loggingservices/eventlogger/LogCli/src/LogClientObserver.cpp
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     1 // Copyright (c) 2002-2009 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 //
       
    15 
       
    16 #include "LogClientObserver.h"
       
    17 
       
    18 // System includes
       
    19 #include <s32mem.h>
       
    20 
       
    21 // User includes
       
    22 #include <logwrap.h>
       
    23 #include <logcli.h>
       
    24 #include "logservcli.h"
       
    25 #include <logclientchangeobserver.h>
       
    26 
       
    27 /////////////////////////////////////////////////////////////////////////////////////////
       
    28 // -----> CLogClientObserver (source)
       
    29 /////////////////////////////////////////////////////////////////////////////////////////
       
    30 
       
    31 CLogClientObserver::CLogClientObserver(CLogClient& aClient, MLogClientChangeObserver& aObserver, TInt aPriority)
       
    32 :	CActive(aPriority), iClient(aClient), iObserver(aObserver)
       
    33 	{
       
    34 	CActiveScheduler::Add(this);
       
    35 	}
       
    36 
       
    37 CLogClientObserver::~CLogClientObserver()
       
    38 	{
       
    39 	Cancel();
       
    40 	}
       
    41 
       
    42 CLogClientObserver* CLogClientObserver::NewL(CLogClient& aClient, MLogClientChangeObserver& aObserver, TInt aPriority)
       
    43 	{
       
    44 	CLogClientObserver* self = new(ELeave) CLogClientObserver(aClient, aObserver, aPriority);
       
    45 	self->RequestChanges();
       
    46 	return self;
       
    47 	}
       
    48 
       
    49 /////////////////////////////////////////////////////////////////////////////////////////
       
    50 /////////////////////////////////////////////////////////////////////////////////////////
       
    51 /////////////////////////////////////////////////////////////////////////////////////////
       
    52 
       
    53 void CLogClientObserver::RunL()
       
    54 	{
       
    55 	if	(iStatus.Int() == KErrNone)
       
    56 		NotifyObserverL();
       
    57 	RequestChanges();
       
    58 	}
       
    59 
       
    60 void CLogClientObserver::DoCancel()
       
    61 	{
       
    62 	RequestChangesCancel();
       
    63 	}
       
    64 
       
    65 TInt CLogClientObserver::RunError(TInt /*aError*/)
       
    66 	{
       
    67 	// Ignore any leave when notifying the client
       
    68 	return KErrNone;
       
    69 	}
       
    70 
       
    71 /////////////////////////////////////////////////////////////////////////////////////////
       
    72 /////////////////////////////////////////////////////////////////////////////////////////
       
    73 /////////////////////////////////////////////////////////////////////////////////////////
       
    74 
       
    75 void CLogClientObserver::RequestChanges()
       
    76 	{
       
    77 	__ASSERT_DEBUG(!IsActive(), User::Invariant());
       
    78 	iClient.Session().Send(ELogNotifyExtended, TIpcArgs(&iContextBuf,&iParamBuf1,&iParamBuf2,&iParamBuf3), iStatus);
       
    79 	SetActive();
       
    80 	}
       
    81 
       
    82 void CLogClientObserver::RequestChangesCancel()
       
    83 	{
       
    84 	iClient.Session().Send(ELogNotifyExtendedCancel, TIpcArgs());
       
    85 	}
       
    86 
       
    87 void CLogClientObserver::NotifyObserverL()
       
    88 	{
       
    89 	const TUid contextUid = { iContextBuf() };
       
    90 	const TInt param1 = iParamBuf1();
       
    91 	const TInt param2 = iParamBuf2();
       
    92 	const TInt param3 = iParamBuf3();
       
    93 	//
       
    94 	iObserver.HandleLogClientChangeEventL(contextUid, param1, param2, param3);
       
    95 	}