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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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* Version : 2 << Don't touch! Updated by Synergy at check-out.
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*
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*/
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#ifndef MMSUBCELLSSETUPCODE_H
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#define MMSUBCELLSSETUPCODE_H
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#include <e32def.h>
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const TInt KNumberOfBitsToStoreSubcellType = 3;
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const TInt KNumberOfBitsToStoreTemplateId = 8;
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const TInt KNumberOfBitsToStoreIsCurrentInfo = 1;
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/**
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* The purpose of this class is to provide a very fast way
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* of determining whether two particular ways of setting up
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* subcells are compatible (compatible == the same).
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*
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* It is important that the methods of this class are used
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* in a fixed order:
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* 1. (Optional) Clear() - only needed if this object was
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* used before.
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* 2. AddSubcellInfo() - for every subcell being set up
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* and in the same order.
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* 3. AddTemplateInfo
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* 4. AddIsCurrentInfo
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* It is currently possible to store information about up to 21
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* subcells (type of iCode is TUint64 and single subcell info
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* takes 3 bits). It can be easily proven that CMmListBoxItemDrawer
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* will never try to store more than
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* (2 * MmTemplateContants::KSubCellsCount) subcell infos
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* (2 * 6 = 12; 12 <= 21, so everything is fine).
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* Default assignment operator and copy constructor are ok
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* for this class.
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*/
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NONSHARABLE_CLASS( TMmSubcellsSetupCode )
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{
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public:
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/**
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* Values of this enum must be low enough to be stored in
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* just KNumberOfBitsToStoreSubcellType bits (currently the
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* maximum value allowed is 7).
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*/
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enum TSubcellType
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{
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ENoSubcell = 0,
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EGraphicsSubcell = 1,
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ETextSubcell = 2,
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EBackdropSubcell = 3,
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ESkippedSubcell = 4
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};
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public:
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/**
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* Standard C++ constructor.
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*/
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inline TMmSubcellsSetupCode();
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/**
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* Adds the information about what type of subcell was just
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* set up.
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* @param aSubcellType Subcell type (any value defined in the
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* TSubcellType enum).
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*/
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inline void AddSubcellInfo( TSubcellType aSubcellType );
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/**
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* Adds information about the template used.
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*
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* @param aTemplateIdentifier Template idetifier obtained from
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* CMmItemsDataCache::GetTemplateIdentifierL().
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*/
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inline void AddTemplateInfo( TInt aTemplateIdentifier );
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/**
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* Adds information whether subcells setup was made for a
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* highlighted item.
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*/
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inline void AddIsCurrentInfo( TBool aIsCurrent );
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/**
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* Clears all the information stored in this object so that
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* it can be-reused.
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*/
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inline void Clear();
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/**
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* Comparison operator ==.
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* @param aOther object to compare with this object.
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* @return ETrue if objects equal.
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*/
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inline TBool operator==( const TMmSubcellsSetupCode aOther ) const;
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/**
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* Comparison operator !=.
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* @param aOther object to compare with this object.
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* @return ETrue if objects differ.
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*/
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inline TBool operator!=( const TMmSubcellsSetupCode aOther ) const;
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protected: // data
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/**
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* The subcells setup code.
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*/
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TUint64 iCode;
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};
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#include "mmsubcellssetupcode.inl"
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#endif // MMSUBCELLSSETUPCODE_H
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