Add drawer for Button with parameters

Author: vanifatovvlad

Editor.Extras/Drawers/ButtonDrawer.cs

@@ -2,7 +2,9 @@
 using System.Reflection;
 using TriInspector;
 using TriInspector.Drawers;
+using TriInspector.Elements;
 using TriInspector.Resolvers;
+using TriInspector.Utilities;
 using UnityEditor;
 using UnityEngine;
 
@@ -16,12 +18,10 @@ public class ButtonDrawer : TriAttributeDrawer<ButtonAttribute>
 
         public override TriExtensionInitializationResult Initialize(TriPropertyDefinition propertyDefinition)
         {
-            var isValidMethod = propertyDefinition.TryGetMemberInfo(out var memberInfo) &&
-                                memberInfo is MethodInfo mi &&
-                                mi.GetParameters().Length == 0;
+            var isValidMethod = propertyDefinition.TryGetMemberInfo(out var memberInfo) && memberInfo is MethodInfo;
             if (!isValidMethod)
             {
-                return "[Button] valid only on methods without parameters";
+                return "[Button] valid only on methods";
             }
 
             _nameResolver = ValueResolver.ResolveString(propertyDefinition, Attribute.Name);
@@ -33,33 +33,94 @@ memberInfo is MethodInfo mi &&
             return TriExtensionInitializationResult.Ok;
         }
 
-        public override float GetHeight(float width, TriProperty property, TriElement next)
+        public override TriElement CreateElement(TriProperty property, TriElement next)
         {
-            if (Attribute.ButtonSize != 0)
-            {
-                return Attribute.ButtonSize;
-            }
-
-            return EditorGUIUtility.singleLineHeight;
+            return new TriButtonElement(property, Attribute, _nameResolver);
         }
 
-        public override void OnGUI(Rect position, TriProperty property, TriElement next)
+        private class TriButtonElement : TriHeaderGroupBaseElement
         {
-            var name = _nameResolver.GetValue(property);
+            private readonly TriProperty _property;
+            private readonly ButtonAttribute _attribute;
+            private readonly ValueResolver<string> _nameResolver;
+            private readonly object[] _invocationArgs;
 
-            if (string.IsNullOrEmpty(name))
+            public TriButtonElement(TriProperty property, ButtonAttribute attribute,
+                ValueResolver<string> nameResolver)
             {
-                name = property.DisplayName;
+                _property = property;
+                _attribute = attribute;
+                _nameResolver = nameResolver;
+
+                var mi = property.TryGetMemberInfo(out var memberInfo)
+                    ? (MethodInfo) memberInfo
+                    : throw new Exception("TriButtonElement requires MethodInfo");
+
+                var parameters = mi.GetParameters();
+
+                _invocationArgs = new object[parameters.Length];
+
+                for (var i = 0; i < parameters.Length; i++)
+                {
+                    var pIndex = i;
+                    var pInfo = parameters[pIndex];
+
+                    if (pInfo.HasDefaultValue)
+                    {
+                        _invocationArgs[pIndex] = pInfo.DefaultValue;
+                    }
+
+                    var pTriDefinition = TriPropertyDefinition.CreateForGetterSetter(
+                        pIndex, pInfo.Name, pInfo.ParameterType,
+                        ((self, targetIndex) => _invocationArgs[pIndex]),
+                        ((self, targetIndex, value) => _invocationArgs[pIndex] = value));
+
+                    var pTriProperty = new TriProperty(_property.PropertyTree, _property, pTriDefinition, null);
+
+                    AddChild(new TriPropertyElement(pTriProperty));
+                }
             }
 
-            if (string.IsNullOrEmpty(name))
+            protected override float GetHeaderHeight(float width)
             {
-                name = property.RawName;
+                return GetButtonHeight();
+            }
+
+            protected override void DrawHeader(Rect position)
+            {
+                if (_invocationArgs.Length > 0)
+                {
+                    TriEditorGUI.DrawBox(position, TriEditorStyles.TabOnlyOne);
+                }
+
+                var name = _nameResolver.GetValue(_property);
+
+                if (string.IsNullOrEmpty(name))
+                {
+                    name = _property.DisplayName;
+                }
+
+                if (string.IsNullOrEmpty(name))
+                {
+                    name = _property.RawName;
+                }
+
+                var buttonRect = new Rect(position)
+                {
+                    height = GetButtonHeight(),
+                };
+
+                if (GUI.Button(buttonRect, name))
+                {
+                    InvokeButton(_property, _invocationArgs);
+                }
             }
 
