mozilla-central/testing/web-platform/tests/css/css-anchor-position/try-tactic-alignment.html

Source code

Revision control

Copy as Markdown

Other Tools

Test Info: Warnings

<!DOCTYPE html>
<title>CSS Anchor Positioning: try-tactic, justify/align-self</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
#cb {
position: absolute;
width: 400px;
height: 400px;
border: 1px solid black;
}
#anchor {
position: absolute;
left: 150px;
top: 150px;
width: 100px;
height: 50px;
background-color: coral;
}
#target, #ref {
position: absolute;
left: 450px; /* force fallback */
width: 40px;
height: 40px;
background-color: skyblue;
}
#ref {
background-color: seagreen;
}
</style>
<style id=style>
</style>
<div id=cb>
<div id=target></div>
<div id=ref></div>
</div>
<script>
// Verify that a given try-tactic + untransformed declaration equals
// a reference element using `transformed` directly.
function test_justify_flip(try_tactic, untransformed, transformed, direction, writing_mode) {
if (direction==undefined) {
direction = 'ltr';
}
if (writing_mode==undefined) {
writing_mode = 'horizontal-tb';
}
test((t) => {
t.add_cleanup(() => {
document.documentElement.style = '';
style.textContent = '';
});
document.documentElement.style.direction = direction;
document.documentElement.style.writingMode = writing_mode;
style.textContent = `
@position-try --pf {
inset: 0;
${untransformed}
}
#target {
position-try-options: --pf ${try_tactic};
}
@position-try --ref {
inset: 0;
${transformed}
}
#ref {
position-try-options: --ref;
}
`;
assert_equals(target.offsetLeft, ref.offsetLeft, 'offsetLeft');
assert_equals(target.offsetTop, ref.offsetTop, 'offsetTop');
}, `${try_tactic}, ${untransformed}, ${transformed}, ${direction}, ${writing_mode}`);
}
test_justify_flip(
'',
'justify-self:start;align-self:start',
'justify-self:start;align-self:start');
test_justify_flip(
'flip-inline',
'justify-self:start;align-self:start',
'justify-self:end;align-self:start');
test_justify_flip(
'flip-block',
'justify-self:start;align-self:start',
'justify-self:start;align-self:end');
test_justify_flip(
'flip-block flip-inline',
'justify-self:start;align-self:start',
'justify-self:end;align-self:end');
test_justify_flip(
'flip-start',
'justify-self:start;align-self:end',
'justify-self:end;align-self:start');
test_justify_flip(
'flip-block flip-start',
'justify-self:start;align-self:start',
'justify-self:end;align-self:start');
test_justify_flip(
'flip-inline flip-start',
'justify-self:start;align-self:start',
'justify-self:start;align-self:end');
test_justify_flip(
'flip-block flip-inline flip-start',
'justify-self:start;align-self:start',
'justify-self:end;align-self:end');
// left/right are special cases, because they're supported by
// justify-self, but not align-self:
test_justify_flip(
'flip-inline',
'justify-self:left;align-self:start',
'justify-self:right;align-self:start');
test_justify_flip(
'flip-start',
'justify-self:left;align-self:end',
'justify-self:end;align-self:self-start');
test_justify_flip(
'flip-start',
'justify-self:right;align-self:start',
'justify-self:start;align-self:self-end');
// That that all relevant computed values can be transformed:
function test_computed_value(try_tactic, property, value, expected) {
test((t) => {
t.add_cleanup(() => {
style.textContent = '';
});
style.textContent = `
@position-try --pf {
inset: 0;
${property}:${value};
}
#target {
position-try-options: --pf ${try_tactic};
}
`;
assert_equals(getComputedStyle(target).getPropertyValue(property), expected);
}, `${try_tactic}, ${property}:${value}`);
}
// No flip:
for (let property of ['justify-self', 'align-self']) {
test_computed_value('', property, 'start', 'start');
test_computed_value('', property, 'end', 'end');
test_computed_value('', property, 'self-start', 'self-start');
test_computed_value('', property, 'self-end', 'self-end');
test_computed_value('', property, 'flex-start', 'flex-start');
test_computed_value('', property, 'flex-end', 'flex-end');
}
test_computed_value('flip-inline', 'justify-self', 'start', 'end');
test_computed_value('flip-inline', 'justify-self', 'end', 'start');
test_computed_value('flip-inline', 'justify-self', 'self-start', 'self-end');
test_computed_value('flip-inline', 'justify-self', 'self-end', 'self-start');
test_computed_value('flip-inline', 'justify-self', 'flex-start', 'flex-end');
test_computed_value('flip-inline', 'justify-self', 'flex-end', 'flex-start');
test_computed_value('flip-inline', 'justify-self', 'left', 'right');
test_computed_value('flip-inline', 'justify-self', 'right', 'left');
test_computed_value('flip-block', 'align-self', 'start', 'end');
test_computed_value('flip-block', 'align-self', 'end', 'start');
test_computed_value('flip-block', 'align-self', 'self-start', 'self-end');
test_computed_value('flip-block', 'align-self', 'self-end', 'self-start');
test_computed_value('flip-block', 'align-self', 'flex-start', 'flex-end');
test_computed_value('flip-block', 'align-self', 'flex-end', 'flex-start');
test_justify_flip(
'flip-start',
'justify-self:left;align-self:end',
'justify-self:end;align-self:self-start',
'ltr',
'vertical-rl');
test_justify_flip(
'flip-start',
'justify-self:left;align-self:start',
'justify-self:start;align-self:self-end',
'rtl');
</script>