added more utilty packges

Packages/com.jovian.inspector/Editor/Attributes/AttributeBaseDrawer.cs

@@ -0,0 +1,62 @@
+#if UNITY_EDITOR
+using System.Linq;
+using UnityEditor;
+using UnityEngine;
+
+namespace InspectorToolkit.Internal
+{
+	[CustomPropertyDrawer(typeof(AttributeBase), true)]
+	public class AttributeBaseDrawer : PropertyDrawer
+	{
+		private AttributeBase[] _cachedAttributes;
+
+		public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
+		{
+			CacheAttributes();
+
+			for (var i = _cachedAttributes.Length - 1; i >= 0; i--)
+			{
+				var overriden = _cachedAttributes[i].OverrideHeight();
+				if (overriden != null) return overriden.Value;
+			}
+			
+			return base.GetPropertyHeight(property, label);
+		}
+
+		public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+		{
+			CacheAttributes();
+
+			bool drawn = false;
+			for (var i = _cachedAttributes.Length - 1; i >= 0; i--)
+			{
+				var ab = _cachedAttributes[i];
+				ab.ValidateProperty(property);
+				
+				ab.OnBeforeGUI(position, property, label);
+
+				// Draw the things with higher priority first. If drawn once - skip drawing
+				if (!drawn)
+				{
+					if (ab.OnGUI(position, property, label)) drawn = true;
+				}
+				
+				ab.OnAfterGUI(position, property, label);
+			}
+
+			if (!drawn) EditorGUI.PropertyField(position, property, label);
+		}
+
+		private void CacheAttributes()
+		{
+			if (_cachedAttributes.IsNullOrEmpty())
+			{
+				_cachedAttributes = fieldInfo
+					.GetCustomAttributes(typeof(AttributeBase), false)
+					.OrderBy(s => ((PropertyAttribute) s).order)
+					.Select(a => a as AttributeBase).ToArray();
+			}
+		}
+	}
+}
+#endif