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fix(Listbox): emit change on uncontrolled deselect - #7402
📖 Documentation (updates to the documentation or readme)
🐞 Bug fix (a non-breaking change that fixes an issue)
👌 Enhancement (improving an existing functionality)
✨ New feature (a non-breaking change that adds functionality)
🧹 Chore (updates to the build process or auxiliary tools and libraries)
⚠️ Breaking change (fix or feature that would cause existing functionality to change)
📚 Description
Deselecting the current item of an uncontrolled Listbox emitted update:modelValue with undefined but no change, so form validation never ran. The guard against repeated controlled emits compared against props.modelValue, which is also undefined when uncontrolled, so it now only applies to controlled values.
The Nuxt playground now displays button and tab examples across five sizes, including colour-mode tab variants. The Listbox update handler now checks for an unchanged value only when modelValue is defined. A test covers deselection in an uncontrolled Listbox and checks for an undefined model update and one change event.
The Listbox fix for emitting change on uncontrolled deselect looks sound. The playground page renders an unresolved component, which only affects the internal showcase and is a small fix.
Pre-merge checks: 4
Check name
Status
Explanation
Title check
The title names the Listbox fix: an uncontrolled deselect now emits the change event. The summary confirms the onUpdate guard change in src/runtime/components/Listbox.vue and a new test for uncontroll…
Description check
The description states the bug: deselecting the current item in an uncontrolled Listbox emitted update:modelValue with undefined but no change event, so form validation did not run. It also explains t…
Linked Issues check
Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check
Check skipped because no linked issues were found for this pull request.
Full details: Title check
Explanation
The title names the Listbox fix: an uncontrolled deselect now emits the change event. The summary confirms the onUpdate guard change in src/runtime/components/Listbox.vue and a new test for uncontrolled deselection emitting change. The title covers the main change and is specific.
Full details: Description check
Explanation
The description states the bug: deselecting the current item in an uncontrolled Listbox emitted update:modelValue with undefined but no change event, so form validation did not run. It also explains the fix, where the guard against repeated controlled emits now applies only to controlled values. This matches the Listbox.vue and spec changes.
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Actionable comments posted: 1
Fix comments: Fix CodeRabbit comments on this PR
Prompt to fix all issues
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Inline comments:
Review comments at @playgrounds/nuxt/app/pages/index.vue:
- Line 19: Update the size showcase in the page template so UColorModeTabs
resolves to a component: replace it with an appropriate registered runtime
component such as ColorModeSelect or ColorModeSwitch, or add and register
UColorModeTabs for the playground. Preserve the size iteration and its size
prop.
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Reviewing files that changed from the base of the PR and between ed61505 and 53e3b3f.
Files selected for processing: 3
playgrounds/nuxt/app/pages/index.vue
src/runtime/components/Listbox.vue
test/components/Listbox.spec.ts
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Merging this PR will improve performance by 39.88%
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⚠️1 benchmark with a significant change ran on different hardware
Its base and head results were measured on machines with a different CPU, core count or memory, so the change might not come from the code. Run base and head on the same runner type.
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🔗 Linked issue
Found by CodeRabbit on #7400.
❓ Type of change
📚 Description
Deselecting the current item of an uncontrolled Listbox emitted
update:modelValuewithundefinedbut nochange, so form validation never ran. The guard against repeated controlled emits compared againstprops.modelValue, which is alsoundefinedwhen uncontrolled, so it now only applies to controlled values.📝 Checklist