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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/#visibility-collapse-cell-rendering">
<style>
table {
border-spacing: 0;
border-collapse: collapse;
}
table td {
border: 1px solid blue;
padding: 5px;
}
</style>
<main>
<h1>Visibility collapse</h1>
<a href="https://drafts.csswg.org/css-tables-3/#visibility-collapse-cell-rendering">Spec</a>
<p>
Setting a row to visibility:collapse changes table height but not width.
</p>
<table id="one">
<tr id="firstRowRef">
<td rowspan="5" id="spanningCellRef">B<br>B<br>B<br>B<br>B</td>
<td>first row</td>
</tr>
<tr id="secondRowRef">
<td>aaaa</td>
</tr>
<tr>
<td>bbbb</td>
</tr>
<tr id="fourthRowRef">
<td>cccc</td>
</tr>
<tr id="fifthRowRef">
<td>dddd</td>
</tr>
</table>
In the bottom table, a row is dynamically collapsed, made visible, and collapsed again.
<table id="two">
<tr id="firstRow">
<td rowspan="5" id="spanningCell">B<br>B<br>B<br>B<br>B</td>
<td>first row</td>
</tr>
<tr id="secondRow">
<td>aaaa</td>
</tr>
<tr id="thirdRow">
<td>bbbb</td>
</tr>
<tr id="fourthRow">
<td>cccc</td>
</tr>
<tr id="fifthRow">
<td>dddd</td>
</tr>
</table>
</main>
<script>
function runTests() {
for (i = 0; i< tests.length; i++) {
test(function()
{
assert_equals.apply(this, tests[i]);
},
tests[i][2]);
};
}
function width(element) {
return element.getBoundingClientRect().width;
}
function height(element) {
return element.getBoundingClientRect().height;
}
document.getElementById("thirdRow").style.visibility = "collapse";
tests = [
[
width(document.getElementById('two')),
width(document.getElementById('one')),
"spanning row visibility:collapse doesn't change table width"
],
[
height(document.getElementById('firstRow')),
height(document.getElementById('firstRowRef')),
"when third row is collapsed, first row stays the same height"
],
[
height(document.getElementById('secondRow')),
height(document.getElementById('secondRowRef')),
"when third row is collapsed, second row stays the same height"
],
[
height(document.getElementById('thirdRow')),
0,
"third row visibility:collapse makes row height 0"
],
[
height(document.getElementById('fourthRow')),
height(document.getElementById('fourthRowRef')),
"when third row is collapsed, fourth row stays the same height"
],
[
height(document.getElementById('spanningCell')),
height(document.getElementById('firstRow')) +
height(document.getElementById('secondRow')) +
height(document.getElementById('fourthRow')) +
height(document.getElementById('fifthRow')),
"spanning cell shrinks to sum of remaining three rows' height"
]];
runTests();
document.getElementById("thirdRow").style.visibility = "visible";
tests = [
[
height(document.getElementById('firstRow')),
height(document.getElementById('firstRowRef')),
"when third row is visible, first row stays the same height"
],
[
height(document.getElementById('secondRow')),
height(document.getElementById('secondRowRef')),
"when third row is visible, second row stays the same height"
],
[
height(document.getElementById('thirdRow')),
height(document.getElementById('secondRowRef')),
"when third row is visible, third row stays the same height"
],
[
height(document.getElementById('fourthRow')),
height(document.getElementById('fourthRowRef')),
"when third row is visible, fourth row stays the same height"
],
[
height(document.getElementById('fifthRow')),
height(document.getElementById('fifthRowRef')),
"when third row is visible, fifth row stays the same height"
],
[
height(document.getElementById('spanningCell')),
height(document.getElementById('spanningCellRef')),
"when third row is visible, spanning cell stays the same height"
]];
runTests();
document.getElementById("thirdRow").style.visibility = "collapse";
tests = [
[
width(document.getElementById('two')),
width(document.getElementById('one')),
"(2nd collapse) spanning row visibility:collapse doesn't change table width"
],
[
height(document.getElementById('firstRow')),
height(document.getElementById('firstRowRef')),
"when third row is collapsed again, first row stays the same height"
],
[
height(document.getElementById('secondRow')),
height(document.getElementById('secondRowRef')),
"when third row is collapsed again, second row stays the same height"
],
[
height(document.getElementById('thirdRow')),
0,
"(2nd collapse) third row visibility:collapse makes row height 0"
],
[
height(document.getElementById('fourthRow')),
height(document.getElementById('fourthRowRef')),
"when third row is collapsed again, fourth row stays the same height"
],
[
height(document.getElementById('spanningCell')),
height(document.getElementById('firstRow')) +
height(document.getElementById('secondRow')) +
height(document.getElementById('fourthRow')) +
height(document.getElementById('fifthRow')),
"(2nd collapse) spanning cell shrinks to sum of remaining three rows' height"
]];
runTests();
</script>
</html>
|
