Report errors and warnings for hiding elements, issue 572.

client/samples/swarm/DataSource.dart

 // Copyright (c) 2011, 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.
 
 /** The top-level collection of all sections for a user. */
 // TODO(jimhug): This is known as UserData in the server model.
 class Sections implements Collection<Section> {
   final List<Section> _sections;
 
   Sections(this._sections);
@@ skipping 108 matching lines @@
     final sectionTitle = decoder.readString();
 
     final nSources = decoder.readInt();
     final feeds = new ObservableList<Feed>();
     for (int j=0; j < nSources; j++) {
       feeds.add(Feed.decode(decoder));
     }
     return new Section(sectionId, sectionTitle, feeds);
   }
 
-  Feed findFeed(String id) {
-    return CollectionUtils.find(feeds, (feed) => feed.id == id);
+  Feed findFeed(String id_) {
+    return CollectionUtils.find(feeds, (feed) => feed.id == id_);
   }
 }
 
 /** Provider of a news feed. */
 class Feed {
   String id;
   final String title;
   final String iconUrl;
   final String description;
   ObservableList<Article> articles;
   ObservableValue<bool> error; // TODO(jimhug): Check if dead code.
 
   Feed(this.id, this.title, this.iconUrl, [this.description = ''])
     : articles = new ObservableList<Article>(),
       error = new ObservableValue<bool>(false);
 
   static Feed decode(Decoder decoder) {
     final sourceId = decoder.readString();
     final sourceTitle = decoder.readString();
     final sourceIcon = decoder.readString();
     final feed = new Feed(sourceId, sourceTitle, sourceIcon);
     final nItems = decoder.readInt();
 
     for (int i=0; i < nItems; i++) {
       feed.articles.add(Article.decodeHeader(feed, decoder));
     }
     return feed;
   }
 
-  Article findArticle(String id) {
-    return CollectionUtils.find(articles, (article) => article.id == id);
+  Article findArticle(String id_) {
+    return CollectionUtils.find(articles, (article) => article.id == id_);
   }
 
   void refresh() {}
 }
 
 
 /** A single article or posting to display. */
 class Article {
   final String id;
   Date date;
@@ skipping 62 matching lines @@
     final srcUrl = decoder.readString();
     final hasThumbnail = decoder.readBool();
     final author = decoder.readString();
     final dateInSeconds = decoder.readInt();
     final snippet = decoder.readString();
     final date = new Date.fromEpoch(dateInSeconds*1000, new TimeZone.utc());
     return new Article(source, id, date, title, author, srcUrl, hasThumbnail,
         snippet);
   }
 }