vscode-extension-samples/contentprovider-sample/src/extension.ts

/*---------------------------------------------------------
 * Copyright (C) Microsoft Corporation. All rights reserved.
 *--------------------------------------------------------*/

import { workspace, languages, window, commands, ExtensionContext, Disposable } from 'vscode';
import ContentProvider, { encodeLocation } from './provider';

export function activate(context: ExtensionContext) {

	const provider = new ContentProvider();

	// register content provider for scheme `references`
	// register document link provider for scheme `references`
	const providerRegistrations = Disposable.from(
		workspace.registerTextDocumentContentProvider(ContentProvider.scheme, provider),
		languages.registerDocumentLinkProvider({ scheme: ContentProvider.scheme }, provider)
	);

	// register command that crafts an uri with the `references` scheme,
	// open the dynamic document, and shows it in the next editor
	const commandRegistration = commands.registerTextEditorCommand('editor.printReferences', editor => {
		const uri = encodeLocation(editor.document.uri, editor.selection.active);
		return workspace.openTextDocument(uri).then(doc => window.showTextDocument(doc, editor.viewColumn! + 1));
	});

	context.subscriptions.push(
		provider,
		commandRegistration,
		providerRegistrations
	);
}