/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#ifndef _GINEBRA_VISIBILITY_ANIMATOR_H_

#define _GINEBRA_VISIBILITY_ANIMATOR_H_

#include <QObject>

class ChromeSnippet;

class QTimeLine;

/**

 * \brief Base class for attention visibility delegates

 * 

 * \sa ChromeSnippet::setVisibilityAnimator()

 */

class VisibilityAnimator : public QObject

{

   Q_OBJECT

 public:

  VisibilityAnimator(ChromeSnippet* snippet):m_snippet(snippet), m_visible(true), m_timeLine(0){}

  virtual ~VisibilityAnimator();

  static VisibilityAnimator * create(const QString & name, ChromeSnippet* snippet);

  void toggleVisibility();

  void setTimeline(QTimeLine * timeline){m_timeLine = timeline;}

 public slots:

  virtual void updateVisibility(qreal step) = 0;

 protected:

  ChromeSnippet* m_snippet;

  bool m_visible;

  QTimeLine *m_timeLine;

};

#endif