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/*
* CPUserDefaultsController.j
* AppKit
*
* Portions based on NSUserDefaultsController.m (2009-06-04) in Cocotron (http://www.cocotron.org/)
* Copyright (c) 2006-2007 Christopher J. W. Lloyd
*
* Created by Alexander Ljungberg.
* Copyright 2011, WireLoad Inc.
*
* 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@import <Foundation/CPString.j>
@import <AppKit/CPController.j>
var SharedUserDefaultsController = nil;
@implementation CPUserDefaultsController : CPController
{
CPUserDefaults _defaults @accessors(readonly, property=defaults);
CPDictionary _initialValues @accessors(property=initialValues);
BOOL _appliesImmediately @accessors(property=appliesImmediately);
}
+ (id)sharedUserDefaultsController
{
if (!SharedUserDefaultsController)
SharedUserDefaultsController = [[CPUserDefaultsController alloc] initWithDefaults:nil initialValues:nil];
return SharedUserDefaultsController;
}
- (id)initWithDefaults:(CPUserDefaults)someDefaults initialValues:(CPDictionary)initialValues
{
if (self = [super init])
{
if (!someDefaults)
someDefaults = [CPUserDefaults standardUserDefaults];
_defaults = someDefaults;
_initialValues = [initialValues copy];
_appliesImmediately = YES;
_valueProxy = [[_CPUserDefaultsControllerProxy alloc] initWithController:self];
}
return self;
}
- (id)values
{
return _valueProxy;
}
- (BOOL)hasUnappliedChanges
{
return [_valueProxy hasUnappliedChanges];
}
- (void)save:(id)sender
{
[_valueProxy save];
}
- (void)revert:(id)sender
{
[_valueProxy revert];
}
- (void)revertToInitialValues:(id)sender
{
[_valueProxy revertToInitialValues];
}
@end
var CPUserDefaultsControllerSharedKey = "CPUserDefaultsControllerSharedKey";
@implementation CPUserDefaultsController (CPCoding)
- (id)initWithCoder:(CPCoder)aCoder
{
if ([aCoder decodeBoolForKey:CPUserDefaultsControllerSharedKey])
return [CPUserDefaultsController sharedUserDefaultsController];
self = [super initWithCoder:aCoder];
if (self)
{
[CPException raise:CPUnsupportedMethodException reason:@"decoding of non-shared CPUserDefaultsController not implemented"];
}
return self;
}
- (void)encodeWithCoder:(CPCoder)aCoder
{
[super encodeWithCoder:aCoder];
if (self === SharedUserDefaultsController)
{
[aCoder encodeBool:YES forKey:CPUserDefaultsControllerSharedKey];
return;
}
[CPException raise:CPUnsupportedMethodException reason:@"encoding of non-shared CPUserDefaultsController not implemented"];
}
@end
@implementation _CPUserDefaultsControllerProxy : CPObject
{
CPUserDefaultsController _controller;
// TODO Could be optimised with a JS dict.
CPMutableDictionary _cachedValues;
}
- (id)initWithController:(CPUserDefaultsController)aController
{
if (self = [super init])
{
_controller = aController;
_cachedValues = [CPMutableDictionary dictionary];
[[CPNotificationCenter defaultCenter] addObserver:self selector:@selector(userDefaultsDidChange:) name:CPUserDefaultsDidChangeNotification object:[_controller defaults]];
}
return self;
}
- (void)dealloc
{
// FIXME No dealloc in Cappuccino.
[[CPNotificationCenter defaultCenter] removeObserver:self];
[super dealloc];
}
- (id)valueForKey:(CPString)aKey
{
var value = [_cachedValues objectForKey:aKey];
if (value === nil)
{
value = [[_controller defaults] objectForKey:aKey];
if (value === nil)
value = [[_controller initialValues] objectForKey:aKey];
if (value !== nil)
[_cachedValues setObject:value forKey:aKey];
}
return value;
}
- (void)setValue:(id)aValue forKey:(CPString)aKey
{
[self willChangeValueForKey:aKey];
[_cachedValues setObject:aValue forKey:aKey];
if ([_controller appliesImmediately])
[[_controller defaults] setObject:aValue forKey:aKey];
[self didChangeValueForKey:aKey];
}
- (void)revert
{
var keys = [_cachedValues allKeys],
keysCount = [keys count];
while (keysCount--)
{
var key = keys[keysCount];
[self willChangeValueForKey:key];
[_cachedValues removeObjectForKey:key];
[self didChangeValueForKey:key];
}
}
- (void)save
{
var keys = [_cachedValues allKeys],
keysCount = [keys count];
while (keysCount--)
{
var key = keys[keysCount];
[[_controller defaults] setObject:[_cachedValues objectForKey:key] forKey:key];
}
}
- (void)revertToInitialValues
{
var initial = [_controller initialValues],
keys = [_cachedValues allKeys],
keysCount = [keys count];
while (keysCount--)
{
var key = keys[keysCount];
[self willChangeValueForKey:key];
var initialValue = [initial objectForKey:key];
if (initialValue !== nil)
[_cachedValues setObject:initialValue forKey:key];
else
[_cachedValues removeObjectForKey:key];
[self didChangeValueForKey:key];
}
}
- (void)userDefaultsDidChange:(CPNotification)aNotification
{
var defaults = [_controller defaults],
keys = [_cachedValues allKeys],
keysCount = [keys count];
while (keysCount--)
{
var key = keys[keysCount],
value = [_cachedValues objectForKey:key],
newValue = [defaults objectForKey:key];
if (![value isEqual:newValue])
{
[self willChangeValueForKey:key];
[_cachedValues setObject:newValue forKey:key];
[self didChangeValueForKey:key];
}
}
}
- (BOOL)hasUnappliedChanges
{
var defaults = [_controller defaults],
keys = [_cachedValues allKeys],
keysCount = [keys count];
while (keysCount--)
{
var key = keys[keysCount],
value = [_cachedValues objectForKey:key],
newValue = [defaults objectForKey:key];
if (![value isEqual:newValue])
return YES;
}
return NO;
}
@end
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