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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_ANIMATION_ANIMATION_TIMELINE_H_
#define CC_ANIMATION_ANIMATION_TIMELINE_H_
#include <unordered_map>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "cc/base/cc_export.h"
namespace cc {
class AnimationHost;
class AnimationPlayer;
// An AnimationTimeline owns a group of AnimationPlayers.
// This is a cc counterpart for blink::AnimationTimeline (in 1:1 relationship).
// Each AnimationTimeline and its AnimationPlayers have their copies on
// the impl thread. We synchronize main thread and impl thread instances
// using integer IDs.
class CC_EXPORT AnimationTimeline : public base::RefCounted<AnimationTimeline> {
public:
static scoped_refptr<AnimationTimeline> Create(int id);
scoped_refptr<AnimationTimeline> CreateImplInstance() const;
int id() const { return id_; }
// Parent AnimationHost.
AnimationHost* animation_host() { return animation_host_; }
const AnimationHost* animation_host() const { return animation_host_; }
void SetAnimationHost(AnimationHost* animation_host);
void set_is_impl_only(bool is_impl_only) { is_impl_only_ = is_impl_only; }
bool is_impl_only() const { return is_impl_only_; }
void AttachPlayer(scoped_refptr<AnimationPlayer> player);
void DetachPlayer(scoped_refptr<AnimationPlayer> player);
void ClearPlayers();
void PushPropertiesTo(AnimationTimeline* timeline_impl);
AnimationPlayer* GetPlayerById(int player_id) const;
private:
friend class base::RefCounted<AnimationTimeline>;
explicit AnimationTimeline(int id);
virtual ~AnimationTimeline();
void PushAttachedPlayersToImplThread(AnimationTimeline* timeline) const;
void RemoveDetachedPlayersFromImplThread(AnimationTimeline* timeline) const;
void PushPropertiesToImplThread(AnimationTimeline* timeline);
void ErasePlayer(scoped_refptr<AnimationPlayer> player);
// A list of all players which this timeline owns.
using IdToPlayerMap = std::unordered_map<int, scoped_refptr<AnimationPlayer>>;
IdToPlayerMap id_to_player_map_;
int id_;
AnimationHost* animation_host_;
// Impl-only AnimationTimeline has no main thread instance and lives on
// it's own.
bool is_impl_only_;
DISALLOW_COPY_AND_ASSIGN(AnimationTimeline);
};
} // namespace cc
#endif // CC_ANIMATION_ANIMATION_TIMELINE_H_
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