//  INCLUDES
#include <aknapp.h>
#include <aknappui.h>
#include <eikdoc.h>
#include <sdlepocapi.h>
#include <bautils.h>
#include <eikstart.h>
#include <badesca.h>
#include <bautils.h>
#include <apgcli.h>
#include <sdlmain.h>
#include <eikedwin.h>
#include <eiklabel.h>
#include <sdlexe.rsg>
#include <aknglobalmsgquery.h>
#include <apgwgnam.h> 


//  FORWARD DECLARATIONS
class CApaDocument;


//const TUid KSDLUID = { 0xF01F605E };

LOCAL_C void MakeCCmdLineL(const TDesC8& aParam, CDesC8Array& aArray)
    { 
    
    const TChar dq('\"');

    TLex8 lex(aParam);
    TBool in = EFalse;

    lex.SkipSpaceAndMark();

    while(!lex.Eos())
        {
        TPtrC8 ptr;
        if(in)
            {
            const TPtrC8 rem = lex.RemainderFromMark();
            const TInt pos = rem.Locate(dq);
            if(pos > 0)
                {
                lex.Inc(pos);
                ptr.Set(lex.MarkedToken());
                lex.SkipAndMark(1);
                }
            else
                {
                ptr.Set(rem);
                }
            in = EFalse;
            }
        else
            {
            ptr.Set(lex.NextToken());
            const TInt pos = ptr.Locate(dq);
            if(pos == 0)
                {
                lex.UnGetToMark();
                lex.SkipAndMark(1);
                in = ETrue;
                continue; // back to in brace
                }
            else
                lex.SkipSpaceAndMark();
            }
        
        aArray.AppendL(ptr);

        }
    }  
    
NONSHARABLE_CLASS(TVirtualCursor) : public MOverlay
	{
	public:
		TVirtualCursor();
		void Set(const TRect& aRect, CFbsBitmap* aBmp, CFbsBitmap* aAlpha);
		void Move(TInt aX, TInt aY);
		void MakeEvent(TWsEvent& aEvent, const TPoint& aBasePos) const;
		void Toggle();
		TBool IsOn() const;
	private:
    	void Draw(CBitmapContext& aGc, const TRect& aTargetRect, const TSize& aSize);
	private:
		TRect iRect;
		TPoint iInc;
		TPoint iPos;
		TBool iIsOn;
		CFbsBitmap* iCBmp;
		CFbsBitmap* iAlpha;
	};
	
	
TVirtualCursor::TVirtualCursor() :  iInc(0, 0), iIsOn(EFalse), iCBmp(NULL)
	{	
	}
	
const TInt KMaxMove = 10;	

void TVirtualCursor::Move(TInt aX, TInt aY)
	{
	if(aX > 0 && iInc.iX > 0)
			++iInc.iX;
	else if(aX < 0 && iInc.iX < 0)
			--iInc.iX;
	else
		iInc.iX = aX;

	if(aY > 0 && iInc.iY > 0)
			++iInc.iY;
	else if(aY < 0 && iInc.iY < 0)
			--iInc.iY;
	else
			iInc.iY = aY;
	
	iInc.iX = Min(KMaxMove, iInc.iX); 
	
	iInc.iX = Max(-KMaxMove, iInc.iX);
	
	iInc.iY = Min(KMaxMove, iInc.iY);
	
	iInc.iY =Max(-KMaxMove, iInc.iY);
	
	const TPoint pos = iPos + iInc;
	if(iRect.Contains(pos))
		{
		iPos = pos;
		}
	else
		{
		iInc = TPoint(0, 0);	
		}
	}
	
	
void TVirtualCursor::Toggle()
	{
	iIsOn = !iIsOn;
	}
	
	
TBool TVirtualCursor::IsOn() const
	{
	return iIsOn;
	}
	
void TVirtualCursor::Set(const TRect& aRect, CFbsBitmap* aBmp, CFbsBitmap* aAlpha)
	{
	iRect = aRect;
	iCBmp = aBmp;
	iAlpha = aAlpha;
	}
	
