commit | 43b0d742a70560488a4348a7601884b2c1bd9b07 | [log] [tgz] |
---|---|---|
author | Mason Freed <masonf@chromium.org> | Tue Aug 29 17:29:29 2023 |
committer | Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> | Tue Aug 29 17:59:55 2023 |
tree | 744e39e44b60271c7dbcf1505704fbd61d81c3fe | |
parent | 36ce9f90725a46dc02643f1c1d5da87bb8101903 [diff] |
Rationalize the behavior of SupportsFocus, Is{keybd|mouse}Focusable This CL cleans up three functions in Element: - SupportsFocus: true if the element is *capable* of being focused. An element supports focus if, e.g. it has a tabindex attribute, or it is editable, or other conditions. Note that the element might *support* focus while not *being focusable*, for example if the element is disconnected from the document. - IsMouseFocusable: true if the element SupportsFocus() *and* is currently focusable using the mouse. - IsKeyboardFocusable: true if the element IsMouseFocusable(), *and* is currently focusable using the keyboard. Note that each method is a subset of the one above it, by construction. This also adds IsScrollableContainerThatShouldBeKeyboardFocusable(), which returns true for scrollers that should be made keyboard focusable if the feature flag for that behavior is enabled. This also adds a `DocumentLifecycle::DisallowTransitionScope` to make sure SupportsFocus() does not update the rendering lifecycle. Note crbug.com/1474971 and the new baselines for the video-playback-speed-menu.html test. That focus ring was there due to a confluence of weirdness in the media controls code, and that will need to be tackled separately, if desired. The new behavior might also be ok. Note that accessibility code is using `SupportsFocus()` to mean `IsFocusable()`, but prior to this CL, there were cases in which `SupportsFocus()` returned false and yet `IsFocusable()` returned true. That has been fixed in this CL everywhere except a11y code, which still uses `SupportsFocus()`. In addition, to avoid breaking a11y code, `SupportsFocus()` is still not calling the new `IsScrollableContainerThatShouldBeKeyboardFocusable()` method, which means for focusable scrollers, SupportsFocus will be `false` while `IsFocusable()` will be true. This will be fixed in a followup CL [2]. This patch borrows heavily from [1]. [1] https://chromium-review.googlesource.com/c/chromium/src/+/4518938 [2] https://chromium-review.googlesource.com/c/chromium/src/+/4813829 Bug: 1444450, 1474971 Change-Id: Ieeb5f0bde2cf2130c19cd15df1bf4f9c0aa21e19 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4795287 Reviewed-by: Tommy Steimel <steimel@chromium.org> Commit-Queue: Tommy Steimel <steimel@chromium.org> Auto-Submit: Mason Freed <masonf@chromium.org> Reviewed-by: Di Zhang <dizhangg@chromium.org> Cr-Commit-Position: refs/heads/main@{#1189598}
The web-platform-tests Project is a cross-browser test suite for the Web-platform stack. Writing tests in a way that allows them to be run in all browsers gives browser projects confidence that they are shipping software that is compatible with other implementations, and that later implementations will be compatible with their implementations. This in turn gives Web authors/developers confidence that they can actually rely on the Web platform to deliver on the promise of working across browsers and devices without needing extra layers of abstraction to paper over the gaps left by specification editors and implementors.
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