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<!DOCTYPE html>
<html>
<head>
<style>
#spacer {
width: 1000px;
height: 1000px;
}
#container {
width: 310px;
height: 310px;
overflow: scroll;
position: relative;
}
#focusable {
position: absolute;
background-color: #ace;
}
::-webkit-scrollbar {
width: 10px;
height: 10px;
}
::-webkit-scrollbar-thumb {
background: #aaa;
}
</style>
</head>
<body>
<div id="container">
<div id="spacer"></div>
<div id="focusable" tabindex="-1"></div>
</div>
<script src="../../resources/js-test.js"></script>
<script>
description('Tests that scrollable areas are scrolled to the correct location '
+ 'when an element is focused.');
var container = document.querySelector('#container');
var focusable = document.querySelector('#focusable');
function runTest(elemRect, initialScroll, expectedFinalScroll) {
focusable.style.left = elemRect.x + 'px';
focusable.style.top = elemRect.y + 'px';
focusable.style.width = elemRect.w + 'px';
focusable.style.height = elemRect.h + 'px';
container.scrollLeft = initialScroll.x;
container.scrollTop = initialScroll.y;
focusable.focus();
focusable.blur();
shouldBe('container.scrollLeft', String(expectedFinalScroll.x));
shouldBe('container.scrollTop', String(expectedFinalScroll.y));
};
// Smaller fully offscreen element is centered when focused.
runTest({x: 20, y: 20, w: 280, h: 280}, {x: 690, y: 690}, {x: 10, y: 10});
runTest({x: 700, y: 700, w: 280, h: 280}, {x: 10, y: 10}, {x: 690, y: 690});
// Larger fully offscreen element is centered when focused.
runTest({x: 10, y: 10, w: 320, h: 320}, {x: 690, y: 690}, {x: 20, y: 20});
runTest({x: 670, y: 670, w: 320, h: 320}, {x: 10, y: 10}, {x: 680, y: 680});
// Smaller fully onscreen element does not scroll when focused.
runTest({x: 10, y: 10, w: 100, h: 100}, {x: 10, y: 10}, {x: 10, y: 10});
runTest({x: 210, y: 210, w: 100, h: 100}, {x: 10, y: 10}, {x: 10, y: 10});
// Larger fully overlapping element does not scroll when focused.
runTest({x: 10, y: 10, w: 310, h: 310}, {x: 20, y: 20}, {x: 20, y: 20});
runTest({x: 20, y: 20, w: 310, h: 310}, {x: 20, y: 20}, {x: 20, y: 20});
// Smaller overlapping element scrolls to nearest edge when focused.
runTest({x: 20, y: 20, w: 280, h: 280}, {x: 290, y: 290}, {x: 20, y: 20});
runTest({x: 700, y: 700, w: 280, h: 280}, {x: 410, y: 410}, {x: 680, y: 680});
// Larger overlapping element scrolls to nearest edge when focused.
runTest({x: 10, y: 10, w: 320, h: 320}, {x: 320, y: 320}, {x: 30, y: 30});
runTest({x: 670, y: 670, w: 320, h: 320}, {x: 380, y: 380}, {x: 670, y: 670});
if (window.testRunner)
testRunner.dumpAsText();
</script>
</body>
<html>
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