Add inline fix for validation messages

Editor.Samples/Validators/Validators_ValidateInputSample.cs

@@ -6,10 +6,24 @@ public class Validators_ValidateInputSample : ScriptableObject
     [ValidateInput(nameof(ValidateTexture))]
     public Texture tex;
 
+    [ValidateInput(nameof(ValidateNumber))]
+    public int number;
+
     private TriValidationResult ValidateTexture()
     {
         if (tex == null) return TriValidationResult.Error("Tex is null");
         if (!tex.isReadable) return TriValidationResult.Warning("Tex must be readable");
         return TriValidationResult.Valid;
     }
+
+    private TriValidationResult ValidateNumber()
+    {
+        if (number == 1)
+        {
+            return TriValidationResult.Valid;
+        }
+
+        return TriValidationResult.Error("Number must be equal 1")
+            .WithFix(() => number = 1, "Set to 1");
+    }
 }

Editor/Elements/TriInfoBoxElement.cs

@@ -1,4 +1,5 @@
-using TriInspector.Utilities;
+using System;
+using TriInspector.Utilities;
 using TriInspectorUnityInternalBridge;
 using UnityEditor;
 using UnityEngine;
@@ -7,22 +8,44 @@ namespace TriInspector.Elements
 {
     public class TriInfoBoxElement : TriElement
     {
+        private const int ActionSpacing = 5;
+        private const int ActionWidth = 100;
+        private const int ActionWidthWithSpacing = ActionWidth + ActionSpacing * 2;
+
         private readonly GUIContent _message;
         private readonly Texture2D _icon;
         private readonly Color _color;
+        private readonly Action _inlineAction;
+        private readonly GUIContent _inlineActionContent;
 
-        public TriInfoBoxElement(string message, TriMessageType type = TriMessageType.None, Color? color = null)
+        public TriInfoBoxElement(string message, TriMessageType type = TriMessageType.None, Color? color = null,
+            Action inlineAction = null, GUIContent inlineActionContent = null)
         {
             var messageType = GetMessageType(type);
             _icon = EditorGUIUtilityProxy.GetHelpIcon(messageType);
             _message = new GUIContent(message);
             _color = color ?? GetColor(type);
+            _inlineAction = inlineAction;
+            _inlineActionContent = inlineActionContent ?? GUIContent.none;
         }
 
         public override float GetHeight(float width)
         {
+            var labelWidth = width;
+
+            if (_inlineAction != null)
+            {
+                labelWidth -= ActionWidthWithSpacing;
+            }
+
             var style = _icon == null ? Styles.InfoBoxContentNone : Styles.InfoBoxContent;
-            var height = style.CalcHeight(_message, width);
+            var height = style.CalcHeight(_message, labelWidth);
+
+            if (_inlineAction != null)
+            {
+                height = Mathf.Max(height, CalcActionHeight() + ActionSpacing * 2);
+            }
+
             return Mathf.Max(26, height);
         }
 
@@ -33,21 +56,57 @@ namespace TriInspector.Elements
                 GUI.Label(position, string.Empty, Styles.InfoBoxBg);
             }
 
+            var labelWidth = position.width;
+
+            if (_inlineAction != null)
+            {
+                labelWidth -= ActionWidthWithSpacing;
+            }
+
             if (_icon != null)
             {
+                var labelRect = new Rect(position)
+                {
+                    width = labelWidth,
+                };
+
                 var iconRect = new Rect(position)
                 {
                     xMin = position.xMin + 4,
                     width = 20,
                 };
 
-                GUI.Label(position, _message, Styles.InfoBoxContent);
+                GUI.Label(labelRect, _message, Styles.InfoBoxContent);
                 GUI.DrawTexture(iconRect, _icon, ScaleMode.ScaleToFit);
             }
             else
             {
                 GUI.Label(position, _message, Styles.InfoBoxContentNone);
             }
+
+            if (_inlineAction != null)
+            {
+                var fixHeight = CalcActionHeight();
+
+                var actionRect = new Rect(position)
+                {
+                    xMax = position.xMax - ActionSpacing,
+                    xMin = position.xMax - ActionWidth - ActionSpacing,
+                    yMin = position.center.y - fixHeight / 2,
+                    yMax = position.center.y + fixHeight / 2,
+                };
+
+                if (GUI.Button(actionRect, _inlineActionContent, Styles.InfoBoxInlineAction))
+                {
+                    _inlineAction?.Invoke();
+                }
+            }
+        }
+
+
+        private float CalcActionHeight()
+        {
+            return Styles.InfoBoxInlineAction.CalcHeight(_inlineActionContent, ActionWidth);
         }
 
         private static Color GetColor(TriMessageType type)
@@ -82,6 +141,7 @@ namespace TriInspector.Elements
             public static readonly GUIStyle InfoBoxBg;
             public static readonly GUIStyle InfoBoxContent;
             public static readonly GUIStyle InfoBoxContentNone;
+            public static readonly GUIStyle InfoBoxInlineAction;
 
             static Styles()
             {
@@ -97,6 +157,10 @@ namespace TriInspector.Elements
                 {
                     padding = new RectOffset(26, 4, 4, 4),
                 };
+                InfoBoxInlineAction = new GUIStyle(GUI.skin.button)
+                {
+                    wordWrap = true,
+                };
             }
         }
     }

Editor/ValidatorsDrawer.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using TriInspector.Elements;
 using UnityEditor;
 
@@ -61,11 +62,22 @@ namespace TriInspector
 
                 foreach (var result in _validationResults)
                 {
-                    AddChild(new TriInfoBoxElement(result.Message, result.MessageType));
+                    var infoBox = result.FixAction != null
+                        ? new TriInfoBoxElement(result.Message, result.MessageType,
+                            inlineAction: () => ExecuteFix(result.FixAction),
+                            inlineActionContent: result.FixActionContent)
+                        : new TriInfoBoxElement(result.Message, result.MessageType);
+
+                    AddChild(infoBox);
                 }
 
                 return true;
             }
+
+            private void ExecuteFix(Action fixAction)
+            {
+                _property.ModifyAndRecordForUndo(targetIndex => fixAction?.Invoke());
+            }
         }
     }
 }

Runtime/TriValidationResult.cs

@@ -1,25 +1,38 @@
-namespace TriInspector
+using System;
+using UnityEngine;
+
+namespace TriInspector
 {
     public readonly struct TriValidationResult
     {
         public static TriValidationResult Valid => new TriValidationResult(true, null, TriMessageType.None);
 
-        public TriValidationResult(bool valid, string message, TriMessageType messageType)
+        public TriValidationResult(bool valid, string message, TriMessageType messageType,
+            Action fixAction = null, GUIContent fixActionContent = null)
         {
             IsValid = valid;
             Message = message;
             MessageType = messageType;
+            FixAction = fixAction;
+            FixActionContent = fixActionContent;
         }
 
         public bool IsValid { get; }
         public string Message { get; }
         public TriMessageType MessageType { get; }
+        public Action FixAction { get; }
+        public GUIContent FixActionContent { get; }
+
+        public TriValidationResult WithFix(Action action, string name = null)
+        {
+            return new TriValidationResult(IsValid, Message, MessageType, action, new GUIContent(name));
+        }
 
         public static TriValidationResult Info(string error)
         {
             return new TriValidationResult(false, error, TriMessageType.Info);
         }
-        
+
         public static TriValidationResult Error(string error)
         {
             return new TriValidationResult(false, error, TriMessageType.Error);