1 /*

     2 * Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef C_HNCOMPLEXCONDITION_H

    21 #define C_HNCOMPLEXCONDITION_H

    22 

    23 #include <e32base.h>

    24 #include <e32hashtab.h>

    25 #include <xmlengelement.h>

    26 

    27 #include "hnconditioninterface.h"

    28 

    29 class CLiwGenericParamList;

    30 

    31 /**

    32  * Complex condition.

    33  * 

    34  * This class is designed to support complex conditions in the xml configuration.

    35  *  

    36  * @lib hnmetadatamodel

    37  * @since S60 v3.2

    38  * @ingroup group_hnmetadatamodel

    39  */

    40 NONSHARABLE_CLASS(CHnComplexCondition) : public CHnConditionInterface

    41     {

    42 public:

    43 

    44      

    45     /**

    46      * Standard factory function.

    47      * 

    48      * @param aElement Xml element.

    49      * @return Fully constructed object.

    50      */

    51     static CHnComplexCondition* NewL( TDesC8 & aElement );

    52 

    53     /**

    54      * Standard C++ Destructor

    55      */

    56     ~CHnComplexCondition();

    57     

    58     /**

    59      * Returns result.

    60      *

    61      * @since S60 v3.2

    62      * @param aQueryResults Results of query.

    63      * @param aPos Position in the list.

    64      * @return True if condition of true, otherwise false.

    65      */    

    66     TBool ResultL( const CLiwGenericParamList& aQueryResults, TInt aPos );  

    67     

    68 protected:

    69     

    70     /**

    71      *  Standard C++ Constructor

    72      */

    73     CHnComplexCondition();

    74 

    75     /**

    76      * Standard symbian second phase constructor.

    77      * 

    78      * @param aElement Xml element.

    79      */

    80     void ConstructL( TDesC8 & aElement );

    81        

    82     /**

    83      * Prepares the condition for processng.

    84      * Removes excessive white characters and 

    85      * superfluous parentheses

    86      * 

    87      * @param aConditionString Condition string.

    88      */

    89     TBool CheckForOrOnTheSameLevelL( TDesC8 & aConditionString );

    90     

    91 protected: // data

    92         

    93     /**

    94      * Logical operation between conditions.

    95      */

    96     TOperator iOperation;

    97     

    98     /**

    99      * Own - left side of the condition.

   100      */

   101     CHnConditionInterface* iLeftCondition;

   102     

   103     /**

   104      * Own - right side of the condition.

   105      */

   106     CHnConditionInterface* iRightCondition;

   107     

   108     };

   109 

   110 #endif // C_HNCOMPLEXCONDITION_H

   111