fix(html-reporter): add keyboard navigation to TabbedPane component#41042
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pavelfeldman merged 1 commit intoMay 30, 2026
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Add WCAG 2.1 compliant keyboard navigation to TabbedPane in the HTML reporter and trace viewer. Previously, the tab components only responded to mouse clicks, preventing keyboard-only and screen reader users from navigating between tabs. - Add Arrow Right/Left to move focus between tabs - Add Home/End to jump to first/last tab - Use roving tabIndex pattern (0 for selected tab, -1 for others) Fixes microsoft#41005
pavelfeldman
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May 29, 2026
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Test results for "MCP"7207 passed, 1113 skipped Merge workflow run. |
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Test results for "tests 1"1 flaky43971 passed, 864 skipped Merge workflow run. |
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Summary
Fixes #41005 — the
TabbedPanecomponent in the HTML reporter and trace viewer was missing keyboard navigation, making it inaccessible to keyboard-only users and screen readers.Changes
Both
packages/html-reporter/src/tabbedPane.tsxandpackages/web/src/components/tabbedPane.tsxnow implement the ARIA Tabs keyboard interaction pattern:ArrowRightArrowLeftHomeEndAdditionally, tabs now use the roving
tabIndexpattern — the selected tab hastabIndex={0}and all others havetabIndex={-1}, so Tab key enters the tablist at the currently-selected tab.Implementation Notes
role="tablist"container for clean event delegationdocument.activeElementto find the focused tab index, avoiding stale closure issuese.preventDefault()is called on handled keys to prevent page scroll on Arrow/Home/End keys