[blink-dev] Intent to Ship: Battery Status API

[Tim Volodine]

Contact email:

timvo...@chromium.org

Specification:

https://dvcs.w3.org/hg/dap/raw-file/default/battery/Overview.html

Summary:

The Battery Status API provides the ability to obtain the device battery information such as level, charging state and charging/discharging times and to receive notifications when these attributes change.

Intent to implement:

https://groups.google.com/a/chromium.org/d/msg/blink-dev/fzoG6Phr09k/dnAEzkgMA1YJ

Is this feature supported on all five Blink platforms (Windows, Mac, Linux, Chrome OS and Android)?

Yes

Demo link:

http://jsbin.com/battery-status-test (meant for testing)

Debuggability:

We might consider adding some support for setting simulated battery values for debugging on devices which don't have a battery.

Compatibility risk:

The previous version of this API has shipped only in Firefox. Since then we have amended the specification to be asynchronous, i.e. using a promise. We have discussed the modified version of the specification with Mozilla and the W3C DAP working group extensively (on public-de...@w3.org). Mozilla has agreed with the modification.

OWP launch tracking bug:

http://crbug.com/122593

Link to entry on the feature dashboard:

http://www.chromestatus.com/features/4537134732017664

thanks,

Tim

[PhistucK]

Does Mozilla have concrete plans to implement and ship the updated API?

☆PhistucK

To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+...@chromium.org.

[Ehsan Akhgari]

On Thu, Aug 7, 2014 at 1:55 PM, PhistucK <phis...@gmail.com> wrote:

Does Mozilla have concrete plans to implement and ship the updated API?

Yes, we do.  See https://bugzilla.mozilla.org/show_bug.cgi?id=1047119 please.

--

Ehsan

[PhistucK]

This is great!

☆PhistucK

[Eric Seidel]

LGTM. But I'm not sure your demo works on mac... It appears to have
a divide by zero problem?

Battery Status API
________________________________
charging false
chargingTime Infinity
dischargingTime Infinity
battery level1
________________________________
promise status success
number of updates 3

[PhistucK]

It does not seem to work for me (a Windows 7 Enterprise notebook), too -

Battery Status API

charging true

chargingTime 0 (0h:0m:0s)

dischargingTime Infinity

battery level 1

promise status success

number of updates 1

At first I was charging, but I unplugged it and nothing changed. I waited a minute or so and refreshed. Nothing changes. I restarted the browser. Same result.

:(

☆PhistucK

[Tim Volodine]

eseidel@:

It should work on mac, the Inf values are reported when the chargingTime/dischargingTime are not known. If you wait a bit longer the dischargingTime should update, same for chargingTime when it's charging.

phistuck@:

the patch for windows hasn't landed yet, it's currently under review.

https://codereview.chromium.org/447853002/

(it should work if you patch it locally).

[PhistucK]

Your intent says it is supported on all of the platforms...

Do you intend to ship it only after the Windows implementation receives some testing?

Also, the Android issue is not marked as fixed yet - crbug.com/360068 - is the implementation complete there?

☆PhistucK

[Tim Volodine]

yes, of course we will make sure it is tested before it ships.

I have marked the mentioned android bug as fixed now.

Can we get more LGTMs on this thread to ship this api?

I think at least 2 more lgtms are required.

thanks,

Tim

[Darin Fisher]

LGTM

[Adam Barth]

LGTM