TF-359 Open mailto link outside the Tmail app in mobile/tablet

lib/main/bindings/core/core_bindings.dart

@@ -4,6 +4,7 @@ import 'package:fluttertoast/fluttertoast.dart';
 import 'package:get/get.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:tmail_ui_user/features/email/data/local/html_analyzer.dart';
+import 'package:tmail_ui_user/main/utils/email_receive_manager.dart';
 
 class CoreBindings extends Bindings {
 
@@ -16,6 +17,7 @@ class CoreBindings extends Bindings {
     _bindingTransformer();
     _bindingToast();
     _bindingDeviceManager();
+    _bindingReceivingSharingStream();
   }
 
   void _bindingAppImagePaths() {
@@ -47,4 +49,8 @@ class CoreBindings extends Bindings {
     Get.put(DeviceInfoPlugin());
     Get.put(DeviceManager(Get.find<DeviceInfoPlugin>()));
   }
+
+  void _bindingReceivingSharingStream() {
+    Get.put(EmailReceiveManager());
+  }
 }

lib/main/utils/email_receive_manager.dart

@@ -0,0 +1,40 @@
+
+import 'package:jmap_dart_client/jmap/mail/email/email_address.dart';
+import 'package:receive_sharing_intent/receive_sharing_intent.dart';
+import 'package:rxdart/rxdart.dart';
+
+class EmailReceiveManager {
+
+  BehaviorSubject<EmailAddress?> _pendingEmailAddressInfo = BehaviorSubject.seeded(null);
+  BehaviorSubject<EmailAddress?> get pendingEmailAddressInfo => _pendingEmailAddressInfo;
+
+  Stream<Uri?> get receivingSharingStream {
+    return Rx.merge([
+      Stream.fromFuture(ReceiveSharingIntent.getInitialTextAsUri()),
+      ReceiveSharingIntent.getTextStreamAsUri()
+    ]);
+  }
+  Stream<List<SharedMediaFile>> get receivingSharingStream2 {
+    return Rx.merge([
+      Stream.fromFuture(ReceiveSharingIntent.getInitialMedia()),
+      ReceiveSharingIntent.getMediaStream()
+    ]);
+  }
+
+  void setPendingEmailAddress(EmailAddress emailAddress) async {
+    clearPendingEmailAddress();
+    _pendingEmailAddressInfo.add(emailAddress);
+  }
+
+  void clearPendingEmailAddress() {
+    if(_pendingEmailAddressInfo.isClosed) {
+      _pendingEmailAddressInfo = BehaviorSubject.seeded(null);
+    } else {
+      _pendingEmailAddressInfo.add(null);
+    }
+  }
+
+  void closeEmailReceiveManagerStream() {
+    _pendingEmailAddressInfo.close();
+  }
+}