[TIMOB-25301]:iPhone X: Need to be able to control the Insets / Layout Margins

iphone/Classes/TiUIWindowProxy.h

@@ -27,6 +27,8 @@
 - (void)refreshBackButton;
 - (void)updateNavBar;
 - (void)boot:(BOOL)timeout args:(id)args;
+@property (nonatomic, assign) TiViewProxy *safeAreaViewProxy;
+@property (nonatomic) BOOL shouldExtendSafeArea;
 
 @end
 

iphone/Classes/TiUIWindowProxy.m

@@ -246,6 +246,9 @@ - (BOOL)_handleClose:(id)args
 
 - (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
 {
+  [self performSelector:@selector(processForSafeArea)
+                    withObject:nil
+             afterDelay:[[UIApplication sharedApplication] statusBarOrientationAnimationDuration]];
   [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];
   [self willChangeSize];
 }
@@ -937,6 +940,49 @@ - (void)cleanupWindowDecorations
     [barImageView removeFromSuperview];
   }
 }
+
+- (void)processForSafeArea
+{
+  if (self.shouldExtendSafeArea) {
+    return;
+  }
+#if IS_XCODE_9
+  float left = 0.0;
+  float right = 0.0;
+  float top = 0.0;
+  float bottom = 0.0;
+  if ([TiUtils isIOS11OrGreater]) {
+    UIViewController<TiControllerContainment> *topContainerController = [[[TiApp app] controller] topContainerController];
+    UIView *rootView = [topContainerController hostingView];
+    if (self.tabGroup) {
+      UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
+      if (!UIInterfaceOrientationIsPortrait(orientation)) {
+        left = rootView.safeAreaInsets.left;
+        right = rootView.safeAreaInsets.right;
+      }
+    } else if (self.tab) {
+      UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
+      if (!UIInterfaceOrientationIsPortrait(orientation)) {
+        left = rootView.safeAreaInsets.left;
+        right = rootView.safeAreaInsets.right;
+        bottom = rootView.safeAreaInsets.bottom;
+      } else {
+        bottom = rootView.safeAreaInsets.bottom;
+      }
+    } else {
+      left = rootView.safeAreaInsets.left;
+      right = rootView.safeAreaInsets.right;
+      bottom = rootView.safeAreaInsets.bottom;
+      top = rootView.safeAreaInsets.top;
+    }
+    [self.safeAreaViewProxy setTop:[NSNumber numberWithFloat:top]];
+    [self.safeAreaViewProxy setBottom:[NSNumber numberWithFloat:bottom]];
+    [self.safeAreaViewProxy setLeft:[NSNumber numberWithFloat:left]];
+    [self.safeAreaViewProxy setRight:[NSNumber numberWithFloat:right]];
+  }
+#endif
+}
+
 @end
 
 #endif

iphone/Classes/TiViewProxy.m

@@ -20,6 +20,8 @@
 #import <QuartzCore/QuartzCore.h>
 #import <libkern/OSAtomic.h>
 #import <pthread.h>
+#import "TiUIWindowProxy.h"
+#import "TiUIViewProxy.h"
 
 #define IGNORE_IF_NOT_OPENED                      \
   if (!windowOpened || [self viewAttached] == NO) \
@@ -167,10 +169,25 @@ - (BOOL)belongsToContext:(id<TiEvaluator>)context
 
 - (void)add:(id)arg
 {
+  TiUIWindowProxy *windowProxy = nil;
+  if ([self isKindOfClass:[TiUIWindowProxy class]]) {
+    //Added a transparent safeAreaViewProxy above window for safe area layouts if shouldExtendSafeArea is false. All views added on window will be added on safeAreaViewProxy. Layouts of safeAreaViewProxy is getting modified wherever required.
+     windowProxy = (TiUIWindowProxy *)self;
+     windowProxy.shouldExtendSafeArea = [TiUtils boolValue:[self valueForUndefinedKey:@"extendSafeArea"]
+                                             def:NO];
+    if (!windowProxy.safeAreaViewProxy && !windowProxy.shouldExtendSafeArea) {
+      windowProxy.safeAreaViewProxy = [[TiUIViewProxy alloc] _initWithPageContext:[self pageContext] args:nil];
+      [self add:windowProxy.safeAreaViewProxy];
+    }
+  }
   // allow either an array of arrays or an array of single proxy
   if ([arg isKindOfClass:[NSArray class]]) {
     for (id a in arg) {
-      [self add:a];
+      if (windowProxy.safeAreaViewProxy) {
+        [windowProxy.safeAreaViewProxy add:a];
+      } else {
+        [self add:a];
+      }
     }
     return;
   }

iphone/Classes/TiWindowProxy.m

@@ -9,6 +9,7 @@
 #import "TiApp.h"
 #import "TiErrorController.h"
 #import "TiUIWindow.h"
+#import "TiUIWindowProxy.h"
 
 @interface TiWindowProxy (Private)
 - (void)openOnUIThread:(id)args;
@@ -425,6 +426,7 @@ - (void)gainFocus
     }
     UIAccessibilityPostNotification(UIAccessibilityScreenChangedNotification, nil);
     [[self view] setAccessibilityElementsHidden:NO];
+    [self processForSafeArea];
   }
   TiThreadPerformOnMainThread(^{
     [self forceNavBarFrame];
@@ -856,4 +858,9 @@ - (void)setTransitionAnimation:(id)args
 }
 #endif
 
+- (void)processForSafeArea
+{
+  // Overridden in subclass
+}
+
 @end