Lightning Launcher

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====== About the script ======
  * Purpose : Show battery "charging" or "discharging" state
  * Author : Abednego JS ( https://plus.google.com/u/0/118095355037125433304 )
  * Link: https://plus.google.com/u/0/118095355037125433304/posts/UXfaG9YQyqX

====== How to use the script ======

This script will NOT showing anything when the power cable unplugged, just change the batstat value (in variable declaration or onReceive function) to change this. :D

Create shortcut "Lightning Action - Do Nothing" to run this script.

This version edited by Pierre to minimize resource usage + updated without user intervention,
The old version can be found here: https://www.dropbox.com/s/c0hews7f01b7l01/_AJS_script_oldBATSTATE.txt?dl=0
:)

====== Script code ======
======= Item resume script =======
<code>
LL.bindClass("android.os.BatteryManager");
LL.bindClass("android.content.BroadcastReceiver");
LL.bindClass("android.content.Intent");
LL.bindClass("android.content.IntentFilter");

// Update every 10s, this is a cyclic update. Improvement: use a receiver instead
var PERIOD = 10000;

var item = LL.getEvent().getItem();

function refresh() {
	var ifilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
	var batteryStatus = LL.getContext().registerReceiver(null, ifilter);

    var status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
    var isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL;

    var chargePlug = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
    var usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
    var acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;

    var batstat = "";

    if (isCharging)
    {
        if (usbCharge)
        {
            batstat = "usb charging . . .";
        }else
        {
            batstat = "AC charging . . .";
        }
    }
		
    item.setLabel(batstat);

    item.setTag(setTimeout(refresh, PERIOD));
}

refresh();
</code>

======= Item pause script =======
<code>
// important: preserve the battery life and clear timeouts when the item is paused to avoid useless background activity
var id = LL.getEvent().getItem().getTag();
if(id != null) {
    clearTimeout(parseInt(id));
}
</code>
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