/*

* Copyright (c) 2003-2006 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:   PtiKeyMappings class implementation.

*

*/

#include "PtiKeyMappings.h"

#include <PtiKeyMapData.h>

// CONSTANTS

#ifdef _DEBUG

_LIT(KPtiNoKeyMapDataPanic, "PtiEngine: No ITU-T keymap data set.");

#endif

//

// CPtiMappings

//

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

// CPtiMappings::CPtiMappings

// 

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

// 

CPtiMappings::CPtiMappings()

	{

	}

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

// CPtiMappings::CPtiMappings

// 

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

// 	

CPtiMappings::CPtiMappings(CPtiKeyMapData* aData) : iKeyMapData(aData)

	{	

	}

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

// CPtiMappings::~CPtiMappings

// 

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

// 

CPtiMappings::~CPtiMappings()

	{

	iReplacedMappings.Close();

	}

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

// CPtiMappings::FindReplacedMapping

// 

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

// 

TInt CPtiMappings::FindReplacedMapping(TPtiKey aKey, TPtiTextCase aCase,

                                       TPtiEngineInputMode aMode) const

	{

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

		{

		if (iReplacedMappings[i].iKey == aKey &&

		    iReplacedMappings[i].iCase == aCase &&

		    iReplacedMappings[i].iMode == aMode &&

		    iReplacedMappings[i].iKeyboardType == iKeyboardType)

			{

			return i;

			}		

		}

	return KErrNotFound;

	}

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

// CPtiMappings::ReplaceKeyMapLocalL

// 

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

// 

void CPtiMappings::ReplaceKeyMapLocalL(TPtiKey aKey, TDesC& aMap, 

                                       TPtiTextCase aCase, TPtiEngineInputMode aMode)

	{

	TInt i = FindReplacedMapping(aKey, aCase, aMode);

	if (i != KErrNotFound)	

		{

		iReplacedMappings.Remove(i);

		}

	TPtiReplacedMapping newMapping;

	newMapping.iKey = aKey;

	newMapping.iCase = aCase;

	newMapping.iMode = aMode;

	newMapping.iKeyboardType = iKeyboardType;

	for (i = 0; i < KMaxReplacedMappingCharacters && i < aMap.Length(); i++)	

		{

		newMapping.iChrs[i] = aMap[i];

		}

	newMapping.iNumChars = i;	

	User::LeaveIfError(iReplacedMappings.Append(newMapping));	

	}

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

// CPtiMappings::DataForKeyLocal

// 

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

// 	

TPtrC CPtiMappings::DataForKeyLocal(TPtiKey aKey, TPtiTextCase aCase, TPtiEngineInputMode aMode) const

	{

	__ASSERT_DEBUG(iKeyMapData, User::Panic(KPtiNoKeyMapDataPanic, KErrCorrupt));

	if ((aCase == EPtiCaseChrLower) && (iKeyboardType != EPtiKeyboardHalfQwerty))

		{

		aCase = EPtiCaseLower;		

		}

	else if ((aCase == EPtiCaseChrUpper) && (iKeyboardType != EPtiKeyboardHalfQwerty))

		{

		aCase = EPtiCaseUpper;		

		}

	TInt replaced = FindReplacedMapping(aKey, aCase, aMode);

	if (replaced != KErrNotFound)

		{		

		if (iReplacedMappings[replaced].iNumChars > 0)		

			{

			return TPtrC(iReplacedMappings[replaced].iChrs,

			             iReplacedMappings[replaced].iNumChars);  

			}

		return TPtrC();	

		}

    return iKeyMapData->DataForKey(iKeyboardType, aKey, aCase);	

	}	

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

// CPtiMappings::WriteData (DEPRECATED)

// 

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

// 	

TInt CPtiMappings::WriteData(TInt16*)   

	{

	return 0;

	}

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

// CPtiMappings::ChunkDataSize (DEPRECATED)

// 

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

// 	

TInt CPtiMappings::ChunkDataSize() const

	{

	return 0;		

	}

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

// CPtiMappings::KeyboardType

// 

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

//

EXPORT_C TPtiKeyboardType CPtiMappings::KeyboardType() const

    {

    return iKeyboardType;

    }	

//

// CPtiKeyMappings

//

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

// CPtiKeyMappings::NewL

// 

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

//

EXPORT_C CPtiKeyMappings* CPtiKeyMappings::NewL(TDesC& /*aData*/)

	{

	// DEPRECATED

	User::Leave(KErrNotSupported);

	return NULL;	

