move WiFi to its own file

@@ -18,3 +18,4 @@ export 'src/objects/calendar_event.dart';
 export 'src/objects/driver_license.dart';
 export 'src/objects/email.dart';
 export 'src/objects/mobile_scanner_arguments.dart';
+export 'src/objects/wifi.dart';

@@ -5,11 +5,11 @@ import 'package:mobile_scanner/src/barcode_utility.dart';
 import 'package:mobile_scanner/src/enums/address_type.dart';
 import 'package:mobile_scanner/src/enums/barcode_format.dart';
 import 'package:mobile_scanner/src/enums/barcode_type.dart';
-import 'package:mobile_scanner/src/enums/encryption_type.dart';
 import 'package:mobile_scanner/src/enums/phone_type.dart';
 import 'package:mobile_scanner/src/objects/calendar_event.dart';
 import 'package:mobile_scanner/src/objects/driver_license.dart';
 import 'package:mobile_scanner/src/objects/email.dart';
+import 'package:mobile_scanner/src/objects/wifi.dart';
 
 /// Represents a single recognized barcode and its value.
 class Barcode {
@@ -309,27 +309,3 @@ class UrlBookmark {
       : title = data['title'] as String?,
         url = data['url'] as String?;
 }
-
-/// A wifi network parameters from a 'WIFI:' or similar QRCode type.
-class WiFi {
-  /// Gets the encryption type of the WIFI.
-  ///
-  /// See all [EncryptionType].
-  final EncryptionType encryptionType;
-
-  /// Gets the ssid of the WIFI.
-  ///
-  /// Returns null if not available.
-  final String? ssid;
-
-  /// Gets the password of the WIFI.
-  ///
-  /// Returns null if not available.
-  final String? password;
-
-  /// Create a [WiFi] from native data.
-  WiFi.fromNative(Map data)
-      : encryptionType = EncryptionType.values[data['encryptionType'] as int],
-        ssid = data['ssid'] as String?,
-        password = data['password'] as String?;
-}

+import 'package:mobile_scanner/src/enums/barcode_type.dart';
+import 'package:mobile_scanner/src/enums/encryption_type.dart';
+
+/// Wireless network information from [BarcodeType.wifi] barcodes.
+class WiFi {
+  /// Construct a new [WiFi] instance.
+  const WiFi({
+    this.encryptionType = EncryptionType.none,
+    this.ssid,
+    this.password,
+  });
+
+  /// Construct a new [WiFi] instance from the given [data].
+  factory WiFi.fromNative(Map<Object?, Object?> data) {
+    return WiFi(
+      encryptionType: EncryptionType.fromRawValue(
+        data['encryptionType'] as int? ?? 0,
+      ),
+      ssid: data['ssid'] as String?,
+      password: data['password'] as String?,
+    );
+  }
+
+  /// The encryption type of the wireless network.
+  final EncryptionType encryptionType;
+
+  /// The ssid of the wireless network.
+  final String? ssid;
+
+  /// The password of the wireless network.
+  final String? password;
+}