--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtinternetradio/irqsystemeventhandler/src/irdiskspaceobserver.cpp	Fri May 14 15:43:29 2010 +0300
@@ -0,0 +1,179 @@
+/*
+* Copyright (c) 2009 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:  Contains logic for watching certain disk's space
+*
+*/
+#include <pathinfo.h>
+#include "irdiskspaceobserver.h"
+#include "irdiskspaceobserverinterface.h"
+
+const TDriveNumber KQtIRDefaultDrive = EDriveC;
+
+const TUint KDriveAValue = 'A';
+const TUint KDriveZValue = 'Z';
+const TUint KDriveaValue = 'a';
+const TUint KDrivezValue = 'z';
+
+static TDriveNumber phoneMemRootDrive();
+
+// ---------------------------------------------------------------------------
+// Constructor
+// ---------------------------------------------------------------------------
+//
+CIRDiskSpaceObserver* CIRDiskSpaceObserver::NewL(MIRDiskSpaceObserverInterface* aObserver)
+{
+    CIRDiskSpaceObserver* self = new (ELeave) CIRDiskSpaceObserver(aObserver);
+
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+    return self;
+    
+}
+
+// ---------------------------------------------------------------------------
+// Second stage constructor
+// ---------------------------------------------------------------------------
+//
+void CIRDiskSpaceObserver::ConstructL()
+{
+    CActiveScheduler::Add(this);
+    User::LeaveIfError(iFs.Connect());
+}
+
+// ---------------------------------------------------------------------------
+// C++ Constructor
+// ---------------------------------------------------------------------------
+//
+CIRDiskSpaceObserver::CIRDiskSpaceObserver( MIRDiskSpaceObserverInterface* aObserver )
+                              : CActive( CActive::EPriorityStandard ),       
+                                iObserver( aObserver ),
+                                iCriticalLevel(0)
+{
+}
+            
+// ---------------------------------------------------------------------------
+// Destructor
+// ---------------------------------------------------------------------------
+//            
+CIRDiskSpaceObserver::~CIRDiskSpaceObserver()
+{
+    Cancel();
+    iFs.Close();    
+}
+
+// ---------------------------------------------------------------------------
+// Critical Level
+// ---------------------------------------------------------------------------
+//
+TInt64 CIRDiskSpaceObserver::CriticalLevel() const
+{
+    if(IsActive())
+    {
+        return iCriticalLevel;
+    }
+    else
+    {
+        return -1;
+    }    
+}
+
+// ---------------------------------------------------------------------------
+// Start Monitoring
+// ---------------------------------------------------------------------------
+//
+void CIRDiskSpaceObserver::Start(const TInt64 aCriticalLevel)
+{
+    Cancel();
+    iCriticalLevel = aCriticalLevel;
+    Run();
+}
+
+
+// ---------------------------------------------------------------------------
+// From class CActive. 
+// Cancels the pending request.
+// ---------------------------------------------------------------------------
+//
+void CIRDiskSpaceObserver::DoCancel() 
+{    
+    iFs.NotifyDiskSpaceCancel(iStatus);
+}
+
+
+// ---------------------------------------------------------------------------
+// From class CActive. 
+// Invoked when the observed disk's free disk space has run below
+// the supplied critical level.
+// Notifies the observer and regenerates the request to RFs' NotifyDiskSpace.
+// ---------------------------------------------------------------------------
+//
+void CIRDiskSpaceObserver::RunL()
+{       
+    Run();   
+}
+    
+
+// ---------------------------------------------------------------------------
+// Returns true if below the critical level in defined disk, otherwise false
+// ---------------------------------------------------------------------------
+//
+TBool CIRDiskSpaceObserver::IsBelowCriticalLevel(const TInt64 aCriticalLevel) const
+{
+    TVolumeInfo volInfo;
+    if(KErrNone == iFs.Volume(volInfo, KQtIRDefaultDrive))
+    {
+        if(volInfo.iFree < aCriticalLevel)
+        {
+            return ETrue;
+        }
+    }
+    
+    return EFalse;
+}
+
+void CIRDiskSpaceObserver::Run()
+{
+    if( iObserver && IsBelowCriticalLevel(iCriticalLevel))
+    {
+        iObserver->notifyLowDiskSpace((qint64)iCriticalLevel);
+    }
+        
+    iFs.NotifyDiskSpace(iCriticalLevel, phoneMemRootDrive(), iStatus);
+    SetActive(); 
+}
+
+TDriveNumber phoneMemRootDrive()
+{
+    TParsePtrC phoneMemoryRootPath( PathInfo::PhoneMemoryRootPath() );
+    TPtrC drive( phoneMemoryRootPath.Drive() );
+    TUint driveValue = drive[0];
+    TUint delta = 0;
+    if( driveValue >= KDriveAValue &&
+        driveValue <= KDriveZValue)
+    {
+        delta = driveValue - KDriveAValue;
+    }
+    else if( driveValue >= KDriveaValue &&
+            driveValue <= KDrivezValue)
+    {
+        delta = driveValue - KDriveaValue;
+    }
+    else
+    {
+        return KQtIRDefaultDrive;
+    }
+    
+    return static_cast<TDriveNumber>(EDriveA + delta);
+}