/*

* Copyright (c) 2007 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:  Lock App internal state control

 *

*/

#include "lockappstatecontrol.h"

#include "lockappstatepublisher.h"

#include "lockappkeyguardcontrol.h"

#include "lockapputils.h"

#include "lockappecsdetector.h"

const TInt KLockAppObserverListGranularity = 4;

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

// Standard C++ constructor

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

CLockAppObserverList::CLockAppObserverList( )

    {

    // no implementation required

    }

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

// Destroys the observer list and all existing observers.

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

CLockAppObserverList::~CLockAppObserverList( )

    {

    if ( iObserverList )

        {

        TInt count = iObserverList->Count( );

        for (TInt index=0; index<count; index++ )

            {

            delete (*iObserverList)[index];

            }

        iObserverList->Reset( );

        delete iObserverList;

        }

    }

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

// Adds lock state observer to the observer list.

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

void CLockAppObserverList::AddObserverL( MLockAppStateObserver* aObserver )

    {

    if ( aObserver )

        {

        TBool found(EFalse);

        // check that the observer has not been added before

        TInt count = iObserverList->Count( );

        for ( TInt index=0; index<count; index++ )

            {

            if ( ((*iObserverList)[index]) == aObserver )

                {

                found = ETrue;

                }

            }

        if ( !found )

            {

            iObserverList->AppendL( aObserver );

            }

        }

    }

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

// Removes lock state observer from the observer list.

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

void CLockAppObserverList::RemoveObserver( MLockAppStateObserver* aObserver )

    {

    if ( aObserver )

        {

        TInt count = iObserverList->Count( );

        for ( TInt index=0; index<count; index++ )

            {

            if ( ((*iObserverList)[index]) == aObserver )

                {

                iObserverList->Remove( index );

                return;

                }

            }

        }

    }

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

// Constructs the observer list.

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

void CLockAppObserverList::BaseConstructL( )

    {

    // create observer list

    iObserverList = new (ELeave) RPointerArray<MLockAppStateObserver>(KLockAppObserverListGranularity);

    }

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

// Not implemented, meant for derived classes

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

void CLockAppObserverList::HandleLockStatusChangedL( TLockStatus /*aLockStatus*/)

    {

    }

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

// Informs observers that the lock state has changed.

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

void CLockAppObserverList::PostStatusChangeL( TLockStatus aStatusChange )

    {

    // first inform the main control

    HandleLockStatusChangedL( aStatusChange );

    // for child observers

    TInt count = iObserverList->Count( );

    for ( TInt index=count-1; index>=0; index-- )

        {

        //TRAP_IGNORE

        ((*iObserverList)[index])->HandleLockStatusChangedL( aStatusChange );

        }

    }