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Fix auto-height textarea collapsing to 2px when shown #59

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Merged
skartknet merged 1 commit into from
Oct 14, 2026
Merged

Fix auto-height textarea collapsing to 2px when shown #59

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16 changes: 16 additions & 0 deletions ConditionalDisplayers/Client/src/sharedLogic.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,11 @@ export const toggleElements = (aliases: string, isShow: boolean, hostElement: HT
: el) ?? el;

if (isShow) {
const wasHidden = target.style.display === 'none';
target.style.removeProperty('display');
if (wasHidden) {
refreshAutoHeightTextareas(target);
}
} else {
target.style.display = 'none';
}
Expand All @@ -40,6 +44,18 @@ export const toggleElements = (aliases: string, isShow: boolean, hostElement: HT
}
}

/**
* uui-textarea measures its auto height when connected. If that happens while hidden (display: none)
* it collapses to ~2px and never recovers, so re-measure once the element is visible again.
*/
const refreshAutoHeightTextareas = (container: HTMLElement) => {
requestAnimationFrame(() => {
deepQuerySelectAll('uui-textarea[auto-height]', container, false).forEach((textarea) => {
(textarea as HTMLElement & { autoUpdateHeight?: () => void }).autoUpdateHeight?.();
});
});
}

const elSelectors = (aliasList: string[]): string => {
let cssSelector = "";

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