src/vs/editor/standalone/browser/iPadShowKeyboard/iPadShowKeyboard.ts/ShowKeyboardWidget/constructor
class ShowKeyboardWidget:	constructor(editor: ICodeEditor) {
		super();
		this.editor = editor;
		this._domNode = document.createElement('textarea');
		this._domNode.className = 'iPadShowKeyboard';

		this._register(dom.addDisposableListener(this._domNode, 'touchstart', (e) => {
			this.editor.focus();
		}));
		this._register(dom.addDisposableListener(this._domNode, 'focus', (e) => {
			this.editor.focus();
		}));

		this.editor.addOverlayWidget(this);
	}