add Disable fiat mode

lib/src/screens/dashboard/widgets/transactions_page.dart

@@ -57,7 +57,9 @@ class TransactionsPage extends StatelessWidget {
                               formattedDate: DateFormat('HH:mm')
                                   .format(transaction.date),
                               formattedAmount: item.formattedCryptoAmount,
-                              formattedFiatAmount: item.formattedFiatAmount,
+                              formattedFiatAmount:
+                              dashboardViewModel.balanceViewModel.disableFiat
+                                  ? '' : item.formattedFiatAmount,
                               isPending: transaction.isPending));
                         }
 

lib/src/screens/exchange_trade/exchange_trade_page.dart

@@ -74,9 +74,12 @@ class ExchangeTradePage extends BasePage {
 }
 
 class ExchangeTradeForm extends StatefulWidget {
-  ExchangeTradeForm(this.exchangeTradeViewModel);
+  ExchangeTradeForm(this.exchangeTradeViewModel)
+  : disableFiat =
+      exchangeTradeViewModel.sendViewModel.balanceViewModel.disableFiat;
 
   final ExchangeTradeViewModel exchangeTradeViewModel;
+  final bool disableFiat;
 
   @override
   ExchangeTradeState createState() => ExchangeTradeState();
@@ -378,9 +381,11 @@ class ExchangeTradeState extends State<ExchangeTradeForm> {
                           });
                     },
                     actionLeftButton: () => Navigator.of(context).pop(),
-                    feeFiatAmount: widget.exchangeTradeViewModel.sendViewModel.pendingTransactionFeeFiatAmount
+                    feeFiatAmount: widget.disableFiat ? ''
+                        : widget.exchangeTradeViewModel.sendViewModel.pendingTransactionFeeFiatAmount
                         +  ' ' + widget.exchangeTradeViewModel.sendViewModel.fiat.title,
-                    fiatAmountValue: widget.exchangeTradeViewModel.sendViewModel
+                    fiatAmountValue: widget.disableFiat ? ''
+                        : widget.exchangeTradeViewModel.sendViewModel
                             .pendingTransactionFiatAmount +
                         ' ' +
                         widget.exchangeTradeViewModel.sendViewModel.fiat.title,

lib/src/screens/send/send_page.dart

@@ -386,16 +386,14 @@ class SendPage extends BasePage {
                     amount: S.of(context).send_amount,
                     amountValue:
                         sendViewModel.pendingTransaction!.amountFormatted,
-                    fiatAmountValue:
-                        sendViewModel.pendingTransactionFiatAmount +
-                            ' ' +
-                            sendViewModel.fiat.title,
+                    fiatAmountValue: sendViewModel.balanceViewModel.disableFiat
+                        ? '' : sendViewModel.pendingTransactionFiatAmount +
+                            ' ' + sendViewModel.fiat.title,
                     fee: S.of(context).send_fee,
                     feeValue: sendViewModel.pendingTransaction!.feeFormatted,
-                    feeFiatAmount:
-                        sendViewModel.pendingTransactionFeeFiatAmount +
-                            ' ' +
-                            sendViewModel.fiat.title,
+                    feeFiatAmount: sendViewModel.balanceViewModel.disableFiat
+                        ? '' : sendViewModel.pendingTransactionFeeFiatAmount +
+                            ' ' + sendViewModel.fiat.title,
                     outputs: sendViewModel.outputs,
                     rightButtonText: S.of(context).ok,
                     leftButtonText: S.of(context).cancel,

lib/src/screens/send/widgets/send_card.dart

@@ -332,6 +332,8 @@ class SendCardState extends State<SendCard>
                             ],
                           ),
                         )),
+                    sendViewModel.balanceViewModel.disableFiat ?
+                    Container () :
                     Padding(
                         padding: const EdgeInsets.only(top: 20),
                         child: BaseTextFormField(
@@ -438,8 +440,8 @@ class SendCardState extends State<SendCard>
                                           Padding(
                                               padding:
                                               EdgeInsets.only(top: 5),
-                                              child: Text(
-                                                  output
+                                              child: sendViewModel.balanceViewModel.disableFiat ?
+                                              Container () : Text(output
                                                       .estimatedFeeFiatAmount
                                                       +  ' ' +
                                                       sendViewModel

lib/src/screens/settings/settings.dart

@@ -29,18 +29,20 @@ class SettingsPage extends BasePage {
   @override
   Widget body(BuildContext context) {
     // FIX-ME: Added `context` it was not used here before, maby bug ?
-    return SectionStandardList(
+    return Observer(builder: (_) {
+      final sections = settingsViewModel.getSections();
+      return SectionStandardList(
         context: context,
-        sectionCount: settingsViewModel.sections.length,
+        sectionCount: sections.length,
         itemCounter: (int sectionIndex) {
-          if (sectionIndex < settingsViewModel.sections.length) {
-            return settingsViewModel.sections[sectionIndex].length;
+          if (sectionIndex < sections.length) {
+            return sections[sectionIndex].length;
           }
 
           return 0;
         },
         itemBuilder: (_, sectionIndex, itemIndex) {
-          final item = settingsViewModel.sections[sectionIndex][itemIndex];
+          final item = sections[sectionIndex][itemIndex];
 
           if (item is PickerListItem) {
             return Observer(builder: (_) {
@@ -94,5 +96,6 @@ class SettingsPage extends BasePage {
 
           return Container();
         });
+    });
   }
 }