prefs.js

import Adw from 'gi://Adw';
import GLib from 'gi://GLib';
import GObject from 'gi://GObject';
import Gio from 'gi://Gio';

import {ExtensionPreferences} from 'resource:///org/gnome/Shell/Extensions/js/extensions/prefs.js';

const PROFILE_CHOICES = [
    'performance',
    'balanced',
    'power-saver'
];

function bindAdwComboRow(comboRow, settings, key, map_) {
    const initValue = settings.get_string(key);
    comboRow.selected = map_.indexOf(initValue);

    settings.connect(
        `changed::${key}`, () => {
            const idx = map_.indexOf(settings.get_string(key));
            comboRow.selected = idx;
        }
    );
    comboRow.connect('notify::selected', () => {
        const value = map_[comboRow.selected];
        settings.set_string(key, value);
    });
}

var General = GObject.registerClass({
    GTypeName: 'PowerProfileSwitcherPreferences',
    Template: GLib.Uri.resolve_relative(import.meta.url, './ui/general.ui', GLib.UriFlags.NONE),
    InternalChildren: [
        'ac_profile',
        'bat_profile',
        'threshold',
    ],
}, class General extends Adw.PreferencesPage {
    _init(settings, params = {}) {
        super._init(params);

        bindAdwComboRow(this._ac_profile, settings, 'ac', PROFILE_CHOICES);
        bindAdwComboRow(this._bat_profile, settings, 'bat', PROFILE_CHOICES);
        settings.bind(
            'threshold',
            this._threshold,
            'value',
            Gio.SettingsBindFlags.DEFAULT
        );
    }
});

export default class PowerProfileSwitcherPreferences extends ExtensionPreferences {
    fillPreferencesWindow(window) {
        const settings = this.getSettings();

        window.add(new General(settings));
    }
}