MudTabs: Improve accessibility#11581
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danielchalmers merged 22 commits intoMudBlazor:devfrom Aug 2, 2025
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- added role="tab", role="tabpanel" and role="tablist" attributes - implemented keyboard navigation (ArrowLeft, ArrowRight, Enter, Space) with manual activation - added tabindex handling for correct focus behaviour - added unit tests to validate keyboard navigation, attributes, and focus behaviour
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## dev #11581 +/- ##
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Coverage 91.30% 91.30%
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I need to test locally but always love to see more accessibility!
There's a number of formatting diffs, could you see if you can revert them so it's easier to review the real changes?
- Add stable ID generation for tabs and panels - Implement aria-controls and aria-labelledby attributes - Use panel index for indentification - Ensure bidirectional accessibility relationship between tabs and panels
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Apart from the MudTabPanel needing the class/style/attributes this feels ready to go.
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Appreciate your accessibility contribution!!
Added a few comments and tested the changes locally, some feedback:
- in the "scrollable list" example the scroll icons aren't updated when hitting the last page/item ("go right" button should disappear, "go left" button should appear) and sometimes the view doesn't scroll with the focus, such that the focused tab is out of view (local WASM docs test URL)
- in the "visibility" example, toggling the visibility of the second tab breaks keyboard navigation (switching focus between the visible tabs doesn't work as expected) (local WASM docs test URL)
- if you're up for it you could also implement the
Deleteshortcut for deletable tabs in this local WASM docs example) for example - in the "simple tabs" example the tab wrapper has an
aria-labelledbythat points to an element that doesn't exist, I believe this is something that should be user controlled if they provide a label for the tab component - pressing
Spaceto activate a tab makes the page jump, you can refer to MudCheckBox's implementation for how to fix that
Don't necessarily think any of these are blocking for the PR though!
…ync() an async task to resolve error
aria-controls, role, id, aria-selected, tabindex and onkeydown added to mudtabs indexing on the tabpanel updated to the fieldid public string made internal space tests added to tabtests, keeptabsnotalive test updated to pass
…reating a new string object every time it's called
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fix(
MudTabs): improve accessibility for keyboard interactionTested locally in
MudBlazor.Docsto confirm behaviour across input methods.Description
This PR enhances keyboard accessibility in
MudTabsby implementing proper keyboard navigation and ARIA support. Previously, the tabs component lacked proper keyboard interaction patterns, making it difficult for keyboard and screen reader users to navigate between tabs effectively.Changes include:
role="tab",role="tablist",role="tabpanel", and aria-selected attributesNew Changes
aria-controls
How Has This Been Tested?
Tested locally by running the MudBlazor docs site using the edited source code:
Type of Changes
Checklist
dev).Related Issues