--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/localconnectivityservice/dun/utils/inc/DunSignalWaiter.h	Tue Aug 31 16:03:15 2010 +0300
@@ -0,0 +1,161 @@
+/*
+* Copyright (c) 2006-2007 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:  Monitors for signal change in RComm local media side
+*
+*/
+
+
+#ifndef C_CDUNSIGNALWAITER_H
+#define C_CDUNSIGNALWAITER_H
+
+#include "DunChanMan.h"
+
+/**
+ *  Class to monitor for signal change in RComm local media side
+ *  This class is needed to avoid unnecessary resource allocation of Dataport
+ *  side when number of supported Dataport ports for DUN is less than the
+ *  number of local media side plugins that use RComm
+ *
+ *  @lib dunutils.lib
+ *  @since S60 v3.2
+ */
+NONSHARABLE_CLASS( CDunSignalWaiter ) : public CActive
+    {
+
+public:
+
+    /**
+     * Two-phased constructor.
+     * @param aChannelCallback Callback to call when notification via
+     *                         MDunChannelAllocator to be made
+     * @return Instance of self
+     */
+	static CDunSignalWaiter* NewL( MDunChannelAllocator* aChannelCallback );
+
+    /**
+    * Destructor.
+    */
+    virtual ~CDunSignalWaiter();
+
+    /**
+     * Resets data to initial values
+     *
+     * @since S60 3.2
+     * @return None
+     */
+    void ResetData();
+
+    /**
+     * Adds callback for RunL error controlling
+     * The callback will be called when error is detected in asynchronous
+     * operation
+     *
+     * @since S60 3.2
+     * @param aCallback Callback to call when line status changes
+     * @return Symbian error code on error, KErrNone otherwise
+     */
+    TInt AddCallback( MDunConnMon* aCallback );
+
+    /**
+     * Sets media to use for this endpoint
+     *
+     * @since S60 3.2
+     * @param aComm RComm pointer to use as the endpoint
+     * @return Symbian error code on error, KErrNone otherwise
+     */
+    TInt SetMedia( RComm* aComm );
+
+    /**
+    * Issues request to start waiting for new data in RComm
+    *
+    * @since S60 3.2
+    * @return Symbian error code on error, KErrNone otherwise
+    */
+    TInt IssueRequest();
+
+    /**
+     * Stops monitoring for new data
+     *
+     * @since S60 3.2
+     * @return Symbian error code on error, KErrNone otherwise
+     */
+    TInt Stop();
+
+private:
+
+    CDunSignalWaiter( MDunChannelAllocator* aChannelCallback );
+
+    void ConstructL();
+
+    /**
+     * Initializes this class
+     *
+     * @since S60 3.2
+     * @return None
+     */
+    void Initialize();
+
+// from base class CActive
+
+    /**
+     * From CActive.
+     * Gets called when new data in RComm object
+     *
+     * @since S60 3.2
+     * @return None
+     */
+    void RunL();
+
+    /**
+     * From CActive.
+     * Gets called on cancel
+     *
+     * @since S60 3.2
+     * @return None
+     */
+    void DoCancel();
+
+private:  // data
+
+    /**
+     * Callback(s) to call when notification(s) via MDunConnMon to be made
+     * Normally contains only one callback
+     */
+    RPointerArray<MDunConnMon> iCallbacks;
+
+    /**
+     * Callback to call when notification via MDunChannelAllocator to be made
+     * Not own.
+     */
+    MDunChannelAllocator* iChannelCallback;
+
+    /**
+     * Current state of data monitoring: active or inactive
+     */
+    TDunState iSignalWaiterState;
+
+    /**
+     * Signals set when RComm::NotifySignalChange() request completes
+     */
+    TUint iSignals;
+
+    /**
+     * RComm object of local media side
+     * Not own.
+     */
+    RComm* iComm;
+
+    };
+
+#endif  // C_CDUNSIGNALWAITER_H