extras/calcsoft/src/CalcView.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 15 Mar 2010 12:40:41 +0200
branchRCL_3
changeset 8 ebe992a85829
parent 0 3ee3dfdd8d69
child 16 99b535de1dda
permissions -rw-r--r--
Revision: 201009 Kit: 201010

/*
* 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:  CCalcView is a view class of Calculator application.
*                Base class of CCalcView is CAknView. 
*
*/



// INCLUDE FILES
#include <avkon.hrh>
#include <eikon.hrh>
#include <eikmenup.h>
#include <aknnotewrappers.h> 
#include <AiwServiceHandler.h>

#include <aknbutton.h>

#include <hlplch.h>   // For HlpLauncher 
#include <featmgr.h>      // Feature Manager

#include <Calcsoft.rsg>

#include "CalcView.h"
#include "CalcCont.h" 
#include "CalcEdit.h"
#include "CalcAppUi.h"
#include "CalcDoc.h"
#include "CalcHistory.h"
#include "CalcOutSheet.h"
#include "CalcFunc.h"
#include "CalcEnv.h"
#include "calc.hrh" 
#include "CalcEditline.h"

//#include    "CalcCmdBtn.h"

#include <layoutmetadata.cdl.h>
#include <AiwMenu.h>
#include <AiwCommon.h>


//  LOCAL CONSTANTS AND MACROS  


// ================= MEMBER FUNCTIONS =======================


// Two-phased constructor.
CCalcView* CCalcView::NewLC()
    {
    CCalcView* self = new (ELeave) CCalcView();
    CleanupStack::PushL(self);
    self->ConstructL();
    return self;
    }
  
  // default constructor can leave.
void CCalcView::ConstructL()
    {
    
    BaseConstructL(R_CALC_VIEW_INFO);
    
    iCalcDocument = STATIC_CAST(CCalcDocument*, AppUi()->Document());

    iCalcDocument->SetCalcView( this );
    CreateContainerL();
    iCalcDocument->LoadStateL();
   
    /******** Initialize the ServiceHandler in the ConstructL *****/
    
    iServiceHandler = CAiwServiceHandler::NewL();
    
    /***** Attach the Menu Items of the Calculator and also the Interest *****/
    
    iServiceHandler->AttachMenuL(R_CALC_POPUPMENU, R_AIWHELPAPP_INTEREST);
    
    this->iLastResultSetected = EFalse;
    }

// Destructor
CCalcView::~CCalcView()
    {
    delete iContainer;
      if(iServiceHandler)
      {
   		 delete iServiceHandler;
   		 iServiceHandler = NULL;
      }
     
 	}

// ---------------------------------------------------------
// CCalcView::State
// Return current state
// (other items were commented in a header).
// ---------------------------------------------------------
//
CCalcView::TStateNo CCalcView::State() const
    {
    return iState;
    }

// ----------------------------------------------------
// CCalcView::LatestInput
// Return type of latest input
// (other items were commented in a header).
// ----------------------------------------------------
//
CCalcView::TKindOfInput CCalcView::LatestInput() const
    {
    return iLatestInput;
    }

// ----------------------------------------------------
// CCalcView::UpdateState
// Update state by using kind of input
// (other items were commented in a header).
// ----------------------------------------------------
//
void CCalcView::UpdateState
        (const TKindOfInput& aKind)   
    {
    iLatestInput = aKind;
    
    switch (aKind)
       {
        case EOperand:
        case EMemoryRecall:
            {
            switch (iState)
                {
                case EInitialMode: 
                case ESelectResult:
                    iState = EOperandOnly;
                    break;
                case EOperandAndOperator:
                    iState = EOperandAndOperatorAndOperand;
                    break;
                default:
                    break;
                }
            break;
            }
		case EOperatorResult:
			{
			iState = EOperatorOnlyResult;
			break;
			}
        case EOperator:
            {
            iState = EOperandAndOperator;
            break;
            }
        case EEqual:
            {
            iState = ESelectResult;
            break;
            }
        case EMemorySave:
            {
            switch (iState)
                {
                case EOperandAndOperatorAndOperand:
                    iState = ESelectResult;
                    break;
                case ESelectResult:
                    iState = EOperandOnly;
                    break;
                default:
                    break;
                }
            break;
            }
        case EAllClear:
            {
            iState = EOperandOnly;
            break;
            }
        default:
            {
            break;
            }
        }
    }


