[iOS] REGRESSION(r271216) pointerevents/ios/pointer-events-no-mousedown-when-prevent-default-called-on-pointerdown.html is consistently failing

• Component: New Bugs
• Status: RESOLVED FIXED

[Devin Rousso]

```
--- ios-simulator-wk2-tests/build/OpenSource/layout-test-results/pointerevents/ios/pointer-events-no-mousedown-when-prevent-default-called-on-pointerdown-expected.txt
+++ ios-simulator-wk2-tests/build/OpenSource/layout-test-results/pointerevents/ios/pointer-events-no-mousedown-when-prevent-default-called-on-pointerdown-actual.txt
@@ -1,3 +1,7 @@
+CONSOLE MESSAGE: Error: assert_unreached: The mousedown event should not be dispatched after calling preventDefault() during pointerdown. Reached unreachable code
+CONSOLE MESSAGE: Error: assert_unreached: The mouseup event should not be dispatched after calling preventDefault() during pointerdown. Reached unreachable code
+
+Harness Error (FAIL), message = Error: assert_unreached: The mouseup event should not be dispatched after calling preventDefault() during pointerdown. Reached unreachable code
 
 PASS Testing that calling preventDefault() during a "pointerdown" event prevents compatibility events from being dispatched.
```

[Devin Rousso]

<rdar://problem/77070765>

[Devin Rousso]

Created attachment 428459 [details]
Patch

[Wenson Hsieh]

Comment on attachment 428459 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=428459&action=review

> Source/WebCore/ChangeLog:14
> +        Instead of fully removing the `CapturingData` entirely, change it's state such that it's

Nit - the first "it's" should be "its"

> Source/WebCore/page/PointerCaptureController.cpp:329
> -        if (capturingData.pointerType == touchPointerEventType() && capturingData.pointerIsPressed && !capturingData.cancelled)
> +        if (capturingData.pointerType == touchPointerEventType() && capturingData.state == CapturingData::State::Ready)

Was removing the check for `capturingData.pointerIsPressed` intentional?

[Devin Rousso]

Comment on attachment 428459 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=428459&action=review

>> Source/WebCore/page/PointerCaptureController.cpp:329
>> +        if (capturingData.pointerType == touchPointerEventType() && capturingData.state == CapturingData::State::Ready)
> 
> Was removing the check for `capturingData.pointerIsPressed` intentional?

Yes.  This was my attempt at "only include things that are active" in r271216, but as I mentioned in the ChangeLog because mouse events are dispatched after, it'd no longer be `pointerIsPressed` by that point anyways.

[Devin Rousso]

Created attachment 428565 [details]
Patch

[EWS]

Committed r277463 (237706@main): <https://commits.webkit.org/237706@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 428565 [details].