--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uiacceltk/hitchcock/plugins/alftranseffect/alftranseffectplugin/src/statehandler.cpp	Tue Feb 02 07:56:43 2010 +0200
@@ -0,0 +1,274 @@
+/*
+* Copyright (c) 2006 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:   State machine interface. Used for the statemachine in the 
+*                server drawer to keep track on when a transition should be made
+*                and when not.
+*
+*/
+
+
+#include "statehandler.h"
+#include "states.h"
+#include "uidblock.h"
+#include "uidexception.h"
+#include <alflogger.h>
+
+// ---------------------------------------------------------------------------
+// This LUT defines what fullscreen transitions is of wich type.
+// It is needed by the filter, but is part of platform requirements,
+// so it feels logical to keep it here.
+// ---------------------------------------------------------------------------
+//
+#include  <akntranseffect.h> 
+const CStateHandler::TFullscreenType FullscreenTypeLUT[] = 
+	{
+	CStateHandler::ENone,  						//none
+	CStateHandler::EActivation, //activation
+	CStateHandler::EError,   	//removed action
+	CStateHandler::EStart, 		//start
+	CStateHandler::EStart, 		//start embedded
+	CStateHandler::EExit, 		//exit
+	CStateHandler::EStart, 		//start rect
+	CStateHandler::EStart, 		//start switch
+	CStateHandler::EStart, 		//start switch rect
+	CStateHandler::EExit, 		//exit for end key
+	CStateHandler::EExit,		//exit embedded
+	CStateHandler::EError,      //right?
+	CStateHandler::ELayoutSwitch, //ELayoutSwitch
+	CStateHandler::ELayoutSwitch, //ELayoutSwitch
+	CStateHandler::ELayoutSwitch, //ELayoutSwitch
+	};
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+CStateBase::CStateBase(MAlfDrawerEngine& aEngine, CStateHandler& aHandler) :
+	iEngine(aEngine),
+	iHandler(aHandler)
+	{
+	}
+
+CStateBase::~CStateBase()
+	{
+	}
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+TBool CStateBase::IsBlocked(const TUid& aFromUid, const TUid& aToUid)
+	{
+	return iHandler.IsBlocked(aFromUid, aToUid);
+	}
+	
+
+
+// ---------------------------------------------------------------------------
+// StateHandler Implementation:
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+void CStateHandler::Signal(CStateBase::TSignal aSignal)
+	{
+	CStateBase* newstate = NULL;
+	TRAPD(err, newstate = iState->SignalL(aSignal));
+	if((KErrNone == err) && (NULL != newstate))
+		{
+		delete iState;
+		iState = newstate;
+		}
+	}
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+TBool CStateHandler::IsBlocked(const TUid& aFromUid, const TUid& aToUid)
+	{
+	__ALFFXLOGSTRING2("CStateHandler::IsBlocked - aFromUid: 0x%x, aToUid: 0x%x", aFromUid, aToUid );
+	TInt flags = iEngine.Flags();
+	if(flags & AknTransEffect::TParameter::EActivateExplicitContinue)
+		{
+//		return EFalse;
+		}
+		
+    for(TInt i = iExceptionList.Count() - 1; i >= 0; i--) 
+    	{
+    	if(iExceptionList[i]->IsAllowed(aFromUid,aToUid)) 
+    		{
+    		__ALFFXLOGSTRING("CStateHandler::IsBlocked - return EFalse <<");
+    	    return EFalse;
+    		}
+    	}
+		
+	for(TInt i = iBlockList.Count() - 1; i >= 0; i--) 
+		{
+		if(iBlockList[i]->IsBlocked(aFromUid,aToUid)) 
+			{
+			__ALFFXLOGSTRING("CStateHandler::IsBlocked - return ETrue <<");
+			return ETrue;
+			}
+		}
+	__ALFFXLOGSTRING("CStateHandler::IsBlocked - return EFalse <<");
+	return EFalse;
+	}
+
+// ---------------------------------------------------------------------------
+// OOM condition means block will not be added, this is ok.
