Disable view flattening when the view has event handlers on Android

Summary:
The views with touch event props are currently flattened by Fabric core, as we don't take event listeners into account when calculating whether the view should be flattened. This results in a confusing situation when components with touch event listeners (e.g. `<View onTouchStart={() => {}} /> `) or ones using `PanResponder` are either ignored (iOS) or cause a crash (Android).

This change passes touch event props to C++ layer and uses them to calculate whether the view node should be flattened or not. It also refactors events to be kept as a singular bitset with 32 bit (~`uint32_t`).

Changelog: [Changed][General] Avoid flattening nodes with event props

Reviewed By: sammy-SC

Differential Revision: D34005536

fbshipit-source-id: 96255b389a7bfff4aa208a96fd0c173d9edf1512

Author: Andrei Shikov

Libraries/NativeComponent/PlatformBaseViewConfig.js

@@ -38,13 +38,13 @@ const PlatformBaseViewConfig: PartialViewConfigWithoutName =
             registrationName: 'onAccessibilityAction',
           },
           topPointerEnter: {
-            registrationName: 'pointerenter',
+            registrationName: 'onPointerEnter',
           },
           topPointerLeave: {
-            registrationName: 'pointerleave',
+            registrationName: 'onPointerLeave',
           },
           topPointerMove: {
-            registrationName: 'pointermove',
+            registrationName: 'onPointerMove',
           },
           onGestureHandlerEvent: DynamicallyInjectedByGestureHandler({
             registrationName: 'onGestureHandlerEvent',
@@ -219,9 +219,31 @@ const PlatformBaseViewConfig: PartialViewConfigWithoutName =
           position: true,
           onLayout: true,
 
-          pointerenter: true,
-          pointerleave: true,
-          pointermove: true,
+          // Pointer events
+          onPointerEnter: true,
+          onPointerLeave: true,
+          onPointerMove: true,
+
+          // PanResponder handlers
+          onMoveShouldSetResponder: true,
+          onMoveShouldSetResponderCapture: true,
+          onStartShouldSetResponder: true,
+          onStartShouldSetResponderCapture: true,
+          onResponderGrant: true,
+          onResponderReject: true,
+          onResponderStart: true,
+          onResponderEnd: true,
+          onResponderRelease: true,
+          onResponderMove: true,
+          onResponderTerminate: true,
+          onResponderTerminationRequest: true,
+          onShouldBlockNativeResponder: true,
+
+          // Touch events
+          onTouchStart: true,
+          onTouchMove: true,
+          onTouchEnd: true,
+          onTouchCancel: true,
 
           style: ReactNativeStyleAttributes,
         },
@@ -456,6 +478,27 @@ const PlatformBaseViewConfig: PartialViewConfigWithoutName =
             onAccessibilityAction: true,
             onAccessibilityEscape: true,
             onAccessibilityTap: true,
+
+            // PanResponder handlers
+            onMoveShouldSetResponder: true,
+            onMoveShouldSetResponderCapture: true,
+            onStartShouldSetResponder: true,
+            onStartShouldSetResponderCapture: true,
+            onResponderGrant: true,
+            onResponderReject: true,
+            onResponderStart: true,
+            onResponderEnd: true,
+            onResponderRelease: true,
+            onResponderMove: true,
+            onResponderTerminate: true,
+            onResponderTerminationRequest: true,
+            onShouldBlockNativeResponder: true,
+
+            // Touch events
+            onTouchStart: true,
+            onTouchMove: true,
+            onTouchEnd: true,
+            onTouchCancel: true,
           }),
         },
       };

React/Views/RCTViewManager.m

@@ -418,4 +418,29 @@ - (RCTShadowView *)shadowView
 
 RCT_EXPORT_SHADOW_PROPERTY(direction, YGDirection)
 
+// The events below define the properties that are not used by native directly, but required in the view config for new
+// renderer to function.
+// They can be deleted after Static View Configs are rolled out.
+
+// PanResponder handlers
+RCT_CUSTOM_VIEW_PROPERTY(onMoveShouldSetResponder, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onMoveShouldSetResponderCapture, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onStartShouldSetResponder, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onStartShouldSetResponderCapture, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onResponderGrant, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onResponderReject, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onResponderStart, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onResponderEnd, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onResponderRelease, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onResponderMove, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onResponderTerminate, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onResponderTerminationRequest, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onShouldBlockNativeResponder, BOOL, RCTView) {}
+
+// Touch events
+RCT_CUSTOM_VIEW_PROPERTY(onTouchStart, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onTouchMove, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onTouchEnd, BOOL, RCTView) {}
+RCT_CUSTOM_VIEW_PROPERTY(onTouchCancel, BOOL, RCTView) {}
+
 @end

