1.8.3: Added HideLabel attribute

Editor/AbstractPropertyDrawer.cs

@@ -35,7 +35,7 @@ namespace Module.Inspector.Editor
                 if (value.drawer.Validate(value.attribute, property))
                     continue;
 
-                validationError += value.drawer.GetValidationError(property);
+                validationError += value.drawer.GetValidationError(value.attribute, property);
                 isValid = false;
             }
             
@@ -48,7 +48,7 @@ namespace Module.Inspector.Editor
                 else
                     label.tooltip += "\n" + validationError;
 
-                GUI.color = Color.red;
+                EditorIcons.SetErrorIcon(label);
             }
 
             if (result.draw != null)

Editor/Predrawers/HideLabelAttributeDrawer.cs

@@ -0,0 +1,14 @@
+using UnityEditor;
+using UnityEngine;
+
+namespace Module.Inspector.Editor
+{
+    [CustomPropertyDrawer(typeof(HideLabelAttribute))]
+    internal sealed class HideLabelAttributeDrawer : PredrawerModifierPropertyDrawer
+    {
+        public override void Modify(PredrawerModifierPropertyAttribute attribute, SerializedProperty property, GUIContent label)
+        {
+            label.text = string.Empty;
+        }
+    }
+}

Editor/Predrawers/HideLabelAttributeDrawer.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: df07b497331149cfb8ce6e544247cb9f
+timeCreated: 1699115325

Editor/Utilities/EditorIcons.cs

@@ -0,0 +1,39 @@
+using UnityEditor;
+using UnityEngine;
+
+namespace Module.Inspector.Editor.Utilities
+{
+    internal static class EditorIcons
+    {
+        private static GUIContent CONTENT_WARNING;
+        private static GUIContent CONTENT_ERROR;
+
+        private static GUIContent GetWarningIconContent()
+        {
+            if (CONTENT_WARNING == null)
+                CONTENT_WARNING = EditorGUIUtility.IconContent("Warning");
+            
+            return CONTENT_WARNING;
+        }
+
+        private static GUIContent GetErrorIconContent()
+        {
+            if (CONTENT_ERROR == null)
+                CONTENT_ERROR = EditorGUIUtility.IconContent("Error");
+            
+            return CONTENT_ERROR;
+        }
+
+        public static void SetWarningIcon(GUIContent content)
+        {
+            GUIContent errorContent = GetWarningIconContent();
+            content.image = errorContent.image;
+        }
+        
+        public static void SetErrorIcon(GUIContent content)
+        {
+            GUIContent errorContent = GetErrorIconContent();
+            content.image = errorContent.image;
+        }
+    }
+}

Editor/Utilities/EditorIcons.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 07b74dac541c43cb8a89bd0a1b577ec1
+timeCreated: 1699115532

Editor/ValidatePropertyDrawer.cs

@@ -5,6 +5,6 @@ namespace Module.Inspector.Editor
     public abstract class ValidatePropertyDrawer : AbstractPropertyDrawer
     {
         public abstract bool Validate(ValidatePropertyAttribute attribute, SerializedProperty property);
-        public abstract string GetValidationError(SerializedProperty property);
+        public abstract string GetValidationError(ValidatePropertyAttribute attribute, SerializedProperty property);
     }
 }

Editor/Validators/NotNullFieldAttributeDrawer.cs

@@ -42,9 +42,14 @@ namespace Module.Inspector.Editor
             return true;
         }
 
-        public override string GetValidationError(SerializedProperty property)
+        public override string GetValidationError(ValidatePropertyAttribute attribute, SerializedProperty property)
         {
-            return "NotNullField: Value is null";
+            string errorMessage = ((NotNullFieldAttribute)attribute).errorMessage;
+
+            if (string.IsNullOrEmpty(errorMessage))
+                return "NotNullField: Value is null";
+
+            return errorMessage;
         }
     }
 }

README.md

@@ -66,7 +66,8 @@ List of all available pre-drawer attributes:
     * Sets GUIContent label for `SerializedProperty` to value from another field
 * `FieldLabelFromType`
     * Sets GUIContent label for `SerializedProperty` to value type from another field
-
+* `HideLabel`
+    * Sets GUIContent label for `SerializedProperty` to empty string 
 
 
 ## Drawer

Runtime/Predrawers/HideLabelAttribute.cs

@@ -0,0 +1,14 @@
+using System;
+using UnityEngine.Scripting;
+
+namespace Module.Inspector
+{
+    [AttributeUsage(AttributeTargets.Field, AllowMultiple = false, Inherited = true)]
+    public sealed class HideLabelAttribute : PredrawerModifierPropertyAttribute
+    {
+        [Preserve]
+        public HideLabelAttribute()
+        {
+        }
+    }
+}

Runtime/Predrawers/HideLabelAttribute.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 5f5c299642f040cabf74fd751c38e7ce
+timeCreated: 1699115292

Runtime/Validators/NotNullFieldAttribute.cs

@@ -6,9 +6,16 @@ namespace Module.Inspector
     [AttributeUsage(AttributeTargets.Field, AllowMultiple = false, Inherited = true)]
     public class NotNullFieldAttribute : ValidatePropertyAttribute
     {
+        public readonly string errorMessage;
+        
         [Preserve]
         public NotNullFieldAttribute()
         {
         }
+
+        public NotNullFieldAttribute(string errorMessage)
+        {
+            this.errorMessage = errorMessage;
+        }
     }
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.module.inspector",
-  "version": "1.8.2",
+  "version": "1.8.3",
   "displayName": "Module.Inspector",
   "description": "Custom inspector with various useful property drawers",
   "unity": "2019.2",