add two decimal and add confirm dialog if press back button

lib/pages/rates/cargo_editor.dart

@@ -32,7 +32,7 @@ class _CargoEditorState extends State<CargoEditor> {
     if (widget.cargo != null) {
       _cargo = widget.cargo;
       _descController.text = _cargo.name;
-      _rateController.text = _cargo.rate.toString();
+      _rateController.text = _cargo.rate.toStringAsFixed(2);
     } else {
       _isNew = true;
     }
@@ -60,7 +60,11 @@ class _CargoEditorState extends State<CargoEditor> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: primaryColor,
           title: Text(AppTranslations.of(context).text("cargo.form.title")),

lib/pages/rates/cargo_type_list.dart

@@ -75,8 +75,8 @@ class _CargoTypeListState extends State<CargoTypeList> {
                               )));
                     },
                     child: Container(
-                      child: _row(cargo.name, "\$ " + cargo.rate.toString(),
-                          'per pound'),
+                      child: _row(cargo.name,
+                          "\$ " + cargo.rate.toStringAsFixed(2), 'per pound'),
                     ),
                   );
                 }),

lib/pages/rates/custom_editor.dart

@@ -33,7 +33,7 @@ class _CustomEditorState extends State<CustomEditor> {
     if (widget.custom != null) {
       _custom = widget.custom;
       _productController.text = _custom.productType;
-      _feeController.text = _custom.fee.toString();
+      _feeController.text = _custom.fee.toStringAsFixed(2);
     } else {
       _isNew = true;
     }
@@ -63,7 +63,11 @@ class _CustomEditorState extends State<CustomEditor> {
             icon: new Icon(
               CupertinoIcons.back,
             ),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: primaryColor,
           title:

lib/pages/rates/custom_list.dart

@@ -88,7 +88,7 @@ class _CustomListState extends State<CustomList> {
                     },
                     child: Container(
                       child: _row(
-                          custom.productType, "\$ " + custom.fee.toString()),
+                          custom.productType, "\$ " + custom.fee.toStringAsFixed(2)),
                     ),
                   );
                 }),

lib/pages/rates/discount_by_weight_editor.dart

@@ -62,7 +62,11 @@ class _DiscountByWeightEditorState extends State<DiscountByWeightEditor> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: primaryColor,
           title: Text(AppTranslations.of(context).text("discount.new")),

lib/pages/rates/shipment_rates.dart

@@ -138,10 +138,12 @@ class _ShipmentRatesState extends State<ShipmentRates> {
                 color: Colors.grey,
               ),
               _row("Free delivery within Yangon \nfor shipments over",
-                  "${rate.freeDeliveryWeight}", "pounds"),
-              _row("Delivery fees", "\$ ${rate.deliveryFee}",
-                  "below ${rate.freeDeliveryWeight} pounds"),
-              _row("Volumetric Ratio", "${rate.volumetricRatio}",
+                  "${rate.freeDeliveryWeight.toStringAsFixed(2)}", "pounds"),
+              _row("Delivery fees", "\$ ${rate.deliveryFee.toStringAsFixed(2)}",
+                  "below ${rate.freeDeliveryWeight.toStringAsFixed(2)} pounds"),
+              _row(
+                  "Volumetric Ratio",
+                  "${rate.volumetricRatio.toStringAsFixed(2)}",
                   "in3 per pound"),
               Divider(
                 color: Colors.grey,
@@ -179,7 +181,8 @@ class _ShipmentRatesState extends State<ShipmentRates> {
   List<Widget> getCargoWidget(List<CargoType> cargos) {
     return cargos.map((cargo) {
       return Container(
-        child: _row(cargo.name, "\$ " + cargo.rate.toString(), 'per pound'),
+        child: _row(
+            cargo.name, "\$ " + cargo.rate.toStringAsFixed(2), 'per pound'),
       );
     }).toList();
   }
@@ -187,7 +190,7 @@ class _ShipmentRatesState extends State<ShipmentRates> {
   List<Widget> getCustonWidget(List<CustomDuty> customs) {
     return customs.map((c) {
       return Container(
-        child: _row(c.productType, "\$ " + c.fee.toString(), ''),
+        child: _row(c.productType, "\$ " + c.fee.toStringAsFixed(2), ''),
       );
     }).toList();
   }
@@ -197,7 +200,7 @@ class _ShipmentRatesState extends State<ShipmentRates> {
     return discounts.map((d) {
       return Container(
         child: _row("${d.weight.toStringAsFixed(2)} lb",
-            "\$ " + d.discount.toString(), ''),
+            "\$ " + d.discount.toStringAsFixed(2), ''),
       );
     }).toList();
   }

lib/pages/rates/shipment_rates_calculate.dart

@@ -2,6 +2,7 @@ import 'package:fcs/domain/entities/carton.dart';
 import 'package:fcs/domain/entities/cargo_type.dart';
 import 'package:fcs/domain/entities/rate.dart';
 import 'package:fcs/helpers/theme.dart';
+import 'package:fcs/pages/main/util.dart';
 import 'package:fcs/pages/rates/model/shipment_rate_model.dart';
 import 'package:fcs/pages/widgets/display_text.dart';
 import 'package:fcs/pages/widgets/input_text.dart';
@@ -46,7 +47,7 @@ class _ShipmentRatesCalState extends State<ShipmentRatesCal> {
     _lengthController.text = '12';
     _widthController.text = '12';
     _heightController.text = '12';
-    _actualWeightCtl.text = "10";
+    _actualWeightCtl.text = "10.00";
     _calShipmentWeight();
   }
 
@@ -141,7 +142,11 @@ class _ShipmentRatesCalState extends State<ShipmentRatesCal> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back, color: primaryColor),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: Colors.white,
           shadowColor: Colors.transparent,
@@ -163,7 +168,7 @@ class _ShipmentRatesCalState extends State<ShipmentRatesCal> {
                   LocalText(context, "rate.delivery_fee",
                       color: primaryColor, fontSize: 16),
                   Text(
-                    ':\$ $_deliveryFee',
+                    ':\$ ${_deliveryFee.toStringAsFixed(2)}',
                     style: TextStyle(
                       color: primaryColor,
                       fontSize: 16,

lib/pages/rates/shipment_rates_edit.dart

@@ -38,8 +38,8 @@ class _ShipmentRatesEditState extends State<ShipmentRatesEdit> {
     Rate rate = shipmentRateModel.rate;
 
     _minWeight.text = rate.freeDeliveryWeight?.toStringAsFixed(2) ?? "";
-    _deliveryFee.text = rate.deliveryFee?.toString() ?? "";
-    _volumetricRatio.text = rate.volumetricRatio?.toString() ?? "";
+    _deliveryFee.text = rate.deliveryFee?.toStringAsFixed(2) ?? "";
+    _volumetricRatio.text = rate.volumetricRatio?.toStringAsFixed(2) ?? "";
   }
 
   @override
@@ -73,7 +73,11 @@ class _ShipmentRatesEditState extends State<ShipmentRatesEdit> {
             icon: new Icon(
               CupertinoIcons.back,
             ),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: primaryColor,
           title: Text(AppTranslations.of(context).text("rate.edit.title")),