Display purchase order info

lib/inventree/purchase_order.dart

@@ -30,6 +30,13 @@ class InvenTreePurchaseOrder extends InvenTreeModel {
 
   InvenTreePurchaseOrder() : super();
 
+  @override
+  Map<String, String> defaultGetFilters() {
+    return {
+      "supplier_detail": "true",
+    };
+  }
+
   @override
   Map<String, String> defaultListFilters() {
     return {
@@ -55,11 +62,15 @@ class InvenTreePurchaseOrder extends InvenTreeModel {
 
   int get supplierId => jsondata['supplier'] ?? -1;
 
-  InvenTreeCompany get supplier {
+  InvenTreeCompany? get supplier {
 
-    dynamic supplier_detail = jsondata["supplier_detail"] ?? {};
+    dynamic supplier_detail = jsondata["supplier_detail"] ?? null;
 
-    return InvenTreeCompany.fromJson(supplier_detail);
+    if (supplier_detail == null) {
+      return null;
+    } else {
+      return InvenTreeCompany.fromJson(supplier_detail);
+    }
   }
 
   String get supplierReference => jsondata['supplier_reference'] ?? "";

lib/widget/company_detail.dart

@@ -1,6 +1,5 @@
 
 import 'package:inventree/api.dart';
-import 'package:inventree/api_form.dart';
 import 'package:inventree/app_colors.dart';
 import 'package:inventree/inventree/company.dart';
 import 'package:inventree/widget/refreshable_state.dart';

lib/widget/purchase_order_detail.dart

@@ -0,0 +1,138 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:font_awesome_flutter/font_awesome_flutter.dart';
+import 'package:inventree/api.dart';
+import 'package:inventree/inventree/company.dart';
+import 'package:inventree/inventree/purchase_order.dart';
+import 'package:inventree/widget/refreshable_state.dart';
+
+import '../l10.dart';
+import 'location_display.dart';
+
+
+class PurchaseOrderDetailWidget extends StatefulWidget {
+
+  PurchaseOrderDetailWidget(this.order, {Key? key}): super(key: key);
+
+  final InvenTreePurchaseOrder order;
+
+  @override
+  _PurchaseOrderDetailState createState() => _PurchaseOrderDetailState(order);
+}
+
+
+class _PurchaseOrderDetailState extends RefreshableState<PurchaseOrderDetailWidget> {
+
+  _PurchaseOrderDetailState(this.order);
+
+  final InvenTreePurchaseOrder order;
+
+  @override
+  String getAppBarTitle(BuildContext context) => L10().purchaseOrder;
+
+  @override
+  List<Widget> getAppBarActions(BuildContext context) {
+    List<Widget> actions = [];
+
+    if (InvenTreeAPI().checkPermission("purchase_order", "change")) {
+      actions.add(
+        IconButton(
+          icon: FaIcon(FontAwesomeIcons.edit),
+          tooltip: L10().edit,
+          onPressed: () {
+            editOrder(context);
+          }
+        )
+      );
+    }
+
+    return actions;
+  }
+
+  @override
+  Future<void> request() async {
+    await order.reload();
+  }
+
+  void editOrder(BuildContext context) async {
+
+    order.editForm(
+      context,
+      L10().purchaseOrderEdit,
+      onSuccess: (data) async {
+        refresh();
+      }
+    );
+  }
+
+  List<Widget> orderTiles(BuildContext context) {
+
+    List<Widget> tiles = [];
+
+    InvenTreeCompany? supplier = order.supplier;
+
+    print(order.jsondata);
+
+    tiles.add(Card(
+      child: ListTile(
+        title: Text(order.reference),
+        subtitle: Text(order.description),
+        leading: supplier == null ? null : InvenTreeAPI().getImage(supplier.thumbnail, width: 40, height: 40),
+        trailing: Text("${order.lineItems}"),
+      )
+    ));
+
+    return tiles;
+
+  }
+
+  @override
+  Widget getBody(BuildContext context) {
+
+    return Center(
+      child: getSelectedWidget(context, tabIndex),
+    );
+  }
+
+  Widget getSelectedWidget(BuildContext context, int index) {
+    switch (index) {
+      case 0:
+        return ListView(
+          children: orderTiles(context)
+        );
+      case 2:
+        // Stock items received against this order
+        Map<String, String> filters = {
+          "purchase_order": "${order.pk}"
+        };
+
+        return PaginatedStockList(filters);
+
+      default:
+        return ListView();
+    }
+  }
+
+  @override
+  Widget getBottomNavBar(BuildContext context) {
+    return BottomNavigationBar(
+      currentIndex: tabIndex,
+      onTap: onTabSelectionChanged,
+      items: [
+        BottomNavigationBarItem(
+          icon: FaIcon(FontAwesomeIcons.info),
+          label: L10().details
+        ),
+        BottomNavigationBarItem(
+          icon: FaIcon(FontAwesomeIcons.thList),
+          label: L10().lineItems,
+        ),
+        BottomNavigationBarItem(
+          icon: FaIcon(FontAwesomeIcons.boxes),
+          label: L10().stockItems
+        )
+      ],
+    );
+  }
+
+}

lib/widget/purchase_order_list.dart

@@ -1,8 +1,10 @@
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
+import 'package:inventree/inventree/company.dart';
 import 'package:inventree/inventree/sentry.dart';
 import 'package:inventree/widget/paginator.dart';
+import 'package:inventree/widget/purchase_order_detail.dart';
 import 'package:inventree/widget/refreshable_state.dart';
 
 import '../l10.dart';
@@ -154,19 +156,24 @@ class _PaginatedPurchaseOrderListState extends State<_PaginatedPurchaseOrderList
 
   Widget _buildOrder(BuildContext context, InvenTreePurchaseOrder order) {
 
-    var supplier = order.supplier;
+    InvenTreeCompany? supplier = order.supplier;
 
     return ListTile(
       title: Text(order.reference),
       subtitle: Text(order.description),
-      leading: InvenTreeAPI().getImage(
+      leading: supplier == null ? null : InvenTreeAPI().getImage(
         supplier.thumbnail,
         width: 40,
         height: 40,
       ),
       trailing: Text("${order.lineItems}"),
       onTap: () async {
-        // TODO - Display purchase order information
+        Navigator.push(
+          context,
+          MaterialPageRoute(
+            builder: (context) => PurchaseOrderDetailWidget(order)
+          )
+        );
       },
     );
   }