--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phonesrv_plat/converged_call_provider_api/inc/mccptransferprovider.h	Tue Feb 02 01:11:09 2010 +0200
@@ -0,0 +1,139 @@
+/*
+* 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:  CCP transfer functionality for a call.
+*
+*/
+
+
+#ifndef MCCPTRANSFERPROVIDER_H
+#define MCCPTRANSFERPROVIDER_H
+
+//  INCLUDES
+#include <e32cmn.h> // TDesC
+
+class MCCPCall;
+class MCCPTransferObserver;
+
+/**
+* Call transfer methods. In case plug-in support call transferring these methods can be fetched from 
+* MCCPCall::TransferProviderL.
+* MCCPTransferObserver is used for transfer specific events. 
+* MCCPCallObserver is used for general call related status, event, error etc notifications.
+*
+*  @since S60 3.2
+*/
+class MCCPTransferProvider
+	{
+protected:
+
+    /** 
+    * Protected destructor. Object cannot be deleted from plug-in client (CCE).
+    * @since S60 3.2
+    */
+    virtual inline ~MCCPTransferProvider() {};
+	
+public:
+
+    /**
+	* Attended transfer to given call recipient.
+	* There needs to exist two calls. a call between A-B and A-C. A wants to transfer the call to B-C. 
+	* Both calls A-B and A-C will be disconnected after transfer.
+	* In above case C will be the aTransferTargetCall call recipient. B is the recipient of the 
+	* current call between A-B - called on A's call object transfer provider. 
+	* The A-B call is on hold.
+    * Actual request result indication comes via observer classes
+	* @param aTransferTargetCall Call containing the transfer target info.
+    * @return KErrNone if request was started succesfully. 
+    * @return KErrNotReady if call is not in connected or on-hold state.
+    * @return KErrArgument transfer traget address was illegal.
+    * @pre Call state is MCCPCallObserver::ECCPStateConnected or MCCPCallObserver::ECCPStateHold
+	* @since S60 3.2
+	*/
+	virtual TInt AttendedTransfer( MCCPCall& aTransferTargetCall ) = 0;
+
+    /**
+    * TODO is this used at all? remove? only the call param one is used?
+	* Attended transfer to given address. There does not need to be 
+	* a current call between the given transfer target.
+    * Actual request result indication comes via observer class
+	* @param aTransferTarget Transfer target address
+    * @return KErrNone if request was started succesfully. 
+    * @return KErrNotReady if call is not in connected or on-hold state.
+    * @return KErrArgument transfer address was illegal.
+    * @pre Call state is MCCPCallObserver::ECCPStateConnected or MCCPCallObserver::ECCPStateHold
+	* @since S60 3.2
+	*/
+	virtual TInt AttendedTransfer( const TDesC& aTransferTarget ) = 0;
+
+	/**
+	* Unattended transfer. Call is requested to be transferred to given address.
+	* After MCCPTransferObserver::ECCPRemoteTransferring event current call will be 
+	* disconnected and no transfer status is checked from the operation. 
+    * Actual request result indication comes via observer classes
+	* @since S60 3.2
+	* @param aTransferTarget Address of the target
+    * @return KErrNone if request was started succesfully. 
+    * @return KErrNotReady if call is not in connected or on-hold state.
+    * @return KErrArgument transfer address was illegal.
+    * @pre Call state is MCCPCallObserver::ECCPStateConnected or MCCPCallObserver::ECCPStateHold
+	*/
+	virtual TInt UnattendedTransfer( const TDesC& aTransferTarget ) = 0;
+
+	/**
+	* Accept incoming call transfer request from the call remote party.
+    * Actual request result indication comes via observer class
+	* @since Series 60 3.2
+	* @param aAccept ETrue - accept transfer, EFalse do not accept transfer request.
+    * @return KErrNone if request was started succesfully. 
+    * @return KErrNotReady if call is not in connected or on-hold state.
+    * @return KErrArgument transfer address was illegal.
+    * @pre Call state is MCCPCallObserver::ECCPStateConnected or MCCPCallObserver::ECCPStateHold
+	* @pre MCCPObserver::CallCreated is called with the newly created call
+	*/
+	virtual TInt AcceptTransfer( const TBool aAccept ) = 0;
+	  
+    /**
+    * When the other end of the call has requested call transfer to third party it is notified to 
+    * MCCPTransferObserver::TransferEventOccurred(MCCPTransferObserver::ECCPRemoteTransferring).
+    * The new recipient of the call can be fetched via this method.
+	* @since Series 60 3.2
+	* @param none
+	* @return new recipient for the call after transfer
+	* @return KNullDesC if no transfer target is available
+    * @pre Call state is MCCPCallObserver::ECCPStateConnected or MCCPCallObserver::ECCPStateHold
+	* @pre MCCPObserver::CallCreated is called with the newly created call
+	*/
+	virtual const TDesC& TransferTarget() const = 0;
+	
+    /**
+    * Add an observer for transfer related events.
+    * Currently CCE will set only one observer.
+    * @since S60 v3.2
+    * @param aObserver Observer to add.
+    * @return none
+    * @leave system error if observer adding fails
+    */
+    virtual void AddObserverL( const MCCPTransferObserver& aObserver ) = 0;
+
+    /**
+    * Remove an observer.
+    * @since S60 v3.2
+    * @param aObserver Observer to remove.
+    * @return KErrNone if removed succesfully. 
+    * @return KErrNotFound if observer was not found.
+    */
+    virtual TInt RemoveObserver( const MCCPTransferObserver& aObserver ) = 0;
+    };
+
+#endif // MCCPTRANSFERPROVIDER_H