transmission/macosx/FileListNode.mm

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// This file Copyright © 2008-2022 Transmission authors and contributors.
// It may be used under the MIT (SPDX: MIT) license.
// License text can be found in the licenses/ folder.
@import AppKit;
#import "FileListNode.h"
@interface FileListNode ()
@property(nonatomic, readonly) NSMutableIndexSet* indexesInternal;
@property(nonatomic) NSImage* iconInternal;
- (instancetype)initWithFolder:(BOOL)isFolder name:(NSString*)name path:(NSString*)path torrent:(Torrent*)torrent;
@end
@implementation FileListNode
- (instancetype)initWithFolderName:(NSString*)name path:(NSString*)path torrent:(Torrent*)torrent
{
if ((self = [self initWithFolder:YES name:name path:path torrent:torrent]))
{
_children = [[NSMutableArray alloc] init];
_size = 0;
}
return self;
}
- (instancetype)initWithFileName:(NSString*)name
path:(NSString*)path
size:(uint64_t)size
index:(NSUInteger)index
torrent:(Torrent*)torrent
{
if ((self = [self initWithFolder:NO name:name path:path torrent:torrent]))
{
_size = size;
[_indexesInternal addIndex:index];
}
return self;
}
- (void)insertChild:(FileListNode*)child
{
NSAssert(_isFolder, @"method can only be invoked on folders");
[_children addObject:child];
}
- (void)insertIndex:(NSUInteger)index withSize:(uint64_t)size
{
NSAssert(_isFolder, @"method can only be invoked on folders");
[self.indexesInternal addIndex:index];
_size += size;
}
- (id)copyWithZone:(NSZone*)zone
{
//this object is essentially immutable after initial setup
return self;
}
- (NSString*)description
{
if (!_isFolder)
{
return [NSString stringWithFormat:@"%@ (%ld)", _name, _indexesInternal.firstIndex];
}
else
{
return [NSString stringWithFormat:@"%@ (folder: %@)", _name, _indexesInternal];
}
}
- (NSImage*)icon
{
if (!_iconInternal)
{
_iconInternal = [NSWorkspace.sharedWorkspace
iconForFileType:_isFolder ? NSFileTypeForHFSTypeCode(kGenericFolderIcon) : _name.pathExtension];
}
return _iconInternal;
}
- (NSIndexSet*)indexes
{
return _indexesInternal;
}
- (BOOL)updateFromOldName:(NSString*)oldName toNewName:(NSString*)newName inPath:(NSString*)path
{
NSParameterAssert(oldName != nil);
NSParameterAssert(newName != nil);
NSParameterAssert(path != nil);
NSArray* lookupPathComponents = path.pathComponents;
NSArray* thesePathComponents = self.path.pathComponents;
if ([lookupPathComponents isEqualToArray:thesePathComponents]) //this node represents what's being renamed
{
if ([oldName isEqualToString:self.name])
{
_name = [newName copy];
_iconInternal = nil;
return YES;
}
}
else if (lookupPathComponents.count < thesePathComponents.count) //what's being renamed is part of this node's path
{
lookupPathComponents = [lookupPathComponents arrayByAddingObject:oldName];
BOOL const allSame = NSNotFound ==
[lookupPathComponents indexOfObjectWithOptions:NSEnumerationConcurrent
passingTest:^BOOL(NSString* name, NSUInteger idx, BOOL* stop) {
return ![name isEqualToString:thesePathComponents[idx]];
}];
if (allSame)
{
NSString* oldPathPrefix = [path stringByAppendingPathComponent:oldName];
NSString* newPathPrefix = [path stringByAppendingPathComponent:newName];
_path = [_path stringByReplacingCharactersInRange:NSMakeRange(0, oldPathPrefix.length) withString:newPathPrefix];
return YES;
}
}
return NO;
}
#pragma mark - Private
- (instancetype)initWithFolder:(BOOL)isFolder name:(NSString*)name path:(NSString*)path torrent:(Torrent*)torrent
{
if ((self = [super init]))
{
_isFolder = isFolder;
_name = [name copy];
_path = [path copy];
_indexesInternal = [[NSMutableIndexSet alloc] init];
_torrent = torrent;
}
return self;
}
@end