// Copyright (c) 2003-2009 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:

//

#include "DbUndo.h"

// UNDO Class for Integers

void CDbUndoInt::ConstructL(const TDesC &aColumn, const TUint32 &aValue)

	{

	iColumn.Set(aColumn);

	iValue=aValue;

	}

CDbUndoInt *CDbUndoInt::NewL(const TDesC &aColumn, const TUint32 &aValue)

	{

	CDbUndoInt *undo = new(ELeave) CDbUndoInt();

	CleanupStack::PushL(undo);

	undo->ConstructL(aColumn, aValue);

	CleanupStack::Pop();

	return undo;

	}

void CDbUndoInt::UndoL(CDbAgtBase *aDb)

	{

	// Reset value in the table back to the values stored in this undo object

	aDb->ModifyColumnIntL(iColumn, iValue);

	}

// UNDO Class for Booleans

void CDbUndoBool::ConstructL(const TDesC &aColumn, const TBool &aValue)

	{

	iColumn.Set(aColumn);

	iValue=aValue;

	}

CDbUndoBool *CDbUndoBool::NewL(const TDesC &aColumn, const TBool &aValue)

	{

	CDbUndoBool *undo = new(ELeave) CDbUndoBool();

	CleanupStack::PushL(undo);

	undo->ConstructL(aColumn, aValue);

	CleanupStack::Pop();

	return undo;

	}

void CDbUndoBool::UndoL(CDbAgtBase *aDb)

	{

	// Reset value in the table back to the values stored in this undo object

	aDb->ModifyColumnBoolL(iColumn, iValue);

	}

// UNDO Class for text

void CDbUndoText::ConstructL(const TDesC &aColumn, const TDesC16& aValue)

	{

	iColumn.Set(aColumn);

	iText.Copy(aValue);

	}

CDbUndoText *CDbUndoText::NewL(const TDesC &aColumn, const TDesC16& aValue)

	{

	CDbUndoText *undo = new(ELeave) CDbUndoText();

	CleanupStack::PushL(undo);

	undo->ConstructL(aColumn, aValue);

	CleanupStack::Pop();

	return undo;

	}

void CDbUndoText::UndoL(CDbAgtBase *aDb)

	{

	// Reset text value in the table back to the text values stored in this undo object

	aDb->ModifyColumnTextL(iColumn, iText);

	}

// UNDO Class for long text

void CDbUndoLongText::ConstructL(const TDesC &aColumn, const HBufC* aValue)

	{

	iColumn.Set(aColumn);

	// Save the long text from CommDB, allocate it!

	iLongText = aValue->AllocL();

	}

CDbUndoLongText *CDbUndoLongText::NewL(const TDesC &aColumn, const HBufC* aValue)

	{

	CDbUndoLongText *undo = new(ELeave) CDbUndoLongText();

	CleanupStack::PushL(undo);

	undo->ConstructL(aColumn, aValue);

	CleanupStack::Pop();

	return undo;

	}

void CDbUndoLongText::UndoL(CDbAgtBase *aDb)

	{

	// Reset text value in the table back to the text values stored in this undo object

	TPtr value(iLongText->Des());

	aDb->ModifyColumnLongTextL(iColumn, value);

	// Allocated in ConstructL, remeber to delete!

	delete iLongText;

	}

// UNDO Class for Agent Extension name

void CDbUndoAgentExt::ConstructL(const TDesC &aService, const TDesC& aAgentExt)

	{

	iColumn.Set(aService);

	iText.Copy(aAgentExt);

	}

CDbUndoAgentExt *CDbUndoAgentExt::NewL(const TDesC &aService, const TDesC& aAgentExt)

	{

	CDbUndoAgentExt *undo = new(ELeave) CDbUndoAgentExt();

	CleanupStack::PushL(undo);

	undo->ConstructL(aService, aAgentExt);

	CleanupStack::Pop();

	return undo;

	}

void CDbUndoAgentExt::UndoL(CDbAgtBase* /*aDb*/)

