/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbCore module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include "hbindicatorsym_p.h"

#include "hbdevicedialogerrors_p.h"

#include <QVariant>

#include <QPointer>

#include <e32base.h>

#include <hbdevicedialogserverdefs_p.h>

#include <hbdevicedialogtrace_p.h>

class CAsyncListener : public CActive

{

public:

    CAsyncListener(HbIndicatorPrivate *indicator) : CActive(EPriorityStandard), iIndicator(indicator) 

    {

        CActiveScheduler::Add(this);

    }

    TInt Start() 

    {

        TInt error = KErrNone;

        if (!IsActive()) {

            iStatus = KRequestPending;

            error = iIndicator->mHbSession.Connect(&iStatus);

            if (error == KErrNone) {

                SetActive();

            }

        }

        return error;

    }

    void RunL() {

        if (iStatus == KErrNone) {

            iIndicator->Start();

        }

    }

    void DoCancel()

    {

        TRequestStatus *rs = &iStatus;

        User::RequestComplete(rs, KErrNone);

    }

private:

    HbIndicatorPrivate *iIndicator;

};

/*!

    \class HbIndicatorPrivate

    \internal

*/

/*!

    \internal

*/

HbIndicatorPrivate::HbIndicatorPrivate()

: CActive( EPriorityStandard ),

  iInitialized(EFalse),

  iRequesting(EFalse),

  iMsgTypePtr(NULL,0,0),

  iBuffer(0),

  iDataPtr(NULL,0,0),

  iLastError(HbDeviceDialogNoError),

  iAsyncListener(0)

{

    TRACE_ENTRY

    TRACE_EXIT

}

/*!

    \internal

*/

HbIndicatorPrivate::~HbIndicatorPrivate()

{

    TRACE_ENTRY

    stopListen();

    delete iBuffer;

    if (iAsyncListener) {

        iAsyncListener->Cancel();

        delete iAsyncListener;

    }

    TRACE_EXIT

}

/*!

    \internal

    Initialisation step.

*/

void HbIndicatorPrivate::init()

{

    TRACE_ENTRY

    iLastError = HbDeviceDialogNoError;

    CActiveScheduler::Add( this );

    TRACE_EXIT

}

/*!

    \internal

    Initialisation step. Session to server is created.

*/

void HbIndicatorPrivate::initializeL(bool forListening)

{

    TRACE_ENTRY

    TInt error = KErrNone;

    if (forListening) {

        if (!iAsyncListener) {

            iAsyncListener = new (ELeave) CAsyncListener(this);

        }

        error = iAsyncListener->Start();

    } else {

        error = mHbSession.Connect();

    }

        TRACE("initialize error: " << error);

        setError( HbDeviceDialogConnectError );

        User::LeaveIfError( error );

    }

    else if (forListening){

        iBuffer = HBufC8::NewL( 256 );

        iDataPtr.Set( iBuffer->Des() );

        iDataPtr.Zero();

    }

    iInitialized = ETrue;

    TRACE_EXIT

}

bool HbIndicatorPrivate::activate(const QString &indicatorType, const QVariant &parameter)

{

    TRACE_ENTRY

    return sendActivateMessage(indicatorType, ETrue, parameter);

}

bool HbIndicatorPrivate::deactivate(const QString &indicatorType, const QVariant &parameter)

{

    TRACE_ENTRY

    return sendActivateMessage(indicatorType, EFalse, parameter);

}

bool HbIndicatorPrivate::startListen()

{

    TRACE_ENTRY

    if (!iInitialized) {

        TRAPD( error, initializeL(true) );

        if ( error != KErrNone ){

            setError( HbDeviceDialogConnectError );

            TRACE_EXIT_ARGS("error " << error)

            return false;

        }

    }

    TRACE_EXIT

    return true;

}

bool HbIndicatorPrivate::listening() const

{

    return iRequesting;

}

bool HbIndicatorPrivate::stopListen()

{

    TRACE_ENTRY

    //close connections to server.

    bool ok = false;

    if (iRequesting) {

        Close();

    }

    if (iInitialized) {

        mHbSession.Close();

        iInitialized = EFalse;

    }

    Cancel();

    ok = ETrue;

    TRACE_EXIT

    return ok;

}

/*!

    \internal

    Set and notify error status.

*/

void HbIndicatorPrivate::setError( int error )

{

    TRACE_ENTRY_ARGS("error " << error)

    iLastError = error;

    emit this->error(iLastError);

    TRACE_EXIT

}

/*!

    \internal

    Return last error.

*/

int HbIndicatorPrivate::error() const

{

    TRACE_ENTRY

    return iLastError;

}

/*!

    \internal

    RunL from CActive.

