| const [focusTrapped, setFocusTrapped] = useState(false) | ||
|
|
||
| const contents = ( | ||
| <> | ||
| <label> | ||
| <input | ||
| type="checkbox" | ||
| checked={focusTrapped} | ||
| onChange={(e) => setFocusTrapped(e.target.checked)} | ||
| /> | ||
| Trap focus! | ||
| </label> | ||
| <button>Hello 1</button> | ||
| <button>Hello 2</button> | ||
| <button>Hello 3</button> | ||
| </> | ||
| ) | ||
|
|
||
| return focusTrapped ? <FocusTrap>{contents}</FocusTrap> : contents | ||
| } | ||
|
|
||
| export default function App() { | ||
| const [windowOpen, setWindowOpen] = useState(false) | ||
| const onWindowClose = useCallback(() => setWindowOpen(false), []) | ||
|
|
||
| const windowRender = useCallback( | ||
| () => ( | ||
| <> | ||
| <FocusTrapper /> | ||
| <label> | ||
| <input | ||
| type="checkbox" | ||
| checked={windowOpen} | ||
| onChange={(e) => setWindowOpen(e.target.checked)} | ||
| /> | ||
| Open window | ||
| </label> | ||
| </> | ||
| ), | ||
| [windowOpen] | ||
| ) | ||
|
|
||
| return ( | ||
| <div className="App"> | ||
| <FocusTrapper /> | ||
| <div> | ||
| <label> | ||
| <input | ||
| type="checkbox" | ||
| checked={windowOpen} | ||
| onChange={(e) => setWindowOpen(e.target.checked)} | ||
| /> | ||
| Open window | ||
| </label> | ||
| </div> | ||
| {windowOpen && <Window onClose={onWindowClose}>{windowRender}</Window>} | ||
| </div> | ||
| ) | ||
| } |