/*

* Copyright (c) 2005-2006 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 for peninput server session class

*

*/

//INCLUDE FILES

#include <e32svr.h>

#include "peninputcmd.h"

#include "peninputclientserver.h"

#include "peninputanimcommand.h"

#include "peninputserver.h"

#include "peninputserversession.h"

const TInt KAllEventIndex = -1;

const TInt KFirstEventIndex = 0;

const TInt KMaxEventBuf = 50;

// ======== MEMBER FUNCTIONS ========

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

// CPeninputServerSession::CPeninputServerSession

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

//

CPeninputServerSession::CPeninputServerSession( RThread &aClient, 

                            CPeninputServer& aServer)

	                        : iPenInputSvr( aServer ),

    	                      iObserverActive(EFalse),

    	                      iCombinedMsgNum(0),

    	                      iCombinedEventId(ESignalKeyEvent),

    	                      iAppInfoType(EAppIndicatorMsg),

    	                      iDisabledUiType(0)

    {

    iPenInputSvr.IncreaseSessionCount();

    iClientId = aClient.Id();

    RProcess process;

    if ( KErrNone == aClient.Process(  process ) )

        {

        iClientProcess = process.Id();   

        process.Close();

        }

    }

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

// CPeninputServerSession::ConstructL

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

//

void CPeninputServerSession::ConstructL()

    {

    iAppInfo = KNullDesC().AllocL();

    iCombinedEventBuf.CreateMaxL(KMaxEventBuf);

    iCombinedEventBuf.Zero();    

    }

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

// CPeninputServerSession::NewL

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

//

CPeninputServerSession* CPeninputServerSession::NewL( RThread &aClient, 

                            						CPeninputServer& aServer)

    {

    CPeninputServerSession* session = new(ELeave) CPeninputServerSession(

                                           aClient, aServer);

    CleanupStack::PushL(session);

    session->ConstructL();

    CleanupStack::Pop(session);

    return session;

    }

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

// CPeninputServerSession::ServiceL

// Possible leave is handled by the CPeninputServer::RunError

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

//

void CPeninputServerSession::ServiceL( const RMessage2& aMessage )

    {

    switch ( aMessage.Function() )

        {

        case EPeninputServerRequestMessageNotification:

            // asynchnorous observation request issued, store it

            // a client can have only one observation request at a time

            if(!iObserverActive)

                {

                iPendingRequest = aMessage;

                iObserverActive = ETrue;

                //if already some events buffered,send the event

                if(iDataBuf.Count())

                    {

                    iPendingRequest.Complete(iSignalCodeArray[0]);                

                    iObserverActive = EFalse;

                    }

                }

            else

                {

                // cancel this request because notify request has already been issued

                aMessage.Complete(KErrCancel);

                }

            break;

        case EPeninputServerCancelMessageNotification:

            {

            aMessage.Complete(KErrNone);  

            if(iObserverActive)

                {

                iPendingRequest.Complete(KErrCancel);

                iObserverActive = EFalse;

                }

            ProcessPendingEventBeforeExit();

            //iSemaphore.Signal();            

            }

            break;

        default:

            {

            //TRAPD(err, DoServiceL(aMessage));

            //if(KErrNone != err)

            //    aMessage.Complete(err);

            TInt ret = DoServiceL(aMessage);

            //aMessage.Complete(ret);

            }

        }

    }

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

// CPeninputServerSession::GetDisabledLayouts

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

//

const TProcessId& CPeninputServerSession::ClientProcessId( )

    {

    return iClientProcess ;

    }

TInt CPeninputServerSession::BuildEventData()

    {

    if(iCombinedMsgNum > 0)     //the previous combined msg was not sent yet. No need to do again

        return iCombinedMsgNum;    

    TInt n = 0;

    //check how many signal can be combined

    while( n < iSignalCodeArray.Count() && iSignalCodeArray[n] == iCombinedEventId)

