1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // Definition of network request channel component.

    15 // 

    16 //

    17 

    18 /**

    19  @file

    20  @internalTechnology

    21  @released

    22 */

    23 

    24 #ifndef NETREQUESTCHANNEL_H_

    25 #define NETREQUESTCHANNEL_H_

    26 

    27 #include <e32hashtab.h>

    28 #include "lbsnrhngmsgs.h"

    29 #include "lbsnetinternalapi.h"

    30 #include "requestmessagebuffer.h"

    31 

    32 

    33 class CNetworkRequestMessageBuffer;

    34 

    35 //

    36 // Network Request Handler Channel

    37 //

    38 

    39 /** Observer for Network Request Handler interface

    40 */

    41 class MNetworkRequestObserver

    42 	{

    43 public:

    44 	virtual void ProcessNetRequestMessage(const TLbsNetInternalMsgBase& aMessage) = 0;

    45 	};

    46 

    47 /** Manager for the Network Request Handler interface.

    48 

    49 This class handles sending and receiving messages on the

    50 Network Request Handler interface. It is implemented as an active object

    51 to allow it to asnychronously wait for messages to arrive. Sending

    52 is synchronous.

    53 */

    54 class CNetworkRequestChannel : public CActive, 

    55 							   public MLbsNetChannelObserver

    56 	{

    57 public:

    58 	static CNetworkRequestChannel* NewL(MNetworkRequestObserver& aObserver);

    59 	~CNetworkRequestChannel();

    60 	

    61 	// from CActive

    62 	void RunL();

    63 	void DoCancel();

    64 	TInt RunError(TInt aError);

    65 	

    66 	// Send a message to the NRH.

    67 	void SendNetRequestMessage(const TLbsNetInternalMsgBase& aMessage);

    68 	

    69 	// from MLbsNetChannelObserver : process an incoming message from the NRH

    70 	void ProcessNetChannelMessage(RLbsNetChannel::TLbsNetChannelId aChannelId, const TLbsNetInternalMsgBase& aMessage);

    71 	

    72 private:

    73 	CNetworkRequestChannel(MNetworkRequestObserver& aObserver);

    74 	void ConstructL();

    75 	

    76 	void SendMessageAndNotifyForResponse(const TLbsNetInternalMsgBase& aMessage);

    77 	void SendNextBufferedMessage();

    78 	void RemoveEmergencyMessage(const TLbsNetInternalMsgBase* aMessage);

    79 	

    80 private:

    81 	MNetworkRequestObserver& iObserver;

    82 	RLbsNetChannel iNetRequestChannel;

    83 	CRequestMessageBuffer* iMsgBuffer;

    84 	

    85 	RPointerArray<TLbsNetInternalMsgBase> iEmergencyBuffer; // Buffer used for emergancy requests OOM safe.

    86 	TLbsNetLocationRequestMsg iEmergencyLocationRequestMsg;

    87 	TLbsNetMtLrRequestMsg iEmergencyPrivacyRequestMsg;

    88 	};

    89 

    90 

    91 

    92 #endif // NETREQUESTCHANNEL_H_