V2 background Image options (#2375)

* added backgroundImages options

* update readme

* backgroundImage fix

* added unit test

README.md

 | screenBackgroundColor        |   ✅     |     [Contribute](/docs/docs/CONTRIBUTING.md)       |  Wix|
 | orientation       |    ✅     |   [Contribute](/docs/docs/CONTRIBUTING.md)          | Wix|
 | disabledBackGesture        |    ✅     |    / iOS specific     |
-| screenBackgroundImageName        |   [Contribute](/docs/docs/CONTRIBUTING.md)      |    [Contribute](/docs/docs/CONTRIBUTING.md)        |
-| rootBackgroundImageName              |    [Contribute](/docs/docs/CONTRIBUTING.md)     |    [Contribute](/docs/docs/CONTRIBUTING.md)       |
+| screenBackgroundImageName        |   ✅      |    [Contribute](/docs/docs/CONTRIBUTING.md)        |
+| rootBackgroundImageName              |    ✅     |    [Contribute](/docs/docs/CONTRIBUTING.md)       |
 | sideMenuVisible          |        [Contribute](/docs/docs/CONTRIBUTING.md)   | [Contribute](/docs/docs/CONTRIBUTING.md) |
 
 
 | statusBarHideWithTopBar        |  ✅   |   ✅     |     [Contribute](/docs/docs/CONTRIBUTING.md)       | @gtchance|
 | statusBarHidden       |  ✅   |    ✅       |     [Contribute](/docs/docs/CONTRIBUTING.md)      | WIX |
 | disabledBackGesture       |   ✅  |   ✅  |    / iOS specific     |
-| screenBackgroundImageName         |   ✅  |   [Contribute](/docs/docs/CONTRIBUTING.md)      |    [Contribute](/docs/docs/CONTRIBUTING.md)        |
-| rootBackgroundImageName            |  ✅   |    [Contribute](/docs/docs/CONTRIBUTING.md)     |    [Contribute](/docs/docs/CONTRIBUTING.md)       |
+| screenBackgroundImageName         |   ✅  |   ✅      |    [Contribute](/docs/docs/CONTRIBUTING.md)        |
+| rootBackgroundImageName            |  ✅   |    ✅     |    [Contribute](/docs/docs/CONTRIBUTING.md)       |
 | setButtons          |   ✅     |    ✅    | [Contribute](/docs/docs/CONTRIBUTING.md) | @Johan-dutoit|
 | title            |   ✅     |        	✅    | 	✅| Wix|
 | toggleDrawer        |   ✅     |       ✅    | [Contribute](/docs/docs/CONTRIBUTING.md) |

lib/ios/RNNNavigationOptions.h

 @property (nonatomic, strong) RNNTopBarOptions* topBar;
 @property (nonatomic, strong) RNNTabBarOptions* bottomTabs;
 @property (nonatomic, strong) RNNSideMenuOptions* sideMenu;
-
+@property (nonatomic, strong) UIImage* backgroundImage;
+@property (nonatomic, strong) UIImage* rootBackgroundImage;
 
 - (UIInterfaceOrientationMask)supportedOrientations;
 

lib/ios/RNNNavigationOptions.m

 	self.topBar = [[RNNTopBarOptions alloc] initWithDict:[navigationOptions objectForKey:@"topBar"]];
 	self.bottomTabs = [[RNNTabBarOptions alloc] initWithDict:[navigationOptions objectForKey:@"bottomTabs"]];
 	self.sideMenu = [[RNNSideMenuOptions alloc] initWithDict:[navigationOptions objectForKey:@"sideMenu"]];
-	
+	self.backgroundImage = [RCTConvert UIImage:[navigationOptions objectForKey:@"backgroundImage"]];
+	self.rootBackgroundImage = [RCTConvert UIImage:[navigationOptions objectForKey:@"rootBackgroundImage"]];
+
 	return self;
 }
 