// ----------------------------------------------------
// CCalcView::ErrorMsgL
// Display error message
// (other items were commented in a header).
// ----------------------------------------------------
//
void CCalcView::ErrorMsgL
        (TInt aErrorCode) 
    {
    TInt resourceId(0);

    switch (aErrorCode)
        {
        case KErrOverflow:
            {
            resourceId = R_CALC_ERROR_OUTOFRANGE;
            break;
            }
        case KErrDivideByZero:
            {
            resourceId = R_CALC_ERROR_DIVISIONBYZERO;

             // UpdateState( EOperator );
            break;
            }
		case KErrNotSupported:
			{
			resourceId = R_CALC_ERROR_NEGATIVEVALUESQRT;
			break;
			}
        default:
            {
            return;
            }
        }
    
	//Localisation of scalable UI.
	HBufC* message = iCoeEnv->AllocReadResourceLC(resourceId) ;
    CAknErrorNote* note = new (ELeave) CAknErrorNote();
    note->ExecuteLD(*message);
	CleanupStack::PopAndDestroy(message);
    
    }


// ----------------------------------------------------
// CCalcView::DynInitMainMenuPane
// Delete meaningless items from main menu.
// (other items were commented in a header).
// ----------------------------------------------------
//
void CCalcView::DynInitMainMenuPane    
              (CEikMenuPane* aMenuPane) 
    {
    
            

    switch (iState)
        {
        case ESelectResult:
            {
            aMenuPane->DeleteMenuItem(ECalcCmdLastResult);
            break;
            }
        case EInitialMode:
            {
            aMenuPane->DeleteMenuItem(ECalcCmdClearCalcAndHistory);
            break;
            }
        case EOperandOnly:
            {
            if (iCalcDocument->History()->Count() == 0)
                {
                aMenuPane->DeleteMenuItem(ECalcCmdClearCalcAndHistory);
                }
             if(iLastResultSetected)
             	{
                aMenuPane->DeleteMenuItem(ECalcCmdLastResult); 	
             	}
            break;
            }
        case EOperandAndOperator:
        case EOperandAndOperatorAndOperand:
             if(iLastResultSetected)
             	{
                aMenuPane->DeleteMenuItem(ECalcCmdLastResult); 	
             	}
            break; 	 
        default:
            {
            break;
            }
        }
    }                        


// ----------------------------------------------------
// CCalcView::DynInitMemoryMenuPane
// Delete meaningless items from menu of memory 
// (other items were commented in a header).
// ----------------------------------------------------
//
void CCalcView::DynInitMemoryMenuPane
        (CEikMenuPane* aMenuPane)
    {
    if (!iCalcDocument->HasMemory())
        {
        aMenuPane->DeleteMenuItem(ECalcCmdMemoryClear);
        }    
    }
    
// ---------------------------------------------------------
// CCalcView::NotifyChangeDecimal
// Call when decimal separator is changed.
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::NotifyChangeDecimal(TChar aOld, TChar aNew)
    {
    iContainer->NotifyChangeDecimal(aOld, aNew);
    }
    


