/*

* Copyright (c) 2002 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 class CApSettingsDeleteOperation

*

*/

// INCLUDE FILES

#include <ApDataHandler.h>

#include <ApUtils.h>

#include <ActiveApDb.h>

#include <ApSettingsHandlerCommons.h>

#include <VpnApEngine.h>

#include <AknWaitDialog.h>

#include <AknProgressDialog.h>

#include <cdbcols.h>

#include <ErrorUI.h>

#include "Apsettingsdeleteoperation.h"

#include <ApAccessPointItem.h>

// Following includes are needed only for the test

// when ALL APs are deleted (checking delays, etc.)

// For testing purpose only, to make process time longer.

//  TEST STARTS

#include <ActiveApDb.h>

#include <ApSelect.h>

#include <ApListItem.h>

#include "ApSelectorListBoxModel.h"

#include "ApSettingsHandlerLogger.h"

//  TEST ENDS

// Stack size of the receiver thread.

LOCAL_C const TInt KDeleteThreadStackSize = 40960;

// Name of the receiver thread.

_LIT( KDeleteThreadName, "Access Point Settings UI Delete Operation" );

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

// CApSettingsDeleteOperation::NewL

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

//

CApSettingsDeleteOperation* CApSettingsDeleteOperation::NewL(

                                TInt aNoteControlId,

                                TInt aResourceID,

                                TUint32 aUid,

                                const TDesC& aNoteText

                                )

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::NewL")

    CApSettingsDeleteOperation* db =

            new ( ELeave ) CApSettingsDeleteOperation(

                            aNoteControlId,

                            aResourceID,

                            aUid

                            );

    CleanupStack::PushL( db );

    db->ConstructL( aNoteText );

    CleanupStack::Pop();

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::NewL")

    return db;

    }

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

// CApSettingsDeleteOperation::ConstructL

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

//

void CApSettingsDeleteOperation::ConstructL( const TDesC& aNoteText )

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::ConstructL")

    iErrorUi = CErrorUI::NewL( *CCoeEnv::Static() );

    iNoteText = aNoteText.AllocL();

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::ConstructL")

    }

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

// CApSettingsDeleteOperation::CApSettingsDeleteOperation

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

//

CApSettingsDeleteOperation::CApSettingsDeleteOperation(

                                 TInt aNoteControlId,

                                 TInt aResourceID,

                                 TUint32 aUid

                                 )

: CActive( EPriorityLow ),

  iNoteControlId( aNoteControlId ),

  iResourceID( aResourceID ),

  iUid( aUid )

    {

    CActiveScheduler::Add(this);

    APSETUILOGGER_WRITE( EModel,"Thread added to scheduler");

    }

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

// CApSettingsDeleteOperation::~CApSettingsDeleteOperation

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

//

CApSettingsDeleteOperation::~CApSettingsDeleteOperation()

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::~CApSettingsDeleteOperation")

    if(iDeleteOperation.Handle() != 0)

        {

        // wait for deletion to finish

        TRequestStatus status;          

        iDeleteOperation.Logon(status);

        User::WaitForRequest(status);

        iDeleteOperation.Close();

        }

    Cancel();                        

    delete iWaitDialog;

    delete iNoteText;

    delete iErrorUi;

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::~CApSettingsDeleteOperation")

    }

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

// CApSettingsDeleteOperation::RunL

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

//

void CApSettingsDeleteOperation::RunL()

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::RunL")

    switch ( iState )

        {

        case EProcOnDialogOn:

            { // two chances :

            // 1. Process finished normally

            // 2. Process leaved with error

            iState = EProcOffDialogOn;

            if ( iWaitDialog )

                {

                iWaitDialog->ProcessFinishedL();

                }

            if ( iStatus.Int() != KErrNone )

                {

                // some error has occured

                iErr = iStatus.Int();

                }

            Next();

            break;

            }

        case EProcOffDialogOn:

            {

            // now we wait for the dialog to be dismissed

            // just to be able to delete it

            // stays in this state as long as DialogDismissedL()

            // is not called, it will move it out into

            // EProcOffDialogOff and it also deletes

            Next();

            break;

            }

        case EProcOnDialogOff:

            { // this can't be, as dialog MUST stay as long as operation...

            iState = EProcOffDialogOff;

            Next();

            break;

            }

        case EProcOffDialogOff:

            { // now we can safely delete the dialog

            if ( iWaitDialog )

                {

                delete iWaitDialog;

                }

            if ( iErr != KErrNone )

                {

                // some error has occured

                iErrorUi->ShowGlobalErrorNoteL( iErr );

                }

            iDeleteOperation.Kill( iErr );

            iDeleteOperation.Close();            

//            delete this;

            break;

            }

        default:

            {

            __ASSERT_DEBUG( EFalse, Panic( EInvalidState ) );

            break;

            }

        }

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::RunL")

    }

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

// CApSettingsDeleteOperation::DoCancel

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

//

void CApSettingsDeleteOperation::DoCancel()

    { // must be here as it is pure virtual in base...    

