Extend AccessibilityInfo.sendAccessibilityEvent to support 'click' event for Android

Summary:
This diff extends AccessibilityInfo.sendAccessibilityEvent to support 'click' event on RN Android

changelog: [internal] internal

Reviewed By: kacieb

Differential Revision: D27060395

fbshipit-source-id: 5bf7479d72efb66c3a388fc3ea11990e285ca054

Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js

@@ -26,7 +26,7 @@ type AccessibilityEventDefinitions = {
   change: [boolean],
 };
 
-type AccessibilityEventTypes = 'focus';
+type AccessibilityEventTypes = 'focus' | 'click';
 
 const _subscriptions = new Map();
 
@@ -162,7 +162,12 @@ const AccessibilityInfo = {
     eventType: AccessibilityEventTypes,
   ) {
     // route through React renderer to distinguish between Fabric and non-Fabric handles
-    sendAccessibilityEvent(handle, eventType);
+    // iOS only supports 'focus' event types
+    if (eventType === 'focus') {
+      sendAccessibilityEvent(handle, eventType);
+    } else if (eventType === 'click') {
+      // Do nothing!
+    }
   },
 
   /**

Libraries/Components/AccessibilityInfo/AccessibilityInfo.ios.js

@@ -43,7 +43,8 @@ type AccessibilityEventDefinitions = {
   ],
 };
 
-type AccessibilityEventTypes = 'focus';
+// 'click' event type is not implemented in iOS. It's declared here to avoid flow type errors
+type AccessibilityEventTypes = 'focus' | 'click';
 
 const _subscriptions = new Map();
 

Libraries/Components/AccessibilityInfo/legacySendAccessibilityEvent.android.js

@@ -24,6 +24,12 @@ function legacySendAccessibilityEvent(
       UIManager.getConstants().AccessibilityEventTypes.typeViewFocused,
     );
   }
+  if (eventType === 'click') {
+    UIManager.sendAccessibilityEvent(
+      reactTag,
+      UIManager.getConstants().AccessibilityEventTypes.typeViewClicked,
+    );
+  }
 }
 
 module.exports = legacySendAccessibilityEvent;