--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extras/calcsoft/src/CalcHistory.cpp	Mon Jan 18 20:20:33 2010 +0200
@@ -0,0 +1,134 @@
+/*
+* Copyright (c) 2002 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:  Define CCalcHistory class. This class is handled historical 
+*                line of the calculator. 
+*
+*/
+
+
+
+// INCLUDE FILES
+#include "CalcEditline.h" 
+#include "CalcHistory.h" 
+
+//  LOCAL CONSTANTS AND MACROS  
+
+
+// ================= MEMBER FUNCTIONS =======================
+
+// C++ default constructor can NOT contain any code, that
+// might leave.
+//
+CCalcHistory::CCalcHistory():
+              iNewestIndex(KCalcMaxHistoryLines - 1)
+    {
+    iHistory[iNewestIndex].AllClear();
+    }
+
+// Destructor
+CCalcHistory::~CCalcHistory()
+    {
+    }
+
+
+
+// Assignment operator
+// This inplementation depends on how to have history data. 
+// Refer to description of member data, CCalcHistory.h 
+// 
+const TCalcEditLine& CCalcHistory::operator[]
+                       (TInt aIndex) // Get (aIndex + 1)th latest history line 
+    {
+    TInt lineIndex(iNewestIndex - aIndex);
+    
+    if ( lineIndex < 0 )
+        {
+        lineIndex += KCalcMaxHistoryLines;
+        }
+        
+    return iHistory[lineIndex];      
+    }
+
+// ---------------------------------------------------------
+// CCalcHistory::Count
+// Return count of histoical lines.
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+TInt CCalcHistory::Count() const     
+    {
+    return iCount;
+    }
+
+// ---------------------------------------------------------
+// CCalcHistory::Add
+// This inplementation depends on how to have history data. 
+// Refer to description of member data, CCalcHistory.h 
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+void CCalcHistory::Add
+                (const TCalcEditLine aLine) 
+    {
+    if ( iNewestIndex == (KCalcMaxHistoryLines - 1) )
+        {
+        iNewestIndex = 0;
+        }
+    else
+        {
+        iNewestIndex++;
+        }
+    
+    if ( iCount < KCalcMaxHistoryLines )
+        {
+        iCount++;
+        }
+    
+    iHistory[iNewestIndex] = aLine;
+    }
+
+// ---------------------------------------------------------
+// CCalcHistory::ClearHistory
+// Clear calculation history.
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+void CCalcHistory::ClearHistory()
+    {
+    iCount = 0;
+    iNewestIndex = KCalcMaxHistoryLines - 1;
+    for (TInt cnt(0); cnt < KCalcMaxHistoryLines; cnt++)
+        {
+        iHistory[cnt].AllClear();
+        }
+    }
+
+
+// ---------------------------------------------------------
+// CCalcHistory::NotifyChangeDecimal
+// Call when decimal separator is changed.
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+void CCalcHistory::NotifyChangeDecimal(TChar aOld, TChar aNew)
+    {
+    for (TInt cnt(0); cnt < iCount; cnt++)
+        {
+        iHistory[cnt].ChangeDecimal(aOld, aNew);
+        }
+    }
+        
+
+
+// End of File