/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#ifndef SPBCONTENTPROVIDER_H_

#define SPBCONTENTPROVIDER_H_

//  INCLUDES

#include <e32base.h>

class CSpbContentProviderPrivate;

class MVPbkContactLink;

class CVPbkContactManager;

class CPbk2StoreManager;

class TPbk2IconId;

class CGulIcon;

/**

 * Interface to observe content changes

 */

class MSpbContentProviderObserver

    {

public:

    /**

     * Event types

     */

    enum TSpbContentEvent

        {

        EContentChanged = 0x0,

        EContentNotAvailable

        };

    /**

     * Provider send this event when there is updated content 

     * information available for the contact.

     * 

     * @param aLink Contact which the event is about

     * @param aEvent Type of the event

     */

    virtual void ContentUpdated(

        MVPbkContactLink& aLink, 

        MSpbContentProviderObserver::TSpbContentEvent aEvent ) = 0;

protected:

    MSpbContentProviderObserver(){};

    virtual ~MSpbContentProviderObserver() {};

    };

/**

 * CSpbContentProvider provides methods to access 

 * to extra content of the contact for Social phonebook features.

 * 

 * @since TB9.2

 * @lib pbk2spbcontentprovider.lib

 */

NONSHARABLE_CLASS( CSpbContentProvider ) : public CBase

    {

public: // Data types

    /// Content flags (binary)

    enum TSpbContentFlags

        {

        ENone           = 0x0,

        /**

         * If Feature Manager FF_CONTACTS_SOCIAL flag is not defined  

         * status message is not fetched

         */ 

        EStatusMessage  = 0x1,

        /**

         * If Feature Manager FF_CONTACTS_SOCIAL flag is not defined  

         * service icon is not fetched

         */ 

        EServiceIcon    = 0x2,

        /**

         * If status message is not available or Feature Manager 

         * FF_CONTACTS_SOCIAL is not defined phone number is returned

         */ 

        EPhoneNumber    = 0x4

        };

    /// Type of the retrieved content

    enum TSpbContentType

        {

        /// No content available

        ETypeNone       = 0x0,

        /// Content is contact's social status (text & icon)  

        ETypeSocialStatus,

        /// Content is contact's phone number (text)

        };

public: // Construction & destruction

    /**

     * Constructor

     * 

     * @param aContactManager Contact Manager instance

     * @param aFeatures Required content (see TSpbContentFlags)

     */

    IMPORT_C static CSpbContentProvider* NewL(

        CVPbkContactManager& aContactManager,

        CPbk2StoreManager& aStoreManager,

        TInt32 aFeatures );

    /// Destructor

    ~CSpbContentProvider();

public:

    /**

     * Add observer

     */

    IMPORT_C void AddObserverL(

        MSpbContentProviderObserver& aObserver );

    /**

     * Removes observer

     */

    IMPORT_C void RemoveObserver(

        MSpbContentProviderObserver& aObserver );

    /**

     * Provides Spb content information for the contact. 

     * If current extra content is not know by provider then provider 

     * starts fetch extra information and send observer event when content 

     * information is available.

     */

    IMPORT_C void GetContentL(

        MVPbkContactLink& aLink,

        HBufC*& aText,

        TPbk2IconId& aIconId, 

        TSpbContentType& aType );

    /**

     * Create service icon. Ownership transferred to caller

     * Note! Function returns a NULL pointer if Feature Manager Flag 

     * FF_CONTACTS_SOCIAL is not supported or CSpbContentProvider::EServiceIcon

     * flag is not defined

     * 

     * @param aIconId icon id for created icon

     * @return Created icon object 

     */

    IMPORT_C CGulIcon* CreateServiceIconLC( 

        const TPbk2IconId& aIconId );

private: // Constructors

    /// Constructor

    inline CSpbContentProvider();

    /// Constructor

    inline void ConstructL(

        CVPbkContactManager& aContactManager,

        CPbk2StoreManager& aStoreManager,

        TInt32 aFeatures);

private: // data

    // Own. Private implementation

    CSpbContentProviderPrivate* iImpl;

    };

#endif /*SPBCONTENTPROVIDER_H_*/