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51 lines
1.5 KiB
TypeScript
51 lines
1.5 KiB
TypeScript
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import * as monaco from 'monaco-editor/esm/vs/editor/editor.api.js'
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import { LeanClient } from 'lean4web/client/src/editor/leanclient';
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import * as React from 'react';
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import { useState } from 'react';
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export class Connection {
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private leanClient = null
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getLeanClient(): LeanClient {
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if (this.leanClient === null) {
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const socketUrl = ((window.location.protocol === "https:") ? "wss://" : "ws://") + window.location.host + '/websocket/'
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const uri = monaco.Uri.parse('file:///')
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this.leanClient = new LeanClient(socketUrl, undefined, uri, () => {})
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}
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return this.leanClient
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}
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/** If not already started, starts the Lean client. resolves the returned promise as soon as a
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* Lean client is running.
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*/
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startLeanClient = () => {
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return new Promise<LeanClient>((resolve) => {
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const leanClient = this.getLeanClient()
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if (leanClient.isRunning()) {
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resolve(leanClient)
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} else {
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if (!leanClient.isStarted()) {
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leanClient.start()
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}
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leanClient.restarted(() => { resolve(leanClient) })
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}
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})
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}
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}
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export const connection = new Connection()
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export const ConnectionContext = React.createContext(null);
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export const useLeanClient = () => {
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const leanClient = connection.getLeanClient()
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const [leanClientStarted, setLeanClientStarted] = useState(leanClient.isStarted())
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leanClient.restarted(() => { setLeanClientStarted(true) })
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// TODO handle stopping lean client
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return {leanClientStarted, leanClient}
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}
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