--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uifw/EikStd/coctlsrc/FormCursorModifier.cpp	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,212 @@
+/*
+* 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 <eikedwin.h>
+#include <tagma.h>
+#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
+#include <tagmaLayoutAndSource.h>
+#endif
+
+
+#include <frmtlay.h>
+#include <frmtview.h>
+#include <txtrich.h>
+
+#include "FormCursorModifier.h"
+#include "FromCursorModifierUtils.h"
+
+CFormCursorModifier* CFormCursorModifier::NewL(CTextView* aTextView, CTextLayout* aTextLayout)
+	{
+	CFormCursorModifier* self = new (ELeave) CFormCursorModifier(aTextView, aTextLayout);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop();
+	return self;
+	}
+
+CFormCursorModifier::~CFormCursorModifier()
+	{
+	}
+
+void CFormCursorModifier::HandleFormCursorModifierEventL(TFormCursorModifierEvent aEvent, TInt aData1, TAny* aData2)
+	{
+	switch (aEvent)
+		{
+		case EEventNull:
+			break;
+		case EEventInitialiseEditor:
+			if (iTextLayout)
+				{
+				if (iTextLayout->DocumentLength() == 0 && aData2) // Added aData2 check. It is NULL when whole text is selected and cut operation is made.
+					InitialiseCursorPositionL(static_cast<CEikEdwin*>(aData2));
+				}
+			break;
+		case EEventInlineEditUpdate:
+			break;
+		case EEventInsertion:
+			break;
+		case EEventDeletion:
+			if (iTextLayout)
+				{
+				if (iTextLayout->DocumentLength() == 0)
+					InitialiseCursorPositionL(static_cast<CEikEdwin*>(aData2));
+				else
+					NormaliseCursorPositionFollowingDeleteL();
+				}
+			break;
+		case EEventNavigation:
+			if (iTextLayout && aData1 == 0) // aData1 is selection length
+				NormaliseCursorPositionFollowingNavigationL();
+			break;
+		case EEventInputDirectionIsLeftToRight:
+			SetDirectionality(ELeftToRight);
+			break;			
+		case EEventInputDirectionIsRightToLeft:
+			SetDirectionality(ERightToLeft);
+			break;
+		default:
+			// as yet undefined enumerations should be handled gracefully
+			// here - this must not panic
+			break;
+		}
+	}
+
+void CFormCursorModifier::SetTextView(CTextView* aTextView)
+	{
+	iTextView = aTextView;
+	}
+	
+void CFormCursorModifier::SetTextLayout(CTextLayout* aTextLayout)
+	{
+	iTextLayout = aTextLayout;
+	}
+
+CFormCursorModifier::CFormCursorModifier(CTextView* aTextView, CTextLayout* aTextLayout) :
+	iTextView(aTextView),
+	iTextLayout(aTextLayout),
+	iDirectionality(ELeftToRight)
+	{
+	}
+
+void CFormCursorModifier::ConstructL()
+	{
+	}
+
+void CFormCursorModifier::NormaliseCursorPositionFollowingDeleteL()
+	{
+	TFormCursorModifierUtils cursorModifierUtils(*iTextView, *iTextLayout);
+	TTmDocPosSpec pos = cursorModifierUtils.DocPos();
+
+	CTmTextLayout::TTmChunkDescription leftChunk;
+	CTmTextLayout::TTmChunkDescription rightChunk;
+	iTextLayout->TagmaTextLayout().FindAdjacentChunks(pos, leftChunk, rightChunk);
+
+	TBool isRTLPara = cursorModifierUtils.IsRightToLeftParagraph(pos);
+	if (isRTLPara && !rightChunk.iRightToLeft || !isRTLPara && leftChunk.iRightToLeft)
+		cursorModifierUtils.ToggleVisualDocPosL();	
+	}
+
+void CFormCursorModifier::NormaliseCursorPositionFollowingNavigationL()
+	{
+	TFormCursorModifierUtils cursorModifierUtils(*iTextView, *iTextLayout);
+
+	if (cursorModifierUtils.VisualCursorBetweenOpposingChunks())
+		{
+		TTmDocPosSpec pos = cursorModifierUtils.DocPos();
+		CTmTextLayout::TTmChunkDescription leftChunk;
+		CTmTextLayout::TTmChunkDescription rightChunk;
+		iTextLayout->TagmaTextLayout().FindAdjacentChunks(pos, leftChunk, rightChunk);
+
+		if (leftChunk.iStart == -1)
+			{ // left end of a line
+			if (rightChunk.iRightToLeft)
+				{ // set doc pos trailing at the end of the right chunk
+				pos.iType = TTmDocPosSpec::ETrailing;
+				pos.iPos = rightChunk.iEnd;
+				}
+			else // rightChunk is LTR
+				{ // set doc pos leading at start of right chunk
+				pos.iType = TTmDocPosSpec::ELeading;
+				pos.iPos = rightChunk.iStart;
+				}
+			}
+		else if (rightChunk.iStart == -1)
+			{ // right end of a line
+			if (leftChunk.iRightToLeft)
+				{ // set doc pos leading at start of left chunk
+				pos.iType = TTmDocPosSpec::ELeading;
+				pos.iPos = leftChunk.iStart;
+				}
+			else // leftChunk is LTR
+				{ // set doc pos trailing at the end of the left chunk
+				pos.iType = TTmDocPosSpec::ETrailing;
+				pos.iPos = leftChunk.iEnd;
+				}
+			}
+
+		else // middle of a line
+			{
+			if (iDirectionality == ERightToLeft)
+				{
+				if (rightChunk.iRightToLeft)
+					{ // set doc pos trailing at the end of the right chunk
+					pos.iType = TTmDocPosSpec::ETrailing;
+					pos.iPos = rightChunk.iEnd;
+					}
+				else // rightChunk is LTR
+					{ // set doc pos leading at start of left chunk
+					pos.iType = TTmDocPosSpec::ELeading;
+					pos.iPos = leftChunk.iStart;
+					}
+				}
+			else // direction is LTR
+				{
+				if (rightChunk.iRightToLeft)
+					{ // set doc pos trailing at the end of left chunk
+					pos.iType = TTmDocPosSpec::ETrailing;
+					pos.iPos = leftChunk.iEnd;
+					}
+				else // rightChunk is LTR
+					{ // set doc pos leading at the start of right chunk
+					pos.iType = TTmDocPosSpec::ELeading;
+					pos.iPos = rightChunk.iStart;
+					}
+				}
+			}
+		// set the doc position...
+		cursorModifierUtils.SetDocPosL(pos);
+		}
+	}
+
+void CFormCursorModifier::InitialiseCursorPositionL(CEikEdwin* aEdwin)
+	{
+	CRichText* rT = static_cast<CRichText*>(aEdwin->Text());
+	CParaFormat* paraF = CParaFormat::NewLC();
+	paraF->iLanguage = (iDirectionality == ELeftToRight) ? ELangEnglish : ELangArabic;
+	TParaFormatMask langMask;
+	langMask.SetAttrib(EAttParaLanguage);
+	rT->ApplyParaFormatL(paraF, langMask, 0, 1);
+	if (iTextView)
+		iTextView->HandleRangeFormatChangeL(TCursorSelection(0, iTextLayout->DocumentLength()), ETrue);
+
+	CleanupStack::PopAndDestroy(); // paraF
+	}
+
+
+void CFormCursorModifier::SetDirectionality(TDirectionality aDirectionality)
+	{
+	iDirectionality = aDirectionality;
+	}