typescript source code of SoundPlayerProvider

import { CustomReadonlyEditorProvider, ExtensionContext, Uri, WebviewPanel } from 'vscode'
import { SoundPlayerDocument } from './SoundPlayerDocument'
import { GetWebviewContent } from './Util'

export class SoundPlayerProvider implements CustomReadonlyEditorProvider<SoundPlayerDocument> {

    private html: Promise<string>

    constructor(context: ExtensionContext) {
        this.html = GetWebviewContent(context.asAbsolutePath('public'))
    }

    openCustomDocument(uri: Uri): SoundPlayerDocument {
        return new SoundPlayerDocument(uri)
    }

    async resolveCustomEditor(document: SoundPlayerDocument, webviewPanel: WebviewPanel): Promise<void> {
        webviewPanel.webview.options = {
            enableScripts: true
        }
        const html = await this.html
        webviewPanel.webview.html = html
        const result = await document.parseResult
        webviewPanel.webview.postMessage(result)
    }
}