extension.ts

import Gio from 'gi://Gio';
import GLib from 'gi://GLib';
import { Extension } from 'resource:///org/gnome/shell/extensions/extension.js';
import Hakawaka from "./extension/hakawaka.js";

export default class HakaWakaExtension extends Extension {
  private gsettings?: Gio.Settings;
  private gsettingsId?: number;
  private container?: InstanceType<typeof Hakawaka>
  private updateId?: number;

  enable() {
    this.gsettings = this.getSettings();
    this.gsettingsId = this.gsettings.connect("changed", this.startTimer.bind(this))

    this.container = new Hakawaka(this.gsettings);
    this.container.place(this.uuid)

    this.startTimer()
  }

  disable() {
    if (this.gsettingsId) {
      this.gsettings?.disconnect(this.gsettingsId)
      this.gsettingsId = undefined
    }

    if (this.updateId) {
      GLib.source_remove(this.updateId);
      this.updateId = undefined;
    }

    this.container?.destroy()
    this.container = undefined;

    this.gsettings = undefined;
  }

  private startTimer() {
    if (this.updateId) {
      GLib.source_remove(this.updateId);
      this.updateId = undefined;
    }

    this.container?.update();
    const interval = this.gsettings?.get_int("refresh-interval") || 10;

    this.updateId = GLib.timeout_add_seconds(
      GLib.PRIORITY_DEFAULT,
      interval * 60,
      () => {
        this.container?.update()
        return GLib.SOURCE_CONTINUE
      }
    )
  }
}