fix custom header (#3798)

* fix custom header

* fix e2e

lib/ios/RNNReactRootView.h

+#import <UIKit/UIKit.h>
+#import <React/RCTRootView.h>
+#import <React/RCTRootViewDelegate.h>
+
+@interface RNNReactRootView : RCTRootView <RCTRootViewDelegate>
+
+@property (nonatomic, copy) void (^rootViewDidChangeIntrinsicSize)(CGSize intrinsicSize);
+
+- (void)setAlignment:(NSString*)alignment;
+
+@end

lib/ios/RNNReactRootView.m

+#import "RNNReactRootView.h"
+
+@implementation RNNReactRootView
+
+- (void)setRootViewDidChangeIntrinsicSize:(void (^)(CGSize))rootViewDidChangeIntrinsicSize {
+	_rootViewDidChangeIntrinsicSize = rootViewDidChangeIntrinsicSize;
+	self.delegate = self;
+}
+
+- (void)rootViewDidChangeIntrinsicSize:(RCTRootView *)rootView {
+	if (_rootViewDidChangeIntrinsicSize) {
+		_rootViewDidChangeIntrinsicSize(rootView.intrinsicContentSize);
+	}
+}
+
+- (void)setAlignment:(NSString *)alignment {
+	if ([alignment isEqualToString:@"fill"]) {
+		self.sizeFlexibility = RCTRootViewSizeFlexibilityWidthAndHeight;
+	} else {
+		self.sizeFlexibility = RCTRootViewSizeFlexibilityNone;
+	}
+}
+
+@end

lib/ios/RNNReactRootViewCreator.m

 
 #import "RNNReactRootViewCreator.h"
-#import <React/RCTRootView.h>
-
-@interface RNNReactRootView : RCTRootView
-
-@end
-
-@implementation RNNReactRootView
-
-@end
+#import "RNNReactRootView.h"
 
 @implementation RNNReactRootViewCreator {
 	RCTBridge *_bridge;

lib/ios/RNNRootViewController.m

 #import "RNNAnimator.h"
 #import "RNNCustomTitleView.h"
 #import "RNNPushAnimation.h"
+#import "RNNReactRootView.h"
 
 @interface RNNRootViewController() {
-	UIView* _customTitleView;
+	RNNReactRootView* _customTitleView;
 	UIView* _customTopBar;
 	UIView* _customTopBarBackground;
 }
 - (void)setCustomNavigationTitleView {
 	if (!_customTitleView) {
 		if (self.options.topBar.title.component.name) {
-			RCTRootView *reactView = (RCTRootView*)[_creator createRootViewFromComponentOptions:self.options.topBar.title.component];
-			
-			_customTitleView = [[RNNCustomTitleView alloc] initWithFrame:self.navigationController.navigationBar.bounds subView:reactView alignment:self.options.topBar.title.component.alignment];
-			reactView.backgroundColor = UIColor.clearColor;
+			_customTitleView = (RNNReactRootView*)[_creator createRootViewFromComponentOptions:self.options.topBar.title.component];
 			_customTitleView.backgroundColor = UIColor.clearColor;
+			[_customTitleView setAlignment:self.options.topBar.title.component.alignment];
+			BOOL isCenter = [self.options.topBar.title.component.alignment isEqualToString:@"center"];
+			__weak RNNReactRootView *weakTitleView = _customTitleView;
+			[_customTitleView setRootViewDidChangeIntrinsicSize:^(CGSize intrinsicContentSize) {
+				if (isCenter) {
+					[weakTitleView setFrame:CGRectMake(0, 0, intrinsicContentSize.width, intrinsicContentSize.height)];
+				}
+			}];
+			[_customTitleView setFrame:self.navigationController.navigationBar.frame];
 			self.navigationItem.titleView = _customTitleView;
-		} if ([self.navigationItem.title isKindOfClass:[RNNCustomTitleView class]] && !_customTitleView) {
-			self.navigationItem.title = nil;
 		}
 	} else if (_customTitleView && _customTitleView.superview == nil) {
 		if ([self.navigationItem.title isKindOfClass:[RNNCustomTitleView class]] && !_customTitleView) {

