/*

* 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: 

*       Implementations of SDP queries

*

*/

#ifndef BASRVSDPQUERY_H

#define BASRVSDPQUERY_H

#include <e32base.h>

#include <btsdp.h>

#include <bt_sock.h>

#include <btmanclient.h>

#include "BTAccInfo.h"

#include "basrvactive.h"

class TBTDevAddr;

class CSdpSearchPattern;

class TBTSdpAttrInt

    {

public:

    TUUID iUUID;   // The UUID of the service. Must be specified by caller.

    TUint16 iAttrID;  // The Attribute ID. Must be specified by the caller.

    TUint iAttrValue; // The value of the attribute if this is found in the device.

    };

class MBasrvSdpQuerier

    {

public:

    /**

     * Indicates GetAccInfo completed.

     * @param aAcc the accinfo if the operation succeeded.

     * @param aErr the completion status

     */

    virtual void GetAccInfoCompletedL(TInt aErr, const TAccInfo* aAcc, const TBTDeviceClass* aCod) = 0;

    };

/**

* The base class for various SDP query strategies

*/

class CBasrvSdpQuery : public CBase, public MSdpAgentNotifier, public MBasrvActiveObserver,

    public MSdpAttributeValueVisitor

   {

public:

   static CBasrvSdpQuery* NewL(MBasrvSdpQuerier& aQuerier);

   ~CBasrvSdpQuery();

   void QueryAccInfoL(const TBTDevAddr& aDevAddr, TBool aTolerateSdpError);

private:    // From MSdpAgentNotifier

	/** 

	* Called when an service record request operation completes.

	*

	* @param aError KErrNone if successful;

	*               KErrEof if there are no more SDP records left to be read; or an SDP error.

	* @param aHandle Service record for which the query was made

	* @param aTotalRecordsCount Total number of matching records

	*/

    void NextRecordRequestComplete(

        TInt aError, 

        TSdpServRecordHandle aHandle,

        TInt aTotalRecordsCount);

	/**

	* Called when an attribute request (CSdpAgent::AttributeRequestL()) wants to 

	* pass up a result.

	*

	* @param aHandle Service record for which the query was made

	* @param aAttrID ID of the attribute obtained

	* @param aAttrValue Attribute value obtained

    */

    void AttributeRequestResult(

        TSdpServRecordHandle aHandle, 

        TSdpAttributeID aAttrID, 

        CSdpAttrValue* aAttrValue);

	/** 

	* Called when an attribute request (CSdpAgent::AttributeRequestL()) wants to 

	* signal the completion of a attribute request.

	*

	* @param aHandle Service record for which the query was made

	* @param aError an error

	*/

    void AttributeRequestComplete(TSdpServRecordHandle aHandle, TInt aError);

    // from base class MSdpAttributeValueVisitor

    /**

     * From MSdpAttributeValueVisitor.

     * Called to pass an attribute value.

     *

     * @since S60 v3.2

     * @param ?arg1 ?description

     */

    void VisitAttributeValueL( CSdpAttrValue &aValue, TSdpElementType aType );

    /**

     * From MSdpAttributeValueVisitor.

     * Called to indicate the start of a list of attribute values. 

     * This call is followed by a call to VisitAttributeValueL() 

     * for each attribute value in the list, and concluded by 

     * a call to EndList().

     *

     * @since S60 v3.2

     * @param ?arg1 ?description

     */

    void StartListL( CSdpAttrValueList &aList );

    /**

     * From MSdpAttributeValueVisitor.

     * Called to indicate the end of a list of attribute values.

     *

     * @since S60 v3.2

     * @param ?arg1 ?description

     */

    void EndListL();

private:

    // From MBasrvActiveObserver

    void RequestCompletedL(CBasrvActive& aActive);

    void CancelRequest(CBasrvActive& aActive);

private:  

    void ConstructL();

    CBasrvSdpQuery(MBasrvSdpQuerier& aQuerier);

    void QueryCompleteL(TInt aStatus);

    void DoNextServiceRecordRequestL();

    void NextRecordRequestCompleteL(

        TInt aError, 

        TSdpServRecordHandle aHandle, 

        TInt aTotalRecordsCount);

    void AttributeRequestResultL(

        TSdpServRecordHandle aHandle, 

        TSdpAttributeID aAttrID, 

        CSdpAttrValue* aAttrValue);

    void AttributeRequestCompleteL(TSdpServRecordHandle aHandle, TInt aError);

    void MakeAccInfo(TAccInfo& aInfo);

private:

    MBasrvSdpQuerier& iQuerier; // not own

    CSdpAgent* iSdpAgent;

    CSdpSearchPattern* iSdpSearchPattern;

    RArray<TBTSdpAttrInt> iServiceAttrs;

    TInt iCursor;

    TBTDevAddr iAddr;

    CBasrvActive* iActive;

    RBTRegServ iRegServ;

    RBTRegistry iReg;

	CBTRegistryResponse* iResponse;

    TBool iTolerateSdpError;

    };

#endif      // BASRVSDPQUERY_H