update rate

lib/pages/rates/cargo_editor.dart

@@ -6,6 +6,9 @@ import 'package:fcs/pages/widgets/input_text.dart';
 import 'package:fcs/pages/widgets/progress.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import 'model/shipment_rate_model.dart';
 
 class CargoEditor extends StatefulWidget {
   final CargoType cargo;
@@ -21,6 +24,8 @@ class _CargoEditorState extends State<CargoEditor> {
 
   bool _isLoading = false;
   CargoType _cargo;
+  bool _isNew = false;
+
   @override
   void initState() {
     super.initState();
@@ -28,6 +33,8 @@ class _CargoEditorState extends State<CargoEditor> {
       _cargo = widget.cargo;
       _descController.text = _cargo.name;
       _rateController.text = _cargo.rate.toString();
+    } else {
+      _isNew = true;
     }
   }
 
@@ -57,6 +64,12 @@ class _CargoEditorState extends State<CargoEditor> {
           ),
           backgroundColor: primaryColor,
           title: Text(AppTranslations.of(context).text("cargo.form.title")),
+          actions: [
+            IconButton(
+              icon: Icon(Icons.delete),
+              onPressed: _delete,
+            )
+          ],
         ),
         body: Container(
           padding: EdgeInsets.all(18),
@@ -71,9 +84,8 @@ class _CargoEditorState extends State<CargoEditor> {
                   ],
                 ),
               ),
-              widget.cargo == null
-                  ? fcsButton(context, "Create", callack: () {})
-                  : fcsButton(context, "Save", callack: () {}),
+              fcsButton(context, getLocalString(context, "btn.save"),
+                  callack: _save),
               SizedBox(height: 10)
             ],
           ),
@@ -81,4 +93,52 @@ class _CargoEditorState extends State<CargoEditor> {
       ),
     );
   }
+
+  _save() async {
+    setState(() {
+      _isLoading = true;
+    });
+    try {
+      var shipmentRateModel =
+          Provider.of<ShipmentRateModel>(context, listen: false);
+      CargoType _cargo = CargoType(
+          name: _descController.text, rate: double.parse(_rateController.text));
+      if (_isNew) {
+        await shipmentRateModel.addCargoType(_cargo);
+      } else {
+        _cargo.id = widget.cargo.id;
+        await shipmentRateModel.updateCargoType(_cargo);
+      }
+      Navigator.pop(context);
+    } catch (e) {
+      showMsgDialog(context, "Error", e.toString());
+    } finally {
+      setState(() {
+        _isLoading = false;
+      });
+    }
+  }
+
+  _delete() {
+    showConfirmDialog(
+        context, "cargo_type.edit.delete.confirm", _deleteCargoType);
+  }
+
+  _deleteCargoType() async {
+    setState(() {
+      _isLoading = true;
+    });
+    try {
+      var shipmentRateModel =
+          Provider.of<ShipmentRateModel>(context, listen: false);
+      await shipmentRateModel.deleteCargoType(widget.cargo.id);
+      Navigator.pop(context);
+    } catch (e) {
+      showMsgDialog(context, "Error", e.toString());
+    } finally {
+      setState(() {
+        _isLoading = false;
+      });
+    }
+  }
 }