From 159f4774bdb815493fbc50b263715733ee8e878d Mon Sep 17 00:00:00 2001
From: Kowaio <guillaume.siorak@gmail.com>
Date: Mon, 18 Mar 2019 14:07:13 +0100
Subject: [PATCH] add scroll to top feature

---
 SuperGridSectionList.js | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/SuperGridSectionList.js b/SuperGridSectionList.js
index d66b445..5e56305 100644
--- a/SuperGridSectionList.js
+++ b/SuperGridSectionList.js
@@ -26,7 +26,7 @@ class SuperGridSectionList extends Component {
     }
   }
 
-  
+
   onLayout(e) {
     const { staticDimension, onLayout } = this.props;
     if (!staticDimension) {
@@ -42,6 +42,17 @@ class SuperGridSectionList extends Component {
     }
   }
 
+  scrollToTop = () => {
+    if (this.refs.list) {
+      this.refs.list.scrollToLocation({
+        sectionIndex: 0,
+        itemIndex: 0,
+        viewPosition: 0,
+        animated: true,
+      });
+    }
+  }
+
   getDimensions(lvDimension, itemDim) {
     const { itemWidth, spacing, fixed, staticDimension } = this.props;
     let itemDimension = itemDim || this.props.itemDimension;
@@ -111,12 +122,12 @@ class SuperGridSectionList extends Component {
     const { itemsPerRow } = this.state;
 
     //Deep copy, so that re-renders and chunkArray functions don't affect the actual items object
-    let sectionsCopy = cloneDeep(sections); 
+    let sectionsCopy = cloneDeep(sections);
 
     for (sectionsPair of sectionsCopy){
 
       //Going through all the sections in sectionsCopy, and dividing their 'data' fields into smaller 'chunked' arrays to represent rows
-      const chunked = chunkArray(sectionsPair.data, itemsPerRow); 
+      const chunked = chunkArray(sectionsPair.data, itemsPerRow);
 
       //Now adding metadata to these rows
       const rows = chunked.map((r, i) => {
@@ -131,6 +142,7 @@ class SuperGridSectionList extends Component {
 
     return (
       <SectionList
+        ref="list"
         sections={sectionsCopy}
         renderSectionHeader = {renderSectionHeader}
         renderItem={this.renderHorizontalRow}