		
void TVirtualCursor::MakeEvent(TWsEvent& aEvent, const TPoint& aBasePos) const
	{
 	aEvent.SetType(EEventPointer),
	aEvent.SetTimeNow();
	TPointerEvent& pointer = *aEvent.Pointer();	
	pointer.iType = TPointerEvent::EButton1Down;
	pointer.iPosition = iPos;
	pointer.iParentPosition = aBasePos;
	}
	
	
void TVirtualCursor::Draw(CBitmapContext& aGc, const TRect& /*aTargetRect*/, const TSize& /*aSize*/)
	{
	if(iIsOn && iCBmp != NULL)
		{
		const TRect rect(TPoint(0, 0), iCBmp->SizeInPixels());
		aGc.AlphaBlendBitmaps(iPos, iCBmp, rect, iAlpha, TPoint(0, 0));
		}
	
	}	

NONSHARABLE_CLASS(TSdlClass)
	{
	public:
		TSdlClass();
		void SetMain(const TMainFunc& aFunc, TInt aFlags, MSDLMainObs* aObs, TInt aExeFlags);
		TInt SdlFlags() const;
		const TMainFunc& Main() const;
		void SendEvent(TInt aEvent, TInt aParam, CSDL* aSDL);
		TInt AppFlags() const; 
		void AppFlags(TInt aFlags); 
	private:
		TMainFunc iFunc;
		TInt iSdlFlags;
		TInt iExeFlags;
		MSDLMainObs* iObs;
	};
	
	
void TSdlClass::AppFlags(TInt aFlags)
	{
	iExeFlags |= aFlags;
	}
	
void TSdlClass::SendEvent(TInt aEvent, TInt aParam, CSDL* aSDL)
	{
	if(iObs != NULL)
		iObs->SDLMainEvent(aEvent, aParam, aSDL);
	}
	
TInt TSdlClass::AppFlags() const
	{
	return iExeFlags;
	}
	
void TSdlClass::SetMain(const TMainFunc& aFunc, TInt aFlags, MSDLMainObs* aObs, TInt aExeFlags)
	{	
	iFunc = aFunc;
	iSdlFlags = aFlags;
	iExeFlags = aExeFlags;
	iObs = aObs;
	}
	
const TMainFunc& TSdlClass::Main() const
	{
	return iFunc;
	}
	
 
 TInt TSdlClass::SdlFlags() const
 	{
 	return iSdlFlags;
 	}
 	

TSdlClass::TSdlClass()
	{
	Mem::FillZ(this, sizeof(this));
	}
 
TSdlClass gSDLClass;    
    
	     
////////////////////////////////////////////////////////////////    

NONSHARABLE_CLASS(CSDLApplication) : public CAknApplication
    {
    public:
    	CSDLApplication();
    private:
        CApaDocument* CreateDocumentL(); 
        TFileName ResourceFileName() const;
        TUid AppDllUid() const; 
      		void FindMeL();
     		TUid iUid;
    };
    
NONSHARABLE_CLASS(CSDLDocument)  : public CEikDocument
    {
    public:
        CSDLDocument(CEikApplication& aApp);
     private:
     	CEikAppUi* CreateAppUiL();
     
     };
     
 ////////////////////////////////////////////////////////////////////
 
     
NONSHARABLE_CLASS(MExitWait)
 	{
 	public:
 		virtual void DoExit(TInt aErr) = 0;
 	};   
 
///////////////////////////////////////////////////////////////////////// 
 	
NONSHARABLE_CLASS(CExitWait) : public CActive
 	{
 	public:
 		CExitWait(MExitWait& aWait);
 		~CExitWait();
 	private:
 		void RunL();
 		void DoCancel();
 	private:
 		MExitWait& iWait;
 		TRequestStatus* iStatusPtr;
 	};
 	
//////////////////////////////////////////////////////////////////////// 

 	
NONSHARABLE_CLASS(CSDLWin) : public CCoeControl
	{
	public:
		void ConstructL(const TRect& aRect);
		RWindow& GetWindow() const;
		void SetNoDraw();
	private:
		void Draw(const TRect& aRect) const;
	private:
		TBool iNoDraw;
	}; 	
	