	{

	}

// Base class routines, used to open a CCommsDatabase and modify records

CDbAgtBase::CDbAgtBase() : iQHeader(_FOFF(CDbUndoBase,iLink)), iQIter(iQHeader)

	{

	}

void CDbAgtBase::ConstructL()

	{

#ifdef SYMBIAN_NON_SEAMLESS_NETWORK_BEARER_MOBILITY

	iDb = CMDBSession::NewL(KCDVersion1_2);

#else

	iDb = CMDBSession::NewL(KCDVersion1_1);

#endif

	}

CDbAgtBase::~CDbAgtBase()

	{

	delete iDb;

	}

void CDbAgtBase::SetColumnIntL(const TDesC &aColumn, const TUint32 &aValue)

	{

	// Used by a client to set a value in the database, also remembers the change

	// for undo purposes later

	TUint32 OldValue;

	CDbUndoInt *oldRecord;

	// Get the current value in the table

	TInt ValType;

	CMDBField<TUint>* field = static_cast<CMDBField<TUint>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));

	OldValue = *field;

	// Add to the undo list

	oldRecord = CDbUndoInt::NewL(aColumn, OldValue);

	iQHeader.AddLast(*oldRecord);

	// Change the record to the new value

	ModifyColumnIntL(aColumn, aValue);

	}

void CDbAgtBase::ModifyColumnIntL(const TDesC &aColumn, const TUint32 &aValue)

	{

	TInt ValType;

	CMDBField<TUint>* field = static_cast<CMDBField<TUint>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));

	*field = aValue;

	field->ModifyL(*iDb);

	}

void CDbAgtBase::SetColumnBoolL(const TDesC &aColumn, const TBool &aValue)

	{

	// Used by a client to set a value in the database, also remembers the change

	// for undo purposes later

	TBool OldValue;

	CDbUndoBool *oldRecord;

	// Get the current value in the table

	TInt ValType;

	CMDBField<TBool>* field = static_cast<CMDBField<TBool>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));

	OldValue = static_cast<TBool>(*field);

	// Add to the undo list

	oldRecord = CDbUndoBool::NewL(aColumn, OldValue);

	iQHeader.AddLast(*oldRecord);

	// Change the record to the new value

	ModifyColumnBoolL(aColumn, aValue);

	}

void CDbAgtBase::ModifyColumnBoolL(const TDesC &aColumn, const TBool &aValue)

	{

	TInt ValType;

	CMDBField<TBool>* field = static_cast<CMDBField<TBool>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));

	*field = aValue;

	field->ModifyL(*iDb);

	}

void CDbAgtBase::SetColumnTextL(const TDesC &aColumn, const TDesC16& aValue)

	{

	// Used by a client to set a text value in the database, also remembers the change

	// for undo purposes later

	TBuf16<KCommsDbSvrMaxFieldLength> OldText;

	CDbUndoText *oldRecord;

	// Get the current value in the table

	TInt ValType;

	CMDBField<TDesC>* field = static_cast<CMDBField<TDesC>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));

	OldText = static_cast<TDesC>(*field);

	// Add to the undo list

	oldRecord = CDbUndoText::NewL(aColumn, OldText);

	iQHeader.AddLast(*oldRecord);

	// Change the record to the new value

	ModifyColumnTextL(aColumn, aValue);

	}

void CDbAgtBase::ModifyColumnTextL(const TDesC &aColumn, const TDesC16& aValue)

	{

	TInt ValType;

	CMDBField<TDesC>* field = static_cast<CMDBField<TDesC>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));

	*field = aValue;

	field->ModifyL(*iDb);

	}

void CDbAgtBase::SetColumnLongTextL(const TDesC &aColumn, const TDesC16& aValue)

	{

	// Used by a client to set a long text value in the database, also remembers the change

	// for undo purposes later

	CDbUndoLongText *oldRecord;

	// Get the current long text in the table, it is allocated in CommDB in ReadLongTextLC.

