From: huayong.xu <huayong.xu@samsung.com>
Date: Wed, 16 Apr 2025 07:24:14 +0000 (+0800)
Subject: [NUI] Cache KeyEventArgs in View.
X-Git-Tag: submit/tizen/20250423.063125~1^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ccedf38f099c75e6b40686ceeff8b4130573c91d;p=platform%2Fcore%2Fcsapi%2Ftizenfx.git

[NUI] Cache KeyEventArgs in View.

When KeyEvent is triggered frequently, a cache can reduce the peak value
of memory usage.
---

diff --git a/src/Tizen.NUI/src/public/BaseComponents/ViewEvent.cs b/src/Tizen.NUI/src/public/BaseComponents/ViewEvent.cs
index 32faa31de..d66e7ccf5 100755
--- a/src/Tizen.NUI/src/public/BaseComponents/ViewEvent.cs
+++ b/src/Tizen.NUI/src/public/BaseComponents/ViewEvent.cs
@@ -837,6 +837,8 @@ namespace Tizen.NUI.BaseComponents
             keyInputFocusLostEventHandler?.Invoke(this, null);
         }
 
+        private KeyEventArgs keyEventArgs;
+
         private bool OnKeyEvent(IntPtr view, IntPtr keyEvent)
         {
             if (Disposed || IsDisposeQueued)
@@ -851,23 +853,23 @@ namespace Tizen.NUI.BaseComponents
                 return true;
             }
 
-            KeyEventArgs e = new KeyEventArgs();
+            if (keyEventArgs == null)
+            {
+                keyEventArgs = new KeyEventArgs();
+            }
 
             bool result = false;
-
-            e.Key = Tizen.NUI.Key.GetKeyFromPtr(keyEvent);
-
+            using var key = Tizen.NUI.Key.GetKeyFromPtr(keyEvent);
+            keyEventArgs.Key = key;
             if (keyEventHandler != null)
             {
                 Delegate[] delegateList = keyEventHandler.GetInvocationList();
-
-                // Oring the result of each callback.
+                // ORing the result of each callback.
                 foreach (EventHandlerWithReturnType<object, KeyEventArgs, bool> del in delegateList)
                 {
-                    result |= del(this, e);
+                    result |= del(this, keyEventArgs);
                 }
             }
-
             return result;
         }