	}

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

// CPtiKeyMappings::NewL

// 

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

//

EXPORT_C CPtiKeyMappings* CPtiKeyMappings::NewL(TInt16* /*aData*/)

	{

	// DEPRECATED

	User::Leave(KErrNotSupported);

	return NULL;

	}

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

// CPtiKeyMappings::NewL

// 

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

//

EXPORT_C CPtiKeyMappings* CPtiKeyMappings::NewL(CPtiKeyMapData* aData)

	{

	CPtiKeyMappings* maps = new (ELeave) CPtiKeyMappings(aData);

	return maps; 	

	}

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

// CPtiKeyMappings::CPtiKeyMappings

// 

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

//

CPtiKeyMappings::CPtiKeyMappings()

	{

    iKeyboardType = EPtiKeyboard12Key;      

	}

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

// CPtiKeyMappings::CPtiKeyMappings

// 

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

//

CPtiKeyMappings::CPtiKeyMappings(CPtiKeyMapData* aData) : CPtiMappings(aData)

	{

    iKeyboardType = EPtiKeyboard12Key; 		

	}

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

// CPtiKeyMappings::~CPtiKeyMappings

// 

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

//

EXPORT_C CPtiKeyMappings::~CPtiKeyMappings()

	{

	}

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

// CPtiKeyMappings::StartMapping

// 

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

//

EXPORT_C TUint16 CPtiKeyMappings::StartMapping(TPtiKey aKey, TPtiTextCase aCase,

                                               TPtiEngineInputMode aMode)

	{

	__ASSERT_DEBUG(iKeyMapData, User::Panic(KPtiNoKeyMapDataPanic, KErrCorrupt));

	DeQwertyfyCaseValue(aCase);

	KeyCodeToInternal(aKey);

    iCurrentMode = aMode;

	iCurrentChar = 0;

	TPtrC keyData = DataForKeyLocal(aKey, aCase, iCurrentMode);	

	if (keyData.Length() > 0)

	    {

	    return keyData[0];	

	    }        

	return 0;

	}  

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

// CPtiKeyMappings::NextChar

// 

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

//

TUint16 CPtiKeyMappings::NextChar(TPtiTextCase aCase)

	{

	__ASSERT_DEBUG(iKeyMapData, User::Panic(KPtiNoKeyMapDataPanic, KErrCorrupt));

	iCurrentChar++;

	DeQwertyfyCaseValue(aCase);

	TPtrC keyData = DataForKeyLocal(iCurrentKey, aCase, iCurrentMode);

	if (iCurrentChar >= keyData.Length())

		{

		iCurrentChar = 0;

		}

	if (keyData.Length())

		{

		return keyData[iCurrentChar];

		}

	return 0;	

	}

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

// CPtiKeyMappings::ReplaceKeyMapL

// 

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

//

EXPORT_C TInt CPtiKeyMappings::ReplaceKeyMapL(TPtiKey aKey, TDesC& aMap,

                                              TPtiTextCase aCase)                                                                                            

	{

	if (iCurrentKey == aKey)

		{		

		iCurrentKey = EPtiKeyNone;

		iCurrentChar = 0;

		}	

	DeQwertyfyCaseValue(aCase);		

	ReplaceKeyMapLocalL(aKey, aMap, aCase, EPtiEngineMultitapping);

	return KErrNone;

	}

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

// CPtiKeyMappings::NextKey

// 

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

//	

EXPORT_C TUint16 CPtiKeyMappings::NextKey(TPtiKey aKey, TBool &aAppend,

                                          TPtiTextCase aCase)

	{

	if (CurrentKey() == aKey)

		{

		aAppend = EFalse;

		return NextChar(aCase);	

		}

	return StartMapping(aKey, aCase);

	}

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

// CPtiKeyMappings::KeyForCharacter

// 

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

//

EXPORT_C TPtiKey CPtiKeyMappings::KeyForCharacter(TUint16 aChar)

	{

	__ASSERT_DEBUG(iKeyMapData, User::Panic(KPtiNoKeyMapDataPanic, KErrCorrupt));

	TInt numBindItems = 0;

	const TPtiKeyBinding* bindings = iKeyMapData->KeyBindingTable(iKeyboardType, numBindItems);

    TInt dataSize = 0;

	const TUint16* mtData = iKeyMapData->KeyData(iKeyboardType, dataSize);  

	TPtiTextCase textCase;

	TPtiKey key;

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

		{

		key = iKeyMapData->KeyForBindingTableIndex(iKeyboardType, i, textCase);

		if (key != EPtiKeyNone)

