• Symbian OS basics, Memory Management, Descriptors, Application Structure, Client-Server, Act

				
				
				#include "MyViews.h"
				#include 
				#include 
				#include 
				#include 
				#include 
				#include "MyEngine.h"
				#include "MyAppUi.h"
				#include "MyApp.hrh"
				#include 
				
				CMyViewOne::~CMyViewOne()
					{
					delete iContainer;
					}
				
				CMyViewOne* CMyViewOne::NewL()
					{
					CMyViewOne* self = CMyViewOne::NewLC();
					CleanupStack::Pop(self);
					return self;
					}
				
				CMyViewOne* CMyViewOne::NewLC()
					{
					CMyViewOne* self = new (ELeave) CMyViewOne();
					CleanupStack::PushL(self);
					self->ConstructL();
					return self;
					}
				
				
				void CMyViewOne::ConstructL()
				    {
					BaseConstructL(R_MYAPP_VIEW_ONE);
				    }
				
				
				TUid CMyViewOne::Id() const
					{
					return KUidMyAppViewOne;
					}
				
				void CMyViewOne::DoActivateL (const TVwsViewId &/*aPrevViewId*/, TUid /*aCustomMessageId*/, const TDesC8 &/*aCustomMessage*/)
					{
					if (!iContainer)
						{
						iContainer = CContainerOne::NewL(ClientRect());
						iContainer->SetMopParent(this);
						AppUi()->AddToStackL(*this, iContainer);
						}
					}
				
				void CMyViewOne::DoDeactivate()
					{
					if (iContainer)
						{
						AppUi()->RemoveFromStack(iContainer);
						delete iContainer;
						iContainer = NULL;
						}
				
					}
				
				void CMyViewOne::HandleCommandL(TInt aCommand)
					{
					// We could choose to handle events in this class but 
					// for consistency with UIQ they can be passed to appui
					AppUi()->HandleCommandL(aCommand);
					}
				//////////////////////////////////////////////////////////
				
				CMyViewTwo::~CMyViewTwo()
					{
					delete iContainer;
					}
				
				CMyViewTwo* CMyViewTwo::NewL()
					{
					CMyViewTwo* self = CMyViewTwo::NewLC();
					CleanupStack::Pop(self);
					return self;
					}
				
				CMyViewTwo* CMyViewTwo::NewLC()
					{
					CMyViewTwo* self = new (ELeave) CMyViewTwo();
					CleanupStack::PushL(self);
					self->ConstructL();
					return self;
					}
				
				
				void CMyViewTwo::ConstructL()
				    {
					BaseConstructL(R_MYAPP_VIEW_TWO);
				
				    }
				void CMyViewTwo::HandleCommandL(TInt aCommand)
					{
					    switch ( aCommand )
				        {
						case EMyAppCmdMessageType2:
							{
							CAknGlobalNote* globalNote = CAknGlobalNote::NewLC();
							globalNote->ShowNoteL(EAknGlobalWarningNote, _L("Warning Note"));
							CleanupStack::PopAndDestroy();
							break;
							}
						case EMyAppCmdMessageType3:
							{
							CAknGlobalNote* globalNote = CAknGlobalNote::NewLC();
							globalNote->ShowNoteL(EAknGlobalConfirmationNote, _L("Confirmation Note"));
							CleanupStack::PopAndDestroy();
							break;
							}
				
						// we let the AppUi deal with the rest
						// including the view switching
						default:
							AppUi()->HandleCommandL(aCommand);
						}
				
					}
				
				
				
				TUid CMyViewTwo::Id() const
					{
					return KUidMyAppViewTwo;
					}
				
				void CMyViewTwo::DoActivateL (const TVwsViewId &/*aPrevViewId*/, TUid /*aCustomMessageId*/, const TDesC8 &/*aCustomMessage*/)
					{
					if (!iContainer)
						{
						iContainer = CContainerTwo::NewL(ClientRect());
						iContainer->SetMopParent(this);
						AppUi()->AddToStackL(*this, iContainer);
						}	  
					}
				
				void CMyViewTwo::DoDeactivate()
					{
					if (iContainer)
						{
						AppUi()->RemoveFromStack(iContainer);
						delete iContainer;
						iContainer = NULL;
						}
				
					}
				
				
				
				
				
				/// Containers
				CContainerOne* CContainerOne::NewL(const TRect& aRect)
					{
					CContainerOne* self = CContainerOne::NewLC(aRect);
					CleanupStack::Pop(self);
					return self;
					}
				
				CContainerOne* CContainerOne::NewLC(const TRect& aRect)
					{
					CContainerOne* self = new (ELeave) CContainerOne;
					CleanupStack::PushL(self);
					self->ConstructL(aRect);
					return self;
					}
				
				CContainerOne::~CContainerOne()
					{
					delete iLabel;
					}
				
				
				void CContainerOne::ConstructL(const TRect& aRect)
					{
					CreateWindowL();
					iLabel = new (ELeave) CEikLabel;
				    iLabel->SetContainerWindowL( *this );
					CMyEngine* engine = static_cast(CEikonEnv::Static()->AppUi())->GetEngine();
					iLabel->SetTextL(engine->GetViewOneData());
				
				    SetRect(aRect);
				    ActivateL();
					}
				
				
				void CContainerOne::SizeChanged()
				    {
				    // TODO: Add here control resize code etc.
				    iLabel->SetExtent( TPoint(10,10), iLabel->MinimumSize() );
				    }
				
				TInt CContainerOne::CountComponentControls() const
				    {
				    return 1; // return nbr of controls inside this container
				    }
				
				CCoeControl* CContainerOne::ComponentControl(TInt aIndex) const
				    {
				    switch ( aIndex )
				        {
				        case 0:
				            return iLabel;
				        default:
				            return NULL;
				        }
				    }
				
				void CContainerOne::Draw(const TRect& aRect) const
				    {
				    CWindowGc& gc = SystemGc();
				    gc.SetPenStyle(CGraphicsContext::ENullPen);
				    gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
				    gc.DrawRect(aRect);
				    }
				
				
				
				///////////// end of container one. //////////////////////////
				CContainerTwo* CContainerTwo::NewL(const TRect& aRect)
					{
					CContainerTwo* self = CContainerTwo::NewLC(aRect);
					CleanupStack::Pop(self);
					return self;
					}
				
				CContainerTwo* CContainerTwo::NewLC(const TRect& aRect)
					{
					CContainerTwo* self = new (ELeave) CContainerTwo;
					CleanupStack::PushL(self);
					self->ConstructL(aRect);
					return self;
					}
				
				   
				void CContainerTwo::ConstructL(const TRect& aRect)
					{
					CreateWindowL();
					iLabel = new (ELeave) CEikLabel;
				    iLabel->SetContainerWindowL( *this );
					CMyEngine* engine = static_cast(CEikonEnv::Static()->AppUi())->GetEngine();
					iLabel->SetTextL(engine->GetViewTwoData());
				    SetRect(aRect);
				    ActivateL();
					}