////////////////////////////////////////////////////////////////////////////	
     
NONSHARABLE_CLASS(CSDLAppUi) : public CAknAppUi, public MExitWait, MSDLObserver
	{
	public:
		~CSDLAppUi();
   	private: // New functions
 		void ConstructL(); 
   	void HandleCommandL(TInt aCommand);
 		void HandleWsEventL(const TWsEvent& aEvent, CCoeControl* aDestination);
 		void HandleResourceChangeL(TInt aType);
        
   		void DoExit(TInt aErr);
   	
   		TInt SdlEvent(TInt aEvent, TInt aParam);
    	TInt SdlThreadEvent(TInt aEvent, TInt aParam);
    
    	void StartL();
    	static TBool StartL(TAny* aThis);
    	
    	TBool ParamEditorL(TDes& aCheat);
    	
    	TBool ProcessCommandParametersL(CApaCommandLine &aCommandLine);
    	
    	void PrepareToExit();
    	void HandleConsoleWindowL();
    	void HandleConsoleWindow();
    	void HandleForegroundEventL(TBool aForeground);
    	
    	static TBool IdleRequestL(TAny* aThis);
    	
    	TBool HandleKeyL(const TWsEvent& aEvent);
    
    	
	private:
		CExitWait* iWait;
		CSDLWin* iSDLWin;
		CSDL* iSdl;
		CIdle* iStarter;
		TBool iExitRequest;
		CDesC8Array* iParams;
		TInt iResOffset;
		CIdle* iIdle;
		TInt iStdOut;
		TVirtualCursor iCursor;
		CFbsBitmap*	iCBmp;
		CFbsBitmap*	iAlpha;
	//	TTime iLastPress;
	//	CSDL::TOrientationMode iOrientation;
	};
	
////////////////////////////////////////////////////////////////////////////////////////7

CApaDocument* CSDLApplication::CreateDocumentL()
	{
	return new (ELeave) CSDLDocument(*this);
	}
	
TUid CSDLApplication::AppDllUid() const
	{
	return iUid;
	}
	
	
CSDLApplication::CSDLApplication()
	{
	TRAPD(err, FindMeL());
	ASSERT(err == KErrNone);
	}	
	
void CSDLApplication::FindMeL()
	{
	RApaLsSession apa;
	User::LeaveIfError(apa.Connect());
	CleanupClosePushL(apa);
	User::LeaveIfError(apa.GetAllApps());
	TFileName name = RProcess().FileName();
	TApaAppInfo info;
	while(apa.GetNextApp(info) == KErrNone)
		{
		if(info.iFullName.CompareF(name) == 0)
			{
			iUid = info.iUid;
			break;
			}
		}
	CleanupStack::PopAndDestroy();
	}
	
TFileName CSDLApplication::ResourceFileName() const
	{
	return KNullDesC();
	}
	
///////////////////////////////////////////////////////////////////////////////////////////

CExitWait::CExitWait(MExitWait& aWait) : CActive(CActive::EPriorityStandard), iWait(aWait)
	{
	CActiveScheduler::Add(this);
	SetActive();
	iStatusPtr = &iStatus;
	}
	
CExitWait::~CExitWait()
	{
	Cancel();
	}
 
void CExitWait::RunL()
	{
	if(iStatusPtr != NULL )
		iWait.DoExit(iStatus.Int());
	}
	
void CExitWait::DoCancel()
	{
	if(iStatusPtr != NULL )
		User::RequestComplete(iStatusPtr , KErrCancel);
	}
	

//////////////////////////////////////////////////////////////////////////////////////////////

CSDLDocument::CSDLDocument(CEikApplication& aApp) : CEikDocument(aApp)
	{}
    
CEikAppUi* CSDLDocument::CreateAppUiL()
	{
	return new (ELeave) CSDLAppUi;
	}
	
///////////////////////////////////////////////////////////////////////////	
	
void CSDLWin:: ConstructL(const TRect& aRect)	
	{
	CreateWindowL();
	SetRect(aRect);
	ActivateL();
	}
	