// ---------------------------------------------------------
// CCalcView::HandleCommandL
// Handling command.
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::HandleCommandL
        ( TInt aCommand ) 
    {
    // Handle the command generated by:
    //   1. menu item selection
    //   2. short-cut key press
   
    switch ( aCommand )
        {
        case ECalcCmdResult:
            {
            HandleResultL();
            break;
            }
        case ECalcCmdAdd:
            {
            HandleOperatorL(TCalcEditLine::ECalcAdd);
            break;
            }
        case ECalcCmdSubtract:
            {
            HandleOperatorL(TCalcEditLine::ECalcSubtract);
            break;
            }
        case ECalcCmdMultiply:
            {
            HandleOperatorL(TCalcEditLine::ECalcMultiply);
            break;
            }
        case ECalcCmdDivide:
            {
            HandleOperatorL(TCalcEditLine::ECalcDivide);
            break;
            }
        case ECalcCmdChangeSign:
            {
            this->iLastResultSetected = EFalse;
            HandleChangeSignL();
            break;
            }
        case ECalcCmdLastResult:
            {
            HandleLastResultL();
            break;
            }
        case ECalcCmdPercent:
            {
			HandleOperatorL(TCalcEditLine::ECalcPercent);
			// The result is always is displayed
			// after the percent button is pressed.
            // But if there was a error in the calculation
            // this if will enable us to not call the
            // HandleResultL and thus making sure that
            // the state of the buttons is identical to the
            // situation before the calculation.
			if (iState == EOperatorOnlyResult)
                HandleResultL();
            break;
            }
        case ECalcCmdSqrt:
            {
			HandleOperatorL(TCalcEditLine::ECalcSqrt);
			// HandleResultL only if sqrt was pressed after single operand.
			if (iState == EOperatorOnlyResult)
				HandleResultL();
            break;
            }
        case ECalcCmdMemorySave:
            {
            HandleMemorySaveL();
            break;
            }
        case ECalcCmdMemoryRecall:
            {
            this->iLastResultSetected = EFalse;
            HandleMemoryRecallL();
            break;
            }
        case ECalcCmdMemoryClear:
            {
            HandleMemoryClearL();
            break;
            }
        case ECalcCmdScrollUp:
            {
            HandleScrollUp();
            break;
            }
        case ECalcCmdScrollDown:
            {
            HandleScrollDown();
            break;
            }
        case ECalcCmdClearCalcAndHistory:
            {
            DoClearCalcAndHistoryL();
            break;
            }
        case EAknSoftkeyExit:
        case EEikCmdExit:
            {
            STATIC_CAST(CCalcAppUi*, AppUi())->ExitCalculator();
            break;
            }
        case ECalcCmdHelp: 
            {
            if (FeatureManager::FeatureSupported( KFeatureIdHelp ))
                {
                HlpLauncher::LaunchHelpApplicationL(iEikonEnv->WsSession(), AppUi()->AppHelpContextL());
                }
            break;
            }
        case EAknSoftkeySelect:
        	{
        	iContainer->HandleMiddleSoftKey();
        	break;
        	}
        	
        //Below cases are possible only for Touch UI Layouts
        case ECalcCmdOne:
            {
            iContainer->SetOperatorFromTouchL(1);
            }
            break;
        case ECalcCmdTwo:
            {
            iContainer->SetOperatorFromTouchL(2);
            }
            break;
        case ECalcCmdThree:
            {
            iContainer->SetOperatorFromTouchL(3);
            }
            break;
        case ECalcCmdFour:
            {
            iContainer->SetOperatorFromTouchL(4);
            }
            break;
        case ECalcCmdFive:
            {
            iContainer->SetOperatorFromTouchL(5);
            }
            break;
        case ECalcCmdSix:
            {
            iContainer->SetOperatorFromTouchL(6);
            }
            break;
        case ECalcCmdSeven:
            {
            iContainer->SetOperatorFromTouchL(7);
            }
            break;
        
        case ECalcCmdEight:
            {
            iContainer->SetOperatorFromTouchL(8);
            }
            break;
        
        case ECalcCmdNine:
            {
            iContainer->SetOperatorFromTouchL(9);
            }
            break;
        
        case ECalcCmdZero:
            {
            iContainer->SetOperatorFromTouchL(0);
            }
            break;
            
        case ECalcCmdSeparator:
            {
            iContainer->SetSeparatorFromTouchL();
            }
            break;
        case ECalcCmdCancel:
            {
            TInt repeat( iContainer->FuncmapSubPane()->IsKeyLongPressed() );           
            iContainer->ClearInputKeyL( repeat );
            }
            break; 
            
