Cleanup sky/sdk/examples

sky/sdk/example/stocks/lib/stock_list.dart

Index: sky/sdk/example/stocks/lib/stock_list.dart
diff --git a/sky/sdk/example/stocks/lib/stock_list.dart b/sky/sdk/example/stocks/lib/stock_list.dart
index c0fbe44ee07857c50a187cb050cd1365a07fc175..4b36783d186d25f5a0cd5920b5794a8a234cc844 100644
--- a/sky/sdk/example/stocks/lib/stock_list.dart
+++ b/sky/sdk/example/stocks/lib/stock_list.dart
@@ -2,22 +2,30 @@
 // 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/fixed_height_scrollable.dart';
-import 'package:sky/framework/fn.dart';
+import 'package:sky/widgets/fixed_height_scrollable.dart';
+import 'package:sky/widgets/basic.dart';
+
 import 'stock_data.dart';
 import 'stock_row.dart';
 
 class Stocklist extends FixedHeightScrollable {
-  String query;
-  List<Stock> stocks;
 
   Stocklist({
-    Object key,
+    String key,
     this.stocks,
     this.query
-  }) : super(key: key);
+  }) : super(itemHeight: StockRow.kHeight, key: key);
+
+  String query;
+  List<Stock> stocks;
+
+  void syncFields(Stocklist source) {
+    query = source.query;
+    stocks = source.stocks;
+    super.syncFields(source);
+  }
 
-  List<UINode> buildItems(int start, int count) {
+  List<Widget> buildItems(int start, int count) {
     var filteredStocks = stocks.where((stock) {
       return query == null ||
              stock.symbol.contains(new RegExp(query, caseSensitive: false));