Observers(window, "experimental-pane-loaded");
  },

  async _onCheckboxChanged(event) {
    const target = event.target;

    const slug = target.dataset.nimbusSlug;
    const branchSlug = target.dataset.nimbusBranchSlug;

    const enrolling = !(ExperimentAPI.manager.store.get(slug)?.active ?? false);

    let shouldRestart = false;
    if (this._firefoxLabs.get(slug).requiresRestart) {
      const buttonIndex = await confirmRestartPrompt(enrolling, 1, true, false);
      shouldRestart = buttonIndex === CONFIRM_RESTART_PROMPT_RESTART_NOW;

      if (!shouldRestart) {
        // The user declined to restart, so we will not enroll in the opt-in.
        target.checked = false;
        return;
      }
    }

    // Disable the checkbox so that the user cannot interact with it during enrollment.
    target.disabled = true;

    if (enrolling) {
      await this._firefoxLabs.enroll(slug, branchSlug);
    } else {
      this._firefoxLabs.unenroll(slug);
    }

    target.disabled = false;

    if (shouldRestart) {
      Services.startup.quit(
        Ci.nsIAppStartup.eAttemptQuit | Ci.nsIAppStartup.eRestart
      );
    }
  },

  _onNimbusUpdate(_event, { slug, active }) {
    if (this._firefoxLabs.get(slug)) {
      document.getElementById(slug).checked = active;
    }
  },

  _removeObservers() {
    ExperimentAPI.manager.store.off("update", this._onNimbusUpdate);

    Services.obs.removeObserver(this, ExperimentAPI.ENROLLMENTS_UPDATED);
  },

  // Reset the features to their default values
  async _resetAllFeatures() {
    for (const optIn of this._firefoxLabs.all()) {
      const enrolled =
        (await ExperimentAPI.manager.store.get(optIn.slug)?.active) ?? false;
      if (enrolled) {
        this._firefoxLabs.unenroll(optIn.slug);
      }
    }
  },

  _setCategoryVisibility(shouldHide) {
    document.getElementById("category-experimental").hidden = shouldHide;

    // Cache the visibility so we can show it quicker in subsequent loads.
    Services.prefs.setBoolPref(
      "browser.preferences.experimental.hidden",
      shouldHide
    );

    if (
      shouldHide &&
      document.getElementById("categories").selectedItem?.id ==
        "category-experimental"
    ) {
      // Leave the 'experimental' category if there are no available features
      gotoPref("general");
    }
  },

  observe(_subject, topic, _data) {
    switch (topic) {
      case ExperimentAPI.ENROLLMENTS_UPDATED:
        void this._queueRender();
    }
  },
};
PK