forked from mirrors/gecko-dev
273cb18ba2
Otherwise we lose the anchor constraints which can change our layout. The only thing we want is to stop following the anchor _node_, so we can just convert it to an anchor rect instead. Differential Revision: https://phabricator.services.mozilla.com/D173135
49 lines
1.1 KiB
JavaScript
49 lines
1.1 KiB
JavaScript
const PAGE = `
|
|
<!doctype html>
|
|
<select style="width: 600px">
|
|
<option>ABC</option>
|
|
<option>DEFG</option>
|
|
</select>
|
|
`;
|
|
|
|
function tick() {
|
|
return new Promise(r =>
|
|
requestAnimationFrame(() => requestAnimationFrame(r))
|
|
);
|
|
}
|
|
|
|
add_task(async function() {
|
|
const url = "data:text/html," + encodeURI(PAGE);
|
|
await BrowserTestUtils.withNewTab(
|
|
{
|
|
gBrowser,
|
|
url,
|
|
},
|
|
async function(browser) {
|
|
let popup = await openSelectPopup("click");
|
|
let arrowSB = popup.shadowRoot.querySelector(".menupopup-arrowscrollbox");
|
|
is(
|
|
arrowSB.getBoundingClientRect().width,
|
|
600,
|
|
"Should be the right size"
|
|
);
|
|
|
|
// Trigger a layout change that would cause us to layout the popup again,
|
|
// and change our menulist to be zero-size so that the anchor rect
|
|
// codepath is used. We should still use the anchor rect to expand our
|
|
// size.
|
|
await tick();
|
|
|
|
popup.closest("menulist").style.width = "0";
|
|
popup.style.minWidth = "2px";
|
|
|
|
await tick();
|
|
|
|
is(
|
|
arrowSB.getBoundingClientRect().width,
|
|
600,
|
|
"Should be the right size"
|
|
);
|
|
}
|
|
);
|
|
});
|