From df051b858216886705c43495d35e34b179acf471 Mon Sep 17 00:00:00 2001
From: Paul Knopf <pauldotknopf@gmail.com>
Date: Thu, 27 Dec 2018 21:34:20 -0500
Subject: [PATCH] Added helper method for setting properties and auto raising
 signal if value changes.

---
 src/net/Qml.Net/Signals.cs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/net/Qml.Net/Signals.cs b/src/net/Qml.Net/Signals.cs
index 6446e77b..46e83670 100644
--- a/src/net/Qml.Net/Signals.cs
+++ b/src/net/Qml.Net/Signals.cs
@@ -1,4 +1,5 @@
-using System.Linq;
+using System.Collections.Generic;
+using System.Linq;
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using Qml.Net.Internal;
@@ -66,6 +67,15 @@ namespace Qml.Net
             return ActivateSignal(instance, signalName);
         }
 
+        public static bool SetProperty<T>(this object instance, ref T storage, T value, [CallerMemberName] string propertyName = "")
+        {
+            if (EqualityComparer<T>.Default.Equals(storage, value))
+                return false;
+            storage = value;
+            instance.ActivateNotifySignal(propertyName);
+            return true;
+        }
+
         public static void AttachToSignal(this object instance, string signalName, System.Delegate del)
         {
             instance.AttachDelegateToSignal(signalName, del);