nextcloud-desktop/shell_integration/MacOSX/OwnCloudFinder/IconCache.m

116 lines
2.2 KiB
Objective-C

/**
* Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License for more
* details.
*/
#import "IconCache.h"
@implementation IconCache
static IconCache* sharedInstance = nil;
- init
{
self = [super init];
if (self)
{
_iconIdDictionary = [[NSMutableDictionary alloc] init];
_iconPathDictionary = [[NSMutableDictionary alloc] init];
_currentIconId = 0;
}
return self;
}
- (void)dealloc
{
[_iconIdDictionary release];
[_iconPathDictionary release];
sharedInstance = nil;
[super dealloc];
}
+ (IconCache*)sharedInstance
{
@synchronized(self)
{
if (sharedInstance == nil)
{
sharedInstance = [[self alloc] init];
}
}
return sharedInstance;
}
- (NSImage*)getIcon:(NSNumber*)iconId
{
NSImage* image = [_iconIdDictionary objectForKey:iconId];
return image;
}
- (NSNumber*)registerIcon:(NSString*)path
{
if (path == nil)
{
return [NSNumber numberWithInt:-1];
}
NSImage* image = [[NSImage alloc]initWithContentsOfFile:path];
if (image == nil)
{
NSLog(@"%@ Could not load %@", NSStringFromSelector(_cmd), path);
return [NSNumber numberWithInt:-1];
}
NSNumber* iconId = [_iconPathDictionary objectForKey:path];
if (iconId == nil)
{
_currentIconId++;
iconId = [NSNumber numberWithInt:_currentIconId];
[_iconPathDictionary setObject:iconId forKey:path];
}
[_iconIdDictionary setObject:image forKey:iconId];
[image release];
return iconId;
}
- (void)unregisterIcon:(NSNumber*)iconId
{
NSString* path = @"";
for (NSString* key in _iconPathDictionary)
{
NSNumber* value = [_iconPathDictionary objectForKey:key];
if ([value isEqualToNumber:iconId])
{
path = key;
break;
}
}
[_iconPathDictionary removeObjectForKey:path];
[_iconIdDictionary removeObjectForKey:iconId];
}
@end