/*

* Copyright (c) 2007-2008 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:  Implements CSPConferenceCall for CS Call Plug-in

*

*/

#ifndef CSPCONFERENCECALL_H

#define CSPCONFERENCECALL_H

#include <mccpconferencecall.h>

#include <mccpconferencecallobserver.h>

#include <mccpcallobserver.h>

#include <mccpcscall.h>

#include <etel.h>

#include <etelmm.h>

#include "mcspconferencestatusobserver.h"

#include "cspconsts.h"

#include "cspetelconferencecallrequester.h" // For the requester and TConferenceRequestType

class MCCPForwardProvider;

class MCCPTransferProvider;

class MCCPObserver;

class MCSPCallInformation;

class CSPConferenceCallObserver;

class RMobileConferenceCall;

class CSPEtelConferenceStatusMonitor; 

class CSPEtelConferenceEventMonitor;

class CSPEtelConferenceCapsMonitor;

/**

* Call class for CS Call Plug-in. Implements the API defined by CCP in classes

* MCCPCall and MCCPCSCall

*

*  @lib csplugin.dll

*/

class CSPConferenceCall : public CBase,

                          public MCCPConferenceCall,

                          public MCSPConferenceStatusObserver

    {

    public:

        /*

        * Creates a new CSPConferenceCall object.

        * @param aPhone reference to phone object

        * @return pointer to created call object

        * @param aServiceId the service id

        */

        static CSPConferenceCall* NewL( 

                              RMobilePhone& aPhone,

                              MCSPCallInformation& aCallInfo,

                              TUint32 aServiceId );

        /*

        * C++ default destructor

        */

        virtual ~CSPConferenceCall( );

        /** 

        * Getter for observer

        * @return observer for CS calls.

        */

        MCCPCallObserver* Observer() const;

        /**

        * Notifies call specific event to observers.

        * @param aEvent conference event that was occurred

        * @param aCallName the name of the related call object

        */        

        void NotifyEvent( 

            MCCPConferenceCallObserver::TCCPConferenceCallEvent aEvent,

            TName& aCallName );

        /**

        * Notifies non-'call specific' event to observers.

        * @param aEvent conference event that was occurred,

        */        

        void NotifyEvent( 

            MCCPConferenceCallObserver::TCCPConferenceCallEvent aEvent );

        /**

        * Notifies about conference call request related errors.

        */

        void NotifyConferenceError( TCCPConferenceCallError aErr );

        /**

        * Handles caps change.

        * @param aNewCaps new caps

        */

        void ConferenceCapsChanged( TUint32 aNewCaps );

// from base class MCSPConferenceStatusObserver

        /**

        * From MCSPConferenceStatusObserver.

        * Notifies event to observers.

        * @param aStatus new status of the conference call

        */        

        void NotifyStateChange( 

            MCSPConferenceStatusObserver::TCSPConferenceState aStatus );

// from base class MCCPConferenceCall

        /**

        * From MCCPConferenceCall.

        * Adds new call to conference call.

        * @param aCall Call to be added to conference

        * @return Leaves in case of an error. 

        * KErrArgument, KErrNoMemory

        */

        void AddCallL( MCCPCall* aCall );

        /**

        * From MCCPConferenceCall.

        * Removes call from conference call.

        * @param aCall Call to be removed from conference

        * @return In error case leaves. 

        * KErrArgument, KErrNotFound

        */

        void RemoveCallL( MCCPCall* aCall );

        /**

        * From MCCPConferenceCall.

        * Returns number of calls in conference call.

        * @param aCallCount Number of calls in conference.

        * @return KErrNone if succesfull, otherwise system wide error code.

        */

        TInt CallCount( ) const;

        /**

        * From MCCPConferenceCall.

        * Switch to a private call with one call from conference call.

        * @param aCall Call to be removed from conference

        * @return In error case leaves. 

        * KErrArgument, KErrNotFound

        */

        void GoOneToOneL( MCCPCall& aCall );

        /**

        * Adds current calls (1 hold + connected )

        * to part of conference

        * @leave In case of an error system wide error code

        */

        void CurrentCallsToConferenceL();        

        /**

        * From MCCPConferenceCall

        * Returns serviceId

        * @since S60 3.2

        * @return TUint32 ServiceId

        */

        TUint32 ServiceId() const;

        /**

        * From MCCPConferencCall

        * Ends an ongoing call.

        * @since S60 3.2

        */

        TInt HangUp();

        /**

        * From MCCPConferenceCall

        * Puts the specified call on hold.

        * @since S60 3.2

        */

        TInt Hold();

        /**

        * From MCCPConferenceCall

        * Resumes the call.

        * @since S60 3.2

        */

        TInt Resume();

        /**

        * From MCCPConferenceCall

        * Swaps a connected call to its opposite state either active or on hold

        * @since S60 3.2

        */

        TInt Swap();

        /**

        * Adds a new observer for the conference call object.

        * @since S60 3.2

        * @param aObserver the conference observer to be added

        */

        void AddObserverL( const MCCPConferenceCallObserver& aObserver );

        /**

        * Removes an observer.

        * @since S60 3.2

        * @param aObserver the observer to be removed

        * @return system wide error code

        */

        TInt RemoveObserver( const MCCPConferenceCallObserver& aObserver );

        /**

        * Get conference participants.  

        * @since S60 5.0 

        * @param aCallArray array where participating calls are stored 

        * @return system wide error code

        */

        TInt GetCallArray( RPointerArray<MCCPCall>& aCallArray );  

    private:    

        /*

        * C++ default constructor

        * @param aPhone handle to the ETel Phone

        * @param aCallInfo call information 

        * @param aServiceId service id

        */

        CSPConferenceCall( RMobilePhone& aPhone, 

                           MCSPCallInformation& aCallInfo,

                           TUint32 aServiceId  );

        /*

        * Constructing 2nd phase.

        * @since S60 3.2

        * @param aObserver the CCP call observer,

        */

        void ConstructL( );

        /**

        * Get conference state from ETel.  

        * @since S60 5.0 

        * @param aState param for storing conference call state  

        * @return system wide error code

        */

        TInt GetConferenceCallState( 

                MCCPConferenceCallObserver::TCCPConferenceCallState& aState ); 

    private:

      /**

      * Call status monitor.

      * Own.

      */

      CSPEtelConferenceStatusMonitor* iCallStatusMonitor;

      /**

      * Call event monitor.

      * Own.

      */

      CSPEtelConferenceEventMonitor* iCallEventMonitor;

      /**

      * Call caps monitor.

      * Own.

      */

      CSPEtelConferenceCapsMonitor* iCallCapsMonitor;

      /**

      * ETel call object

      */

      RMobileConferenceCall iCall;

      /**

      * ETel phone

      */

      RMobilePhone& iPhone;

      /**

      * Conference call state.

      */ 

      MCCPConferenceCallObserver::TCCPConferenceCallState iCallState;

      /**

      * Makes the asynchronic requests for various purposes.

      */

      CSPEtelConferenceCallRequester* iRequester;

      /**

      * Observer array for conference states, events and errors.

      */      

      RPointerArray<MCCPConferenceCallObserver> iObservers;

      /**

      * Call count for adding call.

      */

      TInt iCallCountForAddCall;

      /**

      * Call Information for resolving call pointers from

      * the call names.

      */

      MCSPCallInformation& iCallInfo;

      /**

      * Service ID

      */

      TUint32 iServiceId;

      /**

      * Call name of a last call added to this conference..

      */

      TName iAddedCallName;

    };

#endif // CSPCONFERENCECALL_H