/*

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

* All rights reserved.

*

*

*

*

*/

#include "ContentToolbarChromeItem.h"

#include "GWebContentView.h"

#include "mostvisitedsnippet.h"

#include <QTimeLine>

#include <QDebug>

#define TOOLBAR_MARGIN 4

namespace GVA {

  {

  }

  ToolbarFadeAnimator::~ToolbarFadeAnimator() {

    if (m_timeLine)

      delete m_timeLine;

  }

  void ToolbarFadeAnimator::start(bool visible) {

    //qDebug() << __PRETTY_FUNCTION__ << visible;

    if (!m_timeLine) {

      connect(m_timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(valueChange(qreal)));

      connect(m_timeLine, SIGNAL(finished()), this, SIGNAL(finished()));

    }

    else {

      m_timeLine->stop();

    }

    if (!visible) {

      m_timeLine->setDirection(QTimeLine::Forward);

    }

    else {

      m_timeLine->setDirection(QTimeLine::Backward);

    }

    m_timeLine->start();

  }

  void ToolbarFadeAnimator::stop() {

    //qDebug() << __PRETTY_FUNCTION__ ;

    m_timeLine->stop();

  }

  void ToolbarFadeAnimator::valueChange(qreal step) {

  }

  ContentToolbarChromeItem::ContentToolbarChromeItem(QGraphicsItem* parent)

      m_background(NULL),

      m_state(CONTENT_TOOLBAR_STATE_FULL),

  {

    m_inactivityTimer = new QTimer(this);

    connect(m_inactivityTimer, SIGNAL(timeout()), this, SLOT(onInactivityTimer()));

    m_animator = new ToolbarFadeAnimator();

    connect(m_animator, SIGNAL(updateVisibility(qreal)), this, SLOT(onUpdateVisibility(qreal)));

    connect(m_animator, SIGNAL(finished()), this, SLOT(onAnimFinished()));

    setFlags(QGraphicsItem::ItemDoesntPropagateOpacityToChildren);

  }

  ContentToolbarChromeItem::~ContentToolbarChromeItem()

  {

        delete m_background;

    delete m_inactivityTimer;

    delete m_animator;

  }

  void ContentToolbarChromeItem::resizeEvent(QGraphicsSceneResizeEvent * ev)

  {

    //qDebug() << __PRETTY_FUNCTION__ << boundingRect();

    ToolbarChromeItem::resizeEvent(ev);

    addFullBackground();

  }

  void ContentToolbarChromeItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* opt, QWidget* widget)

  {

    Q_UNUSED(opt)

    Q_UNUSED(widget)

//    qDebug() << __PRETTY_FUNCTION__ << m_state;

    painter->save();

    painter->setRenderHint(QPainter::Antialiasing);

    painter->setPen(pen());

    painter->setOpacity(m_bgopacity);

    switch (m_state) {

        case CONTENT_TOOLBAR_STATE_PARTIAL:

          ToolbarChromeItem::paint(painter, opt, widget);

          break;

        case CONTENT_TOOLBAR_STATE_ANIM_TO_FULL:

        case CONTENT_TOOLBAR_STATE_ANIM_TO_PARTIAL:

          ToolbarChromeItem::paint(painter, opt, widget);

        case CONTENT_TOOLBAR_STATE_FULL:

          // fill path with color

          painter->fillPath(*m_background,QBrush(grad()));

          painter->drawPath(*m_background);

          break;

        default:

          qDebug() << "ContentToolbarChromeItem::paint invalid state" ;

          break;

    }

    // restore painter

  }

  }

  }

  void ContentToolbarChromeItem::onSnippetMouseEvent( QEvent::Type type) {

            changeState(CONTENT_TOOLBAR_STATE_ANIM_TO_FULL);

            break;

          case CONTENT_TOOLBAR_STATE_ANIM_TO_PARTIAL:

            // Stop animation and change to full immediately

            m_animator->stop();

            changeState(CONTENT_TOOLBAR_STATE_FULL, false);

            break;

          case CONTENT_TOOLBAR_STATE_ANIM_TO_FULL:

