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feat(portal): add ARIA & focusing with key event
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| import { keyframes } from '@emotion/react'; | ||
| import styled from '@emotion/styled'; | ||
| import React, { useState } from 'react'; | ||
|
|
||
| import { usePortal } from '@/components/Portal/usePortal'; | ||
| import { composeEventHandlers } from '@/libs/event'; | ||
| import { composeRefs } from '@/libs/ref'; | ||
| import { PositionType } from '@/types/position'; | ||
|
|
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| interface ModalContentProps extends React.ComponentProps<'div'> { | ||
| ref: React.ForwardedRef<HTMLDivElement>; | ||
| width?: React.CSSProperties['width']; | ||
| disabledBG?: boolean; | ||
| } | ||
|
|
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| const Portal = ({ children, ref, width, onKeyDown, ...props }: ModalContentProps) => { | ||
| const portalRef = React.useRef<HTMLDivElement>(null); | ||
| const { showModal, toggleElement, reorgPos } = usePortal({ portalRef }); | ||
| const [items, setItems] = useState<HTMLElement[]>([]); | ||
|
|
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| const ACTIONS: Record<string, (e: React.KeyboardEvent<HTMLInputElement>) => void> = { | ||
| ArrowDown: () => focus('next'), | ||
| ArrowUp: () => focus('prev'), | ||
| Tab: e => e.preventDefault(), | ||
| Enter: () => select(), | ||
| }; | ||
|
|
||
| const handleOnKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => { | ||
| if (Object.keys(ACTIONS).includes(e.key)) { | ||
| const handler = ACTIONS[e.key]; | ||
|
|
||
| if (handler) { | ||
| e.preventDefault(); | ||
| handler(e); | ||
| } | ||
| } | ||
| }; | ||
|
|
||
| const focus = (key: 'next' | 'prev'): void => { | ||
| if (!items.length) return; | ||
|
|
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| const { activeElement } = document; | ||
|
|
||
| if (activeElement instanceof HTMLElement) { | ||
| let idx = items.indexOf(activeElement); | ||
| if (key === 'next') idx = (idx + 1) % items.length; | ||
| else idx = (idx - 1 + items.length) % items.length; | ||
|
|
||
| const nextElement = items[idx] as HTMLElement; | ||
| if (nextElement) nextElement.focus(); | ||
| } | ||
| }; | ||
|
|
||
| const select = () => { | ||
| const { activeElement } = document; | ||
|
|
||
| const clickEvent = new MouseEvent('click', { | ||
| bubbles: true, | ||
| cancelable: true, | ||
| view: window, | ||
| }); | ||
|
|
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| activeElement?.dispatchEvent(clickEvent); | ||
| }; | ||
|
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| const handleOpen = React.useCallback(() => { | ||
| if (portalRef.current) { | ||
| portalRef.current.focus(); | ||
| setItems( | ||
| Array.from(portalRef.current.querySelectorAll<HTMLElement>('[data-focus-enabled="true"]')).filter(e => { | ||
| return e.getAttribute('disabled') == null; | ||
| }), | ||
| ); | ||
| } | ||
| }, []); | ||
|
|
||
| React.useEffect(() => { | ||
| if (showModal && portalRef.current) handleOpen(); | ||
| }, [handleOpen, showModal]); | ||
|
|
||
| return ( | ||
| <PortalStyled | ||
| ref={composeRefs(portalRef, ref)} | ||
| width={width || toggleElement?.getBoundingClientRect().width} | ||
| position={reorgPos} | ||
| onKeyDown={composeEventHandlers(handleOnKeyDown, onKeyDown)} | ||
| tabIndex={-1} | ||
| {...props} | ||
| > | ||
| {children} | ||
| </PortalStyled> | ||
| ); | ||
| }; | ||
| export default Portal; | ||
|
|
||
| const enterAnimation = keyframes` | ||
| 0% { opacity: 0; } | ||
| 100% { opacity: 1; } | ||
| `; | ||
|
|
||
| const PortalStyled = styled.div<{ width?: React.CSSProperties['width']; position: PositionType }>` | ||
| display: grid; | ||
| min-width: max-content; | ||
| ${({ width }) => width && `width: ${typeof width === 'string' ? width : `${width}px`};`} | ||
| padding: 0.25rem; | ||
| border-radius: 0.25rem; | ||
| position: fixed; | ||
| top: 0px; | ||
| left: 0px; | ||
| transform: ${({ position }) => `translate(${position.x}px, ${position.y}px)`}; | ||
| background-color: white; | ||
| pointer-events: auto; | ||
| z-index: 50; | ||
| animation-name: ${enterAnimation}; | ||
| animation-duration: 0.15s; | ||
| border: 1px solid var(--gray-300); | ||
| box-shadow: 0px 2px 2px 0px var(--gray-300); | ||
| &:focus { | ||
| outline: none; | ||
| } | ||
| `; |
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