Sandbox refactoring.

Author: MelvMay-Unity

LowLevel/Sandbox/Assets/Editor/SceneItemsPropertyDrawer.cs

@@ -0,0 +1,54 @@
+using System.Globalization;
+using System.Text.RegularExpressions;
+using UnityEditor.UIElements;
+using UnityEngine.UIElements;
+
+namespace UnityEditor
+{
+    [CustomPropertyDrawer(typeof(SceneManifest.SceneItem))]
+    internal sealed class SceneItemsPropertyDrawer : PropertyDrawer
+    {
+        public override VisualElement CreatePropertyGUI(SerializedProperty property)
+        {
+            var root = new VisualElement();
+
+            var foldout = new Foldout { text = property.displayName, value = false };
+            root.Add(foldout);
+
+            const string nameTypeName = nameof(SceneManifest.SceneItem.Name);
+            const string categoryTypeName = nameof(SceneManifest.SceneItem.Category);
+            const string descriptionTypeName = nameof(SceneManifest.SceneItem.Description);
+            const string scenePathTypeName = nameof(SceneManifest.SceneItem.ScenePath);
+
+            var nameProperty = property.FindPropertyRelative(nameTypeName);
+            var categoryProperty = property.FindPropertyRelative(categoryTypeName);
+            var descriptionProperty = property.FindPropertyRelative(descriptionTypeName);
+            var scenePathProperty = property.FindPropertyRelative(scenePathTypeName);
+
+            // Name.
+            var namePropertyField = new TextField { label = nameTypeName, bindingPath = nameProperty.propertyPath, enabledSelf = false }; 
+            foldout.Add(namePropertyField);
+            
+            // Category.
+            foldout.Add(new PropertyField(categoryProperty, categoryTypeName));
+            
+            // Description.
+            foldout.Add(new PropertyField(descriptionProperty, descriptionTypeName));
+
+            // Scene Path.
+            var scenePathPropertyField = new TextField { label = scenePathTypeName, bindingPath = scenePathProperty.propertyPath, enabledSelf = false };
+            foldout.Add(scenePathPropertyField);
+
+            // Provide the ability to drag a Unity Scene here.
+            var unitySceneField = new ObjectField("Unity Scene") { value = AssetDatabase.LoadAssetAtPath<SceneAsset>(scenePathProperty.stringValue) };
+            unitySceneField.RegisterValueChangedCallback(evt =>
+            {
+                namePropertyField.value = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(Regex.Replace(evt.newValue.name, "(\\B[A-Z])", " $1"));
+                scenePathPropertyField.value = AssetDatabase.GetAssetPath(evt.newValue);
+            });
+            foldout.Add(unitySceneField);
+            
+            return root;
+        }
+    }
+}