/*

* Copyright (c) 2002-2004 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:

* Xuikon component base class

*

*/

#ifndef XNCOMPONENT_H

#define XNCOMPONENT_H

// System includes

#include <e32base.h>

// Forward declarations

class CXnControlAdapter;

class CXnNodePluginIf;

namespace XnComponentInterface

    {

    class MXnComponentInterface;

    }

// Class declaration

/**

 *  Xuikon component base class.

 *

 *  @ingroup group_xnlayoutengine

 *  @since Series 60 3.1

 */

class CXnComponent : public CBase

    {

public: // Constructors and destructor

    /**

     * Two-phased constructor.

     * @param aType Type.

     */

    IMPORT_C static CXnComponent* NewL();

    /**

     * Destructor.

     */

    IMPORT_C virtual ~CXnComponent();

public:

    // New functions

    /**

     * Sets a control adapter.

     *

     * @since Series 60 3.1

     * @param aAdapter Adapter.

     */

    IMPORT_C void SetControlAdapter( CXnControlAdapter* aAdapter );

    /**

     * Returns the control adapter.

     *

     * @since Series 60 3.1

     * @return Control adapter.

     */

    IMPORT_C CXnControlAdapter* ControlAdapter();

    /**

     * Returns component's node.

     *

     * @since Series 60 3.1

     * @return Node.

     */

    IMPORT_C CXnNodePluginIf* Node();

    /**

     * Sets the component's node.

     *

     * @since Series 60 3.1

     * @param aNode Node

     */

    IMPORT_C void SetNode( CXnNodePluginIf& aNode );

    /**

     * Enter power save mode. This is done when application goes to background

     * or lights go off.

     * Derived classes should override this function and stop animations,

     * timers etc. when the function is called.

     */

    IMPORT_C virtual void EnterPowerSaveModeL();

    /**

     * Exit power save mode. This is done when application comes to foreground

     * or lights go on.

     * Derived classes should override this function and restart animations,

     * timers etc. when the function is called.

     */

     IMPORT_C virtual void ExitPowerSaveModeL();

    /**

     * Create a component interface according to the given type.

     * @param aType Type of the interface to create

     * @return Created interface or NULL if the provided type is not supported.

     */

    IMPORT_C virtual XnComponentInterface::MXnComponentInterface* MakeInterfaceL(

        const TDesC8& aType );

protected:

    /**

     * C++ default constructor.

     */

    IMPORT_C CXnComponent();

    /**

     * Two-phased constructor.

     */

    IMPORT_C void ConstructL();

private:

    // Data

    /**

     * Pointer to control adapter.

     * Own.

     */

    CXnControlAdapter* iAdapter;

    /**

     * Component's node.

     * Not own.

     */

    CXnNodePluginIf* iNode;

    };

#endif