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Add context for iframe communicator in editor page (#1146)

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Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>
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Tilman Vatteroth 2021-04-03 12:59:14 +02:00 • committed by GitHub
parent 6e43ec99a3
commit af887877aa
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3 changed files with 58 additions and 27 deletions
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src/components/editor-page/render-context/iframe-communicator-context-provider.tsx Normal file
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/*
* SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
*
* SPDX-License-Identifier: AGPL-3.0-only
*/
import React, { useContext, useMemo } from 'react'
import { IframeEditorToRendererCommunicator } from '../../render-page/iframe-editor-to-renderer-communicator'
const IFrameEditorToRendererCommunicatorContext = React.createContext<IframeEditorToRendererCommunicator | undefined>(undefined)
export const useIFrameCommunicator: () => IframeEditorToRendererCommunicator | undefined = () => useContext(IFrameEditorToRendererCommunicatorContext)
export const useContextOrStandaloneIframeCommunicator: () => IframeEditorToRendererCommunicator = () => {
const contextCommunicator = useIFrameCommunicator()
return useMemo(() => contextCommunicator ? contextCommunicator : new IframeEditorToRendererCommunicator(), [contextCommunicator])
}
export const IframeCommunicatorContextProvider: React.FC = ({ children }) => {
const currentIFrameCommunicator = useMemo<IframeEditorToRendererCommunicator>(() => new IframeEditorToRendererCommunicator(), [])
return <IFrameEditorToRendererCommunicatorContext.Provider value={ currentIFrameCommunicator }>
{ children }
</IFrameEditorToRendererCommunicatorContext.Provider>
}