Converted RCTDevLoadingView to a module and fixed url display when using delegate

React/Modules/RCTDevLoadingView.m

@@ -0,0 +1,121 @@
+/**
+ * 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 <QuartzCore/QuartzCore.h>
+
+#import "RCTBridge.h"
+#import "RCTDevLoadingView.h"
+#import "RCTDefines.h"
+#import "RCTUtils.h"
+
+#if RCT_DEV
+
+@implementation RCTDevLoadingView
+{
+  UIWindow *_window;
+  UILabel *_label;
+  NSDate *_showDate;
+}
+
+@synthesize bridge = _bridge;
+
+RCT_EXPORT_MODULE()
+
+- (instancetype)init
+{
+  if ((self = [super init])) {
+
+    [[NSNotificationCenter defaultCenter] addObserver:self
+                                             selector:@selector(hide)
+                                                 name:RCTJavaScriptDidLoadNotification
+                                               object:nil];
+
+    [[NSNotificationCenter defaultCenter] addObserver:self
+                                             selector:@selector(hide)
+                                                 name:RCTJavaScriptDidFailToLoadNotification
+                                               object:nil];
+  }
+  return self;
+}
+
+- (void)dealloc
+{
+  [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
+- (void)setBridge:(RCTBridge *)bridge
+{
+  _bridge = bridge;
+  [self showWithURL:bridge.bundleURL];
+}
+
+- (void)showWithURL:(NSURL *)URL
+{
+  dispatch_async(dispatch_get_main_queue(), ^{
+
+    _showDate = [NSDate date];
+    if (!_window && !RCTRunningInTestEnvironment()) {
+      CGFloat screenWidth = [[UIScreen mainScreen] bounds].size.width;
+      _window = [[UIWindow alloc] initWithFrame:CGRectMake(0, 0, screenWidth, 22)];
+      _window.backgroundColor = [UIColor blackColor];
+      _window.windowLevel = UIWindowLevelStatusBar + 1;
+
+      _label = [[UILabel alloc] initWithFrame:_window.bounds];
+      _label.font = [UIFont systemFontOfSize:12.0];
+      _label.textColor = [UIColor grayColor];
+      _label.textAlignment = NSTextAlignmentCenter;
+
+      [_window addSubview:_label];
+      [_window makeKeyAndVisible];
+    }
+
+    NSString *source;
+    if ([URL isFileURL]) {
+      source = @"pre-bundled file";
+    } else {
+      source = [NSString stringWithFormat:@"%@:%@", [URL host], [URL port]];
+    }
+
+    _label.text = [NSString stringWithFormat:@"Loading from %@...", source];
+    _window.hidden = NO;
+
+  });
+}
+
+- (void)hide
+{
+  dispatch_async(dispatch_get_main_queue(), ^{
+
+    const NSTimeInterval MIN_PRESENTED_TIME = 0.6;
+    NSTimeInterval presentedTime = [[NSDate date] timeIntervalSinceDate:_showDate];
+    NSTimeInterval delay = MAX(0, MIN_PRESENTED_TIME - presentedTime);
+
+    CGRect windowFrame = _window.frame;
+    [UIView animateWithDuration:0.25
+                          delay:delay
+                        options:0
+                     animations:^{
+                       _window.frame = CGRectOffset(windowFrame, 0, -windowFrame.size.height);
+                     } completion:^(__unused BOOL finished) {
+                       _window.frame = windowFrame;
+                       _window.hidden = YES;
+                       _window = nil;
+                     }];
+  });
+}
+
+@end
+
+#else
+
+@implementation RCTDevLoadingView
+
+@end
+
+#endif