1 /*

     2 * Copyright (c) 2008-2009 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:    Implementation class for Media data provider.

    15 *                 providign the data to the clients

    16 *

    17 */

    18 

    19 

    20 

    21 

    22 #ifndef _GLXMEDIALISTMULMODELPROVIDERIMPL_H_

    23 #define _GLXMEDIALISTMULMODELPROVIDERIMPL_H_

    24 

    25 #include <e32base.h>                       // Container Base Class

    26 #include "glxmulmodelproviderbase.h"       // DataProvider Base

    27 #include "mglxbindingobserver.h"           // Notifies that binding has changed

    28  

    29 namespace Alf

    30 	{

    31 	class IMulWidget;                      // An interface for all Multimedia widgets

    32 	}

    33 

    34 // Forward declarations

    35 class TGlxMulBindingSetFactory;            // Create binding set 

    36 class CGlxAttributeRequirements;           // This class will set the required attribute to the medialist

    37 class CAlfEnv;                             // This is the UI Accelerator Toolkit environment object

    38 class MGlxMediaList;                       // Interface for reading lists of media items

    39 class CGlxBindingSet;                      // basically holds the bindings required to populate the visual item.

    40 class CGlxResolutionUtility;               // Singleton containing resolution utility methods

    41 class CGlxUiUtility;                       // lib glxalfutils.lib  ; Alf utils

    42 

    43 /**

    44 * CGlxMediaListMulModelProviderImpl

    45 * The actual implemntation for providign the data to the clients is done here

    46 */

    47 NONSHARABLE_CLASS( CGlxMediaListMulModelProviderImpl ) : public CGlxMulModelProviderBase,

    48 														public MGlxBindingObserver 

    49     {

    50     	

    51 public:

    52 	/**

    53 	* The medialist data provider uses this API to create the provider impl

    54 	* @param aEnv The Alf Environment

    55 	* @param aWidget The widget being used by client for which the model has to be set

    56 	* @param aMediaList The instance of medialist which provides data for the model

    57 	* @param aFactory The instance of the bindingset factory 

    58 	* @param aDefaultTemplate The template that is being used for the widget.

    59 	*/

    60     static CGlxMediaListMulModelProviderImpl* NewL( CAlfEnv& aEnv, 

    61 													Alf::IMulWidget& aWidget, 

    62 													MGlxMediaList& aMediaList,

    63 													const TGlxMulBindingSetFactory& aFactory, 

    64 													Alf::mulwidget::TLogicalTemplate aDefaultTemplate,

    65 													TInt aDataWindowSize );

    66             

    67     /**

    68 	* Destructor

    69 	*/                       

    70     ~CGlxMediaListMulModelProviderImpl();

    71     

    72 private:

    73 	/**

    74 	* Constructor

    75 	* @param aWidget The widget being used by client for which the model has to be set

    76 	* @param aMediaList The instance of medialist which provides data for the model

    77 	*/

    78     CGlxMediaListMulModelProviderImpl( Alf::IMulWidget& aWidget, MGlxMediaList& aMediaList );

    79         

    80 	/**

    81 	* ConstructL

    82 	* @param aEnv The Alf Environment

    83 	* @param aFactory The instance of the bindingset factory 

    84 	* @param aDefaultTemplate The template that is being used for the widget.

    85 	*/   

    86     void ConstructL( CAlfEnv& aEnv,

    87                      const TGlxMulBindingSetFactory& aFactory,

    88                      Alf::mulwidget::TLogicalTemplate aDefaultTemplate,

    89                      TInt aDataWindowSize );

    90     

    91 	/**

    92      * Helper function used be HandleError

    93      * @param aError the error code to handle.

    94      */

    95     void DoHandleErrorL( TInt aError );

    96 

    97 	// From MGlxBindingObserver

    98     void HandleBindingChanged( const CGlxBinding& aBinding );

    99     

   100     void HandleOrientationChanged();  

   101 	// From CGlxMulModelProviderBase

   102 	void HandleFocusChanged(TInt aNewFocusIndex, TInt aPreviousFocusIndex);    

   103 	// From MGlxMediaListObserver

   104     void HandleItemAddedL( TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList );

   105     void HandleItemRemovedL( TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList );

   106     void HandleAttributesAvailableL( TInt aItemIndex, 

   107         const RArray<TMPXAttribute>& aAttributes, MGlxMediaList* aList );   

   108 	void HandleFocusChangedL( NGlxListDefs::TFocusChangeType aType, 

   109         TInt aNewIndex, TInt aOldIndex, MGlxMediaList* aList );

   110     void HandleError( TInt aError );

   111     //Bug fix for PKAA-7NRBYZ

   112     void HandleItemModifiedL( const RArray<TInt>& aItemIndexes, MGlxMediaList* aList );

   113      

   114     // From IMulModelProvider

   115     void  ProvideData (int aIndex, int aCount, Alf::MulDataPath aPath);

   116 private:

   117 

   118     MGlxMediaList& iMediaList;

   119     CGlxBindingSet* iBindingSet; // own

   120     TBool iIsReleventAttribute;

   121     CGlxAttributeRequirements* iAttributeRequirements; // own

   122     CGlxResolutionUtility* iResolutionUtility;

   123     Alf::IMulWidget& iWidget;

   124     CGlxUiUtility* iUiUtility;

   125 

   126     };

   127     

   128 #endif // _GLXMEDIALISTMULMODELPROVIDERIMPL_H_

   129 

   130