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1 // Copyright (c) 2013 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 ASH_COMMON_SYSTEM_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_ | |
6 #define ASH_COMMON_SYSTEM_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_ | |
7 | |
8 #include <set> | |
9 #include <string> | |
10 | |
11 #include "ash/ash_export.h" | |
12 #include "base/observer_list.h" | |
13 #include "ui/gfx/animation/animation_delegate.h" | |
14 #include "ui/gfx/animation/throb_animation.h" | |
15 | |
16 namespace ash { | |
17 namespace network_icon { | |
18 | |
19 class AnimationObserver; | |
20 | |
21 // Single instance class to handle icon animations and keep them in sync. | |
22 class ASH_EXPORT NetworkIconAnimation : public gfx::AnimationDelegate { | |
23 public: | |
24 NetworkIconAnimation(); | |
25 ~NetworkIconAnimation() override; | |
26 | |
27 // Returns the current animation value, [0-1]. | |
28 double GetAnimation(); | |
29 | |
30 // The animation stops when all observers have been removed. | |
31 // Be sure to remove observers when no associated icons are animating. | |
32 void AddObserver(AnimationObserver* observer); | |
33 void RemoveObserver(AnimationObserver* observer); | |
34 | |
35 // gfx::AnimationDelegate implementation. | |
36 void AnimationProgressed(const gfx::Animation* animation) override; | |
37 | |
38 static NetworkIconAnimation* GetInstance(); | |
39 | |
40 private: | |
41 gfx::ThrobAnimation animation_; | |
42 base::ObserverList<AnimationObserver> observers_; | |
43 }; | |
44 | |
45 } // namespace network_icon | |
46 } // namespace ash | |
47 | |
48 #endif // ASH_COMMON_SYSTEM_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_ | |
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