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

@@ -486,18 +486,103 @@ private void logUnsupportedPropertyWarning(String propName) {
     FLog.w(ReactConstants.TAG, "%s doesn't support property '%s'", getName(), propName);
   }
 
-  @ReactProp(name = "pointerenter")
-  public void setPointerEnter(@NonNull T view, @Nullable boolean value) {
+  @ReactProp(name = "onPointerEnter")
+  public void setPointerEnter(@NonNull T view, boolean value) {
     view.setTag(R.id.pointer_enter, value);
   }
 
-  @ReactProp(name = "pointerleave")
-  public void setPointerLeave(@NonNull T view, @Nullable boolean value) {
+  @ReactProp(name = "onPointerLeave")
+  public void setPointerLeave(@NonNull T view, boolean value) {
     view.setTag(R.id.pointer_leave, value);
   }
 
-  @ReactProp(name = "pointermove")
-  public void setPointerMove(@NonNull T view, @Nullable boolean value) {
+  @ReactProp(name = "onPointerMove")
+  public void setPointerMove(@NonNull T view, boolean value) {
     view.setTag(R.id.pointer_move, value);
   }
+
+  @ReactProp(name = "onMoveShouldSetResponder")
+  public void setMoveShouldSetResponder(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onMoveShouldSetResponderCapture")
+  public void setMoveShouldSetResponderCapture(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onStartShouldSetResponder")
+  public void setStartShouldSetResponder(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onStartShouldSetResponderCapture")
+  public void setStartShouldSetResponderCapture(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onResponderGrant")
+  public void setResponderGrant(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onResponderReject")
+  public void setResponderReject(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onResponderStart")
+  public void setResponderStart(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onResponderEnd")
+  public void setResponderEnd(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onResponderRelease")
+  public void setResponderRelease(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onResponderMove")
+  public void setResponderMove(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onResponderTerminate")
+  public void setResponderTerminate(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onResponderTerminationRequest")
+  public void setResponderTerminationRequest(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onShouldBlockNativeResponder")
+  public void setShouldBlockNativeResponder(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onTouchStart")
+  public void setTouchStart(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onTouchMove")
+  public void setTouchMove(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onTouchEnd")
+  public void setTouchEnd(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
+
+  @ReactProp(name = "onTouchCancel")
+  public void setTouchCancel(@NonNull T view, boolean value) {
+    // no-op, handled by JSResponder
+  }
 }

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

@@ -808,19 +808,19 @@ public void setShouldNotifyOnLayout(boolean shouldNotifyOnLayout) {
     super.setShouldNotifyOnLayout(shouldNotifyOnLayout);
   }
 
-  @ReactProp(name = "pointerenter")
+  @ReactProp(name = "onPointerEnter")
   public void setShouldNotifyPointerEnter(boolean value) {
     // This method exists to inject Native View configs in RN Android VR
     // DO NOTHING
   }
 
-  @ReactProp(name = "pointerleave")
+  @ReactProp(name = "onPointerLeave")
   public void setShouldNotifyPointerLeave(boolean value) {
     // This method exists to inject Native View configs in RN Android VR
     // DO NOTHING
   }
 
-  @ReactProp(name = "pointermove")
+  @ReactProp(name = "onPointerMove")
   public void setShouldNotifyPointerMove(boolean value) {
     // This method exists to inject Native View configs in RN Android VR
     // DO NOTHING

