Ability to edit Company model

lib/widget/company_detail.dart

@@ -1,7 +1,9 @@
 
 import 'package:InvenTree/api.dart';
 import 'package:InvenTree/inventree/company.dart';
+import 'package:InvenTree/widget/dialogs.dart';
 import 'package:InvenTree/widget/drawer.dart';
+import 'package:InvenTree/widget/fields.dart';
 import 'package:InvenTree/widget/refreshable_state.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
@@ -23,6 +25,8 @@ class _CompanyDetailState extends RefreshableState<CompanyDetailWidget> {
 
   final InvenTreeCompany company;
 
+  final _editCompanyKey = GlobalKey<FormState>();
+
   @override
   String getAppBarTitle(BuildContext context) { return "Company"; }
 
@@ -35,6 +39,72 @@ class _CompanyDetailState extends RefreshableState<CompanyDetailWidget> {
     // TODO
   }
 
+  void _saveCompany(Map<String, String> values) async {
+    Navigator.of(context).pop();
+
+    var response = await company.update(context, values: values);
+
+    refresh();
+  }
+
+  void editCompanyDialog() {
+
+    // Values which can be edited
+    var _name;
+    var _description;
+    var _website;
+
+    showFormDialog(context, "Edit Company",
+        key: _editCompanyKey,
+        actions: <Widget>[
+          FlatButton(
+            child: Text("Cancel"),
+            onPressed: () {
+              Navigator.pop(context);
+            },
+          ),
+          FlatButton(
+            child: Text("Save"),
+            onPressed: () {
+              if (_editCompanyKey.currentState.validate()) {
+                _editCompanyKey.currentState.save();
+
+                _saveCompany({
+                  "name": _name,
+                  "description": _description,
+                  "website": _website,
+                });
+              }
+            },
+          ),
+        ],
+        fields: <Widget>[
+          StringField(
+            label: "Company Name",
+            initial: company.name,
+            onSaved: (value) {
+              _name = value;
+            },
+          ),
+          StringField(
+            label: "Company Description",
+            initial: company.description,
+            onSaved: (value) {
+              _description = value;
+            },
+          ),
+          StringField(
+            label: "Website",
+            initial: company.website,
+            allowEmpty: true,
+            onSaved: (value) {
+              _website = value;
+            },
+          )
+        ]
+    );
+  }
+
   List<Widget> _companyTiles() {
 
     var tiles = List<Widget>();
@@ -51,7 +121,7 @@ class _CompanyDetailState extends RefreshableState<CompanyDetailWidget> {
         ),
         trailing: IconButton(
           icon: FaIcon(FontAwesomeIcons.edit),
-          onPressed: null,
+          onPressed: editCompanyDialog,
         ),
       ),
     ));

lib/widget/fields.dart

@@ -1,6 +1,36 @@
 
 import 'package:flutter/material.dart';
 
+
+class StringField extends TextFormField {
+
+  StringField({String label, String hint, String initial, Function onSaved, Function validator, bool allowEmpty = false}) :
+      super(
+        decoration: InputDecoration(
+          labelText: label,
+          hintText: hint
+        ),
+        initialValue: initial,
+        onSaved: onSaved,
+        validator: (value) {
+          print("Value: ${value}");
+          if (!allowEmpty && value.isEmpty) {
+            return "Value cannot be empty";
+          }
+
+          if (validator != null) {
+            return validator(value);
+          }
+
+          return null;
+        }
+      );
+}
+
+
+/*
+ * Helper class for quantity values
+ */
 class QuantityField extends TextFormField {
 
   QuantityField({String label = "", String hint = "", String initial = "", double max = null, TextEditingController controller}) :