bluetoothengine/btnotif/inc/btnotifier.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 15:08:36 +0300
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/*
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* Copyright (c) 2002 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 "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:  Declares Bluetooth notifiers base class.
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*
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*/
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#ifndef BTNOTIFIERBASE_H
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#define BTNOTIFIERBASE_H
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// INCLUDES
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#include "btnotif.h"
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#include "btnotifuiutil.h"
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#include <eikenv.h>
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#include <btdevice.h>
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#include <btengdevman.h>
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// CONSTANTS
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// Literals for resource and bitmap files ( drive, directory, filename(s) )
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const TUid KBTInquiryChannel            = {0x00000601}; // Channel for inquiry notifier
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const TUid KBTAuthorisationChannel      = {0x00000602}; // Channel for PIN query notifier
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const TUid KBTAuthenticationChannel     = {0x00000603}; // Channel for authorisation notifier
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const TUid KBTBBEventChannel            = {0x00000604}; // Channel for baseband event notifier
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const TUid KBTObexPINChannel            = {0x00000605}; // Channel for OBEX PIN notifier
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const TUid KBTPowerModeChannel          = {0x00000606}; // Channel for power mode notifier
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const TUid KBTAudioAccessoryChannel     = {0x00000607}; // Channel for audio accessory notifier
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const TUid KBTLowMemoryChannel          = {0x00000608}; // Channel for low memory notifier
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const TUid KBTPairedDeviceSettingChannel  = {0x00000610}; 
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// FORWARD DECLARATIONS
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class CBTEngSettings;
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enum TBTRegistryQueryState
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{
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	ENoQuery=0,
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	EQueryPaired=1,
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	EQueryUsed=2,
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	ESetDeviceAuthorizeState,
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	ESetDeviceBlocked,
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	ESetDeviceUnblocked,
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};
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// CLASS DECLARATION
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/**
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* This class is the base class for all notifiers.
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*/
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NONSHARABLE_CLASS(CBTNotifierBase): public CBase, public MEikSrvNotifierBase2, MBTEngDevManObserver
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    {
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    public: // Constructors and destructor
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        /**
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        * Destructor.
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        */
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        virtual ~CBTNotifierBase();
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    protected: // Constructors and destructor
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        /**
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        * C++ default constructor.
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        */
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        CBTNotifierBase();
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        /**
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        * Symbian 2nd phase constructor.
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        */
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        virtual void ConstructL();
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    protected: // New functions
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        /**
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        * Used in asynchronous notifier launch to store received parameters 
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        * into members variables and make needed initializations.        
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        * @param aBuffer A buffer containing received parameters
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        * @param aReturnVal The return value to be passed back.
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        * @param aMessage Should be completed when the notifier is deactivated.
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        * @return None.
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        */
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        virtual void GetParamsL(const TDesC8& aBuffer, 
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                                TInt aReplySlot, 
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                                const RMessagePtr2& aMessage)=0;
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        /**
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        * A utility function for checking whether autolock is on.
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        * @param None.
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        * @return A boolean according to autolock state.
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        */
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        TBool AutoLockOnL();
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        /**
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        * A utility function for setting the power status of Bluetooth.
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        * If the power is not on the user will be presented a query.
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        * @return ETrue if BT is turned on successfully; EFalse otherwise
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        */
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        TBool CheckAndSetPowerOnL();
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		/**
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		* A function for setting BT name 
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		* @return ETrue if BT name is set successfully; EFalse otherwise
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		*/
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		TBool AskLocalBTNameQueryL();
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        /**
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		* Check if there is any existing connection to audio profiles from 
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		* the same device
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		* @return ETrue if the device is connected.
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		*/
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		TBool IsExistingConnectionToAudioL(const TBTDevAddr& aDevAddr);
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		/**
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		* Complete Client/Server message and Nulled the reply slot.
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		* @param aErr  Error code for client notification.
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		* @return None
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		*/
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		void CompleteMessage(TInt aErr);
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       /**
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        * Complete Client/Server message and Nulled the reply slot.
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        * @param aErr  Error code for client notification.
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        * @return None
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        */
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        void CompleteMessage(TInt aValueToReplySlot, TInt aErr);
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       /**
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        * Complete Client/Server message and Nulled the reply slot.
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        * @param aErr  Error code for client notification.
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        * @return None
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        */
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        void CompleteMessage(const TDesC8& aDesToReplySlot, TInt aErr);
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		/**
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		* Checks from central repository whether the Bluetooth friendly name 
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        * has been modified .
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		* @return ETure if the name has been modified.
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		*/
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		TBool IsLocalNameModifiedL();
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		/**
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		 * Get the device information from BT Registry by the given address.
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		 */
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		void GetDeviceFromRegL(const TBTDevAddr& aAddr);
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		/**
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		 * virtual function to be ovewritten by sub-classes.
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		 * Will be called when Getting Device by BTEng DevMan is completed.
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		 * @param aDev the device from registry if it is not null. indicates either a failure
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		 *             or the device is not available in registry. 
