/*

* 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:  Operation that searches string from email.

*

*/

#include "emailtrace.h"

#include "ipsplgheaders.h"

/** Snippet length, for HTML tags. */

const TInt KIpsPlgSnippetLen = 300;

// Defines the number of mails handled in one scheduler round

const TInt KIpsPlgSearchMailsInRound = 10;

// ======== CONSTRUCTORS & DESTRUCTOR ========

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

// CIpsPlgSearchOp::NewL()

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

//

CIpsPlgSearchOp* CIpsPlgSearchOp::NewL(

    CIpsPlgSearch& aObserver )

    {

    FUNC_LOG;

    CIpsPlgSearchOp* self = CIpsPlgSearchOp::NewLC( aObserver );

    CleanupStack::Pop( self );

    return self;

    }

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

// CIpsPlgSearchOp::NewLC()

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

//

CIpsPlgSearchOp* CIpsPlgSearchOp::NewLC(

    CIpsPlgSearch& aObserver )

    {

    FUNC_LOG;

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

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CIpsPlgSearchOp::~CIpsPlgSearchOp()

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

//

CIpsPlgSearchOp::~CIpsPlgSearchOp()

    {

    FUNC_LOG;

    delete iMessage;

    iMessage = NULL;

    delete iHeader;

    iHeader = NULL;

    if ( iSearcher )

        {

        iSearcher->Cleanup();

        }

    delete iSearcher;

    iSearcher = NULL;

    }

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

// CIpsPlgSearchOp::CIpsPlgSearchOp()

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

//

CIpsPlgSearchOp::CIpsPlgSearchOp(

    CIpsPlgSearch& aObserver )

    :

    CActive( EPriorityStandard ),

    iObserver( aObserver ),

    iMessage( NULL )

    {

    FUNC_LOG;

    CActiveScheduler::Add( this );

    }

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

// CIpsPlgSearchOp::ConstructL()

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

//

void CIpsPlgSearchOp::ConstructL()

    {

    FUNC_LOG;

    iState = EStarted;

    iSearcher = CIpsPlgTextSearcher::NewL( *this );

    iSearcher->SetParametersL( 

        iObserver.SearchStringsL(), 

        EIpsPlgCriteriaOperationOR,

        EFalse,

        KIpsPlgSnippetLen );

    ActivateAndComplete();

    }

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

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

// From class CIpsPlgBaseOperation.

// CIpsPlgSearchOp::DoCancel()

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

//

void CIpsPlgSearchOp::DoCancel()

    {

    FUNC_LOG;

    iSearcher->Cleanup();

    iState = ECanceled;

    }

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

// From class CIpsPlgBaseOperation.

// CIpsPlgSearchOp::RunL()

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

//

void CIpsPlgSearchOp::RunL()

    {

    FUNC_LOG;

    switch ( iState )

        {

        case EStarted:

            {

            // Collect all message id's in the mailbox and sort them.

            iObserver.CollectMessagesL();

            iObserver.Sort();

            iState = ERunning;

            ActivateAndComplete();

            break;

            }

        case ERunning:

            {

            for ( TInt i(0); i < KIpsPlgSearchMailsInRound; i++ )

                {

                if ( NextMailL() )

                    {

                    // Mail found, read the content and search for the string.

                    // It must be made sure, that the search string contains valid 

                    // data to search the body, i.e. character set must match.

                    // The following line is commented out since it currently doesn't do anything

                    // HandleHtmlL(); 

                    SearchL();

                    }

                else

                    {

                    FinalizeL();

                    return;

                    }

                }

            iState = ERunning;

            ActivateAndComplete();

            break;

            }

        default:

            {

            break;

            }

        }

    }

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

// From class CIpsPlgBaseOperation.

// CIpsPlgSearchOp::RunError()

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

//

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

    {

    FUNC_LOG;

    return KErrGeneral;

    }

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

// CIpsPlgSearchOp::NextMailL()

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

//

TBool CIpsPlgSearchOp::NextMailL()

    {

    FUNC_LOG;

    // In case the operation is cancelled, do not try to any extra steps.

    if ( iState == ERunning )

        {

        // Delete object before creating new. Previous object is not needed.

        delete iMessage;

        iMessage = NULL;        

        delete iHeader;

        iHeader = NULL;

        iMessage = iObserver.NextMessageL();        

        // If message is not set, the search is finished. 

        // Run down the operation.

        if ( !iMessage )

            {

            iState = EFinished;

            return EFalse;

            }        

        // Retrieve the message header also.

        iHeader = iObserver.MessageHeaderL();        

        }

    else

        {

        // Stop the loop, cancel should not continue.

        return EFalse;

        }

    return ETrue;        

    }

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

// CIpsPlgSearchOp::HandleHtmlL()

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

//

void CIpsPlgSearchOp::HandleHtmlL()

    {

    FUNC_LOG;

    if ( iState == ERunning )

        {

        }

    }

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

// CIpsPlgSearchOp::SearchBodyL()

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

//

void CIpsPlgSearchOp::SearchBodyL()

    {

    FUNC_LOG;

    if ( iState == ERunning )

        {

        // Just small amount of code to find the strings from the body.

