diff -r 000000000000 -r f72a12da539e idlehomescreen/xmluicontroller/inc/policyevaluator.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/xmluicontroller/inc/policyevaluator.h	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,122 @@
+/*
+* Copyright (c) 2005-2007 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:  Policy evaluator
+*
+*/
+
+
+#ifndef C_POLICYEVALUATOR_H
+#define C_POLICYEVALUATOR_H
+
+
+#include <e32base.h>
+#include "aipolicyelement.h"
+
+class CXnNodeAppIf;
+   
+namespace AiXmlUiController
+{
+    
+    
+/**
+ *  @ingroup group_xmluicontroller
+ * 
+ *  Policy evaluator class
+ *
+ *  @lib AiXmlUiMain
+ */
+class CPolicyEvaluator : public CBase
+    {
+
+public:
+
+    static CPolicyEvaluator* NewL();
+
+    virtual ~CPolicyEvaluator();
+
+    /**
+     * Evaluates content policy for ui element. 
+     *
+     * @param aTarget target ui element
+     * @param aPolicyArray array of found policies to fill
+     * @leave 
+     */
+    void EvaluateContentPolicyL( CXnNodeAppIf& aTarget,
+                                 RAiPolicyElementArray& aPolicyArray );
+    
+    /**
+     * Evaluates empty content policy for ui element. 
+     *
+     * @param aTarget target ui element
+     * @param aPolicyArray array of found policies to fill
+     * @leave 
+     */
+    void EvaluateEmptyContentPolicyL( CXnNodeAppIf& aTarget,
+                                      RAiPolicyElementArray& aPolicyArray );
+
+    /**
+     * Evaluates Visiblity policy for ui element. 
+     *
+     * @param aTarget target ui element
+     * @param aResource resource element to publish
+     * @param aPolicyArray array of found policies to fill
+     * @leave 
+     */
+    void EvaluateVisibilityPolicyL( CXnNodeAppIf& aTarget,
+                                    RAiPolicyElementArray& aPolicyArray );
+
+    /**
+     * Evaluates ContentChanged policy for ui element. 
+     *
+     * @param aTarget target ui element
+     * @param aResource resource element to publish
+     * @param aPolicyArray array of found policies to fill
+     * @leave 
+     */
+    void EvaluateContentChangedPolicyL( CXnNodeAppIf& aTarget,
+                                    RAiPolicyElementArray& aPolicyArray );
+
+    /**
+     * Evaluates resource policy for ui element. 
+     *
+     * @param aTarget target ui element
+     * @param aResource resource element to publish
+     * @param aPolicyArray array of found policies to fill
+     * @leave 
+     */
+    void EvaluateResourcePolicyL( CXnNodeAppIf& aTarget,
+                                  CXnNodeAppIf& aResource,
+                                  RAiPolicyElementArray& aPolicyArray );
+private:
+
+    CPolicyEvaluator();
+
+    void ConstructL();
+    
+    void EvaluatePolicyL( CXnNodeAppIf& aTarget,
+                          RAiPolicyElementArray& aPolicyArray,
+                          const TDesC8& aPolicyClass );
+    
+    TBool MatchCondition( const TDesC8& aId,
+                          const TDesC8& aCondition );
+                          
+    TBool MatchVisibilityConditionL( const TDesC8& aCondition,
+                                    CXnNodeAppIf& aProperty,
+                                    RAiPolicyElementArray& aPolicyArray );
+                          
+    };
+
+} // namespace AiXmlUiController
+    
+#endif // C_POLICYEVALUATOR_H