/
legend-block-formatting-context.html
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legend-block-formatting-context.html
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<!DOCTYPE html>
<title>The legend element: block formatting context</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<style>
/* Set margin and padding for fieldset to 0 to make things simpler */
fieldset {
margin: 0;
padding: 0;
}
.wrapper {
height: 200px;
position: relative;
}
.float {
float: left;
width: 50px;
height: 50px;
background-color: orange;
}
</style>
<div class=wrapper>
<div class=float></div>
<legend id=in-body><div class=float></div></legend>
<div class=float></div>
</div>
<div class=wrapper>
<fieldset>
<div class=float></div>
<legend id=rendered-legend><div class=float></div></legend>
<legend id=in-fieldset-second-child><div class=float></div></legend>
<div><legend id=in-fieldset-descendant><div class=float></div></legend></div>
</fieldset>
</div>
<script>
const fieldsetBorderWidth = 2;
const legendPadding = 2;
test(() => {
const legend = document.getElementById('in-body');
assert_equals(legend.offsetLeft, 0, 'legend.offsetLeft');
assert_equals(legend.offsetTop, 0, 'legend.offsetTop');
assert_equals(legend.clientHeight, 0, 'legend.clientHeight');
const divAfter = legend.nextElementSibling;
assert_equals(divAfter.offsetLeft, 100, 'divAfter.offsetLeft');
assert_equals(divAfter.offsetTop, 0, 'divAfter.offsetTop');
}, 'in-body');
test(() => {
const legend = document.getElementById('rendered-legend');
assert_equals(legend.offsetLeft, fieldsetBorderWidth, 'legend.offsetLeft');
assert_equals(legend.offsetTop, 0, 'legend.offsetTop');
assert_equals(legend.clientHeight, 50, 'legend.clientHeight');
const divChild = legend.firstChild;
assert_equals(divChild.offsetLeft, fieldsetBorderWidth + legendPadding, 'divChild.offsetLeft');
assert_equals(divChild.offsetTop, 0, 'divChild.offsetTop');
}, 'rendered-legend');
test(() => {
const legend = document.getElementById('in-fieldset-second-child');
assert_equals(legend.offsetLeft, fieldsetBorderWidth, 'legend.offsetLeft');
assert_equals(legend.offsetTop, 50, 'legend.offsetTop');
assert_equals(legend.clientHeight, 0, 'legend.clientHeight');
const divChild = legend.firstChild;
assert_equals(divChild.offsetLeft, fieldsetBorderWidth + 50, 'divChild.offsetLeft');
assert_equals(divChild.offsetTop, 50, 'divChild.offsetTop');
}, 'in-fieldset-second-child');
test(() => {
const legend = document.getElementById('in-fieldset-descendant');
assert_equals(legend.offsetLeft, fieldsetBorderWidth, 'legend.offsetLeft');
assert_equals(legend.offsetTop, 50, 'legend.offsetTop');
assert_equals(legend.clientHeight, 0, 'legend.clientHeight');
const divChild = legend.firstChild;
assert_equals(divChild.offsetLeft, fieldsetBorderWidth + 50 + 50, 'divChild.offsetLeft');
assert_equals(divChild.offsetTop, 50, 'divChild.offsetTop');
}, 'in-fieldset-descendant');
</script>