ActionList: Correct semantics for Groups

[siddharthkp]

• Part of https://github.com/github/primer/issues/447

checklist:

• ActionList.Group create a ul inside a li
• The title of the Group is used as the label for the ul.
• The section Header is for visual users only. It's hidden for screen readers.
• Group can accept role

This is the generated HTML, formatted for legibility:

<ularia-label="Select reviewers"><li><divrole="presentation" aria-hidden="true"><spanid="react-aria-1">Suggestions</span></div><ularia-labelledby="react-aria-1" role="listbox"><lirole="option"
aria-selected="true"
aria-labelledby="react-aria-2"
aria-describedby="react-aria-3 react-aria-4"
><span><inputtype="checkbox" tabindex="-1" readonlyaria-readonly="false" checked/></span><spanclass="Box-nv15kw-0 iBXgEg"><imgsrc="https://github.com/pksjce.png" /></span><divdata-component="ActionList.Item--DividerContainer"><div><spanid="react-aria-2">pksjce</span><divid="react-aria-3" title="Pavithra Kodmad">Pavithra Kodmad</div></div><spanid="react-aria-4">Recently edited these files</span></div></li><li>....</li></ul></li><li><divrole="presentation" aria-hidden="true"><spanid="react-aria-5">Everyone</span></div><ularia-labelledby="react-aria-5" role="listbox"><li>...</li><li>...</li><li>...</li></ul></li>

Merge checklist

• Added/updated tests, but in a different PR: ActionList: test stories for axe violations #1597
• Added/updated documentation
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge

[changeset-bot]

🦋 Changeset detected

Latest commit: 40481f3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@primer/components	Patch

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[github-actions]

size-limit report 📦

Path	Size
dist/browser.esm.js	55.96 KB (0%)
dist/browser.umd.js	56.37 KB (0%)

[rezrah]

Question: Given there's a limited number of suitable roles for this component, can we help the user decision along by providing a union of those compatible types?

[siddharthkp]

I'm a bit hesitant because it's heavily context dependent so it's hard to create good types for it.

1. I'm hoping to set these automatically when you use our menu components like ActionMenu or SelectPanel and increase their coverage.
2. For building your menu story (common escape hatch in memex), I'm a bit hesitant about adding "hints" that send you the wrong way - classic a11y story, better to not say anything than say the wrong thing

I think I'll come around to this feeling more confident when we replace the escape hatches in memex with the right menu components (ActionMenu/Autocomplete/SelectPanel/etc)

[rezrah]

Look good!