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:    bindings required to populate the visual item

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef _GLXBINDINGSET_H_

    22 #define _GLXBINDINGSET_H_

    23 

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

    25 #include "glxbinding.h"               // holds the bindings required to populate the visual item

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

    27 

    28 class TGlxMedia;                      // media item in the item pool

    29 

    30 namespace Alf

    31     {

    32     class MulVisualItem;              // Client need to use this class to add data in data model

    33     }

    34 

    35 class CGlxAttributeRequirements;      // class will set the required attribute to the medialist

    36 

    37 /**

    38  * CGlxBindingSet

    39  * The binding set is created by the binding set factory.

    40  * This basically holds the bindings required to populate the visual item.

    41  */

    42 NONSHARABLE_CLASS( CGlxBindingSet ) : public CGlxBinding, public MGlxBindingObserver

    43     {

    44 public:

    45 	/**

    46 	* Two phase construction

    47 	* @param aObserver Observes binding

    48 	*/

    49     static CGlxBindingSet* NewLC( MGlxBindingObserver& aObserver );

    50 	

    51 	/**

    52 	*Destructor

    53 	*/

    54     ~CGlxBindingSet();

    55 	

    56  	/**

    57 	* Adds the bindings to the binding set

    58 	* @param aBinding The binding to be added to the binding set : owned

    59 	*/

    60     void AddBindingL( CGlxBinding* aBinding );

    61     

    62 	// From CGlxBinding

    63     void PopulateT( Alf::MulVisualItem& aItem, const TGlxMedia& aMedia,

    64 		TBool aIsFocused ) const;

    65     TBool HasRelevantAttributes( const RArray< TMPXAttribute >& aAttributes ) const;

    66     

    67     TResponse HandleFocusChanged( TBool aIsGained );

    68     

    69     void HandleItemChangedL(const CMPXCollectionPath& aPath );

    70     /**

    71 	* Adds the fetch context to medialist

    72 	* @param aAttributeRequirement The object that sets the attribute to medialist

    73 	*/

    74     void AddRequirementsL( CGlxAttributeRequirements& aAttributeRequirement,TSize aSize);

    75     

    76 private: 

    77 	/**

    78 	* Constructor

    79 	* @param aObserver Observes binding

    80 	*/

    81     CGlxBindingSet( MGlxBindingObserver& aObserver );

    82     

    83 	// From MGlxBindingObserver

    84     void HandleBindingChanged( const CGlxBinding& aBinding );

    85     

    86 private:

    87 	// Binding Observer

    88     MGlxBindingObserver& iObserver;

    89 	

    90 	// Array of Binding-Bindingset

    91     RPointerArray< CGlxBinding > iBindings;

    92     

    93     };

    94 

    95 #endif // _GLXBINDINGSET_H_