websrv_pub/web_service_connection_api/inc/MSenServiceConsumer.h
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     1 /*
       
     2 * Copyright (c) 2002-2005 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:    Callback interface for service consumers        
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 #ifndef M_SEN_SERVICE_CONSUMER_H
       
    22 #define M_SEN_SERVICE_CONSUMER_H
       
    23 
       
    24 const TUid KSenInterfaceUidFilesObserver            = { 0x101F9742 }; // MSenFilesObserver
       
    25 const TUid KSenInterfaceUidCoBrandingObserver       = { 0x10282C6C }; // MSenCoBrandingObserver
       
    26 const TUid KSenInterfaceUidAlrObserver              = { 0x10282C6D }; // MMobilityProtocolResp
       
    27 const TUid KSenInterfaceUidUserinfoProvider         = { 0x10282C6E }; // MSenUserInfoProvider
       
    28 const TUid KSenInterfaceUidAuthenticationProvider   = { 0x10282C6F }; // MSenAuthenticationProvider
       
    29 const TUid KSenInterfaceUidHostletConsumer          = { 0xE760F697 }; // MSenAuthenticationProvider 
       
    30 
       
    31 
       
    32 // CLASS DECLARATION
       
    33 
       
    34 /**
       
    35  * Callback interface for service consumers
       
    36  */
       
    37 class MSenServiceConsumer
       
    38     {
       
    39     public: 
       
    40         
       
    41         // New functions
       
    42         
       
    43         /**
       
    44         * Callback, which is invoked when a message is received from invoked service.
       
    45         * Inside this method, it is guarenteed, that the TxnId() getter provided by
       
    46         * CSenServiceConnection class will return valid transaction ID. This allows 
       
    47         * one to map the ID of sent request, returned from CSenServiceConnection::SendL
       
    48         * with the response that is provided in this callback.
       
    49         * @param aMessage incoming message.
       
    50         */
       
    51         virtual void HandleMessageL(const TDesC8& aMessage) = 0;
       
    52 
       
    53         /**
       
    54         * Callback, which is invoked when an error message is received from invoked service.
       
    55         * Inside this method, it is guarenteed, that the TxnId() getter provided by
       
    56         * CSenServiceConnection class will return valid transaction ID. This allows 
       
    57         * one to map the ID of sent request, returned from CSenServiceConnection::SendL
       
    58         * with the response that is provided in this callback.
       
    59         * @param aErrorCode is the error code (negative number)
       
    60         * Error codes are some of the following:
       
    61         * KErrSenNotInitialized             Connection hasn't been initialized.
       
    62         * KErrConnectionInitializing        Connection is still initializing.
       
    63         * KErrSubmitting                    Submitting a message failed, 
       
    64         *                                   e.g. tried to send a NULL message.
       
    65         * KErrConnectionExpired             Connection has expired and needs to be
       
    66         *                                   renewed.
       
    67         * KErrSenSoapFault                  A SOAP fault occurred, aErrorMessage should 
       
    68         *                                   contain more detailed information.
       
    69         * KErrSenInternal                   Internal error in Web Services 
       
    70         *                                   framework
       
    71         * KErrUnknown                       An unexpected major error has occurred
       
    72         *                                   and cause is unknown.
       
    73         * Other possible error codes can be HTTP error codes or 
       
    74         * system-wide Symbian error codes.
       
    75         * @param aErrorMessage contains the error message data; with SOAP based services,
       
    76         * possibly a SOAP fault as XML.
       
    77         */
       
    78         virtual void HandleErrorL(const TInt aErrorCode, 
       
    79                                   const TDesC8& aErrorMessage) = 0;
       
    80 
       
    81         /**
       
    82         * This method is called when the status of the connection
       
    83         * to the service changes.
       
    84         * @param aStatus is connection state indicator, which
       
    85         * could be specified by the actual service invocation framework
       
    86         * implementation. The following status codes are possible for
       
    87         * any installed framework:
       
    88         * KSenConnectionStatusNew              Connection is being initialized, but not yet ready.
       
    89         * KSenConnectionStatusReady            Connection is ready to be used. For example, SubmitL()
       
    90         *                                      and SendL() methods (depending of framework) are in
       
    91         *                                      invocable state.
       
    92         * KSenConnectionStatusExpired          Connection is expired. Typically, a new connection
       
    93         *                                      needs next to be initialized in order to communicate
       
    94         *                                      with the underlying service behind this service
       
    95         *                                      connection.
       
    96         */
       
    97         virtual void SetStatus(const TInt aStatus) = 0;
       
    98     };
       
    99 
       
   100 /**
       
   101  * Callback interface for transfer progress observer. Typically,
       
   102  * this interface is implemented by applications that want to 
       
   103  * monitor how many bytes (of a file, request, or response) have
       
   104  * been sent or received during a transaction. Callback is thus
       
   105  * often integrated to progress bar implementations in UI layer.
       
   106  * Note: UID of this interface is KSenInterfaceUidFilesObserver.
       
   107  */
       
   108 class MSenFilesObserver
       
   109     {
       
   110     public:
       
   111     /**
       
   112     * This method is called when new part of BLOB is sent or received.
       
   113     *
       
   114     * @param aTxnId Transaction ID.
       
   115     * @param aIncoming ETrue if it is incoming BLOB, EFalse if outgoing.
       
   116     * @param aMessage SOAP message for incoming messages with BLOBs.
       
   117     * @param aCid CID of current BLOB.
       
   118     * @param aProgress Count of sent/received BLOB bytes.
       
   119     */
       
   120     virtual void TransferProgress( TInt aTxnId, 
       
   121                                    TBool aIncoming, 
       
   122                                    const TDesC8& aMessage,
       
   123                                    const TDesC8& aCid, 
       
   124                                    TInt aProgress) = 0;
       
   125     };
       
   126 class MSenHostletConsumer
       
   127     {
       
   128     public:
       
   129     virtual void SetConnectionId( TInt aConnectionId ) = 0; 
       
   130     };    
       
   131 /**
       
   132  * Callback interface for extended consumer interface.
       
   133  * When this interface is provided to service connection as constructor
       
   134  * argument, the service connection (web services stack) can later on 
       
   135  * query for a variety of different interfaces, extensions, from the
       
   136  * application. Each extension (interface) is has unique identifier (UID).
       
   137  */    
       
   138 class MSenExtendedConsumerInterface
       
   139     {       
       
   140     public: 
       
   141         /**
       
   142         * Service connection calls this method several times, passing a different
       
   143         * UID per each call. If application wants to provide particular interface
       
   144         * to service connection (web services stack), it needs to return a pointer
       
   145         * to such M-class as a return value of this method. For any interface, that
       
   146         * application has not implemented, it is supposed to return NULL.
       
   147         * @param aUID is the unique identifier of some interface
       
   148         * @return value should be a valid (void) pointer to any interface implemented
       
   149         * by the application. NULL signalizes that application does not provide interface
       
   150         * for give UID. 
       
   151         */    
       
   152 	    inline virtual TAny* GetInterfaceByUid( TUid /* aUID */ ) { return NULL; };
       
   153     };
       
   154 
       
   155 #endif // M_SEN_SERVICE_CONSUMER_H
       
   156 
       
   157 // End of File