// command_factory.h

// 

// Copyright (c) 2006 - 2010 Accenture. All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the "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:

// Accenture - Initial contribution

//

#ifndef __COMMAND_FACTORY_H__

#define __COMMAND_FACTORY_H__

#include <e32base.h>

#include "command_wrappers.h"

class CCommandConstructorBase;

class CThreadPool;

#include "error.h"

class RFs;

class MCommand;

class CCommandSet;

class CCommandFactory : public CActive

	{

public:

	static CCommandFactory* NewL(RFs& aFs);

	~CCommandFactory();

	MCommand* CreateCommandL(const TDesC& aCommandName, TError& aErrorContext, const TDesC& aArguments);

	void ListCommandsL(RArray<TPtrC>& aList);

	TInt CountUniqueCommandsL();

	void GetCommandInfoL(const TDesC& aCommand, RLtkBuf16& aDescriptionBuf);

private:

	CCommandFactory(RFs& aFs);

	void ConstructL();

	void WatchFileSystem();

	void AddCommandL(CCommandConstructorBase* aCommandConstructor);

	void AddThreadCommandL(TCommandConstructor aConstructor, TUint aFlags = 0);

	void AddThreadCommandL(const TDesC& aCommandName, TCommandConstructor aConstructor, TUint aAttributes, TUint aFlags = 0);

	void AddAliasCommandL(const TDesC& aAliasName, TCommandConstructor aConstructor, const TDesC* aAdditionalArguments, const TDesC* aReplacementArguments, TUint aAttributes, TUint aFlags = 0);

	void CheckExternalCommands();

	void FindExternalCommandsL();

	void AppendExternalCommandsL(const TUidType& aUidType, const TDesC& aExtension);

	void WaitLC() const;

	TInt FindCommandL(const TDesC& aCommandName);

	MCommand* DoCreateCommandL(const TDesC& aCommandName, const TDesC& aArguments, RProcess& aProcess);

	static void Signal(TAny* aSelf);

private: // From CActive.

	virtual void RunL();

	virtual void DoCancel();

	virtual TInt RunError(TInt aError);

private:

	RFs& iFs;

	mutable RMutex iLock;

	RPointerArray<CCommandConstructorBase> iCommands;

	TDriveList iDriveList;

	TBool iFileSystemScanned;

	TBool iFailedToScanFileSystem;

	TThreadId iFactoryThreadId; // The one the CCommandFactory active object lives in

	RAllocator* iFactoryAllocator;

	CThreadPool* iThreadPool;

	};

#endif // __COMMAND_FACTORY_H__