chromium/ui/gfx/animation/animation_container.h

// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_GFX_ANIMATION_ANIMATION_CONTAINER_H_
#define UI_GFX_ANIMATION_ANIMATION_CONTAINER_H_

#include <memory>
#include <utility>

#include "base/containers/flat_set.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
#include "ui/gfx/animation/animation_export.h"
#include "ui/gfx/animation/animation_runner.h"

namespace gfx {

class AnimationContainerElement;
class AnimationContainerObserver;

// AnimationContainer is used by Animation to manage the underlying
// AnimationRunner. Internally each Animation creates a single
// AnimationContainer. You can group a set of Animations into the same
// AnimationContainer by way of Animation::SetContainer. Grouping a set of
// Animations into the same AnimationContainer ensures they all update and start
// at the same time.
//
// AnimationContainer is ref counted. Each Animation contained within the
// AnimationContainer own it.
class ANIMATION_EXPORT AnimationContainer
    : public base::RefCounted<AnimationContainer> { … };

}  // namespace gfx

#endif  // UI_GFX_ANIMATION_ANIMATION_CONTAINER_H_