/*

* Copyright (c) 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 <aknedsts.h>

#include <aknedformaccessor.h>

#include <coecntrl.h>

#include <coemop.h>

#include <frmtlay.h>

#include <frmtview.h>

#include <tagma.h>

#include "akncursormanager.h"

CAknCursorManager* CAknCursorManager::NewL(CAknEdwinState* aEdwinState)

	{

	CAknCursorManager* self = new (ELeave) CAknCursorManager(aEdwinState);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop();

	return self;

	}

CAknCursorManager::~CAknCursorManager()

	{

	}

TTmDocPosSpec CAknCursorManager::DocPos() const

	{

	TTmDocPosSpec docPos = TTmDocPosSpec();

	if (TextView())

		{

		TTmDocPos rawDocPos;

		TextView()->GetCursorPos(rawDocPos);

		docPos.iPos = rawDocPos.iPos;

		TTmDocPosSpec::TType docPosType = rawDocPos.iLeadingEdge ? TTmDocPosSpec::ELeading : TTmDocPosSpec::ETrailing;

		docPos.iType = docPosType;

		}

	return docPos;

	}

void CAknCursorManager::SetDocPosL(const TTmDocPosSpec& aDocPos)

	{

	if (TextView())

		TextView()->SetDocPosL(aDocPos);

	}

TBool CAknCursorManager::IsRightToLeftParagraph(TTmDocPosSpec aPos)

	{

	TTmPosInfo2 posInfo;

	TTmLineInfo lineInfo;

	TextLayout()->TagmaTextLayout().FindDocPos(aPos, posInfo, lineInfo);

	return lineInfo.iFlags & TTmLineInfo::EParRightToLeft;

	}

TBool CAknCursorManager::VisualCursorBetweenOpposingChunks()

	{

	TTmDocPosSpec pos = DocPos();

	CTmTextLayout::TTmChunkDescription leftChunk;

	CTmTextLayout::TTmChunkDescription rightChunk;

	TextLayout()->TagmaTextLayout().FindAdjacentChunks(pos, leftChunk, rightChunk);

	if (leftChunk.iRightToLeft != rightChunk.iRightToLeft)

		return ETrue;

	return EFalse;

	}

void CAknCursorManager::ToggleVisualDocPosL()

	{

	TTmDocPosSpec pos = DocPos();

	pos.iType = (pos.iType == TTmDocPosSpec::ETrailing) ? TTmDocPosSpec::ELeading : TTmDocPosSpec::ETrailing;

	TextView()->SetDocPosL(pos);

	}

void CAknCursorManager::ToggleLogicalDocPosL()

	{

	TTmDocPosSpec pos = DocPos();

	CTmTextLayout::TTmChunkDescription leftChunk;

	CTmTextLayout::TTmChunkDescription rightChunk;

	TextLayout()->TagmaTextLayout().FindAdjacentChunks(pos, leftChunk, rightChunk);

	TBool MoveToLeftChunk = EFalse;

	TBool MoveToRightChunk = EFalse;

	if ((!leftChunk.iRightToLeft && pos.iPos == leftChunk.iEnd) ||

		(leftChunk.iRightToLeft && pos.iPos == leftChunk.iStart))

		MoveToRightChunk = ETrue;

	else if ((!rightChunk.iRightToLeft && pos.iPos == rightChunk.iStart) ||

			 (rightChunk.iRightToLeft && pos.iPos == rightChunk.iEnd))

		MoveToLeftChunk = ETrue;

	TBool toggleLeadingTrailing = EFalse;

	if (leftChunk.iRightToLeft == rightChunk.iRightToLeft)

		toggleLeadingTrailing = ETrue;

	if (MoveToLeftChunk)

		{

		if (toggleLeadingTrailing)

			pos.iType = (pos.iType == TTmDocPosSpec::ETrailing) ? TTmDocPosSpec::ELeading : TTmDocPosSpec::ETrailing;

		if (!leftChunk.iRightToLeft) // LTR

			pos.iPos = leftChunk.iEnd;

		else //RTL

			pos.iPos = leftChunk.iStart;

		}

	else if (MoveToRightChunk)

		{

		if (toggleLeadingTrailing)

			pos.iType = (pos.iType == TTmDocPosSpec::ETrailing) ? TTmDocPosSpec::ELeading : TTmDocPosSpec::ETrailing;

		if (!rightChunk.iRightToLeft) // LTR

			pos.iPos = rightChunk.iStart;

		else //RTL

			pos.iPos = rightChunk.iEnd;

		}

	TextView()->SetDocPosL(pos);

	}

CAknCursorManager::CAknCursorManager(CAknEdwinState* aEdwinState) :

	iEdwinState(aEdwinState)

	{

	}

void CAknCursorManager::ConstructL()

	{

	}

CAknEdwinFormAccessor* CAknCursorManager::FormAccessor() const

	{

	return iEdwinState->FormAccessor();

	}

CTextLayout* CAknCursorManager::TextLayout() const

	{

	CAknEdwinFormAccessor* formAccessor = FormAccessor();

	if (formAccessor)

		return formAccessor->GetTextLayout();

	return NULL;

	}

CTextView* CAknCursorManager::TextView() const

	{

	CAknEdwinFormAccessor* formAccessor = FormAccessor();

	if (formAccessor)

		return formAccessor->GetTextView();

	return NULL;

	}