How to approach text entry prompt?

[red-moss2]

I'm protoyping a text input prompt as a means of getting familiar with tcell and want to know if I'm approaching this the best way. I've just posted the main function for brevity which should be sufficient to demonstrate, I hope. Key points:

• Store user input in a slice of runes (buffer). I append to the buffer with each tcell.KeyRune press to pick up the keyboard. The buffer gets cleared down on entry, although I will of course add a line that consumes it first before doing so.
• The contents of the buffer before enter key is pressed gets output to the screen each keypress so the user can see what they type. I am clearing the prompt by overwriting the input line with a long line of space characters which feels hacky, but I'm not sure how else to do so.
• On resize, redraw the screen. drawUI prints out the input prompt ? and a header/footer.

Is there anything with the below that looks bad or any reccomendations?

func main() {
	var buffer []rune
	logger := initLogging()
	screen := initScreen(defStyle, logger)
	defer quit(&screen)

	screen.Clear()
	screen.HideCursor()

	drawUI(&screen)

	for {
		// Update screen
		screen.Show()

		// Poll for events
		ev := screen.PollEvent()

		// Process events
		switch ev := ev.(type) {
		case *tcell.EventResize:
			drawUI(&screen)
			screen.Sync()
		case *tcell.EventKey:
			if ev.Key() == tcell.KeyRune {
				buffer = append(buffer, ev.Rune())
				drawText(screen, 3, ScreenHeight-3, defStyle, string(buffer)+"_")
			} else if ev.Key() == tcell.KeyEnter {
				buffer = []rune{}
				drawText(screen, 3, ScreenHeight-3, defStyle, "_"+generateEmptyString(ScreenWidth))
			} else if ev.Key() == tcell.KeyCtrlL {
				screen.Sync()
			} else if ev.Key() == tcell.KeyCtrlC {
				return
			}
		}
	}
}