package door

// This was the way I did it in door++...
// Don't
/*
type RenderOutput struct {
	Color string
	Pos   int
	Len   int
}

type Render struct {
	Text    string
	Outputs []RenderOutput
}
*/

type Line struct {
	Text         string
	DefaultColor string
	RenderF      func(string) string
	UpdateF      func() string
}

func (l *Line) Update() bool {
	if l.UpdateF == nil {
		return false
	}
	NewText := l.UpdateF()
	if NewText != l.Text {
		l.Text = NewText
		return true
	}
	return false
}

func (l *Line) Output(d *Door) {
	if l.RenderF == nil {
		output := l.DefaultColor + l.Text
		d.Write(output)
	} else {
		output := l.RenderF(l.Text)
		d.Write(output)
	}
}