/*

* 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:  Stray PointerUp Event Filter.

*

*/

#include <osn/osnnew.h>

#include <alf/alfevent.h>

#include <alf/alfenv.h>

#include <alf/alfwidgetevents.h>

#include <alf/ialfscrollbarmodel.h>

#include <alf/alfwidgetcontrol.h>

#include "alfwidgetcontroleventfilter.h"

enum EventfilterEvent

    {

    EEventStrayPointerUp=57423

    };

//namespace Alf

namespace Alf

{

AlfWidgetControlEventFilter::AlfWidgetControlEventFilter()

	{

	mButtonDown = false;

	}

AlfWidgetControlEventFilter::~AlfWidgetControlEventFilter()

	{

	}

IAlfWidgetEventHandler::AlfEventHandlerType AlfWidgetControlEventFilter

    ::eventHandlerType()

    {

    return IAlfWidgetEventHandler::ELogicalEventHandler;

    }

IAlfWidgetEventHandler::AlfEventHandlerExecutionPhase AlfWidgetControlEventFilter

    ::eventExecutionPhase()

    {

    return IAlfWidgetEventHandler::ETunnellingPhaseEventHandler;

    }

bool AlfWidgetControlEventFilter::accept( 

                            CAlfWidgetControl& /*aControl*/, 

                            const TAlfEvent& /*aEvent */) const

	{	

    return false;

	}

AlfEventStatus AlfWidgetControlEventFilter::offerEvent(

                     CAlfWidgetControl& aControl, 

                     const TAlfEvent& aEvent )

	{

	if(aEvent.IsPointerEvent())

        {

        if (aEvent.PointerEvent().iType == TPointerEvent::EButton1Down)

            {

            // Recieved PointerDown

            mButtonDown = true;

            }

        else if (aEvent.PointerUp())

            {

            if(!mButtonDown)

                {

                // Recieved a stray pointerUp 

                aControl.Env().Send(TAlfCustomEventCommand(EEventStrayPointerUp));

                }

            mButtonDown = false;

            }

        }

    else if(aEvent.IsCustomEvent())

        {

        if(aEvent.CustomParameter() == EEventStrayPointerUp)

            {

            if(mButtonDown)

                {

                mButtonDown = false;

                TAlfEvent customevent(EEventMissedPointerUp);

                aControl.handleEvent(customevent);

                }

            }

        }

	return EEventNotHandled;

	}

void AlfWidgetControlEventFilter::setActiveStates( unsigned int /*aStates*/ )

	{

	}

IAlfInterfaceBase* AlfWidgetControlEventFilter::makeInterface ( const IfId& /*aType*/ )

	{

	return NULL;

	}

}// namespace Alf