stif/ConsoleUI/inc/CallBack.h
branchRCL_3
changeset 59 8ad140f3dd41
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stif/ConsoleUI/inc/CallBack.h	Wed Oct 13 16:17:58 2010 +0300
@@ -0,0 +1,211 @@
+/*
+* Copyright (c) 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: This file contains the header file of the CCallBack 
+* class.
+*
+*/
+
+#ifndef CALLBACK_H
+#define CALLBACK_H
+
+//  INCLUDES
+#include <e32base.h>
+
+// CONSTANTS
+// None
+
+// MACROS
+// None
+
+// DATA TYPES
+// None
+
+// FUNCTION PROTOTYPES
+// None
+
+// FORWARD DECLARATIONS
+// None
+
+// CLASS DECLARATION
+
+// DESCRIPTION
+// Simple class for callbacks.
+
+class CCallBack 
+    :public CAsyncCallBack
+    {
+    public: // Enumerations
+
+    private: // Enumerations
+
+    public:  // Constructors and destructor
+        /**
+        * C++ constructor.
+        */
+        CCallBack( TInt aPriority ):CAsyncCallBack( aPriority ) {}
+
+        /**
+        * C++ constructor.
+        */
+        CCallBack( TCallBack& aCallBack, TInt aPriority ):
+            CAsyncCallBack( aCallBack, aPriority ) {}
+    
+    public: // New functions
+        /**
+        * Return reference to TRequestStatus member.
+        */
+        TRequestStatus& Status(){ return iStatus; }
+
+        /**
+        * Set CCallBack active.
+        */
+        void SetActive()
+            { 
+            iStatus = KRequestPending; 
+            CActive::SetActive(); 
+            };
+    
+    public: // Functions from base classes
+   
+        /**
+        *
+        */
+        void RunL(){ iCallBack.CallBack(); }
+
+    protected:  // New functions
+        
+    protected:  // Functions from base classes
+        
+    private:
+
+	public:     // Data
+    
+	protected:  // Data
+
+    private:    // Data
+
+    public:     // Friend classes
+
+    protected:  // Friend classes
+
+    private:    // Friend classes
+
+    };
+
+
+template <class T>
+class CActiveCallback 
+        :public CActive
+    {
+    public: // Enumerations
+
+        /**
+        * Callback function type definitions
+        */
+       typedef void (T::* TestFunction)();    
+
+    private: // Enumerations
+
+    public:  // Constructors and destructor
+        /**
+        * C++ constructor.
+        */
+        CActiveCallback ( T* aClass, TestFunction aFunction ) : CActive (EPriorityStandard)
+            {
+            iMethod = aFunction;
+            iClass = aClass;
+            iCompleted = EFalse;
+            }
+    
+    public: // New functions
+        /**
+        * Return reference to TRequestStatus member.
+        */
+        TRequestStatus& Status(){ return iStatus; }
+
+        /**
+        * Set active object to active and return reference to TRequestStatus member
+        */
+        TRequestStatus& Activate()
+            {        
+            iCompleted = EFalse;
+            SetActive();
+            return iStatus;
+            }
+
+        /**
+        * Is callback completed?
+        */
+        TBool isCompleted()
+            {
+            return iCompleted;
+            }
+    
+    public: // Functions from base classes
+   
+        /**
+        * Call the callback
+        */
+        void RunL()
+            {
+            iCompleted = ETrue;
+            if ( iMethod != NULL )
+                {
+                (iClass->*iMethod) ();
+                }        
+            }
+
+        /**
+        * Just forward errors to framework
+        */
+        TInt RunError ( TInt aError )
+            {
+            return aError;
+            }
+
+        /**
+        * Cancel is not supported.
+        */
+        void DoCancel ()
+            {  
+            }
+
+    protected:  // New functions
+        
+    protected:  // Functions from base classes
+        
+    private:
+
+
+
+	public:     // Data
+    
+	protected:  // Data
+
+    private:    // Data
+        TestFunction iMethod;           // Pointer to method to be called
+        T* iClass;                      // Pointer to calls to be called
+        TBool iCompleted;               // Is callback completed?
+
+    public:     // Friend classes
+
+    protected:  // Friend classes
+
+    private:    // Friend classes
+
+    };
+
+#endif      // CALLBACK_H  
+
+// End of File