athena/test/base/activity_lifetime_tracker.h

   1 // Copyright 2014 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 ATHENA_TEST_BASE_ACTIVITY_LIFETIME_TRACKER_H_
   6 #define ATHENA_TEST_BASE_ACTIVITY_LIFETIME_TRACKER_H_
   7
   8 #include "athena/activity/public/activity_manager_observer.h"
   9 #include "base/macros.h"
  10
  11 namespace athena {
  12 class Activity;
  13
  14 // Listens for activities to be started / ended and will return them.
  15 class ActivityLifetimeTracker : public ActivityManagerObserver {
  16  public:
  17   ActivityLifetimeTracker();
  18   ~ActivityLifetimeTracker() override;
  19
  20   // ActivityManagerObserver:
  21   void OnActivityStarted(Activity* activity) override;
  22   void OnActivityEnding(Activity* activity) override;
  23   void OnActivityOrderChanged() override;
  24
  25   // Returns the newly created activity (if any) and resets its reference.
  26   Activity* GetNewActivityAndReset();
  27
  28   // Returns a deleted activity (if any) and resets its reference.
  29   // Note that the pointer is void* since the Activity was deleted when
  30   // requested.
  31   void* GetDeletedActivityAndReset();
  32
  33  private:
  34   // The activity which got created if not nullptr.
  35   Activity* new_activity_;
  36
  37   // An old activity which got unloaded if not nullptr.
  38   void* deleted_activity_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(ActivityLifetimeTracker);
  41 };
  42
  43 }  // namespace athena
  44
  45 #endif //  ATHENA_TEST_BASE_ACTIVITY_LIFETIME_TRACKER_H_
  46