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<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-ui-4/#field-sizing">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
.disable-default {
field-sizing: content;
}
.small-placeholder {
font-size: 32px;
}
.small-placeholder::placeholder {
font-size: 16px;
}
.large-placeholder {
font-size: 20px;
}
.large-placeholder::placeholder {
font-size: 40px;
}
</style>
<body>
<div id="container"></div>
<script>
const DISABLE = 'class="disable-default"';
const LONG_VALUE = '12345678901234567890.123';
const LONG_TEXT = 'The quick brown fox jumps over the lazy dog.';
function addElements(source) {
const container = document.querySelector('#container');
container.innerHTML = source + source;
container.lastElementChild.classList.add('disable-default');
return {
fixed: container.firstElementChild,
content: container.lastElementChild
};
}
function addTwoElements(source1, source2) {
const container = document.querySelector('#container');
container.innerHTML = source1 + source2;
return {
e1: container.firstElementChild,
e2: container.lastElementChild
};
}
['number'].forEach(type => {
test(() => {
let pair = addElements(`<input type=${type}>`);
// A text <input> has approximately 20ch width by default.
// A text <input> with field-sizing:content must be shorter than the default.
assert_less_than(pair.content.offsetWidth, pair.fixed.offsetWidth);
pair = addTwoElements(`<input type=${type} ${DISABLE}>`,
`<input type=${type} ${DISABLE} value="123">`);
assert_less_than(pair.e1.offsetWidth, pair.e2.offsetWidth);
}, `${type}: Empty value`);
test(() => {
let pair = addElements(`<input type=${type} value="${LONG_VALUE}">`);
assert_greater_than(pair.content.offsetWidth, pair.fixed.offsetWidth);
pair = addElements(`<input type=${type} placeholder="${LONG_TEXT}">`);
assert_greater_than(pair.content.offsetWidth, pair.fixed.offsetWidth);
}, `${type}: Auto width and auto height with a long text`);
test(() => {
let pair = addElements(`<input type=${type} style="width:20ch; height:2lh">`);
assert_equals(pair.content.offsetWidth, pair.fixed.offsetWidth);
assert_equals(pair.content.offsetHeight, pair.fixed.offsetHeight);
pair = addElements(`<input type=${type} style="width:20ch; height:2lh" value="${LONG_VALUE}">`);
assert_equals(pair.content.offsetWidth, pair.fixed.offsetWidth);
assert_equals(pair.content.offsetHeight, pair.fixed.offsetHeight);
pair = addElements(`<input type=${type} style="width:20ch; height:2lh" placeholder="${LONG_TEXT}">`);
assert_equals(pair.content.offsetWidth, pair.fixed.offsetWidth);
assert_equals(pair.content.offsetHeight, pair.fixed.offsetHeight);
}, `${type}: Explicit width and height`);
test(() => {
let pair = addElements(`<input type=${type} style="width:20ch">`);
assert_equals(pair.content.offsetWidth, pair.fixed.offsetWidth);
pair = addElements(`<input type=${type} style="width:20ch" value="${LONG_VALUE}">`);
assert_equals(pair.content.offsetWidth, pair.fixed.offsetWidth);
pair = addElements(`<input type=${type} style="width:20ch" placeholder="${LONG_TEXT}">`);
assert_equals(pair.content.offsetWidth, pair.fixed.offsetWidth);
}, `${type}: Explicit width and auto height`);
test(() => {
let pair = addElements(`<input type=${type} style="height:2lh">`);
assert_less_than(pair.content.offsetWidth, pair.fixed.offsetWidth);
assert_equals(pair.content.offsetHeight, pair.fixed.offsetHeight);
pair = addElements(`<input type=${type} style="height:2lh" value="${LONG_VALUE}">`);
assert_greater_than(pair.content.offsetWidth, pair.fixed.offsetWidth);
assert_equals(pair.content.offsetHeight, pair.fixed.offsetHeight);
pair = addElements(`<input type=${type} style="height:2lh" placeholder="${LONG_TEXT}">`);
assert_greater_than(pair.content.offsetWidth, pair.fixed.offsetWidth);
assert_equals(pair.content.offsetHeight, pair.fixed.offsetHeight);
}, `${type}: Explicit height and auto width`);
test(() => {
let pair = addTwoElements(
`<input type=${type} class="disable-default small-placeholder">`,
`<input type=${type} class="disable-default small-placeholder" placeholder="foo bar">`);
assert_less_than(pair.e1.offsetWidth, pair.e2.offsetWidth);
assert_equals(pair.e1.offsetHeight, pair.e2.offsetHeight);
}, `${type}: Text caret is taller than the placeholder`);
test(() => {
let pair = addTwoElements(
`<input type=${type} class="disable-default large-placeholder">`,
`<input type=${type} class="disable-default large-placeholder" placeholder="foo bar">`);
assert_less_than(pair.e1.offsetWidth, pair.e2.offsetWidth);
assert_less_than(pair.e1.offsetHeight, pair.e2.offsetHeight);
pair = addTwoElements(
`<input type=${type} class="disable-default" style="font-size:40px; padding:16px">`,
`<input type=${type} class="disable-default large-placeholder"
placeholder="foo bar" style="font-size:40px; padding:16px">`);
assert_equals(pair.e1.offsetHeight, pair.e2.offsetHeight);
assert_equals(pair.e1.offsetTop, pair.e2.offsetTop);
}, `${type}: Text caret is shorter than the placeholder`);
test(() => {
const container = document.querySelector('#container');
container.innerHTML = `<input type=${type}>`;
const element = container.firstChild;
const w = element.offsetWidth;
element.classList.add('disable-default');
assert_less_than(element.offsetWidth, w);
}, `${type}: Update field-sizing property dynamically`);
});
</script>
</body>
|
