[mdv] implement Node.createBinding and Node.createBindings

tools/dom/templates/html/impl/impl_Node.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;
 
 /**
  * Lazy implementation of the child nodes of an element that does not request
  * the actual child nodes of an element until strictly necessary greatly
  * improving performance for the typical cases where it is not required.
@@ skipping 181 matching lines @@
    * single node.
    */
   final Node lastNode;
 
   /** The model used to instantiate the template. */
   final model;
 
   TemplateInstance(this.firstNode, this.lastNode, this.model);
 }
 
+
 $(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
   List<Node> get nodes {
     return new _ChildNodeListLazy(this);
   }
 
   void set nodes(Iterable<Node> value) {
     // Copy list first since we don't want liveness during iteration.
     // TODO(jacobr): there is a better way to do this.
     List copy = new List.from(value);
     text = '';
@@ skipping 52 matching lines @@
         this.insertBefore(node, refChild);
       }
     }
   }
 
   /**
    * Print out a String representation of this Node.
    */
   String toString() => nodeValue == null ? super.toString() : nodeValue;
 
+
+  /**
+   * Creates a binding to the attribute [name] to the [path] of the [model].
+   *
+   * This can be overridden by custom elements to provide the binding used in
+   * [Node.bind]. This will only create the binding; it will not add it to
+   * [bindings].
+   *
+   * You should not need to call this directly except from [Node.bind].
+   */
+  @Experimental()
+  createBinding(String name, model, String path) =>
+      TemplateElement.mdvPackage(this).createBinding(name, model, path);
+
   /**
    * Binds the attribute [name] to the [path] of the [model].
    * Path is a String of accessors such as `foo.bar.baz`.
+   * Returns the `NodeBinding` instance.
    */
   @Experimental()
-  void bind(String name, model, String path) {
-    TemplateElement.mdvPackage(this).bind(name, model, path);
-  }
+  bind(String name, model, String path) =>
+      TemplateElement.mdvPackage(this).bind(name, model, path);
 
   /** Unbinds the attribute [name]. */
   @Experimental()
   void unbind(String name) {
     TemplateElement.mdvPackage(this).unbind(name);
   }
 
   /** Unbinds all bound attributes. */
   @Experimental()
   void unbindAll() {
     TemplateElement.mdvPackage(this).unbindAll();
   }
 
+  /** Gets the data bindings that are associated with this node. */
+  @Experimental()
+  Map<String, dynamic> get bindings =>
+      TemplateElement.mdvPackage(this).bindings;
+
   /** Gets the template instance that instantiated this node, if any. */
   @Experimental()
   TemplateInstance get templateInstance =>
       TemplateElement.mdvPackage(this).templateInstance;
 
 $!MEMBERS
 }