Page visibility API

[charlieq]

just wondering whether cef complies to page visibility API described @: https://developer.mozilla.org/en-US/docs/Web/API/Page_Visibility_API.

[magreenblatt]

The URL that you linked has an example. Did you try it?

[charlieq]

I will. Thank you for response.

[objectOlolo]

There is is another example https://www.html5rocks.com/en/tutorials ... ity/intro/
and in cef 87 sample client works only window minimized case, but works fine in chromium, there was bug in chromium but it's solved in version 86.
Cases that doesn't works in cef, but works in chromium:
Another window maximized - expected visibleState hidden / actuall no reaction
Another window full cover browser window (works perfectly with explorer window) - expected visibleState hidden / actuall no reaction

[magreenblatt]

We don’t currently support occlusion detection in CEF. This would be very difficult to get working with a native (non-Views) top-level window.

[objectOlolo]

Could you please clarify or share some documentation or thoughts.
I though that CEF is kind of wrapper with API around chromium, so how cef can has issues with already working functinality undercover?