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Add OpaqueRange display:none WPT coverage #60192

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chromium-wpt-export-bot merged 1 commit into from
May 27, 2026
Merged

Add OpaqueRange display:none WPT coverage #60192

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130 changes: 130 additions & 0 deletions dom/ranges/tentative/OpaqueRange-display-none.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<meta charset="utf-8">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body></body>
<script>
const controls = ['input', 'textarea'];

function setupControl(control, value) {
document.body.innerHTML = (control === 'input') ? '<input type="text">' : '<textarea></textarea>';
const element = document.body.firstElementChild;
element.value = value;
return element;
}

// Verifies that OpaqueRanges remain functional when an element's layout frame
// is destroyed and re-created via display:none.
controls.forEach(controlType => {
test(() => {
const element = setupControl(controlType, 'ABCDE');
element.style.display = 'none';
const range = element.createValueRange(1, 4);
assert_equals(range.startOffset, 1, 'startOffset');
assert_equals(range.endOffset, 4, 'endOffset');
}, `createValueRange works on display:none element (${controlType})`);

test(() => {
const element = setupControl(controlType, 'ABCDE');
const range = element.createValueRange(1, 4);

element.style.display = 'none';
assert_equals(range.startOffset, 1, 'startOffset during display:none');
assert_equals(range.endOffset, 4, 'endOffset during display:none');

element.style.display = '';
element.style.display = 'none';
element.style.display = '';
assert_equals(range.startOffset, 1, 'startOffset after repeated show/hide');
assert_equals(range.endOffset, 4, 'endOffset after repeated show/hide');
}, `OpaqueRange offsets survive repeated display:none cycles (${controlType})`);

test(() => {
const element = setupControl(controlType, 'ABCDE');
const range = element.createValueRange(1, 4);
element.style.display = 'none';

assert_equals(range.startOffset, 1, 'startOffset before value change');
assert_equals(range.endOffset, 4, 'endOffset before value change');

element.value = 'XY';
assert_equals(range.startOffset, 0, 'startOffset clamped after value shrink');
assert_equals(range.endOffset, 0, 'endOffset clamped after value shrink');
}, `element.value replacement updates range during display:none (${controlType})`);

test(() => {
const element = setupControl(controlType, 'ABCDE');
const range = element.createValueRange(1, 4);
element.style.display = 'none';

assert_equals(range.startOffset, 1, 'startOffset before setRangeText');
assert_equals(range.endOffset, 4, 'endOffset before setRangeText');

element.setRangeText('XYZ', 2, 3); // Replace 'C' with 'XYZ'
assert_equals(range.startOffset, 1, 'startOffset after setRangeText');
assert_equals(range.endOffset, 6, 'endOffset after setRangeText (4 + net 2)');
}, `setRangeText updates range during display:none (${controlType})`);

test(() => {
const element = setupControl(controlType, 'ABCDE');
const range = element.createValueRange(2, 4);
element.style.display = 'none';

element.setRangeText('ZZ', 0, 0);
assert_equals(range.startOffset, 4, 'startOffset shifted by insert before');
assert_equals(range.endOffset, 6, 'endOffset shifted by insert before');
}, `setRangeText insert before range works during display:none (${controlType})`);

test(() => {
const element = setupControl(controlType, 'ABCDE');
const range = element.createValueRange(1, 3);
element.style.display = 'none';

element.setRangeText('', 0, 2);
assert_equals(element.value, 'CDE', 'value after deletion');
assert_equals(range.startOffset, 0, 'startOffset clamped to change offset');
assert_equals(range.endOffset, 1, 'endOffset adjusted after overlapping delete');
}, `setRangeText overlapping delete works during display:none (${controlType})`);

test(() => {
const element = setupControl(controlType, 'ABCDE');
element.style.display = 'none';
const range = element.createValueRange(3, 3);
assert_true(range.collapsed, 'collapsed range');

element.setRangeText('XX', 3, 3);
assert_equals(range.startOffset, 3, 'collapsed range start stays');
assert_equals(range.endOffset, 3, 'collapsed range end stays');
}, `Collapsed range insertion during display:none (${controlType})`);

test(() => {
const element = setupControl(controlType, 'ABCDE');
element.style.fontFamily = 'monospace';
element.style.fontSize = '16px';
element.style.padding = '0';
element.style.border = '0';
element.focus();
const range = element.createValueRange(0, 5);

assert_greater_than(range.getBoundingClientRect().width, 0, 'width before display:none');

element.style.display = 'none';
assert_equals(range.getBoundingClientRect().width, 0, 'width during display:none');
assert_equals(range.getClientRects().length, 0, 'no client rects during display:none');

element.style.display = '';
element.focus();
assert_greater_than(range.getBoundingClientRect().width, 0, 'width after restoring display');
}, `Geometry empty during display:none, restored after (${controlType})`);

test(() => {
const element = setupControl(controlType, 'ABCDE');
const range = element.createValueRange(1, 4);
element.style.display = 'none';

range.disconnect();
assert_equals(range.startOffset, 0, 'startOffset after disconnect');
assert_equals(range.endOffset, 0, 'endOffset after disconnect');
}, `disconnect() works during display:none (${controlType})`);
});
</script>
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