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/*
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* Copyright (c) 2005-2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: CLandmarkCmdBase class
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*
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*/
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#ifndef __CLANDMARKCMDBASE_H__
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#define __CLANDMARKCMDBASE_H__
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// INCLUDES
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#include <e32base.h>
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//FORWARD DECLARATION
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class CLandmarkHandler;
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class CLandmarkFilter;
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class MLandmarkObserver;
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class CPosLmOperation;
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class CLandmarkManageObjects;
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/**
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* CLandmarkCmdBase
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* This class inherits from CActive.
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* This forms the base class for all active objects related to landmarks database async requests.
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* TransactionId() returns the transaction id of the active object.
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* StartL ( CLandmarkHandler* aHandle, TInt32 aTransactionId,
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* CLandmarkFilter* aFilter ) is a pure virtual function that has to be implemented.
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*/
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// CLASS DECLARATION
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NONSHARABLE_CLASS(CLandmarkCmdBase): public CActive
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{
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public: //destructor
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/**
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* ~CLandmarkCmdBase.
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* Destructor.
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*/
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virtual ~CLandmarkCmdBase()
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{}
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/**
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* TransactionId.
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* @return The transaction id of the active object.
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*/
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inline TInt32 TransactionId();
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/**
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* StartL.
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* This function has to be implemented for starting the asynchronous search operation.
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* @param aHandle The CLandmarkHandler instance that has the handle to the database
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* on which the search operation is to be made.
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* @param aTransactionId The transaction id assigned to the asynchronous call.
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* @param aFilter The filter to be used for the search.
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*/
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virtual void StartL ( CLandmarkHandler* aHandle, TInt32 aTransactionId,
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CLandmarkFilter& aFilter ) = 0;
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protected: //constructor
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/**
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* CLandmarkCmdBase.
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* Constructor.
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*/
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inline CLandmarkCmdBase();
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protected: // Data members
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/**
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* iTransactionId
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* The tranaction id assigned to aync request.
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*/
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TInt32 iTransactionId;
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/**
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* iObserver
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* The handle to the MLandmarkObserver.
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*/
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MLandmarkObserver* iObserver;
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/**
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* iHandle
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* The handle to the CLandmarkHandler.
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*/
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CLandmarkHandler* iHandle;
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/**
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* iSearchOperation
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* The handle to the CPosLmOperation.
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*/
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CPosLmOperation* iSearchOperation;
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/**
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* iManageObjects
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* The handle to the garbage collector.
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*/
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CLandmarkManageObjects* iManageObjects;
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/**
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* iProgress
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* To keep track of search progress.
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*/
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TReal32 iProgress;
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};
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#include "clandmarkcmdbase.inl"
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#endif // __CLANDMARKCMDBASE_H__
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// End of File
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