/*

* 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 HSCONTENTCOTROLLER_H

#define HSCONTENTCOTROLLER_H

// System includes

#include <e32base.h>

// Forward declarations

class CHsContentInfo;

class CHsContentInfoArray;

// Constants

/**

 * No widgets can be added to this page before removing some first.

 */

const TInt KHsErrorViewFull = -87001;

/**

 * Unable to add this widget because the maximum instance count

 * per page will exceed

 */

const TInt KHsErrorMaxInstanceCountExceeded = -87002; 

/**

 * A smaller widget might fit though.

 */

const TInt KHsErrorDoesNotFit = -87003;

/**

 *

 */

class MHsContentController

    {

public:

    /**

     * Returns the list of available Home screen widgets

     * @param aArray List of widgets

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt WidgetListL( CHsContentInfoArray& aArray ) = 0;

    /**

     * Returns the list of Home screen widgets included in an application 

     * configuration or a view

     * @param aInfo Content info defining the application configuration 

     *              or the view which widget list is requested

     * @param aArray List of widgets

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt WidgetListL( CHsContentInfo& aInfo, CHsContentInfoArray& aArray ) = 0;

    /**

     * Returns the list of available Home screen views

     * @param aArray List of views

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt ViewListL( CHsContentInfoArray& aArray ) = 0;

    /**

     * Returns the list of available Home screen views included in an

     * application configuration

     * @param aInfo Content info defining the application configuration

     * @param aArray List of views

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt ViewListL( CHsContentInfo& aInfo, CHsContentInfoArray& aArray ) = 0;

    /**

     * Returns the list of available Home screen application configurations

     * @param aArray List of application configurations

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt AppListL( CHsContentInfoArray& aArray ) = 0;

    /**

     * Adds a widget to the active Home screen view.

     * @param aInfo Widget request to be added

     * @return KErrNone on success, any of system wide error codes,

     *         KHsErrorViewFull, KHsErrorMaxInstanceCountExceeded or

     *         KHsErrorDoesNotFit

     */

    virtual TInt AddWidgetL( CHsContentInfo& aInfo ) = 0;

    /**

     * Removes a widget from the configuration.

     * @param aInfo Widget request to be removed

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt RemoveWidgetL( CHsContentInfo& aInfo ) = 0;

    /**

     * Adds a view to the active Home screen application configuration.

     * @param aInfo View request to be added

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt AddViewL( CHsContentInfo& aInfo ) = 0;

    /**

     * Removes a view from the configuration.

     * @param aInfo View request to be removed

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt RemoveViewL( CHsContentInfo& aInfo ) = 0;

    /**

     * Activates the Home screen view

     * @param aInfo View request to be activated

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt ActivateViewL( CHsContentInfo& aInfo ) = 0;

    /**

     * Activates the Home screen application configuration

     * @param aInfo Application configuration request to be activated

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt ActivateAppL( CHsContentInfo& aInfo ) = 0;

    /**

     * Returns the active Home screen view

     * @param aInfo Active view

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt ActiveViewL( CHsContentInfo& aInfo ) = 0;

    /**

     * Returns the active Home screen application configuration

     * @param aInfo Active application configuration

     * @return KErrNone on success, any of system wide error codes

     */

    virtual TInt ActiveAppL( CHsContentInfo& aInfo ) = 0;

    };

#endif // HSCONTENTCOTROLLER_H

// End of file