ui/gfx/animation/animation_container_observer.h

   1 // Copyright (c) 2011 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 UI_GFX_ANIMATION_ANIMATION_CONTAINER_OBSERVER_H_
   6 #define UI_GFX_ANIMATION_ANIMATION_CONTAINER_OBSERVER_H_
   7
   8 #include "ui/gfx/gfx_export.h"
   9
  10 namespace gfx {
  11
  12 class AnimationContainer;
  13
  14 // The observer is notified after every update of the animations managed by
  15 // the container.
  16 class GFX_EXPORT AnimationContainerObserver {
  17  public:
  18   // Invoked on every tick of the timer managed by the container and after
  19   // all the animations have updated.
  20   virtual void AnimationContainerProgressed(
  21       AnimationContainer* container) = 0;
  22
  23   // Invoked when no more animations are being managed by this container.
  24   virtual void AnimationContainerEmpty(AnimationContainer* container) = 0;
  25
  26  protected:
  27   virtual ~AnimationContainerObserver() {}
  28 };
  29
  30 }  // namespace gfx
  31
  32 #endif  // UI_GFX_ANIMATION_ANIMATION_CONTAINER_OBSERVER_H_