diff -r 9f5ae1728557 -r db3f5fa34ec7 messagingfw/biomsgfw/BDBINC/bifchangeobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/messagingfw/biomsgfw/BDBINC/bifchangeobserver.h	Wed Nov 03 22:41:46 2010 +0530
@@ -0,0 +1,103 @@
+// 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: bifchangeobserver.h
+// 
+// Author	
+// Date		 
+//
+/**
+ * @file 
+ * Callback interface implementation for BIF files changes.
+ *
+ * @publishedPartner
+ * @released
+ */
+
+#ifndef __BIFCHANGEOBSERVER_H__
+#define __BIFCHANGEOBSERVER_H__
+
+class CBIODatabase;
+
+/** Callback interface implemented by classes to receive notifications of BIF files 
+changes from CBifChangeObserver. 
+
+@publishedPartner
+@released
+*/
+class MBifChangeObserver 
+	{
+public:
+	/** BIF change events. */
+	enum TBifChangeEvent
+		{
+		/** Unknown change. */
+		EBifChangeUnknown = 0,
+		/** BIF added. */
+		EBifAdded,
+		/** BIF deleted. */
+		EBifDeleted,
+		/** BIF changed. */
+		EBifChanged
+		};
+
+public: 
+	/** Called when a BIF change occurs.
+	
+	@param aEvent Change event type
+	@param aBioID BIO message type of changed BIF */
+	virtual void HandleBifChangeL(TBifChangeEvent aEvent, TUid aBioID)=0;
+	};
+
+/** Active object that watches for changes made to the installed BIF files. 
+
+@publishedPartner
+@released
+*/
+class CBifChangeObserver : public CActive
+	{
+public: 
+	IMPORT_C static CBifChangeObserver* NewL(MBifChangeObserver& aObserver, RFs& aFs);
+	IMPORT_C void Start();
+	~CBifChangeObserver();
+	
+	static void CleanupBifArray(TAny* aBifArray);
+
+private:
+	// from CActive
+	virtual void RunL();
+	virtual void DoCancel();
+
+private:
+	CBifChangeObserver(MBifChangeObserver& aObserver, RFs& aFs);
+	void ConstructL();
+	
+	void NotifyObserverL();
+	void WaitForFileNotification();
+	void DoRunL();
+	void CopyEntriesL(const CDir& aDir, CArrayFixFlat<TEntry>& aEntries);
+	TBool CompareReaders(const CBioInfoFileReader& aReader1, const CBioInfoFileReader& aReader2) const;
+	
+	TInt FindEntry(const CBifEntry& aBifEntry, const RPointerArray<CBifEntry>& aEntries, TInt& aIndex) const;
+	
+private:
+	MBifChangeObserver&	iChangeObserver;
+	RFs&			iFs;
+
+	RPointerArray<CBifEntry> iEntries;
+
+	CBIODatabase*	iBioDB;
+	RTimer	iTimer;
+	TInt iRetryCount;
+	};
+
+#endif // __BIFCHANGEOBSERVER_H__