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feat(window post message communicator): Use EventEmitter2

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Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>
This commit is contained in:
Tilman Vatteroth 2022-09-26 16:23:45 +02:00
parent 3b9cfdf487
commit 883f868399
5 changed files with 38 additions and 28 deletions
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13
src/components/render-page/window-post-message-communicator/hooks/use-editor-receive-handler.ts
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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
* SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
*
* SPDX-License-Identifier: AGPL-3.0-only
*/
@ -7,7 +7,7 @@
import { useEffect } from 'react'
import type { CommunicationMessages, RendererToEditorMessageType } from '../rendering-message'
import { useEditorToRendererCommunicator } from '../../../editor-page/render-context/editor-to-renderer-communicator-context-provider'
import type { MaybeHandler } from '../window-post-message-communicator'
import type { Handler } from '../window-post-message-communicator'
/**
* Sets the handler for the given message type in the current editor to renderer communicator.
@ -17,13 +17,14 @@ import type { MaybeHandler } from '../window-post-message-communicator'
*/
export const useEditorReceiveHandler = <R extends RendererToEditorMessageType>(
messageType: R,
handler: MaybeHandler<CommunicationMessages, R>
handler?: Handler<CommunicationMessages, R>
): void => {
const editorToRendererCommunicator = useEditorToRendererCommunicator()
useEffect(() => {
editorToRendererCommunicator.setHandler(messageType, handler)
return () => {
editorToRendererCommunicator.setHandler(messageType, undefined)
if (!handler) {
return
}
editorToRendererCommunicator.on(messageType, handler)
return () => editorToRendererCommunicator.off(messageType, handler)
}, [editorToRendererCommunicator, handler, messageType])
}