/*

* Copyright (c) 2008 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:  Gesture helper implementation

*

*/

#include "gesturehelpereventsender.h"

#include "gesture.h"

using namespace RT_GestureHelper;

const TInt KEventsQueueGranularity = 4;

CGestureEventSender* CGestureEventSender::NewL( MGestureObserver& aObserver )

    {

    CGestureEventSender* self = new (ELeave) CGestureEventSender(aObserver);

    return self;

    }

CGestureEventSender::CGestureEventSender( MGestureObserver& aObserver ) : 

                                          CActive(EPriorityUserInput - 1),

                                          iObserver(aObserver), iEvents(KEventsQueueGranularity)

    { 

    CActiveScheduler::Add(this);

    }

CGestureEventSender::~CGestureEventSender()

    {

    if (IsActive()) 

        {

        Cancel();

        }

    iEvents.Close();

    }

TInt CGestureEventSender::AddEvent(const TGestureEvent& aGestureEvent)

    {

    iEvents.Append(aGestureEvent);

    if (iState != EBusy)

        {

        iState = EEventsReady;

        }

    if (!IsActive()) 

        {

        Complete();

        }

    return iEvents.Count();

    }

void CGestureEventSender::Complete()

    {

    TRequestStatus* status = &iStatus;

    User::RequestComplete(status, KErrNone);

    SetActive();

    }

void CGestureEventSender::RunL()

    {

    switch (iState)

        {

        case EEventsReady:

            {

            if (iEvents.Count() > 0)

                {

                TInt count = iEvents.Count();

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

                    {

                    TGestureEvent& gst = iEvents[i];

                    EmitEventL(gst);

                    }

                }

            iEvents.Reset();

            iState = ENoEvents;

            Complete();

            break;

            }

        }

    }

void CGestureEventSender::EmitEventL( const TGestureEvent& aGesture )

    {

    iState = EBusy;

    iObserver.HandleGestureL(aGesture);

    iState = EEventsReady;

    }

TInt CGestureEventSender::RunError(TInt aError)

    {

    iEvents.Reset();

    return aError;

    }

void CGestureEventSender::DoCancel()

    {

    iEvents.Reset();

    iState = ENoEvents;

    }