wip

Author: lesnitsky

packages/firebase_ui_auth/example/lib/main.dart

@@ -267,6 +267,7 @@ class FirebaseAuthUIExample extends StatelessWidget {
             showMFATile: kIsWeb ||
                 platform == TargetPlatform.iOS ||
                 platform == TargetPlatform.android,
+            showUnlinkConfirmationDialog: true,
           );
         },
       },

packages/firebase_ui_auth/example/windows/flutter/generated_plugin_registrant.cc

@@ -7,12 +7,15 @@
 #include "generated_plugin_registrant.h"
 
 #include <desktop_webview_auth/desktop_webview_auth_plugin.h>
+#include <firebase_auth/firebase_auth_plugin_c_api.h>
 #include <firebase_core/firebase_core_plugin_c_api.h>
 #include <flutter_secure_storage_windows/flutter_secure_storage_windows_plugin.h>
 
 void RegisterPlugins(flutter::PluginRegistry* registry) {
   DesktopWebviewAuthPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("DesktopWebviewAuthPlugin"));
+  FirebaseAuthPluginCApiRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("FirebaseAuthPluginCApi"));
   FirebaseCorePluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FirebaseCorePluginCApi"));
   FlutterSecureStorageWindowsPluginRegisterWithRegistrar(

packages/firebase_ui_auth/example/windows/flutter/generated_plugins.cmake

@@ -4,6 +4,7 @@
 
 list(APPEND FLUTTER_PLUGIN_LIST
   desktop_webview_auth
+  firebase_auth
   firebase_core
   flutter_secure_storage_windows
 )

packages/firebase_ui_auth/lib/src/screens/profile_screen.dart

@@ -176,11 +176,13 @@ class _LinkedProvidersRow extends StatefulWidget {
   final FirebaseAuth? auth;
   final List<AuthProvider> providers;
   final VoidCallback onProviderUnlinked;
+  final bool showUnlinkConfirmationDialog;
 
   const _LinkedProvidersRow({
     this.auth,
     required this.providers,
     required this.onProviderUnlinked,
+    required this.showUnlinkConfirmationDialog,
   });
 
   @override
@@ -207,7 +209,31 @@ class _LinkedProvidersRowState extends State<_LinkedProvidersRow> {
       error = null;
     });
 
+    bool? confirmed = !widget.showUnlinkConfirmationDialog;
+
+    if (!confirmed) {
+      confirmed = await showAdaptiveDialog<bool?>(
+        context: context,
+        builder: (context) {
+          return UniversalAlert(
+            onConfirm: () {
+              Navigator.of(context).pop(true);
+            },
+            onCancel: () {
+              Navigator.of(context).pop(false);
+            },
+            title: 'Unlink provider',
+            confirmButtonText: 'Unlink',
+            cancelButtonText: 'Cancel',
+            message: 'Are you sure you want to unlink this provider?',
+          );
+        },
+      );
+    }
+
     try {
+      if (!(confirmed ?? false)) return;
+
       final user = widget.auth!.currentUser!;
       await user.unlink(providerId);
       await user.reload();
@@ -712,6 +738,10 @@ class ProfileScreen extends MultiProviderScreen {
   /// are ignored.
   final Widget? avatar;
 
+  /// Indicates wether a confirmation dialog should be shown when the user
+  /// tries to unlink a provider.
+  final bool showUnlinkConfirmationDialog;
+
   const ProfileScreen({
     super.key,
     super.auth,
@@ -726,6 +756,7 @@ class ProfileScreen extends MultiProviderScreen {
     this.cupertinoNavigationBar,
     this.actionCodeSettings,
     this.showMFATile = false,
+    this.showUnlinkConfirmationDialog = false,
   });
 
   Future<bool> _reauthenticate(BuildContext context) {
@@ -819,6 +850,7 @@ class ProfileScreen extends MultiProviderScreen {
                 auth: auth,
                 providers: linkedProviders,
                 onProviderUnlinked: providersScopeKey.rebuild,
+                showUnlinkConfirmationDialog: showUnlinkConfirmationDialog,
               ),
             );
           },

packages/firebase_ui_shared/lib/firebase_ui_shared.dart

@@ -9,3 +9,4 @@ export 'src/universal_scaffold.dart' show UniversalScaffold;
 export 'src/universal_icon.dart' show UniversalIcon;
 export 'src/universal_button.dart' show UniversalButton, ButtonVariant;
 export 'src/loading_button.dart' show LoadingButton;
+export 'src/universal_alert.dart' show UniversalAlert;

packages/firebase_ui_shared/lib/src/universal_alert.dart

@@ -0,0 +1,67 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+class UniversalAlert extends StatelessWidget {
+  final void Function() onConfirm;
+  final void Function() onCancel;
+
+  final String title;
+  final String message;
+
+  final String confirmButtonText;
+  final String cancelButtonText;
+
+  const UniversalAlert({
+    super.key,
+    required this.onConfirm,
+    required this.onCancel,
+    required this.title,
+    required this.confirmButtonText,
+    required this.cancelButtonText,
+    required this.message,
+  });
+
+  Widget adaptiveAction({
+    required BuildContext context,
+    required VoidCallback onPressed,
+    required Widget child,
+    bool isDestructiveAction = false,
+  }) {
+    final ThemeData theme = Theme.of(context);
+    switch (theme.platform) {
+      case TargetPlatform.android:
+      case TargetPlatform.fuchsia:
+      case TargetPlatform.linux:
+      case TargetPlatform.windows:
+        return TextButton(onPressed: onPressed, child: child);
+      case TargetPlatform.iOS:
+      case TargetPlatform.macOS:
+        return CupertinoDialogAction(
+          onPressed: onPressed,
+          isDestructiveAction: isDestructiveAction,
+          child: child,
+        );
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog.adaptive(
+      title: Text(title),
+      content: Text(message),
+      actions: [
+        adaptiveAction(
+          context: context,
+          onPressed: onConfirm,
+          child: Text(confirmButtonText),
+          isDestructiveAction: true,
+        ),
+        adaptiveAction(
+          context: context,
+          onPressed: onCancel,
+          child: Text(cancelButtonText),
+        ),
+      ],
+    );
+  }
+}