Renaming Element.dataAttributes to Element.dataset.

tools/dom/templates/html/impl/impl_Element.darttemplate

 // Copyright (c) 2012, 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 $LIBRARYNAME;
 
 // TODO(jacobr): use _Lists.dart to remove some of the duplicated
 // functionality.
 class _ChildrenElementList implements List {
   // Raw Element.
@@ skipping 651 matching lines @@
    * * The name cannot contain any capital letters.
    *
    * Any keys from markup will be converted to camel-cased keys in the map.
    *
    * For example, HTML specified as:
    *
    *     <div data-my-random-value='value'></div>
    *
    * Would be accessed in Dart as:
    *
-   *     var value = element.dataAttributes['myRandomValue'];
+   *     var value = element.dataset['myRandomValue'];
    *
    * See also:
    *
    * * [Custom data attributes](http://www.w3.org/TR/html5/global-attributes.html#custom-data-attribute)
    */

[Jacob, 2013/02/14 18:16:36]

we should think about whether the regular browser dataset implementation should
be used on modern browsers rather than the existing polyfill.

-  Map<String, String> get dataAttributes =>
+  Map<String, String> get dataset =>
     new _DataAttributeMap(attributes);
 
-  void set dataAttributes(Map<String, String> value) {
-    final dataAttributes = this.dataAttributes;
-    dataAttributes.clear();
+  void set dataset(Map<String, String> value) {
+    final data = this.dataset;
+    data.clear();
     for (String key in value.keys) {
-      dataAttributes[key] = value[key];
+      data[key] = value[key];
     }
   }
 
   /**
    * Gets a map for manipulating the attributes of a particular namespace.
    *
    * This is primarily useful for SVG attributes such as xref:link.
    */
   Map<String, String> getNamespacedAttributes(String namespace) {
     return new _NamespacedAttributeMap(this, namespace);
@@ skipping 416 matching lines @@
   const ScrollAlignment._internal(this._value);
   toString() => 'ScrollAlignment.$_value';
 
   /// Attempt to align the element to the top of the scrollable area.
   static const TOP = const ScrollAlignment._internal('TOP');
   /// Attempt to center the element in the scrollable area.
   static const CENTER = const ScrollAlignment._internal('CENTER');
   /// Attempt to align the element to the bottom of the scrollable area.
   static const BOTTOM = const ScrollAlignment._internal('BOTTOM');
 }