class ViewControllerContainer extends View {
	/**
	 * The build function is called in the constructor when no element was passed as the base.
	 * Override it to create custom subviews or manipulate the root element.
	 * Don't forget to return the element in the end!
	 */
	build(element) {
		return element;
	}

	/**
	 * Called once the view has been processed by UIKit during the view controller initialization.
	 */
	viewDidLoad() {
		if (this.viewController) {
			this.viewController.viewDidLoad();
		}
	}

	/**
	 * Called everytime before the view is shown.
	 * The layout is already done at this step, so it's safe to use scrollWidth and scrollHeight and what not.
	 */
	viewWillAppear() {
		if (this.viewController) {
			this.viewController.viewWillAppear();
			this.viewController.subviewsWillAppear();
		}
	}

	/**
	 * Called everytime after the view is shown.
	 */
	viewDidAppear() {
		if (this.viewController) {
			this.viewController.viewDidAppear();
			this.viewController.subviewsDidAppear();
		}
	}

	/**
	 * Called everytime before the view is hidden.
	 */
	viewWillDisappear() {
		if (this.viewController) {
			this.viewController.viewWillDisappear();
			this.viewController.subviewsWillDisappear();
		}
	}

	/**
	 * Called everytime after the view is hidden.
	 */
	viewDidDisappear() {
		if (this.viewController) {
			this.viewController.viewDidDisappear();
			this.viewController.subviewsDidDisappear();
		}
	}

	setViewController(viewController) {
		this.viewController = viewController;
		this.element.appendChild(viewController.element);
		this.viewController.viewDidLoad();
		this.viewController.viewWillAppear();
		this.viewController.viewDidAppear();
	}
}

UIKit.registerViewType(ViewControllerContainer);