ncdengine/inc/ncdpurchaseoption.h
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     1 /*
       
     2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:   ?Description
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #ifndef M_NCD_PURCHASE_OPTION_H
       
    20 #define M_NCD_PURCHASE_OPTION_H
       
    21 
       
    22 #include <e32cmn.h>
       
    23 
       
    24 #include "catalogsbase.h"
       
    25 #include "ncdinterfaceids.h"
       
    26 
       
    27 class MNcdNode;
       
    28 class MNcdSubscription;
       
    29 
       
    30 /**
       
    31  *  Describes one purchase option. 
       
    32  *
       
    33  *  Each purchasable node may have one or more of these.
       
    34  *  A purchase option can be for example "1$ Trial version", or "10$ Full version".
       
    35  *
       
    36  *  
       
    37  */
       
    38 class MNcdPurchaseOption : public virtual MCatalogsBase
       
    39     {
       
    40     
       
    41 public:
       
    42 
       
    43     /**
       
    44      * Unique identifier for the interface, required for all MCatalogsBase interfaces.
       
    45      *
       
    46      * 
       
    47      */
       
    48     enum { KInterfaceUid = ENcdPurchaseOptionUid };
       
    49 
       
    50     /**
       
    51      * Type of the purchase option.
       
    52      */
       
    53     enum TType
       
    54         {
       
    55         
       
    56         /** Purchase option to make a normal purchase. */
       
    57         EPurchase,
       
    58 
       
    59         /** Purchase option to purchase a subscription. */
       
    60         ESubscription,
       
    61 
       
    62         /** Purchase option to do a purchase using an existing subscription. */
       
    63         ESubscriptionPurchase,
       
    64         
       
    65         /** Purchase option to do an upgrade to an existing subscription. */
       
    66         ESubscriptionUpgrade
       
    67         
       
    68         };
       
    69 
       
    70     /**
       
    71      * Name getter.
       
    72      *
       
    73      * 
       
    74      * @return Name of the purchase option.
       
    75      */ 
       
    76     virtual const TDesC& Name() const = 0;
       
    77 
       
    78 
       
    79     /**
       
    80      * Price getter.
       
    81      *
       
    82      * 
       
    83      * @return String indicating the price of the purchase option.
       
    84      */
       
    85     virtual const TDesC& Price() const = 0;
       
    86 
       
    87 
       
    88     /**
       
    89      * Checks whether this purchase option is free.
       
    90      *
       
    91      * 
       
    92      * @return ETrue if this purchase option is free.
       
    93      */
       
    94     virtual TBool IsFree() const = 0;
       
    95 
       
    96 
       
    97     /**
       
    98      * Get type of the purchase option.
       
    99      *
       
   100      * 
       
   101      * @return Subscription type.
       
   102      */
       
   103     virtual TType PurchaseOptionType() const = 0;
       
   104 
       
   105     /**
       
   106      * Checks whether this purchase option is obsolete or not.
       
   107      * Purchase option becomes obsolete if it is removed while
       
   108      * user still has reference to it. Removal can be done for
       
   109      * example because the purchase option was removed from the
       
   110      * server.
       
   111      * Obsolete purchase option should not be used and valid purchase
       
   112      * option instances should be retrieved by using PurchaseOptionsL
       
   113      * method from MNcdNodePurchase interface.
       
   114      *
       
   115      * 
       
   116      * @return ETrue if this purchase option is obsolete.
       
   117      */
       
   118     virtual TBool IsObsolete() const = 0;
       
   119 
       
   120     /**
       
   121      * Checks whether this purchase option can be used.
       
   122      * The purchase option cannot be used if the type of
       
   123      * this purchase option is ESubscriptionPurchase or
       
   124      * ESubscriptionUpgrade and the parentsubscription is
       
   125      * not yet bought.
       
   126      *
       
   127      * 
       
   128      * @return ETrue if this purchase option can be used.
       
   129      * @exception Leave with KNcdErrorObsolete if this purchase option
       
   130      *            is obsolete. Otherwise leave with System wide error code.
       