         ++n;

    if(n <= 0)

        return 0;

    iCombinedMsgNum = 0;

    for(; iCombinedMsgNum < n ; ++iCombinedMsgNum)

        {

        //check memory fist

        if(iCombinedEventBuf.MaxLength() < iCombinedEventBuf.Length() + iDataBuf[iCombinedMsgNum]->Length()) 

            {

            TInt err = iCombinedEventBuf.ReAlloc( KMaxEventBuf + 

                                      iCombinedEventBuf.Length() + 

                                      iDataBuf[iCombinedMsgNum]->Length());

            if(err != KErrNone)

                {

                break;

                }

            }

        //copy data

        iCombinedEventBuf.Append(*(iDataBuf[iCombinedMsgNum]));        

        }

    return iCombinedMsgNum;

    }

void CPeninputServerSession::RemoveEventDatas(TInt aNum)

    {

    aNum = aNum > 0 ? aNum : 1;

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

        RemoveEventDataByIdx(KFirstEventIndex); 

    iCombinedEventBuf.Zero();

    iCombinedMsgNum = 0;

    }

TInt CPeninputServerSession::SendEventData(const RMessage2& aMessage, const TDesC& aData)

    {

    TInt ret = KErrNone;

    TInt maxBufLen = aMessage.Int0();    

    if(maxBufLen >= aData.Length())

        {

        TRAP_IGNORE(aMessage.WriteL(1,aData));

        //remove the data

        RemoveEventDatas(iCombinedMsgNum > 0 ? iCombinedMsgNum : 1);

        }

    else

        {

        ret = aData.Length();

        }

    return ret;    

    }

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

// CPeninputServerSession::DoServiceL

// Possible leave is handled by the CPeninputServer::RunError

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

//

TInt CPeninputServerSession::DoServiceL( const RMessage2& aMessage )

    {

    //TInt err = KErrNone;

    TInt ret = KErrNone;

    switch ( aMessage.Function() )

        {            

        case EPeninputRequestUiNotificationCompleted:

            {

            RemoveEventDataByIdx(KFirstEventIndex);

            iPenInputSvr.ExecutePendingAnimCmd();

            }

            break;

        case EPeninputServerClearServerEvent:

            {

            RemoveEventDataByIdx(KAllEventIndex);

            }

            break;

        case EPeninputRequestGetServerEventData:

            {

            if(iDataBuf.Count())

                {                

                TInt combinedEventNum = BuildEventData();

                if(combinedEventNum)

                    ret = SendEventData(aMessage,iCombinedEventBuf);

                else

                    ret = SendEventData(aMessage,*iDataBuf[KFirstEventIndex]);

//                if(ret == KErrNone)

  //                  RemoveEventDatas(combinedEventNum);

                }

            else

                {

                aMessage.WriteL(1,KNullDesC);

                }

            }

            break;        

        case EPeninputRequestGetServerEventDataNumber:

            {

            TInt num = iDataBuf.Count();

            TPckgC<TInt> msg(num);

            aMessage.WriteL(0,msg);

            }

            break;

        case EPeninputRequestGetDisableLayout:

            {

            //TInt layoyts = 0;

            //CPeninputServerSession* pSession = static_cast<CPeninputServerSession*>(aMessage.Session());

            //GetProcessLayouts( pSession->ClientProcessId(), layoyts );

            TInt dsaDisableUIType = iPenInputSvr.DisabledByDSA();

            TInt orientationDisableType = iPenInputSvr.DisabledByOrientation();

            if( dsaDisableUIType )

            	{

            	iDsaEverHappened = ETrue;

            	}

            TPckg<TInt> msg(iDisabledUiType | dsaDisableUIType | orientationDisableType);

            aMessage.WriteL(0,msg);            

            }

            break;            

        case EPeninputRequestDisableLayout:

            {

            TInt layouts  = aMessage.Int0(); 

            //CPeninputServerSession* pSession = static_cast<CPeninputServerSession*>(aMessage.Session());

            //SetProcessLayouts( pSession->ClientProcessId(), layouts );

            if(layouts < 0 )

                {

                iDisabledUiType = 0; //reset.

