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feat(core): refactor keyboard navigation#2268

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danielleroux wants to merge 114 commits intorelease-5.0.0from
poc/dropdown-focus-trap
Open

feat(core): refactor keyboard navigation#2268
danielleroux wants to merge 114 commits intorelease-5.0.0from
poc/dropdown-focus-trap

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💡 What is the current behavior?

GitHub Issue Number: #

🆕 What is the new behavior?

Refactor keyboard navigation to match the common w3 accessibility patterns for ix-dropdown related components

🏁 Checklist

A pull request can only be merged if all of these conditions are met (where applicable):

  • 🦮 Accessibility (a11y) features were implemented
  • 🗺️ Internationalization (i18n) - no hard coded strings
  • 📲 Responsiveness - components handle viewport changes and content overflow gracefully
  • 📕 Add or update a Storybook story
  • 📄 Documentation was reviewed/updated siemens/ix-docs
  • 🧪 Unit tests were added/updated and pass (pnpm test)
  • 📸 Visual regression tests were added/updated and pass (Guide)
  • 🧐 Static code analysis passes (pnpm lint)
  • 🏗️ Successful compilation (pnpm build, changes pushed)

👨‍💻 Help & support

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changeset-bot bot commented Nov 14, 2025

🦋 Changeset detected

Latest commit: 1416631

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages
Name Type
@siemens/ix-angular Major
@siemens/ix-react Major
@siemens/ix Major
@siemens/ix-vue Major
@siemens/ix-docs Major
@siemens/ix-aggrid Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

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Summary of Changes

Hello @danielleroux, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a significant overhaul of keyboard navigation and focus management for ix-dropdown and related components. The primary goal is to improve accessibility by adhering to W3C standards for interactive elements. This involves a new event for controlling dropdown visibility, a centralized focus utility, and refined keyboard interaction logic, ensuring a more robust and accessible user interface.

Highlights

  • Refactored Keyboard Navigation: The core keyboard navigation logic for ix-dropdown components has been completely refactored to align with common W3C accessibility patterns, enhancing user experience for keyboard users.
  • New showChange Event: A new showChange event has been introduced for ix-dropdown components. This event fires before the dropdown's visibility changes and allows consumers to prevent the dropdown from showing by calling preventDefault() on the event.
  • Enhanced Focus Management: A new focus-visible-listener.ts utility and ix-focus-visible SCSS mixin have been added to provide consistent and accessible focus styling across components, particularly for keyboard interactions. Components now use an ix-focusable class to integrate with this system.
  • Dropdown Keyboard Interaction: Dropdowns now support comprehensive keyboard navigation, including ArrowUp, ArrowDown, Home, End for item navigation, ArrowLeft to close submenus, and ArrowRight, Space, Enter to open submenus or activate items. Tabbing out of a dropdown now correctly dismisses it.
  • Framework Wrapper Updates: The Angular, React, and Vue wrappers for ix-dropdown have been updated to expose the new showChange event, ensuring consistency across frameworks.
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Code Review

This pull request refactors the keyboard navigation for dropdown-related components to align with W3C accessibility patterns. It introduces a new focus management system using an ix-focusable class and a global listener to apply ix-focused styles, replacing the previous ArrowFocusController. A new showChange event is added to dropdowns to allow cancellation before showing. The changes are extensive and touch upon core components, their styling, and framework-specific wrappers. My review focuses on potential issues like the use of !important in styles, an empty catch block that could hide errors, leftover debug code, and unclear documentation.

@danielleroux danielleroux mentioned this pull request Nov 19, 2025
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Code Review

This pull request introduces a significant refactoring of keyboard navigation and focus management, primarily for dropdown-related components, to align with W3C accessibility patterns. A custom focus-visible listener has been implemented to provide more control over focus styling, moving away from native :focus-visible. This is a substantial and positive change for accessibility. The refactoring touches many components, including dropdown, select, button, and avatar, with new properties and events to support the new focus model. The tests have been updated to reflect these changes. I've identified one critical issue and a couple of medium-severity issues that should be addressed.

@danielleroux danielleroux changed the base branch from main to release-5.0.0 February 18, 2026 11:20
@danielleroux danielleroux requested a review from Copilot February 18, 2026 14:44
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Pull request overview

This pull request refactors keyboard navigation for dropdown-related components to align with W3C accessibility patterns. The changes significantly improve accessibility and keyboard interaction across the design system.

Changes:

  • Implements comprehensive keyboard navigation infrastructure with mixins for focus management, component IDs, and ARIA active descendant patterns
  • Refactors dropdown, select, date picker, breadcrumb, avatar, split button, and menu components to use the new keyboard navigation system
  • Adds focus proxy pattern for proper ARIA active descendant support
  • Upgrades Stencil from 4.37.1 to 4.43.0 with a patch to fix CSS module conflicts
  • Updates all framework wrappers (React, Vue, Angular) with new component properties and events

Reviewed changes

Copilot reviewed 111 out of 171 changed files in this pull request and generated no comments.

Show a summary per file
File Description
packages/core/src/components/utils/internal/mixins/* New mixin infrastructure for focus management and accessibility
packages/core/src/components/utils/focus/* Focus utilities, keyboard detection, focus trap, and focus proxy implementations
packages/core/src/components/dropdown/* Enhanced dropdown with keyboard navigation and ARIA support
packages/core/src/components/date-picker/* Comprehensive keyboard navigation for calendar interaction
packages/core/src/components/breadcrumb/* Refactored to use dropdown-button with proper ARIA semantics
packages/core/src/components/avatar/* Added focus proxy and ARIA active descendant support
packages/core/src/components/split-button/* Refactored to use dropdown-button with keyboard navigation
packages/core/src/tests/utils/test/page.ts Added toHaveVisibleFocus custom matcher for testing
packages/react/src/components*.ts Updated React wrappers with new events
packages/vue/src/components.ts Updated Vue wrappers with new properties
packages/angular/*/src/components.ts Updated Angular wrappers with new inputs/outputs
patches/* Stencil core patches for CSS module support
Files not reviewed (1)
  • pnpm-lock.yaml: Language not supported

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