1 /*

     2 * Copyright (c) 2008 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 the License "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:    HG VOD*

    15 */

    16 

    17 

    18 

    19 

    20 #ifndef VCXHGVODCATEGORYLISTMODELHANDLER_H

    21 #define VCXHGVODCATEGORYLISTMODELHANDLER_H

    22 

    23 #include <ganes/HgScrollBufferObserverIface.h>

    24 

    25 #include "vcxhgvodmainviewcontainer.h"

    26 #include "vcxnscategoryproviderif.h"

    27 #include "vcxnscategoryproviderobserver.h"

    28 

    29 class CHgScroller;

    30 class CHgItem;

    31 class CVcxHgVodMainView;

    32 class CVcxNsUiEngine;

    33 class CVcxNsCategory;

    34 class CVcxHgVodCategoryListImpl;

    35 

    36 // CLASS DECLARATION

    37 /**

    38  *  

    39  *  

    40  *

    41  *  @code

    42  *   

    43  *  @endcode

    44  *

    45  *  @lib vcxhgvodui.lib

    46  *  @since S60 v5.0

    47  */

    48 class CVcxHgVodCategoryListModelHandler : public CBase,

    49                                           public MVcxNsCategoryProviderObserver,

    50                                           public MHgScrollBufferObserver

    51     {

    52 

    53 public:

    54 

    55     /**

    56      * Two-phased constructor.

    57      */

    58     static CVcxHgVodCategoryListModelHandler* NewL( 

    59             CVcxNsUiEngine& aDataProviderIf, 

    60             CVcxHgVodMainView& aView, 

    61             CHgScroller& aScroller,

    62             CVcxHgVodCategoryListImpl& aCategoryListImpl );

    63     

    64     /**

    65      * Two-phased constructor.

    66      */

    67     static CVcxHgVodCategoryListModelHandler* NewLC( 

    68             CVcxNsUiEngine& aDataProviderIf, 

    69             CVcxHgVodMainView& aView, 

    70             CHgScroller& aScroller,

    71             CVcxHgVodCategoryListImpl& aCategoryListImpl );

    72 

    73     /**

    74     * Destructor.

    75     */

    76     virtual ~CVcxHgVodCategoryListModelHandler();

    77 

    78     /**

    79     * Activate model

    80     * 

    81     */

    82     void DoActivateModelL( );

    83     

    84     /**

    85     * Deactivate model

    86     * 

    87     */

    88     void DoDeActivateModel( );

    89     

    90     /**

    91     * Get services and set to widget model.

    92     * 

    93     */

    94     void SetListContentL();

    95     

    96     /**

    97     * Get category provider interface pointer

    98     * 

    99     */

   100     MVcxNsCategoryProviderIf* CategoryProvider();

   101     

   102 public:    

   103 

   104     /**

   105      * From MVcxNsCategoryProviderObserver

   106      * Notify category's data has been updated.

   107      */

   108     void CategoryUpdated( TInt aIndex );

   109 

   110     /**

   111      * From MVcxNsCategoryProviderObserver 

   112      * Application state or full view data needs to be updated.

   113      */

   114     void RefreshView();

   115 

   116     /**

   117      * From MVcxNsCategoryProviderObserver 

   118      * Application state needs to be updated.

   119      */

   120     void HandleAppStateChangedL();

   121 

   122     /**

   123      * From MVcxNsCategoryProviderObserver

   124      * Epg update is ongoing, show the notification.

   125      * When downloading and parsing the xml, both parameters are 0.

   126      * 

   127      * @param aDownloaded count of downloaded thumbnails.

   128      * @param aTotal Total count of thumbnails to be downloaded.

   129      */

   130     void ShowUpdatingNoteL( TBool aShow, TInt aDownloadedTbns, TInt aTotalTbns );

   131 

   132     /**

   133      * From MVcxNsCategoryProviderObserver

   134      * Handle error 

   135      * 

   136      * @param aError Error to handle in UI

   137      */

   138     void HandleUpdateErrorL( TInt aError );

   139     

   140 private:    

   141     

   142     /**

   143      * Default constructor

   144      *

   145      */

   146     CVcxHgVodCategoryListModelHandler( 

   147                 CVcxNsUiEngine& aDataProviderIf, 

   148                 CVcxHgVodMainView& aView, 

   149                 CHgScroller& aScroller,

   150                 CVcxHgVodCategoryListImpl& aCategoryListImpl );

   151 

   152     /**

   153      * Constructor

   154      *

   155      */

   156     void ConstructL( );

   157 

   158     /**

   159      * Updates data of item in list.

   160 	 * @param aIndex Item's index

   161      */

   162    void UpdateListItemL( TInt aIndex );

   163    

   164    /**

   165     * Refreshes view.

   166     */

   167    void RefreshViewL();

   168    

   169    /**

   170     * From MHgScrollBufferObserver

   171     * 

   172     * Buffer position changed. The items between the aBufferStart 

   173     * and aBufferEnd should be loaded as soon as possible.

   174     * 

   175     * @param aBufferStart The index of the first item in buffer.

   176     * @param aBufferEnd The index of the last item in buffer.

   177     * @param aDirection The direction of request.

   178     */

   179    void Request( TInt aBufferStart, TInt aBufferEnd, THgScrollDirection aDirection );

   180        

   181    /**

   182     * From MHgScrollBufferObserver

   183     * 

   184     * Buffer position changed. The items between the aBufferStart 

   185     * and aBufferEnd should be released.

   186     * 

   187     * @param aBufferStart The index of the first item in buffer.

   188     * @param aBufferEnd The index of the last item in buffer.

   189     */

   190    void Release( TInt aBufferStart, TInt aBufferEnd );

   191    

   192 private: // data

   193     

   194     /**

   195      * Ref to Ui Engine interface.

   196      * 

   197      */

   198     CVcxNsUiEngine& iDataProviderIf;

   199     

   200     /**

   201      * Reference to vod main view

   202      *

   203      */

   204     CVcxHgVodMainView& iView;

   205     

   206     /**

   207      * Pointer to category provide if in UI engine

   208      * 

   209      */

   210     MVcxNsCategoryProviderIf* iCategoryProvider;

   211     

   212     /**

   213      * Pointer to array that holds categories in UI engine

   214      * Not own.

   215      */

   216     RPointerArray<CVcxNsCategory>* iCategories;

   217     

   218     /**

   219      * Ref to scroller

   220      * 

   221      */

   222     CHgScroller& iScroller;

   223     

   224     /**

   225      * Ref to list implementation

   226      * 

   227      */

   228     CVcxHgVodCategoryListImpl& iListImpl;

   229     };

   230 

   231 #endif // VCXHGVODCATEGORYLISTMODELHANDLER_H