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::DoCancel")

    if (iDeleteOperation.Handle() != 0 && iStatus == KRequestPending)

        {

        iDeleteOperation.LogonCancel(iStatus);

        } 

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::DoCancel")

    }

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

// CApSettingsDeleteOperation::DialogDismissedL

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

//

void CApSettingsDeleteOperation::DialogDismissedL( TInt /*aButtonId*/ )

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::DialogDismissedL")

    switch ( iState )

        {

        case EProcOnDialogOn:

            { // can't be, it means that dialog is dismissed by user

            // but process is still runing...

            iState = EProcOnDialogOff;

            break;

            }

        case EProcOffDialogOn:

            {

            // set dialog off

            iState = EProcOffDialogOff;

            // as proc is already off, it circles in RunL,

            break;

            }

        case EProcOnDialogOff:

            { // can't be, it is already off...

            iState = EProcOnDialogOff;

            Next();

            break;

            }

        case EProcOffDialogOff:

            {// can't be, it is already off...

            iState = EProcOffDialogOff;

            Next();

            break;

            }

        default:

            {

            __ASSERT_DEBUG( EFalse, Panic( EInvalidState ) );

            break;

            }

        }

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::DialogDismissedL")

    }

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

// CApSettingsDeleteOperation::StartL

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

//

void CApSettingsDeleteOperation::StartL()

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::StartL")

    iStatus = KRequestPending;

    // set the internal state as both is running

    iState = EProcOnDialogOn;

    // now we can start wait note...

    StartWaitNoteL();

    // now start new thread with operation

    StartDeleteOperationThreadL();

    SetActive();

    // now we can wait on it...

    // wait until the started thread completes (delete operation completes)

    // and it will enter RunL. RunL will notify the wait dialog about the

    // completion of the process.

    // As the dialog shall wait ~0.5 sec till display AND must be visible

    // for ~1.5 sec. as a minimum, but must stay up as long as the 'process'

    // on it is waiting for does not completes, we have the following chances:

    // if the process is shorter than 0.5,

        // after operation completes, state moves to EProcOffDialogOn,

        // dialog will be notified about completion by RunL, and RunL starts

        // circle and wait for the dialog to finish, multiply re-entering

        // and leaving RunL, as long as the state is EProcOffDialogOn.

        // As time was shorter than 0.5, thus dialog will not show itself

        // and will call DialogDismissedL, which will change the

        // state to EProcOffDialogOff, which, on entering

        // RunL again, will delete the dialog and kill the thread.

    // if the process was longer than 0.5 but shorter than 0.5+1.5sec,

        // after operation completes, state moves to EProcOffDialogOn,

        // dialog will be notified about completion by RunL, and RunL starts

        // circle and wait for the dialog to finish, multiply re-entering

        // and leaving RunL, as long as the state is EProcOffDialogOn.

        // As time was longer than 0.5, thus dialog will show itself

        // and will stay up for 1.5 sec, as process ended between

        // 0.5 and (0.5+1.5). After it dialog will call DialogDismissedL,

        // which will change the state to EProcOffDialogOff, which, on

        // entering RunL again, will delete the dialog and kill the thread.

    // if the process was longer than 0.5+1.5

        // after operation completes, state moves to EProcOffDialogOn,

        // dialog will be notified about completion by RunL, and RunL starts

        // circle and wait for the dialog to finish, multiply re-entering

        // and leaving RunL, as long as the state is EProcOffDialogOn.

        // As time was longer than 0.5+1.5, thus dialog will show itself

        // and will stay up for as long as 'process/operation' is not finished.

        // As thread completes, notifies dialog, after it dialog will

        // call back DialogDismissedL, which will change the state

        // to EProcOffDialogOff, which, on entering RunL again,

        // will delete the dialog and kill the thread.

