/*

* 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 <hbmainwindow.h>

#include <hggrid.h>

#include <glxmodelwrapper.h>

#include <hbpushbutton.h>

#include <HbToolBar> // Temp

#include <hbiconitem.h>

#include <hbicon.h>

#include <xqserviceutil.h>

#include <hbcheckbox.h>

#include <hblabel.h>

#include <QString>

#include <hbframeitem.h>

//User Includes

#include "glxviewids.h"

#include "glxgridview.h"

#include "glxmodelparm.h"

#include "glxcommandhandlers.hrh"

#include "glxicondefs.h"

#include "glxlocalisationstrings.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "glxgridviewTraces.h"

#endif

GlxGridView::GlxGridView(HbMainWindow *window) 

    : GlxView ( GLX_GRIDVIEW_ID ), 

      mWindow(window), 

      mModel ( NULL), 

      mWidget(NULL),

      mSelectionModel(NULL),

      mModelWrapper(NULL),

      mUiOnButton(NULL),

      mCameraButton(NULL),

      mScrolling(FALSE),

      mIconItem(NULL),

      mMarkCheckBox(NULL),

      mCountItem(NULL),

      mMainLabel(NULL),

      mCountLabel(NULL),

      mZeroItemLabel(NULL),

      mAlbumName(NULL)

{

    OstTraceFunctionEntry0( GLXGRIDVIEW_GLXGRIDVIEW_ENTRY );

    mModelWrapper = new GlxModelWrapper();

    mModelWrapper->setRoles(GlxQImageSmall);

    mIconItem = new HbIconItem(this);

    OstTraceFunctionExit0( GLXGRIDVIEW_GLXGRIDVIEW_EXIT );

}

void GlxGridView::activate()

{

    OstTraceFunctionEntry0( GLXGRIDVIEW_ACTIVATE_ENTRY );

    if(mUiOnButton == NULL) {

        mUiOnButton = new HbPushButton(this);

        connect(mUiOnButton, SIGNAL(clicked(bool)), this, SLOT(uiButtonClicked(bool)));

        mUiOnButton->setGeometry(QRectF(590,0,40,40));

        mUiOnButton->setZValue(1);

        mUiOnButton->setIcon(HbIcon(GLXICON_WALL_UI_ON));

        mUiOnButton->hide();

    }

    loadGridView();

	connect(mWindow, SIGNAL(orientationChanged(Qt::Orientation)), this, SLOT(orientationchanged(Qt::Orientation)),Qt::UniqueConnection);

    if(mCountItem == NULL) {

        mCountItem = new HbLabel(this);        

        HbFrameItem *frame = new HbFrameItem(this); //graphics for mCountItem

        frame->frameDrawer().setFrameType(HbFrameDrawer::NinePieces);

        frame->frameDrawer().setFrameGraphicsName("qtg_fr_multimedia_trans");

        frame->graphicsItem()->setOpacity(1);

        mCountItem->setBackgroundItem(frame->graphicsItem(),-1);

    }

    OstTraceFunctionExit0( GLXGRIDVIEW_ACTIVATE_EXIT );

}

void GlxGridView::deActivate()

{

    OstTraceFunctionEntry0( GLXGRIDVIEW_DEACTIVATE_ENTRY );

    mScrolling = FALSE;

        mUiOnButton->hide();

        mIconItem->hide();

        mIconItem->resetTransform();

        mIconItem->setOpacity(0);

        mIconItem->setZValue(mIconItem->zValue()-20);

        mCountItem->hide();

        mAlbumName->hide();

        mZeroItemLabel->hide();

        mCameraButton->hide();

    disconnect(mWindow, SIGNAL(orientationChanged(Qt::Orientation)), this, SLOT(orientationchanged(Qt::Orientation)));

    OstTraceFunctionExit0( GLXGRIDVIEW_DEACTIVATE_EXIT );

}

void GlxGridView::initializeView(QAbstractItemModel *model)

{

    activate();

    setModel(model);

}

void GlxGridView::clearCurrentModel()

{

    if ( mModel ) {

        disconnect(mModel, SIGNAL(rowsInserted(QModelIndex,int,int)), this, SLOT(showItemCount()));

        disconnect(mModel, SIGNAL(rowsRemoved(QModelIndex,int,int)), this, SLOT(showItemCount()));

        disconnect(mModel, SIGNAL(destroyed()), this, SLOT( clearCurrentModel()));

        disconnect(mModel, SIGNAL(albumTitleAvailable(QString)), this, SLOT(showAlbumTitle(QString)));

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

        mModel = NULL ;

