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storage: Improve table accessibility #20471

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Hide the icons from screenreaders, and clarify the scope of things.

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This unfortunately brings back the Patternfly warning.

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mvollmer commented May 15, 2024

This unfortunately brings back the Patternfly warning.

Fixed with a hack. aria-hidden is stronger than aria-label, at least when looking at the accessibility tree in Firefox.

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This unfortunately brings back the Patternfly warning.

Fixed with a hack. aria-hidden is stronger than aria-label, at least when looking at the accessibility tree in Firefox.

Replaced with a slightly better hack. Using Td instead of Th...

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Looks good from the code side of things. I need to double-check the visuals to see if it looks any different from using a th instead of a td for the names.

<Th>{_("Location")}</Th>
<Th className="storage-size-column-header">{_("Size")}</Th>
<Th aria-label={_("Actions")} />
{ show_icons && <Td aria-hidden="true" /> }
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As far as I can tell, this is not a "hack" but completely valid.

I looked at docs for thead, tr, td, th. It seems there's nothing stopping anyone from putting either a td or th inside of a parent element of tr, even if the parent of that tr is a thead or tbody (or in some cases, even just table, if there is no caption, thead, and tbody).

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@mvollmer mvollmer May 16, 2024

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As far as I can tell, this is not a "hack" but completely valid.

I was just reading this: patternfly/patternfly#6272

Accessibility rules have changed, <td>s in theads are no longer acceptable.

shrug

@@ -608,19 +608,19 @@ export const PageTable = ({ emptyCaption, aria_label, pages, crossrefs, sorted,
</Card>);
} else {
const cols = [
<Td key="1" onClick={onClick}>
<Th scope="row" key="1" onClick={onClick}>
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This would be correct from the HTML side of things. I haven't looked to see if there are any stylistic implications (if it changes the look) yet, but I'll do that in a little bit.

Good catch on seeing that scope is deprecated for <td>! I felt it was just for <th> at first, but saw it used and mentioned for <td>, but I guess I saw old docs and skipped that part of the documentation on MDN. Thanks for finding and mentioning it!

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garrett commented May 16, 2024

BTW: It makes sense that aria-hidden overrides aria-label, just like display: none overrides other CSS styling.

@mvollmer mvollmer force-pushed the storage-aria-hide-icons branch 2 times, most recently from 970c1ad to ba78f28 Compare May 16, 2024 14:11
Hide the icons from screenreaders, and clarify the scope of things.
Patternfly complains about empty "Th" elements, but a empty "Td" looks
just the same and since we hide it anyway it doesn't hurt
accessibility to use the wrong kind here.

See https://github.com/patternfly/patternfly/issues/6658
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2 participants