--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contextframework/cfw/inc/basicoperationsplugin/cfcount.h	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,177 @@
+/*
+* Copyright (c) 2007-2008 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:  CCFCount class declaration.
+*
+*/
+
+
+
+#ifndef C_CFCOUNT_H
+#define C_CFCOUNT_H
+
+// INCLUDES
+#include "cfcontextoperation.h"
+
+// FORWARD DECLARATIONS
+class CCFContextObject;
+
+// CLASS DECLARATION
+
+/**
+*  This class implements count -operation on Context Framework Scripts.
+*
+*  @lib CFScriptEngine
+*  @since S60 v5.0
+*/
+NONSHARABLE_CLASS( CCFCount ): public CCFContextOperation
+    {
+public: // Public types
+
+    /** Count types. */
+    enum TCountType {
+        ECountTypeRemain, /** Count value remains true after operation is evaluated to true. */
+        ECountTypeChange, /** Count value is changed back from true to false after receiving the next counted context. */
+        ECountTypeTrigger /** Count triggers one evaluation when count's value is true, after which count changes it's value back to false. */
+    };
+
+public: // Constructors and destructor
+
+    /**
+    * Creates and parses a CCFCount instance from an xml node.
+    * @param aServices is the operation services interface for nodes.
+    * @param aParent is the parent of this node or NULL if this is a root.
+    *   The ownership of the parent is not transferred.
+    * @param aNode is the node to be parsed.
+    * @return a pointer to the created instance of CCFCount, or NULL if the node
+    *   is not this count node. May leave with any system wide error code.
+    */
+    static CCFCount* ParseL( MCFOperationServices& aServices,
+            CCFOperationNode* aParent,
+            CMDXMLNode& aNode );
+
+    /**
+    * Destructor.
+    */
+    ~CCFCount();
+
+public: // From CCFOperationNode
+
+    /**
+    * Internalizes operation.
+    * @param aStream Read stream.
+    * @return None.
+    */
+    void InternalizeL( RReadStream& aStream );
+
+    /**
+    * Externalizes operation.
+    * @param aStream Write stream.
+    * @return None.
+    */
+    void ExternalizeL( RWriteStream& aStream );
+
+    /**
+    * Cleanup deletes possible persistent data file.
+    * This is called by the context framework when the script is uninstalled
+    * from the system.
+    * @return None.
+    */ 
+    void Cleanup();
+
+protected: // From CCFContextOperation
+
+    /**
+    * Tests if this listener requires notification of all contexts.
+    * Count type trigger requires all contexts, other types do not.
+    * @returns ETrue if this listener is interested in all contexts,
+    *   EFalse otherwise.
+    */
+    TBool IsAllRequired() const;
+
+    /**
+    * Evaluates a node with a context.
+    * @param aContext is the context for evaluation.
+    * @param aContextLevelDelay contains the context level delay defined by
+    *  contextRef after the call.
+    * @return ETrue if the operation was evaluated, EFalse otherwise.
+    */
+    TBool Evaluate( const CCFContextObject& aContext,
+            TInt& aContextLevelDelay );
+
+protected: // From CCFOperationNode
+
+    /**
+    * Activates this node by subscribing to a context.
+    * Overrides base class implementation because count must discard the
+    * possible cached context used to pre-evaluate operations during subscribe
+    * context. Otherwise count might be increased based on the cached context.
+    * @return None.
+    */
+    void ActivateL();
+
+    /**
+    * Deactivates this node by removing context subscription.
+    * @return None.
+    */
+    void Deactivate();
+
+protected:
+
+    /**
+    * C++ default constructor.
+    */
+    CCFCount( MCFOperationServices& aServices,
+            CCFOperationNode* aParent,
+            HBufC* aName,
+            HBufC* aSource,
+            const CCFContextOperation::TCmpType aType,
+            const TUint aCount,
+            const TCountType aCountType );
+
+    /**
+    * By default Symbian 2nd phase constructor is private.
+    */
+    void ConstructL( const TDesC& aCmpVal );
+
+private: // New functions
+
+    /**
+    * Evaluates a node with a context.
+    * @param aContext is the context for evaluation.
+    * @return ETrue if the operation was evaluated, EFalse otherwise.
+    */
+    TBool DoEvaluateL( const CCFContextObject& aContext );
+
+    /**
+    * Counts a context if appropriate.
+    * @param aContext is the context for counting.
+    * @return ETrue if the context was counted, otherwise EFalse.
+    */
+    TBool CountContextL( const CCFContextObject& aContext );
+
+protected: // Data
+
+    CCFContextOperation::TCmpType iType;
+    TUint                         iCurrentCount;
+    TBool                         iActive;
+    TBool                         iFinished;
+    TUint                         iCmpCount;
+    TCountType                    iCountType;
+    HBufC*                        iCmpValue;
+    HBufC*                        iPersistencyFile;
+    TBool                         iReEvaluateFromNextContext;
+    };
+
+
+#endif // C_CFCOUNT_H