/*

* Copyright (c) 2009 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:   ?Description

*

*/

//Includes

#include <QDebug>

#include <hbmenu.h>

#include <hbtoolbar.h>

#include <hblistview.h>

#include <hbmainwindow.h>

#include <hbdocumentloader.h>

#include <hbabstractviewitem.h>

#include <hblistviewitem.h>

//User Includes

#include "glxviewids.h"

#include "glxlistview.h"

#include "glxmodelparm.h"

#include "glxdocloaderdefs.h"

#include "glxcommandhandlers.hrh"

GlxListView::GlxListView(HbMainWindow *window) 

    : GlxView ( GLX_LISTVIEW_ID ), 

      mListView(NULL), 

      mView(NULL), 

      mWindow(window), 

      mModel ( NULL),

      mIsLongPress( false )

{

    qDebug("GlxListView::GlxListView()");

    mDocLoader = new HbDocumentLoader();

}

void GlxListView::activate()

{

    qDebug("GlxListView::activate() %d", mWindow->orientation() );    

    if (mListView == NULL) {

        createListView();

    }

 }

void GlxListView::deActivate()

{

    qDebug("GlxListView::deActivate()");

}

void GlxListView::setModel(QAbstractItemModel *model) 

{

    qDebug("GlxListView::setModel()");

    if ( mModel ) {

        disconnect(mModel, SIGNAL(listPopulated()), this, SLOT( populated()));

    }

    mModel =  model ;

    mListView->setModel(mModel);

    connect(mModel, SIGNAL(listPopulated()), this, SLOT( populated()));

}

void GlxListView::addToolBar( HbToolBar *toolBar ) 

{

    setToolBar(toolBar) ;

}

void GlxListView::initializeView( QAbstractItemModel *model, GlxView *preView )

{

    Q_UNUSED( preView )

    qDebug("GlxListView::initializeView()");

    if ( mListView == NULL ) {

        createListView();

    }

    setModel( model );

}

QGraphicsItem * GlxListView::getAnimationItem( GlxEffect transtionEffect )

{

    if ( transtionEffect == GRID_TO_ALBUMLIST  || transtionEffect == ALBUMLIST_TO_GRID ) {

        return mListView;

    }

    return NULL;

}

void GlxListView::addViewConnection ()

{

    qDebug("GlxListView::addViewConnection()");

    connect(mListView, SIGNAL(activated(const QModelIndex &)), this, SLOT( itemSelected(const QModelIndex &)));

    connect(mListView, SIGNAL(longPressed( HbAbstractViewItem*, QPointF )),this, SLOT( indicateLongPress( HbAbstractViewItem*, QPointF ) ) );

    connect( mListView, SIGNAL( scrollingEnded() ), this, SLOT( setVisvalWindowIndex() ) );

}

void GlxListView::removeViewConnection()

{

    qDebug("GlxListView::removeViewConnection()");

    disconnect(mListView, SIGNAL(activated(const QModelIndex &)), this, SLOT( itemSelected(const QModelIndex &)));

    disconnect(mListView, SIGNAL(longPressed( HbAbstractViewItem*, QPointF )),this, SLOT( indicateLongPress( HbAbstractViewItem*, QPointF ) ) );

    disconnect( mListView, SIGNAL( scrollingEnded() ), this, SLOT( setVisvalWindowIndex() ) );

}

void GlxListView::setVisvalWindowIndex()

{

    QList< HbAbstractViewItem * >  visibleItemList =  mListView->visibleItems();

    qDebug("GlxListView::setVisvalWindowIndex() %d", visibleItemList.count());    

    if ( visibleItemList.count() <= 0 )

        return ;

    HbAbstractViewItem *item = visibleItemList.at(0);    

    if ( item == NULL ) 

        return ;

    if (  item->modelIndex().row() < 0 || item->modelIndex().row() >= mModel->rowCount() )

        return ;

    mModel->setData( item->modelIndex (), item->modelIndex().row(), GlxVisualWindowIndex);

}

void GlxListView::loadListView()

{

    qDebug("GlxListView::loadListView()");

    bool loaded = true;

    //Load the widgets accroding to the current Orientation

    if (mListView == NULL ) {

        mDocLoader->load(GLX_LISTVIEW_DOCMLPATH,&loaded);

        if(loaded) {

            //retrieve the widgets

            mView = static_cast<HbView*>(mDocLoader->findWidget(QString(GLX_LISTVIEW_VIEW)));

            mListView = static_cast<HbListView*>(mDocLoader->findWidget(QString(GLX_LISTVIEW_LIST)));

            if( mListView ) { 

                //sets the widget

                setWidget((QGraphicsWidget*) mView);

                HbListViewItem *prototype = mListView->listItemPrototype();

                prototype->setStretchingStyle(HbListViewItem::StretchLandscape);

            }

        }  

    }

}

void GlxListView::createListView()

{

    qDebug("GlxListView::createListView()");

    loadListView(); 

    addViewConnection();  //only one time add the connection and remove in side the destructor    

}

GlxListView::~GlxListView()

{

    qDebug("GlxListView::~GlxListView()");

    if(widget()) {

        qDebug("GlxListView::~GlxListView() takeWidget");

        takeWidget();    

    }       

    removeViewConnection();

    if(mListView) {

        delete mListView;

        mListView = NULL;

    }

    if(mView) {

        delete mView ;

        mView = NULL;

    }

    if(mDocLoader) {

        delete mDocLoader;

        mDocLoader = NULL;

    }

}

void GlxListView::populated()

{

    QVariant variant = mModel->data(mModel->index(0,0), GlxVisualWindowIndex );

    int visualIndex = 0;

    if ( variant.isValid() &&  variant.canConvert<int> () ) 

    {

        visualIndex = variant.value<int>();

    }

	//Scroll To the Visible Index as mentioned in the AM.

    mListView->scrollTo(mModel->index(visualIndex, 0),  HbAbstractItemView::PositionAtTop );

}

void GlxListView::itemSelected(const QModelIndex &  index)

{

    qDebug("GlxListView::itemSelected() index = %d", index.row() );

    if ( mIsLongPress ) {

        mIsLongPress = false ;

        return ;

    }

    if ( mModel ) {

        mModel->setData( index, index.row(), GlxFocusIndexRole );

    }

    int curstate = NO_LIST_S; 

    qDebug() << "GlxListView::itemSelected READING STATE ";

    QVariant variant = mModel->data( mModel->index(0,0), GlxSubStateRole );    

    if ( variant.isValid() &&  variant.canConvert<int> () ) {

        curstate = variant.value<int>();

    }

    qDebug() << "GlxMenuManager::viewSubState = " << curstate ;

    if(curstate == FETCHER_ALBUM_S ){

        emit actionTriggered( EGlxCmdFetcherAlbumGridOpen );

    }else {        

        emit actionTriggered( EGlxCmdAlbumGridOpen );

    }

}

void GlxListView::indicateLongPress(HbAbstractViewItem *item, QPointF coords)

{

    qDebug() << "GlxListView:indicateLongPress Item " << item->modelIndex() << "long pressed at " << coords;

    if ( mModel ) {

        mModel->setData( item->modelIndex(), item->modelIndex().row(), GlxFocusIndexRole );

    }

    mIsLongPress = true;

    emit itemSpecificMenuTriggered(viewId(),coords);

}