    /****** If none of the cases handle the Aiw Help then it will come to the default case ****/
        default:
            {
		 		CArrayFix<TCoeHelpContext>* buf = AppUi()->AppHelpContextL();
		 		TCoeHelpContext& helpContext = buf->At(0); 		
 		  		TAiwVariant uidVariant;
		 		TAiwVariant contextVariant; 		
		 		uidVariant.Set(helpContext.iMajor); 		
		 		TAiwGenericParam uidParam(EGenericParamHelpItem, uidVariant); 				 		contextVariant.Set(helpContext.iContext); 		
		 		contextVariant.Set(helpContext.iContext); 		
		 		TAiwGenericParam contextParam(EGenericParamHelpItem, contextVariant); 	
		 		CAiwGenericParamList* list = CAiwGenericParamList::NewLC(); 		
		 		list->AppendL(uidParam);
		 		list->AppendL(contextParam); 
		 	    iServiceHandler->ExecuteMenuCmdL(aCommand,*list,iServiceHandler->OutParamListL()); 	
		 		CleanupStack::PopAndDestroy(list);
		 		delete buf;
		 		buf= NULL;
            break;
            }
        }
    }


// C++ default constructor can NOT contain any code, that
// might leave.
//
CCalcView::CCalcView():
           iState(EInitialMode),
           iLatestInput(EOperand)
    {
    }


// ---------------------------------------------------------
// CCalcView::CreateContainerL
// Create CCalcContainer class
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::CreateContainerL()
    {
    iContainer = CCalcContainer::NewL(this);
    
    iContainer->SetMopParent(this);
	    
    TRect mainPaneRect ;
    TRect statusPaneRect;
    
    if (Layout_Meta_Data::IsLandscapeOrientation())
      
      {
      
        AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane,mainPaneRect);
        AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EStatusPane,statusPaneRect);
        mainPaneRect.iTl= statusPaneRect.iTl;
      	
      }
      
      else
      
      {
      
        AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane,mainPaneRect);
        AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EStatusPane,statusPaneRect);
       
       mainPaneRect.iTl= statusPaneRect.iTl;
      	      		      		      	
      } 
    
	
	iContainer->SetRect(mainPaneRect);	
    iEditorSubPane = iContainer->EditorPane();
    iOutputSheet = iContainer->OutputSheet();
    }


// ---------------------------------------------------------
// CCalcView::HandleResultL
// Handle result command
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::HandleResultL()
    {
    if (!HandleEqualSubRoutineL())
        {
        iEditorSubPane->DrawNow();
        UpdateState(EEqual);
        iContainer->SetChangeSignEnableL();
		iContainer->SetSqrtEnableL();
        iContainer->ShowPercentButton(EFalse);
        iContainer->SetClearKeyEnable();             
        }
    }


// ---------------------------------------------------------
// CCalcView::HandleChangeSignL
// Handle ChangeSign command
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::HandleChangeSignL()
    {
    iEditorSubPane->DoChangeSignL(iState);        
    
    if (iState == CCalcView::EOperandAndOperator)
        {
        UpdateState(EMemoryRecall);
        }
    }

// ---------------------------------------------------------
// CCalcView::HandleLastResultL
// Handle LastResult command
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::HandleLastResultL()
    {
    iLastResultSetected = ETrue;
    //  Recall "LastResult", which is the answer based on latest "=" input.
    iEditorSubPane->DoMemoryRecallOrLastResult(
        iCalcDocument->LastResult(), iState);

    UpdateState(EMemoryRecall);
    if ( iState == EOperandOnly && 
         iEditorSubPane->EditLine().CheckZeroL() )
        {
        UpdateState(EAllClear);
        }
    iContainer->SetChangeSignEnableL();
	iContainer->SetSqrtEnableL();
    iContainer->SetClearKeyEnable(); 

