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chromium/devtools/devtools-frontend/refs/heads/main
commit
27348f482b75dc07a11b2a47babb47d5794b75df
[log]
author
Guangyue Xu <guangyue.xu@microsoft.com>
Thu Jul 30 17:09:57 2026
committer
devtools-frontend-scoped@luci-project-accounts.iam.gserviceaccount.com <devtools-frontend-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fri Jul 31 16:24:39 2026
tree
79002c29f53c087d08fb7ef5dfd4ad8536d5fda4
parent
836fe69b78186d9816abd5e442fe664736e3a677 [diff]
[A11y] Announce tree item expanded and collapsed states

VoiceOver on macOS does not announce changes to `aria-expanded` when a
tree item remains selected. Users therefore receive no state feedback
after expanding or collapsing a DOM node.

Announce user-initiated state changes through a polite live region. This
allows VoiceOver to finish announcing the tree item's name, role, and
position before announcing "expanded" or "collapsed".

Keep programmatic expansion and collapse silent to avoid unnecessary
announcements. Add unit tests for keyboard interactions when either the
tree item or tree owner has DOM focus.

Bug:540028208
Change-Id: I112ece0e598e709c2fc1e06f0e5eaf048ee19517
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/8161472
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Guangyue Xu <guangyue.xu@microsoft.com>
2 files changed
tree: 79002c29f53c087d08fb7ef5dfd4ad8536d5fda4
  1. .agents/
  2. .gemini/
  3. .github/
  4. .vscode/
  5. build_overrides/
  6. config/
  7. docs/
  8. extension-api/
  9. extensions/
  10. front_end/
  11. inspector_overlay/
  12. mcp/
  13. node_modules/
  14. scripts/
  15. test/
  16. third_party/
  17. v8/
  18. build
  19. buildtools
  20. .clang-format
  21. .clang-format-ignore
  22. .editorconfig
  23. .env.template
  24. .geminiignore
  25. .git-blame-ignore-revs
  26. .gitallowed
  27. .gitattributes
  28. .gitignore
  29. .gitmodules
  30. .gn
  31. .mailmap
  32. .npmignore
  33. .npmrc
  34. .style.yapf
  35. .stylelintignore
  36. .stylelintrc.json
  37. AUTHORS
  38. BUILD.gn
  39. codereview.settings
  40. CONTRIBUTING.md
  41. DEPS
  42. DIR_METADATA
  43. eslint.config.mjs
  44. favicon.ico
  45. LICENSE
  46. OWNERS
  47. package-lock.json
  48. package.json
  49. PRESUBMIT.py
  50. README.md
  51. SECURITY.md
  52. WATCHLISTS
README.md

Chrome DevTools frontend

npm package

The client-side of the Chrome DevTools, including all TypeScript & CSS to run the DevTools webapp.

Source code and documentation

The frontend is available on chromium.googlesource.com. Check out the Chromium DevTools documentation for instructions to set up, use, and maintain a DevTools front-end checkout, as well as design guidelines, and architectural documentation.

Source mirrors

DevTools frontend repository is mirrored on GitHub.

DevTools frontend is also available on NPM as the chrome-devtools-frontend package. It's not currently available via CJS or ES modules, so consuming this package in other tools may require some effort.

The version number of the npm package (e.g. 1.0.373466) refers to the Chromium commit position of latest frontend git commit. It's incremented with every Chromium commit, however the package is updated roughly daily.

Getting in touch

There are a few options to keep an eye on the latest and greatest of DevTools development: