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<!doctype html>
<meta charset="utf-8">
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<link rel='stylesheet' href='support/base.css' />
<link rel="author" title="Joy Yu" href="mailto:joysyu@mit.edu">
<link rel="help" href="https://drafts.csswg.org/css-tables-3/#computing-the-table-height">
<link rel="help" href="https://drafts.csswg.org/css-box-3/#visibility-prop">
<link rel="help" href="https://drafts.csswg.org/css-tables-3/#visibility-collapse-cell-rendering">
<style>
x-table {
border: 5px solid black;
}
x-table span {
display: inline-block;
vertical-align: top;
background: lime;
margin: 3px;
height: 100px;
width: 100px;
}
</style>
<main>
<h1>Visibility collapse</h1>
<a href="https://drafts.csswg.org/css-tables-3/#computing-the-table-height">Spec</a>
<p>
When setting any element that is not a row, col, row group, or col group,
visibility:collapse is equivalent to visibility:hidden.
</p>
<x-table id="one">
<x-tr>
<x-td id="visibleCell">
<span>row 1</span>
</x-td>
<x-td>
<span id="visibleSpan"></span>
</x-td>
</x-tr>
<x-tr>
<x-td>
<span>row 2</span>
</x-td>
<x-td>
<span></span>
</x-td>
</x-tr>
</x-table>
Bottom table is identical to top except top cells have been collapsed.
<x-table id="two">
<x-tr>
<x-td id="hiddenCell" style="visibility:collapse">
<span>row 1</span>
</x-td>
<x-td>
<span id="hiddenSpan" style="visibility:collapse"></span>
</x-td>
</x-tr>
<x-tr>
<x-td>
<span>row 2</span>
</x-td>
<x-td>
<span></span>
</x-td>
</x-tr>
</x-table>
</main>
<script>
tests = [
[
document.getElementById('two').offsetWidth,
document.getElementById('one').offsetWidth,
"table width is unchanged"
],
[
document.getElementById('two').offsetHeight,
document.getElementById('one').offsetHeight,
"table height is unchanged"
],
[
document.getElementById('hiddenCell').offsetWidth,
document.getElementById('visibleCell').offsetWidth,
"td visibility:collapse has no effect on td width"
],
[
document.getElementById('hiddenCell').offsetHeight,
document.getElementById('visibleCell').offsetHeight,
"td visibility:collapse has no effect on td height"
],
[
document.getElementById('hiddenSpan').offsetWidth,
document.getElementById('visibleSpan').offsetWidth,
"span visibility:collapse has no effect on span width"
],
[
document.getElementById('hiddenSpan').offsetHeight,
document.getElementById('visibleSpan').offsetHeight,
"span visibility:collapse has no effect on span height"
]];
for (i = 0; i< tests.length; i++) {
test(function()
{
assert_equals.apply(this, tests[i]);
},
tests[i][2]);
};
</script>
</html>
|
