Prevent forward nagivation

lib/question_screens/question10.dart

@@ -1,5 +1,6 @@
 import 'dart:convert';
 import 'package:flutter/material.dart';
+import 'package:remar_flutter_app/question_screens/global.dart';
 
 
 class QuestionAnswer10Page extends StatefulWidget {
@@ -36,6 +37,9 @@ class _QuestionAnswerPage10State extends State<QuestionAnswer10Page> {
   }
 
   void loadQuestions() async {
+
+    enableForwardNavigation = false;
+
     // Load the JSON data from the file
     String jsonString = await DefaultAssetBundle.of(context)
         .loadString('assets/raw_eng/questions2Modified.json');
@@ -126,6 +130,7 @@ class _QuestionAnswerPage10State extends State<QuestionAnswer10Page> {
           selectedArea = answer;
           habitat = answer;
           widget.onHabitatSelected(habitat);
+          enableForwardNavigation = true;
         });
       },
       child: Container(

lib/question_screens/question11.dart

@@ -1,5 +1,6 @@
 import 'dart:convert';
 import 'package:flutter/material.dart';
+import 'package:remar_flutter_app/question_screens/global.dart';
 
 
 class QuestionAnswer11Page extends StatefulWidget {
@@ -34,6 +35,9 @@ class _QuestionAnswerPage11State extends State<QuestionAnswer11Page> {
   }
 
   void loadQuestions() async {
+
+    enableForwardNavigation = false;
+
     // Load the JSON data from the file
     String jsonString = await DefaultAssetBundle.of(context)
         .loadString('assets/raw_eng/questions2Modified.json');
@@ -116,6 +120,7 @@ class _QuestionAnswerPage11State extends State<QuestionAnswer11Page> {
           selectedArea = answer;
           state = answer;
           widget.onStateSelected(state);
+          enableForwardNavigation = true;
         });
       },
       child: Container(

lib/question_screens/question12.dart

@@ -1,5 +1,6 @@
 import 'dart:convert';
 import 'package:flutter/material.dart';
+import 'package:remar_flutter_app/question_screens/global.dart';
 import 'package:remar_flutter_app/question_screens/questions_utils.dart';
 
 class QuestionAnswer12Page extends StatefulWidget {
@@ -40,6 +41,7 @@ class _QuestionAnswerPage12State extends State<QuestionAnswer12Page> {
 
   void loadQuestions() async {
 
+   enableForwardNavigation = false;
 
     // Load the JSON data from the file
     String jsonString = await DefaultAssetBundle.of(context)
@@ -122,6 +124,7 @@ class _QuestionAnswerPage12State extends State<QuestionAnswer12Page> {
           selectedArea = answer;
           county = answer;
           widget.onCountySelected(county);
+          enableForwardNavigation = true;
         });
       },
       child: Container(

lib/question_screens/question13.dart

@@ -1,5 +1,6 @@
 import 'dart:convert';
 import 'package:flutter/material.dart';
+import 'package:remar_flutter_app/question_screens/global.dart';
 import 'package:remar_flutter_app/question_screens/questions_utils.dart';
 
 
@@ -42,6 +43,9 @@ class _QuestionAnswerPage13State extends State<QuestionAnswer13Page> {
   }
 
   void loadQuestions() async {
+
+    enableForwardNavigation = false;
+
     // Load the JSON data from the file
     String jsonString = await DefaultAssetBundle.of(context)
         .loadString('assets/raw_eng/questions2Modified.json');
@@ -78,49 +82,52 @@ class _QuestionAnswerPage13State extends State<QuestionAnswer13Page> {
 
