chrome/browser/media/router/media_routes_observer.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTES_OBSERVER_H_
   6 #define CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTES_OBSERVER_H_
   7
   8 #include <vector>
   9
  10 #include "base/macros.h"
  11 #include "chrome/browser/media/router/media_route.h"
  12
  13 namespace media_router {
  14
  15 class MediaRouter;
  16
  17 // Base class for observing when the set of MediaRoutes and their associated
  18 // MediaSinks have been updated.
  19 class MediaRoutesObserver {
  20  public:
  21   explicit MediaRoutesObserver(MediaRouter* router);
  22   virtual ~MediaRoutesObserver();
  23
  24   // Invoked when the list of routes and their associated sinks have been
  25   // updated.
  26   // Implementations may not perform operations that modify the Media Router's
  27   // observer list. In particular, invoking this observer's destructor within
  28   // OnRoutesUpdated will result in undefined behavior.
  29   virtual void OnRoutesUpdated(const std::vector<MediaRoute>& routes) {}
  30
  31  private:
  32   MediaRouter* router_;
  33
  34   DISALLOW_COPY_AND_ASSIGN(MediaRoutesObserver);
  35 };
  36
  37 }  // namespace media_router
  38
  39 #endif  // CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTES_OBSERVER_H_