[web] Preserve text field focus across tab switches#188738
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This pull request introduces a mechanism to defer closing the text input connection when the document loses focus, addressing cases like browser tab switching where a blur event occurs before the visibility state changes. A 100ms timer is used to delay the connection closure, which is cancelled if the document becomes hidden or regains focus. Corresponding unit tests are added to verify these scenarios. The review feedback recommends adding documentation to the new test-override fields to comply with the style guide, and cancelling the pending blur timer within the enable method to prevent potential race conditions.
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flutter/flutter@dc2a870...f7b66f3 2026-07-10 [email protected] [iOS][test] Fix VSyncClient display link deallocation test on iOS 27 (flutter/flutter#188627) 2026-07-10 [email protected] Fix broken listener code in WindowScope (flutter/flutter#189208) 2026-07-10 [email protected] [web] Preserve text field focus across tab switches (flutter/flutter#188738) 2026-07-10 [email protected] [Impeller] Recycle HostBuffer arena entries only after GPU completion (flutter/flutter#188965) 2026-07-10 [email protected] Assert TextStyle height is not NaN (flutter/flutter#186617) 2026-07-10 [email protected] Roll Fuchsia Test Scripts from dFkTCiDxEtPxYK5Nn... to wLST_A-xfOeGT_5mj... (flutter/flutter#189259) 2026-07-10 [email protected] Roll Dart SDK from a11fb7ed40a5 to 0fc1668c4af4 (5 revisions) (flutter/flutter#189257) 2026-07-10 [email protected] Adds a missing `await` to a `FutureOr` (flutter/flutter#189198) 2026-07-10 [email protected] [web] Repair RenderCanvas CSS size drift (flutter/flutter#188797) 2026-07-10 [email protected] Roll Fuchsia Test Scripts from s5_gZFJ8De9AJalTw... to dFkTCiDxEtPxYK5Nn... (flutter/flutter#189215) 2026-07-10 [email protected] Roll Fuchsia Linux SDK from QcRFUtvCw2EobfJ8s... to czpzDg9ABY2oKLAOY... (flutter/flutter#189222) 2026-07-10 [email protected] Update Depdencies Used By `flutter_engine_group_performance` (flutter/flutter#189229) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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Fixes #178109
Problem
On Flutter Web, a focused
TextFormFieldloses focus after switching to another browser tab and returning. The browser blurs the hidden text input before reporting the page as hidden, so the engine closes the text input connection too early.Fix
Defer closing the text input connection when the document has lost focus and
relatedTargetis null. If the page becomes hidden, keep the connection alive so focus can recover on tab resume. If the page stays visible, close as before to preserve window and iframe blur behavior. The delayed callback also skips closing if the document quickly regains focus.Demo
Steps: focus the text field, type text, switch to another browser tab, then return. Before:
Focusedbecomesno. After:Focusedreturns toyes.