🎨 Palette: Add ARIA accessibility to tabs and collapsibles by aicoder2009 · Pull Request #33 · aicoder2009/opencitation

aicoder2009 · 2026-04-28T11:39:19Z

🎨 Palette: Add ARIA accessibility to tabs and collapsibles

💡 What: Added standard ARIA roles, labels, and aria-controls linking to the WikiTabs and WikiCollapsible components.
🎯 Why: Ensures screen readers can correctly announce tab and collapsible states, improving keyboard navigation and accessibility.
♿ Accessibility:

Added role="tablist" and role="tab" to WikiTabs.
Added aria-selected, aria-controls, and generated IDs via useId() for tabs and panels.
Added aria-expanded and aria-controls to WikiCollapsible.

PR created automatically by Jules for task 570560968852422582 started by @aicoder2009

💡 What: Added standard ARIA roles, labels, and aria-controls linking to the `WikiTabs` and `WikiCollapsible` components. 🎯 Why: Ensures screen readers can correctly announce tab and collapsible states, improving keyboard navigation and accessibility. ♿ Accessibility: - Added `role="tablist"` and `role="tab"` to WikiTabs. - Added `aria-selected`, `aria-controls`, and generated IDs via `useId()` for tabs and panels. - Added `aria-expanded` and `aria-controls` to WikiCollapsible. Co-authored-by: aicoder2009 <[email protected]>

google-labs-jules · 2026-04-28T11:39:20Z

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vercel · 2026-04-28T11:39:21Z

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Project	Deployment	Actions	Updated (UTC)
opencitation	Ready	Preview, Comment	May 1, 2026 6:20pm

Copilot

Pull request overview

Adds ARIA semantics to the wiki UI primitives so assistive technologies can better understand tab and collapsible state/relationships, primarily for the Cite page workflow.

Changes:

Add role="tablist"/role="tab" plus aria-selected, aria-controls, and tab IDs in WikiTabs.
Add aria-expanded, aria-controls, and generated content IDs (via useId) in WikiCollapsible.
Add role="tabpanel" plus id/aria-labelledby wiring on /cite tab content container.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 8 comments.

File	Description
`src/components/wiki/wiki-tabs.tsx`	Adds ARIA roles/attributes to tab list and buttons.
`src/components/wiki/wiki-collapsible.tsx`	Adds ARIA expanded/controls wiring with `useId`-generated content ID.
`src/app/cite/page.tsx`	Marks the Cite tab content container as a tabpanel and links it to the active tab.
`.jules/palette.md`	Documents an accessibility “learning/action” note for tabs/collapsibles.

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Copilot · 2026-04-28T11:42:45Z

+          id={`panel-${activeTab}`}
+          aria-labelledby={`tab-${activeTab}`}>


PR description mentions “generated IDs via useId() for tabs and panels”, but the tab/panel IDs here are derived directly from activeTab and the static tab IDs. Either update the implementation to use an instance-unique ID prefix (via useId) or adjust the PR description to match the actual approach.

Copilot · 2026-04-28T11:42:45Z

          key={tab.id}
+          role="tab"
+          aria-selected={tab.active}
+          aria-controls={`panel-${tab.id}`}


aria-controls points to panel-${tab.id}, but in src/app/cite/page.tsx only a single tabpanel is rendered with an id based on the active tab. This means non-selected tabs reference panel IDs that do not exist in the DOM, breaking the tab↔panel relationship for assistive tech. Consider rendering one tabpanel per tab (with matching id/aria-labelledby) and toggling visibility via hidden, or otherwise ensuring every aria-controls target exists consistently.

Suggested change

aria-controls={`panel-${tab.id}`}

Copilot · 2026-04-28T11:42:45Z

+    <div className="flex border-b border-wiki-border-light" role="tablist">
      {tabs.map((tab) => (
        <button
          key={tab.id}
+          role="tab"
+          aria-selected={tab.active}
+          aria-controls={`panel-${tab.id}`}
+          id={`tab-${tab.id}`}
          onClick={() => onTabChange?.(tab.id)}


With role="tablist"/role="tab", the expected keyboard interaction is arrow-key navigation with a roving tabindex (only the selected tab has tabIndex=0, others -1) plus Home/End handling per WAI-ARIA authoring practices. Right now the tabs only handle click, so keyboard users will tab through every tab button and won’t get standard tab behavior.

