Refactor inventorySelect to build it hierarchically

internal/ui/menus.go

@@ -0,0 +1,42 @@
+package ui
+
+import (
+	"code.ur.gs/lupine/ordoor/internal/menus"
+)
+
+func init() {
+	// These menu types don't need driving, so we can ignore them
+	registerBuilder(menus.TypeMenu, registerMenu)
+	registerBuilder(menus.TypeDragMenu, nil) // Menus are just containers
+}
+
+func registerMenu(d *Driver, r *menus.Record) ([]*menus.Record, error) {
+	// Group all inventory selects that share a menu together
+	var childrenLeft []*menus.Record
+	var inventorySelects []*inventorySelect
+
+	for _, child := range r.Children {
+		switch child.Type {
+		case menus.TypeInventorySelect:
+			is, err := registerInventorySelect(d, child)
+			if err != nil {
+				return nil, err
+			}
+
+			inventorySelects = append(inventorySelects, is)
+		default:
+			childrenLeft = append(childrenLeft, child)
+		}
+	}
+
+	if len(inventorySelects) > 0 {
+		inventorySelects[0].setValue("1") // Always start with one selected
+
+		for _, is := range inventorySelects {
+			is.others = inventorySelects
+		}
+	}
+
+	// Return all the unhandled children to be processed further
+	return childrenLeft, nil
+}