-            if (GUI.Button(position, name))
+            private float GetButtonHeight()
             {
-                InvokeButton(property, Array.Empty<object>());
+                return _attribute.ButtonSize != 0
+                    ? _attribute.ButtonSize
+                    : EditorGUIUtility.singleLineHeight;
             }
         }
 

Editor.Samples/Buttons/Buttons_ButtonSample.cs

@@ -8,4 +8,10 @@ private void DoButton()
     {
         Debug.Log("Button clicked!");
     }
+
+    [Button(ButtonSizes.Large)]
+    private void DoButtonWithParameters(Vector3 vec, string str = "default value")
+    {
+        Debug.Log($"Button with parameters: {vec} {str}");
+    }
 }

Editor/TriPropertyDefinition.cs

@@ -18,7 +18,7 @@ public class TriPropertyDefinition
         private readonly List<string> _extensionErrors = new List<string>();
         private readonly MemberInfo _memberInfo;
         private readonly List<Attribute> _attributes;
-        private readonly bool _isNonPolymorphicSerializedByUnity;
+        private readonly bool _skipNullValuesFix;
 
         private TriPropertyDefinition _arrayElementDefinitionBackingField;
 
@@ -53,6 +53,14 @@ private static TriPropertyDefinition CreateForMemberInfo(
                 memberInfo, ownerType, order, propertyName, propertyType, valueGetter, valueSetter, attributes, false);
         }
 
+        internal static TriPropertyDefinition CreateForGetterSetter(
+            int order, string name, Type fieldType,
+            ValueGetterDelegate valueGetter, ValueSetterDelegate valueSetter)
+        {
+            return new TriPropertyDefinition(
+                null, null, order, name, fieldType, valueGetter, valueSetter, null, false);
+        }
+
         internal TriPropertyDefinition(
             MemberInfo memberInfo,
             Type ownerType,
@@ -74,9 +82,7 @@ internal TriPropertyDefinition(
             _valueGetter = valueGetter;
             _valueSetter = valueSetter;
 
-            _isNonPolymorphicSerializedByUnity = memberInfo is FieldInfo fi &&
-                                                 TriUnitySerializationUtilities.IsSerializableByUnity(fi) &&
-                                                 fi.GetCustomAttribute<SerializeReference>() == null;
+            _skipNullValuesFix = memberInfo != null && memberInfo.GetCustomAttribute<SerializeReference>() != null;
 
             Order = order;
             IsReadOnly = _valueSetter == null || Attributes.TryGet(out ReadOnlyAttribute _);
@@ -150,7 +156,7 @@ public object GetValue(TriProperty property, int targetIndex)
         {
             var value = _valueGetter(property, targetIndex);
 
-            if (value == null && _isNonPolymorphicSerializedByUnity)
+            if (value == null && !_skipNullValuesFix)
             {
                 value = TriUnitySerializationUtilities.PopulateUnityDefaultValueForType(FieldType);
 

README.md

@@ -544,13 +544,16 @@ public float val;
 
 #### Button
 
-![Button](https://user-images.githubusercontent.com/26966368/168235907-2b5ed6d4-d00b-4cd6-999c-432abd0a2230.png)
+![Button](https://github.com/codewriter-packages/Tri-Inspector/assets/26966368/76f4a3a4-4bf9-4f58-8615-17adb986ab81)
 
 ```csharp
 [Button("Click me!")]
-private void DoButton()
+private void Button() => Debug.Log("Button clicked!");
+
+[Button(ButtonSizes.Large)]
+private void ButtonWithParameters(Vector3 vec, string str = "default value")
 {
-    Debug.Log("Button clicked!");
+    Debug.Log($"Button with parameters: {vec} {str}");
 }
 ```
 

Runtime/Attributes/ButtonAttribute.cs

@@ -16,9 +16,10 @@ public ButtonAttribute(string name)
             Name = name;
         }
 
-        public ButtonAttribute(ButtonSizes buttonSize)
+        public ButtonAttribute(ButtonSizes buttonSize, string name = null)
         {
             ButtonSize = (int) buttonSize;
+            Name = name;
         }
 
         public string Name { get; set; }