// Copyright (c) 1997-2009 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:

//

// This module contains all the main logic connected with movement and selection in CGridImg.

//

#include "GRDSTD.H"

#include "GRDPANIC.H"

#if !defined(__WINC__)

#include <w32std.h>

#endif

GLREF_C void CleanupGc(TAny* aObject);

void CGridImg::DrawCursorOrRegionL(TUint aMoveFlags)

	{

	//

	// Does the appropriate operation on the cursor given the conditions in the parameters

	//

	if (iGridLay->IsRowPermanentlySelected())

		aMoveFlags|=EIsRowSelected;

	RRegion oldRegion;

	CleanupClose<RRegion>::PushL(oldRegion);

	AppendTotalHighlightRegionL(oldRegion);

	TInt oldCursorRow=iCursorPos.iRow;

	TInt selectCount=iSelected->Count();

	if (selectCount)

		{

		if (aMoveFlags&EIsWithSelect)

			{

			if (aMoveFlags&EIsAtBoundary)

				iNewCursorPos = iCursorPos;

			else 

				UpdateSelectedRegion(selectCount,aMoveFlags);

			}

		else

			{

			if (aMoveFlags&EIsWithControl)

				{

				if (aMoveFlags&(EIsRowSelected|EIsColumnSelected))

					AddLabelToRegionL(aMoveFlags);

				else

					{

					iAnchorPos=iCursorPos=iNewCursorPos;

					StartSelectedRegionL(aMoveFlags);

					}

				}

			else

				{

 				iSelected->Reset();

				if ((aMoveFlags&(EIsRowSelected|EIsColumnSelected)) && (!(aMoveFlags&EIsAtBoundary)

					|| iGridLay->IsRowPermanentlySelected()))

					{

					AddLabelToRegionL(aMoveFlags);

					}

				else

					{

					if (aMoveFlags&EIsAtBoundary)

						iNewCursorPos=iCursorPos=iAnchorPos;

					else

						iCursorPos=iNewCursorPos;

					}

				}

			}

		}

	else

		{

		if (aMoveFlags&EIsAtBoundary)

			iNewCursorPos = iCursorPos;

		else

			{

			if (aMoveFlags&(EIsWithSelect|EIsWithControl))

				{

				if (aMoveFlags&EIsWithSelect)

					StartSelectedRegionL(aMoveFlags);

				else

					{

					if (aMoveFlags&(EIsRowSelected|EIsColumnSelected))

						AddLabelToRegionL(aMoveFlags);

					else

						{

						iAnchorPos=iCursorPos=iNewCursorPos;

						StartSelectedRegionL(aMoveFlags);

						}

					}

				}

			else

				{

				if (aMoveFlags&(EIsRowSelected|EIsColumnSelected))

					AddLabelToRegionL(aMoveFlags);

				else

					iCursorPos = iNewCursorPos;

				}

			}

		}

	if (iCursorPos.iRow!=oldCursorRow || aMoveFlags&EIsColumnSelected)

		{

		RemoveRowLabelFromRegionL(oldCursorRow,oldRegion);

		RemoveRowLabelFromRegionL(iCursorPos.iRow,oldRegion);

#if !defined(__WINC__)

		CreateGc(iGc);

		CleanupStack::PushL(TCleanupItem(CleanupGc,this));

		DrawSideGridLabelIfOnScreenL(oldCursorRow);

		DrawSideGridLabelIfOnScreenL(iCursorPos.iRow);

		CleanupStack::PopAndDestroy();	// gc cleanup

#endif

		}

	HighlightNewRegionFromOldL(oldRegion);

	CleanupStack::PopAndDestroy();	// oldRegion

	}

void CGridImg::UpdateSelectedRegion(TInt aSelectCount,TUint aMoveFlags)

	{

	//

	// Updates the latest selected region in accordance with the passed parameters.

	//

	__ASSERT_DEBUG(aSelectCount>0,Panic(ECellRegionNothingSelected));

	TRangeRef range = (*iSelected)[aSelectCount-1];

	TRangeRef bounds(iGridLay->GridRange());

	if (aMoveFlags&EIsAbsoluteMove)

		{

		if (((aMoveFlags&(EIsColumnSelected|EIsRowSelected|EIsWithDrag))==EIsColumnSelected)

			|| (iSelected->IsColSelectedLastIndex(iCursorPos.iCol) && (aMoveFlags&EIsWithDrag)

			&& !iSelected->IsRowSelectedLastIndex(iCursorPos.iRow)))

			{

			iGridLay->LimitCell(iNewCursorPos);

			range.iFrom.iCol = Min(iAnchorPos.iCol, iNewCursorPos.iCol);

			range.iTo.iCol = Max(iAnchorPos.iCol, iNewCursorPos.iCol);

			range.iFrom.iRow = bounds.iFrom.iRow;

			range.iTo.iRow = bounds.iTo.iRow;

			iCursorPos.iCol = iNewCursorPos.iCol;

			iNewCursorPos.iRow = iCursorPos.iRow;

			}

		else if (((aMoveFlags&(EIsRowSelected|EIsColumnSelected|EIsWithDrag))==EIsRowSelected)

			|| (iSelected->IsRowSelectedLastIndex(iCursorPos.iRow) && (aMoveFlags&EIsWithDrag)

			&& !iSelected->IsColSelectedLastIndex(iCursorPos.iCol)))

			{

			iGridLay->LimitCell(iNewCursorPos);

			range.iFrom.iRow = Min(iAnchorPos.iRow, iNewCursorPos.iRow);

			range.iTo.iRow = Max(iAnchorPos.iRow, iNewCursorPos.iRow);

			range.iFrom.iCol = bounds.iFrom.iCol;

			range.iTo.iCol = bounds.iTo.iCol;

			iCursorPos.iRow = iNewCursorPos.iRow;

			iNewCursorPos.iCol = iCursorPos.iCol;

