From 969f7858fc37d48a662b69af2eea8f14e61d7e2f Mon Sep 17 00:00:00 2001
From: Jumar Macato <16554748+jmacato@users.noreply.github.com>
Date: Mon, 23 Mar 2026 20:08:32 +0800
Subject: [PATCH] Add isManuallyStarted to IAnimation interface

---
 src/Avalonia.Base/Animation/Animation.cs   | 5 +++--
 src/Avalonia.Base/Animation/IAnimation.cs  | 3 ++-
 src/Avalonia.Base/Styling/StyleInstance.cs | 3 ++-
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/Avalonia.Base/Animation/Animation.cs b/src/Avalonia.Base/Animation/Animation.cs
index 0b3772f7fa..5f15f14534 100644
--- a/src/Avalonia.Base/Animation/Animation.cs
+++ b/src/Avalonia.Base/Animation/Animation.cs
@@ -295,8 +295,9 @@ namespace Avalonia.Animation
             return (newAnimatorInstances, subscriptions, animatesVisibility);
         }
 
-        IDisposable IAnimation.Apply(Animatable control, IClock? clock, IObservable<bool> match, Action? onComplete)
-            => Apply(control, clock, match, onComplete, isManuallyStarted: false);
+        IDisposable IAnimation.Apply(Animatable control, IClock? clock, IObservable<bool> match, Action? onComplete,
+            bool isManuallyStarted)
+            => Apply(control, clock, match, onComplete, isManuallyStarted);
 
         /// <inheritdoc cref="IAnimation.Apply"/>
         internal IDisposable Apply(Animatable control, IClock? clock, IObservable<bool> match, Action? onComplete,
diff --git a/src/Avalonia.Base/Animation/IAnimation.cs b/src/Avalonia.Base/Animation/IAnimation.cs
index a5b8b75b12..53146a3edd 100644
--- a/src/Avalonia.Base/Animation/IAnimation.cs
+++ b/src/Avalonia.Base/Animation/IAnimation.cs
@@ -14,7 +14,8 @@ namespace Avalonia.Animation
         /// <summary>
         /// Apply the animation to the specified control and run it when <paramref name="match" /> produces <c>true</c>.
         /// </summary>
-        internal IDisposable Apply(Animatable control, IClock? clock, IObservable<bool> match, Action? onComplete = null);
+        internal IDisposable Apply(Animatable control, IClock? clock, IObservable<bool> match,
+            Action? onComplete = null, bool isManuallyStarted = false);
 
         /// <summary>
         /// Run the animation on the specified control.
diff --git a/src/Avalonia.Base/Styling/StyleInstance.cs b/src/Avalonia.Base/Styling/StyleInstance.cs
index c397aef8c6..1ecaf3734a 100644
--- a/src/Avalonia.Base/Styling/StyleInstance.cs
+++ b/src/Avalonia.Base/Styling/StyleInstance.cs
@@ -72,7 +72,8 @@ namespace Avalonia.Styling
                 _animationTrigger ??= new LightweightSubject<bool>();
                 _animationApplyDisposables ??= new List<IDisposable>();
                 foreach (var animation in _animations)
-                    _animationApplyDisposables.Add(animation.Apply(animatable, null, _animationTrigger));
+                    _animationApplyDisposables.Add(animation.Apply(animatable, null, _animationTrigger,
+                        onComplete: null, isManuallyStarted: false));
 
                 if (_activator is null)
                     _animationTrigger.OnNext(true);