        CParaFormatLayer* para = CParaFormatLayer::NewL();

        CleanupStack::PushL( para );

        CCharFormatLayer* chars = CCharFormatLayer::NewL();

        CleanupStack::PushL( chars );

        CRichText* txt = CRichText::NewL( para, chars );

        CleanupStack::PushL( txt );

        iMessage->GetBodyTextL( 

            iObserver.CurrentMessage().Id(),

            CImEmailMessage::EThisMessageOnly, 

            *txt, 

            *para, 

            *chars );    

        RBuf temp;

        temp.CreateL( txt->DocumentLength() ); 

        CleanupClosePushL( temp );

        txt->Extract( temp );

        SearchFromStringL( temp );

        CleanupStack::PopAndDestroy( &temp );

        CleanupStack::PopAndDestroy( txt );    

        CleanupStack::PopAndDestroy( chars );

        CleanupStack::PopAndDestroy( para );

        }    

    }

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

// CIpsPlgSearchOp::SearchFromArrayL()

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

//

TBool CIpsPlgSearchOp::SearchFromArrayL( const CDesCArray& aArray )

    {

    FUNC_LOG;

    TBool found( EFalse );

    for ( TInt item(0); iState == ERunning && item < aArray.Count() && !found; item++ )

        {

        found = SearchFromStringL( aArray[item] );

        }

    return found;

    }

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

// CIpsPlgSearchOp::SearchFromStringL()

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

//

TBool CIpsPlgSearchOp::SearchFromStringL( const TDesC& aString )

    {

    FUNC_LOG;

    TBool found( EFalse );

    if ( iState == ERunning )

        {

        found = iSearcher->SearchL( aString );

        }

    return found;

    }

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

// CIpsPlgSearchOp::SearchL()

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

//

void CIpsPlgSearchOp::SearchL()

    {

    FUNC_LOG;

    if ( iState == ERunning )

        {

        iSearcher->Cleanup();                       

        // Mail is fetched, search from entire mail.

        if ( iHeader )

            {                           

            SearchFromEntireMailL(); 

            }

        // Mail not fetched, search only from subject.            

        else

            {                                        

            SearchFromSubjectL();                                             

            }                       

        iState = ( iState == EHit ) ? ERunning : iState;

        }

    }

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

// CIpsPlgSearchOp::HitL()

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

//

void CIpsPlgSearchOp::HitL( 

    const TDesC& /* aSnippet */, 

    TInt /* aSnippetCharPos */, 

    TBool /* aStartIncomplete */, 

    TBool /* aEndIncomplete */ )

    {

    FUNC_LOG;

    iObserver.MatchFoundL();

    iState = EHit;

    }

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

// CIpsPlgSearchOp::FinalizeL()

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

//

void CIpsPlgSearchOp::FinalizeL()

    {

    FUNC_LOG;

    // In case of cancel, the stop should not be indicated.

    if ( iState == EFinished )

        {        

        iObserver.SearchFinishedL();

        iState = EStopped;

        }

    }

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

// CIpsPlgSearchOp::ActivateAndComplete()

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

//

void CIpsPlgSearchOp::ActivateAndComplete( )

    {

    FUNC_LOG;

    iStatus = KRequestPending; 

    SetActive();    

    TRequestStatus* status = &iStatus;

    User::RequestComplete( status, KErrNone );    

    }

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

// CIpsPlgSearchOp::SearchFromEntireMailL( )

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

//

void CIpsPlgSearchOp::SearchFromEntireMailL( )

    {

    FUNC_LOG;

    if ( SearchFromStringL( iHeader->Subject() ) ) 

        {

        return;

        }

    if ( SearchFromStringL( iHeader->From() ) )

        {

        return;

        }

    if ( SearchFromArrayL( iHeader->ToRecipients() ) )

        {

        return;

        }

    if ( SearchFromArrayL( iHeader->CcRecipients() ) )

        {

        return;

        }

    SearchBodyL();

    }

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

// CIpsPlgSearchOp::SearchFromSubjectL( )

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

//

void CIpsPlgSearchOp::SearchFromSubjectL( )

    {

    FUNC_LOG;

    RBuf subject;

    CleanupClosePushL( subject );

    iObserver.GetSubjectL( subject );

    TBool found = SearchFromStringL( subject );

    CleanupStack::PopAndDestroy( &subject );

    if ( !found )

        {

        RBuf sender;

        CleanupClosePushL( sender );

        iObserver.GetSenderL( sender );

        found = SearchFromStringL( sender );

        CleanupStack::PopAndDestroy( &sender );  

        }

    }

// End of File