			}

		else if ((aMoveFlags&(EIsRowSelected|EIsColumnSelected|EIsWithDrag))==

			(EIsRowSelected|EIsColumnSelected))

			{

			range = bounds;

			iNewCursorPos = iCursorPos = bounds.iTo;

			}

		else if (!(iSelected->IsRangeSelectedLastIndex(iGridLay->GridRange()) &&

			(aMoveFlags&EIsWithDrag)))

			{

			iGridLay->LimitCell(iNewCursorPos);

 			range.iFrom.iCol = Min(iAnchorPos.iCol, iNewCursorPos.iCol);

			range.iTo.iCol = Max(iAnchorPos.iCol, iNewCursorPos.iCol);

   			range.iFrom.iRow = Min(iAnchorPos.iRow, iNewCursorPos.iRow);

			range.iTo.iRow = Max(iAnchorPos.iRow, iNewCursorPos.iRow);

			iCursorPos = iNewCursorPos;

			}

		}

	else

		{

		if (iNewCursorPos.iRow != iCursorPos.iRow)

			{

 			range.iFrom.iRow = Min(iAnchorPos.iRow, iNewCursorPos.iRow);

			range.iTo.iRow = Max(iAnchorPos.iRow, iNewCursorPos.iRow);

			iCursorPos.iRow = iNewCursorPos.iRow;

			}

		if (iNewCursorPos.iCol != iCursorPos.iCol && !iGridLay->IsRowPermanentlySelected())

			{

 			range.iFrom.iCol = Min(iAnchorPos.iCol, iNewCursorPos.iCol);

			range.iTo.iCol = Max(iAnchorPos.iCol, iNewCursorPos.iCol);

			iCursorPos.iCol = iNewCursorPos.iCol;

			}

		}

	iSelected->SetLastCellRange(range);

	}

void CGridImg::AddLabelToRegionL(TUint aMoveFlags)

	{

	//

	// Adds an entire row/column/grid to the selected region 

	// depending on iNewCursorPos

	//

	if ((aMoveFlags&(EIsRowSelected|EIsColumnSelected))==(EIsRowSelected|EIsColumnSelected))

		{

		TRangeRef gridRange=iGridLay->GridRange();

		iSelected->AddCellRangeL(gridRange);

		iAnchorPos.iRow=(iGridLay->IsHorizontalTitleLine()) ? iGridLay->TitleRange().iFrom.iRow

			: iGridLay->VisibleRange().iFrom.iRow;

		iAnchorPos.iCol=(iGridLay->IsVerticalTitleLine()) ? iGridLay->TitleRange().iFrom.iCol

			: iGridLay->VisibleRange().iFrom.iCol;

		iCursorPos=iNewCursorPos=iGridLay->GridRange().iTo;

		}

	else if (aMoveFlags&EIsColumnSelected)

		{

		iSelected->AddColL(iNewCursorPos.iCol);

		iAnchorPos.iCol = iCursorPos.iCol = iNewCursorPos.iCol;

		iAnchorPos.iRow=(iGridLay->IsHorizontalTitleLine()) ? iGridLay->TitleRange().iFrom.iRow

			: iGridLay->VisibleRange().iFrom.iRow;

		iCursorPos.iRow = iNewCursorPos.iRow = iGridLay->GridRange().iTo.iRow;

		}

	else if (aMoveFlags&EIsRowSelected)

		{

		iSelected->AddRowL(iNewCursorPos.iRow);

		iAnchorPos.iRow = iCursorPos.iRow = iNewCursorPos.iRow;

		iAnchorPos.iCol=(iGridLay->IsVerticalTitleLine()) ? iGridLay->TitleRange().iFrom.iCol

			: iGridLay->VisibleRange().iFrom.iCol;

		iCursorPos.iCol = iNewCursorPos.iCol = iGridLay->GridRange().iTo.iCol;

		}

	}

void CGridImg::StartSelectedRegionL(TUint aMoveFlags)

	{

	//

	// Sets the anchor to the current cursor position and selects the region between

	// the anchor and the new cursor position

	//

	if (aMoveFlags&(EIsRowSelected|EIsColumnSelected) && (aMoveFlags&EIsWithDrag))

		return;

	iAnchorPos = iCursorPos;

	iCursorPos = iNewCursorPos;

	TRangeRef range;

	if ((aMoveFlags&EIsColumnSelected) && (aMoveFlags&EIsRowSelected))

		range = iGridLay->GridRange();

	else

		{

		range.iFrom.iRow = Min(iAnchorPos.iRow, iNewCursorPos.iRow);

		range.iTo.iRow = Max(iAnchorPos.iRow, iNewCursorPos.iRow);

		range.iFrom.iCol = Min(iAnchorPos.iCol, iNewCursorPos.iCol);

		range.iTo.iCol = Max(iAnchorPos.iCol, iNewCursorPos.iCol);

		if (aMoveFlags&EIsRowSelected)

			{

			TRangeRef gridRange=iGridLay->GridRange();

			range.iFrom.iCol = gridRange.iFrom.iCol;

			range.iTo.iCol = gridRange.iTo.iCol;

			}

		if (aMoveFlags&EIsColumnSelected)

			{

			TRangeRef gridRange=iGridLay->GridRange();

	   		range.iFrom.iRow = gridRange.iFrom.iRow;

			range.iTo.iRow = gridRange.iTo.iRow;

			}

		}

	iSelected->AddCellRangeL(range);

	}