react-native/Libraries/Settings/RCTSettingsManager.m

110 lines
2.5 KiB
Objective-C

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTSettingsManager.h"
#import <React/RCTBridge.h>
#import <React/RCTConvert.h>
#import <React/RCTEventDispatcher.h>
#import <React/RCTUtils.h>
@implementation RCTSettingsManager
{
BOOL _ignoringUpdates;
NSUserDefaults *_defaults;
}
@synthesize bridge = _bridge;
RCT_EXPORT_MODULE()
+ (BOOL)requiresMainQueueSetup
{
return NO;
}
- (instancetype)init
{
return [self initWithUserDefaults:[NSUserDefaults standardUserDefaults]];
}
- (instancetype)initWithUserDefaults:(NSUserDefaults *)defaults
{
if ((self = [super init])) {
_defaults = defaults;
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(userDefaultsDidChange:)
name:NSUserDefaultsDidChangeNotification
object:_defaults];
}
return self;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (NSDictionary<NSString *, id> *)constantsToExport
{
return @{@"settings": RCTJSONClean([_defaults dictionaryRepresentation])};
}
- (void)userDefaultsDidChange:(NSNotification *)note
{
if (_ignoringUpdates) {
return;
}
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
[_bridge.eventDispatcher
sendDeviceEventWithName:@"settingsUpdated"
body:RCTJSONClean([_defaults dictionaryRepresentation])];
#pragma clang diagnostic pop
}
/**
* Set one or more values in the settings.
* TODO: would it be useful to have a callback for when this has completed?
*/
RCT_EXPORT_METHOD(setValues:(NSDictionary *)values)
{
_ignoringUpdates = YES;
[values enumerateKeysAndObjectsUsingBlock:^(NSString *key, id json, BOOL *stop) {
id plist = [RCTConvert NSPropertyList:json];
if (plist) {
[self->_defaults setObject:plist forKey:key];
} else {
[self->_defaults removeObjectForKey:key];
}
}];
[_defaults synchronize];
_ignoringUpdates = NO;
}
/**
* Remove some values from the settings.
*/
RCT_EXPORT_METHOD(deleteValues:(NSArray<NSString *> *)keys)
{
_ignoringUpdates = YES;
for (NSString *key in keys) {
[_defaults removeObjectForKey:key];
}
[_defaults synchronize];
_ignoringUpdates = NO;
}
@end