	
RWindow& CSDLWin::GetWindow() const
	{
	return Window();
	}
	

void CSDLWin::Draw(const TRect& /*aRect*/) const
	{
	if(!iNoDraw)
		{
		CWindowGc& gc = SystemGc();
		gc.SetPenStyle(CGraphicsContext::ESolidPen);
		gc.SetPenColor(KRgbGray);
		gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
		gc.SetBrushColor(0xaaaaaa);
		gc.DrawRect(Rect());
		}
	}	
	
void CSDLWin::SetNoDraw()
	{
	iNoDraw = ETrue;
	}

/////////////////////////////////////////////////////////////////////////			
	
CSDLAppUi::~CSDLAppUi()
	{
	if(iIdle)
		iIdle->Cancel();
	delete iIdle;
	if(iStarter != NULL)
		iStarter->Cancel();
	delete iStarter;
	delete iWait;
	delete iSdl;
	delete iSDLWin;
	delete iParams;
	delete iCBmp;
	delete iAlpha;
	}
	
		
void CSDLAppUi::ConstructL()
 	{
 	BaseConstructL(ENoAppResourceFile | ENoScreenFurniture);
 	
 	
 	RLibrary lib;
 	User::LeaveIfError(lib.Load(_L("sdlexe.dll")));
 	TFileName name = lib.FileName();
 	lib.Close();
 	name.Replace(3, name.Length() - 3, _L("resource\\apps\\sdlexe.rsc"));
 	BaflUtils::NearestLanguageFile(iEikonEnv->FsSession(), name);
 	iResOffset = iCoeEnv->AddResourceFileL(name);
 	
 	name.Replace(name.Length() - 3, 3, _L("mbm"));
	
	TEntry e;
	const TInt err = iEikonEnv->FsSession().Entry(name, e);
	
	iCBmp = iEikonEnv->CreateBitmapL(name, 0);
	iAlpha = iEikonEnv->CreateBitmapL(name, 1);	
 	
 	iIdle = CIdle::NewL(CActive::EPriorityIdle);
 	
 	iSDLWin = new (ELeave) CSDLWin;
 	iSDLWin->ConstructL(ApplicationRect());
 	
 	iSdl = CSDL::NewL(gSDLClass.SdlFlags());
 	
 	gSDLClass.SendEvent(MSDLMainObs::ESDLCreated, 0, iSdl);
 	
 	iSdl->SetObserver(this);
 	iSdl->DisableKeyBlocking(*this);
 	iSdl->SetContainerWindowL(
 					iSDLWin->GetWindow(), 
        			iEikonEnv->WsSession(),
        			*iEikonEnv->ScreenDevice());
    iSdl->AppendOverlay(iCursor, 0);
    
    iCursor.Set(TRect(TPoint(0, 0), iSDLWin->Size()), iCBmp, iAlpha);
        			
    iStarter = CIdle::NewL(CActive::EPriorityLow);   
    iStarter->Start(TCallBack(StartL, this));
    
    
 	}
 	

TBool CSDLAppUi::StartL(TAny* aThis)
	{
	static_cast<CSDLAppUi*>(aThis)->StartL();
	return EFalse;
	}
	
	
void CSDLAppUi::PrepareToExit()
	{
	CAknAppUiBase::PrepareToExit(); //aknappu::PrepareToExit crashes
	iCoeEnv->DeleteResourceFile(iResOffset);
	}
	
TBool CSDLAppUi::ProcessCommandParametersL(CApaCommandLine &aCommandLine)
	{
	const TPtrC8 cmdLine = aCommandLine.TailEnd();
	iParams = new (ELeave) CDesC8ArrayFlat(8);
	MakeCCmdLineL(cmdLine, *iParams);
	return EFalse;
	}
 	
