LayoutTests/fast/layout/display-none-no-relayout.html - Issue 188543002: Avoid reattachWhitespaceSiblings when renderer does not change.

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Side by Side Diff: LayoutTests/fast/layout/display-none-no-relayout.html

Issue 188543002: Avoid reattachWhitespaceSiblings when renderer does not change. (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Created 6 years, 9 months ago

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	1 <!DOCTYPE html>

	2 <script src="../../resources/js-test.js"></script>

	3 <style>

	4 .a span {}

	5 </style>

	6 <div id="parent">

	7 <span style="display:none"></span>

	8 <div style="float:left;"></div>

	9 <span></span>

	10 </div>

	11 <script>

	12 // Force style recalc and layout.

	13 document.body.offsetTop;

	14

	15 if (window.internals)

	16 shouldBe("window.internals.needsLayoutCount()", "0", true);

	17

	18 var parent = document.getElementById("parent");

	19

	20 // Changing the class attribute here will cause a style recalc with a resulting

	21 // reattach, but it should not cause a relayout.

	22 parent.className = "a";

	23

	24 if (window.internals) {

	25 shouldBe("window.internals.updateStyleAndReturnAffectedElementCount()", "4", true);

	26 shouldBe("window.internals.needsLayoutCount()", "0", true);

	27 }

	28 </script>

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