RN: View Type Refinement for Events

Summary:
Adds some missing props to the type definition for `View`.

Also, changed some of the callbacks to return `mixed`. (Sometime in the near future, we should align on this for event callbacks.)

Changelog:
[Changed] Revised View Event Callback Types

Reviewed By: TheSavior

Differential Revision: D18278877

fbshipit-source-id: a36d5c1c9b9aed6718bd2abb024700a08a9deaeb

Libraries/Components/View/ViewPropTypes.js

@@ -10,7 +10,14 @@
 
 'use strict';
 
-import type {PressEvent, Layout, LayoutEvent} from '../../Types/CoreEventTypes';
+import type {
+  BlurEvent,
+  FocusEvent,
+  MouseEvent,
+  PressEvent,
+  Layout,
+  LayoutEvent,
+} from '../../Types/CoreEventTypes';
 import type {EdgeInsetsProp} from '../../StyleSheet/EdgeInsetsPropType';
 import type {Node} from 'react';
 import type {ViewStyleProp} from '../../StyleSheet/StyleSheet';
@@ -25,13 +32,18 @@ import type {
 export type ViewLayout = Layout;
 export type ViewLayoutEvent = LayoutEvent;
 
+type BubblingEventProps = $ReadOnly<{|
+  onBlur?: ?(event: BlurEvent) => mixed,
+  onFocus?: ?(event: FocusEvent) => mixed,
+|}>;
+
 type DirectEventProps = $ReadOnly<{|
   /**
    * When `accessible` is true, the system will try to invoke this function
    * when the user performs an accessibility custom action.
    *
    */
-  onAccessibilityAction?: ?(event: AccessibilityActionEvent) => void,
+  onAccessibilityAction?: ?(event: AccessibilityActionEvent) => mixed,
 
   /**
    * When `accessible` is true, the system will try to invoke this function
@@ -39,7 +51,7 @@ type DirectEventProps = $ReadOnly<{|
    *
    * See http://facebook.github.io/react-native/docs/view.html#onaccessibilitytap
    */
-  onAccessibilityTap?: ?() => void,
+  onAccessibilityTap?: ?() => mixed,
 
   /**
    * Invoked on mount and layout changes with:
@@ -60,7 +72,7 @@ type DirectEventProps = $ReadOnly<{|
    *
    * See http://facebook.github.io/react-native/docs/view.html#onmagictap
    */
-  onMagicTap?: ?() => void,
+  onMagicTap?: ?() => mixed,
 
   /**
    * When `accessible` is `true`, the system will invoke this function when the
@@ -68,7 +80,12 @@ type DirectEventProps = $ReadOnly<{|
    *
    * See http://facebook.github.io/react-native/docs/view.html#onaccessibilityescape
    */
-  onAccessibilityEscape?: ?() => void,
+  onAccessibilityEscape?: ?() => mixed,
+|}>;
+
+type MouseEventProps = $ReadOnly<{|
+  onMouseEnter?: (event: MouseEvent) => void,
+  onMouseLeave?: (event: MouseEvent) => void,
 |}>;
 
 type TouchEventProps = $ReadOnly<{|
@@ -279,7 +296,7 @@ type AndroidViewProps = $ReadOnly<{|
    *
    * @platform android
    */
-  hasTVPreferredFocus?: boolean,
+  hasTVPreferredFocus?: ?boolean,
 
   /**
    * TV next focus down (see documentation for the View component).
@@ -328,7 +345,7 @@ type AndroidViewProps = $ReadOnly<{|
    *
    * @platform android
    */
-  onClick?: () => void,
+  onClick?: ?(event: PressEvent) => mixed,
 |}>;
 
 type IOSViewProps = $ReadOnly<{|
@@ -371,8 +388,10 @@ type IOSViewProps = $ReadOnly<{|
 |}>;
 
 export type ViewProps = $ReadOnly<{|
+  ...BubblingEventProps,
   ...DirectEventProps,
   ...GestureResponderEventProps,
+  ...MouseEventProps,
   ...TouchEventProps,
   ...AndroidViewProps,
   ...IOSViewProps,