     return Scaffold(
       body: ListView(
-        padding: EdgeInsets.all(16.0),
+        padding: const EdgeInsets.all(16.0),
         children: [
           Text(
             questionText,
-            style: TextStyle(
+            style: const TextStyle(
               fontWeight: FontWeight.bold,
               fontSize: 20.0,
             ),
           ),
-          SizedBox(height: 10.0),
+          const SizedBox(height: 10.0),
           Row(
             children: [
               buildCheckbox("Yes", selectedAnswer == "Yes"),
-              SizedBox(width: 10.0),
+              const SizedBox(width: 10.0),
               buildCheckbox("No", selectedAnswer == "No"),
-              SizedBox(width: 10.0),
+              const SizedBox(width: 10.0),
               buildCheckbox("I don't know", selectedAnswer == "I don't know"),
             ],
           ),
-          SizedBox(height: 20.0),
+          const SizedBox(height: 20.0),
           Text(
             extraDetailText,
-            style: TextStyle(
+            style: const TextStyle(
               fontSize: 16.0,
             ),
           ),
           SizedBox(height: 20.0),
           // Display answers only if "Yes" is selected
           if (displayAnswers)
+
             for (var area in displayedAreas) buildAnswerButton(area),
           if (!isExpanded &&
-              displayAnswers) // Hide "Name not in list" until "Yes" is selected
+              displayAnswers)
+            // Hide "Name not in list" until "Yes" is selected
             GestureDetector(
               onTap: () {
                 setState(() {
                   isExpanded = true;
+                  enableForwardNavigation = false;
                 });
               },
               child: Container(
                 color: Colors.green,
-                padding: EdgeInsets.all(12.0),
+                padding: const EdgeInsets.all(12.0),
                 margin: EdgeInsets.symmetric(vertical: 8.0),
-                child: Text(
+                child: const Text(
                   "Name not in list",
                   style: TextStyle(
                     color: Colors.white,
@@ -141,6 +148,7 @@ class _QuestionAnswerPage13State extends State<QuestionAnswer13Page> {
           selectedAnswer = title;
           // Update the flag based on the selected answer
           displayAnswers = selectedAnswer == "Yes";
+          enableForwardNavigation = true;
         });
       },
       child: Row(
@@ -176,8 +184,8 @@ class _QuestionAnswerPage13State extends State<QuestionAnswer13Page> {
       },
       child: Container(
         color: isSelected ? Colors.green : null,
-        padding: EdgeInsets.all(12.0),
-        margin: EdgeInsets.symmetric(vertical: 8.0),
+        padding: const EdgeInsets.all(12.0),
+        margin: const EdgeInsets.symmetric(vertical: 8.0),
         child: Text(
           answer,
           style: TextStyle(

lib/question_screens/question14.dart

@@ -151,7 +151,7 @@ class _QuestionAnswerPage14State extends State<QuestionAnswer14Page> {
               ),
             ),
           );
-          if(isMonthValid == true);
+
         });
 
       },

lib/question_screens/question15.dart

@@ -1,6 +1,7 @@
 import 'dart:convert';
 
 import 'package:flutter/material.dart';
+import 'package:remar_flutter_app/question_screens/global.dart';
 
 class QuestionAnswer15Page extends StatefulWidget {
   final String name;
@@ -34,6 +35,9 @@ class _QuestionAnswerPage15State extends State<QuestionAnswer15Page> {
   }
 
   void loadQuestions() async {
+
+  //  enableForwardNavigation = false;
+
     // Load the JSON data from the file
     String jsonString = await DefaultAssetBundle.of(context)
         .loadString('assets/raw_eng/questions2Modified.json');
@@ -124,6 +128,7 @@ class _QuestionAnswerPage15State extends State<QuestionAnswer15Page> {
           selectedAnswer = answer;
           additionalInfo = answer;
           widget.onAdditionalInfoSelected(additionalInfo);
+      //    enableForwardNavigation = true;
         });
       },
       child: Container(

lib/question_screens/question16.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
+import 'package:remar_flutter_app/question_screens/global.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 class QuestionAnswer16Page extends StatefulWidget {
@@ -29,6 +30,9 @@ class _QuestionAnswer16Page extends State<QuestionAnswer16Page> {
   }
 
   void loadQuestionData() async {
+
+    enableForwardNavigation = false;
+
     // Load JSON data from asset file
     String jsonString = await DefaultAssetBundle.of(context)
         .loadString('assets/raw_eng/questions2Modified.json');
@@ -43,10 +47,10 @@ class _QuestionAnswer16Page extends State<QuestionAnswer16Page> {
     // Assign values to variables
     setState(() {
       description = questionData['description'];
-
       choiceOneText = questionData['choiceOneText'];
       choiceTwoText = questionData['choiceTwoText'];
       choiceThreeText = questionData['choiceThreeText'];
+     // enableForwardNavigation = true;
     });
   }
 

lib/question_screens/question3.dart

@@ -5,6 +5,7 @@ import 'global.dart';
 
