[Effen] add StyleNode

sky/examples/stocks-fn/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/input.dart';
@@ skipping 22 matching lines @@
   static Style _iconStyle = new Style('''
     padding: 8px;'''
   );
 
   static Style _titleStyle = new Style('''
     padding-left: 24px;
     flex: 1;
     ${typography.white.title};'''
   );
 
+  static Style _stocklistHeight = new Style('''
+    flex: 1;'''
+  );
+
   List<Stock> _sortedStocks;
   bool _isSearching = false;
   bool _isShowingMenu = false;
   String _searchQuery;
 
   StocksApp() : super() {
     _sortedStocks = oracle.stocks;
     _sortedStocks.sort((a, b) => a.symbol.compareTo(b.symbol));
   }
 
@@ skipping 77 matching lines @@
         ),
         new EventTarget(
           new Icon(key: 'more_white', style: _iconStyle,
               size: 24,
               type: 'navigation/more_vert_white'),
           onGestureTap: _handleMenuClick
         )
       ]
     );
 
-    var list = new Stocklist(stocks: _sortedStocks, query: _searchQuery);
+    var list = new StyleNode(
+      new Stocklist(stocks: _sortedStocks, query: _searchQuery),
+      _stocklistHeight);
 
     var fab = new FloatingActionButton(content: new Icon(
       type: 'content/add_white', size: 24), level: 3);
 
     var children = [
       new Container(
         key: 'Content',
         style: _style,
         children: [toolbar, list]
       ),
@@ skipping 12 matching lines @@
             _menuController = null;
           });
         }
       );
       children.add(menu);
     }
 
     return new Container(key: 'StocksApp', children: children);
   }
 }