Final CL to kill off client/samples .

client/samples/swarm/App.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 base class that should be extended by all HTML applications.
- *
- * It should both be easy to use for users coming over from JavaScript, but
- * also offer a clear notion of OO encapsulation.
- *
- * This class or something similar belongs in the standard DOM library.
- */
-class App {
-
-  App() {}
-
-  /** Begins executing code in this [App]. */
-  void run() {
-    // If the script is async, by the time we get here the DOM content may
-    // already be loaded, so waiting on the DOMContentLoaded event is a no-op.
-    // Guard against this by checking whether the document readiness state has
-    // gotten as far as "interactive".  (We believe the transition to
-    // "interactive" is when the DOMContentLoaded event fires, but haven't
-    // found that specified; if that's not true it leaves a race bug.)
-    if (document.readyState == "interactive" ||
-        document.readyState == "complete" ||
-        document.readyState == "loaded") {
-      // We use setTimeout to insure that onLoad is always called in an async
-      // manner even if the document is already loaded.
-      window.setTimeout(() => onLoad(), 0);
-    } else {
-      window.on.contentLoaded.add(
-        // TODO(sigmund):  Consider eliminating the call to "wrap", for
-        // instance, modify event listeners to always wrap, or extend DOM code
-        // to intercept the beginning & end of each event loop
-        EventBatch.wrap((Event event) => onLoad()));
-    }
-  }
-
-  /**
-   * Called when the DOM is fully loaded but potentially before resources.
-   *
-   * For most apps, any startup code should be in this method. Be sure to call
-   * the superclass implementation.
-   */
-  void onLoad() {
-    // Prevent the default browser behavior of scrolling the window.
-    document.on.touchMove.add((Event event) => event.preventDefault());
-
-    // Swap and reload the cache if ready
-    if (!swapAndReloadCache()) {
-      // Otherwise wait until an update to the cache is ready
-      window.applicationCache.on.updateReady.add(
-          (e) => swapAndReloadCache());
-    }
-  }
-
-  /**
-   * Erase the static splash screen.
-   *
-   * Assumption: if a splash screen exists, an element #appSplash contains it.
-   */
-  void eraseSplashScreen() {
-    final splash = document.query("#appSplash");
-    // Delete it if found, but it's okay for it not to be -- maybe
-    // somebody just didn't want to use our splash mechanism.
-    if (splash !== null) {
-      splash.remove();
-    }
-  }
-
-  /**
-   * Swaps and reloads the app cache if an update is ready. Returns false if
-   * an update is not ready.
-   */
-  bool swapAndReloadCache() {
-    DOMApplicationCache appCache = window.applicationCache;
-    if (appCache.status !== DOMApplicationCache.UPDATEREADY) {
-      return false;
-    }
-
-    print('App cache update ready, now swapping...');
-    window.applicationCache.swapCache();
-    print('App cache swapped, now reloading page...');
-    window.location.reload();
-    return true;
-  }
-
-  /** Returns true if we are running as a packaged application. */
-  static bool get isPackaged() {
-    return window.location.protocol == 'chrome-extension:';
-  }
-
-  /**
-    * Gets the server URL. This is needed when we are loaded from a packaged
-    * Chrome app.
-    */
-  static String serverUrl(String url) {
-    if (isPackaged) {
-      // TODO(jmesserly): Several problems with this:
-      //   * How do we authenticate against the server?
-      //   * How do we talk to a server other than thump?
-      assert(url.startsWith('/'));
-      return 'http://thump.googleplex.com' + url;
-    } else {
-      return url;
-    }
-  }
-}