            // Do nothing here - will reset inactivity timer when

            // animation completes

            break;

          case CONTENT_TOOLBAR_STATE_FULL:

            break;

          default:

            break;

        }

  }

  void ContentToolbarChromeItem::onMVCloseComplete() {

    disconnect(mv, SIGNAL(mostVisitedSnippetCloseComplete()) , this, SLOT(onMVCloseComplete()));

    // MostVisitedSnippet animation complete, so let's do toolbar animation

      changeState(CONTENT_TOOLBAR_STATE_ANIM_TO_PARTIAL, true);

  }

  void ContentToolbarChromeItem::onUpdateVisibility(qreal step) {

      update();

    }

  }

  void ContentToolbarChromeItem::onAnimFinished() {

    switch (m_state) {

        case CONTENT_TOOLBAR_STATE_ANIM_TO_PARTIAL:

          changeState(CONTENT_TOOLBAR_STATE_PARTIAL);

          break;

        case CONTENT_TOOLBAR_STATE_ANIM_TO_FULL:

          changeState(CONTENT_TOOLBAR_STATE_FULL, true);

          break;

        default:

          break;

    }

  }

  void ContentToolbarChromeItem::addFullBackground() {

    //qDebug() << __PRETTY_FUNCTION__ ;

    qreal roundness((boundingRect().height() -TOOLBAR_MARGIN)/2);

    QRectF r(1, 1, boundingRect().width()-TOOLBAR_MARGIN, boundingRect().height()-TOOLBAR_MARGIN);

    if (m_background ) {

        delete m_background;

        m_background = NULL;

    }

    m_background = new QPainterPath();

    m_background->addRoundedRect(r, roundness, roundness);

  }

    // Show the middle snippet and reset the opacity if we are here directly with no aniamtion

    if (!animate) {

    }

    m_state = CONTENT_TOOLBAR_STATE_FULL;

    // TODO: specify the rect to be updated to avoid full repaint

    update();

  }

  void ContentToolbarChromeItem::stateEnterPartial(bool animate) {

    //qDebug() <<__PRETTY_FUNCTION__ ;

    Q_UNUSED(animate);

    // Explicity hide the linked snippets so that toggle button javascript gets the right

    // signals that it is expecting

    m_state = CONTENT_TOOLBAR_STATE_PARTIAL;

  }

  void ContentToolbarChromeItem::stateEnterAnimToFull(bool animate) {

    //qDebug() <<__PRETTY_FUNCTION__ ;

    Q_UNUSED(animate);

    m_state = CONTENT_TOOLBAR_STATE_ANIM_TO_FULL;

    m_animator->start(false);

  }

  void ContentToolbarChromeItem::stateEnterAnimToPartial(bool animate) {

    if (animate ) {

      m_animator->start(true);

    }

    else {

      connect(mv, SIGNAL(mostVisitedSnippetCloseComplete()) , this, SLOT(onMVCloseComplete()));

      mv->close();

    }

  }

  void ContentToolbarChromeItem::changeState( ContentToolbarState state, bool animate){

    onStateEntry(state, animate);

  }

  void ContentToolbarChromeItem::onStateEntry(ContentToolbarState state, bool animate){

   //qDebug() << __PRETTY_FUNCTION__ ;

   switch (state) {

        case CONTENT_TOOLBAR_STATE_PARTIAL:

          stateEnterPartial(animate);

          break;

        case CONTENT_TOOLBAR_STATE_ANIM_TO_FULL:

          stateEnterAnimToFull(animate);

          break;

        case CONTENT_TOOLBAR_STATE_ANIM_TO_PARTIAL:

          stateEnterAnimToPartial(animate);

          break;

        case CONTENT_TOOLBAR_STATE_FULL:

          stateEnterFull(animate);

          break;

        default:

          qDebug() << "ContentToolbarChromeItem::onStateEntry -  invalid state" ;

          break;

    }

  }

  bool ContentToolbarChromeItem::mvSnippetVisible() {

    bool result = false;

    if (mv && mv->isVisible() ) {

      result = true;

    }

    return result;

  }

    }

  }

} // end of namespace GVA