--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/messagingapp/msgnotifications/msgerrorwatcher/src/msgerrordiskspaceobserver.cpp	Tue Aug 31 18:53:38 2010 +0530
@@ -0,0 +1,173 @@
+/*
+* Copyright (c) 2010 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:  
+*     CMsgErrorDiskSpaceObserver implementation file
+*
+*/
+
+
+
+// INCLUDE FILES
+#include    <e32base.h>
+
+#include    "msgerrorwatcher_p.h"
+#include    "msgerrordiskspaceobserver.h"
+#include    "debugtraces.h"
+
+// ================= MEMBER FUNCTIONS =======================
+
+// ---------------------------------------------------------
+// CMsgErrorDiskSpaceObserver::CMsgErrorDiskSpaceObserver
+//
+// C++ constructor can NOT contain any code, that
+// might leave.
+// ---------------------------------------------------------
+//
+CMsgErrorDiskSpaceObserver::CMsgErrorDiskSpaceObserver( 
+    CMsgErrorWatcherPrivate& aWatcher, 
+        CMsvSession& aSession, 
+        RFs& aFs )
+    : CActive( CActive::EPriorityStandard ),
+    iWatcher( aWatcher ),
+    iSession( aSession ),
+    iFs( aFs ),
+    iLimit( 0 )
+    {
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:CMsgErrorDiskSpaceObserver : Enter");
+    CActiveScheduler::Add( this );
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:CMsgErrorDiskSpaceObserver : Exit");
+    }
+
+// ---------------------------------------------------------
+// CMsgErrorDiskSpaceObserver::NewL
+//
+// Two-phased constructor.
+// ---------------------------------------------------------
+//
+CMsgErrorDiskSpaceObserver* CMsgErrorDiskSpaceObserver::NewL( 
+    CMsgErrorWatcherPrivate& aWatcher, 
+        CMsvSession& aSession, 
+        RFs& aFs )
+    {
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:NewL : Enter");
+    CMsgErrorDiskSpaceObserver* self = new ( ELeave )
+        CMsgErrorDiskSpaceObserver( aWatcher, aSession, aFs );
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:NewL : Exit");
+    return self;
+    }
+
+    
+// ---------------------------------------------------------
+// CMsgErrorDiskSpaceObserver::~CMsgErrorDiskSpaceObserver
+//
+// Destructor
+// ---------------------------------------------------------
+//
+CMsgErrorDiskSpaceObserver::~CMsgErrorDiskSpaceObserver()
+    {
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:~CMsgErrorDiskSpaceObserver : Enter");
+    Cancel();
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:~CMsgErrorDiskSpaceObserver : Exit");
+    }
+
+
+// ---------------------------------------------------------
+// CMsgErrorDiskSpaceObserver::DoCancel
+//
+// From active object framework
+// ---------------------------------------------------------
+//
+void CMsgErrorDiskSpaceObserver::DoCancel()
+    {
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:DoCancel : Enter");
+    iFs.NotifyDiskSpaceCancel( iStatus );
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:DoCancel : Exit");
+    }
+
+// ---------------------------------------------------------
+// CMsgErrorDiskSpaceObserver::RunL
+//
+// From active object framework
+// ---------------------------------------------------------
+//
+void CMsgErrorDiskSpaceObserver::RunL()
+    {
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:RunL : Enter");
+    QDEBUG_WRITE_FORMAT("DiskSpace: RunL, iStatus: ", iStatus.Int() );
+    TInt status = iStatus.Int();
+    if ( status < 0 )
+        {
+        //Reset the observer.
+        TRAP_IGNORE ( SetLimitAndActivateL( iLimit ) );
+        return;
+        }
+    
+    //We shouldn't have to check whether we're above the limit,
+    //because we were below when we activated and the event comes
+    //when we cross the limit
+
+    TRAP_IGNORE( iWatcher.HandleDiskSpaceEventL() );
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:RunL : Exit");
+    }
+
+// ---------------------------------------------------------
+// CMsgErrorDiskSpaceObserver::SetLimitAndActivateL
+//
+// Sets the disk space trigger level for active object
+// and activates it.
+// ---------------------------------------------------------
+//
+void CMsgErrorDiskSpaceObserver::SetLimitAndActivateL( TInt32 aLimit )
+    {
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:SetLimitAndActivateL : Enter");
+    QDEBUG_WRITE_FORMAT("DiskSpace: aLimit ", aLimit );
+    __ASSERT_DEBUG( aLimit >= 0, User::Leave( KErrArgument ) );
+    if ( aLimit < 0 )
+        {
+        return;
+        }
+    if ( iLimit == 0 || iLimit > aLimit )
+        {
+        Cancel();
+        iLimit = aLimit;
+
+        TInt currentDrive = TInt( iSession.CurrentDriveL() );
+        TVolumeInfo volInfo;
+        User::LeaveIfError( iFs.Volume( volInfo, currentDrive ) );
+        QDEBUG_WRITE_FORMAT("DiskSpace: free/hi : ", I64HIGH( volInfo.iFree ) );
+        QDEBUG_WRITE_FORMAT("DiskSpace: free/lo : ", I64LOW( volInfo.iFree ) );
+        //check if we're already above the limit
+        if ( I64HIGH( volInfo.iFree ) != 0 ||
+            I64LOW( volInfo.iFree ) > (TUint)iLimit ) //iLimit is always positive.
+            {
+            iWatcher.HandleDiskSpaceEventL();
+            return;
+            }
+        else
+            {
+            QDEBUG_WRITE( "notify activated" );
+            TInt64 treshold = iLimit;
+            iFs.NotifyDiskSpace( treshold, currentDrive, iStatus );
+            // No need to check IsActive since object is cancelled 
+            // anyway above
+            SetActive();
+            }
+        }
+    QDEBUG_WRITE("CMsgErrorDiskSpaceObserver:SetLimitAndActivateL : Exit");
+    }
+
+// ================= OTHER EXPORTED FUNCTIONS ==============
+
+//  End of File  
+