/* GrandPerspective, Version 3.7.1 
 *   A utility for macOS that graphically shows disk usage. 
 * Copyright (C) 2005-2025, 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 <Cocoa/Cocoa.h>

#import "TreeBuilder.h"

@class DirectoryItem;

/* Refreshes an existing tree by rescanning directories as needed based on their rescan flags.
 */
@interface TreeRefresher : TreeBuilder {
  DirectoryItem  *oldTree;
  BOOL  hardLinkMismatch;
}

// Overrides super's designated initialiser.
- (instancetype) initWithFilterSet:(FilterSet *)filterSet NS_UNAVAILABLE;

- (instancetype) initWithFilterSet:(FilterSet *)filterSet
                           oldTree:(DirectoryItem *)oldTree NS_DESIGNATED_INITIALIZER;

@end

@interface TreeRefresher (ProtectedMethods)

/* Constructs a tree for the given folder. It is used to implement buildTreeForPath:
 *
 * Overrides method in parent class to provide refresh implementation.
 */
- (BOOL) buildTreeForDirectory:(DirectoryItem *)dirItem atPath:(NSString *)path;

- (AlertMessage *)createAlertMessage:(DirectoryItem *)scanTree;

@end
