nixos-configs/devices/wim/config/ags/js/bar/buttons/battery.js

import Battery from 'resource:///com/github/Aylur/ags/service/battery.js';
import { Label, Icon, Box } from 'resource:///com/github/Aylur/ags/widget.js';

import Separator from '../../misc/separator.js';


const Indicator = () => Icon({
    className: 'battery-indicator',
    binds: [['icon', Battery, 'icon-name']],
    connections: [[Battery, self => {
        self.toggleClassName('charging', Battery.charging);
        self.toggleClassName('charged', Battery.charged);
        self.toggleClassName('low', Battery.percent < 20);
    }]],
});

const LevelLabel = props => Label({
    ...props,
    className: 'label',
    connections: [[Battery, self => self.label = `${Battery.percent}%`]],
});

export default () => Box({
    className: 'toggle-off battery',
    children: [
        Indicator(),
        Separator(5),
        LevelLabel(),
    ],
});