On 28/04/2014 13:04, Alive wrote:
Hi,
I am not sure how does this matter if setVisible is too late or too
early while an app is launching.
The fact is while we launch an app, the previous app is still foreground
after it's going out of viewport && the foreground app is loaded.
Alive, I assume the app is kept active in order to keep its rendering or
is there any other reasons ?
If this is the former, I just attached a patch in order to keep the
rendering of the app unless there is a memory-pressure (see bug 1002430).
We were facing some critical cases as an app is killed while it's still
launching before,
See
https://github.com/mozilla-b2g/gaia/blob/master/apps/system/js/app_window_manager.js#L151
For the question here couldn't we just set docShell.isActive = true by
default?
We keep app opened with a system message with docShell.isActive ==
false, right ? Since it is up to the system app to decide when an app is
visible on the screen it is hard to make such an assumption :/
What will happen if the setVisible call is too late and what state if no
one calls setVisible on the iframe? Neither foreground nor background?
-Alive
Gabriele Svelto <[email protected] <mailto:[email protected]>> 於
2014/4/26 下午3:15 寫道：
On 26/04/2014 01:48, Jonas Sicking wrote:
That only works once an app is far enough along in the launch process
that it's able to run javascript. We need to give apps a high priority
before then.
Is gaia currently setting the "visibility flag" on <iframes> of
launching apps right away? If not, we should make that happen.
We should but I still wanted to measure how long it takes for the whole
process to happen. I just haven't got enough time to do it yet (still
too busy fixing v1.3t bugs).
Gabriele
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--
Alive C. Kuo, Senior Front-end/Software Engineer, FirefoxOS, MoCo.
Taiwan, Taipei office.
[email protected] <mailto:[email protected]>
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