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Copilot AI commented Sep 5, 2025

The useColorMode composable in bootstrap-vue-next was targeting the <body> element instead of the <html> element, which differs from both VueUse's default behavior and Bootstrap v5.3's recommendations.

Changes Made

  • Updated default selector: Changed from 'body' to 'html' in useColorMode composable
  • Added comprehensive tests: Created a full test suite with 8 tests to validate the composable behavior
  • Maintained backward compatibility: Users can still override the selector if needed

Before vs After

Before:

const selector = 'body'  // Applied data-bs-theme to <body>

After:

const selector = 'html'  // Applied data-bs-theme to <html>

Why This Change

  1. Aligns with VueUse: The original VueUse useColorMode defaults to targeting the <html> element
  2. Follows Bootstrap v5.3: Bootstrap's documentation recommends applying color mode attributes to the <html> element
  3. Better semantic approach: The HTML element is the root container for theme attributes

Testing

  • All existing tests continue to pass (1605 tests)
  • New test suite validates default behavior and customization options
  • Manual testing confirms data-bs-theme attribute is correctly applied to <html> element

Screenshot showing the useColorMode working correctly with dark mode applied to HTML element

The screenshot shows the composable successfully applying dark mode with the data-bs-theme="dark" attribute on the HTML element.

Fixes #2822.


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- Changes default selector in useColorMode from 'body' to 'html' to align with VueUse defaults and Bootstrap v5.3 recommendations
- Adds comprehensive test suite for useColorMode composable
- Maintains backward compatibility by allowing selector override
- Fixes issue #2822

Co-authored-by: VividLemon <[email protected]>
Copilot AI changed the title [WIP] useColorMode differences from VueUse feat: change useColorMode selector from 'body' to 'html' Sep 5, 2025
Copilot AI requested a review from VividLemon September 5, 2025 20:13
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@VividLemon VividLemon marked this pull request as ready for review September 6, 2025 01:24
@VividLemon VividLemon merged commit 688f826 into main Sep 6, 2025
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@github-actions github-actions bot mentioned this pull request Sep 6, 2025
xvaara added a commit to xvaara/bootstrap-vue-next that referenced this pull request Sep 11, 2025
* upstream/main: (32 commits)
  chore: release main (bootstrap-vue-next#2838)
  feat(BButtonToolbar): Add keyboard navigation support (bootstrap-vue-next#2837)
  fix(BFormSelect): modelValue not being applied during SSR (bootstrap-vue-next#2835)
  feat(BTable): Implement keyboard navigation (bootstrap-vue-next#2834)
  fix: BOffcanvas responsive SSR compatibility - defer breakpoint evaluation to client-side (bootstrap-vue-next#2833)
  chore: release main (bootstrap-vue-next#2831)
  fix(BDropdown): transition broken by inline display styles (bootstrap-vue-next#2832)
  feat: change useColorMode selector from 'body' to 'html' (bootstrap-vue-next#2830)
  chore: release main (bootstrap-vue-next#2817)
  feat: Add headerAttrs prop to BOffcanvas and BModal components
  docs: Add useScrollspy documentation
  fix: Remove lazy-modifier warning on FormInput docs (bootstrap-vue-next#2825)
  feat(BSort)!: Implement initial-sort-direction and move compare from sort-by to fields (bootstrap-vue-next#2777)
  docs(table): fix incorrect list item (bootstrap-vue-next#2823)
  docs: Fix grammar in documentation data files (bootstrap-vue-next#2816)
  doc(BTooltip): Parity pass (bootstrap-vue-next#2762)
  docs(BOverlay): Parity pass (bootstrap-vue-next#2767)
  feat: implement BFormRating disabled state (bootstrap-vue-next#2753) (bootstrap-vue-next#2793)
  docs: fix otp for index and reference pages (bootstrap-vue-next#2819)
  docs(BApp): add some additional details around legacy plugin use (bootstrap-vue-next#2820)
  ...
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useColorMode differences from VueUse

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