// Copyright (c) 1997-2009 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 "Symbian Foundation License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// AppArc recognizer and application scanning

// 

//

#if !defined(__APSSCAN_H__)

#define __APSSCAN_H__

#if !defined(__F32FILE_H__)

#include <f32file.h>

#endif

class MApaFsChangeObserver

/** An interface for notifying a file system observer when

a change has been made to the file system.

This interface is intended for use only by CApaFsMonitor.

@internalComponent

*/

	{

public:

	virtual void FsChanged()=0;

	};

class CApaFsMonitor : public CBase, MApaFsChangeObserver

/** Monitors changes in the file system.

If a change is detected, the callback function supplied by the user of the class 

is called after a 0.25 second delay. If there are further changes, the callback 

is not called again until 3 seconds have elapsed. It uses RFs::NotifyChange() 

to request notifications.

@see RFs::NotifyChange()

@publishedPartner 

@released */

	{

public:

	IMPORT_C ~CApaFsMonitor();

	IMPORT_C static CApaFsMonitor* NewL(RFs& aFs, const TDesC& aLocation, TCallBack aCallBack);

	IMPORT_C void SetBlocked(TBool aIsBlocked);

	IMPORT_C void Start(TNotifyType aNotifyType);

	IMPORT_C TNotifyType NotifyType() const;

	IMPORT_C void AddLocationL(const TDesC& aLocation);

	IMPORT_C void Cancel();

	TBool AnyNotificationImpending() const;

private:

	CApaFsMonitor(RFs& aFs, TCallBack aCallBack);

	static TInt TimerCallBack(TAny* aObject);

	void DoStart();

	// from MApaFsChangeObserver

	void FsChanged();

	class CApaFsNotifier;

private:

	RFs& iFs;

	TNotifyType iNotifyType;

	TCallBack iCallBack;

	CPeriodic* iFsTimer;

	TBool iFsHasChanged;

	TBool iIsBlocked;

	RPointerArray<CApaFsNotifier> iNotifiers;

	};

#if !defined(__WINC__)

class REComSession;

/** 

CApaEComMonitor

A low priority (EPriorityIdle) active object which monitors changes 

in the Ecom plugin.

@see REComSession::NotifyOnChange()

@internalAll 

*/ 

class CApaEComMonitor : public CActive

	{

public:

	 ~CApaEComMonitor();

	 static CApaEComMonitor* NewL(TCallBack aCallBack);

	 void Start();

private:

	CApaEComMonitor(TCallBack aCallBack);

	void ConstructL ();

	static TInt TimerCallBack(TAny* aObject);

	void DoStart();

	void DoCancel();

	void RunL();

private:

	TCallBack iCallBack;

	CPeriodic* iEComTimer;

	REComSession* iEComSession;

	TBool iEComHasChanged;

	};

#endif

#endif