   131      */
       
   132     virtual TBool IsUsableL() const = 0;
       
   133  
       
   134     /**
       
   135      * If this purchase option is of type ESubscriptionPurchase,
       
   136      * this function returns the subscription that the purchase option
       
   137      * uses if the subscription exists in subscription manager.
       
   138      *
       
   139      * @note Valid only when purchase option is a valid
       
   140      *       ESubscriptionPurchase and this purchase option is 
       
   141      *       not obsolete.
       
   142      *
       
   143      * @return Pointer to the subscription that this purchase option
       
   144      *         uses. The subscription can be expired or not, but if
       
   145      *         the subscription does not exist in the subscription
       
   146      *         manager, NULL is returned.
       
   147      *         Counted, Release() must be called after use.
       
   148      *
       
   149      * @exception Leave with KNcdErrorObsolete if this purchase option
       
   150      *            is obsolete. If this purchase option is not valid
       
   151      *            ESubscriptionPurchase then leave with
       
   152      *            KNcdErrorPurchaseOptionNotValidSubscriptionPurchase.
       
   153      *            Otherwise leave with System wide error code.
       
   154      */
       
   155     virtual MNcdSubscription* ParentSubscriptionL() const = 0;
       
   156 
       
   157     /**
       
   158      * Returns the node that has the purchase option to buy
       
   159      * the subscription needed to use this purchase option.
       
   160      *
       
   161      * @note Valid only when purchase option is a valid
       
   162      *       ESubscriptionPurchase and this purchase option is 
       
   163      *       not obsolete.
       
   164      *
       
   165      * @return Pointer to the node that has the purchase option to buy
       
   166      *         the subscription needed to use this purchase option.
       
   167      *         Note that the node may be in an uninitialized state,
       
   168      *         or in an initialized state, depending on whether the
       
   169      *         node has previously been known to the engine. Counted,
       
   170      *         Release() must be called after use.
       
   171      *
       
   172      * @exception Leave with KNcdErrorObsolete if this purchase option
       
   173      *            is obsolete. If this purchase option is not valid
       
   174      *            ESubscriptionPurchase then leave with
       
   175      *            KNcdErrorPurchaseOptionNotValidSubscriptionPurchase.
       
   176      *            Otherwise leave with System wide error code.
       
   177      */
       
   178     virtual MNcdNode* ParentSubscriptionNodeL() const = 0;
       
   179 
       
   180     /**
       
   181      * Returns an id that identifies the purchaseoption that can be
       
   182      * used to buy the subscription needed to use this purchase option.
       
   183      * Node that has the purchase option identified by the id returned
       
   184      * from this function can be queried by using method
       
   185      * ParentSubscriptionNodeL().
       
   186      *
       
   187      * @note Valid only when purchase option is a valid
       
   188      *       ESubscriptionPurchase.
       
   189      *
       
   190      * @return Id that identifies the purchaseoption that can be
       
   191      *         used to buy the subscription needed to use this 
       
   192      *         purchase option. Node where from this purchase option is
       
   193      *         found can be queried by using method
       
   194      *         ParentSubscriptionNodeL().
       
   195      *
       
   196      * @exception If this purchase option is not valid
       
   197      *            ESubscriptionPurchase then leave with
       
   198      *            KNcdErrorPurchaseOptionNotValidSubscriptionPurchase.
       
   199      *            Otherwise leave with System wide error code.
       
   200      */
       
   201     virtual const TDesC& ParentSubscriptionPurchaseOptionIdL() const = 0;
       
   202 
       
   203 
       
   204 protected:
       
   205 
       
   206     /**
       
   207     * Destructor.
       
   208     *
       
   209     * @see MCatalogsBase::~MCatalogsBase
       
   210     */
       
   211     virtual ~MNcdPurchaseOption() {}
       
   212 
       
   213     };
       
   214 	
       
   215 	
       
   216 #endif //  M_NCD_PURCHASE_OPTION_H