    //highlighting the sign "%".
    if ( iState == EOperandAndOperatorAndOperand )
        {
        iContainer->SetPercentEnableL();
        }        
    }

// ---------------------------------------------------------
// CCalcView::HandleMemorySaveL
// Handle MemorySave command
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::HandleMemorySaveL()
    {
    CCalcView::TKindOfInput kindOfInput(CCalcView::EMemorySave);
    
    if (iState == EOperandAndOperatorAndOperand)
        {
        if (HandleEqualSubRoutineL()) // Calculate result
            {
            return;
            }
        }
    else
        {
        if (iState == ESelectResult)
            {
            iCalcDocument->AddEmptyLine();
            iOutputSheet->ScrollToBottomL();
            iContainer->ScrollArrowUpdate();
            iEditorSubPane->SetOperator(TCalcEditLine::ECalcOperatorNone);
            
            if (iEditorSubPane->EditLine().CheckZeroL())
                {
                kindOfInput = CCalcView::EAllClear;
                }
            }
        }
    iCalcDocument->MemorySaveL(iEditorSubPane->EditorNumber());
    iEditorSubPane->DrawNow();
    UpdateState(kindOfInput);
    iContainer->SetChangeSignEnableL();
	iContainer->SetSqrtEnableL();
    }

// ---------------------------------------------------------
// CCalcView::HandleMemoryRecallL
// Handle MemoryRecall command
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::HandleMemoryRecallL()
    {
    iEditorSubPane->DoMemoryRecallOrLastResult(
        iCalcDocument->Memory(), iState );

    if ( iState == ESelectResult )
        {
        iCalcDocument->AddEmptyLine();
        iOutputSheet->ScrollToBottomL();
        iContainer->ScrollArrowUpdate();
        }
        
    UpdateState( EMemoryRecall );
    if ( iState == EOperandOnly && 
         iEditorSubPane->EditLine().CheckZeroL() )
        {
        UpdateState( EAllClear );
        }

    iContainer->SetChangeSignEnableL();
    iContainer->SetSqrtEnableL();

    iContainer->SetClearKeyEnable();

    // highlighting the sign "%".
    if ( iState == EOperandAndOperatorAndOperand )
        {
        iContainer->SetPercentEnableL();
        }        
    }

// ---------------------------------------------------------
// CCalcView::HandleMemoryClear
// Handle MemoryClear command
// (other items were commented in a header).
// ---------------------------------------------------------
// 

void CCalcView::HandleMemoryClearL()
    {
    iCalcDocument->MemoryClearL();
    iEditorSubPane->DrawNow();
    }

// ---------------------------------------------------------
// CCalcView::HandleScrollUp
// Handle Scroll up button command
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::HandleScrollUp()
    {
    iOutputSheet->ScrollUp();
    iContainer->ScrollArrowUpdate();
    }

// ---------------------------------------------------------
// CCalcView::HandleScrollDown
// Handle Scroll down button command
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::HandleScrollDown()
    {
    iOutputSheet->ScrollDown();
    iContainer->ScrollArrowUpdate();
    }

// ---------------------------------------------------------
// CCalcView::DoClearCalcAndHistoryL
// Clear calculation history and clear calculation.
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::DoClearCalcAndHistoryL()
    {
    iCalcDocument->History()->ClearHistory();
    iOutputSheet->NotifyClearHistoryL();
    iContainer->ScrollArrowUpdate();
    // Clear calculation
    TKeyEvent keyEvent;
    keyEvent.iCode = EKeyBackspace;
    keyEvent.iRepeats = 1; 
    iEditorSubPane->OfferKeyEventL(keyEvent, EEventKey);
    iContainer->ShowPercentButton(EFalse);
    }
        

