// command_constructors.h

// 

// Copyright (c) 2008 - 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_CONSTRUCTORS_H__

#define __COMMAND_CONSTRUCTORS_H__

#include <e32base.h>

#include <fshell/ioutils.h>

class MCommand;

namespace LtkUtils { class RLtkBuf16; }

using LtkUtils::RLtkBuf16;

class CCommandConstructorBase : public CBase

	{

public:

	enum TAttributes

		{

		EAttExternal   = 0x00000001,

		EAttNotInHelp  = 0x00000002,

		EAttAlias      = 0x00000004

		};

	enum TType

		{

		ETypeUnknown,

		ETypeThread,

		ETypeAlias,

		ETypeExe,

		ETypePips

		};

public:

	const TDesC& CommandName() const;

	TUint Attributes() const;

	TType Type() const;

	void SetAttributes(TUint aAttributes);

	virtual MCommand* ConstructCommandL() = 0;

	virtual void AppendDescriptionL(RLtkBuf16& aBuf) const = 0;

	virtual ~CCommandConstructorBase();

protected:

	CCommandConstructorBase();

	CCommandConstructorBase(TType aType);

	void BaseConstructL(const TDesC& aCommandName);

private:

	TType iType;

	TUint iAttributes;

	HBufC* iCommandName;

	};

typedef IoUtils::CCommandBase* (*TCommandConstructor)();

class CThreadCommandConstructor : public CCommandConstructorBase

	{

public:

	static CThreadCommandConstructor* NewLC(TCommandConstructor aConstructor, TUint aFlags);

	static CThreadCommandConstructor* NewLC(const TDesC& aCommandName, TCommandConstructor aConstructor, TUint aFlags);

private:

	CThreadCommandConstructor(TUint aFlags, TCommandConstructor aConstructor);

private: // From CCommandConstructorBase.

	virtual MCommand* ConstructCommandL();

	virtual void AppendDescriptionL(RLtkBuf16& aBuf) const;

private:

	TUint iFlags;

	TCommandConstructor iConstructor;

	};

class CExeCommandConstructor : public CCommandConstructorBase

	{

public:

	static CExeCommandConstructor* NewLC(const TDesC& aCommandName, const TDesC& aExeName);

	const TDesC& ExeName() const;

private:

	CExeCommandConstructor();

	~CExeCommandConstructor();

	void ConstructL(const TDesC& aCommandName, const TDesC& aExeName);

private: // From CCommandConstructorBase.

	virtual MCommand* ConstructCommandL();

	virtual void AppendDescriptionL(RLtkBuf16& aBuf) const;

private:

	HBufC* iExeName;

	};

class CPipsCommandConstructor : public CCommandConstructorBase

	{

public:

	static CPipsCommandConstructor* NewLC(const TDesC& aCommandName);

private:

	CPipsCommandConstructor();

private: // From CCommandConstructorBase.

	virtual MCommand* ConstructCommandL();

	virtual void AppendDescriptionL(RLtkBuf16& aBuf) const;

	};

class CAliasCommandConstructor : public CCommandConstructorBase

	{

public:

	static CAliasCommandConstructor* NewLC(const TDesC& aCommandName, CCommandConstructorBase* aAliasedConstructor, const TDesC* aAdditionalArguments, const TDesC* aReplacementArguments);

private:

	~CAliasCommandConstructor();

	CAliasCommandConstructor(CCommandConstructorBase* aAliasedConstructor);

	void ConstructL(const TDesC& aCommandName, const TDesC* aAdditionalArguments, const TDesC* aReplacementArguments);

private: // From CCommandConstructorBase.

	virtual MCommand* ConstructCommandL();

	virtual void AppendDescriptionL(RLtkBuf16& aBuf) const;

private:

	CCommandConstructorBase* iAliasedConstructor;

	HBufC* iAdditionalArguments;

	HBufC* iReplacementArguments;

	};

#endif // __COMMAND_CONSTRUCTORS_H__