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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| import React, { ReactElement, ReactNode, useEffect, useMemo, useRef } from "react"; | ||
| import ReactDOM from "react-dom/client"; | ||
| import { THEME_CSS_ATTRIBUTES } from ".."; | ||
|
|
||
| export default function Popover<T extends HTMLElement = HTMLElement>(props: Readonly<{ | ||
| open: boolean, | ||
| children: ReactNode, | ||
| setOpenOrClosed: (open: boolean) => void, | ||
| onRender?: (popoverElement: HTMLDivElement, anchorElement?: T | undefined) => void | ||
| anchorRef?: React.RefObject<T>, | ||
| className?: string | ||
| }>): ReactElement { | ||
| const thisRef = useRef<HTMLDivElement>(null); | ||
| const popoverRef = useRef<HTMLDivElement>(document.createElement('div')); | ||
|
|
||
| const popoverRoot = useMemo(() => { | ||
| const popoverElement = popoverRef.current; | ||
| popoverElement.style.position = "absolute"; | ||
|
|
||
| document.body.appendChild(popoverElement); | ||
| return ReactDOM.createRoot(popoverElement); | ||
| }, []) | ||
|
|
||
| //set ref | ||
| useEffect(() => { | ||
| const initialPopover = popoverRef.current; | ||
| return () => { | ||
| setTimeout(() => { | ||
| popoverRoot.unmount(); | ||
| }) | ||
| initialPopover.remove(); | ||
|
|
||
| popoverRef.current = document.createElement('div'); | ||
| } | ||
| }, [popoverRoot]) | ||
|
|
||
| //match css styles | ||
| useEffect(() => { | ||
| const styleBenefactor = props.anchorRef?.current ?? thisRef.current; | ||
| const popoverElement = popoverRef.current; | ||
|
|
||
| if (styleBenefactor) { | ||
| // Match styles | ||
| THEME_CSS_ATTRIBUTES.forEach(prop => { | ||
| popoverElement.style.setProperty(`--${prop}`, getComputedStyle(styleBenefactor).getPropertyValue(`--${prop}`)) | ||
| }) | ||
|
|
||
| popoverElement.className = 'popover ' + (props.className ?? '') | ||
| } | ||
| }, [props.anchorRef, props.className]) | ||
|
|
||
| // This is for the popover's anchor, not the element named Anchor | ||
| const [anchorLocation, setAnchorLocation] = React.useState(() => { | ||
| const bounds = props.anchorRef?.current?.getBoundingClientRect(); | ||
|
|
||
| if (bounds) { | ||
| return { top: bounds.top, left: bounds.left } | ||
| } else { | ||
| return {top: 0, left: 0} | ||
| } | ||
| }); | ||
|
|
||
| //close on scroll | ||
| useEffect(() => { | ||
| const listener = () => { | ||
| const bounds = props.anchorRef?.current?.getBoundingClientRect(); | ||
| if ( | ||
| bounds && | ||
| props.open && | ||
| ( | ||
| anchorLocation.top !== bounds?.top || | ||
| anchorLocation.left !== bounds?.left | ||
| ) | ||
| ) | ||
| props.setOpenOrClosed(false); | ||
| }; | ||
|
|
||
| window.addEventListener("scroll", listener, true); | ||
| window.addEventListener("resize", listener); | ||
| return () => { | ||
| window.removeEventListener("scroll", listener, true); | ||
| window.removeEventListener("resize", listener); | ||
| } | ||
| }) | ||
|
|
||
| //open and set position | ||
| useEffect(() => { | ||
| const popoverElement = popoverRef.current; | ||
| const anchorElement = props.anchorRef?.current; | ||
|
|
||
| if (props.open) { | ||
| popoverRoot.render(props.children); | ||
|
|
||
| if (anchorElement) { | ||
| const anchorBounds = anchorElement.getBoundingClientRect(); | ||
|
|
||
| setAnchorLocation({top: anchorBounds.top, left: anchorBounds.left}); | ||
| } | ||
|
|
||
| setTimeout(() => { | ||
| popoverElement.hidden = false; | ||
|
|
||
| if (props.onRender) { | ||
| props.onRender(popoverElement, anchorElement ?? undefined) | ||
| } | ||
| }) | ||
| } else { | ||
| popoverElement.hidden = true; | ||
| } | ||
| }, [props, popoverRoot]) | ||
|
|
||
| //close on click outside | ||
| useEffect(() => { | ||
| const handleClickOutside = (event: MouseEvent) => { | ||
| if (!popoverRef.current?.contains(event.target as Node) && props.open) { | ||
| props.setOpenOrClosed(false); | ||
| } | ||
| }; | ||
|
|
||
| setTimeout(() => { | ||
| document.addEventListener("click", handleClickOutside); | ||
| }) | ||
| return () => document.removeEventListener("click", handleClickOutside); | ||
| }, [props]); | ||
|
|
||
| return <div ref={thisRef} /> | ||
| } |
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