/*

* 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: 

*

*/

#include <QtGui>

#include "mostvisitedpagestore.h"

#include "linearflowsnippet.h"

#include "mostvisitedpageview.h"

#include "webpagecontroller.h"

#include "BookmarksManager.h"

const int KLinearSnippetHeight = 120;

namespace GVA {

MostVisitedPagesWidget::MostVisitedPagesWidget(ChromeSnippet* snippet,QGraphicsWidget* parent) 

                        : m_snippet(snippet)

                        , QGraphicsWidget(parent)

                        , m_parent(parent)

                        , m_flowInterface(0)

                        , m_hideOnClose(true)

{

    setFlags(QGraphicsItem::ItemDoesntPropagateOpacityToChildren);

    setOpacity(0.5);

    m_mostVisitedPageStore = new MostVisitedPageStore();

    WebPageController* pageController = WebPageController::getSingleton();

    bool ret = connect(pageController, SIGNAL(loadFinished(const bool)), this, SLOT(onLoadFinished(const bool)));

}

MostVisitedPagesWidget::~MostVisitedPagesWidget()

{

    if (m_flowInterface)

        m_flowInterface->deleteLater();

    if (m_mostVisitedPageStore)

        delete m_mostVisitedPageStore;

    WebPageController* pageController = WebPageController::getSingleton();

    disconnect(pageController, SIGNAL(loadFinished()), this, SLOT(onLoadFinished()));

}

void MostVisitedPagesWidget::open()

{

    if (m_flowInterface)

        delete m_flowInterface;

    m_flowInterface = new GVA::LinearFlowSnippet(this);

    m_flowInterface->setZValue(m_parent->zValue() + 1);

    m_flowInterface->resize(QSize(m_parent->size().width(), KLinearSnippetHeight));

    connect(m_flowInterface, SIGNAL(mouseEvent(QEvent::Type)),this->m_snippet,SIGNAL(snippetMouseEvent(QEvent::Type)));

    //Initialize the page selection index

    m_selectIndex = -1;

    QString displayMode;

    if (m_parent->size().width() > m_parent->size().height()) {

        displayMode = "Landscape";

    } else {

        displayMode = "Portrait";

    }

    m_flowInterface->init(displayMode,"Most Visited Pages");

    MostVisitedPageList mvPageList = m_mostVisitedPageStore->pageList();

    for (int i = 0; i < mvPageList.size(); i++) {

        QImage *pageThumbnail = mvPageList[i]->m_pageThumbnail;

        bool removeTempThumbnail = false;

        if (!pageThumbnail) {

            removeTempThumbnail = true;

            pageThumbnail = new QImage("");

        }

        QUrl url = QUrl(mvPageList[i]->m_url);

        m_flowInterface->addSlide(*pageThumbnail, url.host());

        if (removeTempThumbnail) {

            delete pageThumbnail;

        }

    }

    setCenterIndex(displayMode);

    m_flowInterface->prepareStartAnimation();

    m_flowInterface->runStartAnimation();

    m_flowInterface->installEventFilter(this);

    connect(m_flowInterface, SIGNAL(ok(int)), this, SLOT(okTriggered(int)));

    connect(m_flowInterface, SIGNAL(endAnimationCplt()), this, SLOT(closeAnimationCompleted()));

}

void MostVisitedPagesWidget::close(bool hide)

{

    //This will trigger close animation after which

    //the cleanup is done in closeAnimationCompleted

    if (m_flowInterface)

        m_flowInterface->runEndAnimation();

    m_hideOnClose = hide;

}

void MostVisitedPagesWidget::updatePos(QPointF pos, qreal &toolBarHeight)

{

    QGraphicsWidget::setPos(pos);

    m_flowInterface->setPos(pos.x(), m_parent->size().height() - toolBarHeight - KLinearSnippetHeight);

}

void MostVisitedPagesWidget::resize(const QSize &size)

{

    QGraphicsWidget::resize(size);

    m_flowInterface->resize(QSize(m_parent->size().width(), KLinearSnippetHeight));

