react-native/React/Modules/RCTStatusBarManager.m

/**
 * 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 "RCTStatusBarManager.h"

#import "RCTEventDispatcher.h"
#import "RCTLog.h"
#import "RCTUtils.h"

@implementation RCTConvert (UIStatusBar)

RCT_ENUM_CONVERTER(UIStatusBarStyle, (@{
  @"default": @(UIStatusBarStyleDefault),
  @"light-content": @(UIStatusBarStyleLightContent),
}), UIStatusBarStyleDefault, integerValue);

RCT_ENUM_CONVERTER(UIStatusBarAnimation, (@{
  @"none": @(UIStatusBarAnimationNone),
  @"fade": @(UIStatusBarAnimationFade),
  @"slide": @(UIStatusBarAnimationSlide),
}), UIStatusBarAnimationNone, integerValue);

@end

@implementation RCTStatusBarManager

static BOOL RCTViewControllerBasedStatusBarAppearance()
{
  static BOOL value;
  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{
    value = [[[NSBundle mainBundle] objectForInfoDictionaryKey:
              @"UIViewControllerBasedStatusBarAppearance"] ?: @YES boolValue];
  });

  return value;
}

RCT_EXPORT_MODULE()

@synthesize bridge = _bridge;

- (instancetype)init
{
  // We're only overriding this to ensure the module gets created at startup
  // TODO (t11106126): Remove once we have more declarative control over module setup.
  return [super init];
}

- (void)setBridge:(RCTBridge *)bridge
{
  _bridge = bridge;

  // TODO: if we add an explicit "startObserving" method, we can take this out
  // of the application startup path

  NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
  [nc addObserver:self selector:@selector(applicationDidChangeStatusBarFrame:) name:UIApplicationDidChangeStatusBarFrameNotification object:nil];
  [nc addObserver:self selector:@selector(applicationWillChangeStatusBarFrame:) name:UIApplicationWillChangeStatusBarFrameNotification object:nil];
}

- (void)dealloc
{
  [[NSNotificationCenter defaultCenter] removeObserver:self];
}

- (dispatch_queue_t)methodQueue
{
  return dispatch_get_main_queue();
}

- (void)emitEvent:(NSString *)eventName forNotification:(NSNotification *)notification
{
  CGRect frame = [notification.userInfo[UIApplicationStatusBarFrameUserInfoKey] CGRectValue];
  NSDictionary *event = @{
    @"frame": @{
      @"x": @(frame.origin.x),
      @"y": @(frame.origin.y),
      @"width": @(frame.size.width),
      @"height": @(frame.size.height),
    },
  };
  [_bridge.eventDispatcher sendDeviceEventWithName:eventName body:event];
}

- (void)applicationDidChangeStatusBarFrame:(NSNotification *)notification
{
  [self emitEvent:@"statusBarFrameDidChange" forNotification:notification];
}

- (void)applicationWillChangeStatusBarFrame:(NSNotification *)notification
{
  [self emitEvent:@"statusBarFrameWillChange" forNotification:notification];
}

RCT_EXPORT_METHOD(getHeight:(RCTResponseSenderBlock)callback)
{
  callback(@[@{
    @"height": @([UIApplication sharedApplication].statusBarFrame.size.height),
  }]);
}

RCT_EXPORT_METHOD(setStyle:(UIStatusBarStyle)statusBarStyle
                  animated:(BOOL)animated)
{
  if (RCTViewControllerBasedStatusBarAppearance()) {
    RCTLogError(@"RCTStatusBarManager module requires that the \
                UIViewControllerBasedStatusBarAppearance key in the Info.plist is set to NO");
  } else {
    [RCTSharedApplication() setStatusBarStyle:statusBarStyle
                                     animated:animated];
  }
}

RCT_EXPORT_METHOD(setHidden:(BOOL)hidden
                  withAnimation:(UIStatusBarAnimation)animation)
{
  if (RCTViewControllerBasedStatusBarAppearance()) {
    RCTLogError(@"RCTStatusBarManager module requires that the \
                UIViewControllerBasedStatusBarAppearance key in the Info.plist is set to NO");
  } else {
    [RCTSharedApplication() setStatusBarHidden:hidden
                                 withAnimation:animation];
  }
}

RCT_EXPORT_METHOD(setNetworkActivityIndicatorVisible:(BOOL)visible)
{
  RCTSharedApplication().networkActivityIndicatorVisible = visible;
}

@end