/*

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

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, version 2.1 of the License.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not,

* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

*

* Description:

*

*/

#include "VisibilityAnimator.h"

#include <QTimeLine>

// NB: These includes go away when plugins are implemented

#include "animators/FadeAnimator.h"

#include "animators/SlideAnimator.h"

namespace GVA {

VisibilityAnimator::~VisibilityAnimator(){

  delete m_timeLine;

}

// NB: Replace factory implementation with hash table populated by plugin discovery

VisibilityAnimator * VisibilityAnimator:: create(const QString & name, ChromeSnippet* snippet){

  if (name.compare("G_VISIBILITY_SLIDE_ANIMATOR") == 0){

    return new SlideAnimator(snippet);

  }

  if (name.compare("G_VISIBILITY_FADE_ANIMATOR") == 0){

    return new FadeAnimator(snippet);

  }

  return 0;

}

void VisibilityAnimator::setVisible(bool visible, bool animate){

  m_visible = visible;

  if (!animate) {

    updateVisibility((m_visible)?0.0:1.0);

    return;

  }

  if (!m_timeLine) {

    m_timeLine = new QTimeLine(m_duration); //Default to .5 sec

    connect(m_timeLine, SIGNAL(valueChanged(qreal)),

        this, SLOT(updateVisibility(qreal)));

    connect(m_timeLine, SIGNAL(finished()),

        this, SLOT(onFinished()));

  }

  else {

    m_timeLine->stop();

  }

  if (!m_visible) {

    m_timeLine->setDirection(QTimeLine::Forward);

  }

  else {

    m_timeLine->setDirection(QTimeLine::Backward);

    m_timeLine->setStartFrame(m_timeLine->endFrame());

  }

  emit started(m_visible);

  m_timeLine->start();

}

void VisibilityAnimator::onFinished()

{

  emit finished(m_visible);

}

}