                }

            else

                {

                iDisabledUiType |= layouts;

                }

            }

            break;

        case EPeninputRequestUiIsVisible:

        case EPeninputServerRequestSetDisplayMode:

        case EPeninputRequestUiEditorMaxLength:

        case EPeninputRequestUiSetUiPos:        

        case EPeninputRequestUiGetUiPos:        

        case EPeninputRequestUiSendAppEditorText:        

        case EPeninputRequestActivateLayout:  

        case EPeninputRequestActivateLayoutInGlobalNotes:

        case EPeninputRequestDimLayout:

        case EPeninputRequestSetUiLayoutId:

        case EPeninputRequestSetUiLayoutIdWithData:

        case EPeninputRequestResourceChanged:

        case EPenInputRequestGetImePluginIdList:

        case EPenInputRequestGetPenSupportLanguages:

        case EPeninputRequestIsForeground:

        case EPeninputRequestSetForeground:

        case EPeninputRequestRelinquishForeground:

        case EPeninputRequestAddUiObserver:

        case EPeninputRequestIsLayoutDimmed:

        //case EPeninputRequestChangeUiObserverType:

        case EPeninputRequestRemoveUiObserver:            

        //case EPeninputRequestDisableLayout:   

        case EPeninputRequestServerThreadId:

        //case EPeninputRequestGetDisableLayout:

        case EPeninputBackgroudDefaultOri:

        case EPeninputRequestInternalDimLayout:

        case EPeninputRequestDimResChangeLayout:

        case EPeninputRequestSupportInputMode:

        case EPeninputRequestSetInputLanguage:

		case EPeninputEnablePriorityChangeOnOriChange:

            ret = iPenInputSvr.HandleMessageL(aMessage);            

            break;

        case EPeninputRequestUpdateAppInfo:            

            {

            ret = HandleAppInfoChange(aMessage);

            if (ret == EBadRequest)

                {

                PanicClient(aMessage,EBadRequest );

                return EBadRequest;                

                }

            }

            break;

        case EPeninputRequestHandleClientCommand:

            {              

            ret = iPenInputSvr.HandleCommandL(aMessage);

            }

            break;        

        // requests we don't understand at all are a different thing,

        // so panic the client here, this function also completes the message

        default:

            {

            PanicClient(aMessage,EBadRequest );

            return EBadRequest;

            }

        }

    aMessage.Complete(ret);

    return ret;

    }

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

// CPeninputServerSession::SignalClientL

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

//

TBool CPeninputServerSession::CompletePendingRequestL(TInt aSignalCode,

                                        const TDesC& aEventData, int aPos)

    {

    TBool ok = EFalse;

    HBufC* data = aEventData.AllocLC();

//    iDataBuf.AppendL(data);

    if(aPos < 0) //append to the end

        {        

        iSignalCodeArray.Append(aSignalCode);

        iDataBuf.AppendL(data);

        }

    else

        {

        iSignalCodeArray.Insert(aSignalCode,aPos);

        iDataBuf.InsertL(data,aPos);        

        }    

    CleanupStack::Pop();//data

    if(iObserverActive)

        {             

        iPendingRequest.Complete(aSignalCode);

        iObserverActive = EFalse;

        ok = ETrue;

        }

    return ok;

    }

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

// CPeninputServerSession::SignalClientL

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

//

TBool CPeninputServerSession::SignalClientL(TInt aSignalCode,

                                                const TDesC& aEventData)

    {

    return CompletePendingRequestL(aSignalCode,aEventData);    

    }

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

// CPeninputServerSession::SignalUiActivationObserver

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

//

TBool CPeninputServerSession::SignalUiActivationObserver(TInt aSignalCode, 

                                                         TInt aType)

    {    

    //check registerd UI type

    if((aType & iRegistedPenUiType) || (iRegistedPenUiType == EPluginInputModeAll))

        {        

        //insert the notification event before other event as anim object is waiting 

        // for client process.

