logexampleview.cpp

Log Engine的使用

/*
* ============================================================================
*  Name     : CLogExampleView from LogExampleView.h
*  Part of  : LogExample
*  Created  : 26.05.2005 by Forum Nokia 
*  Implementation notes:
*     Initial content was generated by Series 60 Application Wizard.
*  Version  : 1.0
*  Copyright: Nokia Corporation
* ============================================================================
*/

// INCLUDE FILES
#include  	<aknviewappui.h>
#include  	<avkon.hrh>
#include  	<LogExample.rsg>
#include  	"LogExample.hrh"
#include  	"LogExampleView.h"
#include	"LogExampleContainer.h"
#include	"LogExampleAppUi.h"
#include   	"LogExEngine.h"

#include <eikmenup.h> // DynInitMenuPaneL
#include <aknquerydialog.h> // CAknQueryDialog

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

// ---------------------------------------------------------
// CLogExampleView::ConstructL(const TRect& aRect)
// Symbian two-phased constructor
// ---------------------------------------------------------
//
void CLogExampleView::ConstructL()
    {
    BaseConstructL( R_LOGEXAMPLE_VIEW1 );
    }

// ---------------------------------------------------------
// CLogExampleView::~CLogExampleView()
// destructor
// ---------------------------------------------------------
//
CLogExampleView::~CLogExampleView()
    {
    if ( iContainer )
        {
        AppUi()->RemoveFromViewStack( *this, iContainer );
        }

    delete iContainer;
    iContainer = NULL;
    }
    
// ---------------------------------------------------------
// MEventsObserver CLogExampleView::GetObserver()
// Returns observer
// ---------------------------------------------------------
//
MEventsObserver* CLogExampleView::GetObserver()
	{
	return iContainer;
	}

// ---------------------------------------------------------
// TUid CLogExampleView::Id()
// Returns Uid of view
// ---------------------------------------------------------
//
TUid CLogExampleView::Id() const
    {
    return KViewId;
    }

// ---------------------------------------------------------
// CLogExampleView::HandleCommandL(TInt aCommand)
// Takes care of view command handling
// ---------------------------------------------------------
//
void CLogExampleView::HandleCommandL(TInt aCommand)
    {   
    
    //variable for setting visibility boolean
    TBool visible = ETrue; 
    
    iCurrentEvents = 0;
    
    switch ( aCommand )
        {
        
        // Command handling related to event filtering
        case ELogExampleCmdViewAll:
	        {
	        // Reset eventlist and make it visible
	        iContainer->ResetEventList();
	        MakeContainerVisible(visible);
	        
	        // Get model, clear the filter (to get all the events) and start reading the events
        	Model()->ClearEventFilter();
        	Model()->ReadEventsL(); 
        	iCurrentEvents = ELogExampleCmdViewAll;
			break;       	
	        }
	   	case ELogExampleCmdViewIncoming:
	        {
            iContainer->ResetEventList();
	        MakeContainerVisible(visible);
        	Model()->SetEventFilterDirectionIncoming();
        	Model()->ReadEventsL();
        	iCurrentEvents = ELogExampleCmdViewIncoming;
			break;       	
	        }
	    case ELogExampleCmdViewOutgoing:
	        {
            iContainer->ResetEventList();
	        MakeContainerVisible(visible);
        	Model()->SetEventFilterDirectionOutgoing();
        	Model()->ReadEventsL();
        	iCurrentEvents = ELogExampleCmdViewOutgoing;
			break;       	
	        }
	    case ELogExampleCmdViewVoice:
	        {
            iContainer->ResetEventList();
	        MakeContainerVisible(visible);
        	Model()->SetEventFilterEventTypeVoice();
        	Model()->ReadEventsL();
        	iCurrentEvents = ELogExampleCmdViewVoice;
			break;       	
	        }
	    case ELogExampleCmdViewSMS:
	        {
            iContainer->ResetEventList();
	        MakeContainerVisible(visible);
        	Model()->SetEventFilterEventTypeSMS();
        	Model()->ReadEventsL();
        	iCurrentEvents = ELogExampleCmdViewSMS;
			break;       	
	        }
	        
	    // Command handling related to event adding   
	    case ELogExampleCmdAddRandom:
        	{
        	Model()->AddRandomEventL();
        	break;	
        	}
        case ELogExampleCmdAddOwnEvent:
        	{
        	Model()->AddOwnEventL();
        	break;	
        	}
        case ELogExampleCmdShowDetails:
        	{
        	iContainer->ShowEventDetailsL();
        	break;
        	}
        
        case ELogExampleCmdDelete:
        	{
        	CAknQueryDialog* deleteQuery = CAknQueryDialog::NewL();
        	
        	if(deleteQuery->ExecuteLD(R_LOGEXAMPLE_DELETECONFIRMATION_QUERY))
        		{
        		TLogId selectedId = -1;
        		iContainer->GetSelectedId(selectedId);
        		Model()->DeleteEventL(selectedId);		
        		}
        		
        	break;
        	}
        case EAknSoftkeyBack:
            {
            visible = EFalse;
            MakeContainerVisible(visible);
			break;
            }
        default:
            {
            AppUi()->HandleCommandL( aCommand );
            break;
            }
        }
    }

