/*

* Copyright (c) 2002-2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*      Implementation of CBrowserCommsModel.

*

*

*/

// INCLUDE FILES

#include <ActiveApDb.h>

#include <ApUtils.h>

#include <ApSelect.h>

#include <ApListItemList.h>

#include <ApListItem.h>

#include <BrowserNG.rsg>

#include "BrowserCommsModel.h"

#include "BrowserDialogs.h"

#include "Browser.hrh"

// CONSTANTS

/// Granularity of observer list.

LOCAL_D const TInt KObserverListGranularity = 4;

// ================= MEMBER FUNCTIONS =======================

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

// CBrowserCommsModel::NewL

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

//

CBrowserCommsModel* CBrowserCommsModel::NewL()

    {

    CBrowserCommsModel* model = new (ELeave) CBrowserCommsModel();

    CleanupStack::PushL( model );

    model->ConstructL();

    CleanupStack::Pop();    // model

    return model;

    }

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

// CBrowserCommsModel::~CBrowserCommsModel

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

//

CBrowserCommsModel::~CBrowserCommsModel()

    {

    delete iObservers;

    if ( iDb )

        {

        iDb->RemoveObserver( this );

        }

    delete iCachedApList;

    delete iDb;

    }

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

// CBrowserCommsModel::CBrowserCommsModel

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

//

CBrowserCommsModel::CBrowserCommsModel(): iUpdatePending( EFalse )

    {

    }

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

// CBrowserCommsModel::ConstructL

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

//

void CBrowserCommsModel::ConstructL()

    {

    iDb = CActiveApDb::NewL( EDatabaseTypeIAP );

    iDb->AddObserverL( this );

    iCachedApList = new (ELeave) CApListItemList();

    iObservers = new (ELeave) CArrayPtrFlat<MCommsModelObserver>

                                                ( KObserverListGranularity );

    iDelayedRefresh = ETrue;

    //GetAccessPointsL();

    }

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

// CBrowserCommsModel::HandleApDbEventL

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

//

void CBrowserCommsModel::HandleApDbEventL

( MActiveApDbObserver::TEvent aEvent )

    {

    // We try to refresh AP list in two cases:

    // 1. Database changed;

    // 2. Database unlocked and we have a pending update (previous update was

    //    unsuccessful).

    if ( aEvent == MActiveApDbObserver::EDbChanged ||

         ( aEvent == MActiveApDbObserver::EDbAvailable && iUpdatePending ) )

            {

            // Try to refresh cached AP list.

            iDelayedRefresh = ETrue;

            //GetAccessPointsL();

            NotifyObserversL();

            }

    // MActiveApDbObserver::EDbClosing:

    // MActiveApDbObserver::EDbAvailable:

       // These events will never come. Commdb cannot be closed

        // with a notifier still on it. (It must be deleted to close.)

    }

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

// CBrowserCommsModel::ApDb

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

//

CActiveApDb& CBrowserCommsModel::ApDb() const

    {

    return *iDb;

    }

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

// CBrowserCommsModel::CommsDb

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

//

CCommsDatabase& CBrowserCommsModel::CommsDb() const

    {

    return *(iDb->Database());

    }

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

// CBrowserCommsModel::CopyAccessPointsL

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

//

CApListItemList* CBrowserCommsModel::CopyAccessPointsL()

    {

    if ( iDelayedRefresh )

    	{

    	GetAccessPointsL();

    	iDelayedRefresh = EFalse;

    	}

    CApListItemList* accessPoints = new (ELeave) CApListItemList();

    CleanupStack::PushL( accessPoints );

    CApListItem* ap;

    TInt i;

    TInt count = iCachedApList->Count();

    for ( i = 0; i < count; i++ )

        {

        ap = CApListItem::NewLC( iCachedApList->At( i ) );

        accessPoints->AppendL( ap );

        CleanupStack::Pop();    // ap; owner is now the list.

        }

    CleanupStack::Pop();    // accessPoints

    return accessPoints;

    }

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

// CBrowserCommsModel::AccessPoints

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

//

const CApListItemList* CBrowserCommsModel::AccessPointsL()

    {

    if ( iDelayedRefresh )

    	{

    	GetAccessPointsL();

    	iDelayedRefresh = EFalse;

    	}

    return iCachedApList;

    }

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

// CBrowserCommsModel::RefreshAccessPointsL

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

//

void CBrowserCommsModel::RefreshAccessPointsL()

    {

    iDelayedRefresh = ETrue;

    //GetAccessPointsL();

    }

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

// CBrowserCommsModel::AddObserverL

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

//

void CBrowserCommsModel::AddObserverL( MCommsModelObserver& aObserver )

    {

    iObservers->AppendL( &aObserver );

    }

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

// CBrowserCommsModel::RemoveObserver

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

//

void CBrowserCommsModel::RemoveObserver( MCommsModelObserver& aObserver )

    {

    TInt i;

    TInt count = iObservers->Count();

    for ( i = 0; i < count; i++ )

        {

        if ( iObservers->At( i ) == &aObserver )

            {

            iObservers->Delete( i );

            break;

            }

        }

    }

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

// CBrowserCommsModel::GetAccessPointsL

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

//

void CBrowserCommsModel::GetAccessPointsL()

    {

    CApListItemList* apList = new (ELeave) CApListItemList();

    CleanupStack::PushL( apList );

    TRAPD( err, DoGetAccessPointsL( *apList ) );

    switch ( err )

        {

        case KErrNone:

            {

            // Got new data.

            delete iCachedApList;

            CleanupStack::Pop();    // apList: now member.

            iCachedApList = apList;

            iUpdatePending = EFalse;

            //NotifyObserversL();

            break;

            }

        case KErrLocked:

        case KErrAccessDenied:

        case KErrPermissionDenied:

            {

            // Could not access database. Update now pending, old data remains.

            CleanupStack::PopAndDestroy();  // apList

            iUpdatePending = ETrue;

            break;

            }

        default:

            {

            // Other error. Propagate.

            User::Leave( err );

            break;

            }

        }

    }

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

// CBrowserCommsModel::DoGetAccessPointsL

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

//

void CBrowserCommsModel::DoGetAccessPointsL( CApListItemList& aList ) const

    {

    CApSelect* apSelect = CApSelect::NewLC

        (

        *(iDb->Database()),

        KEApIspTypeAll,

//        KEApIspTypeAll | KEApIspTypeWAPMandatory,

        EApBearerTypeAll,

        KEApSortNameAscending,

        );

    (void)apSelect->AllListItemDataL( aList );

    CleanupStack::PopAndDestroy();  // apSelect

    }

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

// CBrowserCommsModel::NotifyObserversL

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

//

void CBrowserCommsModel::NotifyObserversL()

    {

    if ( iObservers )

        {

        TInt i;

        TInt count = iObservers->Count();

        for ( i = 0; i < count; i++ )

            {

            iObservers->At( i )->HandleCommsModelChangeL();

            }

        }

    }

// End of File