Renamed all attributes and drawers to have postfix of either Attribute or AttributeDrawer

Editor/Drawers/PopupFromConstAttributeDrawer.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Linq;
+using System.Reflection;
+using Module.Inspector.Editor.Utilities;
+using UnityEditor;
+using UnityEngine;
+
+namespace Module.Inspector.Editor
+{
+    [CustomPropertyDrawer(typeof(PopupFromConstAttribute))]
+    internal sealed class PopupFromConstAttributeDrawer : DrawerPropertyDrawer
+    {
+        private GUIContent[] names;
+        private string[] values;
+        
+        public override bool Draw(Rect position, DrawerPropertyAttribute attribute, SerializedProperty property, GUIContent label, EditorPropertyUtility.Result result)
+        {
+            if (property.propertyType != SerializedPropertyType.String)
+                return false;
+            
+            var att = (PopupFromConstAttribute)attribute;
+            FetchConstArray(att);
+                
+            EditorGUI.BeginChangeCheck();
+            EditorGUI.BeginProperty(position, label, property);
+            {
+                int index = Array.IndexOf(values, property.stringValue);
+                int newIndex = EditorGUI.Popup(position, label, index, names);
+
+                if (newIndex != -1 && index != newIndex)
+                    property.stringValue = values[newIndex];
+            }
+            EditorGUI.EndProperty();
+            bool changed = EditorGUI.EndChangeCheck();
+
+            if (changed)
+                property.serializedObject.ApplyModifiedProperties();
+            
+            return true;
+        }
+        
+        public override string GetErrorMessage(SerializedProperty property)
+        {
+            return "Only supports integers";
+        }
+
+        private void FetchConstArray(PopupFromConstAttribute attribute)
+        {
+            if (names != null)
+                return;
+
+            FieldInfo[] fields = attribute.type.GetFields(BindingFlags.Public | BindingFlags.Static | BindingFlags.FlattenHierarchy)
+                                          .Where(fi => fi.IsLiteral && !fi.IsInitOnly && fi.FieldType == typeof(string))
+                                          .ToArray();
+
+            names = new GUIContent[fields.Length + 1];
+            values = new string[fields.Length + 1];
+            
+            names[0] = new GUIContent("-- Empty --");
+            values[0] = string.Empty;
+
+            for (var i = 0; i < fields.Length; i++)
+            {
+                FieldInfo fi = fields[i];
+                var value = (string)fi.GetValue(null);
+                
+                names[i + 1] = new GUIContent(value);
+                values[i + 1] = value;
+            }
+        }
+    }
+}