On Wed, Jun 15, 2011 at 2:02 PM, Andrei Popescu <andr...@google.com> wrote:
> On Wed, Jun 15, 2011 at 5:58 PM, Brett Wilson <bre...@chromium.org> wrote:
>> On Wed, Jun 15, 2011 at 9:30 AM, Holger Freyther <ze...@selfish.org> wrote:
>>> On 06/15/2011 06:11 PM, laszlo.1.gom...@nokia.com wrote:
>>>> Hi,
>>>>
>>>
>>>>
>>>> The use-case for us is to enable content developers to implement 
>>>> rudimentary power management (e.g. to stop "expensive" operations on the 
>>>> page, perhaps save state). I'm not sure if this API is really meant for 
>>>> accurately reporting all the possible power management states of the 
>>>> system as Anssi pointed out.
>>>
>>> Okay, point on complexity taken. My question is what if you want to add
>>> complexity, is there something in the event that prevents that (I have no 
>>> idea
>>> about DOM compatibility issues)? Don't get me wrong I think having more 
>>> device
>>> support is great.
>>>
>>> My other complain was, it is too simple. E.g. 'isPlugged' has no guarantee
>>> that the battery is getting charged. Is this a problem?
>>
>> Why would a web page care about whether the battery is being charged
>> when the device is plugged in?
>>
>
> Because it would know not to start doing things that drain the
> battery. For instance, powering up a 3G antenna to download your
> latest emails could be annoying to users if the battery level is too
> low. 3G takes quite a bit of power and the device would be in danger
> of powering down.

But if the phone is plugged in it can't power down. Most of modern
phones don't switch off anymore even if you have the battery low and
you play games, surf WiFi, go 3G as soon as you plugged it in. What
Brett meant is that it's useless to know that the battery is charging
while the phone is plugged in, you just want to know that it will not
switch off in any case so you can do whatever you want.

>
> Thanks,
> Andrei
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>



-- 
Alexis Menard
Software Engineer
INdT Recife Brazil
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