ncdengine/inc/ncdpurchaseoption.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 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:   ?Description
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*
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*/
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#ifndef M_NCD_PURCHASE_OPTION_H
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#define M_NCD_PURCHASE_OPTION_H
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#include <e32cmn.h>
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#include "catalogsbase.h"
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#include "ncdinterfaceids.h"
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class MNcdNode;
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class MNcdSubscription;
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/**
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 *  Describes one purchase option. 
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 *
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 *  Each purchasable node may have one or more of these.
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 *  A purchase option can be for example "1$ Trial version", or "10$ Full version".
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 *
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 *  
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 */
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class MNcdPurchaseOption : 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 = ENcdPurchaseOptionUid };
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    /**
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     * Type of the purchase option.
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     */
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    enum TType
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        {
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        /** Purchase option to make a normal purchase. */
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        EPurchase,
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        /** Purchase option to purchase a subscription. */
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        ESubscription,
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        /** Purchase option to do a purchase using an existing subscription. */
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        ESubscriptionPurchase,
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        /** Purchase option to do an upgrade to an existing subscription. */
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        ESubscriptionUpgrade
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        };
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    /**
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     * Name getter.
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     *
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     * 
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     * @return Name of the purchase option.
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     */ 
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    virtual const TDesC& Name() const = 0;
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    /**
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     * Price getter.
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     *
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     * 
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     * @return String indicating the price of the purchase option.
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     */
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    virtual const TDesC& Price() const = 0;
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    /**
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     * Checks whether this purchase option is free.
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     *
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     * 
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     * @return ETrue if this purchase option is free.
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     */
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    virtual TBool IsFree() const = 0;
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    /**
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     * Get type of the purchase option.
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     *
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     * 
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     * @return Subscription type.
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     */
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    virtual TType PurchaseOptionType() const = 0;
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    /**
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     * Checks whether this purchase option is obsolete or not.
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     * Purchase option becomes obsolete if it is removed while
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     * user still has reference to it. Removal can be done for
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     * example because the purchase option was removed from the
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     * server.
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     * Obsolete purchase option should not be used and valid purchase
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     * option instances should be retrieved by using PurchaseOptionsL
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     * method from MNcdNodePurchase interface.
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     *
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     * 
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     * @return ETrue if this purchase option is obsolete.
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     */
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    virtual TBool IsObsolete() const = 0;
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   119
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    /**
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     * Checks whether this purchase option can be used.
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     * The purchase option cannot be used if the type of
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     * this purchase option is ESubscriptionPurchase or
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     * ESubscriptionUpgrade and the parentsubscription is
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     * not yet bought.
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     *
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     * 
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     * @return ETrue if this purchase option can be used.
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     * @exception Leave with KNcdErrorObsolete if this purchase option
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     *            is obsolete. Otherwise leave with System wide error code.
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     */
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    virtual TBool IsUsableL() const = 0;
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    /**
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     * If this purchase option is of type ESubscriptionPurchase,
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     * this function returns the subscription that the purchase option
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     * uses if the subscription exists in subscription manager.
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     *
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     * @note Valid only when purchase option is a valid
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     *       ESubscriptionPurchase and this purchase option is 
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     *       not obsolete.
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     *
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     * @return Pointer to the subscription that this purchase option
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     *         uses. The subscription can be expired or not, but if
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     *         the subscription does not exist in the subscription
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     *         manager, NULL is returned.
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     *         Counted, Release() must be called after use.
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     *
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     * @exception Leave with KNcdErrorObsolete if this purchase option
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     *            is obsolete. If this purchase option is not valid
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     *            ESubscriptionPurchase then leave with
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     *            KNcdErrorPurchaseOptionNotValidSubscriptionPurchase.
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     *            Otherwise leave with System wide error code.
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     */
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    virtual MNcdSubscription* ParentSubscriptionL() const = 0;
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    /**
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     * Returns the node that has the purchase option to buy
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     * the subscription needed to use this purchase option.
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     *
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     * @note Valid only when purchase option is a valid
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     *       ESubscriptionPurchase and this purchase option is 
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     *       not obsolete.
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     *
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     * @return Pointer to the node that has the purchase option to buy
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     *         the subscription needed to use this purchase option.
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     *         Note that the node may be in an uninitialized state,
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     *         or in an initialized state, depending on whether the
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     *         node has previously been known to the engine. Counted,
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     *         Release() must be called after use.
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     *
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     * @exception Leave with KNcdErrorObsolete if this purchase option
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     *            is obsolete. If this purchase option is not valid
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     *            ESubscriptionPurchase then leave with
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     *            KNcdErrorPurchaseOptionNotValidSubscriptionPurchase.
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     *            Otherwise leave with System wide error code.
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     */
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    virtual MNcdNode* ParentSubscriptionNodeL() const = 0;
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    /**
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     * Returns an id that identifies the purchaseoption that can be
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     * used to buy the subscription needed to use this purchase option.
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     * Node that has the purchase option identified by the id returned
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     * from this function can be queried by using method
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     * ParentSubscriptionNodeL().
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     *
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     * @note Valid only when purchase option is a valid
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     *       ESubscriptionPurchase.
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     *
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     * @return Id that identifies the purchaseoption that can be
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     *         used to buy the subscription needed to use this 
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     *         purchase option. Node where from this purchase option is
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   193
     *         found can be queried by using method
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   194
     *         ParentSubscriptionNodeL().
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   195
     *
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   196
     * @exception If this purchase option is not valid
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     *            ESubscriptionPurchase then leave with
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     *            KNcdErrorPurchaseOptionNotValidSubscriptionPurchase.
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     *            Otherwise leave with System wide error code.
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     */
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    virtual const TDesC& ParentSubscriptionPurchaseOptionIdL() const = 0;
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   202
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parents:
diff changeset
   203
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protected:
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   205
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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 ~MNcdPurchaseOption() {}
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    };
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   215
	
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#endif //  M_NCD_PURCHASE_OPTION_H