From 553cc2824040ba0b745644eb4633840129ffc13b Mon Sep 17 00:00:00 2001
From: Thibaut Girka <thib@sitedethib.com>
Date: Sat, 5 May 2018 17:18:25 +0200
Subject: [PATCH] [Glitch] Prevent timeline from moving when cursor is hovering
 over it

Port 58852695c8ec490239ed3812f82971f8c1e6c172 to glitch-soc
---
 .../flavours/glitch/components/scrollable_list.js   | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/app/javascript/flavours/glitch/components/scrollable_list.js b/app/javascript/flavours/glitch/components/scrollable_list.js
index df3ace4c19..56e91f8642 100644
--- a/app/javascript/flavours/glitch/components/scrollable_list.js
+++ b/app/javascript/flavours/glitch/components/scrollable_list.js
@@ -35,6 +35,7 @@ export default class ScrollableList extends PureComponent {
 
   state = {
     fullscreen: null,
+    mouseOver: false,
   };
 
   intersectionObserverWrapper = new IntersectionObserverWrapper();
@@ -85,7 +86,7 @@ export default class ScrollableList extends PureComponent {
     const someItemInserted = React.Children.count(prevProps.children) > 0 &&
       React.Children.count(prevProps.children) < React.Children.count(this.props.children) &&
       this.getFirstChildKey(prevProps) !== this.getFirstChildKey(this.props);
-    if (someItemInserted && this.node.scrollTop > 0) {
+    if (someItemInserted && this.node.scrollTop > 0 || this.state.mouseOver) {
       return this.node.scrollHeight - this.node.scrollTop;
     } else {
       return null;
@@ -147,6 +148,14 @@ export default class ScrollableList extends PureComponent {
     this.props.onScrollToBottom();
   }
 
+  handleMouseEnter = () => {
+    this.setState({ mouseOver: true });
+  }
+
+  handleMouseLeave = () => {
+    this.setState({ mouseOver: false });
+  }
+
   render () {
     const { children, scrollKey, trackScroll, shouldUpdateScroll, isLoading, hasMore, prepend, emptyMessage } = this.props;
     const { fullscreen } = this.state;
@@ -157,7 +166,7 @@ export default class ScrollableList extends PureComponent {
 
     if (isLoading || childrenCount > 0 || !emptyMessage) {
       scrollableArea = (
-        <div className={classNames('scrollable', { fullscreen })} ref={this.setRef}>
+        <div className={classNames('scrollable', { fullscreen })} ref={this.setRef} onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave}>
           <div role='feed' className='item-list'>
             {prepend}