V2 drawUnder for topBar and bottomTabs (#2376)

* drawUnder for topBar and bottomTabs

* test fix

README.md

 | translucent         |   ✅     |     [Contribute](/docs/docs/CONTRIBUTING.md)        | Wix|
 | transparent         |  ✅        |     [Contribute](/docs/docs/CONTRIBUTING.md)        |
 | noBorder             |    ✅     |     [Contribute](/docs/docs/CONTRIBUTING.md)        |  @gtchance|
-| drawUnder         |    WIP @gran33     |      [Contribute](/docs/docs/CONTRIBUTING.md)       ||
+| drawUnder         |    ✅     |      [Contribute](/docs/docs/CONTRIBUTING.md)       ||
 | blur               |    ✅     |      [Contribute](/docs/docs/CONTRIBUTING.md)       | @gtchance|
 | custom          |     WIP @gran33     | [Contribute](/docs/docs/CONTRIBUTING.md)|
 | subtitleColor            |   [Contribute](/docs/docs/CONTRIBUTING.md)     |      [Contribute](/docs/docs/CONTRIBUTING.md)      |
 
 |       tabBar         | iOS  | Android | contributors|
 |--------------------|-----|----|-----|
-| drawUnder          |    WIP @gran33     |      [Contribute](/docs/docs/CONTRIBUTING.md)       | |
+| drawUnder          |    ✅     |      [Contribute](/docs/docs/CONTRIBUTING.md)       | |
 | hidden   |   ✅     |    ✅        | @gtchance |
 | tabBadge          |       ✅    | [Contribute](/docs/docs/CONTRIBUTING.md)| Wix|
 | currentTab by Index          |       ✅    | ✅ | Wix |
 | topBarTranslucent     |  ✅     |   ✅     |     [Contribute](/docs/docs/CONTRIBUTING.md)        | Wix|
 | topBarTransparent     | ✅      |   WIP @bogobogo     |     [Contribute](/docs/docs/CONTRIBUTING.md)        |
 | topBarNoBorder        |  ✅     |    ✅     |     [Contribute](/docs/docs/CONTRIBUTING.md)        |  @gtchance|
-| drawUnderTabBar       |  ✅     |    WIP @gran33     |      [Contribute](/docs/docs/CONTRIBUTING.md)       | |
-| drawUnderTopBar       |  ✅     |    WIP @gran33     |      [Contribute](/docs/docs/CONTRIBUTING.md)       ||
+| drawUnderTabBar       |  ✅     |    ✅     |      [Contribute](/docs/docs/CONTRIBUTING.md)       | |
+| drawUnderTopBar       |  ✅     |    ✅     |      [Contribute](/docs/docs/CONTRIBUTING.md)       ||
 | statusBarBlur         |  ✅     |    ✅     |      [Contribute](/docs/docs/CONTRIBUTING.md)       | @gtchance|
 | topBarBlur            | ✅      |    ✅     |      [Contribute](/docs/docs/CONTRIBUTING.md)       | @gtchance|
 | tabBarHidden  |   ✅  |   ✅     |    [Contribute](/docs/docs/CONTRIBUTING.md)        | @gtchance|

lib/ios/RNNNavigationOptions.m

 		if (self.topBar.translucent) {
 			viewController.navigationController.navigationBar.translucent = [self.topBar.translucent boolValue];
 		}
+
+		if (self.topBar.drawUnder) {
+			if ([self.topBar.drawUnder boolValue]) {
+				viewController.edgesForExtendedLayout |= UIRectEdgeTop;
+			} else {
+				viewController.edgesForExtendedLayout &= ~UIRectEdgeTop;
+			}
+		}
 		
 		if (self.topBar.noBorder) {
 			if ([self.topBar.noBorder boolValue]) {
 		if (self.bottomTabs.testID) {
 			viewController.tabBarController.tabBar.accessibilityIdentifier = self.bottomTabs.testID;
 		}
+		
+		if (self.bottomTabs.drawUnder) {
+			if ([self.bottomTabs.drawUnder boolValue]) {
+				viewController.edgesForExtendedLayout |= UIRectEdgeBottom;
+			} else {
+				viewController.edgesForExtendedLayout &= ~UIRectEdgeBottom;
+			}
+		}
 	}
 	
 	if (self.statusBarBlur) {

lib/ios/RNNTabBarOptions.h

 @property (nonatomic, strong) NSString* tabBadge;
 @property (nonatomic, strong) NSNumber* currentTabIndex;
 @property (nonatomic, strong) NSString* testID;
+@property (nonatomic, strong) NSNumber* drawUnder;
 
 -(instancetype)init;
 -(instancetype)initWithDict:(NSDictionary *)topBarOptions;

lib/ios/RNNTopBarOptions.h

 @property (nonatomic, strong) NSNumber* buttonColor;
 @property (nonatomic, strong) NSNumber* translucent;
 @property (nonatomic, strong) NSNumber* transparent;
+@property (nonatomic, strong) NSNumber* drawUnder;
 @property (nonatomic, strong) NSNumber* textFontSize;
 @property (nonatomic, strong) NSNumber* noBorder;
 @property (nonatomic, strong) NSNumber* blur;

lib/ios/ReactNativeNavigationTests/RNNRootViewControllerTest.m

 	XCTAssertEqual(self.uut.navigationItem.largeTitleDisplayMode, UINavigationItemLargeTitleDisplayModeAlways);
 }
 -(void)testTopBarLargeTitle_false {
-	self.options.tabBar.hidden = @(0);
+	self.options.topBar.largeTitle  = @(0);
 	__unused UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:self.uut];
 	[self.uut viewWillAppear:false];
 	
 	XCTAssertNotNil([self.uut.navigationController.navigationBar viewWithTag:BLUR_TOPBAR_TAG]);
 }
 
+-(void)testTopBarDrawUnder_true {
+	self.options.topBar.drawUnder = @(1);
+	__unused UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:self.uut];
+	[self.uut viewWillAppear:false];
+	
+	XCTAssertTrue(self.uut.edgesForExtendedLayout & UIRectEdgeTop);
+}
+
+-(void)testTopBarDrawUnder_false {
+	self.options.topBar.drawUnder = @(0);
+	__unused UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:self.uut];
+	[self.uut viewWillAppear:false];
+	
+	XCTAssertFalse(self.uut.edgesForExtendedLayout & UIRectEdgeTop);
+}
+
+-(void)testBottomTabsDrawUnder_true {
+	self.options.bottomTabs.drawUnder = @(1);
+	__unused UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:self.uut];
+	[self.uut viewWillAppear:false];
+	
+	XCTAssertTrue(self.uut.edgesForExtendedLayout & UIRectEdgeBottom);
+}
+
+-(void)testBottomTabsDrawUnder_false {
+	self.options.bottomTabs.drawUnder = @(0);
+	__unused UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:self.uut];
+	[self.uut viewWillAppear:false];
+	
+	XCTAssertFalse(self.uut.edgesForExtendedLayout & UIRectEdgeBottom);
+}
+
 @end