Final version

gui/lib/src/page/abstract/page.dart

@@ -0,0 +1,78 @@
+import 'package:fluent_ui/fluent_ui.dart';
+import 'package:reboot_launcher/src/dialog/abstract/info_bar.dart' as messenger;
+import 'package:reboot_launcher/src/page/abstract/page_setting.dart';
+import 'package:reboot_launcher/src/page/abstract/page_type.dart';
+
+abstract class RebootPage extends StatefulWidget {
+  const RebootPage({super.key});
+
+  String get name;
+
+  String get iconAsset;
+
+  RebootPageType get type;
+
+  int get index => type.index;
+
+  List<PageSetting> get settings;
+
+  bool get hasButton;
+
+  @override
+  RebootPageState createState();
+}
+
+abstract class RebootPageState<T extends RebootPage> extends State<T> with AutomaticKeepAliveClientMixin<T> {
+  @override
+  Widget build(BuildContext context) {
+    super.build(context);
+    var buttonWidget = button;
+    if(buttonWidget == null) {
+      return _listView;
+    }
+
+    return Column(
+      children: [
+        Expanded(
+          child: _listView,
+        ),
+        const SizedBox(
+          height: 8.0,
+        ),
+        ConstrainedBox(
+            constraints: const BoxConstraints(
+              maxWidth: 1000
+            ),
+            child: buttonWidget
+        )
+      ],
+    );
+  }
+
+  OverlayEntry showInfoBar(dynamic text, {InfoBarSeverity severity = InfoBarSeverity.info, bool loading = false, Duration? duration = snackbarShortDuration, Widget? action}) => messenger.showInfoBar(
+      text,
+      pageType: widget.type,
+      severity: severity,
+      loading: loading,
+      duration: duration,
+      action: action
+  );
+
+  ListView get _listView => ListView.builder(
+    itemCount: settings.length * 2,
+    itemBuilder: (context, index) => index.isEven ? Align(
+      alignment: Alignment.center,
+      child: settings[index ~/ 2],
+    ) : const SizedBox(height: 8.0),
+  );
+
+  @override
+  bool get wantKeepAlive => true;
+
+  List<Widget> get settings;
+
+  Widget? get button;
+}
+
+
+

gui/lib/src/page/abstract/page_setting.dart

@@ -0,0 +1,26 @@
+class PageSetting {
+  final String name;
+  final String description;
+  final String? content;
+  final List<PageSetting>? children;
+  final int pageIndex;
+
+  PageSetting(
+      {required this.name,
+      required this.description,
+      this.content,
+      this.children,
+      this.pageIndex = -1});
+
+  PageSetting withPageIndex(int pageIndex) => this.pageIndex != -1
+      ? this
+      : PageSetting(
+          name: name,
+          description: description,
+          content: content,
+          children: children,
+          pageIndex: pageIndex);
+
+  @override
+  String toString() => "$name: $description";
+}

gui/lib/src/page/abstract/page_type.dart

@@ -0,0 +1,9 @@
+enum RebootPageType {
+  play,
+  host,
+  browser,
+  authenticator,
+  matchmaker,
+  info,
+  settings
+}