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		 */
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		virtual void HandleGetDeviceCompletedL(const CBTDevice* aDev);
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        /**
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         * Asks the user if s/he want's to block the device in question
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         * Does not block the device. That is left to the caller.
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         * NOTE: Cannot be called while iAuthQueryDlg is active.
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         */
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        void QueryBlockDeviceL();
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        /**
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         * Set BTDevice's security setting to blocked and modify device
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         * @param None
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         * @return None
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         */
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        void DoBlockDevice();
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        /**
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         * Set BTDevice's security setting to un/authorized and modify device
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         * @param aTrust Set authorized if ETrue; otherwise, unauthorized.
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         * @return None
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         */
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        void ChangeAuthorizeState( TBool aTrust);
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        /**
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         * Checks if the user is queried too often, and handle the result.
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         * @return None
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         */
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        void CheckAndHandleQueryIntervalL();
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    private:
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        void DoHandleGetDevicesCompleteL(TInt aErr, CBTDeviceArray* aDeviceArray );
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    protected: // Functions from base classes
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        /**
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        * From MEikSrvNotifierBase2 Called when a notifier is first loaded 
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        * to allow any initial construction that is required.
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        * @param None.
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        * @return A structure containing priority and channel info.
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        */
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        virtual TNotifierInfo RegisterL()=0;
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        /**
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        * From MEikSrvNotifierBase2 The notifier has been deactivated 
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        * so resources can be freed and outstanding messages completed.
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        * @param None.
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        * @return None.
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        */
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        virtual void Cancel();
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#ifdef __SERIES60_HELP
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		/** This is used to create TCallBack to help.
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		 * @param TCoeHelpContext. Must be instance TCoeHelpContext, or NULL.
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		 * If null this will open help about blocked devices.,
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		 * @return KErrNone
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		 */
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		static TInt LaunchHelp(TAny *TCoeHelpContext=NULL);
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#endif        
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    private: // Functions from base classes        
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        /**
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        * From MEikSrvNotifierBase2 Called when all resources allocated 
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        * by notifiers should be freed.
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        * @param None.
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        * @return None.
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        */
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        virtual void Release();
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        /**
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        * From MEikSrvNotifierBase2 Return the priority a notifier takes 
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        * and the channels it acts on.
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        * @param None.
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        * @return A structure containing priority and channel info.
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        */
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        virtual TNotifierInfo Info() const;
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        /**
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        * From MEikSrvNotifierBase2 Synchronic notifier launch.        
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        * @param aBuffer Received parameter data.
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        * @return A pointer to return value.
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        */
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        virtual TPtrC8 StartL(const TDesC8& aBuffer);
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        /**
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        * From MEikSrvNotifierBase2 Asynchronic notifier launch.
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        * @param aBuffer A buffer containing received parameters
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        * @param aReturnVal The return value to be passed back.
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        * @param aMessage Should be completed when the notifier is deactivated.
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        * @return A pointer to return value.
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        */
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        virtual void StartL(const TDesC8& aBuffer, TInt aReplySlot, const RMessagePtr2& aMessage);
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        /**
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        * From MEikSrvNotifierBase2 Updates a currently active notifier.
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        * @param aBuffer The updated data.
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        * @return A pointer to return value.
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        */
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        virtual TPtrC8 UpdateL(const TDesC8& aBuffer);        
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        /**
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         * From MBTEngDevManObserver
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         * Indicates to the caller that adding, deleting or modifying a device 
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         * has completed.
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         */
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        virtual void HandleDevManComplete(TInt aErr);
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        /**
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         * From MBTEngDevManObserver
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         * Call back function when GetDevices() request is completed.
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         * @param aErr Status information, if there is an error.
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         * @param aDeviceArray Array of devices that match the given criteria 
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         *                     (the array provided by the calller).
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         */
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        void HandleGetDevicesComplete( TInt aErr, CBTDeviceArray* aDeviceArray );
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        /**
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         * Checks the timestamp since last query.
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         * @return true if too often
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         */
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        TBool CheckQueryInterval();
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    protected: // Data
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        RMessagePtr2                iMessage;               // Received message
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        TInt                        iReplySlot;             // Reply slot
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        TNotifierInfo               iInfo;                  // Notifier parameters structure
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        TBTRegistryQueryState       iBTRegistryQueryState;
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        CBTDeviceArray*             iDeviceArray;  // for getting device from registry
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        CBTDevice*                  iDevice;                // Current Bluetooth device
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        TBTDevAddr                  iBTAddr; // Gotten from PckBuffer, constant no matter how iDevice changes.
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        CBTNotifUIUtil*             iNotifUiUtil;           // Utility to show UI notes & queries
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        CBTEngSettings*             iBTEngSettings;
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        TBool                       iIsCoverUI;
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0
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    private:
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        CBTEngDevMan*               iDevMan;  // for BT registry manipulation
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0
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    };
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#endif
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// End of File