/*

* 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: 

*

*/

#include "usbmainview.h"

#include <QModelIndex>

#include <QtGui/QGraphicsLinearLayout>

#include <hblistwidget.h>

#include <hblistwidgetitem.h>

#include <hbradiobuttonlist.h>

#include <hbtextedit.h>

#include "usbuisettingmodel.h"

#include "mydebug.h"

/*!

 * default constructor

 */

UsbMainView::UsbMainView( QObject *parent )

:   HbView(), mModel(NULL)

{

    myDebug() << ">>> UsbMainView::UsbMainView";

    setParent( parent );    

    setTitle( qtTrId("USB") ); 

    mMainLayout = new QGraphicsLinearLayout( Qt::Vertical, this );

    mModel = new UsbUiSettingModel();

    createMainView();

    setLayout( mMainLayout );

    myDebug() << "<<< UsbMainView::UsbMainView";      

}

/*!

 * creates the main view

 */

void UsbMainView::createMainView()

{

    myDebug() << ">>> UsbMainView::createMainView";

    QGraphicsLinearLayout *mainViewLayout = new QGraphicsLinearLayout( Qt::Vertical, mMainLayout );

    mListItem = NULL;

    mlist = NULL;

    mlabel = NULL;

    mradio = NULL;

    mIcon = NULL;

    createIconNameRow( mainViewLayout );

    createDescriptionArea( mainViewLayout );

    createRadioButtonArea( mainViewLayout );

    mMainLayout->addItem( mainViewLayout );

    bool connected = connect( mModel, SIGNAL( dataChanged( QModelIndex, QModelIndex ) ), 

            this, SLOT( updateSettingItems( QModelIndex, QModelIndex ) ) );

    myDebug() << "<<< UsbMainView::createMainView model connected=" << connected;

    connected = connect(mradio, SIGNAL( itemSelected( int ) ), 

            this, SLOT( setPersonality( int ) ) );

    myDebug() << "<<< UsbMainView::createMainView mradio connected=" << connected;

    myDebug() << "<<< UsbMainView::createMainView";

}  

/*!

 * creating the creates the first row in the view containing an icon and a mode name 

 */

void UsbMainView::createIconNameRow( QGraphicsLinearLayout *aLocalPropertiesGroup )

{

    myDebug() << ">>> UsbMainView::createIconNameRow";

    QGraphicsLinearLayout *listLayout = new QGraphicsLinearLayout( Qt::Vertical, mMainLayout );

    mlist = new HbListWidget( this );

    mlist->setMaximumSize( 300, 50 ); //todo

    mListItem= new HbListWidgetItem();

    QModelIndex index = mModel->index( UsbUiSettingModel::DefaultMode, KDefaultColumn );

  //  QVariant iconName = mModel->data( index, Qt::DecorationRole );

    mIcon = new HbIcon( mModel->data( index, Qt::DecorationRole ).toString() );

    mListItem->setDecorationIcon( *mIcon );

    mListItem->setText( mModel->data( index,Qt::DisplayRole ).toString() );

    mListItem->setText( mModel->data( index,Qt::DisplayRole ).toString() );        

    mlist->insertItem( 1, mListItem ); 

    listLayout->addItem( mlist );

    aLocalPropertiesGroup->addItem( listLayout );

    myDebug() << "<<< UsbMainView::createIconNameRow";      

}

/*!

 * creates the second row from the view containing the description of the selected mode

 */

void UsbMainView::createDescriptionArea( QGraphicsLinearLayout *aLocalPropertiesGroup )

{ 

    myDebug() << ">>> UsbMainView::createDescriptionArea";

    QGraphicsLinearLayout *desLayout = new QGraphicsLinearLayout( Qt::Vertical, mMainLayout ); 

    QModelIndex index = mModel->index( UsbUiSettingModel::Description, KDefaultColumn );

    mlabel = new HbTextEdit( mModel->data( index, Qt::DisplayRole ).toString() );

    mlabel->setReadOnly( true );

    mlabel->setCursorVisibility( Hb::TextCursorHidden );

    desLayout->addItem( mlabel );

    desLayout->setAlignment( mlabel, Qt::AlignTop );

    aLocalPropertiesGroup->addItem( desLayout );

    myDebug() << "<<< UsbMainView::createDescriptionArea";      

}

/*!