    }

}

void GlxGridView::initializeNewModel()

{

    if ( mModel ) {

        connect(mModel, SIGNAL(rowsInserted(QModelIndex,int,int)), this, SLOT(showItemCount()));

        connect(mModel, SIGNAL(rowsRemoved(QModelIndex,int,int)), this, SLOT(showItemCount()));

        connect(mModel, SIGNAL(destroyed()), this, SLOT( clearCurrentModel()));

        connect(mModel, SIGNAL(albumTitleAvailable(QString)), this, SLOT(showAlbumTitle(QString)));

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

    }

}

void GlxGridView::setModel(QAbstractItemModel *model)

{

    OstTraceFunctionEntry0( GLXGRIDVIEW_SETMODEL_ENTRY );

    if(model)

        {

        clearCurrentModel();

        mModel = model;

        initializeNewModel();

        QVariant variantimage = mModel->data(mModel->index(0,0),GlxDefaultImage);

        if (mWidget && variantimage.isValid() &&  variantimage.canConvert<QImage> () )

            {

            mWidget->setDefaultImage(variantimage.value<QImage>());

            }

        mModelWrapper->setModel(mModel);

        mWidget->setModel(mModelWrapper);  

        if(!mSelectionModel)

            {

            mSelectionModel = new QItemSelectionModel(mModelWrapper, this);

            connect(mSelectionModel, SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)), this, SLOT(visibleIndexChanged(const QModelIndex &, const QModelIndex &)));

            mWidget->setSelectionModel(mSelectionModel);

            }

        scrolltofocus();  // Need to do it here ?

        showItemCount();

        }

    OstTraceFunctionExit0( GLXGRIDVIEW_SETMODEL_EXIT );

}

void GlxGridView::visibleIndexChanged(const QModelIndex& current, const QModelIndex& previous)

{

    if(mScrolling)

        {

        Q_UNUSED(previous);

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

            {

            mModel->setData(mModel->index(0,0),current.row(),GlxVisualWindowIndex);

            }

        }

}

void GlxGridView::addToolBar( HbToolBar *toolBar ) 

{

    OstTraceFunctionEntry0( GLXGRIDVIEW_ADDTOOLBAR_ENTRY ); 

    setToolBar(toolBar);  

    hideorshowitems(mWindow->orientation());

    OstTraceFunctionExit0( GLXGRIDVIEW_ADDTOOLBAR_EXIT );

}

void GlxGridView::enableMarking()

{

    OstTrace0( TRACE_NORMAL, GLXGRIDVIEW_ENABLEMARKING, "GlxGridView::enableMarking" );

    mWidget->setSelectionMode(HgWidget::MultiSelection);

    if (mMainLabel == NULL) {

        mMainLabel = new HbLabel("Select Photos", this);        

        HbFrameItem *frame1 = new HbFrameItem(this);    //graphics for mMainLabel

        frame1->frameDrawer().setFrameType(HbFrameDrawer::NinePieces);

        frame1->frameDrawer().setFrameGraphicsName("qtg_fr_multimedia_trans");

        frame1->graphicsItem()->setOpacity(1);

        mMainLabel->setBackgroundItem(frame1->graphicsItem(),-1);

    }

    if (mMarkCheckBox == NULL) {

        mMarkCheckBox = new HbCheckBox(GLX_OPTION_MARK_ALL, this);        

        HbFrameItem *frame2 = new HbFrameItem(this);    //graphics for mMarkCheckBox

        frame2->frameDrawer().setFrameType(HbFrameDrawer::NinePieces);

        frame2->frameDrawer().setFrameGraphicsName("qtg_fr_multimedia_trans");

        frame2->graphicsItem()->setOpacity(1);

        mMarkCheckBox->setBackgroundItem(frame2->graphicsItem(),-1);

    }

    if (mCountLabel == NULL) {

        mCountLabel = new HbLabel(this);        

        HbFrameItem *frame3 = new HbFrameItem(this);    //graphics for mCountLabel

        frame3->frameDrawer().setFrameType(HbFrameDrawer::NinePieces);

        frame3->frameDrawer().setFrameGraphicsName("qtg_fr_multimedia_trans");

        frame3->graphicsItem()->setOpacity(1);

        mCountLabel->setBackgroundItem(frame3->graphicsItem(),-1);

    }

    hideorshowitems(mWindow->orientation());

    connect( mWidget->selectionModel() , SIGNAL( selectionChanged(const QItemSelection &, const QItemSelection& ) ), this, SLOT( showMarkedItemCount() ) );

    connect(mMarkCheckBox, SIGNAL( stateChanged(int) ), this, SLOT( stateChanged(int)));