// ---------------------------------------------------------
// CCalcView::HandleOperatorL
// Operator Handler common routin.
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::HandleOperatorL
        (TCalcEditLine::TCalcOperatorType aOperator) 
    {
    TCalcEditLine editLine(iEditorSubPane->EditLine());
    TReal64 editorNumber(iEditorSubPane->EditorNumber());
    TReal64 result(editorNumber);

    this->iLastResultSetected = EFalse;
	// User has pressed %
    if (aOperator == TCalcEditLine::ECalcPercent)
        {	
        if (iState == EOperandAndOperatorAndOperand)
            {
			editLine.TrimZeroL();
			// Save the previous operator
			TCalcEditLine::TCalcOperatorType previousOperator = editLine.Operator();
			// Set the operator to percent
			editLine.SetOperator(TCalcEditLine::ECalcPercent);
			
            
            // Calculate
            TRAPD(errorCode3, 
			    result = iCalcDocument->CalculateAndModifyHistoryL(
                editorNumber, editLine, previousOperator));
			
            if (errorCode3)
				{
				ErrorMsgL(errorCode3);
				return;
				}

            iOutputSheet->ScrollToBottomL();
			// Show the correct operand in the output sheet
			aOperator = previousOperator;
			// Set the state to EOperatorResult so that the HandleResult knows what to do
			UpdateState(EOperatorResult);
			}	
		}

	// User has pressed sqrt
	else if (aOperator == TCalcEditLine::ECalcSqrt)
		{
		// We are in a middle of calculation chain
		if (iState == EOperandAndOperatorAndOperand)
			{
			editLine.TrimZeroL();
			// Save the previous operator
			TCalcEditLine::TCalcOperatorType previousOperator = editLine.Operator();
			// Set the operator to sqrt
			editLine.SetOperator(TCalcEditLine::ECalcSqrt);
			
			// First calculate the sqrt
			TRAPD(errorCode, 
				result = iCalcDocument->CalculateAndNoHistoryL(
				editorNumber, editLine));
                                                 
			if (errorCode)
				{
				ErrorMsgL(errorCode);
				return;
				}
			
			// Set the operator to previous one
			editLine.SetOperator(previousOperator);
			// Result goes to the outputsheet
			editLine.SetNumber(result);

			// Calculate again
			TRAPD(errorCode2, 
				result = iCalcDocument->CalculateAndAddHistoryL(
				result, editLine));
                                                 
			if (errorCode2)
				{
				ErrorMsgL(errorCode2);
				return;
				}
			// Set this so that we will display correct operator in the output sheet
			aOperator = previousOperator;
			iOutputSheet->ScrollToBottomL();
			UpdateState(EOperator);
			// Dimm the square root and percent
			iContainer->ShowSqrtButton(EFalse);
			iContainer->ShowPercentButton(EFalse);
			}
		// Only operand and sqrt
		else
			{
			editLine.SetOperator(aOperator);
		
			// Trap harness, because the CalculateAndHistoryL leaves in case of negative operand
			TRAPD(errorCode,
				result = iCalcDocument->CalculateAndAddHistoryL(
				editorNumber, editLine));
			
			if (errorCode)
				{
				ErrorMsgL(errorCode);
				return;
				}

			iOutputSheet->ScrollToBottomL();
			//Set the state to EOperatorResult so that we know to call HandleResult later
			UpdateState(EOperatorResult);
			}
		}
    //  Current state is state4 and previous input is MS,
    // provisional result is get and show this the editor.
    // And a line is not added to OutputSheet because a line
    // is already added.
    
	else if (iState == ESelectResult)
        {
        iCalcDocument->AddEmptyLine();
        editLine.SetOperator(TCalcEditLine::ECalcOperatorNone);
		//  Because the state is "User has selected result",
        // this function does not occur leave.
        result = iCalcDocument->CalculateAndAddHistoryL(
                 editorNumber, editLine);
        iOutputSheet->ScrollToBottomL();
		UpdateState(EOperator);	
		iContainer->SetSqrtEnableL();
		}
		
    //  If a input is a operator and state is updated,
    // calculate and update history.
    else if (iState != EOperandAndOperator)  
        {
        editLine.TrimZeroL();