*/

void HbIndicatorPrivate::RunL()

    {

    TRACE_ENTRY

    iLastError = HbDeviceDialogNoError;

    TInt status = iStatus.Int();

    iRequesting = EFalse;

        QByteArray resArray( (const char*) iDataPtr.Ptr(), iDataPtr.Size() );

        QDataStream stream( &resArray, QIODevice::ReadOnly);

        QList<IndicatorClientInfo> activatedList;

        QList<IndicatorClientInfo> updatedList;

        QList<IndicatorClientInfo> deactivatedList;

        quint16 count = 0;

        stream >> count;

        IndicatorClientInfo clientInfo;

        int state = 0;

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

            stream >> state;

            stream >> clientInfo;

            switch(state) {

            case IndicatorUpdated:

                updatedList.append(clientInfo);

                break;

            case IndicatorActivated:

                activatedList.append(clientInfo);

                break;

            case IndicatorDeactivated:

                deactivatedList.append(clientInfo);

                break;

            default:

                break;

            }

        }

        if (iMsgType == EHbIndicatorAllActivated) {

            iActivatedBuffer += activatedList;

            activatedList.clear();

            if (status == 0 && !iActivatedBuffer.isEmpty()) {

                emit allActivated(iActivatedBuffer);

                iActivatedBuffer.clear();

            }

        }

        if (!activatedList.isEmpty()) {

            emit activated(activatedList);

        }

        if (!deactivatedList.isEmpty()) {

            emit deactivated(deactivatedList);

        }

        if (!updatedList.isEmpty()) {

            emit updated(updatedList);

        }

        if ( status > 0 && iBuffer->Size() < status ) {

            // Resize buffer.

            delete iBuffer;

            iBuffer = NULL;

            iBuffer = HBufC8::NewL( status );

            iDataPtr.Set( iBuffer->Des() );

        }

    } else {

        setError(status);

    }

        Continue();

    }

    TRACE_EXIT

}

/*!

    \internal

    DoCancel from CActive.

*/

void HbIndicatorPrivate::DoCancel()

{

    TRACE_ENTRY

    TRACE_EXIT

}

/*!

    \internal

    RunError from CActive.

*/

TInt HbIndicatorPrivate::RunError( TInt /*aError*/ )

{

    TRACE_ENTRY

    setError( HbDeviceDialogGeneralError );

    TRACE_EXIT

    return KErrNone;

}

/*!

    \internal

    Starts asynchronous message to receive update and close events from session.

*/

void HbIndicatorPrivate::Start()

{

    TRACE_ENTRY

    if ( !iRequesting && iInitialized && !IsActive() ) {

        TPckg<TInt> pckg( iMsgType );

        iMsgTypePtr.Set( pckg ); //iMsgTypePtr is ignored in server side.

        mHbSession.SendASyncRequest( EHbSrvGetActivatedIndicatorsStart,

                iDataPtr, iMsgTypePtr, iStatus );

        SetActive();

        iRequesting = ETrue;

    }

    TRACE_EXIT

}

void HbIndicatorPrivate::Continue()

{

    TRACE_ENTRY

    if ( !iRequesting && iInitialized && !IsActive() ) {

        TPckg<TInt> pckg( iMsgType );

        iMsgTypePtr.Set( pckg );

        mHbSession.SendASyncRequest( EHbSrvGetActivatedIndicatorContinue,

                iDataPtr, iMsgTypePtr, iStatus );

        SetActive();

        iRequesting = ETrue;

    }

    TRACE_EXIT

}

void HbIndicatorPrivate::Close()

{

    TRACE_ENTRY

    if (iRequesting) {

        TRACE("Send close message")

        mHbSession.SendSyncRequest(EhbSrvGetActivatedIndicatorsClose);

        iRequesting = EFalse;

    }

    TRACE_EXIT

}

int HbIndicatorPrivate::sendActivateMessage(const QString &indicatorType,

        TBool activate, const QVariant& parameter)

{

    TRACE_ENTRY

    iLastError = HbDeviceDialogNoError;

    if (!iInitialized) {

        if ( error != KErrNone ){

            setError( HbDeviceDialogConnectError );

            TRACE_EXIT_ARGS("error " << error)

            return false;

        }

    }

    QByteArray array;

    QDataStream stream( &array, QIODevice::WriteOnly );

    stream << indicatorType;

    stream << parameter;

    TPtrC8 ptr( reinterpret_cast<TUint8*>(array.data()), array.size() );

    // Synchronic call to server to activate or deactivate indicator

    int message = EHbSrvActivateIndicator;

    if (!activate) {

        message = EHbSrvDeactivateIndicator;

    }

    int error = mHbSession.SendSyncRequest( message, ptr );

    bool result(true);

    if ( error != KErrNone ) {

        setError( error );

        result = false;

    }

    TRACE_EXIT

    return result;

}