}

void GlxGridView::disableMarking() 

{

    OstTrace0( TRACE_NORMAL, GLXGRIDVIEW_DISABLEMARKING, "GlxGridView::disableMarking" );

    mWidget->setSelectionMode(HgWidget::NoSelection);

    disconnect( mWidget->selectionModel() , SIGNAL( selectionChanged(const QItemSelection &, const QItemSelection& ) ), this, SLOT( showMarkedItemCount() ) );

    disconnect(mMarkCheckBox, SIGNAL( stateChanged(int) ), this, SLOT( stateChanged(int)));

    if (mMainLabel) {

        mMainLabel->hide();

    }

    if (mMarkCheckBox) {

        mMarkCheckBox->setCheckState(Qt::Unchecked);

        mMarkCheckBox->hide();

    }

    if (mCountLabel) {

        mCountLabel->hide();

    }

    hideorshowitems(mWindow->orientation());

}

void GlxGridView::stateChanged(int state)

{

    if(state)

        handleUserAction(EGlxCmdMarkAll);

    else

        handleUserAction(EGlxCmdUnMarkAll);

}

void GlxGridView::showMarkedItemCount()

{

    int count = mModel->rowCount();

    QModelIndexList indexList = mWidget->selectionModel()->selectedIndexes();

    int markItemCount = indexList.count();

    QString text= QString("%1 / %2").arg( markItemCount ).arg( count );

    mCountLabel->setPlainText( text );

}

void GlxGridView::showItemCount()

{

    int count = 0;

    if(mModel) {

        count = mModel->rowCount();

        QSize deviceSize = HbDeviceProfile::current().logicalSize();

        QSize screenSize = ( mWindow->orientation() == Qt::Vertical ) ? QSize( deviceSize.width(), deviceSize.height() )

                                                                       : QSize( deviceSize.height(), deviceSize.width() )  ;

        if(count) {

            if(mZeroItemLabel) {

                mZeroItemLabel->hide();

            }

            if(mCameraButton) {

                mCameraButton->hide();

            }

            if(isItemVisible(Hb::TitleBarItem)) {

                QString text;

                if (getSubState() == ALL_ITEM_S) {

					if (mAlbumName) {

                    	mAlbumName->hide();

					}

                    mCountItem->setGeometry(QRectF(0,0,screenSize.width(),deviceSize.height()/24));

                    text = QString("%1 Items").arg( count );

                    mCountItem->setPlainText( text );

                    mCountItem->setAlignment(Qt::AlignLeft);

                    mCountItem->show();

                }

                else if (getSubState() == ALBUM_ITEM_S) {

                    mCountItem->hide();

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

                    if (variant.toString() != NULL) {

                        showAlbumTitle(variant.toString());

                    }

                }

            }

            else {

                if (mCountItem) {

                    mCountItem->hide();

                }

                if (mAlbumName) {

                    mAlbumName->hide();

                }

            }

        }

        else {

            bool populated = FALSE;

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

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

                {

                populated = variant.value<bool>();

                }

            if(populated) {

                if (mCountItem) {

                    mCountItem->hide();

                }

                if (mAlbumName) {

                    mAlbumName->hide();

                }

                showNoImageString();            

                if (getSubState() == ALBUM_ITEM_S) {                

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

                    if (variant.toString() != NULL) {

                        showAlbumTitle(variant.toString());

                    }

                }

            }

        }

    }

}

void GlxGridView::showAlbumTitle(QString aTitle)

{

    int count = mModel->rowCount();

    QSize deviceSize = HbDeviceProfile::current().logicalSize();

    QSize screenSize = ( mWindow->orientation() == Qt::Vertical ) ? QSize( deviceSize.width(), deviceSize.height() )

                                                                   : QSize( deviceSize.height(), deviceSize.width() )  ;

    if(mAlbumName == NULL) {

        mAlbumName = new HbLabel(this);            

        HbFrameItem *frame = new HbFrameItem(this); //graphics for mAlbumName

        frame->frameDrawer().setFrameType(HbFrameDrawer::NinePieces);

        frame->frameDrawer().setFrameGraphicsName("qtg_fr_multimedia_trans");

        frame->graphicsItem()->setOpacity(1);

        mAlbumName->setBackgroundItem(frame->graphicsItem(),-1);

    }

    if(count && isItemVisible(Hb::TitleBarItem)) {        

        mAlbumName->setGeometry(QRectF(0,0,screenSize.width()/2,deviceSize.height()/24));

