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Accordion Block: Add additional keypress handlers for navigation#71786

Merged
t-hamano merged 1 commit intotrunkfrom
accordion/keyboard-navigation
Sep 22, 2025
Merged

Accordion Block: Add additional keypress handlers for navigation#71786
t-hamano merged 1 commit intotrunkfrom
accordion/keyboard-navigation

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@t-hamano t-hamano commented Sep 20, 2025

Closes #71778

What?

This PR adds four keyboard navigation handlers to the Accordion Block.

Why?

See #71778 for more details.

How?

Each toggle button already has an ID like accordion-content-{unique_id} applied to it. Furthermore, in the previous implementation, the isOpen state stored the ID of the currently open toggle like this:

isOpen = [
  "accordion-content-2",
  "accordion-content-4"
]

To implement the navigation function, I extended this state to store the IDs of all the toggles in the accordion and their respective open/closed states.

accordionContents = [
	{ id: 'accordion-content-1', isOpen: true },
	{ id: 'accordion-content-2', isOpen: true },
	{ id: 'accordion-content-3', isOpen: false },
	{ id: 'accordion-content-4', isOpen: false }
]

This gives us a list of the toggle buttons in the accordion, so we can calculate which toggle button should have focus depending on the key pressed.

Testing Instructions

  • Open a post.
  • Paste the following HTML into the code editor and save the post:
Details
<!-- wp:accordion {"autoclose":true} -->
<div class="wp-block-accordion">
	<!-- wp:accordion-content -->
	<div class="wp-block-accordion-content">
		<!-- wp:accordion-header -->
		<h3 class="wp-block-accordion-header accordion-content__heading"><button class="accordion-content__toggle"><span class="accordion-content__toggle-title">Accordion Title 1</span><span class="accordion-content__toggle-icon" aria-hidden="true">+</span></button></h3>
		<!-- /wp:accordion-header -->
		<!-- wp:accordion-panel -->
		<div class="wp-block-accordion-panel">
			<!-- wp:paragraph -->
			<p>Accordion Panel Content 1 Accordion Panel Content 1 Accordion Panel Content 1 Accordion Panel Content 1 Accordion Panel Content 1</p>
			<!-- /wp:paragraph -->
		</div>
		<!-- /wp:accordion-panel -->
	</div>
	<!-- /wp:accordion-content -->
	<!-- wp:accordion-content -->
	<div class="wp-block-accordion-content">
		<!-- wp:accordion-header -->
		<h3 class="wp-block-accordion-header accordion-content__heading"><button class="accordion-content__toggle"><span class="accordion-content__toggle-title">Accordion Title 2</span><span class="accordion-content__toggle-icon" aria-hidden="true">+</span></button></h3>
		<!-- /wp:accordion-header -->
		<!-- wp:accordion-panel -->
		<div class="wp-block-accordion-panel">
			<!-- wp:paragraph -->
			<p>Accordion Panel Content 2 Accordion Panel Content 2 Accordion Panel Content 2 Accordion Panel Content 2 Accordion Panel Content 2</p>
			<!-- /wp:paragraph -->
		</div>
		<!-- /wp:accordion-panel -->
	</div>
	<!-- /wp:accordion-content -->
	<!-- wp:accordion-content -->
	<div class="wp-block-accordion-content">
		<!-- wp:accordion-header -->
		<h3 class="wp-block-accordion-header accordion-content__heading"><button class="accordion-content__toggle"><span class="accordion-content__toggle-title">Accordion Title 3</span><span class="accordion-content__toggle-icon" aria-hidden="true">+</span></button></h3>
		<!-- /wp:accordion-header -->
		<!-- wp:accordion-panel -->
		<div class="wp-block-accordion-panel">
			<!-- wp:paragraph -->
			<p>Accordion Panel Content 3 Accordion Panel Content 3 Accordion Panel Content 3 Accordion Panel Content 3 Accordion Panel Content 3 </p>
			<!-- /wp:paragraph -->
		</div>
		<!-- /wp:accordion-panel -->
	</div>
	<!-- /wp:accordion-content -->
	<!-- wp:accordion-content -->
	<div class="wp-block-accordion-content">
		<!-- wp:accordion-header -->
		<h3 class="wp-block-accordion-header accordion-content__heading"><button class="accordion-content__toggle"><span class="accordion-content__toggle-title">Accordion Title 4</span><span class="accordion-content__toggle-icon" aria-hidden="true">+</span></button></h3>
		<!-- /wp:accordion-header -->
		<!-- wp:accordion-panel -->
		<div class="wp-block-accordion-panel">
			<!-- wp:paragraph -->
			<p>Accordion Panel Content 4 Accordion Panel Content 4 Accordion Panel Content 4 Accordion Panel Content 4 Accordion Panel Content 4 </p>
			<!-- /wp:paragraph -->
		</div>
		<!-- /wp:accordion-panel -->
	</div>
	<!-- /wp:accordion-content -->
</div>
<!-- /wp:accordion -->

