1 /*

     2 * Copyright (c) 2005-2007 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:  Policy evaluator

    15 *

    16 */

    17 

    18 

    19 #ifndef C_POLICYEVALUATOR_H

    20 #define C_POLICYEVALUATOR_H

    21 

    22 

    23 #include <e32base.h>

    24 #include "aipolicyelement.h"

    25 

    26 class CXnNodeAppIf;

    27    

    28 namespace AiXmlUiController

    29 {

    30     

    31     

    32 /**

    33  *  @ingroup group_xmluicontroller

    34  * 

    35  *  Policy evaluator class

    36  *

    37  *  @lib AiXmlUiMain

    38  */

    39 class CPolicyEvaluator : public CBase

    40     {

    41 

    42 public:

    43 

    44     static CPolicyEvaluator* NewL();

    45 

    46     virtual ~CPolicyEvaluator();

    47 

    48     /**

    49      * Evaluates content policy for ui element. 

    50      *

    51      * @param aTarget target ui element

    52      * @param aPolicyArray array of found policies to fill

    53      * @leave 

    54      */

    55     void EvaluateContentPolicyL( CXnNodeAppIf& aTarget,

    56                                  RAiPolicyElementArray& aPolicyArray );

    57     

    58     /**

    59      * Evaluates empty content policy for ui element. 

    60      *

    61      * @param aTarget target ui element

    62      * @param aPolicyArray array of found policies to fill

    63      * @leave 

    64      */

    65     void EvaluateEmptyContentPolicyL( CXnNodeAppIf& aTarget,

    66                                       RAiPolicyElementArray& aPolicyArray );

    67 

    68     /**

    69      * Evaluates Visiblity policy for ui element. 

    70      *

    71      * @param aTarget target ui element

    72      * @param aResource resource element to publish

    73      * @param aPolicyArray array of found policies to fill

    74      * @leave 

    75      */

    76     void EvaluateVisibilityPolicyL( CXnNodeAppIf& aTarget,

    77                                     RAiPolicyElementArray& aPolicyArray );

    78 

    79     /**

    80      * Evaluates ContentChanged policy for ui element. 

    81      *

    82      * @param aTarget target ui element

    83      * @param aResource resource element to publish

    84      * @param aPolicyArray array of found policies to fill

    85      * @leave 

    86      */

    87     void EvaluateContentChangedPolicyL( CXnNodeAppIf& aTarget,

    88                                     RAiPolicyElementArray& aPolicyArray );

    89 

    90     /**

    91      * Evaluates resource policy for ui element. 

    92      *

    93      * @param aTarget target ui element

    94      * @param aResource resource element to publish

    95      * @param aPolicyArray array of found policies to fill

    96      * @leave 

    97      */

    98     void EvaluateResourcePolicyL( CXnNodeAppIf& aTarget,

    99                                   CXnNodeAppIf& aResource,

   100                                   RAiPolicyElementArray& aPolicyArray );

   101 private:

   102 

   103     CPolicyEvaluator();

   104 

   105     void ConstructL();

   106     

   107     void EvaluatePolicyL( CXnNodeAppIf& aTarget,

   108                           RAiPolicyElementArray& aPolicyArray,

   109                           const TDesC8& aPolicyClass );

   110     

   111     TBool MatchCondition( const TDesC8& aId,

   112                           const TDesC8& aCondition );

   113                           

   114     TBool MatchVisibilityConditionL( const TDesC8& aCondition,

   115                                     CXnNodeAppIf& aProperty,

   116                                     RAiPolicyElementArray& aPolicyArray );

   117                           

   118     };

   119 

   120 } // namespace AiXmlUiController

   121     

   122 #endif // C_POLICYEVALUATOR_H