LayoutTests/fast/events/overflowchanged-event-raf-timing.html - Issue 82843003: Fire overflowchanged events at raf timing

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Side by Side Diff: LayoutTests/fast/events/overflowchanged-event-raf-timing.html

Issue 82843003: Fire overflowchanged events at raf timing (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Add a test Created 7 years ago

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	1 <!DOCTYPE html>

	2 <style>

	3 #scrollable { overflow: auto; height: 100px; width: 100px; }

	4 #inside.scroll { height: 2000px; }

	5 </style>

	6

	7 <p>Tests that overflowchanged events are deferred until raf.</p>

	8

	9 <div id="scrollable">

	10 <div id="inside"></div>

	11 </div>

	12

	13 <div id="output"></div>

	14

	15 <script>

	16 var scrollable = document.getElementById('scrollable');

	17 var output = document.getElementById('output');

	18 var inside = document.getElementById('inside');

	19

	20 if (window.testRunner) {

	21 testRunner.dumpAsText();

	22 testRunner.waitUntilDone();

	23 }

	24

	25 function log(text)

	26 {

	27 output.appendChild(document.createElement('div')).textContent = text;

	28 }

	29

	30 onload = function() {

	31 scrollable.addEventListener('overflowchanged', function() {

	32 log('overflowchanged');

	33 });

	34

	35 document.body.offsetTop;

	36

	37 inside.classList.toggle('scroll');

	38 document.body.offsetTop;

	39 log('layout');

	40

	41 inside.classList.toggle('scroll');

	42 document.body.offsetTop;

	43 log('layout');

	44

	45 inside.classList.toggle('scroll');

	46 document.body.offsetTop;

	47 log('layout');

	48

	49 requestAnimationFrame(function() {

	50 log('requestAnimationFrame');

	51 if (window.testRunner)

	52 testRunner.notifyDone();

	53 });

	54 }

	55 </script>

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