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 VCXHGVODCONTENTLISTMODELHANDLER_H

    21 #define VCXHGVODCONTENTLISTMODELHANDLER_H

    22 

    23 #include <ganes/HgScrollBufferObserverIface.h>

    24 

    25 #include "vcxhgvodthumbnailobserver.h"

    26 #include "vcxhgvodmainviewcontainer.h"

    27 #include "vcxnscontentproviderif.h"

    28 #include "vcxnscontentproviderobserver.h"

    29 

    30 class CHgScroller;

    31 class CVcxHgVodMainView;

    32 class CVcxNsUiEngine;

    33 class CVcxNsContent;

    34 class CVcxHgVodContentListImpl;

    35 class CVcxHgVodThumbnailManager;

    36 class TVcxHgVodVideoDetailsDialog;

    37 

    38 // CLASS DECLARATION

    39 /**

    40  *

    41  *  @code

    42  *   

    43  *  @endcode

    44  *

    45  *  @lib vcxhgvodui.lib

    46  *  @since S60 v5.0

    47  */

    48 class CVcxHgVodContentListModelHandler : public CBase,

    49                                          public MVcxNsContentProviderObserver,

    50                                          public MVcxHgVodThumbnailObserver,

    51                                          public MHgScrollBufferObserver

    52     {

    53 

    54 public:

    55 

    56     /**

    57      * Two-phased constructor.

    58      */

    59     static CVcxHgVodContentListModelHandler* NewL( 

    60             CVcxNsUiEngine& aDataProviderIf,

    61             CVcxHgVodMainView& aView, 

    62             CHgScroller& aScroller,

    63             CVcxHgVodContentListImpl& aContentListImpl );

    64     

    65     /**

    66      * Two-phased constructor.

    67      */

    68     static CVcxHgVodContentListModelHandler* NewLC( 

    69             CVcxNsUiEngine& aDataProviderIf,

    70             CVcxHgVodMainView& aView, 

    71             CHgScroller& aScroller,

    72             CVcxHgVodContentListImpl& aContentListImpl );

    73 

    74     /**

    75     * Destructor.

    76     */

    77     virtual ~CVcxHgVodContentListModelHandler();

    78 

    79     /**

    80     * Activate model

    81     * 

    82     */

    83     void DoActivateModelL( );

    84     

    85     /**

    86     * Deactivate model

    87     * 

    88     */

    89     void DoDeActivateModel( );

    90     

    91     /**

    92     * Get services and set to widget model.

    93     * 

    94     */

    95     void SetListContentL();

    96     

    97     /**

    98     * Get category provider interface pointer

    99     * 

   100     */

   101     MVcxNsContentProviderIf* ContentProvider();

   102     

   103     /**

   104      * Get selected video's details

   105      */

   106     void ShowVideoDetailsL( TInt aSelected );

   107     

   108     /**

   109      * Check if model is empty.

   110      */

   111     TBool IsEmptyModel();

   112 

   113 public:    

   114 

   115     /**

   116      * From MVcxNsContentProviderObserver

   117      * Notify content's data has been updated.

   118      */

   119     void ContentUpdated( TInt aIndex );

   120 

   121     /**

   122      * From MVcxNsContentProviderObserver 

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

   124      */

   125     void RefreshView();

   126     

   127     /**

   128      * From MVcxNsCategoryProviderObserver 

   129      * Application state needs to be updated.

   130      */

   131     void HandleAppStateChangedL();

   132        

   133     /**

   134      * MVcxNsContentProviderObserver

   135      * Epg update is ongoing, show the notification.

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

   137      * 

   138      * @param aDownloaded count of downloaded thumbnails.

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

   140      */

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

   142     

   143     /**

   144      * From MVcxNsContentProviderObserver

   145      * Handle error 

   146      * 

   147      * @param aError Error to handle in UI

   148      */

   149     void HandleUpdateErrorL( TInt aError );

   150     

   151     /**

   152      * From MVcxNsContentProviderObserver

   153      * Handle download error 

   154      * 

   155      * @param aError Error to handle in UI

   156      * @param aContent Details of the video which content has failed.