Copilot · 2026-04-28T11:42:46Z

        <button
          key={tab.id}
+          role="tab"
+          aria-selected={tab.active}


aria-selected={tab.active} can become undefined because active is optional on Tab, which results in the attribute being omitted for some tabs. For ARIA tabs, aria-selected should be an explicit boolean for every tab (typically true for the active tab and false otherwise).

Suggested change

aria-selected={tab.active}

aria-selected={tab.active === true}

Copilot · 2026-04-28T11:42:46Z

+          aria-controls={`panel-${tab.id}`}
+          id={`tab-${tab.id}`}


The tab and panel IDs are derived only from tab.id (e.g. tab-quick-add / panel-quick-add). If more than one WikiTabs instance appears on the same page, these IDs will collide and the ARIA relationships become ambiguous. Consider using useId() to prefix the generated IDs (or accept an idBase prop) so IDs are unique per component instance.

Copilot · 2026-04-28T11:42:46Z

        </button>
      </div>
-      {isOpen && <div className="px-4 py-3">{children}</div>}
+      {isOpen && <div id={contentId} className="px-4 py-3">{children}</div>}


aria-controls={contentId} points at an element that is conditionally rendered only when isOpen is true. When collapsed, the controlled element isn’t in the DOM, which can confuse assistive tech. Prefer rendering the content container always with a stable id and toggling it via hidden/CSS (and optionally aria-hidden) while keeping aria-expanded in sync.

Suggested change

{isOpen && <div id={contentId} className="px-4 py-3">{children}</div>}

<div

id={contentId}

className="px-4 py-3"

hidden={!isOpen}

aria-hidden={!isOpen}

>

{children}

</div>

Copilot · 2026-04-28T11:42:47Z

@@ -22,11 +23,14 @@ export function WikiCollapsible({
        <button
          onClick={() => setIsOpen(!isOpen)}


setIsOpen(!isOpen) can read a stale value under React concurrent updates. Using a functional update (setIsOpen(v => !v)) avoids that class of bug and is the recommended pattern for toggles.

Suggested change

onClick={() => setIsOpen(!isOpen)}

onClick={() => setIsOpen((v) => !v)}

Copilot · 2026-04-28T11:42:47Z

+        <div
+          className="border border-wiki-border-light border-t-0 bg-wiki-white p-6 md:p-8"
+          role="tabpanel"
+          id={`panel-${activeTab}`}
+          aria-labelledby={`tab-${activeTab}`}>


This page reuses a single role="tabpanel" container and changes its id/aria-labelledby based on activeTab. That means only the active tab’s aria-controls target exists, and the other tabs’ aria-controls point to nonexistent IDs. For correct ARIA tab semantics, render a tabpanel per tab with stable IDs and hide inactive panels (e.g., hidden), or otherwise ensure all panel-* IDs exist consistently.

…2422582

Copilot AI review requested due to automatic review settings April 28, 2026 11:39

Copilot started reviewing on behalf of aicoder2009 April 28, 2026 11:39 View session

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Copilot AI reviewed Apr 28, 2026

View reviewed changes

aicoder2009 closed this May 1, 2026

aicoder2009 reopened this May 1, 2026

Merge branch 'main' into palette/ux-aria-tabs-collapsible-57056096885…

84233e5

…2422582

vercel Bot deployed to Preview May 1, 2026 18:20 View deployment

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🎨 Palette: Add ARIA accessibility to tabs and collapsibles#33

🎨 Palette: Add ARIA accessibility to tabs and collapsibles#33
aicoder2009 wants to merge 2 commits intomainfrom
palette/ux-aria-tabs-collapsible-570560968852422582

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		id={`panel-${activeTab}`}
		aria-labelledby={`tab-${activeTab}`}>

	aria-selected={tab.active}
	aria-selected={tab.active === true}

		@@ -22,11 +23,14 @@ export function WikiCollapsible({
		<button
		onClick={() => setIsOpen(!isOpen)}

	onClick={() => setIsOpen(!isOpen)}
	onClick={() => setIsOpen((v) => !v)}

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