Refactor: Move GObject.registerClass calls into static init. blocks

Do that since it standardizes the code and also is just cleaner.

src/extensionModules/BoxOrderManager.js

@@ -10,11 +10,15 @@ import * as Main from "resource:///org/gnome/shell/ui/main.js";
  * what is really useable by the other extension code.
  * It's basically a heavy wrapper around the box orders stored in the settings.
  */
-const BoxOrderManager = GObject.registerClass({
+export default class BoxOrderManager extends GObject.Object {
+    static {
+        GObject.registerClass({
             Signals: {
                 "appIndicatorReady": {}
             }
-}, class BoxOrderManager extends GObject.Object {
+        }, this);
+    }
+
     #appIndicatorReadyHandlerIdMap;
     #appIndicatorItemApplicationRoleMap;
     #settings;
@@ -267,6 +271,4 @@ const BoxOrderManager = GObject.registerClass({
         saveBoxOrderToSettings(boxOrders.center, "center");
         saveBoxOrderToSettings(boxOrders.right, "right");
     }
-});
+}
-
-export default BoxOrderManager;

src/prefsModules/PrefsBoxOrderListBox.js

@@ -9,7 +9,9 @@ import { ExtensionPreferences } from "resource:///org/gnome/Shell/Extensions/js/
 import PrefsBoxOrderItemRow from "./PrefsBoxOrderItemRow.js";
 import PrefsBoxOrderListEmptyPlaceholder from "./PrefsBoxOrderListEmptyPlaceholder.js";
 
-const PrefsBoxOrderListBox = GObject.registerClass({
+export default class PrefsBoxOrderListBox extends Gtk.ListBox {
+    static {
+        GObject.registerClass({
             GTypeName: "PrefsBoxOrderListBox",
             Template: GLib.uri_resolve_relative(import.meta.url, "../ui/prefs-box-order-list-box.ui", GLib.UriFlags.NONE),
             Properties: {
@@ -26,7 +28,9 @@ const PrefsBoxOrderListBox = GObject.registerClass({
                     param_types: [PrefsBoxOrderItemRow, GObject.TYPE_STRING]
                 }
             }
-}, class PrefsBoxOrderListBox extends Gtk.ListBox {
+        }, this);
+    }
+
     #settings;
     #rowSignalHandlerIds = new Map();
 
@@ -143,6 +147,4 @@ const PrefsBoxOrderListBox = GObject.registerClass({
             }
         }
     }
-});
+}
-
-export default PrefsBoxOrderListBox;

src/prefsModules/PrefsBoxOrderListEmptyPlaceholder.js

@@ -4,10 +4,14 @@ import Gtk from "gi://Gtk";
 import GObject from "gi://GObject";
 import GLib from "gi://GLib";
 
-const PrefsBoxOrderListEmptyPlaceholder = GObject.registerClass({
+export default class PrefsBoxOrderListEmptyPlaceholder extends Gtk.Box {
+    static {
+        GObject.registerClass({
             GTypeName: "PrefsBoxOrderListEmptyPlaceholder",
             Template: GLib.uri_resolve_relative(import.meta.url, "../ui/prefs-box-order-list-empty-placeholder.ui", GLib.UriFlags.NONE)
-}, class PrefsBoxOrderListEmptyPlaceholder extends Gtk.Box {
+        }, this);
+    }
+
     // Handle a new drop on `this` properly.
     // `value` is the thing getting dropped.
     onDrop(_target, value, _x, _y) {
@@ -28,6 +32,4 @@ const PrefsBoxOrderListEmptyPlaceholder = GObject.registerClass({
         valueListBox.saveBoxOrderToSettings();
         valueListBox.determineRowMoveActionEnable();
     }
-});
+}
-
-export default PrefsBoxOrderListEmptyPlaceholder;

src/prefsModules/PrefsPage.js

@@ -11,7 +11,9 @@ import PrefsBoxOrderListEmptyPlaceholder from "./PrefsBoxOrderListEmptyPlacehold
 // Imports to make UI file work.
 import PrefsBoxOrderListBox from "./PrefsBoxOrderListBox.js";
 
-const PrefsPage = GObject.registerClass({
+export default class PrefsPage extends Adw.PreferencesPage {
+    static {
+        GObject.registerClass({
             GTypeName: "PrefsPage",
             Template: GLib.uri_resolve_relative(import.meta.url, "../ui/prefs-page.ui", GLib.UriFlags.NONE),
             InternalChildren: [
@@ -19,7 +21,9 @@ const PrefsPage = GObject.registerClass({
                 "center-box-order-list-box",
                 "right-box-order-list-box"
             ]
-}, class PrefsPage extends Adw.PreferencesPage {
+        }, this);
+    }
+
     constructor(params = {}) {
         super(params);
 
@@ -172,6 +176,4 @@ const PrefsPage = GObject.registerClass({
             return;
         }
     }
-});
+}
-
-export default PrefsPage;