Don't dismiss keyboard when tapping another text input

Summary:
When using text inputs inside a ScrollView with `keyboardShouldPersistTaps=false` (default behavior) tapping another text input dismisses the keyboard instead of keeping it open and focusing the new text input which I think is the better and expected behavior.

See #10628 for more discussion about that. Note that this affects nothing but the behavior with text inputs unlike #10628.

cc satya164 MaxLap ericvicenti
Closes #10887

Differential Revision: D4178474

Pulled By: ericvicenti

fbshipit-source-id: 0c62ea2fac0017d559d1f8674b0a686a5e1b3d2d

Libraries/Components/ScrollResponder.js

@@ -19,6 +19,7 @@ var Subscribable = require('Subscribable');
 var TextInputState = require('TextInputState');
 var UIManager = require('UIManager');
 
+var { getInstanceFromNode } = require('ReactNativeComponentTree');
 var { ScrollViewManager } = require('NativeModules');
 
 var invariant = require('fbjs/lib/invariant');
@@ -112,6 +113,15 @@ type State = {
 };
 type Event = Object;
 
+function isTagInstanceOfTextInput(tag) {
+  var instance = getInstanceFromNode(tag);
+  return instance && instance.viewConfig && (
+    instance.viewConfig.uiViewClassName === 'AndroidTextInput' ||
+    instance.viewConfig.uiViewClassName === 'RCTTextView' ||
+    instance.viewConfig.uiViewClassName === 'RCTTextField'
+  );
+}
+
 var ScrollResponderMixin = {
   mixins: [Subscribable.Mixin],
   scrollResponderMixinGetInitialState: function(): State {
@@ -172,7 +182,7 @@ var ScrollResponderMixin = {
    * that *doesn't* give priority to nested views (hence the capture phase):
    *
    * - Currently animating.
-   * - Tapping anywhere that is not the focused input, while the keyboard is
+   * - Tapping anywhere that is not a text input, while the keyboard is
    *   up (which should dismiss the keyboard).
    *
    * Invoke this from an `onStartShouldSetResponderCapture` event.
@@ -182,7 +192,7 @@ var ScrollResponderMixin = {
     var currentlyFocusedTextInput = TextInputState.currentlyFocusedField();
     if (!this.props.keyboardShouldPersistTaps &&
       currentlyFocusedTextInput != null &&
-      e.target !== currentlyFocusedTextInput) {
+      !isTagInstanceOfTextInput(e.target)) {
       return true;
     }
     return this.scrollResponderIsAnimating();

Libraries/ReactNative/requireNativeComponent.js

@@ -101,7 +101,7 @@ function requireNativeComponent(
   return createReactNativeComponentClass(viewConfig);
 }
 
-var TypeToDifferMap = {
+const TypeToDifferMap = {
   // iOS Types
   CATransform3D: matricesDiffer,
   CGPoint: pointsDiffer,
@@ -115,7 +115,7 @@ function processColorArray(colors: []): [] {
   return colors && colors.map(processColor);
 }
 
-var TypeToProcessorMap = {
+const TypeToProcessorMap = {
   // iOS Types
   CGColor: processColor,
   CGColorArray: processColorArray,

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

@@ -200,6 +200,18 @@ private static boolean isTransformedTouchPointInView(
       float eventCoords[], View view) {
     PointerEvents pointerEvents = view instanceof ReactPointerEventsView ?
         ((ReactPointerEventsView) view).getPointerEvents() : PointerEvents.AUTO;
+
+    // Views that are disabled should never be the target of pointer events. However, their children
+    // can be because some views (SwipeRefreshLayout) use enabled but still have children that can
+    // be valid targets.
+    if (!view.isEnabled()) {
+      if (pointerEvents == PointerEvents.AUTO) {
+        pointerEvents = PointerEvents.BOX_NONE;
+      } else if (pointerEvents == PointerEvents.BOX_ONLY) {
+        pointerEvents = PointerEvents.NONE;
+      }
+    }
+
     if (pointerEvents == PointerEvents.NONE) {
       // This view and its children can't be the target
       return null;
@@ -209,7 +221,7 @@ private static boolean isTransformedTouchPointInView(
       return view;
 
     } else if (pointerEvents == PointerEvents.BOX_NONE) {
-      // This view can't be the target, but its children might
+      // This view can't be the target, but its children might.
       if (view instanceof ViewGroup) {
         View targetView = findTouchTargetView(eventCoords, (ViewGroup) view);
         if (targetView != view) {