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<!doctype HTML>
<html>
<meta charset="utf8">
<title>Content Visibility: nested forced layouts</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
<meta name="assert" content="nested content-visibility items are all processed when layout is forced">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
body, html {
padding: 0;
margin: 0;
}
.spacer {
height: 3000px;
}
.target {
width: 12px;
height: 34px;
position: relative;
left: 5px;
top: 7px;
}
.hidden {
content-visibility: hidden;
}
.will-hide {
contain: style;
contain: size;
contain: layout;
contain: paint;
}
</style>
<div class=spacer></div>
<div class="will-hide">
<div id=one>A line of a certain length...</div>
</div>
<div class="will-hide">
<div class=target id=two></div>
</div>
<div class="will-hide">
<div class=target id=three></div>
</div>
<div class="will-hide">
<div class="will-hide">
<div class=target id=four></div>
</div>
</div>
<div class="will-hide">
<div class="will-hide">
<div class="will-hide">
<div class="will-hide">
<div class="will-hide">
<div class=target id=five></div>
</div>
</div>
</div>
</div>
</div>
<script>
function hideContent() {
document
.querySelectorAll('.will-hide')
.forEach(content => content.classList.add("hidden"));
}
function showContent() {
document
.querySelectorAll('.will-hide')
.forEach(content => content.classList.remove("hidden"));
}
const ids = ["one", "two", "three", "four", "five"];
for (let i = 0; i < ids.length; ++i) {
test(() => {
const expectedRect = document.getElementById(ids[i]).getClientRects()[0];
const expectedBoundingRect = document.getElementById(ids[i]).getBoundingClientRect();
hideContent();
const rect = document.getElementById(ids[i]).getClientRects()[0];
assert_equals(rect.width, expectedRect.width, `width for "${ids[i]}"`);
assert_equals(rect.height, expectedRect.height, `height for "${ids[i]}`);
const boundingRect = document.getElementById(ids[i]).getClientRects()[0];
assert_equals(boundingRect.width, expectedBoundingRect.width, `width for "${ids[i]}"`);
assert_equals(boundingRect.height, expectedBoundingRect.height, `height for "${ids[i]}`);
showContent();
}, `${ids[i]}.getBoundingClientRect(): `);
}
</script>
</html>
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