Add a partial listbox implementation

internal/ui/menus.go

@@ -11,11 +11,42 @@ func init() {
 }
 
 func registerMenu(d *Driver, r *menus.Record) ([]*menus.Record, error) {
-	// Group all inventory selects that share a menu together
+	childrenLeft, err := listBoxFromMenu(d, r, r.Children)
+	if err != nil {
+		return nil, err
+	}
+
+	childrenLeft, err = inventorySelectFromMenu(d, r, childrenLeft)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return all the unhandled children to be processed further
+	return childrenLeft, nil
+}
+
+func listBoxFromMenu(d *Driver, menu *menus.Record, children []*menus.Record) ([]*menus.Record, error) {
+	ok := false
+	for _, rec := range children {
+		if rec.Type == menus.TypeThumb { // FIXME: we're using this to indicate a listbox
+			ok = true
+			break
+		}
+	}
+
+	if !ok {
+		return children, nil
+	}
+
+	return registerListBox(d, menu)
+}
+
+// Group all inventory selects that share a menu together
+func inventorySelectFromMenu(d *Driver, menu *menus.Record, children []*menus.Record) ([]*menus.Record, error) {
 	var childrenLeft []*menus.Record
 	var inventorySelects []*inventorySelect
 
-	for _, child := range r.Children {
+	for _, child := range children {
 		switch child.Type {
 		case menus.TypeInventorySelect:
 			is, err := registerInventorySelect(d, child)
@@ -37,6 +68,5 @@ func registerMenu(d *Driver, r *menus.Record) ([]*menus.Record, error) {
 		}
 	}
 
-	// Return all the unhandled children to be processed further
 	return childrenLeft, nil
 }