		// If the number in the EditLine is not a operand
		// we need to dim square root and percent buttons
		if (iState == EOperandAndOperatorAndOperand)
			{
			iContainer->ShowSqrtButton(EFalse);
			iContainer->ShowPercentButton(EFalse);
			}
        // Calculate by user's input
        TRAPD(errorCode, 
              result = iCalcDocument->CalculateAndAddHistoryL(
              editorNumber, editLine));
                                                 
        if (errorCode)
            {
            ErrorMsgL(errorCode);
            return;
            }
        iOutputSheet->ScrollToBottomL();
		UpdateState(EOperator);
		}
    
    iEditorSubPane->SetEditorNumber(result);
    iEditorSubPane->SetOperator(aOperator);
    
    if ( aOperator != TCalcEditLine::ECalcSqrt )
        {
        iEditorSubPane->DrawNow();  
        }
    iContainer->ScrollArrowUpdate();
    iContainer->SetChangeSignEnableL();
    iContainer->SetClearKeyEnable(); 
	if (aOperator == TCalcEditLine::ECalcAdd ||aOperator == TCalcEditLine::ECalcSubtract ||
		 aOperator == TCalcEditLine::ECalcMultiply ||aOperator == TCalcEditLine::ECalcDivide )
		{
		iContainer->SetChangeSignDisable();
		}  
	
    }


// ---------------------------------------------------------
// CCalcView::HandleEqualSubRoutineL
// Common routine for select result and MemorySave on two operands
// and operator or State4.
// (other items were commented in a header).
// ---------------------------------------------------------
//
TInt CCalcView::HandleEqualSubRoutineL()
    {
    TCalcEditLine editLine(iEditorSubPane->EditLine());
    TInt calculationError(KErrNone);
    TReal64 result(0);

    if (iState == EOperandAndOperator || iState == EOperatorOnlyResult)
        {
		// User has selected equal or operand and sqrt, or percent
        result = iCalcDocument->ProvisionalResult();
        }
    else 
        {
        editLine.TrimZeroL();
		// We are calculating the intermediate result. 
		// So we need to dim the sqrt and percent buttons.
		iContainer->ShowSqrtButton(EFalse);
		iContainer->ShowPercentButton(EFalse);
        
        if (iState == ESelectResult)
            {
            iCalcDocument->AddEmptyLine();
            editLine.SetOperator(TCalcEditLine::ECalcOperatorNone);
            }
        TRAP(calculationError,
             result = iCalcDocument->CalculateAndAddHistoryL(
             iEditorSubPane->EditorNumber(), editLine));
        }
    
    //  If overflow or division by zero occurs,
    // error message is displayed.
    if (calculationError)
        {
        ErrorMsgL(calculationError);

        }
    else
        {
        iCalcDocument->AddEqualLineAndUpdateLastResultL();
        iEditorSubPane->SetEditorNumber(result);
        iEditorSubPane->SetOperator(TCalcEditLine::ECalcEqual);
        // Show result on the sheet
        CCalcOutputSheet* sheet = iContainer->OutputSheet();
        sheet->ScrollToBottomL();
        iContainer->ScrollArrowUpdate();
        }
    return calculationError;
    }

// ----------------------------------------------------
// CCalcView::DoActivateL
// This is called when CCalcView becomes active.
// (other items were commented in a header).
// ----------------------------------------------------
//
void CCalcView::DoActivateL
                (const TVwsViewId& /* aPrevViewId */,
                 TUid /* aCustomMessageId */,
                 const TDesC8& /* aCustomMessage */)
    {
    AppUi()->AddToStackL(*this, iContainer);
    iContainer->ActivateL();
    }

// ----------------------------------------------------
// CCalcView::DoDeactivate
// This is called when CCalcView becomes deactive.
// (other items were commented in a header).
// ----------------------------------------------------
//
void CCalcView::DoDeactivate()
    {
    if (iContainer)
        {
        AppUi()->RemoveFromStack(iContainer);
        }
    }

