Create reusable-alert-dialogs-in-flutter.dart

Author: vandadnp

tipsandtricks/reusable-alert-dialogs-in-flutter/reusable-alert-dialogs-in-flutter.dart

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+// 🐦 Twitter                   https://twitter.com/vandadnp
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+
+import 'package:flutter/material.dart';
+
+@immutable
+class AlertDialogModel<T> {
+  final String title;
+  final String message;
+  final Map<String, T> buttons;
+
+  const AlertDialogModel({
+    required this.title,
+    required this.message,
+    required this.buttons,
+  });
+}
+
+@immutable
+class DeleteDialog extends AlertDialogModel<bool> {
+  const DeleteDialog({required String objName})
+      : super(
+          title: 'Delete $objName?',
+          message: 'Are you sure you want to delete this $objName?',
+          buttons: const {
+            'CANCEL': false,
+            'DELETE': true,
+          },
+        );
+}
+
+Future<bool> displayDeleteDialog(BuildContext context) =>
+    const DeleteDialog(objName: 'comment').present(context).then(
+          (value) => value ?? false,
+        );
+
+extension Present<T> on AlertDialogModel<T> {
+  Future<T?> present(BuildContext context) {
+    return showDialog<T?>(
+      context: context,
+      builder: (context) {
+        return AlertDialog(
+          title: Text(title),
+          content: Text(message),
+          actions: buttons.entries.map(
+            (entry) {
+              return TextButton(
+                child: Text(
+                  entry.key,
+                ),
+                onPressed: () {
+                  Navigator.of(context).pop(
+                    entry.value,
+                  );
+                },
+              );
+            },
+          ).toList(),
+        );
+      },
+    );
+  }
+}