Implement Model-Driven-Views spec for Dart

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

Index: tools/dom/templates/html/impl/impl_Text.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Text.darttemplate b/tools/dom/templates/html/impl/impl_Text.darttemplate
index e5bbf5d49735a760c193df03fd3a129c2a1d3675..05d0be72ac27689c5956b3ead1c7d27a1fdab753 100644
--- a/tools/dom/templates/html/impl/impl_Text.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Text.darttemplate
@@ -9,4 +9,42 @@ part of $LIBRARYNAME;
 $(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
   factory $CLASSNAME(String data) => _$(CLASSNAME)FactoryProvider.create$CLASSNAME(data);
 $!MEMBERS
+
+$if DART2JS
+  @Creates('Null')  // Set from Dart code; does not instantiate a native type.
+$endif
+  StreamSubscription _textBinding;
+
+  @Experimental
+  void bind(String name, model, String path) {
+    if (name != 'text') {
+      super.bind(name, model, path);
+      return;
+    }
+
+    unbind('text');
+
+    _textBinding = new PathObserver(model, path).bindSync((value) {
+      text = value == null ? '' : '$value';
+    });
+  }
+
+  @Experimental
+  void unbind(String name) {
+    if (name != 'text') {
+      super.unbind(name);
+      return;
+    }
+
+    if (_textBinding == null) return;
+
+    _textBinding.cancel();
+    _textBinding = null;
+  }
+
+  @Experimental
+  void unbindAll() {
+    unbind('text');
+    super.unbindAll();
+  }
 }