 		
 		[self.sideMenu resetOptions];
 	}
+	
+	if (self.backgroundImage) {
+		UIImageView* backgroundImageView = (viewController.view.subviews.count > 0) ? viewController.view.subviews[0] : nil;
+		if (![backgroundImageView isKindOfClass:[UIImageView class]]) {
+			backgroundImageView = [[UIImageView alloc] initWithFrame:viewController.view.bounds];
+			[viewController.view insertSubview:backgroundImageView atIndex:0];
+		}
+		
+		backgroundImageView.layer.masksToBounds = YES;
+		backgroundImageView.image = self.backgroundImage;
+		[backgroundImageView setContentMode:UIViewContentModeScaleAspectFill];
+	}
+	
+	if (self.rootBackgroundImage) {
+		UIImageView* backgroundImageView = (viewController.navigationController.view.subviews.count > 0) ? viewController.navigationController.view.subviews[0] : nil;
+		if (![backgroundImageView isKindOfClass:[UIImageView class]]) {
+			backgroundImageView = [[UIImageView alloc] initWithFrame:viewController.view.bounds];
+			[viewController.navigationController.view insertSubview:backgroundImageView atIndex:0];
+		}
+		
+		backgroundImageView.layer.masksToBounds = YES;
+		backgroundImageView.image = self.rootBackgroundImage;
+		[backgroundImageView setContentMode:UIViewContentModeScaleAspectFill];
+	}
 }
 
 - (UIInterfaceOrientationMask)supportedOrientations {

lib/ios/ReactNativeNavigationTests/RNNRootViewControllerTest.m

 	XCTAssertNotNil([self.uut.navigationController.navigationBar viewWithTag:BLUR_TOPBAR_TAG]);
 }
 
+-(void)testBackgroundImage {
+	UIImage* backgroundImage = [[UIImage alloc] init];
+	self.options.backgroundImage = backgroundImage;
+	__unused UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:self.uut];
+	[self.uut viewWillAppear:false];
+	XCTAssertTrue([[(UIImageView*)self.uut.view.subviews[0] image] isEqual:backgroundImage]);
+}
+
+-(void)testRootBackgroundImage {
+	UIImage* rootBackgroundImage = [[UIImage alloc] init];
+	self.options.rootBackgroundImage = rootBackgroundImage;
+	__unused UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:self.uut];
+	[self.uut viewWillAppear:false];
+	XCTAssertTrue([[(UIImageView*)self.uut.navigationController.view.subviews[0] image] isEqual:rootBackgroundImage]);
+}
+
 -(void)testTopBarDrawUnder_true {
 	self.options.topBar.drawUnder = @(1);
 	__unused UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:self.uut];

lib/src/commands/OptionsProcessor.js

 class OptionsProcessor {
   static processOptions(navigationOptions) {
     _.forEach(navigationOptions, (value, key) => {
-      if (_.endsWith(key, 'Color')) {
-        navigationOptions[key] = processColor(value);
-      }
-      if (_.isEqual(key, 'icon') || _.endsWith(key, 'Icon') || _.endsWith(key, 'Image')) {
-        navigationOptions[key] = resolveAssetSource(navigationOptions[key]);
-      }
-      if (_.isObject(value) || _.isArray(value)) {
-        OptionsProcessor.processOptions(value);
+      if (value) {
+        if (_.endsWith(key, 'Color')) {
+          navigationOptions[key] = processColor(value);
+        }
+        if (_.isEqual(key, 'icon') || _.endsWith(key, 'Icon') || _.endsWith(key, 'Image')) {
+          navigationOptions[key] = resolveAssetSource(navigationOptions[key]);
+        }
+        if (_.isObject(value) || _.isArray(value)) {
+          OptionsProcessor.processOptions(value);
+        }
       }
     });
   }

lib/src/commands/OptionsProcessor.test.js

 
     expect(navigationOptionsObj.topBar.textColor).toEqual(0xffff0000);
   });
+
+  it('undefined value return undefined ', () => {
+    navigationOptions.someImage = undefined;
+    OptionsProcessor.processOptions(navigationOptions);
+
+    expect(navigationOptions.someImage).toEqual(undefined);
+  });
 });

lib/src/params/NavigationOptions.js

     this.rightButtons = options.rightButtons && options.rightButtons.map((button) => new Button(button));
     this.leftButtons = options.leftButtons && options.leftButtons.map((button) => new Button(button));
     this.sideMenu = options.sideMenu;
+    this.backgroundImage = options.backgroundImage;
+    this.rootBackgroundImage = options.rootBackgroundImage;
+    this.screenBackgroundColor = options.screenBackgroundColor;
   }
 }