RE: [PageVisibility] ALT+TAB behaviour

I just re-read the spec: http://w3c.github.io/page-visibility/


From my reading, it is clear that if a task switch causes the window to become fully covered by anything other than accessibility tools, the intent of the spec is that the page’s state should become hidden. In the same way, task switching back in to a user agent that was previously hidden should cause the page to become visible.

From: Todd Reifsteck
Sent: Thursday, March 12, 2015 9:39 AM
To: 'Ando Ando'; public-web-perf@w3.org
Subject: RE: [PageVisibility] ALT+TAB behaviour

From my perspective, you are observing bugs in each browser’s implementation of page visibility. We are tracking a bug in Internet Explorer backlog for this issue.

From: Ando Ando [mailto:agbb.cg@gmail.com]
Sent: Wednesday, March 11, 2015 11:21 AM
To: public-web-perf@w3.org<mailto:public-web-perf@w3.org>
Subject: [PageVisibility] ALT+TAB behaviour

hi, i need some help with this issue i posted in stackoverflow: https://stackoverflow.com/questions/28993157/visibilitychange-event-is-not-triggered-when-switching-program-window-with-altt


basically, i can reproduce in windows/osx in several browsers.

the thing is the event triggers as expected when i minimize/restore the browser window, or if i switch between tabs inside the browser. but it does not trigger if i ALT+TAB to a different program, or if I click in a different program in the taskbar, or even if i click the windows key to open the start menu, which covers the whole screen.

is this part of the spec?

please help me, any information will be appreciated.


thanks,


Andres Bolocco