menucontentsrv/srvinc/menusrveng.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 12:55:39 +0200
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/*
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* Copyright (c) 2009 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:
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*
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*/
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#ifndef __MENUSRVENG_H__
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#define __MENUSRVENG_H__
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//  INCLUDES
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#include <e32base.h>
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#include "menuengobserver.h"
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#include "menuengobject.h"
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#include "menusrvengutils.h"
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#include "menusrvattr.h"
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// FORWARD DECLARATION
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class CMenuEng;
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class CMenuSrv;
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class CMenuSrvSession;
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class CTimeout;
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class CMenuSrvAppScanner;
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class CMenuSrvFolderCrNotifier;
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class CMcsSatMonitor;
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class CMcsDrmHandler;
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class CMcsCacheHandler;
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class CMcsChildrenHandler;
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class CMcsRunningAppsHandler;
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class CMcsSuiteHandler;
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class CMcsGetlistHandler;
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/**
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* In release code the macro must be undefined and application 
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* scanning must be enabled!
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* Define the macro only for testing purposes!
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*/
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#undef __TEST_DISABLE_APPSCAN
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// GLOBAL FUNCTIONS
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/**
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* Menu engine instance.
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* Shared by the sessions using the same content file.
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* It is also "shared" by its own iTimedClose timer. The timer keeps this
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* object alive without any sessions, for a short time.
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* It is a reference counting object, but that is only used for sanity
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* checking: this->CObject::iAccessCount == iSessions.Count() + 1.
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*/
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NONSHARABLE_CLASS( CMenuSrvEng ) : public CObject, public MMenuEngObserver
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    {
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public:
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    enum TExtendedAttributes
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        {
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        EMenuAttrTitleName,
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        EMenuAttrShortName,
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        EMenuAttrLongName,
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        EMenuAttrIconFile,
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        EMenuAttrIconId,
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        EMenuAttrMaskId
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        };
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public:     // construction
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    /**
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    * Destructor.
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    */
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    virtual ~CMenuSrvEng();
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    /**
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    * Two-phased constructor. Leaves on failure.
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    * @param aMenuSrv Menu Server.
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    * @param aContentName Content file name.
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    * @return The constructed object.
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    */
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    static CMenuSrvEng* NewL( CMenuSrv& aMenuSrv, const TDesC& aContentName );
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private:    // construction
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    /**
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    * Constructor.
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    * @param aMenuSrv Menu Server.
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    */
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    CMenuSrvEng( CMenuSrv& aMenuSrv );
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    /**
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    * Second-phase constructor.
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    * @param aContentName Content file name.
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    */
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    void ConstructL( const TDesC& aContentName );
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public:     // new methods
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    /**
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    * Get content file name (without extension).
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    * @return Content file name.
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    */
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    const TDesC& ContentName() const { return iContentName; }
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    /**
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    * Get the Engine.
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    * @return Engine.
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    */
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    CMenuEng& Engine() { return *iEng; }
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    /**
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    * Add a session. Ownership not taken, this object only keeps a list of
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    * sessions that are dependent on its engine.
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    * @param aSession Session.
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    */
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    void AddSessionL( CMenuSrvSession* aSession );
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   122
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    /**
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    * Remove a session. Safe to call if not added.
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    * When no more sessions remain dependent on this object, timed
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    * self-deletion is scheduled.
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    */
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    void RemoveSession( CMenuSrvSession* aSession );
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    /**
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    * Get attribute name list.
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    * @since S60 v5.0
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    * @param aList Attribute name list.
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    * @throws System-wide error codes if an error occurs.
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    * @panic None.
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    * 
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    */
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    void GetAttributeListL(
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  		  TInt aId,
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  		  RArray<TPtrC>& aList );
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    /**
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    * Get attribute value.
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    * @since S60 v5.0
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    * @param aAttrName Attribute name.
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    * @param aAttrExists Will be set to indicate whether attribute exists
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    * or not.
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    * @return Attribute value. Empty string if attribute does not exist.
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    */
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    TPtrC GetAttributeL( TInt aId, const TDesC& aAttrName, TBool& aAttrExists );
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    void GetAttributeL( TInt aId, const TDesC& aAttrName, 
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        TBool& aAttrExists, TDes& aAttrVal );
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    //TODO: Add comment
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    TBool InstalledSuiteExist( const TDesC& aSuiteName );
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    //TODO: Add comment
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    void GetSuiteAttribute( const TDesC& aSuiteName, const TDesC& aAttrName, 
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            TBool& aAttrExists, TDes& aAttrVal );
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     /**
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     * Get array of running apps 
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     * 
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     */
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    void GetRunningAppsL(  RArray<TUid>& aArray );
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   168
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    /**
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     * Fetches children count for a folder
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     */
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    TUint GetChildrenCountL( TInt aId );
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    /**
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    * Builds output list for GetList operation and returns result
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    * @param aSerializedInput serialized list with input parameters
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    * 	for GetList operation
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    * @return size of output list
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    */
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    TInt GetListSizeL( const TDesC8& aSerializedInput );
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    /**
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    * Returns serialized list containing result of GetList oepration
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    * @return serialized output list
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    */
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    TPtrC8 GetListDataL( );
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    /**
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    * Closes output buffer.
