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 UI_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_ 6 #define UI_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_ 7 8 #include <set> 9 #include <string> 10 11 #include "base/observer_list.h" 12 #include "ui/chromeos/ui_chromeos_export.h" 13 #include "ui/gfx/animation/animation_delegate.h" 14 #include "ui/gfx/animation/throb_animation.h" 15 16 namespace ui { 17 namespace network_icon { 18 19 class AnimationObserver; 20 21 // Single instance class to handle icon animations and keep them in sync. 22 class UI_CHROMEOS_EXPORT NetworkIconAnimation : public gfx::AnimationDelegate { 23 public: 24 NetworkIconAnimation(); 25 virtual ~NetworkIconAnimation(); 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 virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE; 37 38 static NetworkIconAnimation* GetInstance(); 39 40 private: 41 gfx::ThrobAnimation animation_; 42 ObserverList<AnimationObserver> observers_; 43 }; 44 45 } // namespace network_icon 46 } // namespace ui 47 48 #endif // UI_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_ 49