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::StartL")

    }

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

// CApSettingsDeleteOperation::Next

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

//

void CApSettingsDeleteOperation::Next()

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::Next")

    iStatus = KRequestPending;

    SetActive();

    TRequestStatus *status = &iStatus;

    User::RequestComplete( status, KErrNone );  // Invoke RunL()

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::Next")

    }

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

// CApSettingsDeleteOperation::RunDeleteThread

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

//

TInt CApSettingsDeleteOperation::RunDeleteThread( TAny* aPtr )

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::RunDeleteThread")

    CApSettingsDeleteOperation* aop = 

            STATIC_CAST( CApSettingsDeleteOperation*, aPtr );

    CTrapCleanup* TheTrapCleanup = CTrapCleanup::New(); // get cleanup stack

    TRAPD(r, aop->DoRunDeleteThreadL( aop ) );

    delete TheTrapCleanup; // destroy cleanup stack

    aop->iErr = r;

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::RunDeleteThread")

    return ( r );

    }

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

// CApSettingsDeleteOperation::DoRunDeleteThreadL

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

//

TInt CApSettingsDeleteOperation::DoRunDeleteThreadL( 

                                    CApSettingsDeleteOperation* aop )

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::DoRunDeleteThreadL")

    CCommsDatabase* db = CCommsDatabase::NewL( EDatabaseTypeIAP );

    CleanupStack::PushL( db );

    APSETUILOGGER_WRITE( EDelete,"Commsdb created");

    CApDataHandler* handler = CApDataHandler::NewLC( *db );

    APSETUILOGGER_WRITE( EDelete,"CApDataHandler created");

    CVpnApEngine* vpnengine = CVpnApEngine::NewLC( db );

    APSETUILOGGER_WRITE( EDelete,"CVpnApEngine created");

    TBool ownTransaction = StartTransactionLC( db, 

                                               /*aWrite*/ETrue, 

                                               /*aRetry*/ETrue );

    APSETUILOGGER_WRITE( EDelete,"Tr.started");

//  NORMAL OPERATION STARTS

    TBool isvpn = vpnengine->IsVpnApL( aop->iUid );

    APSETUILOGGER_WRITE( EDelete,"IsVpnApL returned");

    // if linked to a VPN, the VPN also must be deleted

    // deleting the VPN part is the delete operation's responsibility...

    if ( isvpn )

        {

        vpnengine->DeleteVpnL( aop->iUid );

        }

    else

        {

        handler->RemoveAPL( aop->iUid );

        }

    APSETUILOGGER_WRITE( EDelete,"RemoveAPL returned");

    if ( ownTransaction )

        {

        TInt err = db->CommitTransaction();

        User::LeaveIfError( err );

        CleanupStack::Pop(); // RollbackTransactionOnLeave

        }

    APSETUILOGGER_WRITE( EDelete," delete finished");

    CleanupStack::PopAndDestroy( 3, db ); //db,handler,vpnengine

//  NORMAL OPERATION ENDS

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::DoRunDeleteThreadL")

    return KErrNone;

    }

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

// CApSettingsDeleteOperation::StartWaitNoteL

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

//

void CApSettingsDeleteOperation::StartWaitNoteL()

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::StartWaitNoteL")

    if ( iWaitDialog )

        {

        delete iWaitDialog;

        iWaitDialog = NULL;

        }

    iWaitDialog =

        new ( ELeave ) CAknWaitDialog

                ( REINTERPRET_CAST(CEikDialog**,&iWaitDialog) );

    iWaitDialog->PrepareLC( iResourceID );

    iWaitDialog->SetTone( CAknNoteDialog::ENoTone );

    iWaitDialog->SetTextL( *iNoteText );

    iWaitDialog->SetCallback( this );

    iWaitDialog->RunLD();

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::StartWaitNoteL")

    }

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

// CApSettingsDeleteOperation::StartDeleteOperationThreadL

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

//

void CApSettingsDeleteOperation::StartDeleteOperationThreadL()

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::StartDeleteOperationThreadL")

    TInt err = iDeleteOperation.Create

            (

            KDeleteThreadName, // aName

            RunDeleteThread, // aFunction

            KDeleteThreadStackSize, // aStackSize

            NULL,         // Use this heap.

            this // aPtr

            );

    APSETUILOGGER_WRITE_FORMAT( EDelete, "iDeleteOperation create returned, code:%d", err);    

    User::LeaveIfError( err );

    // on termination/death of this thread, it will call RunL

    iDeleteOperation.Logon( iStatus );

    // let's start the thread

    iDeleteOperation.Resume();

    // set the internal state as both is running

    iState = EProcOnDialogOn;

    APSETUILOGGER_LEAVEFN( EDelete,"DeleteOp::StartDeleteOperationThreadL")

    }

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

// CApSettingsDeleteOperation::StarTransactionLC

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

//

TBool CApSettingsDeleteOperation::StartTransactionLC( CCommsDatabase* aDb,

                                                      TBool aWrite, 

                                                      TBool aRetry /*ETrue*/ )

    {

    APSETUILOGGER_ENTERFN( EDelete,"DeleteOp::StartTransactionLC")

    TBool retval( EFalse );

    if ( !aDb->InTransaction() )

        {

        TInt retriesLeft( aRetry ? KRetryCount : 1 );