ScrollableList: Add option to disable loading more items when scrolling to bottom

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

app/soapbox/actions/settings.js

@@ -32,6 +32,7 @@ export const defaultSettings = ImmutableMap({
   explanationBox: true,
   otpEnabled: false,
   autoloadTimelines: true,
+  autoloadMore: true,
 
   systemFont: false,
   dyslexicFont: false,

app/soapbox/components/scrollable_list.js

@@ -1,5 +1,6 @@
 import React, { PureComponent } from 'react';
 import PropTypes from 'prop-types';
+import { connect } from 'react-redux';
 import IntersectionObserverArticleContainer from '../containers/intersection_observer_article_container';
 import LoadMore from './load_more';
 import MoreFollows from './more_follows';
@@ -7,10 +8,20 @@ import IntersectionObserverWrapper from '../features/ui/util/intersection_observ
 import { throttle } from 'lodash';
 import { List as ImmutableList } from 'immutable';
 import LoadingIndicator from './loading_indicator';
+import { getSettings } from 'soapbox/actions/settings';
 
 const MOUSE_IDLE_DELAY = 300;
 
-export default class ScrollableList extends PureComponent {
+const mapStateToProps = state => {
+  const settings = getSettings(state);
+
+  return {
+    autoload: settings.get('autoloadMore'),
+  };
+};
+
+export default @connect(mapStateToProps)
+class ScrollableList extends PureComponent {
 
   static contextTypes = {
     router: PropTypes.object,
@@ -31,6 +42,7 @@ export default class ScrollableList extends PureComponent {
     onScroll: PropTypes.func,
     placeholderComponent: PropTypes.func,
     placeholderCount: PropTypes.number,
+    autoload: PropTypes.bool,
   };
 
   state = {
@@ -126,12 +138,14 @@ export default class ScrollableList extends PureComponent {
   }
 
   handleScroll = throttle(() => {
+    const { autoload } = this.props;
+
     if (this.window) {
       const { scrollTop, scrollHeight } = this.documentElement;
       const { innerHeight } = this.window;
       const offset = scrollHeight - scrollTop - innerHeight;
 
-      if (400 > offset && this.props.onLoadMore && this.props.hasMore && !this.props.isLoading) {
+      if (autoload && 400 > offset && this.props.onLoadMore && this.props.hasMore && !this.props.isLoading) {
         this.props.onLoadMore();
       }
 

app/soapbox/features/preferences/index.js

@@ -234,6 +234,10 @@ class Preferences extends ImmutablePureComponent {
               label={<FormattedMessage id='preferences.fields.autoload_timelines_label' defaultMessage='Automatically load new posts when scrolled to the top of the page' />}
               path={['autoloadTimelines']}
             />
+            <SettingsCheckbox
+              label={<FormattedMessage id='preferences.fields.autoload_more_label' defaultMessage='Automatically load more items when scrolled to the bottom of the page' />}
+              path={['autoloadMore']}
+            />
             <SettingsCheckbox
               label={<FormattedMessage id='preferences.fields.underline_links_label' defaultMessage='Always underline links in posts' />}
               path={['underlineLinks']}