stacker.news/components/modal.js

125 lines
3.5 KiB
JavaScript

import { createContext, useCallback, useContext, useEffect, useMemo, useReducer, useRef } from 'react'
import Modal from 'react-bootstrap/Modal'
import BackArrow from '@/svgs/arrow-left-line.svg'
import { useRouter } from 'next/router'
import ActionDropdown from './action-dropdown'
export const ShowModalContext = createContext(() => null)
export function ShowModalProvider ({ children }) {
const [modal, showModal] = useModal()
const contextValue = showModal
return (
<ShowModalContext.Provider value={contextValue}>
{children}
{modal}
</ShowModalContext.Provider>
)
}
export function useShowModal () {
return useContext(ShowModalContext)
}
export default function useModal () {
const modalStack = useRef([])
const [render, forceUpdate] = useReducer(x => x + 1, 0)
const getCurrentContent = useCallback(() => {
return modalStack.current[modalStack.current.length - 1]
}, [])
const onBack = useCallback(() => {
getCurrentContent()?.options?.onClose?.()
modalStack.current.pop()
forceUpdate()
}, [])
const setOptions = useCallback(options => {
const current = getCurrentContent()
if (current) {
current.options = { ...current.options, ...options }
forceUpdate()
}
}, [getCurrentContent, forceUpdate])
// this is called on every navigation due to below useEffect
const onClose = useCallback((options) => {
if (options?.back) {
for (let i = 0; i < options.back; i++) {
onBack()
}
return
}
while (modalStack.current.length) {
getCurrentContent()?.options?.onClose?.()
modalStack.current.pop()
}
forceUpdate()
}, [onBack])
const router = useRouter()
useEffect(() => {
const maybeOnClose = () => {
const content = getCurrentContent()
const { persistOnNavigate } = content?.options || {}
if (!persistOnNavigate) {
onClose()
}
}
router.events.on('routeChangeStart', maybeOnClose)
return () => router.events.off('routeChangeStart', maybeOnClose)
}, [router.events, onClose, getCurrentContent])
const modal = useMemo(() => {
if (modalStack.current.length === 0) {
return null
}
const content = getCurrentContent()
const { overflow, keepOpen, fullScreen } = content.options || {}
const className = fullScreen ? 'fullscreen' : ''
return (
<Modal
onHide={keepOpen ? undefined : onClose} show={!!content}
className={className}
dialogClassName={className}
contentClassName={className}
>
<div className='d-flex flex-row'>
{overflow &&
<div className={'modal-btn modal-overflow ' + className}>
<ActionDropdown>
{overflow}
</ActionDropdown>
</div>}
{modalStack.current.length > 1 ? <div className='modal-btn modal-back' onClick={onBack}><BackArrow width={18} height={18} /></div> : null}
<div className={'modal-btn modal-close ' + className} onClick={onClose}>X</div>
</div>
<Modal.Body className={className}>
{content.node}
</Modal.Body>
</Modal>
)
}, [render])
const showModal = useCallback(
(getContent, options) => {
const ref = { node: getContent(onClose, setOptions), options }
if (options?.replaceModal) {
modalStack.current = [ref]
} else {
modalStack.current.push(ref)
}
forceUpdate()
},
[onClose]
)
return [modal, showModal]
}