package door

import "bytes"

type Screen struct {
	Panels []Panel
}

func (s *Screen) AddPanel(panel Panel) {
	s.Panels = append(s.Panels, panel)
}

func (s *Screen) Output() []byte {
	var result bytes.Buffer
	for idx := range s.Panels {
		result.Write(s.Panels[idx].Output())
	}
	return result.Bytes()
}

func (s *Screen) Update() []byte {
	var result bytes.Buffer
	for idx := range s.Panels {
		result.Write(s.Panels[idx].Update())
	}
	return result.Bytes()
}