[ContentChangeObserver] Introduce ContentChangeObserver::adjustObservedState

• Component: Layout and Rendering
• Status: RESOLVED FIXED

[zalan]

to be able to follow state changes.

[Radar WebKit Bug Importer]

<rdar://problem/48536737>

[zalan]

Created attachment 363422 [details]
Patch

[Simon Fraser (smfr)]

Comment on attachment 363422 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=363422&action=review

> LayoutTests/fast/events/touch/ios/visibility-change-happens-at-the-second-timer.html:3
> +<title>This test that we trigger hover when the content change starts as async but it turns into a sync style recalc.</title>

This tests that

> LayoutTests/fast/events/touch/ios/visibility-change-happens-at-the-second-timer.html:50
> +        document.body.offsetHeight;

Is this necessary?

> Source/WebCore/page/ios/ContentChangeObserver.cpp:143
>  void ContentChangeObserver::didContentVisibilityChange()

contentVisibilityDidChange? didContentVisibilityChange sounds like a question.

> Source/WebCore/page/ios/ContentChangeObserver.cpp:197
> +    if (event == Event::DidContentObservationStart) {

Use a switch so that you get warnings from the complier?

> Source/WebCore/page/ios/ContentChangeObserver.cpp:219
> +void ContentChangeObserver::signalContentChangeIfNeeded()

I think "notify" would be a better term to use.

> Source/WebCore/page/ios/ContentChangeObserver.h:93
> +    void addObservedDOMTimer(const DOMTimer&);
>      void removeObservedDOMTimer(const DOMTimer&);

Normally we'd say "startObservingFoo/stopObservingFoo".

> Source/WebCore/page/ios/ContentChangeObserver.h:115
> +    enum class Event {

Event is a bit of an overloaded term. Maybe OK here.

> Source/WebCore/page/ios/ContentChangeObserver.h:119
> +        DidContentObservationStart,
> +        DidInstallDOMTimer,
> +        DidRemoveDOMTimer,
> +        DidContentVisibilityChange

I think you can remove the "Did" from all these. Maybe use the past tense: Event::InstalledDOMTimer.

[zalan]

Committed r242321: <https://trac.webkit.org/changeset/242321>