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// Copyright (c) 2013 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 UI_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_
#define UI_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_
#include <set>
#include <string>
#include "base/observer_list.h"
#include "ui/chromeos/ui_chromeos_export.h"
#include "ui/gfx/animation/animation_delegate.h"
#include "ui/gfx/animation/throb_animation.h"
namespace ui {
namespace network_icon {
class AnimationObserver;
// Single instance class to handle icon animations and keep them in sync.
class UI_CHROMEOS_EXPORT NetworkIconAnimation : public gfx::AnimationDelegate {
public:
NetworkIconAnimation();
~NetworkIconAnimation() override;
// Returns the current animation value, [0-1].
double GetAnimation();
// The animation stops when all observers have been removed.
// Be sure to remove observers when no associated icons are animating.
void AddObserver(AnimationObserver* observer);
void RemoveObserver(AnimationObserver* observer);
// gfx::AnimationDelegate implementation.
void AnimationProgressed(const gfx::Animation* animation) override;
static NetworkIconAnimation* GetInstance();
private:
gfx::ThrobAnimation animation_;
base::ObserverList<AnimationObserver> observers_;
};
} // namespace network_icon
} // namespace ui
#endif // UI_CHROMEOS_NETWORK_NETWORK_ICON_ANIMATION_H_