/*

* Copyright (c) 2007 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:   layout attribute setters base implementation header.

*

*/

#ifndef ALFCOMMONLAYOUTATTRIBUTESETTER_H

#define ALFCOMMONLAYOUTATTRIBUTESETTER_H

#include <osn/osndefines.h>

#include <memory>

#include <osn/ustring.h>

#include "alf/alfcommonvisualattributesetter.h"

using namespace osncore;

using std::auto_ptr;

namespace Alf

    {

/**

 *  @class AlfCommonLayoutAttributeSetter alfcommonlayoutattributesetter.h "alf/alfcommonlayoutattributesetter.h"

 *  Base implementation for layout attribute setters. Attribute setters for custom layouts can derive from this 

 *  class.

 *  @see IAlfAttributeSetter 

 *

 *  @lib alfwidgetmodel.lib

 *  @since S60 ?S60_version

 *  @status Draft

 *  @interfaces IAlfAttributeSetter

 */

class AlfCommonLayoutAttributeSetter : public AlfCommonVisualAttributeSetter

    {

public:

    /**

     * Constructor.

     *

     * @param aType Type of the attribute setter.

     */

    OSN_IMPORT AlfCommonLayoutAttributeSetter();

    /**

     * Destructor.

     */

    OSN_IMPORT virtual ~AlfCommonLayoutAttributeSetter();

    /**

     * Sets the attribute values to the target visual.

     * @exception osncore::AlfVisualException Thrown with error code osncore::EInvalidVisual if aVisual is not 

     *                                        a layout.

     *

     * @since S60 ?S60_version

     * @param aVisual The target visual. Doesn't take ownership

     * @param aContainer The container holding the value of the attributes.

     *        Ownership of the object is not transferred.

     * @param aData Used with data attributes to fetch the data.

     */

    OSN_IMPORT virtual void setAttributeValue (

        CAlfVisual &aVisual,

        AlfAttributeContainer* aContainer,

        IAlfMap* aData );

    /**

     * Creates a command to change the value of an attribute in the target visual gradually with a transition.

     *

     * @param aVisual The target visual. Doesn't take ownership

     * @param aContainer The container holding the new value of the attribute. Ownership of the object is not transferred.

     * @param aData Not used currently.

     * @param aTransitionTime Time used for the transition.

     * @param aRefVisual Optional reference visual. If not NULL, the target value of the attribute is defined by adding

     * the value specific by aContainer to the corresponding attribute value in the reference visual.

     * @ret The command to gradually change the attribute in the target visual.

     */

    OSN_IMPORT virtual TAlfCommand* createCommand(

        CAlfVisual& aVisual,

        AlfAttributeContainer* aContainer,

        IAlfMap* aData,

        int aTransitionTime = 0,

        CAlfVisual* aRefVisual = NULL );

    /**

     * Creates commands to change the given attribute values in the target visual gradually with a transition.

     * Then sends the commands via the ALF environment.

     *

     * @param aVisual The target visual. Doesn't take ownership

     * @param aContainer The attribute container holding the attribute value(s)

     * used by the attribute setter. Ownership is not transferred. The container

     * can hold new values for multiple different attributes, in which case several

     * commands are executed.

     * @param aRefVisual Optional reference visual. If not NULL, the target value of the attribute is defined by adding

     * the value specific by aContainer to the corresponding attribute value in the reference visual.

     */

    OSN_IMPORT virtual void createAndSendCommands(

        CAlfVisual& aVisual,

        AlfAttributeContainer* aContainer,

        CAlfVisual* aRefVisual = NULL );

protected:

    /**

     * From AlfCommonVisualAttributeSetter

     * Sets an value of a static attribute to target visual immediately without a transition.

     *

     * @param aVisual The target visual. Doesn't take ownership

     * @param aAttr The attribute to process. Doesn't take ownership

     * @param aContainer The container holding attributes. Ownership of the object is not transferred.

     */

    void handleStaticAttribute(CAlfVisual &aVisual, AlfAttribute& aAttr,

                               AlfAttributeContainer& aContainer);

    /**

     * From AlfCommonVisualAttributeSetter

     * Sets an dynamic attribute value in the target visual using transitions defined in attributes

     *

     * @param aVisual The target visual. Doesn't take ownership

     * @param aAttr The attribute to process. Doesn't take ownership

     * @param aContainer The container holding attributes. Ownership of the object is not transferred.

     */

    void handleDynamicAttribute(CAlfVisual &aVisual, AlfAttribute& aAttr,

                                AlfAttributeContainer& aContainer);

    /**

     * From AlfCommonVisualAttributeSetter

     * Sets an value for static attribute in the target visual immediately without a transition using data in map.

     *

     * @param aVisual The target visual. Doesn't take ownership

     * @param aAttr The attribute to process. Doesn't take ownership

     * @param aContainer The container holding attributes. Ownership of the object is not transferred.

     * @param aData Contains data.Ownership of the object is not transferred.

     */

    void handleStaticDataAttribute(CAlfVisual &aVisual, AlfAttribute& aAttr,

                                   AlfAttributeContainer& aContainer, IAlfMap* aData);

    /**

     * From AlfCommonVisualAttributeSetter

     * Sets an value for dynamic attribute value in the target visual using transitions and data in map.

     *

     * @param aVisual The target visual. Doesn't take ownership

     * @param aAttr The attribute to process. Doesn't take ownership

     * @param aContainer The container holding attributes. Ownership of the object is not transferred.

     * @param aData Contains data.Ownership of the object is not transferred.

     */

    void handleDynamicDataAttribute(CAlfVisual &aVisual, AlfAttribute& aAttr,

                                    AlfAttributeContainer& aContainer, IAlfMap* aData);

    };

    } // namespace Alf

#endif // ALFCOMMONLAYOUTATTRIBUTESETTER_H