	// The method returns a pointer into HBufC.

	TInt ValType;

	CMDBField<TDesC>* field = static_cast<CMDBField<TDesC>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));

	HBufC* OldLongText = HBufC::NewL(static_cast<TDesC>(*field).Length());

	CleanupStack::PushL(OldLongText);

	*OldLongText = *field;

	// Add to the undo list

	oldRecord = CDbUndoLongText::NewL(aColumn, OldLongText);

	iQHeader.AddLast(*oldRecord);

	// Allocated into CDbUndoLongText in ConstructL, and this one was created in CommDB so delete it!

	// this is pushed above so clean up properly

	CleanupStack::PopAndDestroy(OldLongText);

	// Change the record to the new value

	ModifyColumnLongTextL(aColumn, aValue);

	}

void CDbAgtBase::ModifyColumnLongTextL(const TDesC &aColumn, const TDesC16& aValue)

	{

	TInt ValType;

	CMDBField<TDesC>* field = static_cast<CMDBField<TDesC>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));

	field->SetMaxLengthL(aValue.Length());

	*field = aValue;

	field->ModifyL(*iDb);

	}

void CDbAgtBase::UndoDatabaseChangesL()

	{

	CDbUndoBase* currentitem;

	// Traverse back through the changes and reset database to the way it was

	iQIter.SetToLast();

	while((currentitem = iQIter--) != NULL)

        {

        // reset the value of this record in the database

		currentitem->UndoL(this);

        currentitem->iLink.Deque();

        delete currentitem;

        };

	}

// GPRS OUTGOING TABLE access class

CDbGPRSOutgoingTable *CDbGPRSOutgoingTable::NewL()

	{

	CDbGPRSOutgoingTable *gprs = new(ELeave) CDbGPRSOutgoingTable();

	CleanupStack::PushL(gprs);

	gprs->ConstructL();

	CleanupStack::Pop();

	return gprs;

	}

CDbGPRSOutgoingTable::CDbGPRSOutgoingTable()

	{

	}

void CDbGPRSOutgoingTable::ConstructL()

	{

	CDbAgtBase::ConstructL();

	iTable = new CMDBRecordSet<CCDWCDMAPacketServiceRecord>(KCDTIdWCDMAPacketServiceRecord);

	iTable->LoadL(*iDb);

	iCurrentRecord = 0;

	}

CDbGPRSOutgoingTable::~CDbGPRSOutgoingTable()

	{

	delete iTable;

	}

// CSD DIAL OUT table class

CDbCsdTable *CDbCsdTable::NewL()

	{

	CDbCsdTable *csd = new(ELeave) CDbCsdTable();

	CleanupStack::PushL(csd);

	csd->ConstructL();

	CleanupStack::Pop();

	return csd;

	}

CDbCsdTable::CDbCsdTable()

	{

	}

void CDbCsdTable::ConstructL()

	{

	CDbAgtBase::ConstructL();

	iTable = new CMDBRecordSet<CCDDialOutISPRecord>(KCDTIdDialOutISPRecord);

	iTable->LoadL(*iDb);

	iCurrentRecord = 0;

	}

CDbCsdTable::~CDbCsdTable()

	{

	delete iTable;

	}

// MODEM table class

CDbModemTable *CDbModemTable::NewL()

	{

	CDbModemTable *modem = new(ELeave) CDbModemTable();

	CleanupStack::PushL(modem);

	modem->ConstructL();

	CleanupStack::Pop();

	return modem;

	}

CDbModemTable::CDbModemTable()

	{

	}

void CDbModemTable::ConstructL()

	{

	CDbAgtBase::ConstructL();

	iTable = new CMDBRecordSet<CCDModemBearerRecord>(KCDTIdModemBearerRecord);

	iTable->LoadL(*iDb);

	iCurrentRecord = 0;

	}

CMDBRecordSetBase*CDbCsdTable::Table()

	{

	return(iTable);

	}

CDbModemTable::~CDbModemTable()

	{

	delete iTable;

	}