/* GrandPerspective, Version 2.6.2 
 *   A utility for Mac OS X that graphically shows disk usage. 
 * Copyright (C) 2005-2022, Erwin Bonsma 
 * 
 * This program is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU General Public License as published by the Free 
 * Software Foundation; either version 2 of the License, or (at your option) 
 * any later version. 
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT 
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
 * more details. 
 * 
 * You should have received a copy of the GNU General Public License along 
 * with this program; if not, write to the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA. 
 */

#import "StatefulFileItemMapping.h"


@implementation StatefulFileItemMapping

// Overrides designated initialiser
- (instancetype) init {
  NSAssert(NO, @"Use initWithFileItemMappingScheme: instead.");
  return [self initWithFileItemMappingScheme: nil];
}


- (instancetype) initWithFileItemMappingScheme:(NSObject <FileItemMappingScheme> *)scheme {
  if (self = [super init]) {
    _scheme = [scheme retain];
  } 
  
  return self;
}

- (void) dealloc {
  [_scheme release];

  [super dealloc];
}


- (NSObject <FileItemMappingScheme> *)fileItemMappingScheme {
  return _scheme;
}


- (NSUInteger) hashForFileItem:(PlainFileItem *)item atDepth:(NSUInteger)depth {
  return 0;
}

- (NSUInteger) hashForFileItem:(PlainFileItem *)item inTree:(FileItem *)treeRoot {
  // By default assuming that "depth" is not used in the hash calculation.
  // If it is, this method needs to be overridden.
  return [self hashForFileItem: item atDepth: 0];
}


- (BOOL) canProvideLegend {
  return NO;
}

@end
