From 5d16771c60f08241d1ec95e9840a22d66985ebad Mon Sep 17 00:00:00 2001
From: matiassalles99 <matiassalles99@gmail.com>
Date: Tue, 5 Apr 2022 15:45:08 -0300
Subject: [PATCH] add flash scroll indicators

---
 index.d.ts                    | 15 ++++++++-------
 lib/KeyboardAwareHOC.js       | 16 +++++++++++++---
 lib/KeyboardAwareInterface.js |  1 +
 3 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/index.d.ts b/index.d.ts
index bf03b269..5cbb3bfe 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -145,13 +145,13 @@ interface KeyboardAwareProps {
 
 interface KeyboardAwareScrollViewProps
   extends KeyboardAwareProps,
-    ScrollViewProps {}
+  ScrollViewProps { }
 interface KeyboardAwareFlatListProps<ItemT>
   extends KeyboardAwareProps,
-    FlatListProps<ItemT> {}
+  FlatListProps<ItemT> { }
 interface KeyboardAwareSectionListProps<ItemT>
   extends KeyboardAwareProps,
-    SectionListProps<ItemT> {}
+  SectionListProps<ItemT> { }
 
 interface KeyboardAwareState {
   keyboardSpace: number
@@ -167,18 +167,19 @@ declare class ScrollableComponent<P, S> extends React.Component<P, S> {
     extraHeight?: number,
     keyboardOpeningTime?: number
   ) => void
+  flashScrollIndicators: () => void
 }
 
-export class KeyboardAwareMixin {}
+export class KeyboardAwareMixin { }
 export class KeyboardAwareScrollView extends ScrollableComponent<
   KeyboardAwareScrollViewProps,
   KeyboardAwareState
-> {}
+> { }
 export class KeyboardAwareFlatList extends ScrollableComponent<
   KeyboardAwareFlatListProps<any>,
   KeyboardAwareState
-> {}
+> { }
 export class KeyboardAwareSectionList extends ScrollableComponent<
   KeyboardAwareSectionListProps<any>,
   KeyboardAwareState
-> {}
+> { }
diff --git a/lib/KeyboardAwareHOC.js b/lib/KeyboardAwareHOC.js
index 03f46af5..05fa46f2 100644
--- a/lib/KeyboardAwareHOC.js
+++ b/lib/KeyboardAwareHOC.js
@@ -303,6 +303,16 @@ function KeyboardAwareHOC(
       this.scrollToPosition(0, this.position.y + extraHeight, true)
     }
 
+    flashScrollIndicators = () => {
+      const responder = this.getScrollResponder()
+      if (!responder) {
+        return
+      }
+      if (responder.flashScrollIndicators) {
+        responder.flashScrollIndicators()
+      }
+    }
+
     /**
      * @param keyboardOpeningTime: takes a different keyboardOpeningTime in consideration.
      * @param extraHeight: takes an extra height in consideration.
@@ -389,7 +399,7 @@ function KeyboardAwareHOC(
           keyboardSpace -= _KAM_DEFAULT_TAB_BAR_HEIGHT
         }
         this.setState({ keyboardSpace })
-        const currentlyFocusedField =  TextInput.State.currentlyFocusedInput ? findNodeHandle(TextInput.State.currentlyFocusedInput()) : TextInput.State.currentlyFocusedField()
+        const currentlyFocusedField = TextInput.State.currentlyFocusedInput ? findNodeHandle(TextInput.State.currentlyFocusedInput()) : TextInput.State.currentlyFocusedField()
         const responder = this.getScrollResponder()
         if (!currentlyFocusedField || !responder) {
           return
@@ -434,7 +444,7 @@ function KeyboardAwareHOC(
                     ) {
                       this.scrollForExtraHeightOnAndroid(
                         totalExtraHeight -
-                          (keyboardPosition - textInputBottomPosition)
+                        (keyboardPosition - textInputBottomPosition)
                       )
                     }
                   }
@@ -512,7 +522,7 @@ function KeyboardAwareHOC(
     }
 
     update = () => {
-      const currentlyFocusedField =  TextInput.State.currentlyFocusedInput ? findNodeHandle(TextInput.State.currentlyFocusedInput()) : TextInput.State.currentlyFocusedField()
+      const currentlyFocusedField = TextInput.State.currentlyFocusedInput ? findNodeHandle(TextInput.State.currentlyFocusedInput()) : TextInput.State.currentlyFocusedField()
       const responder = this.getScrollResponder()
 
       if (!currentlyFocusedField || !responder) {
diff --git a/lib/KeyboardAwareInterface.js b/lib/KeyboardAwareInterface.js
index 20fbcb49..4c23a877 100644
--- a/lib/KeyboardAwareInterface.js
+++ b/lib/KeyboardAwareInterface.js
@@ -10,4 +10,5 @@ export interface KeyboardAwareInterface {
     extraHeight: number,
     keyboardOpeningTime: number
   ) => void
+  flashScrollIndicators: () => void
 }