/*
    NSIndexPath.h
    mySTEP

    Created by Dr. H. Nikolaus Schaller on Tue Nov 22 2005.
    Copyright (c) 2005 DSITRI.

    H.N.Schaller, Dec 2005 - API revised to be compatible to 10.4

    Fabian Spillner, May 2008 - API revised to be compatible to 10.5
 
    This file is part of the mySTEP Library and is provided
    under the terms of the GNU Library General Public License.
*/

#ifndef mySTEP_NSIndexPath_H
#define mySTEP_NSIndexPath_H

#import "Foundation/Foundation.h"

@interface NSIndexPath : NSObject <NSCopying, NSCoding>
{
	NSIndexPath *_parent;			// parent object (not retained)
	// FIXME: should be a NSMapTable where children are stored with their index value
	NSMutableArray *_children;		// children
	unsigned _length;				// our depth level
	unsigned _index;				// our value
}

+ (NSIndexPath *) indexPathWithIndex:(NSUInteger) idx;
+ (NSIndexPath *) indexPathWithIndexes:(NSUInteger *) idx
								length:(NSUInteger) len;
- (NSComparisonResult) compare:(NSIndexPath *) obj;
- (void) getIndexes:(NSUInteger *) idx;
- (NSUInteger) indexAtPosition:(NSUInteger) pos;
- (NSIndexPath *) indexPathByAddingIndex:(NSUInteger) idx;
- (NSIndexPath *) indexPathByRemovingLastIndex;
- (id) initWithIndex:(NSUInteger) index;
- (id) initWithIndexes:(NSUInteger *) idx length:(NSUInteger) len;
- (NSUInteger) length;

@end

#endif // mySTEP_NSIndexPath_H