From 589e848f441e9a2e9febb9a56f073ed3c5019794 Mon Sep 17 00:00:00 2001
From: "Frank A. Krueger" <fak@praeclarum.org>
Date: Fri, 2 Feb 2018 21:03:42 -0800
Subject: [PATCH] Trigger Change event when changing the checked state

---
 Ooui/EventTarget.cs | 18 ++++++++++++++++++
 Ooui/Input.cs       |  6 +++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/Ooui/EventTarget.cs b/Ooui/EventTarget.cs
index 4e8c273..a37b69a 100644
--- a/Ooui/EventTarget.cs
+++ b/Ooui/EventTarget.cs
@@ -182,6 +182,24 @@ namespace Ooui
             return true;
         }
 
+        protected virtual bool TriggerEvent (string name)
+        {
+            List<TargetEventHandler> handlers = null;
+            lock (eventListeners) {
+                List<TargetEventHandler> hs;
+                if (eventListeners.TryGetValue (name, out hs)) {
+                    handlers = new List<TargetEventHandler> (hs);
+                }
+            }
+            if (handlers != null) {
+                var args = new TargetEventArgs ();
+                foreach (var h in handlers) {
+                    h.Invoke (this, args);
+                }
+            }
+            return true;
+        }
+
         protected virtual bool TriggerEventFromMessage (Message message)
         {
             if (message.TargetId != Id)
diff --git a/Ooui/Input.cs b/Ooui/Input.cs
index d114c2d..966bf08 100644
--- a/Ooui/Input.cs
+++ b/Ooui/Input.cs
@@ -40,7 +40,11 @@ namespace Ooui
 
         public bool IsChecked {
             get => GetBooleanAttribute ("checked");
-            set => SetBooleanAttributeProperty ("checked", value);
+            set {
+                if (SetBooleanAttributeProperty ("checked", value)) {
+                    TriggerEvent ("change");
+                }
+            }
         }
 
         public double Minimum {