Changes in polymer-expressions to prepare for codegen in polymer:

pkg/polymer/lib/src/instance.dart

 // Copyright (c) 2013, 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 polymer;
 
 /// Use this annotation to publish a field as an attribute. For example:
 ///
 ///     class MyPlaybackElement extends PolymerElement {
 ///       // This will be available as an HTML attribute, for example:
@@ skipping 63 matching lines @@
     _typesByName[name] = type;
 
     // Dart note: here we notify JS of the element registration. We don't pass
     // the Dart type because we will handle that in PolymerDeclaration.
     // See _hookJsPolymerDeclaration for how this is done.
     (js.context['Polymer'] as JsFunction).apply([name]);
   }
 
   /// The one syntax to rule them all.
   static final BindingDelegate _polymerSyntax =
-      new _PolymerExpressionsWithEventDelegate();
+      new PolymerExpressionsWithEventDelegate();
 
   static int _preparingElements = 0;
 
   static final Completer _ready = new Completer();
 
   /// Future indicating that the Polymer library has been loaded and is ready
   /// for use.
   static Future get onReady => _ready.future;
 
   PolymerDeclaration _declaration;
@@ skipping 866 matching lines @@
   PolymerElement.created() : super.created() {
     polymerCreated();
   }
 }
 
 class _PropertyValue {
   Object oldValue, newValue;
   _PropertyValue(this.oldValue);
 }
 
-class _PolymerExpressionsWithEventDelegate extends PolymerExpressions {
+class PolymerExpressionsWithEventDelegate extends PolymerExpressions {
+  PolymerExpressionsWithEventDelegate({Map<String, Object> globals})

[Jennifer Messerly, 2014/03/22 00:37:56]

nice!

suggestion: rename PolymerExpressionsWithEvents ?

seems a bit friendlier.

[Siggi Cherem (dart-lang), 2014/03/22 00:57:42]

good idea. Done

+      : super(globals: globals);
+
   prepareBinding(String path, name, node) {
     if (_hasEventPrefix(name)) return Polymer.prepareBinding(path, name, node);
     return super.prepareBinding(path, name, node);
   }
 }
 
 class _EventBindable extends Bindable {
   final Node _node;
   final String _eventName;
   final _model;
@@ skipping 35 matching lines @@
     if (_sub != null) {
       if (_eventsLog.isLoggable(Level.FINE)) {
         _eventsLog.fine(
             'event.remove: [$_node].$_eventName => [$_model].$_path())');
       }
      _sub.cancel();
       _sub = null;
     }
   }
 }