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3c01402bbd
PDF Detach v2 GitOrigin-RevId: 3deb76474185f9176cde23ab32ef51b90df6e8e9
62 lines
1.4 KiB
JavaScript
62 lines
1.4 KiB
JavaScript
import { useEffect, useState, useCallback } from 'react'
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import { useDetachContext } from '../context/detach-context'
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import getMeta from '../../utils/meta'
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const debugPdfDetach = getMeta('ol-debugPdfDetach')
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export default function useDetachState(
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key,
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defaultValue,
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senderRole,
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targetRole
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) {
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const [value, setValue] = useState(defaultValue)
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const {
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role,
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broadcastEvent,
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lastDetachedConnectedAt,
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addEventHandler,
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deleteEventHandler,
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} = useDetachContext()
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const eventName = `state-${key}`
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// lastDetachedConnectedAt is added as a dependency in order to re-broadcast
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// all states when a new detached tab connects
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useEffect(() => {
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if (role === senderRole) {
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broadcastEvent(eventName, { value })
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}
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}, [
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role,
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senderRole,
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eventName,
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value,
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broadcastEvent,
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lastDetachedConnectedAt,
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])
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const handleStateEvent = useCallback(
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message => {
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if (message.event !== eventName) {
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return
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}
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if (role !== targetRole) {
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return
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}
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if (debugPdfDetach) {
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console.log(`Set ${message.data.value} for ${eventName}`)
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}
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setValue(message.data.value)
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},
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[role, targetRole, eventName, setValue]
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)
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useEffect(() => {
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addEventHandler(handleStateEvent)
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return () => deleteEventHandler(handleStateEvent)
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}, [addEventHandler, deleteEventHandler, handleStateEvent])
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return [value, setValue]
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}
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