			{

			TPtrC keyData = DataForKeyLocal(key, textCase, EPtiEngineMultitapping);

			if (keyData.Locate(aChar) != KErrNotFound)

				{

				return key;

				}			

			}

		}

	return EPtiKeyNone;	

	}

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

// CPtiKeyMappings::GetDataForKey

// 

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

//

EXPORT_C void CPtiKeyMappings::GetDataForKey(TPtiKey aKey, TDes& aResult, 

                                             TPtiTextCase aCase)

	{

	__ASSERT_DEBUG(iKeyMapData, User::Panic(KPtiNoKeyMapDataPanic, KErrCorrupt));

	DeQwertyfyCaseValue(aCase);

	aResult.Copy(DataForKeyLocal(aKey, aCase, EPtiEngineMultitapping).Left(aResult.MaxLength()));	

	}

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

// CPtiKeyMappings::GetAll

// 

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

//

TPtrC CPtiKeyMappings::GetAll(TPtiTextCase aCase)

	{

	__ASSERT_DEBUG(iKeyMapData, User::Panic(KPtiNoKeyMapDataPanic, KErrCorrupt));

	DeQwertyfyCaseValue(aCase);	

	TPtrC keyData = DataForKeyLocal(iCurrentKey, aCase, EPtiEngineMultitapping);	

	if (keyData.Length() > 1)	

		{

		// Return characters excluding the control char.

		return keyData.Mid(1);		

		}

	return TPtrC();	

	}

//

// CPtiHalfQwertyKeyMappings

// 

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

// CPtiHalfQwertyKeyMappings::NewL

// 

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

//

EXPORT_C CPtiHalfQwertyKeyMappings* CPtiHalfQwertyKeyMappings::NewL(CPtiKeyMapData* aData)

    {

    CPtiHalfQwertyKeyMappings* maps = new (ELeave) CPtiHalfQwertyKeyMappings(aData);

	return maps;  

    }

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

// CPtiHalfQwertyKeyMappings::::CPtiHalfQwertyKeyMappings

// 

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

//

CPtiHalfQwertyKeyMappings::CPtiHalfQwertyKeyMappings(CPtiKeyMapData* aData) : CPtiKeyMappings(aData)

    { 

    iKeyboardType = EPtiKeyboardHalfQwerty;      

    }

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

// CPtiHalfQwertyKeyMappings::~CPtiHalfQwertyKeyMappings

// 

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

//	    

EXPORT_C CPtiHalfQwertyKeyMappings::~CPtiHalfQwertyKeyMappings()

    {    

    }

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

// CPtiHalfQwertyKeyMappings::StartMapping

// 

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

//

EXPORT_C TUint16 CPtiHalfQwertyKeyMappings::StartMapping(TPtiKey aKey, TPtiTextCase aCase,

                                               TPtiEngineInputMode aMode)

	{

	__ASSERT_DEBUG(iKeyMapData, User::Panic(KPtiNoKeyMapDataPanic, KErrCorrupt));

	//DeQwertyfyCaseValue(aCase);

	KeyCodeToInternal(aKey);

    iCurrentMode = aMode;

	iCurrentChar = 0;

	TPtrC keyData = DataForKeyLocal(aKey, aCase, iCurrentMode);	

	if (keyData.Length() > 0)

	    {

	    return keyData[0];	

	    }        

	return 0;

	}

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

// CPtiHalfQwertyKeyMappings::NextKey

// 

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

// 

EXPORT_C TUint16 CPtiHalfQwertyKeyMappings::NextKey(TPtiKey aKey, TBool &aAppend,

                                                TPtiTextCase aCase)

	{

	if (CurrentKey() == aKey)

		{

		aAppend = EFalse;

		return NextChar(aCase);	

		}

	return StartMapping(aKey, aCase);

	}

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

// TUint16 CPtiHalfQwertyKeyMappings::NextChar(TPtiTextCase aCase)

// 

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

//        

TUint16 CPtiHalfQwertyKeyMappings::NextChar(TPtiTextCase aCase)

	{

	__ASSERT_DEBUG(iKeyMapData, User::Panic(KPtiNoKeyMapDataPanic, KErrCorrupt));

	iCurrentChar++;

	// we want to retain chr cases in half qwerty

	//DeQwertyfyCaseValue(aCase);

	TPtrC keyData = DataForKeyLocal(iCurrentKey, aCase, iCurrentMode);

	if (iCurrentChar >= keyData.Length())

		{

		iCurrentChar = 0;

		}

	if (keyData.Length())

		{

		return keyData[iCurrentChar];

		}

	return 0;	

	}