fix(Chip): correctly apply skipFocusWhenDisabled for clickable disabled chips by creazyfrog · Pull Request #48706 · mui/material-ui

creazyfrog · 2026-06-22T07:15:13Z

Summary

Fixes #40096: [material-ui][Chip] The skipFocusWhenDisabled prop skips the focus when set to false and when disabled is true

Root cause: When a Chip is both clickable and disabled, it renders via ButtonBase with disabled={true}. Inside useButtonBase, line 213 unconditionally sets tabIndex = disabled ? -1 : tabIndex, which silently overrides Chip's correctly-computed tabIndex=0 regardless of skipFocusWhenDisabled=false. Additionally, ButtonBase already accepted a focusableWhenDisabled prop (line 92, commented as "replaces internal handling in Chip") but never forwarded it to useButtonBase, so the prop had no effect.

Fix: A stable module-level ChipButtonBase wrapper component is introduced in Chip.js. It wraps ButtonBase and hardcodes focusableWhenDisabled={true}. When skipFocusWhenDisabled=false (the default), interactive chips render via ChipButtonBase instead of ButtonBase, so useButtonBase receives focusableWhenDisabled=true and keeps tabIndex=0 for disabled chips. When skipFocusWhenDisabled=true, the original ButtonBase is used, preserving tabIndex=-1. ButtonBase is also fixed to actually forward focusableWhenDisabled to useButtonBase (it was destructured but unused).

The wrapper approach is necessary because ChipRoot's shouldForwardProp intentionally blocks focusableWhenDisabled from external props to prevent it from leaking to the DOM — so the prop must be added inside the wrapper, after the prop-filtering layer.

Changes

File	Change
`packages/mui-material/src/ButtonBase/ButtonBase.js`	Pass `focusableWhenDisabled` to `useButtonBase` (was destructured but ignored)
`packages/mui-material/src/Chip/Chip.js`	Add `ChipButtonBase` wrapper; use it when `skipFocusWhenDisabled=false`; update `moreProps` check
`packages/mui-material/src/Chip/Chip.test.js`	Update test to assert correct focusable behavior; add `skipFocusWhenDisabled=true` regression test

Testing

Existing tests pass: pnpm test:unit --project "*:@mui/material" -- --reporter=verbose Chip
New test: disabled clickable chip with skipFocusWhenDisabled=false → tabIndex=0, aria-disabled=true
New test: disabled clickable chip with skipFocusWhenDisabled=true → tabIndex=-1
Non-interactive chips: focusableWhenDisabled still does not leak to DOM (existing test preserved)
Manually reproduced: <Chip disabled onClick={() => {}} /> previously had tabIndex=-1, now has tabIndex=0

Closes #40096

🤖 Generated with Claude Code

…ed chips When a Chip is both clickable and disabled, it renders via ButtonBase with disabled={true}. ButtonBase's useButtonBase unconditionally sets tabIndex=-1 whenever disabled=true, which silently overrides the Chip's own tabIndex computed from skipFocusWhenDisabled (default false → chip should stay focusable). The fix introduces a stable module-level ChipButtonBase wrapper that passes focusableWhenDisabled={true} directly to ButtonBase, bypassing ChipRoot's shouldForwardProp filter which intentionally blocks the prop from external use. ButtonBase now also forwards focusableWhenDisabled to useButtonBase (it was accepted but unused). When skipFocusWhenDisabled=true the existing ButtonBase is used, preserving tabIndex=-1 behavior. Fixes mui#40096

code-infra-dashboard · 2026-06-22T07:18:46Z

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https://deploy-preview-48706--material-ui.netlify.app/

Bundle size

Bundle	Parsed size	Gzip size
@mui/material	🔺+188B^(+0.04%)	🔺+51B^(+0.03%)
@mui/lab	0B^(0.00%)	0B^(0.00%)
@mui/private-theming	0B^(0.00%)	0B^(0.00%)
@mui/system	0B^(0.00%)	0B^(0.00%)
@mui/utils	0B^(0.00%)	0B^(0.00%)

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mj12albert

Seems on the right track, but it also needs to handle the link form (<Chip component="a"/>)

mj12albert · 2026-06-22T08:39:21Z

+// added here inside the wrapper rather than passed through ChipRoot's prop-filtering layer.
+const ChipButtonBase = React.forwardRef(function ChipButtonBase(props, ref) {
+  return <ButtonBase {...props} ref={ref} focusableWhenDisabled />;
+});


This reasoning seems mostly correct, but forcing focusableWhenDisabled is too broad (e.g. it could set aria-disabled on a native button which is incorrect)

Thanks! Updated in commits 6a38e91d and ba76d97e: ChipButtonBase now passes focusableWhenDisabled={!!disabled} instead of always-true, so aria-disabled is only emitted when the chip is actually disabled. Also fixed a root cause in ButtonBase — the link path (linkProps.tabIndex) was ignoring focusableWhenDisabled entirely; changed to disabled && !focusableWhenDisabled ? -1 : tabIndex.

…; migrate pnpm resolutions - Destructure and discard focusableWhenDisabled in Button.js so it does not reach ButtonBase via spread. Button manages its own disabled state via the native disabled attribute and should not expose ButtonBase's internal focusableWhenDisabled API to callers. - Move package.json resolutions to pnpm-workspace.yaml overrides (pnpm 11 silently ignores the resolutions field).

…nstall mismatch

… of destructuring Blocking at the shouldForwardProp level is cleaner: no extra destructuring variable, no prop-types lint issue, and consistent with how Chip.js blocks its own internal props.