 
 TBool CSDLAppUi::ParamEditorL(TDes& aCheat)
	{
	CAknTextQueryDialog* query = CAknTextQueryDialog::NewL(aCheat);
	CleanupStack::PushL(query);
	query->SetPromptL(_L("Enter parameters"));
	CleanupStack::Pop();
	return query->ExecuteLD(R_PARAMEDITOR);
	}
 	
 void CSDLAppUi::StartL()	
 	{ 		
 	if(gSDLClass.AppFlags() & SDLEnv::EParamQuery)
 		{
 		TBuf8<256> cmd;
 		RFile file;
 		TInt err = file.Open(iEikonEnv->FsSession(), _L("sdl_param.txt"),EFileRead);
 		if(err == KErrNone)
 			{
 			file.Read(cmd);
 			file.Close();	
 			MakeCCmdLineL(cmd, *iParams);
 			}
 		if(err != KErrNone || gSDLClass.AppFlags() & (SDLEnv::EParamQueryDialog ^ SDLEnv::EParamQuery))
 			{
 			TBuf<256> buffer;
 			if(ParamEditorL(buffer))
 				{
 				cmd.Copy(buffer);
 				MakeCCmdLineL(cmd, *iParams);
 				}	
 			}
 		}
 	iWait = new (ELeave) CExitWait(*this);
 	iSdl->CallMainL(gSDLClass.Main(), &iWait->iStatus, iParams, CSDL::ENoParamFlags, 0xA000);
 	}
 	
void CSDLAppUi::HandleCommandL(TInt aCommand)
	{
	switch(aCommand)
		{
		case EAknSoftkeyBack:
 		case EAknSoftkeyExit:
		case EAknCmdExit:
		case EEikCmdExit:
			gSDLClass.AppFlags(SDLEnv::EAllowConsoleView); 
		    if(iWait == NULL || !iWait->IsActive() || iSdl == NULL)
		    	{
		    	Exit();
		    	}	
			  else if(!iExitRequest)
			  	{
			  	iExitRequest = ETrue; //trick how SDL can be closed!
			  	iSdl->Suspend();
			  	} 
			break;
		}
	}
	

TBool CSDLAppUi::HandleKeyL(const TWsEvent& aEvent)
	{
	const TInt type = aEvent.Type();
	if(!(type == EEventKey || type == EEventKeyUp || type == EEventKeyDown))
 			{
 			return ETrue;
 			}
 	const TKeyEvent& key = *aEvent.Key();
	if((key.iScanCode == EStdKeyYes) && (gSDLClass.AppFlags() & SDLEnv::EVirtualMouse))
 		{
 		if(type == EEventKeyUp)
 			{
 			iCursor.Toggle();
 			iSdl->RedrawRequest();	
 			}
 		return EFalse;
		}
	if(iCursor.IsOn())
		{
		switch(key.iScanCode)
			{
			case EStdKeyUpArrow:
				iCursor.Move(0, -1);
				break;
			case EStdKeyDownArrow:
				iCursor.Move(0, 1);
				break;
			case EStdKeyLeftArrow:
				iCursor.Move(-1, 0);
				break;
			case EStdKeyRightArrow:
				iCursor.Move(1, 0);
				break; 
			case EStdKeyDevice3:
				if(type == EEventKeyUp)
					{
					TWsEvent event;
					iCursor.MakeEvent(event, iSDLWin->Position());
					iSdl->AppendWsEvent(event);
					}
				return EFalse;
			default:
				return ETrue;
			}
		iSdl->RedrawRequest();	
		return EFalse;
		}
	return ETrue;
	}
 		
 void CSDLAppUi::HandleWsEventL(const TWsEvent& aEvent, CCoeControl* aDestination)
 	{
 	if(iSdl && iWait && HandleKeyL(aEvent))
 		iSdl->AppendWsEvent(aEvent);
 	CAknAppUi::HandleWsEventL(aEvent, aDestination);
 	}
 	
 void CSDLAppUi::HandleResourceChangeL(TInt aType)
 	{
    CAknAppUi::HandleResourceChangeL(aType);
    if(aType == KEikDynamicLayoutVariantSwitch)
        {  	
        iSDLWin->SetRect(ApplicationRect());
      	iSdl->SetContainerWindowL(
      				iSDLWin->GetWindow(),
        			iEikonEnv->WsSession(),
        			*iEikonEnv->ScreenDevice());
        }
 	}
 	
 	
void CSDLAppUi::DoExit(TInt/*Err*/)
   	{
   	iExitRequest = ETrue;
   	Exit();
   	}

