Navigation Bar

class MyApp extends App{
	
	createStartPage(){
		return HomePage
	}
	
	createLayout(pageContent){
		return Rows.backgroundColor(`skyblue`).children(
			pageContent.growShrink(1),
			Box.height(1).backgroundColor(`black`),
			Columns.padding(1).children(
				Space,
				Button.text(`🏠\nHome`).page(HomePage),
				Space,
				Button.text(`💡\nAbout`).page(AboutPage),
				Space,
				Button.text(`📞\nContact`).page(ContactPage),
				Space,
			),
		)
	}
	
}

class HomePage extends Page{
	createGui(){
		return a.createLayout(
			Text.text(`Home!`),
		)
	}
}

class AboutPage extends Page{
	createGui(){
		return a.createLayout(
			Text.text(`About!`),
		)
	}
}

class ContactPage extends Page{
	createGui(){
		return a.createLayout(
			Text.text(`Contact us!`),
		)
	}
}