Big merge from experimental to bleeding edge.

samples/swarm/Views.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of swarmlib;
 
 // This file contains View framework classes.
 // As it grows, it may need to be split into multiple files.
 
 /** A factory that creates a view from a data model. */
@@ skipping 153 matching lines @@
 
   void onSelectedItemChange() {
     // TODO(rnystrom): use Observable to track the last value of _selectedItem
     // rather than tracking it ourselves.
     _select(findIndex(_lastSelectedItem), false);
     _select(findIndex(_selectedItem.value), true);
     _lastSelectedItem = _selectedItem.value;
   }
 
   Collection<View> get childViews {
-    return _itemViews.values;
+    return _itemViews.values.toList();
   }
 
   void _onClick(MouseEvent e) {
     int index = _findAssociatedIndex(e.target);
     if (index != null) {
       _selectedItem.value = _data[index];
     }
   }
 
   int _findAssociatedIndex(Node leafNode) {
@@ skipping 499 matching lines @@
   int getSnapIndex(num offset, int viewLength) {
     int index = (-offset / _itemLength).round().toInt();
     if (_paginate) {
       index = getPageStartIndex(getPage(index, viewLength), viewLength);
     }
     return GoogleMath.clamp(index, 0, _data.length - 1);
   }
 
   Interval computeVisibleInterval(
       num offset, num viewLength, num bufferLength) {
-    num targetIntervalStart =
-        Math.max(0,((-offset - bufferLength) / _itemLength).floor());
+    int targetIntervalStart =
+        Math.max(0, (-offset - bufferLength) ~/ _itemLength);
     num targetIntervalEnd = GoogleMath.clamp(
         ((-offset + viewLength + bufferLength) / _itemLength).ceil(),
         targetIntervalStart,
         _data.length);
-    return new Interval(targetIntervalStart.toInt(),
-                        targetIntervalEnd.toInt());
+    return new Interval(targetIntervalStart, targetIntervalEnd.toInt());
   }
 }
 
 /**
  * Simple list view class where each item has fixed width and height.
  */
 class ListView<D> extends GenericListView<D> {
 
   /**
    * Creates a new ListView for the given data. If [:_data:] is an
@@ skipping 264 matching lines @@
 
     container = node.query('.dialog-body');
     container.nodes.add(_content.node);
 
     return node;
   }
 
   /** Override to handle dialog done. */
   void onDone() { }
 }