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    */
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    void CloseOutputBuffer( );
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    /**
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    * Cleans attribute cache. Used in case of no memory.
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    */
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    void CleanAttributeCache( );
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private:    // from MMenuEngObserver
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    void GetExtendedAttributesL( TInt aId, const TDesC& aAttrName, 
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        TBool& aAttrExists, TDes& aAttrVal );
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    void AddToCacheL( TInt aId, const TDesC& aAttrName, TDes& aAttrVal );
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   207
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    /**
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   209
    * Fetches an application native attribute value. 
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    * @param aId item id.
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    * @param aAttrExists ETrue if attribute exist.
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    * @param aAttrVal attribute value.
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    */
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    void ApplicationNativeAttributeL(
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    		TInt aId, 
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    		TBool & aAttrExists,
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    		TDes & aAttrVal );
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    /**
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    * Engine event. Dispatch events to all dependent sessions.
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    * @param aFolder Events relate to this folder. May be 0.
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    * @param aEvents Events.
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    */
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    void EngineEvents( TInt aFolder, TInt aEvents );
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   225
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    /**
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    * Unrecoverable engine error. Dispatch to all dependent sessions.
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    * @param aErr Error code.
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    */
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    void EngineError( TInt aErr );
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    /**
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     * Engine tree reload event.
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     * Run appscanner again.
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     */
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    void EngineTreeReloaded();
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    /**
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    * Fetches an attribute value from the caption info attributes
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    */
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    void CaptionInfoL( TInt aId, const TDesC& aAttrName, 
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        TBool& aExists, TDes& aAttrVal );
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    /**
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    * Fetches an attribute value from the skin icon info attributes
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    */
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    void SkinInfoL( TInt aId, TInt aSelect, TBool& aExists, TDes& aAttrVal  );
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    /**
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    * Fetches the DRM protection attribute value
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    */
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    void AppDrmProtectionL( TInt aId, TBool& aExists, TDes& aAttrVal );
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    /**
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    * Fetches an attribute value from the caption info attributes for application
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    */
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    TPtrC AppCaptionInfoL( const CMenuEngObject& aEngObj,
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        const TDesC& aAttrName, TBool& aExists );
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    /**
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     * Fetches the children_count attribute value (for folders)
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     */
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    void FolderChildrenCountL( TInt aId, TBool& aExists, TDes& aAttrVal );
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    /**
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    * Fetches the running status for application and folder
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    */
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    void GetAppRunningL( TInt aId, TBool& aExists, TDes& aAttrVal );
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    /**
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    * Appends extended attributes to attributes list
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    */
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    void AppendExtendedAttrributesL(
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    		const TDesC& aType,  
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    		RArray<TPtrC>& aList );
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private:    // Data
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    CMenuSrv& iMenuSrv; ///< Menu Server.
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    RBuf iContentName; ///< Content name. Own.
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    RPointerArray<CMenuSrvSession> iSessions; ///< Sessions using this engine.
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    CMenuEng* iEng; ///< Engine. Own.
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    CTimeout* iTimedClose; ///< Closing timer. Closes this object.
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    CMenuSrvAppScanner* iAppScanner; ///< App scanner. Own.
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    CMenuSrvFolderCrNotifier* iFolderNotifier; ///< Folder scanner. Own.
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    CMenuSrvEngUtils* iCMenuSrvEngUtils;///CMenuSrvEngUtils. Own.
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    CMcsSatMonitor* iMcsSatMonitor;
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    CMcsDrmHandler* iDrmHander;
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    CMcsRunningAppsHandler* iRunningAppsHandler;//own
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    CMcsCacheHandler* iCacheHandler;
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    CMcsChildrenHandler* iChildrenHandler;
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    CMcsSuiteHandler* iSuiteHandler;
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    CMcsGetlistHandler* iGetlistHandler;
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    };
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#ifdef __TEST_DISABLE_APPSCAN
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#pragma message("Undefine __TEST_DISABLE_APPSCAN !")
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#endif
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#endif // __MENUSRVENG_H__
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// End of File