refactor(neon): Make account selection reusable

packages/neon/neon/lib/src/widgets/account_selection_dialog.dart

@@ -0,0 +1,64 @@
+import 'package:flutter/material.dart';
+import 'package:meta/meta.dart';
+import 'package:neon/src/blocs/accounts.dart';
+import 'package:neon/src/theme/dialog.dart';
+import 'package:neon/src/widgets/account_tile.dart';
+import 'package:provider/provider.dart';
+
+@internal
+class NeonAccountSelectionDialog extends StatelessWidget {
+  const NeonAccountSelectionDialog({
+    this.highlightActiveAccount = false,
+    this.children,
+    super.key,
+  });
+
+  final bool highlightActiveAccount;
+  final List<Widget>? children;
+
+  @override
+  Widget build(final BuildContext context) {
+    final accountsBloc = Provider.of<AccountsBloc>(context, listen: false);
+    final accounts = accountsBloc.accounts.value;
+    final activeAccount = accountsBloc.activeAccount.value!;
+
+    final sortedAccounts = List.of(accounts)
+      ..removeWhere((final account) => account.id == activeAccount.id)
+      ..insert(0, activeAccount);
+
+    final tiles = sortedAccounts
+        .map<Widget>(
+          (final account) => NeonAccountTile(
+            account: account,
+            trailing: highlightActiveAccount && account.id == activeAccount.id ? const Icon(Icons.check_circle) : null,
+            onTap: () {
+              Navigator.of(context).pop(account);
+            },
+          ),
+        )
+        .toList();
+    if (highlightActiveAccount && accounts.length > 1) {
+      tiles.insert(1, const Divider());
+    }
+
+    final body = SingleChildScrollView(
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          ...tiles,
+          ...?children,
+        ],
+      ),
+    );
+
+    return Dialog(
+      child: IntrinsicHeight(
+        child: Container(
+          padding: const EdgeInsets.all(24),
+          constraints: NeonDialogTheme.of(context).constraints,
+          child: body,
+        ),
+      ),
+    );
+  }
+}

packages/neon/neon/lib/src/widgets/account_switcher_button.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+import 'package:meta/meta.dart';
+import 'package:neon/l10n/localizations.dart';
+import 'package:neon/src/blocs/accounts.dart';
+import 'package:neon/src/models/account.dart';
+import 'package:neon/src/pages/settings.dart';
+import 'package:neon/src/router.dart';
+import 'package:neon/src/widgets/account_selection_dialog.dart';
+import 'package:neon/src/widgets/user_avatar.dart';
+import 'package:provider/provider.dart';
+
+@internal
+class AccountSwitcherButton extends StatelessWidget {
+  const AccountSwitcherButton({
+    super.key,
+  });
+
+  Future<void> _onPressed(final BuildContext context) async {
+    final accountsBloc = Provider.of<AccountsBloc>(context, listen: false);
+
+    final account = await showDialog<Account>(
+      context: context,
+      builder: (final context) => NeonAccountSelectionDialog(
+        highlightActiveAccount: true,
+        children: [
+          ListTile(
+            leading: const Icon(Icons.settings),
+            title: Text(AppLocalizations.of(context).settingsAccountManage),
+            onTap: () {
+              Navigator.of(context).pop();
+              const SettingsRoute(initialCategory: SettingsCageories.accounts).push(context);
+            },
+          ),
+        ],
+      ),
+    );
+
+    if (account != null) {
+      accountsBloc.setActiveAccount(account);
+    }
+  }
+
+  @override
+  Widget build(final BuildContext context) {
+    final accountsBloc = Provider.of<AccountsBloc>(context, listen: false);
+    final account = accountsBloc.activeAccount.value!;
+
+    return IconButton(
+      onPressed: () async => _onPressed(context),
+      tooltip: AppLocalizations.of(context).settingsAccount,
+      icon: NeonUserAvatar(
+        account: account,
+      ),
+    );
+  }
+}

packages/neon/neon/lib/src/widgets/app_bar.dart

@@ -9,7 +9,7 @@ import 'package:neon/src/blocs/apps.dart';
 import 'package:neon/src/models/account.dart';
 import 'package:neon/src/models/app_implementation.dart';
 import 'package:neon/src/models/notifications_interface.dart';
-import 'package:neon/src/widgets/account_switcher.dart';
+import 'package:neon/src/widgets/account_switcher_button.dart';
 import 'package:neon/src/widgets/app_implementation_icon.dart';
 import 'package:neon/src/widgets/exception.dart';
 import 'package:neon/src/widgets/linear_progress_indicator.dart';