    
 TInt CSDLAppUi::SdlThreadEvent(TInt aEvent, TInt /*aParam*/)    
	{
	switch(aEvent)
		{
		case MSDLObserver::EEventResume:
			break;
		case MSDLObserver::EEventSuspend:
			if(iExitRequest)
				return MSDLObserver::ESuspendNoSuspend;
			break;
		case MSDLObserver::EEventWindowReserved:
			break;
		case MSDLObserver::EEventWindowNotAvailable:
			break;
		case MSDLObserver::EEventScreenSizeChanged:
            break;
		}
	return MSDLObserver::EParameterNone;	
	}
	    
TInt CSDLAppUi::SdlEvent(TInt aEvent, TInt /*aParam*/)    
	{
	switch(aEvent)
		{
		case MSDLObserver::EEventResume:
			break;
		case MSDLObserver::EEventSuspend:
			if(iExitRequest)
				return MSDLObserver::ESuspendNoSuspend;
			break;
		case MSDLObserver::EEventWindowReserved:
			break;
		case MSDLObserver::EEventWindowNotAvailable:
			{
			TRAP_IGNORE(HandleConsoleWindowL());
			}
			break;
		case MSDLObserver::EEventScreenSizeChanged:
     		break;
		case MSDLObserver::EEventKeyMapInit:
			break;
		case MSDLObserver::EEventMainExit:
			if(iStdOut != 0)
				{
				gSDLClass.AppFlags(SDLEnv::EAllowConsoleView); 
				iEikonEnv->WsSession().SetWindowGroupOrdinalPosition(iStdOut, 0);
				}
			break;
		}
	return MSDLObserver::EParameterNone;
	}
	
void CSDLAppUi::HandleForegroundEventL(TBool aForeground)
	{
	CAknAppUi::HandleForegroundEventL(aForeground);	
	if(!aForeground)
		HandleConsoleWindow();
	}
	
void CSDLAppUi::HandleConsoleWindow()
	{
	if(!iIdle->IsActive())
		iIdle->Start(TCallBack(IdleRequestL, this));
	}
	
TBool CSDLAppUi::IdleRequestL(TAny* aThis)
	{
	static_cast<CSDLAppUi*>(aThis)->HandleConsoleWindowL();
	return EFalse;
	}

void CSDLAppUi::HandleConsoleWindowL()
	{
	if(gSDLClass.AppFlags() & SDLEnv::EAllowConsoleView)
		{
		return;
		}
	RWsSession& ses = iEikonEnv->WsSession();
	const TInt focus = ses.GetFocusWindowGroup();
	CApaWindowGroupName* name = CApaWindowGroupName::NewLC(ses, focus);
	const TPtrC caption = name->Caption();
	if(0 == caption.CompareF(_L("STDOUT")))
		{
		iStdOut = focus;
		ses.SetWindowGroupOrdinalPosition(iEikonEnv->RootWin().Identifier(), 0);
		}
	CleanupStack::PopAndDestroy(); //name
	}
	
	
////////////////////////////////////////////////////////////////////////


CApaApplication* NewApplication()
    {
    return new CSDLApplication();
    }

	
EXPORT_C TInt SDLEnv::SetMain(const TMainFunc& aFunc, TInt aSdlFlags, MSDLMainObs* aObs, TInt aSdlExeFlags)
	{
	gSDLClass.SetMain(aFunc, aSdlFlags, aObs, aSdlExeFlags);
  	return EikStart::RunApplication(NewApplication);
	}	
	
//////////////////////////////////////////////////////////////////////

TInt SDLUiPrint(const TDesC8& /*aInfo*/)
    {
    return KErrNotFound;
    }