phoneclientserver/phoneclient/Inc/Messenger/RPhCltMessenger.h
changeset 0 ff3b6d0fd310
child 12 ae8abd0db65c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phoneclientserver/phoneclient/Inc/Messenger/RPhCltMessenger.h	Tue Feb 02 01:11:09 2010 +0200
@@ -0,0 +1,148 @@
+/*
+* Copyright (c) 2004 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:  This class is used to perform messenger originated commands.
+*
+*/
+
+
+#ifndef RPhCltMessenger_H
+#define RPhCltMessenger_H
+
+
+//  INCLUDES
+#include <e32base.h>
+#include <CPhCltMessenger.h>
+
+// FORWARD DECLARATIONS
+class RPhCltServer;
+
+
+/**
+*  Messenger interface: provides two-way communication between 
+*  two or more clients.
+*
+* @lib PhoneClient.lib 
+* @since 3.2
+*  
+*/
+class RPhCltMessenger
+:   public RSubSessionBase
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Constructor.
+        */
+        RPhCltMessenger();
+
+        /**
+        * Desstructor.
+        */
+        ~RPhCltMessenger();
+
+
+    public:
+
+        /**
+        * Open session ready to be sending and receiving messages.
+        *
+        * @param aServer      Pre-opened server session.
+        * @param aCategoryUid Category of messages to be sent or received.
+        *                     Note that there can be many kinds of message uids
+        *                     below one category uid.
+        * @param aDefaultMessageSize The default size of the messages to be sent
+        *                            or received, In bytes. Can be bigger than 
+        *                            KPhCltDefMesSize, but then functionality
+        *                            is not guaranteed.
+        * @return Error code. KErrNone if successful.
+        */
+        TInt Open(
+            RPhCltServer& aServer,
+            const TUid& aCategoryUid,
+            const TInt& aDefaultMessageSize );
+
+
+        /**
+        * Closes the session.
+        */
+        void Close();
+
+
+        /**
+        * Receives next message. No memory is allocated during the operation of
+        * this method.
+        * 
+        * @param aStatus This request will be completed once message has been 
+        *                received.
+        * @param aMessageSize Tells the size of the received message. If smaller
+        *        than the size of the aMessagePayload, then only the beginning 
+        *        of the received message is copied to aMessagePayload.
+        *                     
+        * @param aMessagePayload Payload of the message. Contains the TUid at 
+        *                        the beginning of the message when completed.
+        */ 
+        void Receive(
+            TRequestStatus& aStatus,
+            TInt& aMessageSize,
+            TDes8& aMessagePayload );
+
+
+        /**
+        * Sends message. This is completed only after message has been
+        * delivered to receiver.
+        * No memory is allocated during the operation of this method.
+        * 
+        * @param aStatus This request will be completed once message has been 
+        *                sent.
+        * @param aMessagePayload Payload of the message.
+        */
+        void Send(
+            TRequestStatus& aStatus,
+            const TDesC8& aMessagePayload );
+
+
+        /**
+        * Cancel request. This method should only be called during destruction 
+        * to make sure that messages are not missed.
+        * 
+        * @param aRequest request to be canceled.
+        */
+        void CancelRequest( const TPhCltMessengerRequest& aRequest );
+
+
+        /**
+        * Skip one message. This method should be called only if Receive 
+        * indicates that there is not enough space in aMessagePayload.
+        * Of course, you should attempt to recover, i.e. call Receive with big 
+        * enough aMessagePayload buffer before calling this method.
+        */
+        void Skip();
+
+
+    private:    // Data
+
+        // Container for received message size.
+        TPtr8                               iReceiveMessageSize;
+
+        // Used in Receive and Send methods to contain the parameters.
+        TPhCltMessengerParameters           iMessengerParameters;
+
+        // The packaged version of the iMessengerParameters.
+        TPckg< TPhCltMessengerParameters >  iMesParPckg;
+
+    };
+
+#endif      // RPhCltMessenger_H
+
+// End of File