Final CL to kill off client/samples .

client/samples/swarm/SwarmApp.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.
-
-/**
- * A simple news reader in Dart.
- */
-class Swarm extends App {
-  /**
-   * Flag to insure the onLoad isn't called when callback from initializeFromUrl
-   * could occur before the document's onload event.
-   */
-  bool onLoadFired;
-
-  /** Collections of datafeeds to show per page. */
-  Sections sections;
-
-  /** The front page of the app. */
-  FrontView frontView;
-
-  /** Observable UI state. */
-  SwarmState state;
-
-  Swarm() : super(), onLoadFired = false {
-    Sections.initializeFromUrl((currSections) {
-      sections = currSections;
-      state = new SwarmState(sections);
-      setupApp();
-    });
-    // Catch user keypresses and decide whether to use them for the
-    // Streams app or pass them on to the browser.
-    document.on.keyUp.add((e) {
-      if (frontView != null) {
-        frontView.processKeyEvent(e);
-      }
-    });
-  }
-
-  /**
-   * Tells each data source to check the server for the latest data.
-   */
-  void refresh() {
-    sections.refresh();
-
-    // Hook up listeners about any data source additions or deletions.  We don't
-    // differeniate additions or deletions just the fact that data feeds have
-    // changed.  We might want more fidelity later.
-    sections.sectionTitles.forEach((title) {
-      Section section = sections.findSection(title);
-      // TODO(terry): addChangeListener needs to return an id so previous
-      //              listener can be removed, otherwise anonymous functions
-      //              can't easily be used.  See b/5063673
-      section.feeds.addChangeListener((data) {
-        // TODO(jacobr): implement this.
-        print("Refresh sections not impl yet.");
-      });
-    });
-  }
-
-  /** The page load event handler. */
-  void onLoad() {
-    onLoadFired = true;
-    super.onLoad();
-    setupApp();
-  }
-
-  /**
-   * Setup the application's world.
-   */
-  void setupApp() {
-    // TODO(terry): Should be able to spinup the app w/o waiting for data.
-    // If the document is already loaded so we can setup the app anytime.
-    // Otherwise, we'll wait to setup the world until the document is ready
-    // to render.
-    if (onLoadFired && state != null) {
-      render();
-      // This call loads the initial data.
-      refresh();
-      eraseSplashScreen();
-    }
-  }
-
-  void render() {
-    frontView = new FrontView(this);
-    frontView.addToDocument(document.body);
-  }
-}