DAPreferences.m

//
//  DAPreferences.m
//  DownAndOutª
//
//  Created by Fritz Anderson on Wed Aug 27 2003.
//  Copyright (c) 2003 Trustees of the University of Chicago. All rights reserved.
//  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., 675 Mass Ave, Cambridge, MA 02139, USA.
//

#import "DAPreferences.h"

#define PREFS_PATH  @"~/Library/Preferences/edu.uchicago.DownAndOut.plist"

@implementation DAPreferences

- (id) initWithDictionary: (NSDictionary *) initial forPath: (NSString *) fullPath
{
    path = [fullPath retain];
    prefs = [initial mutableCopy];
    dirty = NO;
    return self;
}

- (id) initWithPath: (NSString *) fullPath
{
    path = [fullPath retain];
    prefs = [[NSMutableDictionary dictionaryWithContentsOfFile: path] retain];
    dirty = NO;
    if (!prefs) {
        [self release];
        return nil;
    }
    return self;
}

- (id) initWithDefaults: (NSDictionary *) initial;
{
    id      retval = [self initWithPath: [PREFS_PATH stringByExpandingTildeInPath]];
    if (!retval)
        retval = [[DAPreferences alloc] initWithDictionary: initial forPath: [PREFS_PATH stringByExpandingTildeInPath]];
    return retval;
}

- (void) dealloc
{
    [path release];
    [prefs release];
    [super dealloc];
}

- (void) flushToFile
{
    if (dirty) {
        [prefs writeToFile: path atomically: YES];
        dirty = NO;
    }
}

- (int) integerForKey: (NSString *) aKey
{
    id      obj = [self objectForKey: aKey];
    return [obj intValue];
}

- (void) setInteger: (int) anInt forKey: (NSString *) aKey
{
    [self setObject: [NSNumber numberWithInt: anInt] forKey: aKey];
}

- (id) objectForKey: (NSString *) aKey
{
    return [prefs objectForKey: aKey];
}

- (void) setObject: (id) value forKey: (NSString *) aKey
{
    [prefs setObject: value forKey: aKey];
    dirty = YES;
}

- (BOOL) boolForKey: (NSString *) aKey
{
    id      obj = [self objectForKey: aKey];
    return [obj boolValue];
}

- (void) setBool: (BOOL) aBool forKey: (NSString *) aKey
{
    [self setObject: [NSNumber numberWithBool: aBool] forKey: aKey];
}

- (NSData *) dataForKey: (NSString *) aKey
{
    id      retval = [self objectForKey: aKey];
    return [retval isKindOfClass: [NSData class]]? retval: nil;
}

- (NSString *) stringForKey: (NSString *) aKey
{
    id      retval = [self objectForKey: aKey];
    return [retval isKindOfClass: [NSString class]]? retval: nil;
}

- (void) removeObjectForKey: (NSString *) aKey
{
    [prefs removeObjectForKey: aKey];
    dirty = YES;
}

@end

---