1// Copyright 2012 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 CC_ANIMATION_ANIMATION_REGISTRAR_H_
6#define CC_ANIMATION_ANIMATION_REGISTRAR_H_
7
8#include "base/containers/hash_tables.h"
9#include "base/memory/ref_counted.h"
10#include "base/memory/scoped_ptr.h"
11#include "cc/base/cc_export.h"
12
13namespace cc {
14
15class LayerAnimationController;
16
17class CC_EXPORT AnimationRegistrar {
18 public:
19  typedef base::hash_map<int, LayerAnimationController*> AnimationControllerMap;
20
21  static scoped_ptr<AnimationRegistrar> Create() {
22    return make_scoped_ptr(new AnimationRegistrar());
23  }
24
25  virtual ~AnimationRegistrar();
26
27  // If an animation has been registered for the given id, return it. Otherwise
28  // creates a new one and returns a scoped_refptr to it.
29  scoped_refptr<LayerAnimationController> GetAnimationControllerForId(int id);
30
31  // Registers the given animation controller as active. An active animation
32  // controller is one that has a running animation that needs to be ticked.
33  void DidActivateAnimationController(LayerAnimationController* controller);
34
35  // Unregisters the given animation controller. When this happens, the
36  // animation controller will no longer be ticked (since it's not active). It
37  // is not an error to call this function with a deactivated controller.
38  void DidDeactivateAnimationController(LayerAnimationController* controller);
39
40  // Registers the given controller as alive.
41  void RegisterAnimationController(LayerAnimationController* controller);
42
43  // Unregisters the given controller as alive.
44  void UnregisterAnimationController(LayerAnimationController* controller);
45
46  const AnimationControllerMap& active_animation_controllers() const {
47    return active_animation_controllers_;
48  }
49
50  const AnimationControllerMap& all_animation_controllers() const {
51    return all_animation_controllers_;
52  }
53
54  void set_supports_scroll_animations(bool supports_scroll_animations) {
55    supports_scroll_animations_ = supports_scroll_animations;
56  }
57
58  bool supports_scroll_animations() { return supports_scroll_animations_; }
59
60 private:
61  AnimationRegistrar();
62
63  AnimationControllerMap active_animation_controllers_;
64  AnimationControllerMap all_animation_controllers_;
65
66  bool supports_scroll_animations_;
67
68  DISALLOW_COPY_AND_ASSIGN(AnimationRegistrar);
69};
70
71}  // namespace cc
72
73#endif  // CC_ANIMATION_ANIMATION_REGISTRAR_H_
74