Read locales over http in the browser

pkg/intl/lib/src/http_request_data_reader.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.
+
+/**
+ * This contains a reader that accesses data using the HttpRequest
+ * facility, and thus works only in the web browser.
+ */
+
+#library('http_request_data_reader');
+
+#import('dart:html');
+#import('intl_helpers.dart');
+
+class HTTPRequestDataReader implements LocaleDataReader {
+
+  /** The base url from which we read the data. */
+  String url;
+  HTTPRequestDataReader(this.url);
+
+  Future read(String locale) {
+    var completer = new Completer();
+    var source = '$url$locale.json';
+    var request = new HttpRequest.get(
+        source,
+        (request) => completer.complete(request.responseText));
+    return completer.future;
+ }
+}