Add a partial listbox implementation

internal/ui/noninteractive.go

@@ -46,6 +46,11 @@ type animationHover struct {
 }
 
 func registerStatic(d *Driver, r *menus.Record) error {
+	_, err := registerNoninteractive(d, r)
+	return err
+}
+
+func registerNoninteractive(d *Driver, r *menus.Record) (*noninteractive, error) {
 	// FIXME: SpriteID takes precedence over SHARE if present, but is that right?
 	spriteId := r.Share
 	if len(r.SpriteId) > 0 && r.SpriteId[0] != -1 {
@@ -54,7 +59,7 @@ func registerStatic(d *Driver, r *menus.Record) error {
 
 	sprite, err := d.menu.Sprite(spriteId)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	ni := &noninteractive{
@@ -67,7 +72,7 @@ func registerStatic(d *Driver, r *menus.Record) error {
 	d.hoverables = append(d.hoverables, ni)
 	d.paintables = append(d.paintables, ni)
 
-	return nil
+	return ni, nil
 }
 
 func registerHypertext(d *Driver, r *menus.Record) error {