// ---------------------------------------------------------
// CCalcView::Id
// Return UID of CCalcView
// (other items were commented in a header).
// ---------------------------------------------------------
//
TUid CCalcView::Id() const
    {
    return TUid::Uid(KCalcViewId);
    }

// ---------------------------------------------------------
// CCalcView::DynInitMenuPaneL
// This app can have only one menu.
// But menu of Calculator application is changed on State, memory etc.
// Therefore to delete meaningless items from menu, this function is defined. 
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CCalcView::DynInitMenuPaneL
        (TInt aResourceId,        
         CEikMenuPane* aMenuPane) 
    {
    if(iServiceHandler->HandleSubmenuL(*aMenuPane))
        {
        	return;
        }
    switch (aResourceId)
        {
        case (R_CALC_POPUPMENU):
            {
		        
    	       		DynInitMainMenuPane(aMenuPane);
			        
		        /***** Get the context of the Help topic from here *****/
		      	CArrayFix<TCoeHelpContext>* buf= AppUi()->AppHelpContextL();
		       	TInt i= buf->Count();
		       	if(i!=0)
		       		{
		       		/***** Check whether our flag is defined or not *****/
		       	    #ifdef RD_HELP_AIW_INTEGRATION
		       	    
		       	    /***** Call the AiwProvider's AddItemsL  to attach the mnu items********/
		       	    	
		       		 	iServiceHandler->InitializeMenuPaneL(*aMenuPane,aResourceId,
		        						ECmdLast,iServiceHandler->InParamListL()); 
		        	/**** Set the old embedded help as dimmed one ****/ 
		        		aMenuPane->SetItemDimmed(ECalcCmdHelp, ETrue);				 	
		        	#else
		        	/**** Set the Aiw Help as dimmed one as our feature flag is not defined ****/ 
		        		aMenuPane->SetItemDimmed(ECmdAiwPlaceHolder,ETrue);	
		        	#endif
		       		}
		        else 
		            {
		         /**** If the Feature flag is not defined dont show the Aiw Help ****/
		        	aMenuPane->SetItemDimmed(ECmdAiwPlaceHolder,ETrue);
		            }
		            
		        /******* Delete the buffer and make it to NULL *****/
		       	delete buf;
		        buf = NULL;   
		        if (!FeatureManager::FeatureSupported( KFeatureIdHelp ))
			        {
			        aMenuPane->DeleteMenuItem(ECalcCmdHelp);
			        aMenuPane->DeleteMenuItem(ECmdAiwPlaceHolder);
			        }  
            break;
            }

        case (R_CALC_MEMORY_MENU):
            {
            DynInitMemoryMenuPane(aMenuPane);
            break;
            }
        default:
            {
            break;
            }
        }
    }   
// ---------------------------------------------------------
// CCalcView::HandleForegroundEventL
//Refresh and draw display ,paper and function map Icons.
// ---------------------------------------------------------
//
void CCalcView::HandleForegroundEventL(TBool aForeground)
	{
	if( (aForeground) && (STATIC_CAST(CCalcAppUi*, AppUi())->IsSkinChanged()) )
		{
		iEditorSubPane->RefreshDisplaySideLBitmap();
		iEditorSubPane->RefreshDisplayCenterBitmap();
		iEditorSubPane->RefreshDisplaySideRBitmap();	
		
		iEditorSubPane->DrawNow();

		iOutputSheet->RefreshPaperBitmap();
		iOutputSheet->RefreshScalablePaperBitmap();
#ifdef __SCALABLE_ICONS
		iOutputSheet->RefreshResultsLineBitmap();
#endif
		iOutputSheet->DrawNow();

		iContainer->FunctionSubPane()->RefreshButtonIcons();		
		for(TInt i =0; i< 10; i++)
			{
			iContainer->FunctionSubPane()->GetButtonBitmapControl(i)->DrawNow();
			}
		}
	else
		{
		CAknView::HandleForegroundEventL(aForeground);
		}
	}


//  End of File