        TInt i = iSignalCodeArray.Count() - 1;

        for( ; i >=0 ; i--)

            {

            if(ESignalPenUiActivated == iSignalCodeArray[i] ||

                        ESignalPenUiDeActivated == iSignalCodeArray[i])

                        break;

            }

        TRAP_IGNORE( CompletePendingRequestL(aSignalCode,KNullDesC,++i) );

        return ETrue;

        }    

    return EFalse;

    }

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

// CPeninputServerSession::ProcessPendingEventBeforeExit

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

//

void CPeninputServerSession::ProcessPendingEventBeforeExit()

    {

    //only process pen ui notification event. Other events are discarded

    //for(TInt i = 0; i < iDelayedCmd.Count(); i++)

    //for(TInt i = 0; i < iDelayedCmd; i++)

        {

        iPenInputSvr.ExecutePendingAnimCmd();       

      //  iDelayedCmd --;

        }

    //remove any command

    for(TInt i = 0; i < iDataBuf.Count(); i++)

        {

        delete iDataBuf[i];

        }

    iDataBuf.Reset();    

    iSignalCodeArray.Reset();        

    //iDelayedCmd.Reset();

    iDelayedCmd = 0;

    }

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

// CPeninputServerSession::PanicClient

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

//

void CPeninputServerSession::PanicClient(const RMessage2& aMessage,TInt aPanic)

    {

    aMessage.Panic(KPeninputServerName, aPanic);

    }

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

// CPeninputServerSession::~CPeninputServerSession

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

//

CPeninputServerSession::~CPeninputServerSession()

    {

    ProcessPendingEventBeforeExit();

    iPenInputSvr.DecreaseSessionCount(this);

    iPenInputSvr.DelProcessLayouts( iClientProcess );

    iDataBuf.Close();

    iSignalCodeArray.Close();

    iCombinedEventBuf.Close();

    //iDelayedCmd.Close();

    delete iAppInfo;

    }

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

// CPeninputServerSession::ClientId

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

//

TInt CPeninputServerSession::ClientId()

    {

    return iClientId;

    }

void CPeninputServerSession::RemoveEventDataByIdx(TInt aIndex)

    {

    //remove all if aIndex < 0

    if( aIndex == KAllEventIndex )

        {

        for(TInt i = iDataBuf.Count() - 1; i >= 0; i--)

            {        

            HBufC* usedData = iDataBuf[i];

            iDataBuf.Remove(i);

            delete usedData;

            iSignalCodeArray.Remove(i);

            }

        }

    else

        {

        if( aIndex >= 0 && aIndex < iDataBuf.Count() ) 

            {

            HBufC* usedData = iDataBuf[aIndex];

            iDataBuf.Remove(aIndex);

            delete usedData;

            iSignalCodeArray.Remove(aIndex);

            }

        }        

    }

//void CPeninputServerSession::AddDelayedCmd(TAnimationCommand aCmd)

void CPeninputServerSession::AddDelayedCmd()

    {

    //iDelayedCmd.Append(aCmd);

    //iDelayedCmd++;

    }

void CPeninputServerSession::RegisterPenUiType(TInt aType)

    {

    iRegistedPenUiType = aType;

    }

TInt CPeninputServerSession::HandleAppInfoChange(const RMessage2& aMessage)

    {

    TInt ret = 0;

    TRAP_IGNORE(ret = HandleAppInfoChangeL(aMessage));	

    return ret;

    }

TInt CPeninputServerSession::HandleAppInfoChangeL(const RMessage2& aMessage)

    {

    //TPeninputAppInfo type;

    if (aMessage.Ptr0() == NULL || aMessage.Ptr1() == NULL)