Move SQL 2019 extension's notebook code into Azure Data Studio (#4090)

extensions/notebook/src/prompts/checkbox.ts

@@ -0,0 +1,52 @@
+'use strict';
+
+// This code is originally from https://github.com/DonJayamanne/bowerVSCode
+// License: https://github.com/DonJayamanne/bowerVSCode/blob/master/LICENSE
+
+import { window } from 'vscode';
+import Prompt from './prompt';
+import EscapeException from './escapeException';
+
+const figures = require('figures');
+
+export default class CheckboxPrompt extends Prompt {
+
+	constructor(question: any, ignoreFocusOut?: boolean) {
+		super(question, ignoreFocusOut);
+	}
+
+	public render(): any {
+		let choices = this._question.choices.reduce((result, choice) => {
+			let choiceName = choice.name || choice;
+			result[`${choice.checked === true ? figures.radioOn : figures.radioOff} ${choiceName}`] = choice;
+			return result;
+		}, {});
+
+		let options = this.defaultQuickPickOptions;
+		options.placeHolder = this._question.message;
+
+		let quickPickOptions = Object.keys(choices);
+		quickPickOptions.push(figures.tick);
+
+		return window.showQuickPick(quickPickOptions, options)
+			.then(result => {
+				if (result === undefined) {
+					throw new EscapeException();
+				}
+
+				if (result !== figures.tick) {
+					choices[result].checked = !choices[result].checked;
+
+					return this.render();
+				}
+
+				return this._question.choices.reduce((result2, choice) => {
+					if (choice.checked === true) {
+						result2.push(choice.value);
+					}
+
+					return result2;
+				}, []);
+			});
+	}
+}