 List<String> yearList = []; // Declaration of yearList
 
+
 class QuestionAnswer3Page extends StatefulWidget {
 
   final String name;
@@ -30,8 +31,6 @@ class _QuestionAnswerPage3State extends State<QuestionAnswer3Page> {
   String questionText = '';
   String year='';
 
-  final ScrollController _controller = ScrollController();
-
 
   @override
   void initState() {

lib/question_screens/question4.dart

@@ -142,24 +142,24 @@ class _QuestionAnswerPage4State extends State<QuestionAnswer4Page> {
           }
 
           Container(
-              color: isSelected ? Colors.white : null,
-              padding: const EdgeInsets.all(1.0),
-              margin: const EdgeInsets.symmetric(vertical: 1.0),
-              child: Text(
-                answer,
-                style: TextStyle(
-                  color: isSelected ? Colors.white : Colors.black,
-                  fontWeight: FontWeight.bold,
-                ),
+            color: isSelected ? Colors.white : null,
+            padding: const EdgeInsets.all(1.0),
+            margin: const EdgeInsets.symmetric(vertical: 1.0),
+            child: Text(
+              answer,
+              style: TextStyle(
+                color: isSelected ? Colors.white : Colors.black,
+                fontWeight: FontWeight.bold,
               ),
-            );
-          if(isMonthValid == true);
+            ),
+          );
+
         });
 
       },
 
-    child: Container(
-      color: isSelected ? Colors.green : null,
+      child: Container(
+        color: isSelected ? Colors.green : null,
         padding: const EdgeInsets.all(1.0),
         margin: const EdgeInsets.symmetric(vertical: 1.0),
         child: Text(
@@ -175,34 +175,32 @@ class _QuestionAnswerPage4State extends State<QuestionAnswer4Page> {
 }
 
 void validateMonth(String month) {
-    var currentDate = DateTime.now();
-    var currentMonth = currentDate.month;
-    var selectedMonth =0;
-
-    switch (month) {
-      case "January" : (selectedMonth=1);
-      case "February" : (selectedMonth=2);
-      case "March" : (selectedMonth=3);
-      case "April" : (selectedMonth=4);
-      case "May" : (selectedMonth=5);
-      case "June" : (selectedMonth=6);
-      case "July" : (selectedMonth=7);
-      case "August" : (selectedMonth=8);
-      case "September" : (selectedMonth=9);
-      case "October" : (selectedMonth=10);
-      case "November" : (selectedMonth=11);
-      case "December" : (selectedMonth=12);
-    }
-
-
-
-    if(selectedMonth > currentMonth) {
-      isMonthValid = false;
-    }
-    else {
-      isMonthValid = true;
-    }
+  var currentDate = DateTime.now();
+  var currentMonth = currentDate.month;
+  var selectedMonth =0;
+
+  switch (month) {
+    case "January" : (selectedMonth=1);
+    case "February" : (selectedMonth=2);
+    case "March" : (selectedMonth=3);
+    case "April" : (selectedMonth=4);
+    case "May" : (selectedMonth=5);
+    case "June" : (selectedMonth=6);
+    case "July" : (selectedMonth=7);
+    case "August" : (selectedMonth=8);
+    case "September" : (selectedMonth=9);
+    case "October" : (selectedMonth=10);
+    case "November" : (selectedMonth=11);
+    case "December" : (selectedMonth=12);
+  }
 
-}
 
 
+  if(selectedMonth > currentMonth) {
+    isMonthValid = false;
+  }
+  else {
+    isMonthValid = true;
+  }
+
+}

lib/question_screens/question7.dart

@@ -1,5 +1,6 @@
 import 'dart:convert';
 import 'package:flutter/material.dart';
+import 'package:remar_flutter_app/question_screens/global.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 
@@ -34,6 +35,8 @@ class _QuestionAnswerPage7State extends State<QuestionAnswer7Page> {
   }
 
   void loadQuestions() async {
+
+    enableForwardNavigation = false;
     // Load the JSON data from the file
     String jsonString = await DefaultAssetBundle.of(context)
         .loadString('assets/raw_eng/questions2Modified.json');
@@ -114,7 +117,7 @@ class _QuestionAnswerPage7State extends State<QuestionAnswer7Page> {
           selectedArea = answer;
           intensity = answer;
           widget.onIntensitySelected(intensity);
-
+          enableForwardNavigation = true;
         });
       },
       child: Container(