Adding hideNavBarOnFocusSearchBar option (#4578)

* hidesNavigationBarDuringPresentation SearchBar

* Adding hideNavBarOnFocusSearchBar option

* Fixing compilation error

* Code cleanup

* code refactoring

lib/ios/RNNTopBarOptions.h

 @property (nonatomic, strong) Bool* animate;
 @property (nonatomic, strong) Bool* searchBar;
 @property (nonatomic, strong) Bool* searchBarHiddenWhenScrolling;
+@property (nonatomic, strong) Bool* hideNavBarOnFocusSearchBar;
 @property (nonatomic, strong) Text* testID;
 @property (nonatomic, strong) Text* barStyle;
 @property (nonatomic, strong) Text* searchBarPlaceholder;

lib/ios/RNNTopBarOptions.m

 
 - (instancetype)initWithDict:(NSDictionary *)dict {
 	self = [super init];
-	
 	self.visible = [BoolParser parse:dict key:@"visible"];
 	self.hideOnScroll = [BoolParser parse:dict key:@"hideOnScroll"];
 	self.leftButtonColor = [ColorParser parse:dict key:@"leftButtonColor"];
 	self.animate = [BoolParser parse:dict key:@"animate"];
 	self.searchBar = [BoolParser parse:dict key:@"searchBar"];
 	self.searchBarHiddenWhenScrolling = [BoolParser parse:dict key:@"searchBarHiddenWhenScrolling"];
+	self.hideNavBarOnFocusSearchBar = [BoolParser parse:dict key:@"hideNavBarOnFocusSearchBar"];
 	self.testID = [TextParser parse:dict key:@"testID"];
 	self.barStyle = [TextParser parse:dict key:@"barStyle"];
 	self.searchBarPlaceholder = [TextParser parse:dict key:@"searchBarPlaceholder"];
 	self.leftButtons = dict[@"leftButtons"];
 	self.rightButtons = dict[@"rightButtons"];
 	
-
 	return self;
 }
 

lib/ios/RNNViewControllerPresenter.m

 	}
 	
 	if (options.topBar.searchBar.hasValue) {
-		[viewController rnn_setSearchBarWithPlaceholder:[options.topBar.searchBarPlaceholder getWithDefaultValue:@""]];
+		BOOL hideNavBarOnFocusSearchBar = YES;
+		if (options.topBar.hideNavBarOnFocusSearchBar.hasValue) {
+			hideNavBarOnFocusSearchBar = options.topBar.hideNavBarOnFocusSearchBar.get;
+		}
+		[viewController rnn_setSearchBarWithPlaceholder:[options.topBar.searchBarPlaceholder getWithDefaultValue:@""] hideNavBarOnFocusSearchBar: hideNavBarOnFocusSearchBar];
 	}
 }
 
 	}
 	
 	if (newOptions.topBar.searchBar.hasValue) {
-		[viewController rnn_setSearchBarWithPlaceholder:[newOptions.topBar.searchBarPlaceholder getWithDefaultValue:@""]];
+		BOOL hideNavBarOnFocusSearchBar = YES;
+		if (newOptions.topBar.hideNavBarOnFocusSearchBar.hasValue) {
+			hideNavBarOnFocusSearchBar = newOptions.topBar.hideNavBarOnFocusSearchBar.get;
+		}
+		[viewController rnn_setSearchBarWithPlaceholder:[newOptions.topBar.searchBarPlaceholder getWithDefaultValue:@""] hideNavBarOnFocusSearchBar:hideNavBarOnFocusSearchBar];
 	}
 	
 	if (newOptions.topBar.drawBehind.hasValue) {

lib/ios/UIViewController+RNNOptions.h

 
 - (void)rnn_setModalTransitionStyle:(UIModalTransitionStyle)modalTransitionStyle;
 
-- (void)rnn_setSearchBarWithPlaceholder:(NSString *)placeholder;
+- (void)rnn_setSearchBarWithPlaceholder:(NSString *)placeholder hideNavBarOnFocusSearchBar:(BOOL)hideNavBarOnFocusSearchBar;
 
 - (void)rnn_setSearchBarHiddenWhenScrolling:(BOOL)searchBarHidden;
 

lib/ios/UIViewController+RNNOptions.m

 	self.modalTransitionStyle = modalTransitionStyle;
 }
 
-- (void)rnn_setSearchBarWithPlaceholder:(NSString *)placeholder {
+- (void)rnn_setSearchBarWithPlaceholder:(NSString *)placeholder 
+						hideNavBarOnFocusSearchBar:(BOOL)hideNavBarOnFocusSearchBar {
 	if (@available(iOS 11.0, *)) {
 		if (!self.navigationItem.searchController) {
 			UISearchController *search = [[UISearchController alloc]initWithSearchResultsController:nil];
 			if (placeholder) {
 				search.searchBar.placeholder = placeholder;
 			}
+			search.hidesNavigationBarDuringPresentation = hideNavBarOnFocusSearchBar;
 			self.navigationItem.searchController = search;
 			
 			// Fixes #3450, otherwise, UIKit will infer the presentation context to be the root most view controller

lib/src/interfaces/Options.ts

    * #### (iOS 11+ specific)
    */
   searchBarPlaceholder?: string;
+  /**
+   * Controls Hiding NavBar on focus UISearchBar
+   * #### (iOS 11+ specific)
+   */
+  hideNavBarOnFocusSearchBar?: boolean;
   /**
    * Control the Large Title configuration
    * #### (iOS 11+ specific)

playground/src/screens/SearchScreen.js

 
 class SearchControllerScreen extends Component {
   static options() {
+   
     return {
       topBar: {
         title: {
         background: {
           translucent: true
         },
-        searchBarPlaceholder: 'Start Typing'
+        searchBarPlaceholder: 'Start Typing',
+        hideNavBarOnFocusSearchBar: false
       }
     };
   }