/*

* Copyright (c) 2005-2009 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:  Property conditions for boolean property values

*

*/

#ifndef __MDEBOOLPROPERTYCONDITION_H__

#define __MDEBOOLPROPERTYCONDITION_H__

#include <mdepropertycondition.h>

/* Forward declarations. */

class CMdEPropertyDef;

class CMdCSerializationBuffer;

/**

 * Property conditions for boolean property values. The condition is true 

 * when the property's value matches the condition's boolean value.

 */

NONSHARABLE_CLASS(CMdEBoolPropertyCondition) : public CMdEPropertyCondition

	{

	public:

	/**

	 *  First-phase constructor

	 */

	static CMdEBoolPropertyCondition* NewL( const CMdEPropertyDef& aPropertyDef, 

            TBool aValue );

	/**

	 *  First-phase constructor

	 */

	static CMdEBoolPropertyCondition* NewLC( const CMdEPropertyDef& aPropertyDef, 

            TBool aValue );

	/**

	 * Destructor.

	 */

	virtual ~CMdEBoolPropertyCondition();

	/* Methods. */

    /**

     * Returns the boolean condition value.

     */

    IMPORT_C TBool Value() const;

    /**

     * Get possible query's internal optimization flags from condition.

     *

     * @param aFlaga query's internal optimization flags

     * @return last level internal optimization flags

     */

    TUint32 InternalQueryOptimizationFlags(TUint32& aFlags);

    /**

     * Get required size of serialized buffer when this is serialized.

     *

     * @return required size of serialized buffer

     */

    TUint32 RequiredBufferSize() const;

    /**

     * Serialize own data to serialized buffer (correct position must be set 

     * before calling) and return new position of serialized buffer.

	 *

     * @param aBuffer  serialized buffer.

     */

    void SerializeL(CMdCSerializationBuffer& aBuffer,

    		TMdCOffset& aFreespaceOffset) const;

private:

	/**

	 * Constructor. 

	 *

	 * @param aValue  boolean value

	 */

	CMdEBoolPropertyCondition(const CMdEPropertyDef& aPropertyDef, 

                              TBool aValue);

	/**

	 * Second-phase constructor.

	 */

	void ConstructL();

private:

    /** The boolean value to compare against. */

    TBool iValue;

    };

#endif  // __MDEBOOLPROPERTYCONDITION_H__