--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/extras/calcsoft/inc/CalcDoc.h Wed Sep 01 12:29:54 2010 +0100
@@ -0,0 +1,233 @@
+/*
+* 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: Document class, CCalcDocument
+* Derived from CEikDocument
+* The history of inputted data is held.
+* The memory of four-arithmetical-operations operation
+* or a calculation result is held.
+* The last result and memory are saved at a file and
+* it restores.
+*
+*/
+
+
+#ifndef CALCDOC_H
+#define CALCDOC_H
+
+
+// INCLUDES
+#include <eikdoc.h>
+
+#include "CalcEditline.h"
+
+#include "CalcView.h"
+// CONSTANTS
+const TInt KCalcErrEditorSpaceFull(-10000);
+
+// FORWARD DECLARATIONS
+
+class CEikAppUi;
+class CCalcHistory;
+class CCalcAppEnv;
+
+// CLASS DEFINITIONS
+
+/**
+CCalcDocument : 'Document' class
+*/
+class CCalcDocument
+ :public CEikDocument
+ {
+ public: // Constructors and destructor
+ /**
+ * Two-phased constructor.
+ * @param aApp : Reference of CEikApplication class
+ */
+ static CCalcDocument* NewL(CEikApplication& aApp);
+
+ /**
+ * Destructor.
+ */
+ virtual ~CCalcDocument();
+
+
+ public: // New functions
+ /**
+ * Set the pointer to CalcAppEnv.
+ */
+ void SetAppEnv(CCalcAppEnv* aCalcAppEnv);
+
+ /**
+ * Set the pointer to CalcAppEnv.
+ */
+ void SetCalcView( CCalcView* aCCalcView );
+
+ /**
+ * Make calculation, and add result to calcluation history.
+ * Leave may occur, causes KErrOverflow or KErrDivideByZero or KErrNotSupported (negative value with square root).
+ * @param aOperand : operand.
+ * @param aLine : inputted edit line
+ * @return TReal64: Provisional result.
+ */
+ TReal64 CalculateAndAddHistoryL(
+ TReal64 aOperand,
+ const TCalcEditLine& aLine);
+
+ /**
+ * Make calculation, nothing is added to the calculation history.
+ * Leave may occur, causes KErrOverflow or KErrDivideByZero or KErrNotSupported (negative value with square root).
+ * @param aOperand : operand.
+ * @param aLine : inputted edit line
+ * @return TReal64: Provisional result.
+ */
+ TReal64 CalculateAndNoHistoryL(
+ TReal64 aOperand,
+ const TCalcEditLine& aLine);
+
+ /**
+ * Make calculation, and modify the operator
+ * before adding anything to the calculation history.
+ * Leave may occur, causes KErrOverflow or KErrDivideByZero or KErrNotSupported (negative value with square root).
+ * @param aOperand : operand.
+ * @param aLine : inputted edit line
+ * @return TReal64: Provisional result.
+ */
+ TReal64 CalculateAndModifyHistoryL(
+ TReal64 aOperand,
+ TCalcEditLine& aLine,
+ TCalcEditLine::TCalcOperatorType aOperator);
+
+ /**
+ * Add a line which is "= (provisional result)" to calculation history.
+ * And Last Result is updated to provisional result
+ */
+ void AddEqualLineAndUpdateLastResultL();
+
+ /**
+ * Empty line is added to calculation history.
+ */
+ void AddEmptyLine();
+
+ /**
+ * Memory is saved.
+ * @param aNewMemory : New memory, current operand.
+ */
+ void MemorySaveL(TReal64 aNewMemory);
+
+ /**
+ * Memory is saved.
+ * @param aLine : Current value of editor
+ */
+ TBool HasMemory() const;
+
+ /**
+ * Return current memory.
+ * @return TReal64 : current memory.
+ */
+ TReal64 Memory() const;
+
+ /**
+ * Clear memory.
+ */
+ void MemoryClearL();
+
+ /**
+ * Return last result
+ * @param TReal64 : Last result.
+ */
+ TReal64 LastResult() const;
+
+ /**
+ * Return provisional result
+ * @param aLine : For getting provisional result.
+ */
+ TReal64 ProvisionalResult() const;
+
+ /**
+ * Return pointer of CCalcHistory class.
+ * @return Pointer of CCalcHistory class
+ */
+ CCalcHistory* History() const;
+
+ /**
+ * Restore memory and last result
+ */
+ void LoadStateL();
+
+ /**
+ * Store memory and last result
+ */
+ void SaveStateL();
+
+ private: // New functions
+ /**
+ * By default constructor is private.
+ * @param aApp: Reference of CEikApplication class
+ */
+ CCalcDocument(CEikApplication& aApp);
+
+ /**
+ * Second-phase constructor
+ */
+ void ConstructL();
+
+ /**
+ * Make calculation by using argument aLine
+ * Leave may occur, causes KErrOverflow or KErrDivideByZero.
+ * @param aOperand : operand
+ * @param aOperator : Operator type enum.
+ * @return Result of calculation
+ */
+ TReal64 CalculateL(TReal64 aOperand,
+ TCalcEditLine::TCalcOperatorType aOperator);
+
+ /**
+ * Check overflow and underflow
+ * Leave may occur, causes KErrOverflow
+ * @param aResult : result of calculation
+ */
+ void CheckResultL(TReal64* aResult);
+
+ /**
+ * Write last result and memory to document file.
+ * @param aStream : Interface of write steam
+ */
+ void ExternalizeL(RWriteStream& aStream) const;
+
+ /**
+ * Read last result and memory from document file.
+ * @param aStream : Interface of read steam
+ */
+ void InternalizeL(RReadStream& aStream);
+
+
+ private: // Functions from base classes
+ /**
+ * From CEikDocument : Create CCalcAppUi object
+ */
+ CEikAppUi* CreateAppUiL();
+
+ private: // Data
+ CCalcAppEnv* iCalcAppEnv; // Not own
+ TReal64 iProvisionalResult; // Provisional result
+ TReal64 iMemory; // Memory
+ TReal64 iLastResult; // Last result
+ CCalcHistory* iHistory; // History
+ CCalcView* iCCalcView; // Not own
+ };
+
+#endif // CALCDOC_H
+
+// End of File
+