Introducing "collapsable" prop as part of ViewProps

Summary: This diff introduces the collapsable props in the viewProps. This prop is used in product code to prevent specific Views to be removed from the view hierarchy

Reviewed By: shergin

Differential Revision: D10254679

fbshipit-source-id: 637665b8998a86e29e839eb6d405a0fac354c8d3

Author: mdvacca

ReactAndroid/src/main/java/com/facebook/react/uimanager/TouchTargetHelper.java

@@ -177,15 +177,15 @@ private static boolean isTransformedTouchPointInView(
     if (child instanceof ReactHitSlopView && ((ReactHitSlopView) child).getHitSlopRect() != null) {
       Rect hitSlopRect = ((ReactHitSlopView) child).getHitSlopRect();
       if ((localX >= -hitSlopRect.left && localX < (child.getRight() - child.getLeft()) + hitSlopRect.right)
-          && (localY >= -hitSlopRect.top && localY < (child.getBottom() - child.getTop()) + hitSlopRect.bottom)) {
+        && (localY >= -hitSlopRect.top && localY < (child.getBottom() - child.getTop()) + hitSlopRect.bottom)) {
         outLocalPoint.set(localX, localY);
         return true;
       }
 
       return false;
     } else {
       if ((localX >= 0 && localX < (child.getRight() - child.getLeft()))
-          && (localY >= 0 && localY < (child.getBottom() - child.getTop()))) {
+        && (localY >= 0 && localY < (child.getBottom() - child.getTop()))) {
         outLocalPoint.set(localX, localY);
         return true;
       }

ReactCommon/fabric/components/view/ViewProps.cpp

@@ -67,7 +67,12 @@ ViewProps::ViewProps(const ViewProps &sourceProps, const RawProps &rawProps)
       pointerEvents(
           convertRawProp(rawProps, "pointerEvents", sourceProps.pointerEvents)),
       hitSlop(convertRawProp(rawProps, "hitSlop", sourceProps.hitSlop)),
-      onLayout(convertRawProp(rawProps, "onLayout", sourceProps.onLayout)){};
+      onLayout(convertRawProp(rawProps, "onLayout", sourceProps.onLayout)),
+      collapsable(convertRawProp(
+          rawProps,
+          "collapsable",
+          sourceProps.collapsable,
+          true)){};
 
 #pragma mark - Convenience Methods
 

ReactCommon/fabric/components/view/ViewProps.h

@@ -58,6 +58,8 @@ class ViewProps : public Props,
   const EdgeInsets hitSlop{};
   const bool onLayout{};
 
+  const bool collapsable{true};
+
 #pragma mark - Convenience Methods
 
   BorderMetrics resolveBorderMetrics(bool isRTL) const;