--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/startupservices/Startup/syserrcmd/tsrc/syserrcmdtest/inc/asyncrequesthandler.h	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,220 @@
+/*
+ * 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:
+ *
+ */
+
+#ifndef ASYNCREQUESTHANDLER_H
+#define ASYNCREQUESTHANDLER_H
+
+// SYSTEM INCLUDE FILES
+#include <e32base.h>
+
+// DATA TYPES
+_LIT( KPanicCat, "ASYNCREQUESTHANDLER" );
+
+/** Panic codes */
+enum TArhPanicCodes
+    {
+    EArhNone,
+    EArhRequestPending
+    };
+
+// CLASS DECLARATION
+
+/**
+ * A template class for handling asynchronous requests.
+ *
+ * @lib None.
+ * @since S60 TB9.2
+ */
+template <class T>
+NONSHARABLE_CLASS( CAsyncRequestHandler ): public CActive
+    {
+public:
+    
+    // TYPE DEFINTIONS
+    
+    /** HandleIssueRequest callback */
+    typedef void ( T::*HandleIssueRequest )( TRequestStatus& );
+    
+    /** HandleRunL callback */
+    typedef void ( T::*HandleRunL )( TInt );
+    
+    /** HandleRunError callback */
+    typedef TInt ( T::*HandleRunError )( TInt );
+    
+    /** HandleDoCancel callback */
+    typedef void ( T::*HandleDoCancel )();
+    
+    // DATA TYPES
+    
+    /** Request type */
+    enum TAsyncRequestType
+        {
+        ERequestOneShot,
+        ERequestContinuous
+        };
+    
+public:
+
+    /**
+     * Symbian two phased constructor.
+     * 
+     * @since S60 TB9.2
+     * @param None.
+     * @return CAsyncRequestHandler*
+     */
+    static CAsyncRequestHandler* NewL( T& aPtr,
+        HandleIssueRequest aHandleIssueRequest,
+        HandleRunL aHandleRunL,
+        HandleRunError aHandleRunError,
+        HandleDoCancel aHandleDoCancel,
+        TAsyncRequestType aType = ERequestContinuous )
+        {
+        CAsyncRequestHandler* self = CAsyncRequestHandler::NewLC( aPtr,
+            aHandleIssueRequest,
+            aHandleRunL,
+            aHandleRunError,
+            aHandleDoCancel,
+            aType );
+        CleanupStack::Pop( self );
+        return self;
+        }
+    
+    /**
+     * Symbian two phased constructor.
+     * Instance is left in the cleanup stack.
+     * 
+     * @since S60 TB9.2
+     * @param None.
+     * @return CAsyncRequestHandler*
+     */
+    static CAsyncRequestHandler* NewLC( T& aPtr,
+        HandleIssueRequest aHandleIssueRequest,
+        HandleRunL aHandleRunL,
+        HandleRunError aHandleRunError,
+        HandleDoCancel aHandleDoCancel,
+        TAsyncRequestType aType = ERequestContinuous )
+        {
+        CAsyncRequestHandler* self = new CAsyncRequestHandler( aPtr,
+            aHandleIssueRequest,
+            aHandleRunL,
+            aHandleRunError,
+            aHandleDoCancel,
+            aType );
+        CleanupStack::PushL( self );
+        return self;
+        }
+
+    /**
+     * C++ destructor.
+     */
+    virtual ~CAsyncRequestHandler()
+        {
+        Cancel();
+        }
+    
+public: // New methods
+    
+    /**
+     * Issues a new request.
+     * Panic will occur if there already is a request pending.
+     * 
+     * @since TB9.2
+     * @param None.
+     * @return None.
+     */
+    void IssueRequest()
+        {
+        __ASSERT_DEBUG( !IsActive(),
+            User::Panic( KPanicCat, EArhRequestPending ) );
+        
+        // Call the HandleIssueRequest from the template class and set active
+        ( iPtr.*iHandleIssueRequest )( iStatus );
+        SetActive();
+        }
+
+protected: // From base classes
+    
+    // @see CActive
+    void RunL()
+        {
+        // Check result and issue request again
+        TInt status = iStatus.Int();
+        if( iType == ERequestContinuous )
+            {
+            IssueRequest();
+            }
+        
+        // Call the HandleRunL from the template class
+        ( iPtr.*iHandleRunL )( status );
+        }
+
+    // @see CActive
+    TInt RunError( TInt aError )
+        {
+        // Call the HandleRunError from the template class
+        TInt err = ( iPtr.*iHandleRunError )( aError );
+        return err;
+        }
+
+    // @see CActive
+    void DoCancel()
+        {
+        // Call the HandleDoCancel from the template class
+        ( iPtr.*iHandleDoCancel )();
+        }
+
+private:
+
+    CAsyncRequestHandler( T& aPtr,
+        HandleIssueRequest aHandleIssueRequest,
+        HandleRunL aHandleRunL,
+        HandleRunError aHandleRunError,
+        HandleDoCancel aHandleDoCancel,
+        TAsyncRequestType aType = ERequestContinuous ):
+        CActive( CActive::EPriorityStandard ),
+        iPtr( aPtr ),
+        iHandleIssueRequest( aHandleIssueRequest ),
+        iHandleRunL( aHandleRunL ),
+        iHandleRunError( aHandleRunError ),
+        iHandleDoCancel( aHandleDoCancel ),
+        iType( aType )
+        {
+        CActiveScheduler::Add( this );
+        }
+
+private: // Data
+    
+    /** Pointer to the template class */
+    T& iPtr;
+    
+    /** HandleIssueRequest function pointer */
+    HandleIssueRequest iHandleIssueRequest;
+    
+    /** HandleRunL function pointer */
+    HandleRunL iHandleRunL;
+    
+    /** HandleRunError function pointer */
+    HandleRunError iHandleRunError;
+    
+    /** HandleDoCancel function pointer */
+    HandleDoCancel iHandleDoCancel;
+    
+    /** Request type */
+    TAsyncRequestType iType;
+    };
+
+#endif // ASYNCREQUESTHANDLER_H