--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/localconnectivityservice/dun/atext/src/DunAtNvramListen.cpp	Tue Aug 31 16:03:15 2010 +0300
@@ -0,0 +1,190 @@
+/*
+* Copyright (c) 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:  AT NVRAM status change listener and notifier
+*
+*/
+
+
+#include "DunAtNvramListen.h"
+#include "DunDebug.h"
+
+// ---------------------------------------------------------------------------
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CDunAtNvramListen* CDunAtNvramListen::NewL( RATExt* aAtCmdExt,
+                                            RATExtCommon* aAtCmdExtCommon )
+    {
+    CDunAtNvramListen* self = NewLC( aAtCmdExt, aAtCmdExtCommon );
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CDunAtNvramListen* CDunAtNvramListen::NewLC( RATExt* aAtCmdExt,
+                                             RATExtCommon* aAtCmdExtCommon )
+    {
+    CDunAtNvramListen* self = new (ELeave) CDunAtNvramListen(
+        aAtCmdExt,
+        aAtCmdExtCommon );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// Destructor.
+// ---------------------------------------------------------------------------
+//
+CDunAtNvramListen::~CDunAtNvramListen()
+    {
+    FTRACE(FPrint( _L("CDunAtNvramListen::~CDunAtNvramListen()") ));
+    ResetData();
+    FTRACE(FPrint( _L("CDunAtNvramListen::~CDunAtNvramListen() complete") ));
+    }
+
+// ---------------------------------------------------------------------------
+// Resets data to initial values
+// ---------------------------------------------------------------------------
+//
+void CDunAtNvramListen::ResetData()
+    {
+    FTRACE(FPrint( _L("CDunAtNvramListen::ResetData()") ));
+    // APIs affecting this:
+    // IssueRequest()
+    Stop();
+    // Internal
+    Initialize();
+    FTRACE(FPrint( _L("CDunAtNvramListen::ResetData() complete") ));
+    }
+
+// ---------------------------------------------------------------------------
+// Starts waiting for NVRAM status changes
+// ---------------------------------------------------------------------------
+//
+TInt CDunAtNvramListen::IssueRequest()
+    {
+    FTRACE(FPrint( _L("CDunAtNvramListen::IssueRequest()") ));
+    if ( iNvramHandleState != EDunStateIdle )
+        {
+        FTRACE(FPrint( _L("CDunAtNvramListen::IssueRequest() (not ready) complete") ));
+        return KErrNotReady;
+        }
+    if ( !iStarted )
+        {
+        iAtCmdExtCommon->GetNvramStatus( iNvramBuffer );
+        iAtCmdExt->BroadcastNvramStatusChange( iNvramBuffer );
+        iStarted = ETrue;
+        }
+    iStatus = KRequestPending;
+    iAtCmdExtCommon->ReceiveNvramStatusChange( iStatus, iNvramBuffer );
+    SetActive();
+    iNvramHandleState = EDunStateNvramListening;
+    FTRACE(FPrint( _L("CDunAtNvramListen::IssueRequest() complete") ));
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// Stops waiting for NVRAM status changes
+// ---------------------------------------------------------------------------
+//
+TInt CDunAtNvramListen::Stop()
+    {
+    FTRACE(FPrint( _L("CDunAtNvramListen::Stop()") ));
+    if ( iNvramHandleState != EDunStateNvramListening )
+        {
+        FTRACE(FPrint( _L("CDunAtNvramListen::Stop() (not ready) complete" )));
+        return KErrNotReady;
+        }
+    iAtCmdExtCommon->CancelReceiveNvramStatusChange();
+    Cancel();
+    iNvramHandleState = EDunStateIdle;
+    FTRACE(FPrint( _L("CDunAtNvramListen::Stop() complete") ));
+    // Note: Don't mark iStarted to EFalse here!
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// CDunAtNvramListen::CDunAtNvramListen
+// ---------------------------------------------------------------------------
+//
+CDunAtNvramListen::CDunAtNvramListen( RATExt* aAtCmdExt,
+                                      RATExtCommon* aAtCmdExtCommon ) :
+    CActive( EPriorityHigh ),
+    iAtCmdExt( aAtCmdExt ),
+    iAtCmdExtCommon( aAtCmdExtCommon )
+    {
+    Initialize();
+    }
+
+// ---------------------------------------------------------------------------
+// CDunAtNvramListen::ConstructL
+// ---------------------------------------------------------------------------
+//
+void CDunAtNvramListen::ConstructL()
+    {
+    FTRACE(FPrint( _L("CDunAtNvramListen::ConstructL()") ));
+    if ( !iAtCmdExt || !iAtCmdExtCommon )
+        {
+        User::Leave( KErrGeneral );
+        }
+    CActiveScheduler::Add( this );
+    FTRACE(FPrint( _L("CDunAtNvramListen::ConstructL() complete") ));
+    }
+
+// ---------------------------------------------------------------------------
+// Initializes this class
+// ---------------------------------------------------------------------------
+//
+void CDunAtNvramListen::Initialize()
+    {
+    // Don't initialize iAtCmdExt here (it is set through NewL)
+    // Don't initialize iAtCmdExtCommon here (it is set through NewL)
+    iNvramHandleState = EDunStateIdle;
+    iStarted = EFalse;
+    }
+
+// ---------------------------------------------------------------------------
+// From class CActive.
+// Gets called when NVRAM has changed
+// ---------------------------------------------------------------------------
+//
+void CDunAtNvramListen::RunL()
+    {
+    FTRACE(FPrint( _L("CDunAtNvramListen::RunL()") ));
+    iNvramHandleState = EDunStateIdle;
+    TInt retTemp = iStatus.Int();
+    if ( retTemp != KErrNone )
+        {
+        FTRACE(FPrint( _L("CDunAtNvramListen::RunL() (ERROR) complete (%d)"), retTemp ));
+        return;
+        }
+    iAtCmdExt->BroadcastNvramStatusChange( iNvramBuffer );
+    IssueRequest();
+    FTRACE(FPrint( _L("CDunAtNvramListen::RunL() complete") ));
+    }
+
+// ---------------------------------------------------------------------------
+// From class CActive.
+// Gets called on cancel
+// ---------------------------------------------------------------------------
+//
+void CDunAtNvramListen::DoCancel()
+    {
+    FTRACE(FPrint( _L("CDunAtNvramListen::DoCancel()") ));
+    FTRACE(FPrint( _L("CDunAtNvramListen::DoCancel() complete") ));
+    }