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94 lines
3 KiB
TypeScript
94 lines
3 KiB
TypeScript
// gomuks - A Matrix client written in Go.
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// Copyright (C) 2024 Tulir Asokan
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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import React, { JSX, useCallback, useEffect, useLayoutEffect, useReducer, useRef } from "react"
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import { ModalCloseContext, ModalContext, ModalState } from "./contexts.ts"
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const ModalWrapper = ({ children }: { children: React.ReactNode }) => {
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const [state, setState] = useReducer((prevState: ModalState | null, newState: ModalState | null) => {
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prevState?.onClose?.()
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return newState
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}, null)
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const onClickWrapper = useCallback((evt?: React.MouseEvent) => {
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if (evt && evt.target !== evt.currentTarget) {
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return
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}
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setState(null)
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if (history.state?.modal) {
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history.back()
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}
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}, [])
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const onKeyWrapper = (evt: React.KeyboardEvent<HTMLDivElement>) => {
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if (evt.key === "Escape") {
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setState(null)
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if (history.state?.modal) {
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history.back()
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}
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}
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evt.stopPropagation()
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}
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const openModal = useCallback((newState: ModalState) => {
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if (!history.state?.modal && newState.captureInput !== false) {
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history.pushState({ ...(history.state ?? {}), modal: true }, "")
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}
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setState(newState)
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}, [])
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const wrapperRef = useRef<HTMLDivElement>(null)
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useLayoutEffect(() => {
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if (wrapperRef.current && (!document.activeElement || !wrapperRef.current.contains(document.activeElement))) {
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wrapperRef.current.focus()
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}
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}, [state])
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useEffect(() => {
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window.closeModal = onClickWrapper
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const listener = (evt: PopStateEvent) => {
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if (!evt.state?.modal) {
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setState(null)
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}
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}
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window.addEventListener("popstate", listener)
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return () => window.removeEventListener("popstate", listener)
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}, [onClickWrapper])
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let modal: JSX.Element | null = null
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if (state) {
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let content = <ModalCloseContext value={onClickWrapper}>{state.content}</ModalCloseContext>
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if (state.boxed) {
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content = <div className={`modal-box ${state.boxClass ?? ""}`}>
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<div className={`modal-box-inner ${state.innerBoxClass ?? ""}`}>
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{content}
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</div>
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</div>
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}
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if (state.captureInput !== false) {
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modal = <div
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className={`overlay modal ${state.dimmed ? "dimmed" : ""}`}
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onClick={onClickWrapper}
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onKeyDown={onKeyWrapper}
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tabIndex={-1}
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ref={wrapperRef}
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>
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{content}
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</div>
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} else {
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modal = content
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}
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}
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return <ModalContext value={openModal}>
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{children}
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{modal}
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</ModalContext>
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}
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export default ModalWrapper
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