[Effen] Make the stock app use the radio button widget so that it's being tested.

sky/examples/stocks/lib/stock_app.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import 'package:sky/framework/components/action_bar.dart';
 import 'package:sky/framework/components/drawer.dart';
 import 'package:sky/framework/components/drawer_header.dart';
 import 'package:sky/framework/components/floating_action_button.dart';
 import 'package:sky/framework/components/icon.dart';
 import 'package:sky/framework/components/icon_button.dart';
 import 'package:sky/framework/components/input.dart';
 import 'package:sky/framework/components/menu_divider.dart';
 import 'package:sky/framework/components/menu_item.dart';
 import 'package:sky/framework/components/modal_overlay.dart';
 import 'package:sky/framework/components/popup_menu.dart';
+import 'package:sky/framework/components/radio.dart';
 import 'package:sky/framework/components/scaffold.dart';
 import 'package:sky/framework/fn.dart';
 import 'package:sky/framework/theme/typography.dart' as typography;
 import 'package:sky/framework/theme/colors.dart';
 import 'stock_data.dart';
 import 'stock_list.dart';
 import 'stock_menu.dart';
 
 import 'dart:async';
 import 'package:sky/framework/layout.dart';
 
 const bool debug = false; // set to true to dump the DOM for debugging purposes
 
+enum StockMode { Optimistic, Pessimistic }
+
 class StocksApp extends App {
 
   static final Style _actionBarStyle = new Style('''
     background-color: ${Purple[500]};''');
 
   static final Style _searchBarStyle = new Style('''
     background-color: ${Grey[50]};''');
 
   static final Style _titleStyle = new Style('''
     ${typography.white.title};''');
@@ skipping 54 matching lines @@
   void _handleMenuHide(_) {
     setState(() {
       _menuController.close().then((_) {
         setState(() {
           _menuController = null;
         });
       });
     });
   }
 
+  bool _autorefresh = false;
+  void _handleAutorefreshChanged(bool value) {
+    setState(() {
+      _autorefresh = value;
+    });
+  }
+
+  StockMode _stockMode = StockMode.Optimistic;
+  void _handleStockModeChange(StockMode value) {
+    setState(() {
+      _stockMode = value;
+    });
+  }
+
+  static FlexBoxParentData _flex1 = new FlexBoxParentData()..flex = 1;
+
   Drawer buildDrawer() {
     return new Drawer(
       controller: _drawerController,
       level: 3,
       children: [
         new DrawerHeader(children: [new Text('Stocks')]),
         new MenuItem(
-          key: 'Inbox',
-          icon: 'content/inbox',
-          children: [new Text('Inbox')]),
-        new MenuDivider(),
+          key: 'Stock list',
+          icon: 'action/assessment',
+          children: [new Text('Stock List')]),
         new MenuItem(
-          key: 'Drafts',
-          icon: 'content/drafts',
-          children: [new Text('Drafts')]),
+          key: 'Account Balance',
+          icon: 'action/account_balance',
+          children: [new Text('Account Balance')]),
+        new MenuDivider(key: 'div1'),
+        new MenuItem(
+          key: 'Optimistic Menu Item',
+          icon: 'action/thumb_up',
+          onGestureTap: (event) => _handleStockModeChange(StockMode.Optimistic),
+          children: [
+            new ParentDataNode(new Text('Optimistic'), _flex1),
+            new Radio(key: 'optimistic-radio', value: StockMode.Optimistic, groupValue: _stockMode, onChanged: _handleStockModeChange)
+          ]),
+        new MenuItem(
+          key: 'Pessimistic Menu Item',
+          icon: 'action/thumb_down',
+          onGestureTap: (event) => _handleStockModeChange(StockMode.Pessimistic),
+          children: [
+            new ParentDataNode(new Text('Pessimistic'), _flex1),
+            new Radio(key: 'pessimistic-radio', value: StockMode.Pessimistic, groupValue: _stockMode, onChanged: _handleStockModeChange)
+          ]),
+        new MenuDivider(key: 'div2'),
         new MenuItem(
           key: 'Settings',
           icon: 'action/settings',
           children: [new Text('Settings')]),
         new MenuItem(
           key: 'Help & Feedback',
           icon: 'action/help',
           children: [new Text('Help & Feedback')])
       ]
     );
@@ skipping 30 matching lines @@
           focused: true,
           placeholder: 'Search stocks',
           onChanged: _handleSearchQueryChanged)),
       _searchBarStyle);
   }
 
   void addMenuToOverlays(List<UINode> overlays) {
     if (_menuController == null)
       return;
     overlays.add(new ModalOverlay(
-      children: [new StockMenu(controller: _menuController)],
+      children: [new StockMenu(
+        controller: _menuController,
+        autorefresh: _autorefresh,
+        onAutorefreshChanged: _handleAutorefreshChanged
+      )],
       onDismiss: _handleMenuHide));
   }
 
   UINode build() {
     List<UINode> overlays = [];
     addMenuToOverlays(overlays);
 
     return new Scaffold(
       header: _isSearching ? buildSearchBar() : buildActionBar(),
       content: new Stocklist(stocks: _stocks, query: _searchQuery),
       fab: new FloatingActionButton(
         content: new Icon(type: 'content/add_white', size: 24), level: 3),
       drawer: _drawerShowing ? buildDrawer() : null,
       overlays: overlays
     );
   }
 }