Conversions between JavaScript objects and Maps.

lib/html/src/dart2js_Conversions.dart

 // 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.
 
 // Conversions for IDBKey.
 //
 // Per http://www.w3.org/TR/IndexedDB/#key-construct
 //
 // "A value is said to be a valid key if it is one of the following types: Array
 // JavaScript objects [ECMA-262], DOMString [WEBIDL], Date [ECMA-262] or float
@@ skipping 66 matching lines @@
 // We can get rid of this conversion if _TypedImageData implements the fields
 // with native names.
 _convertDartToNative_ImageData(ImageData imageData) {
   if (imageData is _ImageDataImpl) return imageData;
   return JS('Object', '{data: #, height: #, width: #}',
             imageData.data, imageData.height, imageData.width);
 }
 
 
 /// Converts a JavaScript object with properties into a Dart Map.
+/// Not suitable for nested objects.
 Map _convertNativeToDart_Dictionary(object) {
   // TODO: Implement.
+  var dict = {};
+  for (final key in JS('List', 'Object.getOwnPropertyNames(#)', object)) {
+    dict[key] = JS('var', '#[#]', object, key);
+  }
+  return dict;
+}
+
+/// Converts a flat Dart map into a JavaScript object with properties.
+_convertDartToNative_Dictionary(Map dict) {
+  var object = JS('var', '{}');
+  dict.forEach((String key, value) {
+      JS('void', '#[#] = #', object, key, value);
+    });
   return object;
 }
 
-/// Converts a Dart map into a JavaScript object with properties.
-_convertDartToNative_Dictionary(Map dict) {
-  // TODO: Implement.
-  return dict;
-}
 
-
 /**
  * Ensures that the input is a JavaScript Array.
  *
  * Creates a new JavaScript array if necessary, otherwise returns the original.
  */
 List _convertDartToNative_StringArray(List<String> input) {
   return input;
 }