/*

* 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 <QObject>

#include <QDateTime>

#include <QVariantHash>

#include <xqconversions.h>

#include "tsservice.h"

#include "tsmodelobserver.h"

#include "tsserviceobserver.h"

// -----------------------------------------------------------------------------

LOCAL_C QVariantHash valueL( QObject *aModel, TInt aOffset )

    {

    QList<QVariantHash> items;

    QMetaObject::invokeMethod( aModel, 

                               "taskList", 

                               Q_RETURN_ARG(QList<QVariantHash>, 

                               items ) );

    if( aOffset >= items.count() ) 

        {

        User::Leave(KErrCorrupt);

        }

    return items.at(aOffset);

    }

// -----------------------------------------------------------------------------

CTsService* CTsService::NewLC(QObject* model)

    {

    CTsService *self = new (ELeave)CTsService();

    CleanupStack::PushL(self);

    self->ConstructL(model);

    return self;

    }

// -----------------------------------------------------------------------------

CTsService::CTsService()

    {

    //No implementation required

    }

// -----------------------------------------------------------------------------

void CTsService::ConstructL( QObject* model )

    {

    iModel = model;

    User::LeaveIfNull(iModel);

    // @todo: add checking for all necessary methods

    iServiceObserver = new TsServiceObserver(*this);

    User::LeaveIfNull(iServiceObserver);

    QObject::connect(iModel, 

                     SIGNAL(dataChanged()),

                     iServiceObserver,

                     SLOT(dataChanged()));

    }

// -----------------------------------------------------------------------------

CTsService::~CTsService()

    {

    delete iModel;

    delete iServiceObserver;

    delete iBuffer;

    }

// -----------------------------------------------------------------------------

void CTsService::DataChanged()

    {

    if(0 != iModelObserver) 

        {

        iModelObserver->DataChanged(*this);

        }

    }

// -----------------------------------------------------------------------------

TInt CTsService::Count() const

    {

    QList<QVariantHash> items;

    QMetaObject::invokeMethod(iModel, 

                              "taskList", 

                              Q_RETURN_ARG(QList<QVariantHash>, items));

    return items.count();

    }

// -----------------------------------------------------------------------------

void CTsService::SetObserver( MTsModelObserver *aObserver )

    {

    iModelObserver = aObserver;

    }

// -----------------------------------------------------------------------------

const TDesC& CTsService::DisplayNameL( TInt aOffset ) const

    {

    return StringValueL( aOffset, "TaskName" );

    }

// -----------------------------------------------------------------------------

TInt CTsService::IconHandleL( TInt aOffset ) const

    {

    return IntValueL( aOffset, "TaskScreenshot" );

    }

// -----------------------------------------------------------------------------

TTime CTsService::TimestampL( TInt aOffset ) const

    {

    return TimeValueL( aOffset, "TaskTimestamp" );

    }

// -----------------------------------------------------------------------------

TTime CTsService::TimestampUpdateL(TInt offset) const

{

    return TimeValueL(offset, "TaskUpdateTimestamp");

}

TTsModelItemKey CTsService::KeyL( TInt aOffset ) const

    {

    return TTsModelItemKey( IntValueL( aOffset, "TaskId" ), 

                            reinterpret_cast<TInt>( this ) );

    }

// -----------------------------------------------------------------------------

TBool CTsService::IsActiveL( TInt aOffset ) const

    {

    return IntValueL( aOffset, "TaskIsRunning" );

    }

// -----------------------------------------------------------------------------

TBool CTsService::IsClosableL( TInt aOffset ) const

    {

    return IntValueL( aOffset, "TaskCanBeClosed" );

    }

// -----------------------------------------------------------------------------

TBool CTsService::CloseL( TTsModelItemKey aKey ) const

    {

    bool result(false);

    QMetaObject::invokeMethod( iModel, 

                               "closeTask", 

                               Q_RETURN_ARG(bool, result), 

                               Q_ARG(QVariant, aKey.Key() ) );

    return result;

    }

// -----------------------------------------------------------------------------

TBool CTsService::LaunchL( TTsModelItemKey aKey ) const

    {

    bool result(false);

    QMetaObject::invokeMethod( iModel, 

                               "openTask", 

                               Q_RETURN_ARG(bool, result), 

                               Q_ARG(QVariant, aKey.Key() ) );

    return result;

    }

// -----------------------------------------------------------------------------

TInt CTsService::IntValueL( TInt aOffset, const char* aKey) const

    {

    return valueL(iModel, aOffset).value( aKey ).toInt();

    }

// -----------------------------------------------------------------------------

TTime CTsService::TimeValueL(TInt aOffset, const char* aKey) const

    {

    // Conversion between TTime which counts from year 0, and QDateTime which uses unix epoch (1st Jan 1970)

    QDateTime timestamp = valueL( iModel, aOffset ).value( aKey ).toDateTime();

    return TTime( _L( "19700000:" ) ) + TTimeIntervalSeconds( timestamp.toTime_t() ) +

                         TTimeIntervalMicroSeconds( timestamp.time().msec() * 1000 );

    }

// -----------------------------------------------------------------------------

const TDesC& CTsService::StringValueL( TInt aOffset, const char* aKey ) const

    {

    delete iBuffer;

    const_cast<CTsService *>(this)->iBuffer = 0;

    const QVariantHash item(valueL(iModel, aOffset));

    QT_TRYCATCH_LEAVING(

    const_cast<CTsService *>(this)->iBuffer = 

    XQConversions::qStringToS60Desc(item.value(aKey).toString()));

    return *iBuffer;

    }