From 6d25bf3aac3a10bd741f4193e790ab7886462b93 Mon Sep 17 00:00:00 2001
From: Matthew Olsson <matthewcolsson@gmail.com>
Date: Sat, 10 Feb 2024 21:11:51 -0700
Subject: [PATCH] LibWeb: Invalidate element when setting AnimationEffect's
 animation

---
 Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp | 8 ++++++++
 Userland/Libraries/LibWeb/Animations/AnimationEffect.h   | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp b/Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp
index a202d2c08c..49cbcdfac7 100644
--- a/Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp
+++ b/Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp
@@ -8,6 +8,7 @@
 #include <LibWeb/Animations/Animation.h>
 #include <LibWeb/Animations/AnimationEffect.h>
 #include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/DOM/Element.h>
 #include <LibWeb/WebIDL/ExceptionOr.h>
 
 namespace Web::Animations {
@@ -153,6 +154,13 @@ WebIDL::ExceptionOr<void> AnimationEffect::update_timing(OptionalEffectTiming ti
     return {};
 }
 
+void AnimationEffect::set_associated_animation(JS::GCPtr<Animation> value)
+{
+    m_associated_animation = value;
+    if (auto* target = this->target())
+        target->invalidate_style();
+}
+
 // https://www.w3.org/TR/web-animations-1/#animation-direction
 AnimationDirection AnimationEffect::animation_direction() const
 {
diff --git a/Userland/Libraries/LibWeb/Animations/AnimationEffect.h b/Userland/Libraries/LibWeb/Animations/AnimationEffect.h
index c0931ae45a..a7abf938a2 100644
--- a/Userland/Libraries/LibWeb/Animations/AnimationEffect.h
+++ b/Userland/Libraries/LibWeb/Animations/AnimationEffect.h
@@ -95,7 +95,7 @@ public:
     void set_timing_function(TimingFunction value) { m_timing_function = move(value); }
 
     JS::GCPtr<Animation> associated_animation() const { return m_associated_animation; }
-    void set_associated_animation(JS::GCPtr<Animation> value) { m_associated_animation = value; }
+    void set_associated_animation(JS::GCPtr<Animation> value);
 
     AnimationDirection animation_direction() const;