/*

* 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 "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:            DB Engine

*

*/

//system include files

#include <aknfep.rsg>

#include <PtiUserDicEntry.h>

#include <PtiEngine.h>

#include <StringLoader.h> 

//user inlucde files

#include "dbmanagement.h"

#include "AknFepGlobalEnums.h"

#include "AknFepManager.h"

#include "AknFepSharedDataInterface.h"

// CONSTANTS

const TInt KInputPhraseMaxLength = 7;

const TInt KInvalidPhrase        = -103;

const TInt KPhraseExisted        = -104;

const TInt KPhraseNotExisted     = -105;

const TInt KInputPhraseOutRange  = -106;

const TInt KDBHasNoSpace         = -150;

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

// Symbian constructor

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

//

CDBManagement* CDBManagement::NewL( CAknFepManager* aFepManager )

    {

    CDBManagement* self = new( ELeave ) CDBManagement();

    CleanupStack::PushL( self );

    self->ConstructL(aFepManager);

    CleanupStack::Pop( self );

    return self;

    }

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

// C++ constructor

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

//

CDBManagement::CDBManagement()

    {

    }

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

// Second phase constructor

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

//

void CDBManagement::ConstructL( CAknFepManager* aFepManager )

    {

    iAknFepSharedDataInterface = CAknFepSharedDataInterface::NewL( aFepManager );

    iFepManager = aFepManager;

    iPtiEngineOfFep = iFepManager->PtiEngine();

    iPtiEngine = CPtiEngine::NewL(ETrue); 

    }

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

// destructor

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

//

CDBManagement::~CDBManagement()

    {

    delete iAknFepSharedDataInterface;

    delete iPtiEngine;

    }

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

// Add phrase to DB.

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

//

TBool CDBManagement::AddPhraseToDB( const TDesC& aPhraseAdd )

    {    

    TInt retCode;

    TPtiUserDictionaryEntry addUdbEntry(aPhraseAdd);

    TRAP_IGNORE( ActivateLanguageOfFepL() );

    //Add the phrase to the DB by PTI Engine

    iPtiEngineOfFep->AddUserDictionaryEntry( addUdbEntry );

    retCode = iPtiEngine->AddUserDictionaryEntry( addUdbEntry );

    if ( KErrNone != retCode )

        {

        GetDBErrMsg( retCode );

        return EFalse;

        }

    return ETrue;

    }

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

// Edit phrase from DB

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

//

TBool CDBManagement::EditPhraseFromDB(  const TDesC& aPhraseOld,

                                        const TDesC& aPhraseNew )

    {

    TBool retCode;

    //Add the new phrase to the DB by PTI Engine

    retCode = AddPhraseToDB( aPhraseNew );

    if ( !retCode )

        {

        GetDBErrMsg( retCode );

        return EFalse;

        }    

    retCode = RemovePhraseFromDB( aPhraseOld );

    if ( !retCode )

        {

        GetDBErrMsg( retCode );

        return EFalse;

        }

    return ETrue;

    }

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

// Remove phrase from DB

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

//

TBool CDBManagement::RemovePhraseFromDB(const TDesC& aPhraseRemove )

    {

    TInt retCode;

    TPtiUserDictionaryEntry removeUdbEntry( aPhraseRemove );

    //Remove the phrase from the DB by PTI Engine

    TRAP_IGNORE( ActivateLanguageOfFepL() );

    iPtiEngineOfFep->RemoveEntryFromUserDictionary( removeUdbEntry );

    retCode = iPtiEngine->RemoveEntryFromUserDictionary( removeUdbEntry );

    if( KErrNone != retCode )

        {

        GetDBErrMsg( retCode );

        return EFalse;

        }

    return ETrue;

    }

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

// Get phrases from DB

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

//

TBool CDBManagement::GetPhraseFromDBL( CDesCArray& aPhraseGet )

    {

    TPtiUserDictionaryEntry getUdbEntry;

    TInt retCode;

    TInt i = 0; 

    ActivateLanguage();

    retCode = iPtiEngine->GetUserDictionaryEntry(i, getUdbEntry);

    while (retCode == KErrNone)

        {

        aPhraseGet.AppendL(getUdbEntry.Word());

        i++;

        retCode = iPtiEngine->GetUserDictionaryEntry(i, getUdbEntry);

        }

    return ETrue;

    }

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

// Get Error Message

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

//

void CDBManagement::GetErrMsg( TDes& aErrMsg )

    {

    aErrMsg.Copy(iErrMsg);

    }

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

// Check the input phrase

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

//

TBool CDBManagement::InputPhraseCheck( TDes& aPhraseInput )

