init

src/SceneBuilder/InspectorEnumField.cs

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+using System;
+using Godot;
+
+namespace Cthangover.Core.UI.Tool.SceneBuilder
+{
+    /// <summary>
+    /// OptionButton-based editor for enum-valued properties (grow direction,
+    /// mouse filter, ...). Maps the selected list index back to the stored
+    /// numeric value from <see cref="InspectableProperty.EnumValues"/>; unknown
+    /// current values leave the dropdown unselected instead of lying about state.
+    /// </summary>
+    public partial class InspectorEnumField : OptionButton
+    {
+        public event Action<string, long> Committed;
+
+        private InspectableProperty _property;
+
+        public void Setup(InspectableProperty property, long currentValue)
+        {
+            _property = property;
+            SizeFlagsHorizontal = Control.SizeFlags.ExpandFill;
+
+            for (var i = 0; i < property.EnumLabels.Length; i++)
+                AddItem(property.EnumLabels[i]);
+
+            Selected = IndexOfValue(currentValue);
+            ItemSelected += OnItemSelected;
+        }
+
+        private int IndexOfValue(long value)
+        {
+            if (_property.EnumValues == null)
+                return -1;
+            for (var i = 0; i < _property.EnumValues.Length; i++)
+            {
+                if (_property.EnumValues[i] == value)
+                    return i;
+            }
+            return -1;
+        }
+
+        private void OnItemSelected(long index)
+        {
+            if (_property.EnumValues != null && index >= 0 && index < _property.EnumValues.Length)
+                Committed?.Invoke(_property.Key, _property.EnumValues[index]);
+        }
+    }
+}