1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/persistentdata/loggingservices/eventlogger/LogCli/src/LogViewObserver.cpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,166 @@
1.4 +// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +//
1.18 +
1.19 +#include "LogViewObserver.h"
1.20 +
1.21 +// System includes
1.22 +#include <s32mem.h>
1.23 +
1.24 +// User includes
1.25 +#include <logwrap.h>
1.26 +#include <logcli.h>
1.27 +#include "logclipanic.h"
1.28 +#include "logservcli.h"
1.29 +#include "LogChangeDefinition.h"
1.30 +#include "LogViewChangeObserverInternal.h"
1.31 +
1.32 +/////////////////////////////////////////////////////////////////////////////////////////
1.33 +// -----> CLogViewObserver (source)
1.34 +/////////////////////////////////////////////////////////////////////////////////////////
1.35 +CLogViewObserver::CLogViewObserver(CLogView& aView, CLogClient& aClient, MLogViewChangeObserverInternal& aObserver, TLogViewId aViewId, TInt aPriority)
1.36 +: CActive(aPriority), iClient(aClient), iObserver(aObserver), iViewId(aViewId), iView(aView)
1.37 + {
1.38 + CActiveScheduler::Add(this);
1.39 + }
1.40 +
1.41 +CLogViewObserver::~CLogViewObserver()
1.42 + {
1.43 + Cancel();
1.44 + //
1.45 + delete iChanges;
1.46 + }
1.47 +
1.48 +void CLogViewObserver::ConstructL()
1.49 + {
1.50 + iChanges = CLogChangeDefinition::NewL();
1.51 + RequestChanges();
1.52 + }
1.53 +
1.54 +CLogViewObserver* CLogViewObserver::NewL(CLogView& aView, CLogClient& aClient, MLogViewChangeObserverInternal& aObserver, TLogViewId aViewId, TInt aPriority)
1.55 + {
1.56 + CLogViewObserver* self = new(ELeave) CLogViewObserver(aView, aClient, aObserver, aViewId, aPriority);
1.57 + CleanupStack::PushL(self);
1.58 + self->ConstructL();
1.59 + CleanupStack::Pop(self);
1.60 + return self;
1.61 + }
1.62 +
1.63 +void CLogViewObserver::RequestChanges()
1.64 + {
1.65 + iClient.Session().Send(ELogViewChangeNotificationsRequest, TIpcArgs(iViewId), iStatus);
1.66 + SetActive();
1.67 + }
1.68 +
1.69 +void CLogViewObserver::RunL()
1.70 + {
1.71 + const TInt error = iStatus.Int();
1.72 + if (error == KErrServerTerminated)
1.73 + {
1.74 + // Effectively does a "delete this"
1.75 + iView.NotifyLogServerTerminatedL();
1.76 + }
1.77 + else if (error < KErrNone)
1.78 + {
1.79 + // Don't request any further changes.
1.80 + }
1.81 + else
1.82 + {
1.83 + const TInt changesSize = iStatus.Int();
1.84 + User::LeaveIfError(changesSize);
1.85 + FetchChangesL(changesSize);
1.86 + RequestChanges();
1.87 + NotifyObserverL();
1.88 + }
1.89 + }
1.90 +
1.91 +TInt CLogViewObserver::RunError(TInt /*aError*/)
1.92 + {
1.93 +
1.94 + // This point can be reached when RequestChanges has already been
1.95 + // called, for example when an observer leaves when it is notified of
1.96 + // a change.
1.97 + // Check IsActive() before calling RequestChanges to avoid calling it
1.98 + // twice in a row and causing a E32USER-CBase:42 panic.
1.99 +
1.100 + if (!IsActive())
1.101 + {
1.102 + RequestChanges();
1.103 + }
1.104 +
1.105 + return KErrNone;
1.106 + }
1.107 +
1.108 +void CLogViewObserver::DoCancel()
1.109 + {
1.110 + RequestChangesCancel();
1.111 + }
1.112 +
1.113 +void CLogViewObserver::RequestChangesCancel()
1.114 + {
1.115 + iClient.Session().Send(ELogViewChangeNotificationsCancel, TIpcArgs(iViewId));
1.116 + }
1.117 +
1.118 +void CLogViewObserver::FetchChangesL(TInt aBufferSizeRequired)
1.119 + {
1.120 + HBufC8* buffer = HBufC8::NewLC(aBufferSizeRequired);
1.121 + TPtr8 pBuffer(buffer->Des());
1.122 + //
1.123 + User::LeaveIfError(iClient.Session().Send(ELogViewFetchChanges, TIpcArgs(iViewId,aBufferSizeRequired,&pBuffer)));
1.124 + //
1.125 + iChanges->Reset();
1.126 + RDesReadStream stream(*buffer);
1.127 + stream >> *iChanges;
1.128 + CleanupStack::PopAndDestroy(buffer);
1.129 + }
1.130 +
1.131 +void CLogViewObserver::NotifyObserverL()
1.132 + {
1.133 + TLogId id;
1.134 + TInt viewIndex;
1.135 +
1.136 + // Copy the changes
1.137 + const TInt count = iChanges->Count();
1.138 + if (!count)
1.139 + return;
1.140 + //
1.141 + CLogChangeDefinition* changes = CLogChangeDefinition::NewL(*iChanges);
1.142 + CleanupStack::PushL(changes);
1.143 + iChanges->Reset();
1.144 + //
1.145 + for(TInt i=0; i<count; i++)
1.146 + {
1.147 + const TLogDatabaseChangeType type = changes->At(i, id, viewIndex);
1.148 + //
1.149 + switch(type)
1.150 + {
1.151 + case ELogChangeTypeEventAdded:
1.152 + iObserver.HandleLogViewChangeEventAddedL(id, viewIndex, i, count);
1.153 + break;
1.154 + case ELogChangeTypeEventChanged:
1.155 + iObserver.HandleLogViewChangeEventChangedL(id, viewIndex, i, count);
1.156 + break;
1.157 + case ELogChangeTypeEventDeleted:
1.158 + iObserver.HandleLogViewChangeEventDeletedL(id, viewIndex, i, count);
1.159 + break;
1.160 + case ELogChangeTypeLogCleared:
1.161 + iObserver.HandleLogViewChangeEventLogClearedL();
1.162 + break;
1.163 + default:
1.164 + case ELogChangeTypeUndefined:
1.165 + __ASSERT_DEBUG(EFalse, Panic(ELogUnexpectedChangeType));
1.166 + }
1.167 + }
1.168 + CleanupStack::PopAndDestroy(changes);
1.169 + }