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_SYSTEM_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_ 6#define ASH_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 16namespace ash { 17namespace network_icon { 18 19class AnimationObserver; 20 21// Single instance class to handle icon animations and keep them in sync. 22class ASH_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 ash 47 48#endif // ASH_SYSTEM_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_ 49