A private messenger for iOS.
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//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//
#import "AppReadiness.h"
#import "AppContext.h"
#import <SignalCoreKit/SignalCoreKit.h>
#import <SignalCoreKit/Threading.h>
NS_ASSUME_NONNULL_BEGIN
@interface AppReadiness ()
@property (atomic) BOOL isAppReady;
@property (nonatomic) NSMutableArray<AppReadyBlock> *appWillBecomeReadyBlocks;
@property (nonatomic) NSMutableArray<AppReadyBlock> *appDidBecomeReadyBlocks;
@end
#pragma mark -
@implementation AppReadiness
+ (instancetype)sharedManager
{
static AppReadiness *sharedMyManager = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedMyManager = [[self alloc] initDefault];
});
return sharedMyManager;
}
- (instancetype)initDefault
{
self = [super init];
if (!self) {
return self;
}
self.appWillBecomeReadyBlocks = [NSMutableArray new];
self.appDidBecomeReadyBlocks = [NSMutableArray new];
return self;
}
+ (BOOL)isAppReady
{
return [self.sharedManager isAppReady];
}
+ (void)runNowOrWhenAppWillBecomeReady:(AppReadyBlock)block
{
DispatchMainThreadSafe(^{
[self.sharedManager runNowOrWhenAppWillBecomeReady:block];
});
}
- (void)runNowOrWhenAppWillBecomeReady:(AppReadyBlock)block
{
if (CurrentAppContext().isRunningTests) {
// We don't need to do any "on app ready" work in the tests.
return;
}
if (self.isAppReady) {
block();
return;
}
[self.appWillBecomeReadyBlocks addObject:block];
}
+ (void)runNowOrWhenAppDidBecomeReadySync:(AppReadyBlock)block
{
DispatchSyncMainThreadSafe(^{
[self.sharedManager runNowOrWhenAppDidBecomeReady:block];
});
}
+ (void)runNowOrWhenAppDidBecomeReady:(AppReadyBlock)block
{
DispatchMainThreadSafe(^{
[self.sharedManager runNowOrWhenAppDidBecomeReady:block];
});
}
- (void)runNowOrWhenAppDidBecomeReady:(AppReadyBlock)block
{
if (CurrentAppContext().isRunningTests) {
// We don't need to do any "on app ready" work in the tests.
return;
}
if (self.isAppReady) {
block();
return;
}
[self.appDidBecomeReadyBlocks addObject:block];
}
+ (void)setAppIsReady
{
[self.sharedManager setAppIsReady];
}
- (void)setAppIsReady
{
self.isAppReady = YES;
[self runAppReadyBlocks];
}
- (void)runAppReadyBlocks
{
NSArray<AppReadyBlock> *appWillBecomeReadyBlocks = [self.appWillBecomeReadyBlocks copy];
[self.appWillBecomeReadyBlocks removeAllObjects];
NSArray<AppReadyBlock> *appDidBecomeReadyBlocks = [self.appDidBecomeReadyBlocks copy];
[self.appDidBecomeReadyBlocks removeAllObjects];
// We invoke the _will become_ blocks before the _did become_ blocks.
for (AppReadyBlock block in appWillBecomeReadyBlocks) {
block();
}
for (AppReadyBlock block in appDidBecomeReadyBlocks) {
block();
}
}
@end
NS_ASSUME_NONNULL_END