Improve widget for submitting user feedback

lib/settings/settings.dart

@@ -9,6 +9,7 @@ import 'package:inventree/widget/dialogs.dart';
 import 'package:flutter/material.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:inventree/l10.dart';
+import 'package:inventree/widget/submit_feedback.dart';
 
 import 'package:url_launcher/url_launcher.dart';
 
@@ -129,43 +130,14 @@ class _InvenTreeSettingsState extends State<InvenTreeSettingsWidget> {
     });
   }
 
-  void _sendReport(BuildContext context, String message) async {
-    bool result = await sentryReportMessage(message);
-
-    if (result) {
-      showSnackIcon(
-        L10().feedbackSuccess,
-        success: true,
-      );
-    } else {
-      showSnackIcon(
-        L10().feedbackError,
-        success: false,
-      );
-    }
-  }
-
   void _submitFeedback(BuildContext context) async {
 
-    TextEditingController _controller = TextEditingController();
+    Navigator.push(
-
+      context,
-    _controller.clear();
+      MaterialPageRoute(
-
+        builder: (context) => SubmitFeedbackWidget(),
-    showFormDialog(
+      )
-      L10().submitFeedback,
-      key: _feedbackKey,
-      callback: () {
-        _sendReport(context, _controller.text);
-      },
-      fields: <Widget>[
-        TextField(
-          decoration: InputDecoration(
-          ),
-          keyboardType: TextInputType.multiline,
-          maxLines: null,
-          controller: _controller
-        )
-      ]
     );
   }
+
 }

lib/widget/submit_feedback.dart

@@ -0,0 +1,94 @@
+
+
+import 'package:email_validator/email_validator.dart';
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:font_awesome_flutter/font_awesome_flutter.dart';
+import 'package:inventree/inventree/sentry.dart';
+import 'package:inventree/widget/snacks.dart';
+
+import '../l10.dart';
+
+class SubmitFeedbackWidget extends StatefulWidget {
+
+  @override
+  _SubmitFeedbackState createState() => _SubmitFeedbackState();
+
+}
+
+
+class _SubmitFeedbackState extends State<SubmitFeedbackWidget> {
+
+  final _formkey = new GlobalKey<FormState>();
+
+  String message = "";
+
+  @override
+  Widget build(BuildContext context) {
+
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(L10().submitFeedback),
+        actions: [
+          IconButton(
+            icon: FaIcon(FontAwesomeIcons.paperPlane),
+            onPressed: () async {
+              if (_formkey.currentState!.validate()) {
+                _formkey.currentState!.save();
+
+                // Upload
+                bool result = await sentryReportMessage(message);
+
+                if (result) {
+                  showSnackIcon(
+                    L10().feedbackSuccess,
+                    success: true,
+                  );
+                } else {
+                  showSnackIcon(
+                    L10().feedbackError,
+                    success: false
+                  );
+                }
+
+                // Exit
+                Navigator.of(context).pop();
+              }
+            },
+          )
+        ],
+      ),
+      body: Form(
+        key: _formkey,
+        child: SingleChildScrollView(
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.start,
+            mainAxisSize: MainAxisSize.max,
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              TextFormField(
+                decoration: InputDecoration(
+                  labelText: L10().feedback,
+                  labelStyle: TextStyle(fontWeight: FontWeight.bold),
+                ),
+                maxLines: null,
+                keyboardType: TextInputType.multiline,
+                validator: (value) {
+                  if (value == null || value.trim().isEmpty) {
+                    return L10().valueCannotBeEmpty;
+                  }
+                },
+                onSaved: (value) {
+                  if (value != null) {
+                    message = value;
+                  }
+                },
+              ),
+            ],
+          )
+        )
+      )
+    );
+  }
+
+}