/*

* Copyright (c) 2001 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:  Implementation of classes derived from MAknWsEventObserver  

*  Support for the observation of events prior to their normal handling in the the

*  App Ui.

*

*

*/

// INCLUDES

#include "AknWsEventObserver.h"

// LOCAL FUNCTIONS

GLDEF_C void Panic(TAknWsEventObserverPanic aPanic)

	{

	_LIT(KPanicCat,"Avkon Ws Event Observer");

	User::Panic(KPanicCat, aPanic);

	}

// IMPLEMENTATIONS

CAknWsEventMonitor* CAknWsEventMonitor::NewL()

	{

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

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop();

	return self;

	}

CAknWsEventMonitor::~CAknWsEventMonitor()

	{

	if (iEventObservers)

	    iEventObservers->Close();

	delete iEventObservers;

	}

void CAknWsEventMonitor::ConstructL()

	{

	iEventObservers = new (ELeave) RPointerArray<MAknWsEventObserver>(4);

	}

EXPORT_C void CAknWsEventMonitor::AddObserverL( MAknWsEventObserver* aEventObserver)

	{

    TInt index = iEventObservers->Find(aEventObserver);

    if (index == KErrNotFound)

        {

        iEventObservers->AppendL(aEventObserver);

        }

	}

EXPORT_C void CAknWsEventMonitor::RemoveObserver(const MAknWsEventObserver* aEventObserver)

	{

	// Remove the pointer, as the object may want to disappear...

    TInt index = iEventObservers->Find(aEventObserver);

    if (index != KErrNotFound)

        {

        iEventObservers->Remove(index);

        }

	}

EXPORT_C void CAknWsEventMonitor::HandleWsEventL(const TWsEvent& aEvent, CCoeControl* aDestination )

    {

    // make a quickshot for current Observers.

    TInt count = iEventObservers->Count();

    if ( count == 0 )

        {

        return;

        }

    // not own

    RArray<MAknWsEventObserver*> snapShot( 4 );

    CleanupClosePushL( snapShot );

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

        {

        snapShot.AppendL( (*iEventObservers)[i] );

        }

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

        {

        MAknWsEventObserver* eventObserver = snapShot[i];

        if ( eventObserver && iEventObservers->Find( eventObserver ) != KErrNotFound )

            {

            eventObserver->HandleWsEventL(aEvent, aDestination);

            }

        }

    CleanupStack::PopAndDestroy(); // CleanupClosePushL( quichShort );

    }

EXPORT_C void CAknWsEventMonitor::Enable(TBool aEnable)

    {

    iEnabled = aEnable;

    }

TBool CAknWsEventMonitor::IsEnabled()

    {

    return iEnabled;

    }

EXPORT_C void CAknWsEventMonitor::Reserved_1()

	{

	}