[ Widget Preview ] Improve --machine output
#175003
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This change adds the following events: - `widget_preview.initializing`: sent immediately after the widget previewer starts. This event includes the PID of the process starting the widget previewer for use by tooling to explicitly kill the tool process. - `widget_preview.logMessage`: sent for calls to `Logger` methods when in machine mode. This follows the same format as `daemon.logMessage`. This change also fixes and improves testing of `WidgetPreviewMachineAwareLogger` in `widget_preview_machine_test.dart` as the existing test validator did not cause tests to fail correctly. Fixes #175002
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This pull request improves the --machine output for widget previews by adding initializing and logMessage events, which is a great enhancement for tooling. The refactoring of WidgetPreviewMachineAwareLogger instantiation and the improvements to the integration tests are also valuable changes that increase code quality and robustness. However, I've identified two critical syntax errors in widget_preview.dart that will prevent the code from compiling. My review includes suggestions to fix these issues.
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flutter/flutter@87d5b75...973320c 2025-09-08 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from V_KooYFGRmGm6JrqM... to m7Qmvj5wtfPlMA8i8... (flutter/flutter#175067) 2025-09-08 engine-flutter-autoroll@skia.org Roll Packages from cab2ac2 to 24588c6 (1 revision) (flutter/flutter#175070) 2025-09-08 engine-flutter-autoroll@skia.org Roll Skia from e1a200e25998 to 0c2b0a00b7b5 (1 revision) (flutter/flutter#175065) 2025-09-08 engine-flutter-autoroll@skia.org Roll Dart SDK from c7518d480c73 to 83c6b6124380 (1 revision) (flutter/flutter#175064) 2025-09-08 engine-flutter-autoroll@skia.org Roll Skia from 87ee27220133 to e1a200e25998 (4 revisions) (flutter/flutter#175061) 2025-09-08 bkonyi@google.com [ Widget Preview ] Improve `--machine` output (flutter/flutter#175003) 2025-09-08 bruno.leroux@gmail.com Fix DropdownMenuFormField does not clear text field content on reset … (flutter/flutter#174937) 2025-09-08 engine-flutter-autoroll@skia.org Roll Skia from 310062ae6aee to 87ee27220133 (1 revision) (flutter/flutter#175051) 2025-09-08 engine-flutter-autoroll@skia.org Roll Dart SDK from 34cd2b4b56dd to c7518d480c73 (1 revision) (flutter/flutter#175049) 2025-09-07 engine-flutter-autoroll@skia.org Roll Skia from b00ca433657b to 310062ae6aee (1 revision) (flutter/flutter#175046) 2025-09-07 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from LRAtLJWUiZNmSVShG... to V_KooYFGRmGm6JrqM... (flutter/flutter#175040) 2025-09-07 engine-flutter-autoroll@skia.org Roll Skia from 064cf12ad0cc to b00ca433657b (1 revision) (flutter/flutter#175028) 2025-09-06 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from xG_uERsxHvUwFHpF2... to LRAtLJWUiZNmSVShG... (flutter/flutter#175018) 2025-09-06 engine-flutter-autoroll@skia.org Roll Dart SDK from f138e58bcf6d to 34cd2b4b56dd (2 revisions) (flutter/flutter#175017) 2025-09-06 engine-flutter-autoroll@skia.org Roll Skia from 5c60f8a66270 to 064cf12ad0cc (2 revisions) (flutter/flutter#175015) 2025-09-05 engine-flutter-autoroll@skia.org Roll Skia from f29ea2795934 to 5c60f8a66270 (2 revisions) (flutter/flutter#175010) 2025-09-05 108678139+manu-sncf@users.noreply.github.com Fix SliverMainAxisGroup scrollOffsetCorrection (flutter/flutter#174369) 2025-09-05 engine-flutter-autoroll@skia.org Roll Skia from 759f406584da to f29ea2795934 (3 revisions) (flutter/flutter#175000) 2025-09-05 engine-flutter-autoroll@skia.org Roll Dart SDK from 5e3afb74ffdf to f138e58bcf6d (15 revisions) (flutter/flutter#174994) 2025-09-05 engine-flutter-autoroll@skia.org Roll Packages from 98580c6 to cab2ac2 (2 revisions) (flutter/flutter#174998) 2025-09-05 41930132+hellohuanlin@users.noreply.github.com [ios26]fix host engine compile error (flutter/flutter#174723) 2025-09-05 30870216+gaaclarke@users.noreply.github.com Added note about how to compile licenses_cpp (flutter/flutter#174947) 2025-09-05 engine-flutter-autoroll@skia.org Roll Skia from 845ec125e94c to 759f406584da (3 revisions) (flutter/flutter#174992) 2025-09-05 mdebbar@google.com [web] Minor simplification in flutter.js loader (flutter/flutter#174963) 2025-09-05 30870216+gaaclarke@users.noreply.github.com deletes the old license checker. (flutter/flutter#174719) 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 stuartmorgan@google.com,tarrinneal@google.com 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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This change adds the following events: - `widget_preview.initializing`: sent immediately after the widget previewer starts. This event includes the PID of the process starting the widget previewer for use by tooling to explicitly kill the tool process. - `widget_preview.logMessage`: sent for calls to `Logger` methods when in machine mode. This follows the same format as `daemon.logMessage`. This change also fixes and improves testing of `WidgetPreviewMachineAwareLogger` in `widget_preview_machine_test.dart` as the existing test validator did not cause tests to fail correctly. Fixes flutter#175002
