LayoutTests/fast/media/media-query-list-listener-ordering.html - Issue 348893004: Rework MediaQueryMatcher to batch up listener notification

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Side by Side Diff: LayoutTests/fast/media/media-query-list-listener-ordering.html

Issue 348893004: Rework MediaQueryMatcher to batch up listener notification (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: missed one... Created 6 years, 5 months ago

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	1 <!DOCTYPE html>

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

	3

	4 <div id="sandbox"></div>

	5

	6 <script>

	7 description("Media query listeners should fire grouped by the MediaQueryList .");

	8

	9 var sandbox = document.getElementById("sandbox");

	10 var iframe = document.createElement("iframe");

	11 sandbox.appendChild(iframe);

	12

	13 var matchMedia = iframe.contentWindow.matchMedia;

	14 var mediaList1 = matchMedia("(max-width: 100px)");

	15 var mediaList2 = matchMedia("(max-width: 100px)");

	16 var mediaList3 = matchMedia("(max-width: 100px)");

	17

	18 var listenersCalled = [];

	19

	20 function makeListener(label) {

	21 return function() { listenersCalled.push(label); };

	22 }

	23

	24 mediaList3.addListener(makeListener("mediaList3_1"));

	25 mediaList2.addListener(makeListener("mediaList2_1"));

	26 mediaList1.addListener(makeListener("mediaList1_1"));

	27 mediaList2.addListener(makeListener("mediaList2_2"));

	28

	29 // FIXME: You shouldn't need to touch offsetTop to force these updates.

	30

	31 iframe.style.width = "200px";

	32 iframe.offsetTop;

	33

	34 var expectedResult = ["mediaList1_1", "mediaList2_1", "mediaList2_2", "media List3_1"];

	35 shouldBe("listenersCalled", "expectedResult");

	36 </script>

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