 * creates the third row from the view containing the radio button list of the existing usb modes

 */

void UsbMainView::createRadioButtonArea(QGraphicsLinearLayout *aLocalPropertiesGroup)

{

    myDebug() << ">>> UsbMainView::createRadioButtonArea";

    QGraphicsLinearLayout *radioLayout = new QGraphicsLinearLayout( Qt::Vertical, mMainLayout ); 

    QModelIndex index = mModel->index( UsbUiSettingModel::UsbModeList, KDefaultColumn );

    QStringList radioList = mModel->data( index, UsbUiSettingModel::SettingsModeNameList ).toStringList();

    int selectedIndex = mModel->data( index, Qt::EditRole ).toInt();

    mradio = new HbRadioButtonList( radioList, selectedIndex );

    radioLayout->addItem( mradio );

    radioLayout->setAlignment( mradio, Qt::AlignBottom );

    aLocalPropertiesGroup->addItem(radioLayout); 

    myDebug() << "<<< UsbMainView::createRadioButtonArea";      

}

/*!

    Slot for receiving notification of data changes from the model.

    Identify the setting changed and update the corresponding UI item.

 */

void UsbMainView::updateSettingItems(const QModelIndex &topLeft, const QModelIndex &bottomRight)

{   

    myDebug() << ">>> UsbMainView::updateSettingItems";

    // update only the part of the view specified by the model row(s)

    for ( int row = topLeft.row(); row <= bottomRight.row(); row++ ) {

        myDebug() << "    UsbMainView::updateSettingItems row=" << row;

        QModelIndex index = mModel->index( row, KDefaultColumn );

        // Distinguish which setting value is changed.

        switch ( row ) {

        case UsbUiSettingModel::DefaultMode :

            // set the selected personality icon and name

            mIcon->setIconName( mModel->data( index, Qt::DecorationRole ).toString() );

            mListItem->setDecorationIcon( *mIcon );

            mListItem->setText( mModel->data( index,Qt::DisplayRole ).toString() );            

            break;

        case UsbUiSettingModel::Description :

            // set the description of the selected personality.

            mlabel->setPlainText( mModel->data( index, Qt::DisplayRole ).toString() );

            mlabel->setReadOnly( true );

            mlabel->setCursorVisibility( Hb::TextCursorHidden );            

            break;

        case UsbUiSettingModel::UsbModeList :

            // only the selection can change, no changes in the list of personalities

            mradio->setSelected( mModel->data( index, Qt::EditRole ).toInt() );

            break;

        default :

            myDebug() << "    UsbMainView::updateSettingItems unknown row " << row;

            break;

        }

    }

    myDebug() << "<<< UsbMainView::updateSettingItems";

}

/*

 * Slot for receiving notification from the change in radio button list

 */

void UsbMainView::setPersonality( int personalityIndex )

{

    myDebug() << ">>> UsbMainView::setPersonality";

    QModelIndex index = mModel->index( UsbUiSettingModel::UsbModeList, KDefaultColumn );

    mModel->setData( index, personalityIndex, Qt::EditRole );

    myDebug() << "<<< UsbMainView::setPersonality";

}

/*!

 * Destructor

 * destructs the items which are not owned by this class

 */

UsbMainView::~UsbMainView()

{ 

    myDebug() << ">>> UsbMainView::~UsbMainView";

    delete mModel;

    delete mIcon;

    myDebug() << "<<< UsbMainView::~UsbMainView";   

}