    {

    const TUint16 KChineseUnicodeMin = 0x4E00;

    const TUint16 KChineseUnicodeMax = 0x9FA5; 

    const TUint16 KSpaceUnicode      = 0x0020;

    const TUint16 KKeytroke2Unicode  = 0x4E28;

    const TUint16 KKeytroke3Unicode  = 0x4E3F;

    const TUint16 KKeytroke4Unicode  = 0x4E36;

    const TUint16 KKeytroke5Unicode  = 0x4E5B;

    TBuf<KInputPhraseMaxLength> inputText;

    aPhraseInput.TrimAll();

    TBool inValidFlg = EFalse;

    //the input phrase length more than the max length

    if ( aPhraseInput.Length() > KInputPhraseMaxLength )

        {

        return EFalse;

        }

    //check every character of input phrase

    for ( TInt i = 0; i < aPhraseInput.Length(); ++i )

        {

        if ( ( (TInt)aPhraseInput[i] >= KChineseUnicodeMin ) &&

            ( (TInt)aPhraseInput[i] <= KChineseUnicodeMax ) )

            {

            if ( ( KKeytroke2Unicode == (TInt)aPhraseInput[i] ) ||

                ( KKeytroke3Unicode == (TInt)aPhraseInput[i] ) ||

                ( KKeytroke4Unicode == (TInt)aPhraseInput[i] ) ||

                ( KKeytroke5Unicode == (TInt)aPhraseInput[i] ) )

                {

                inValidFlg = ETrue;

                }

            else

                {

                inputText.Append( aPhraseInput[i] );

                }

            }

        else

            {

            if ( KSpaceUnicode != (TInt)aPhraseInput[i] )

                {

                inValidFlg = ETrue;

                }            

            }

        }

    //out the chinese phrase.

    aPhraseInput = inputText;

    if ( inValidFlg )

        {

        StringLoader::Load( iErrMsg, R_AKNFEP_CHINESE_USER_DB_NOTE_ONLY_CHINESE_TEXT );

        return EFalse;

        }

    if ( aPhraseInput.Length() < 2 )

        {

        StringLoader::Load( iErrMsg, R_AKNFEP_CHINESE_USER_DB_NOTE_TOO_SHORT_TEXT );

        return EFalse;

        }

    return ETrue;

    }

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

// Set language

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

//

void CDBManagement::ActivateLanguageL()

    {

    TInt epocLanguageID = iAknFepSharedDataInterface->InputTextLanguage();

    iPtiEngine->ActivateLanguageL((TLanguage)epocLanguageID);

    switch(epocLanguageID)

        {

        case ELangHongKongChinese:

            iPtiEngine->SetInputMode( EPtiEngineStrokeByPhrase );

            break;

        case ELangTaiwanChinese:

            iPtiEngine->SetInputMode( EPtiEngineZhuyinByPhrase );

            break;

        case ELangPrcChinese:

            iPtiEngine->SetInputMode( EPtiEnginePinyinByPhrase );

            break;

        }   

    }

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

// Set language

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

//

void CDBManagement::ActivateLanguageOfFepL()

    {

    TInt epocLanguageID = iAknFepSharedDataInterface->InputTextLanguage();

    iPtiEngineOfFep->ActivateLanguageL((TLanguage)epocLanguageID);

    switch(epocLanguageID)

        {

        case ELangHongKongChinese:

            iPtiEngineOfFep->SetInputMode( EPtiEngineStroke );

            break;

        case ELangTaiwanChinese:

            iPtiEngineOfFep->SetInputMode( EPtiEngineZhuyinByPhrase );

            break;

        case ELangPrcChinese:

            iPtiEngineOfFep->SetInputMode( EPtiEnginePinyin );

            break;

        }   

    }

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

// Set language

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

//

void CDBManagement::ActivateLanguage()

    {

    TRAP_IGNORE( ActivateLanguageL() );  

    }

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

// Get the ptiengine's error

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

//

void CDBManagement::GetDBErrMsg( TInt aErrCode )

    {

    switch( aErrCode )

        {

        case KInvalidPhrase:

            StringLoader::Load( iErrMsg, R_AKNFEP_CHINESE_USER_DB_NOTE_INVALID_PHRASE_TEXT );

            break;

        case KPhraseExisted:

            StringLoader::Load( iErrMsg, R_AKNFEP_CHINESE_USER_DB_NOTE_PHRASE_EXISTED_TEXT );

            break;

        case KPhraseNotExisted:

            StringLoader::Load( iErrMsg, R_AKNFEP_CHINESE_USER_DB_NOTE_NOT_EXISTED_TEXT );

            break;

        case KInputPhraseOutRange:

            StringLoader::Load( iErrMsg, R_AKNFEP_CHINESE_USER_DB_PHRASE_TOO_LONG_TEXT );

            break;

        case KDBHasNoSpace:

            StringLoader::Load( iErrMsg, R_AKNFEP_CHINESE_USER_DB_NOTE_DB_HAVE_NO_SPACE_TEXT );

            break; 

        default:

            break;

        }

    }

//End of File