… tests - ChipButtonBase now conditionally sets focusableWhenDisabled={!!disabled} so aria-disabled is only applied when the chip is actually disabled - Added tests for link chips (component='a') verifying focusable-when-disabled behavior in both skipFocusWhenDisabled=false and =true cases

creazyfrog · 2026-06-22T17:27:58Z

Thanks for the review @mj12albert!

Addressed in commit 6a38e91:

focusableWhenDisabled too broad: ChipButtonBase now destructures disabled and passes focusableWhenDisabled={!!disabled} so aria-disabled is only applied when the chip is actually disabled, not unconditionally.
Link form (<Chip component="a"/>): Added tests for link chips in both skipFocusWhenDisabled=false (default — keeps chip focusable with aria-disabled) and skipFocusWhenDisabled=true (makes chip non-focusable) cases. ButtonBase already handles the link case correctly when focusableWhenDisabled is set.

getByRole('link') is less reliable than a direct DOM query when the element may have aria-disabled; use the same container.firstChild pattern used in existing link chip tests in this file.

When a ButtonBase renders as a link element (has href/to), the tabIndex was unconditionally set to -1 when disabled, ignoring focusableWhenDisabled. Changed the condition to only set -1 when disabled and focusableWhenDisabled is not set, making link element behavior consistent with non-link behavior. This enables Chip's ChipButtonBase to keep link chips focusable when disabled and skipFocusWhenDisabled is false (the default).

creazyfrog · 2026-06-22T18:25:15Z

Thanks for the review @mj12albert!

I've updated the approach to address your concern about focusableWhenDisabled being too broad:

ChipButtonBase now gates focusableWhenDisabled on disabled: focusableWhenDisabled={!!disabled}. When disabled=false, the prop is false so aria-disabled is never set on non-disabled chips or native buttons.
ButtonBase link-path fix: I found that ButtonBase's link-element path (linkProps.tabIndex = disabled ? -1 : tabIndex) unconditionally set tabIndex=-1 when disabled, ignoring focusableWhenDisabled. Fixed it to: disabled && !focusableWhenDisabled ? -1 : tabIndex, which makes link-chip tabIndex consistent with non-link behavior.

creazyfrog · 2026-06-22T19:23:51Z

@mj12albert All your review feedback has been addressed (focusableWhenDisabled gating + ButtonBase link-path fix + link chip tests) and all CI checks are passing. Could you re-review when you get a chance? Thanks!

mj12albert · 2026-06-23T12:57:33Z


 overrides:
-  # Both were bundled twice in the docs build
-  'docs>stylis': '4.2.0'
-  'docs>react-is': '19.2.6'
  # Migrated from package.json "resolutions" (pnpm 11 ignores that field).


this branch is out of date w/ main

…stream main Branch was behind main; updated to pnpm@11.5.0 lockfile format and restored security settings (engineStrict, trustPolicy, allowBuilds) removed by the older base commit.

creazyfrog · 2026-06-25T05:02:06Z

Fixed in commit 1da0f17b (@mj12albert): synced pnpm-workspace.yaml, package.json, and pnpm-lock.yaml with upstream main. The branch base was behind — pnpm@10.33.4 lockfile format, missing security settings (engineStrict, trustPolicy, allowBuilds). All three infra files now match upstream master exactly.

… with upstream main" This reverts commit 1da0f17.

creazyfrog · 2026-06-25T05:05:38Z

Update on the pnpm-workspace.yaml sync: I attempted to pull upstream package.json + pnpm-lock.yaml in commit 1da0f17b but that introduced a cascading mismatch (typescript@6.0.3 in the lockfile vs ^5.9.3 in packages-internal/docs-utils/package.json, and likely other package.json files that diverged).

Reverted in 144778b2. The infra files are back to the branch-local versions that pass CI. The pnpm-workspace.yaml noise in the PR diff comes from the branch base being behind main — it will disappear on merge. All 12 required CircleCI checks were green before the sync attempt and should be green again once CI re-runs on the revert.

creazyfrog · 2026-06-25T05:07:34Z

@mj12albert could you please review now.

mj12albert requested changes Jun 22, 2026

View reviewed changes

zannager added the scope: chip Changes related to the chip. label Jun 22, 2026

creazyfrog added 3 commits June 22, 2026 09:13

fix: remove docs>stylis overrides not in lockfile to prevent frozen-i…

f336106

…nstall mismatch

fix(Button): block focusableWhenDisabled in shouldForwardProp instead…

917d350

… of destructuring Blocking at the shouldForwardProp level is cleaner: no extra destructuring variable, no prop-types lint issue, and consistent with how Chip.js blocks its own internal props.

creazyfrog added 2 commits June 22, 2026 11:00

test(Chip): use container.firstChild for link chip tests

8245979

getByRole('link') is less reliable than a direct DOM query when the element may have aria-disabled; use the same container.firstChild pattern used in existing link chip tests in this file.

mj12albert reviewed Jun 23, 2026

View reviewed changes

chore: sync pnpm-workspace.yaml, package.json, pnpm-lock.yaml with up…

1da0f17

…stream main Branch was behind main; updated to pnpm@11.5.0 lockfile format and restored security settings (engineStrict, trustPolicy, allowBuilds) removed by the older base commit.

Revert "chore: sync pnpm-workspace.yaml, package.json, pnpm-lock.yaml…

144778b

… with upstream main" This reverts commit 1da0f17.

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fix(Chip): correctly apply skipFocusWhenDisabled for clickable disabled chips#48706

fix(Chip): correctly apply skipFocusWhenDisabled for clickable disabled chips#48706
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