lib/ios/ReactNativeNavigation.xcodeproj/project.pbxproj

 		5016E8F020209690009D4F7C /* RNNCustomTitleView.m in Sources */ = {isa = PBXBuildFile; fileRef = 5016E8EE2020968F009D4F7C /* RNNCustomTitleView.m */; };
 		50175CD1207A2AA1004FE91B /* RNNComponentOptions.h in Headers */ = {isa = PBXBuildFile; fileRef = 50175CCF207A2AA1004FE91B /* RNNComponentOptions.h */; };
 		50175CD2207A2AA1004FE91B /* RNNComponentOptions.m in Sources */ = {isa = PBXBuildFile; fileRef = 50175CD0207A2AA1004FE91B /* RNNComponentOptions.m */; };
+		50220F48212ABDFD004C2B0A /* RNNReactRootView.h in Headers */ = {isa = PBXBuildFile; fileRef = 50220F46212ABDFD004C2B0A /* RNNReactRootView.h */; };
+		50220F49212ABDFD004C2B0A /* RNNReactRootView.m in Sources */ = {isa = PBXBuildFile; fileRef = 50220F47212ABDFD004C2B0A /* RNNReactRootView.m */; };
 		502CB43A20CBCA180019B2FE /* RNNBridgeManagerDelegate.h in Headers */ = {isa = PBXBuildFile; fileRef = 502CB43920CBCA140019B2FE /* RNNBridgeManagerDelegate.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		502CB46E20CD1DDA0019B2FE /* RNNBackButtonOptions.h in Headers */ = {isa = PBXBuildFile; fileRef = 502CB46C20CD1DDA0019B2FE /* RNNBackButtonOptions.h */; };
 		502CB46F20CD1DDA0019B2FE /* RNNBackButtonOptions.m in Sources */ = {isa = PBXBuildFile; fileRef = 502CB46D20CD1DDA0019B2FE /* RNNBackButtonOptions.m */; };
 		5016E8EE2020968F009D4F7C /* RNNCustomTitleView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RNNCustomTitleView.m; sourceTree = "<group>"; };
 		50175CCF207A2AA1004FE91B /* RNNComponentOptions.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = RNNComponentOptions.h; sourceTree = "<group>"; };
 		50175CD0207A2AA1004FE91B /* RNNComponentOptions.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = RNNComponentOptions.m; sourceTree = "<group>"; };
+		50220F46212ABDFD004C2B0A /* RNNReactRootView.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = RNNReactRootView.h; sourceTree = "<group>"; };
+		50220F47212ABDFD004C2B0A /* RNNReactRootView.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = RNNReactRootView.m; sourceTree = "<group>"; };
 		502CB43920CBCA140019B2FE /* RNNBridgeManagerDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = RNNBridgeManagerDelegate.h; sourceTree = "<group>"; };
 		502CB46C20CD1DDA0019B2FE /* RNNBackButtonOptions.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = RNNBackButtonOptions.h; sourceTree = "<group>"; };
 		502CB46D20CD1DDA0019B2FE /* RNNBackButtonOptions.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = RNNBackButtonOptions.m; sourceTree = "<group>"; };
 				504AFE611FFE52EF0076E904 /* Options */,
 				50D031312005146C00386B3D /* Managers */,
 				50570BE82063E09B006A1B5C /* RNNTitleViewHelper.h */,
+				50220F46212ABDFD004C2B0A /* RNNReactRootView.h */,
+				50220F47212ABDFD004C2B0A /* RNNReactRootView.m */,
 				50570BE92063E09B006A1B5C /* RNNTitleViewHelper.m */,
 				26916C941E4B9CCC00D13680 /* RNNRootViewCreator.h */,
 				26916C961E4B9E7700D13680 /* RNNReactRootViewCreator.h */,
 				E8E5182E1F83A48B000467AC /* RNNTransitionStateHolder.h in Headers */,
 				50887CAA20F26BFE00D06111 /* RNNOverlayWindow.h in Headers */,
 				507E7D57201DDD3000444E6C /* RNNAnimationOptions.h in Headers */,
+				50220F48212ABDFD004C2B0A /* RNNReactRootView.h in Headers */,
 				2DCD9195200014A900EDC75D /* RNNBridgeManager.h in Headers */,
 				7B1126A91E2D2B6C00F9B03B /* RNNControllerFactory.h in Headers */,
 				263905D61E4C94970023D7D3 /* RNNSideMenuController.h in Headers */,
 				50EB4ED82068EBE000D6ED34 /* RNNBackgroundOptions.m in Sources */,
 				507F43CA1FF4F9CC00D9425B /* RNNTopTabOptions.m in Sources */,
 				26916C991E4B9E7700D13680 /* RNNReactRootViewCreator.m in Sources */,
+				50220F49212ABDFD004C2B0A /* RNNReactRootView.m in Sources */,
 				5064495E20DC62B90026709C /* RNNSideMenuSideOptions.m in Sources */,
 				214545251F4DC125006E8DA1 /* RNNUIBarButtonItem.m in Sources */,
 				263905B81E4C6F440023D7D3 /* UIViewController+MMDrawerController.m in Sources */,