--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/installationservices/swi/source/daemon/drivewatcher.h Wed Sep 01 12:22:02 2010 +0100
@@ -0,0 +1,111 @@
+/*
+* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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:
+*
+*/
+
+
+/**
+ @file
+ @internalComponent
+ @released
+*/
+
+#ifndef __DRIVEWATCHER_H__
+#define __DRIVEWATCHER_H__
+
+#include <e32base.h>
+#include <f32file.h>
+
+namespace Swi
+{
+
+/**
+ * Observer interface called whenever a media change is detected.
+ */
+class MDriveObserver
+ {
+public:
+ /// Enumeration indicating whether a card was inserted or removed
+ enum TChangeType { EMediaInserted, EMediaRemoved };
+
+ /**
+ * This function is called to indicate a media change has occurred.
+ *
+ * @param aChangeType EInserted to indicate media has been inserted,
+ * or ERemoved to indicate media has been removed.
+ */
+ virtual void MediaChangeL(TInt aDrive, TChangeType aChangeType)=0;
+ };
+
+/**
+ * This active object waits for an indication that the media has changed,
+ * and then notifies its observer.
+ */
+class CDriveWatcher : public CActive
+ {
+public:
+ static CDriveWatcher* NewL(RFs& aFs, TInt aDrive, MDriveObserver& aObserver,TInt aPriority = EPriorityStandard);
+ static CDriveWatcher* NewLC(RFs& aFs, TInt aDrive, MDriveObserver& aObserver,TInt aPriority = EPriorityStandard);
+
+ ~CDriveWatcher();
+
+ TInt Drive() const;
+private:
+ CDriveWatcher(RFs& aFs, TInt aDrive, MDriveObserver& aObserver, TInt aPriority);
+
+ void ConstructL();
+
+// from CActive
+ void DoCancel();
+ void RunL();
+
+ /// Set up change notification.
+ void WaitForChangeL();
+
+ /**
+ * Notifies the observer of the appropriate media change depending on whether
+ * media is now present on the drive we're currently watching.
+ */
+ void NotifyMediaChange();
+
+ /**
+ * Determines if the media is present in the drive we are currently watching.
+ *
+ * @return ETrue if the media is present, EFalse otherwise.
+ */
+ TBool IsMediaPresentL();
+
+private:
+ /// Not owned by this class
+ RFs& iFs;
+
+ /// Drive number we are watching
+ TInt iDrive;
+
+ /// Observer to notify of changes
+ MDriveObserver& iObserver;
+ };
+
+// inline functions from CDriveWatcher
+
+inline TInt CDriveWatcher::Drive() const
+ {
+ return iDrive;
+ }
+
+} //namespace Swi
+
+#endif // #ifndef __DRIVEWATCHER_H__
+