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

@@ -59,9 +59,9 @@
     return MapBuilder.builder()
         .put("topContentSizeChange", MapBuilder.of(rn, "onContentSizeChange"))
         .put("topLayout", MapBuilder.of(rn, "onLayout"))
-        .put("topPointerEnter", MapBuilder.of(rn, "pointerenter"))
-        .put("topPointerLeave", MapBuilder.of(rn, "pointerleave"))
-        .put("topPointerMove", MapBuilder.of(rn, "pointermove"))
+        .put("topPointerEnter", MapBuilder.of(rn, "onPointerEnter"))
+        .put("topPointerLeave", MapBuilder.of(rn, "onPointerLeave"))
+        .put("topPointerMove", MapBuilder.of(rn, "onPointerMove"))
         .put("topLoadingError", MapBuilder.of(rn, "onLoadingError"))
         .put("topLoadingFinish", MapBuilder.of(rn, "onLoadingFinish"))
         .put("topLoadingStart", MapBuilder.of(rn, "onLoadingStart"))

ReactCommon/react/renderer/components/view/ViewProps.cpp

@@ -125,24 +125,7 @@ ViewProps::ViewProps(
           "onLayout",
           sourceProps.onLayout,
           {})),
-      pointerEnter(convertRawProp(
-          context,
-          rawProps,
-          "pointerenter",
-          sourceProps.pointerEnter,
-          {})),
-      pointerLeave(convertRawProp(
-          context,
-          rawProps,
-          "pointerleave",
-          sourceProps.pointerLeave,
-          {})),
-      pointerMove(convertRawProp(
-          context,
-          rawProps,
-          "pointermove",
-          sourceProps.pointerMove,
-          {})),
+      events(convertRawProp(context, rawProps, sourceProps.events, {})),
       collapsable(convertRawProp(
           context,
           rawProps,

ReactCommon/react/renderer/components/view/ViewProps.h

@@ -61,11 +61,7 @@ class ViewProps : public YogaStylableProps, public AccessibilityProps {
   EdgeInsets hitSlop{};
   bool onLayout{};
 
-  bool pointerEnter{};
-
-  bool pointerLeave{};
-
-  bool pointerMove{};
+  ViewEvents events{};
 
   bool collapsable{true};
 

ReactCommon/react/renderer/components/view/ViewShadowNode.cpp

@@ -48,8 +48,8 @@ void ViewShadowNode::initialize() noexcept {
 
   bool formsView = formsStackingContext ||
       isColorMeaningful(viewProps.backgroundColor) ||
-      isColorMeaningful(viewProps.foregroundColor) || viewProps.pointerEnter ||
-      viewProps.pointerLeave || viewProps.pointerMove ||
+      isColorMeaningful(viewProps.foregroundColor) ||
+      viewProps.events.bits.any() ||
       !(viewProps.yogaStyle.border() == YGStyle::Edges{}) ||
       !viewProps.testId.empty();
 

ReactCommon/react/renderer/components/view/primitives.h

@@ -11,13 +11,54 @@
 #include <react/renderer/graphics/Color.h>
 #include <react/renderer/graphics/Geometry.h>
 #include <array>
+#include <bitset>
 #include <cmath>
 
 namespace facebook {
 namespace react {
 
 enum class PointerEventsMode { Auto, None, BoxNone, BoxOnly };
 
+struct ViewEvents {
+  std::bitset<32> bits{};
+
+  enum class Offset : std::size_t {
+    // Pointer events
+    PointerEnter = 0,
+    PointerMove = 1,
+    PointerLeave = 2,
+
+    // PanResponder callbacks
+    MoveShouldSetResponder = 3,
+    MoveShouldSetResponderCapture = 4,
+    StartShouldSetResponder = 5,
+    StartShouldSetResponderCapture = 6,
+    ResponderGrant = 7,
+    ResponderReject = 8,
+    ResponderStart = 9,
+    ResponderEnd = 10,
+    ResponderRelease = 11,
+    ResponderMove = 12,
+    ResponderTerminate = 13,
+    ResponderTerminationRequest = 14,
+    ShouldBlockNativeResponder = 15,
+
+    // Touch events
+    TouchStart = 16,
+    TouchMove = 17,
+    TouchEnd = 18,
+    TouchCancel = 19,
+  };
+
+  constexpr bool operator[](const Offset offset) const {
+    return bits[static_cast<std::size_t>(offset)];
+  }
+
+  std::bitset<32>::reference operator[](const Offset offset) {
+    return bits[static_cast<std::size_t>(offset)];
+  }
+};
+
 enum class BackfaceVisibility { Auto, Visible, Hidden };
 
 enum class BorderStyle { Solid, Dotted, Dashed };