package views

import "git.milar.in/milarin/tui"

// FrameView is a tui.Wrapper which draws its view preferably with preferred size on its tui.Anchor point
type FrameView struct {
	tui.WrapperTmpl
	Anchor tui.Anchor

	DontClearBuffer bool
}

var _ tui.Wrapper = &FrameView{}

func NewFrameView(view tui.View) *FrameView {
	v := new(FrameView)
	v.SetView(view)
	v.Anchor = tui.AnchorCenter
	return v
}

func (g *FrameView) Draw(buf *tui.ViewBuffer) {
	if !g.DontClearBuffer {
		g.ViewTmpl.Draw(buf)
	}

	w, h := g.View().Layout()
	w = iff(w >= 0, w, buf.Width())
	h = iff(h >= 0, h, buf.Height())
	g.View().Draw(tui.ConstrainBufferToAnchor(buf, g.Anchor, w, h))
}

func (v *FrameView) Layout() (prefWidth, prefHeight int) {
	return -1, -1
}