Index: tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_chaining_by_updating_class.html |
diff --git a/tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_chaining_by_updating_class.html b/tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_chaining_by_updating_class.html |
new file mode 100644 |
index 0000000000000000000000000000000000000000..297887570598427c43cc2d23c16dfe7a58765f3d |
--- /dev/null |
+++ b/tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_chaining_by_updating_class.html |
@@ -0,0 +1,48 @@ |
+<!DOCTYPE html> |
+<meta name="viewport" content="width=device-width, user-scalable=no"> |
+<link rel="stylesheet" type="text/css" href="resources/tablet.css"> |
+<link rel="stylesheet" type="text/css" href="resources/transition.css"> |
+<script src="resources/perftesthelper.js"></script> |
+<style> |
+target { |
+ opacity: 0; |
+} |
+.keyframe0 { |
+ opacity: 0; |
+} |
+.keyframe1 { |
+ opacity: 1; |
+} |
+</style> |
+ |
+<container id="container"></container> |
+ |
+<script> |
+var N = PerfTestHelper.getN(1000); |
+var duration = 1000; |
+var keyframeValues = [0, 1]; |
+ |
+for (var i = 0; i < N; i++) { |
+ var target = document.createElement('target'); |
+ target._keyframe = 0; |
+ target.style.transitionDelay = (-i / N * duration) + 'ms'; |
+ container.appendChild(target); |
+ target.addEventListener('transitionend', restartTransition); |
+} |
+ |
+function restartTransition(event) { |
+ event.target._keyframe ^= 1; |
+ event.target.className = 'keyframe' + event.target._keyframe; |
+ event.target.style.removeProperty('transition-delay'); |
+} |
+ |
+requestAnimationFrame(function() { |
+ var styleRule = document.styleSheets[2].rules[0].style; |
+ styleRule.opacity = keyframeValues[1]; |
+ requestAnimationFrame(function() { |
+ styleRule.opacity = keyframeValues[0]; |
+ }); |
+}); |
+ |
+PerfTestHelper.signalReady(); |
+</script> |