Alignment with W3C Battery API

[pContat]

trafficstars

Addition of the methode navigator.getBattery which return a BatteryManager object using promises to align with the W3C API

Here is the associate Jira issue.

Some notes on the proposed changes:

• The previous navigator.battery and the new navigator.getBattery can't run together on android ( only one callbackContext allowed with the current version)
• chargingtime and dischargingtime value aren't available for now (since that data is not provided by default at least on Android and FirefoxOS)

Also, I was not clear whether there is a coding guideline (formatting, etc) ? I tried to keep it close to the original

[sarangan12]

Let there be tests

[cordova-qa]

Cordova CI Build has one or more failures.

Commit - Link Dashboard - Link

Builder Name	Console Output	Test Report	Device Logs
Windows 8.1 Store	Link	Link	Link
Windows 10 Store	Link	Link	Link
Windows 8.1 Phone	Link	Link	Link
iOS	Link	Link	Link
Android Mac	Link	Link	Link

[halindrome]

Is there some way we can rejuvenate this PR? I think this is critical functionality - in particular since the existing implementation does not seem to work on Android 7 as far as I can tell.

[achs0]

I'm a little confused. It seems, that this is implemented in phonegap (the "mirror" of cordova): https://github.com/phonegap/phonegap-plugin-battery-status

[janpio]

That is a fork of this plugin:

This branch is 15 commits ahead, 33 commits behind apache:master.

So while someone did 15 commits on the fork, it also didn't get 33 commits that happened here.

[macdonst]

@achs0 @janpio yeah, we forked the plugin so we could update the API as part of our rejuvenation campaign of plugin api's. The plan was to send a PR to the cordova battery status plugin once we had android, ios and windows done. We have a partial windows implementation but it's not ready yet.