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<!DOCTYPE html>
<html>
<title>CSS Grid: Change named grid lines.</title>
<link rel="author" title="Julien Chaffraix" href="mailto:jchaffraix@chromium.org"/>
<link rel="help" href="https://drafts.csswg.org/css-grid/#placement"/>
<meta name="assert" content="Checks that updating the named grid lines definitions in grid-template-{rows|columns} recomputes the positions of automatically placed grid items."/>
<link rel="issue" href="https://crbug.com/248151"/>
<link href="/css/support/grid.css" rel="stylesheet"/>
<link href="/css/support/alignment.css" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css"/>
<style>
.grid {
grid-auto-flow: row dense;
}
#firstGridItem {
grid-row: auto;
grid-column: column;
}
#secondGridItem {
grid-row: row;
grid-column: auto;
}
#thirdGridItem {
grid-row: auto;
grid-column: auto;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<script>
function testGridDefinitions(gridTemplateRows, gridTemplateColumns, firstGridItemData, secondGridItemData, thirdGridItemData)
{
var gridElement = document.getElementsByClassName("grid")[0];
gridElement.style.gridTemplateRows = gridTemplateRows;
gridElement.style.gridTemplateColumns = gridTemplateColumns;
var firstGridItem = document.getElementById("firstGridItem");
firstGridItem.setAttribute("data-expected-width", firstGridItemData.width);
firstGridItem.setAttribute("data-expected-height", firstGridItemData.height);
firstGridItem.setAttribute("data-offset-x", firstGridItemData.x);
firstGridItem.setAttribute("data-offset-y", firstGridItemData.y);
var secondGridItem = document.getElementById("secondGridItem");
secondGridItem.setAttribute("data-expected-width", secondGridItemData.width);
secondGridItem.setAttribute("data-expected-height", secondGridItemData.height);
secondGridItem.setAttribute("data-offset-x", secondGridItemData.x);
secondGridItem.setAttribute("data-offset-y", secondGridItemData.y);
var thirdGridItem = document.getElementById("thirdGridItem");
thirdGridItem.setAttribute("data-expected-width", thirdGridItemData.width);
thirdGridItem.setAttribute("data-expected-height", thirdGridItemData.height);
thirdGridItem.setAttribute("data-offset-x", thirdGridItemData.x);
thirdGridItem.setAttribute("data-offset-y", thirdGridItemData.y);
checkLayout(".grid", false);
}
function testChangingGridDefinitions()
{
testGridDefinitions('10px [row] 20px', '30px [column]', { 'width': '0', 'height': '10', 'x': '30', 'y': '0' }, { 'width': '30', 'height': '20', 'x': '0', 'y': '10' }, { 'width': '30', 'height': '10', 'x': '0', 'y': '0' });
testGridDefinitions('10px [row] 20px', '30px', { 'width': '0', 'height': '10', 'x': '30', 'y': '0' }, { 'width': '30', 'height': '20', 'x': '0', 'y': '10' }, { 'width': '30', 'height': '10', 'x': '0', 'y': '0' });
testGridDefinitions('10px 20px [row]', '30px', { 'width': '0', 'height': '10', 'x': '30', 'y': '0' }, { 'width': '30', 'height': '0', 'x': '0', 'y': '30' }, { 'width': '30', 'height': '10', 'x': '0', 'y': '0' });
testGridDefinitions('10px 20px [row]', '30px [column]', { 'width': '0', 'height': '10', 'x': '30', 'y': '0' }, { 'width': '30', 'height': '0', 'x': '0', 'y': '30' }, { 'width': '30', 'height': '10', 'x': '0', 'y': '0' });
done();
}
</script>
<script type="text/javascript">
setup({ explicit_done: true });
</script>
<body onload="document.fonts.ready.then(() => { testChangingGridDefinitions(); })">
<div style="position: relative">
<div class="grid justifyContentStart">
<div class="sizedToGridArea" id="firstGridItem"></div>
<div class="sizedToGridArea" id="secondGridItem"></div>
<div class="sizedToGridArea" id="thirdGridItem"></div>
</div>
</div>
</body>
</html>
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