ncdengine/inc/ncdnodeuricontent.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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/*
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* Copyright (c) 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 "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:   Contains MNcdNodeUriContent interface
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*
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*/
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#ifndef M_NCD_NODE_URI_CONTENT_H
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#define M_NCD_NODE_URI_CONTENT_H
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#include "catalogsbase.h"
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#include "ncdinterfaceids.h"
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/**
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 *  This interface provides functions to handle uri content.
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 *  There can be only one URI content in a node. 
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 *  URI item may have to be purchased before it can
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 *  be used. So, purchase interface may have to be used before
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 *  this content is available. 
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 *
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 *  @note URI items are not installed before usage. 
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 *  They will be launched directly from the given URI 
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 *  by using some application that Symbian OS sees fit
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 *  when the URI is opened. 
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 *
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 *  @see MNcdNodePurchase
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 *
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 *  
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 */
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class MNcdNodeUriContent : public virtual MCatalogsBase
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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 = ENcdNodeUriContentUid };
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    /** 
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     * This function gives the URI where the actual 
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     * content is located. So, the actual content has not 
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     * been given directly here. Instead the content may 
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     * be used by some other application which is
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     * started by the Symbian OS when the uri is opened.
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     *
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     * @return The URI that informs where the actual
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     *  content is located. If the protocol has not defined any value, 
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     *  then an empty string is returned.
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     */
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    virtual const TDesC& ContentUri() const = 0;
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    /** 
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     * Validity time in minutes for how long the target of the URI
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     * received by calling ContentUri() is accessible. Notice that
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     * the delta is not validity from the current time.
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     *
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     * @return The validity time in minutes for how long the target
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     *  of the URI is accessible. If the protocol has not defined
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     *  any value, then -1 is returned. Validity is counted from
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     *  the time that the validity is sent in the protocol to
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     *  the client.
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     */
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    virtual TInt ContentValidityDelta() 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 ~MNcdNodeUriContent() {}
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    };
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#endif // M_NCD_NODE_URI_CONTENT_H