fullscreen
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whatwg
Should browser UI be able to activate fullscreen even if iframe is missing allowfullscreen
...and if so, should fullscreenchange event fire? https://bugzilla.mozilla.org/show_bug.cgi?id=1302976#c8 (I think xidorn didn't mean sandboxed document but iframe without allowfullscreen)
Blink used to have an exemption for video.webkitEnterFullscreen which included native video controls, but I managed to removed it:
https://codereview.chromium.org/1237133002
https://codereview.chromium.org/1240573005
sure, but this is about browser UI stuff, like context menu or default UI for video element and such.
That is what I'm talking about too, the change "included native video controls." The context menu for video doesn't allow going fullscreen.
Currently Edge and Safari allow user to enter fullscreen regardless of whether it is allowed by DOM. Firefox is... something in-between, which doesn't make much sense. We want to align to one or the other.
I personally think disallowing it even via browser UI is safer (less troublesome), while @smaug---- thinks we should allow user to do what they want.
The specification can encourage one way or another, but we can't require anything here I think, although I guess we should say what happens with respect to events if an implementation allows it.