        QString text = QString(aTitle);

        mAlbumName->setPlainText( text );

        mAlbumName->show();

        mCountItem->setGeometry(QRectF(screenSize.width()/2,0,screenSize.width()/2,deviceSize.height()/24));

        text = QString("(%1)").arg(count);

        mCountItem->setPlainText( text );

        mCountItem->setAlignment(Qt::AlignRight);

        mCountItem->show();

    }    

    else if((!count) && isItemVisible(Hb::TitleBarItem)) {

        mAlbumName->setGeometry(QRectF(0,0,screenSize.width(),deviceSize.height()/24));

        QString text = QString(aTitle);

        mAlbumName->setPlainText( text );

        mAlbumName->show();

    }

}

void GlxGridView::showNoImageString()

{

    qreal chromeHeight = 0.0;

    QSize deviceSize = HbDeviceProfile::current().logicalSize();

    QSize screenSize = ( mWindow->orientation() == Qt::Vertical ) ? QSize( deviceSize.width(), deviceSize.height() )

                                                                   : QSize( deviceSize.height(), deviceSize.width() )  ;

    qreal midHeight = screenSize.height()/2;

    if (isItemVisible(Hb::TitleBarItem)) {

        style()->parameter("hb-param-widget-chrome-height", chromeHeight);

        midHeight -= chromeHeight;

    }

    if (mZeroItemLabel == NULL) {                

        mZeroItemLabel = new HbLabel("(No Images)\n To capture images Open", this);

    }

    mZeroItemLabel->setGeometry(QRectF(0, midHeight - deviceSize.height()/16, screenSize.width(), 3*deviceSize.height()/32));

    mZeroItemLabel->setAlignment(Qt::AlignHCenter);

    mZeroItemLabel->show();

    if (mCameraButton == NULL) {

        mCameraButton = new HbPushButton(this);

        mCameraButton->setIcon(HbIcon(GLXICON_CAMERA));

        connect(mCameraButton, SIGNAL(clicked(bool)), this, SLOT(cameraButtonClicked(bool)));

    }

    mCameraButton->setGeometry(QRectF(screenSize.width()/2 - 3*deviceSize.height()/64, midHeight + deviceSize.height()/32, deviceSize.height()/32, deviceSize.height()/32));

    mCameraButton->show();

}

void GlxGridView::populated()

{

    showItemCount();

}

void GlxGridView::handleUserAction(qint32 commandId)

{

    OstTrace0( TRACE_NORMAL, GLXGRIDVIEW_HANDLEUSERACTION, "GlxGridView::handleUserAction" );

    switch( commandId ) {

        case EGlxCmdMarkAll :

            mWidget->selectAll();

            break;

        case EGlxCmdUnMarkAll :

            mWidget->clearSelection();

            break;        

        default :

            break;

    }    

}

QItemSelectionModel * GlxGridView::getSelectionModel()

{

    OstTrace0( TRACE_NORMAL, GLXGRIDVIEW_GETSELECTIONMODEL, "GlxGridView::getSelectionModel" );

    return mWidget->selectionModel();

}

QGraphicsItem * GlxGridView::getAnimationItem(GlxEffect transitionEffect)

{

    OstTraceFunctionEntry0( GLXGRIDVIEW_GETANIMATIONITEM_ENTRY );

    int selIndex = -1;

    if ( transitionEffect == FULLSCREEN_TO_GRID ) {

        return mWidget;

    }

    if ( transitionEffect == GRID_TO_FULLSCREEN )

        {

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

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

            {

            selIndex = variant.value<int>();  

            } 

        else 

            {

            return mWidget;

            }

        QVariant variantimage = mModel->data(mModel->index(selIndex,0),Qt::DecorationRole);

        if ( variantimage.isValid() &&  variantimage.canConvert<HbIcon> () )

            {

            QPolygonF poly;

            if (mModelWrapper && !mWidget->getItemOutline(mModelWrapper->index(selIndex,0), poly))

                {

                return mWidget;

                }

            QRectF itemRect = poly.boundingRect();

            mIconItem->setSize(QSize(120,120));

            HbIcon tempIcon =  variantimage.value<HbIcon>();

            QPixmap tempPixmap = tempIcon.qicon().pixmap(120, 120);

            QSize sz = QSize ( 120, 120);

            tempPixmap = tempPixmap.scaled(sz, Qt::IgnoreAspectRatio );

            HbIcon tmp = HbIcon( QIcon(tempPixmap)) ;

            mIconItem->setIcon(tmp);

            mIconItem->setPos(itemRect.topLeft());