examples/Networking/TcpIp/EchoClientUI/Eikecho.cpp

/*
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  may be used to endorse or promote products derived from this software
  without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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Description:
EIKON interface to ECHOENG
Definitions of CConsoleControl, CEchoAppUi, 
CEchoDocument, CEchoApplication  
*/


#include "Eikecho.h"
#include <eikstart.h>


CConsoleControl* CConsoleControl::NewL(CEchoEngine* aEchoEngine)
        {
        CConsoleControl* self=new (ELeave) CConsoleControl;
        CleanupStack::PushL(self);
        self->ConstructL(aEchoEngine);
        CleanupStack::Pop();
        return self;
        }

void CConsoleControl::ConstructL(CEchoEngine* aEchoEngine)
        {
        iEchoEngine=aEchoEngine;
    CreateWindowL();
    Window().SetShadowDisabled(ETrue);
    Window().SetBackgroundColor(KRgbGray);
    EnableDragEvents();
    SetExtentToWholeScreen();
        SetBlank();
    iConsole=new(ELeave) CEikConsoleScreen;
        _LIT(KEikEcho,"EikEcho");
        iConsole->ConstructL(KEikEcho,0);
        iConsole->SetHistorySizeL(10,10);
        }

CConsoleControl::~CConsoleControl()
        {
        delete iConsole;
        }
void CConsoleControl::ActivateL()
        {
        CCoeControl::ActivateL();
        iConsole->SetKeepCursorInSight(TRUE);
        iConsole->DrawCursor();
        iConsole->ConsoleControl()->SetFocus(ETrue, EDrawNow); 
        }

TKeyResponse CConsoleControl::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
// The key event handler
    {
        if (aType!=EEventKey)
                return(EKeyWasConsumed);
    TInt aChar=aKeyEvent.iCode;

        if (aChar == '3')
                // Connect using an IP address
                {
                _LIT(KConnecting1,"Attempting connection to KInetAddr\n");
                iConsole->Printf(KConnecting1);
                iEchoEngine->ConnectTo(KInetAddr);
                }
        else if (aChar == '2')
                {
                // Connect using a hostname, calling DNS first to resolve this to an IP address
                _LIT(KConnecting2,"Attempting connection to KInetHostName\n");
                iConsole->Printf(KConnecting2);
                iEchoEngine->ConnectL(KInetHostName);
                }
        else if (aChar == '1')
                {
                // Connect using an IP address, obtaining the symbolic name for this IP address first.
                _LIT(KConnecting3,"Testing GetHostByAddress and attempting connection\n");
                iConsole->Printf(KConnecting3);
                iEchoEngine->TestGetByAddrL(KInetAddr);
                }
        else iEchoEngine->Write(aChar); // Send input character to echo server
        
    return(EKeyWasConsumed);
    }




// The following functions are to implement MUINotify

void CConsoleControl::PrintNotify(const TDesC& aDes) 
// Print up calls: write information to screen
        {
        iConsole->Printf(aDes);
        };

void CConsoleControl::PrintNotify(TInt aInt)
        {
        iConsole->Printf(KIntFormat,aInt);
        };

void CConsoleControl::ErrorNotifyL(const TDesC& aErrMessage, TInt aErrCode)
// Error up call: inform user and quit
        {
        _LIT(KErrorTitle,"Communications error ");
        TBuf<25> errorTitleCode(KErrorTitle);
        errorTitleCode.AppendNum(aErrCode);
        CEikonEnv::Static()->InfoWinL(errorTitleCode,aErrMessage);
        CBaActiveScheduler::Exit();
        }
CEchoAppUi::CEchoAppUi(CEchoEngine* aEchoEngine)
                : iEchoEngine(aEchoEngine)
        {
        }

void CEchoAppUi::ConstructL()
// Set up control and engine
    {
    BaseConstructL();
        CreateConsoleL();
        iEchoEngine->ConstructL(iConsoleControl);
        _LIT(KCommands,"\nList of Commands:\n\
3 - Test connecting with IP\n\
2 - Test DNS lookup\n\
1 - Test Get hostname from IP address\n\n");

        iConsoleControl->PrintNotify(KCommands);
    }

void CEchoAppUi::CreateConsoleL()
        {
        iConsoleControl=CConsoleControl::NewL(iEchoEngine);
        AddToStackL(iConsoleControl);
        iConsoleControl->ActivateL();
        }

CEchoAppUi::~CEchoAppUi()
        {
        RemoveFromStack(iConsoleControl);
    delete iConsoleControl;
        }

void CEchoAppUi::HandleCommandL(TInt aCommand)
// Command handling
        {
    switch (aCommand)
        {
        // When Exit chosen, stop engine and quit
        case EEikCmdExit:
                iEchoEngine->Stop();
                Exit();
        default:;
                }
        }

/*
 Two-phase construction
 CEchoDocument: document class, which owns the engine
*/
CEchoDocument::CEchoDocument(CEikApplication& aApp)
        : CEikDocument(aApp) { }

CEchoDocument* CEchoDocument::NewL(CEikApplication& aApp)
        {
        CEchoDocument* self=new (ELeave) CEchoDocument(aApp);
        CleanupStack::PushL(self);
        self->ConstructL();
        CleanupStack::Pop();
        return self;
        }

void CEchoDocument::ConstructL()
        {
        iEchoEngine = new (ELeave) CEchoEngine;
        }

CEchoDocument::~CEchoDocument()
        {
        delete iEchoEngine;
        }

CEikAppUi* CEchoDocument::CreateAppUiL()
        {
    return(new(ELeave) CEchoAppUi(iEchoEngine));
        }


TUid CEchoApplication::AppDllUid() const
        {
        return(KUidEikEchoApp);
        }

CApaDocument* CEchoApplication::CreateDocumentL()
        {
        return CEchoDocument::NewL(*this);
        }

EXPORT_C CApaApplication* NewApplication()
        {
        return(new CEchoApplication);
        }

GLDEF_C TInt E32Main()                                          
        {
        return EikStart::RunApplication(NewApplication);
        }

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