Testing Instructions for Keyboard

  • Confirm that the focus moves as follows:
    • Down arrow: next accordion header. If focus is on the last header, do nothing.
    • Up arrow: previous accordion header. If focus is on the first header, do nothing.
    • Home: first accordion header. If focus is on the first header, do nothing.
    • End: last accordion header. If focus is on the last accordion header, do nothing.
  • Confirm that the tab focus move works as before.

Screenshots or screencast

229858dce4017785fe5854c8ea64db54.mp4

@t-hamano t-hamano self-assigned this Sep 20, 2025
@t-hamano t-hamano added [Type] Enhancement A suggestion for improvement. [Focus] Accessibility (a11y) Changes that impact accessibility and need corresponding review (e.g. markup changes). [Block] Accordion Affects the Accordion Block labels Sep 20, 2025
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Size Change: +231 B (+0.01%)

Total Size: 1.95 MB

Filename Size Change
build-module/block-library/accordion/view.min.js 658 B +231 B (+54.1%) 🆘
ℹ️ View Unchanged
Filename Size
build-module/a11y/index.min.js 482 B
build-module/block-library/file/view.min.js 466 B
build-module/block-library/form/view.min.js 533 B
build-module/block-library/image/view.min.js 1.78 kB
build-module/block-library/navigation/view.min.js 1.19 kB
build-module/block-library/query/view.min.js 767 B
build-module/block-library/search/view.min.js 639 B
build-module/interactivity-router/full-page.min.js 565 B
build-module/interactivity-router/index.min.js 11.4 kB
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@t-hamano t-hamano marked this pull request as ready for review September 20, 2025 14:22

if ( $p->next_tag( array( 'class_name' => 'wp-block-accordion' ) ) ) {
$p->set_attribute( 'data-wp-interactive', 'core/accordion' );
$p->set_attribute( 'data-wp-context', '{ "autoclose": ' . $autoclose . ', "isOpen": [], "icon": "' . $icon . '", "iconPosition": "' . $icon_position . '" }' );
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I removed the icon and iconPosition context as there are not used anymore.

accordionContent.isOpen = ! accordionContent.isOpen;
}
},
handleKeyDown: withSyncEvent( ( event ) => {
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Unfortunately, the withSyncEvent wrapper doesn't seem to work as expected. If you press arrowUp/ArrowDown/Home/End key on the toggle button, the browser console logs the following warning:

Image

I believe this problem is the same as #69975, and should be fixed in #70325.

cc @felixarntz

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Co-authored-by: joedolson <[email protected]>

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Tested with NVDA/Firefox, VoiceOver/Chrome and JAWS/Chrome, and with keyboard only.

With screen readers running, the home/end keys operated normally for the screen reader, navigating to the beginning and end of the current line. That's good; we don't want to override screen reader behavior with these shortcuts.

On the keyboard, focused moved as expected on arrow & home/end.

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@joedolson Thanks for the review!

Unfortunately, the withSyncEvent wrapper doesn't seem to work as expected. If you press arrowUp/ArrowDown/Home/End key on the toggle button, the browser console logs the following warning:

I would like to merge this PR because this issue is not new to this PR and should be fixed separately.

@t-hamano t-hamano merged commit 9cb6cb5 into trunk Sep 22, 2025
86 of 87 checks passed
@t-hamano t-hamano deleted the accordion/keyboard-navigation branch September 22, 2025 02:46
@github-actions github-actions bot added this to the Gutenberg 21.8 milestone Sep 22, 2025
adamsilverstein pushed a commit to adamsilverstein/gutenberg that referenced this pull request Sep 22, 2025
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Labels

[Block] Accordion Affects the Accordion Block [Focus] Accessibility (a11y) Changes that impact accessibility and need corresponding review (e.g. markup changes). [Type] Enhancement A suggestion for improvement.

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Accordion Block: Add additional keypress handlers for navigation

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