   157      */

   158     void HandleDownloadErrorL( TIptvDlError aError, CVcxNsContent& aContent );

   159 

   160     /**

   161      * From MVcxHgVodThumbnailObserver

   162      * Notifies about completed thumbnail loading.

   163      *

   164      * @param aIcon Pointer to the created icon, ownership is transferred.

   165      * @param aClientId ContentId of the thumbnail.

   166      */  

   167     void MvtoThumbnailReady( CGulIcon* aIcon, TInt64 aClientId );

   168     

   169 private:    

   170     

   171     /**

   172      * Default constructor

   173      *

   174      */

   175     CVcxHgVodContentListModelHandler( 

   176                 CVcxNsUiEngine& aDataProviderIf,

   177                 CVcxHgVodMainView& aView, 

   178                 CHgScroller& aScroller,

   179                 CVcxHgVodContentListImpl& aContentListImpl );

   180 

   181     /**

   182      * Constructor

   183      */

   184     void ConstructL( );

   185 

   186 

   187     /**

   188      * Generate second line text according to content current status.

   189      * @param aContent Content details

   190      * @return Content info string

   191      */

   192     HBufC* GenerateContextInfoTextLC( CVcxNsContent& aContent );

   193 

   194     /**

   195      * Update msk commands.

   196      */

   197     void HandleCommandUpdatesL();

   198     

   199     /**

   200      * Update data in the model

   201      *  

   202      * @param aStartIndex Index at which the item request has been initiated

   203      * @param aRange Number of items to update

   204      */

   205     void ProvideDataL( int aStartIndex, int aRange );

   206     

   207     /**

   208      * Update view details:

   209      * Title pane, empty list text.

   210      */

   211     void UpdateViewDetailsL();

   212     

   213     /**

   214      * Refreshes view.

   215      */

   216     void RefreshViewL();

   217     

   218     /**

   219      * Updates data of item in list.

   220 	 * @param aIndex Item's index

   221      */

   222     void UpdateListItemL( TInt aIndex );

   223     

   224     /**

   225      * Handles completed thumbnail loading. Makes sure that the 

   226      * aIcon is pushed to CleanupStack before any leaving code is

   227      * executed.

   228      */

   229     void DoThumbnailReadyL( CGulIcon* aIcon, TInt64 aClientId );

   230 

   231     /**

   232      * From MHgScrollBufferObserver

   233      * 

   234      * Buffer position changed. The items between the aBufferStart 

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

   236      * 

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

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

   239      * @param aDirection The direction of request.

   240      */

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

   242         

   243     /**

   244      * From MHgScrollBufferObserver

   245      * 

   246      * Buffer position changed. The items between the aBufferStart 

   247      * and aBufferEnd should be released.

   248      * 

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

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

   251      */

   252     void Release( TInt aBufferStart, TInt aBufferEnd );

   253         

   254     

   255 private: // data

   256     

   257     /**

   258      * Video details dialog.

   259      * Own.

   260      */

   261     TVcxHgVodVideoDetailsDialog* iVideoDetails;

   262     

   263     /**

   264      * Ref to Ui Engine interface.

   265      * 

   266      */

   267     CVcxNsUiEngine& iDataProviderIf;

   268 

   269     /**

   270      * Reference to vod main view

   271      *

   272      */

   273     CVcxHgVodMainView& iView;

   274     

   275     /**

   276      * Reference to UI component responsible for displaying the list.

   277      */

   278     CHgScroller& iScroller;

   279     

   280     /**

   281      * Pointer to content provider if in UI engine

   282      * 

   283      */

   284     MVcxNsContentProviderIf* iContentProvider;

   285     

   286     /**

   287      * Pointer to array that holds contents in UI engine

   288      * Not own.

   289      */

   290     RPointerArray<CVcxNsContent>* iContents;

   291     

   292     /**

   293      * Ref to list implementation

   294      * 

   295      */

   296     CVcxHgVodContentListImpl& iListImpl;

   297     

   298     /**

   299      * Used to load thumbnails asynchronously.

   300      */

   301     CVcxHgVodThumbnailManager* iTnManager;

   302     

   303     };

   304 

   305 #endif // VCXHGVODCONTENTLISTMODELHANDLER_H