// ---------------------------------------------------------
// CLogExampleView::HandleClientRectChange()
// Reacts if rectangle's size changes
// ---------------------------------------------------------
//
void CLogExampleView::HandleClientRectChange()
    {
    if ( iContainer )
        {
        iContainer->SetRect( ClientRect() );
        }
    }

// ---------------------------------------------------------
// CLogExampleView::DoActivateL(const TVwsViewId& /*aPrevViewId*/,
// TUid /*aCustomMessageId*/, const TDesC8& /*aCustomMessage*/))
// Activates the view
// ---------------------------------------------------------
//
void CLogExampleView::DoActivateL(
   const TVwsViewId& /*aPrevViewId*/, TUid /*aCustomMessageId*/,
   const TDesC8& /*aCustomMessage*/)
    {
    if (!iContainer)
    	{
    	iContainer = new (ELeave) CLogExampleContainer;
    	iContainer->SetMopParent(this);
    	iContainer->ConstructL( ClientRect() );
    	AppUi()->AddToStackL( *this, iContainer );
    	
    	// Set container as an observer 
    	CLogExampleAppUi* appUi = static_cast<CLogExampleAppUi*>(AppUi());
       	CLogExEngine* model = appUi->Model();
       	model->SetObserver(iContainer);
		Cba()->SetCommandSetL(R_AVKON_SOFTKEYS_OPTIONS_EXIT);
		Cba()->DrawNow();	
    	}
  	}

// ---------------------------------------------------------
// CLogExampleView::DoDeactivate()
// Deactivates the view
// ---------------------------------------------------------
//
void CLogExampleView::DoDeactivate()
    {
    if ( iContainer )
        {
        // Remove observer to cancel notifications
        CLogExampleAppUi* appUi = static_cast<CLogExampleAppUi*>(AppUi());
       	CLogExEngine* model = appUi->Model();
       	model->RemoveObserver();
        AppUi()->RemoveFromViewStack( *this, iContainer );
        delete iContainer;
    	iContainer = NULL;
        }
    }
    
// ---------------------------------------------------------
// CLogExampleView::Model()
// Returns appUi's model
// ---------------------------------------------------------
//
CLogExEngine* CLogExampleView::Model()
	{
	CLogExampleAppUi* appUi = static_cast<CLogExampleAppUi*>(AppUi());
   	CLogExEngine* model = appUi->Model();
   	return model;
	}

// ------------------------------------------------------------------------------
//  CLogExampleView::DynInitMenuPaneL(TInt aResourceId,CEikMenuPane* aMenuPane)
//  This function is called by the EIKON framework just before it displays
//  a menu pane. Its default implementation is empty, and by overriding it,
//  the application can set the state of menu items dynamically according
//  to the state of application data.
// ------------------------------------------------------------------------------
//
void CLogExampleView::DynInitMenuPaneL(TInt aResourceId, CEikMenuPane* aMenuPane)
    {
   
   	/* 
   	Simple dynamic menu. 
   	Items are dimmed depending on state of the application.
   	Note: This can only be used with Series60 where items are hidden when dimmed.
   	*/
   	if 	(aResourceId == R_LOGEXAMPLE_VIEW1_MENU && iContainer->IsListBoxVisible() && 
   		iContainer->ListBoxItemCount() == 0)
    	{
    	// Show only Exit
    	aMenuPane->SetItemDimmed(ELogExampleCmdAppView, ETrue);
    	aMenuPane->SetItemDimmed(ELogExampleCmdAppAddEvent, ETrue);
    	aMenuPane->SetItemDimmed(ELogExampleCmdShowDetails, ETrue);
    	aMenuPane->SetItemDimmed(ELogExampleCmdDelete, ETrue);    	
    	}
   
    else if(aResourceId == R_LOGEXAMPLE_VIEW1_MENU && 
    	iContainer->IsListBoxVisible() )
    	{
    	aMenuPane->SetItemDimmed(ELogExampleCmdAppView, ETrue);
    	aMenuPane->SetItemDimmed(ELogExampleCmdAppAddEvent, ETrue);	
    	}
    
    else if (aResourceId == R_LOGEXAMPLE_VIEW1_MENU && 
    		!iContainer->IsListBoxVisible())
    	{
    	aMenuPane->SetItemDimmed(ELogExampleCmdShowDetails, ETrue);
    	aMenuPane->SetItemDimmed(ELogExampleCmdDelete, ETrue);    	
    	}
    }
    
// ------------------------------------------------------------------------------
//  CLogExampleView::MakeContainerVisible(TBool& aVisible)
//  Hides or unhides the container and changes the CBA accordingly.
// ------------------------------------------------------------------------------
//
void CLogExampleView::MakeContainerVisible(TBool& aVisible)
	{
	iContainer->MakeVisible(aVisible);
	if (aVisible)
		{
		Cba()->SetCommandSetL(R_AVKON_SOFTKEYS_SELECTION_LIST);
		}
	else
		{
		Cba()->SetCommandSetL(R_AVKON_SOFTKEYS_OPTIONS_EXIT);
		}
	Cba()->DrawNow();	
	}

// ------------------------------------------------------------------------------
//  CLogExampleView::RefreshL()
//  Refreshes the events.
// ------------------------------------------------------------------------------
//	
void CLogExampleView::RefreshL()
	{
	if (iCurrentEvents != 0)
		{
		HandleCommandL(iCurrentEvents);
		}
	}
// End of File