////////////////////////////////////////////////////////////////////////////
//
//  Crytek Engine Source File.
//  Copyright (C), Crytek Studios, 2001-2004.
// -------------------------------------------------------------------------
//  File name:   IDataBaseLibrary.h
//  Version:     v1.00
//  Created:     30/4/2004 by Timur.
//  Compilers:   Visual Studio.NET 2003
//  Description: 
// -------------------------------------------------------------------------
//  History:
//
////////////////////////////////////////////////////////////////////////////

#ifndef __IDataBaseLibrary_h__
#define __IDataBaseLibrary_h__
#pragma once


struct IDataBaseManager;
struct IDataBaseItem;

//////////////////////////////////////////////////////////////////////////
// Description:
//		Interface to access specific library of editor data base.
//		Ex. Archetype library, Material Library.
// See Also:
//     IDataBaseItem,IDataBaseManager
//////////////////////////////////////////////////////////////////////////
struct IDataBaseLibrary
{
	// Description:
	//		Return IDataBaseManager interface to the manager for items stored in this library.
	virtual IDataBaseManager* GetManager() = 0;

	// Description:
	//		Return library name.
	virtual const CString& GetName() const = 0;

	// Description:
	//		Return filename where this library is stored.
	virtual const CString& GetFilename() const = 0;

	// Description:
	//		Save contents of library to file.
	virtual bool Save() = 0;
	
	// Description:
	//		Load library from file.
	// Arguments:
	//		filename - Full specified library filename (relative to root game folder).
	virtual bool Load( const CString &filename ) = 0;
	
	// Description:
	//		Serialize library parameters and items to/from XML node.
	virtual void Serialize( XmlNodeRef &node,bool bLoading ) = 0;

	// Description:
	//		Marks library as modified, indicates that some item in library was modified.
	virtual void SetModified( bool bModified=true ) = 0;
	
	// Description:
	//		Check if library parameters or any items where modified.
	//		If any item was modified library may need saving before closing editor.
	virtual bool IsModified() const = 0;

	// Description:
	//		Check if this library is not shared and internal to current level.
	virtual bool IsLevelLibrary() const = 0;

	// Description:
	//		Make this library accessible only from current Level. (not shared)
	virtual void SetLevelLibrary( bool bEnable ) = 0;

	// Description:
	//		Associate a new item with the library.
	//		Watch out if item was already in another library.
	virtual void AddItem( IDataBaseItem* pItem ) = 0;
	
	// Description:
	//		Return number of items in library.
	virtual int GetItemCount() const = 0;
	
	// Description:
	//		Get item by index. 
	// See Also:
	//    GetItemCount
	// Arguments:
	//		index - Index from 0 to GetItemCount()
	virtual IDataBaseItem* GetItem( int index ) = 0;

	// Description:
	//		Remove item from library, does not destroy item, 
	//		only unliks it from this library, to delete item use IDataBaseManager.
	// See Also:
	//     AddItem
	virtual void RemoveItem( IDataBaseItem* item ) = 0;
	
	// Description:
	//		Remove all items from library, does not destroy items, 
	//		only unliks them from this library, to delete item use IDataBaseManager.
	// See Also:
	//		RemoveItem,AddItem
	virtual void RemoveAllItems() = 0;

	// Description:
	//		Find item in library by name.
	//		This function usually uses linear search so it is not particularry fast.
	// See Also:
	//		GetItem
	virtual IDataBaseItem* FindItem( const CString &name ) = 0;
};

#endif // __IDataBaseLibrary_h__