1 /*

     2 * Copyright (c) 2004-2007 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:  

    15 *

    16 */

    17 

    18 

    19 #ifndef CDISCOVERYGUARD_H

    20 #define CDISCOVERYGUARD_H

    21 

    22 #include <e32base.h>

    23 

    24 class RImagePrintClient;

    25 class MPrinterDiscoveryObserver;

    26 class TDiscoveryGuardData;

    27 

    28 class CDiscoveryGuard : public CActive

    29 	{

    30 	public:

    31 

    32 		/**

    33          *	2-phase constructor

    34          *	

    35 		 *	@param aClient client for communication with server process 

    36          *  @return new object

    37          */

    38 		IMPORT_C static CDiscoveryGuard* NewL( RImagePrintClient& aClient );

    39 		

    40 		/**

    41          *	Destructor         

    42          */

    43 		IMPORT_C ~CDiscoveryGuard();	

    44 		

    45 	public:

    46 	

    47 		/**

    48          *	Start printer discovery (and watching for discovery events)

    49          *	for one or several protocols

    50          *	

    51 		 *	@param aObserver observer for notifications about discovery events

    52 		 *	@param aProtocols OR:ed protocol ids

    53          *  @return error code

    54          */

    55 		IMPORT_C TInt Guard( MPrinterDiscoveryObserver& aObserver, TUint aProtocols );

    56 

    57 	private:

    58 

    59 		CDiscoveryGuard( RImagePrintClient& aClient );

    60 		void ConstructL();

    61 		

    62 	private: // from CActive

    63 	

    64 		void RunL();

    65 		void DoCancel();

    66 		

    67 	private: // data

    68 	

    69 		RImagePrintClient& iClient;

    70 		MPrinterDiscoveryObserver* iObserver;

    71 		TDiscoveryGuardData* iData;

    72 	};

    73 

    74 

    75 #endif // CDISCOVERYGUARD_H

    76 

    77 //  End of File