}

void MostVisitedPagesWidget::displayModeChanged(QString& newMode)

{

    m_flowInterface->displayModeChanged(newMode); 

}

void MostVisitedPagesWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)

{

    painter->fillRect(0, 0, size().width(), size().height(), QColor(107, 109, 107));

    QGraphicsWidget::paint(painter, option, widget);

}

void MostVisitedPagesWidget::setCenterIndex(QString displayMode)

{

    //display beginning of the film strip first

    m_flowInterface->setCenterIndex((displayMode == "Portrait") ? 1 : 2);

}

void MostVisitedPagesWidget::mousePressEvent(QGraphicsSceneMouseEvent* event)

{

    close();

}

void MostVisitedPagesWidget::okTriggered(int index)

{

    Q_ASSERT(m_flowInterface);

    m_selectIndex = index;

    close();    

}

void MostVisitedPagesWidget::closeAnimationCompleted()

{

    if (!m_flowInterface)

        return;

    QGraphicsWidget::hide();

    disconnect(m_flowInterface, SIGNAL(ok(int)), this, SLOT(okTriggered(int)));

    disconnect(m_flowInterface, SIGNAL(endAnimationCplt()), this, SLOT(closeAnimationCompleted()));

    disconnect(m_flowInterface, SIGNAL(mouseEvent(QEvent::Type)),this->m_snippet,SIGNAL(snippetMouseEvent(QEvent::Type)));

    m_flowInterface->removeEventFilter(this);

    m_flowInterface->deleteLater();

    m_flowInterface = NULL;

    if (m_selectIndex != -1)

        static_cast<ChromeWidget*>(m_parent)->loadUrlToCurrentPage(m_mostVisitedPageStore->pageAt(m_selectIndex)->pageUrl());

    if (m_snippet->isVisible() && m_hideOnClose)

        m_snippet->ChromeSnippet::toggleVisibility();

    m_hideOnClose = false;

    emit closeComplete();

}

void MostVisitedPagesWidget::updateMVGeometry()

{

    qreal toolBarHeight;

    ChromeSnippet* visibleSnippet= static_cast<ChromeWidget*>(m_parent)->getSnippet("WebViewToolbarId");

    if (visibleSnippet)

        toolBarHeight = visibleSnippet->widget()->geometry().height(); 

    resize(m_parent->size().toSize());

    updatePos(QPointF(0, 0), toolBarHeight);

}

 void MostVisitedPagesWidget::updateMVStore(QWebPage *page)

  {

    Q_ASSERT(page);

    Q_ASSERT(!page->mainFrame()->url().isEmpty());

    QImage* pageThumbnail = 0;

    QUrl pageUrl = page->mainFrame()->url();

    int pageRank = 0;

    //check if page exits in store along with its thumbnail

    if (!m_mostVisitedPageStore->contains(pageUrl.toString(), true)) {

        QSize thumbnailSize(200, 200);

        pageThumbnail = new QImage(thumbnailSize.width(), thumbnailSize.height(), QImage::Format_RGB32); 

        QPainter painter(pageThumbnail);

        qreal webcoreScale = page->mainFrame()->zoomFactor();

        painter.scale(1.f / webcoreScale, 1.f / webcoreScale);

        painter.fillRect(0, 0, size().width(), size().height(), QColor(255, 255, 255));

        page->mainFrame()->render(&painter, QWebFrame::AllLayers, QRegion(0, 0, thumbnailSize.width(), thumbnailSize.height()));

    }

    //if it is a new page to the store, get its rank from history

    //FIX ME : need to optimize this code

    pageRank = WRT::BookmarksManager::getSingleton()->getPageRank(pageUrl.toString());

    m_mostVisitedPageStore->pageAccessed(pageUrl, pageThumbnail, pageRank);

  }

 void MostVisitedPagesWidget::onLoadFinished(const bool ok)

 {

     if (ok) {

        WRT::WrtBrowserContainer * activePage = WebPageController::getSingleton()->currentPage();

        updateMVStore(activePage);

     }

 }

} // endof namespace GVA