Rename UINode to Widget.

sky/sdk/lib/widgets/scaffold.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 '../rendering/box.dart';
 import '../rendering/object.dart';
 import '../theme2/view_configuration.dart';
-import 'ui_node.dart';
+import 'widget.dart';
 
 enum ScaffoldSlots {
   toolbar,
   body,
   statusBar,
   drawer,
   floatingActionButton
 }
 
 class RenderScaffold extends RenderBox {
@@ skipping 134 matching lines @@
 }
 
 class Scaffold extends RenderObjectWrapper {
 
   // static final Style _style = new Style('''
   //   ${typography.typeface};
   //   ${typography.black.body1};''');
 
   Scaffold({
     String key,
-    UINode toolbar,
-    UINode body,
-    UINode statusBar,
-    UINode drawer,
-    UINode floatingActionButton
+    Widget toolbar,
+    Widget body,
+    Widget statusBar,
+    Widget drawer,
+    Widget floatingActionButton
   }) : _toolbar = toolbar,
        _body = body,
        _statusBar = statusBar,
        _drawer = drawer,
        _floatingActionButton = floatingActionButton,
        super(key: key);
 
-  UINode _toolbar;
-  UINode _body;
-  UINode _statusBar;
-  UINode _drawer;
-  UINode _floatingActionButton;
+  Widget _toolbar;
+  Widget _body;
+  Widget _statusBar;
+  Widget _drawer;
+  Widget _floatingActionButton;
 
   RenderScaffold get root => super.root;
   RenderScaffold createNode() => new RenderScaffold();
 
   void insert(RenderObjectWrapper child, ScaffoldSlots slot) {
     root[slot] = child != null ? child.root : null;
   }
 
-  void removeChild(UINode node) {
+  void removeChild(Widget node) {
     assert(node != null);
     root.remove(node.root);
     super.removeChild(node);
   }
 
   void remove() {
     if (_toolbar != null)
       removeChild(_toolbar);
     if (_body != null)
       removeChild(_body);
     if (_statusBar != null)
       removeChild(_statusBar);
     if (_drawer != null)
       removeChild(_drawer);
     if (_floatingActionButton != null)
       removeChild(_floatingActionButton);
     super.remove();
   }
 
-  void syncRenderObject(UINode old) {
+  void syncRenderObject(Widget old) {
     super.syncRenderObject(old);
     _toolbar = syncChild(_toolbar, old is Scaffold ? old._toolbar : null, ScaffoldSlots.toolbar);
     _body = syncChild(_body, old is Scaffold ? old._body : null, ScaffoldSlots.body);
     _statusBar = syncChild(_statusBar, old is Scaffold ? old._statusBar : null, ScaffoldSlots.statusBar);
     _drawer = syncChild(_drawer, old is Scaffold ? old._drawer : null, ScaffoldSlots.drawer);
     _floatingActionButton = syncChild(_floatingActionButton, old is Scaffold ? old._floatingActionButton : null, ScaffoldSlots.floatingActionButton);
   }
 
 }