Am 08.12.2010 21:40 schrieb Bjartur Thorlacius:
On Wed, 08 Dec 2010 19:47:34 -0000, Alex Komoroske
In particular, there is currently no good way for a web page to detect
that
it is a background tab and is thus completely invisible to the user,
Minor semantic nitpick: please use the term /does not have focus/ rather
than
/is a background tab/, as the latter is misleading in window managers
that don't
use tabs to represent (all) windows. [Ninja'd]
I am not too much familiar with the terminology here, but I humbly think
that not having focus does not necessarily mean a window is not visible.
I often have more than one visible window; maybe one where I am
currently working, and another one at the side with a football game
streamed or whatever. I wouldn't like the football stream to be stopped
when this window looses focus. But when the stream gets totally hidden,
be it that I open a new tab in the same window, or place some other
window in front of it, the streaming application might want to save
bandwidth by pausing the streaming of the visuals, while streaming on
the audio.
Thus, I'd consider an api for detecting the visibility state of every
HTML element useful (totally visible, partially visible, hidden - or a
percentage value).