+// ---------------------------------------------------------------------------
+//
+void CStateHandler::AddBlockUid(const TUid& aUid)
+	{
+	CFullUidBlock* uidblock = new CFullUidBlock(aUid);
+	if(uidblock)
+		{
+		if(KErrNone != iBlockList.Append(uidblock)) 
+			{
+			//Failed to add, forget about it.
+			delete uidblock;
+			}
+		}
+	}
+
+// ---------------------------------------------------------------------------
+// OOM condition means block will not be added, this is ok.
+// ---------------------------------------------------------------------------
+//
+void CStateHandler::AddBlockUidPair(const TUid& aFromUid, const TUid& aToUid)
+	{
+	CPairedUidBlock* uidblock = new CPairedUidBlock(aFromUid, aToUid);
+	if(uidblock)
+		{
+		if(KErrNone != iBlockList.Append(uidblock))
+			{
+			//Failed to add, forget about it.
+			delete uidblock;
+			}
+		}
+	}
+	
+// ---------------------------------------------------------------------------
+// OOM condition means exception will not be added, this is ok.
+// ---------------------------------------------------------------------------
+//
+void CStateHandler::AddExceptionUid(const TUid& aUid)
+	{
+	CFullUidException* uidexception = new CFullUidException(aUid);
+	if(uidexception)
+		{
+		if(KErrNone != iExceptionList.Append(uidexception)) 
+			{
+			//Failed to add, forget about it.
+			delete uidexception;
+			}
+		}
+	}	
+	
+// ---------------------------------------------------------------------------
+// OOM condition means exception will not be added, this is ok.
+// ---------------------------------------------------------------------------
+//	
+void CStateHandler::AddExceptionUidPair(const TUid& aFromUid, const TUid& aToUid)
+    {
+	CPairedUidException* uidexception = new CPairedUidException(aFromUid, aToUid);
+	if(uidexception)
+		{
+		if(KErrNone != iExceptionList.Append(uidexception))
+			{
+			//Failed to add, forget about it.
+			delete uidexception;
+			}
+		}    
+    }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+void CStateHandler::RemoveBlockUid(const TUid& aUid)
+	{
+	for(TInt i = iBlockList.Count() - 1; i >= 0; i--) 
+		{
+		if(iBlockList[i]->IsBlocked(aUid,aUid)) 
+			{
+			delete iBlockList[i];
+			iBlockList.Remove(i);
+			}
+		}
+	}
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+CStateHandler::TFullscreenType CStateHandler::GetFullscreenType(TUint aAction)
+	{
+	TFullscreenType type = EError;
+	if(aAction < (sizeof(FullscreenTypeLUT) / sizeof(TInt)))
+		{
+		type = FullscreenTypeLUT[aAction];
+		}
+	if(aAction >= AknTransEffect::EAppSpesificEvent)
+		type = EAppSpecific;
+	return type;
+	}
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+CStateHandler::TFullscreenType CStateHandler::GetCurrentFullscreenType()
+	{
+	return GetFullscreenType(iState->StateInfo().iAction);
+	}
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+CStateHandler* CStateHandler::NewL(MAlfDrawerEngine* aEngine)
+	{
+	CStateHandler* self = new (ELeave) CStateHandler(aEngine);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop();
+	return self;
+	}
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+CStateBase::TState CStateHandler::GetState()
+	{
+	return iState->StateInfo().iState;
+	}
+
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+CStateHandler::CStateHandler(MAlfDrawerEngine* aEngine) :
+	iEngine(*aEngine)
+	{
+	}
+
+void CStateHandler::ConstructL()
+	{
+	iState = CRestingState::NewL(iEngine,*this);
+	}
+
+CStateHandler::~CStateHandler()
+	{
+	iBlockList.ResetAndDestroy();
+	iExceptionList.ResetAndDestroy();
+	delete iState;
+	}
+	
+	
+
+