Jaineel-Mamtora
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Sep 24, 2025
This change adds the following events: - `widget_preview.initializing`: sent immediately after the widget previewer starts. This event includes the PID of the process starting the widget previewer for use by tooling to explicitly kill the tool process. - `widget_preview.logMessage`: sent for calls to `Logger` methods when in machine mode. This follows the same format as `daemon.logMessage`. This change also fixes and improves testing of `WidgetPreviewMachineAwareLogger` in `widget_preview_machine_test.dart` as the existing test validator did not cause tests to fail correctly. Fixes flutter#175002
danferreira
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…r#9977) flutter/flutter@87d5b75...973320c 2025-09-08 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from V_KooYFGRmGm6JrqM... to m7Qmvj5wtfPlMA8i8... (flutter/flutter#175067) 2025-09-08 engine-flutter-autoroll@skia.org Roll Packages from cab2ac2 to 24588c6 (1 revision) (flutter/flutter#175070) 2025-09-08 engine-flutter-autoroll@skia.org Roll Skia from e1a200e25998 to 0c2b0a00b7b5 (1 revision) (flutter/flutter#175065) 2025-09-08 engine-flutter-autoroll@skia.org Roll Dart SDK from c7518d480c73 to 83c6b6124380 (1 revision) (flutter/flutter#175064) 2025-09-08 engine-flutter-autoroll@skia.org Roll Skia from 87ee27220133 to e1a200e25998 (4 revisions) (flutter/flutter#175061) 2025-09-08 bkonyi@google.com [ Widget Preview ] Improve `--machine` output (flutter/flutter#175003) 2025-09-08 bruno.leroux@gmail.com Fix DropdownMenuFormField does not clear text field content on reset … (flutter/flutter#174937) 2025-09-08 engine-flutter-autoroll@skia.org Roll Skia from 310062ae6aee to 87ee27220133 (1 revision) (flutter/flutter#175051) 2025-09-08 engine-flutter-autoroll@skia.org Roll Dart SDK from 34cd2b4b56dd to c7518d480c73 (1 revision) (flutter/flutter#175049) 2025-09-07 engine-flutter-autoroll@skia.org Roll Skia from b00ca433657b to 310062ae6aee (1 revision) (flutter/flutter#175046) 2025-09-07 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from LRAtLJWUiZNmSVShG... to V_KooYFGRmGm6JrqM... (flutter/flutter#175040) 2025-09-07 engine-flutter-autoroll@skia.org Roll Skia from 064cf12ad0cc to b00ca433657b (1 revision) (flutter/flutter#175028) 2025-09-06 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from xG_uERsxHvUwFHpF2... to LRAtLJWUiZNmSVShG... (flutter/flutter#175018) 2025-09-06 engine-flutter-autoroll@skia.org Roll Dart SDK from f138e58bcf6d to 34cd2b4b56dd (2 revisions) (flutter/flutter#175017) 2025-09-06 engine-flutter-autoroll@skia.org Roll Skia from 5c60f8a66270 to 064cf12ad0cc (2 revisions) (flutter/flutter#175015) 2025-09-05 engine-flutter-autoroll@skia.org Roll Skia from f29ea2795934 to 5c60f8a66270 (2 revisions) (flutter/flutter#175010) 2025-09-05 108678139+manu-sncf@users.noreply.github.com Fix SliverMainAxisGroup scrollOffsetCorrection (flutter/flutter#174369) 2025-09-05 engine-flutter-autoroll@skia.org Roll Skia from 759f406584da to f29ea2795934 (3 revisions) (flutter/flutter#175000) 2025-09-05 engine-flutter-autoroll@skia.org Roll Dart SDK from 5e3afb74ffdf to f138e58bcf6d (15 revisions) (flutter/flutter#174994) 2025-09-05 engine-flutter-autoroll@skia.org Roll Packages from 98580c6 to cab2ac2 (2 revisions) (flutter/flutter#174998) 2025-09-05 41930132+hellohuanlin@users.noreply.github.com [ios26]fix host engine compile error (flutter/flutter#174723) 2025-09-05 30870216+gaaclarke@users.noreply.github.com Added note about how to compile licenses_cpp (flutter/flutter#174947) 2025-09-05 engine-flutter-autoroll@skia.org Roll Skia from 845ec125e94c to 759f406584da (3 revisions) (flutter/flutter#174992) 2025-09-05 mdebbar@google.com [web] Minor simplification in flutter.js loader (flutter/flutter#174963) 2025-09-05 30870216+gaaclarke@users.noreply.github.com deletes the old license checker. (flutter/flutter#174719) 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 stuartmorgan@google.com,tarrinneal@google.com 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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This change adds the following events:
widget_preview.initializing: sent immediately after the widget previewer starts. This event includes the PID of the process starting the widget previewer for use by tooling to explicitly kill the tool process.widget_preview.logMessage: sent for calls toLoggermethods when in machine mode. This follows the same format asdaemon.logMessage.This change also fixes and improves testing of
WidgetPreviewMachineAwareLoggerinwidget_preview_machine_test.dartas the existing test validator did not cause tests to fail correctly.Fixes #175002