Bug 174626 – webkitfullscreenchange event not fired on iOS for vimeo.com videos

• Status: RESOLVED
• Resolution: INVALID
• Component: Media

[Antoine Quint]

Steps to reproduce:

1. go to https://vimeo.com/225249697
2. tap to start the video
3. inspect the page to find the <video> element
4. type the following in the Console: $0.addEventListener("webkitpresentationmodechanged", event => console.log(event.type))
5. type the following in the Console: $0.addEventListener("webkitfullscreenchange", event => console.log(event.type))
6. enter fullscreen
7. exit fullscreen

You'll notice that the "webkitpresentationmodechanged" event gets fired as the media enters and exits fullscreen, but "webkitfullscreenchange" isn't.

[Radar WebKit Bug Importer]

<rdar://problem/33375684>

[Antoine Quint]

This bug causes https://bugs.webkit.org/show_bug.cgi?id=174627.

[Antoine Quint]

This is not a recent regression, the same problem exists on iOS 10.3.2.

[Brent Fulgham]

This is correct. webkitfullscreenchange is dispatched on element fullscreen, not on video fullscreen.  

For video fullscreen we dispatch:
webkitbeginfullscreenEvent / webkitendfullscreenEvent

However, when using the new element fullscreen, you should now see webkitfullscreenchange, but not webkitpresentationmodechanged or webkitbeginfullscreenEvent