ncdengine/inc/ncdqueryselectionitem.h
author Pat Downey <patd@symbian.org>
Tue, 18 May 2010 13:42:18 +0100
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Merge docml changeset, iby creation mods and sqlite_secure (bug 2548).
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/*
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* Copyright (c) 2006-2008 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 M_NCD_QUERY_SELECTION_ITEM_H
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#define M_NCD_QUERY_SELECTION_ITEM_H
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#include <e32cmn.h>
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#include "ncdqueryitem.h"
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#include "ncdinterfaceids.h"
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class MDesCArray;
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class MDesC8Array;
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/**
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 *  Describes a selection query item.
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 */
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class MNcdQuerySelectionItem : public virtual MNcdQueryItem
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    {
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public:
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    /**
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     * Unique identifier for the interface, required for all MCatalogsBase interfaces.
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     *
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     * 
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     */
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    enum { KInterfaceUid = ENcdQuerySelectionItemUid };
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    /**
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     * Getter for selection texts.
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     *
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     * 
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     * @return Array of selection item names, one for each selection.
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     */
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    virtual const MDesCArray& SelectionTexts() const = 0;
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    /**
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     * Getter for additional selection data.
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     * 
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     * @note Actual contents depend on context. Query semantics can be used to determine
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     *  the content type (if any).
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     *
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     * 
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     * @return Array of descriptors containing the additional data for each selection.
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     */
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    virtual const MDesC8Array& SelectionData() const = 0;
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    /**
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     * Selects one of the choices.
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     *
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     * 
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     * @param aIndex Index of the selection (index of the selection text in the array
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     *  returned by SelectionTexts()
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     * @exception KErrArgument Specified index is out of bounds.
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     */
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    virtual void SetSelectionL( TInt aIndex ) = 0;
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    /**
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     * Selection getter
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     *
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     * @return Index that was set with SetSelectionL
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     */
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    virtual TInt Selection() const = 0;
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protected:
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    /**
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    * Destructor.
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    *
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    * @see MCatalogsBase::~MCatalogsBase
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    */
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    virtual ~MNcdQuerySelectionItem() {}
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    };
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#endif //  M_NCDQUERYSELECTIONITEM_H