Various fixes to scrollable lists and media gallery (#9501)

* Always use the scrollable class for the ScrollList component

Fixes #9499 as well as empty timelines' scrollbar “blinking”
between loading state and empty state.

* Do not display empty message when the list is known to have more elements

Fixes #9500

* Fix LoadMore usage in account media gallery

(Even though that codepath is probably never actually used…)

* Make account media gallery more consistent with account timeline

Fixes #9498

Display “load more” more consistently, add a loading indicator on first load.

* Fix “load more” button when no data has been fetched

1 files changed, 13 insertions, 6 deletions

diff --git a/app/javascript/mastodon/features/account_gallery/index.js b/app/javascript/mastodon/features/account_gallery/index.js
index 32cb5ebdc..0d66868ed 100644
--- a/app/javascript/mastodon/features/account_gallery/index.js
+++ b/app/javascript/mastodon/features/account_gallery/index.js
@@ -36,7 +36,7 @@ class LoadMoreMedia extends ImmutablePureComponent {
     return (
       <LoadMore
         disabled={this.props.disabled}
-        onLoadMore={this.handleLoadMore}
+        onClick={this.handleLoadMore}
       />
     );
   }
@@ -68,7 +68,7 @@ class AccountGallery extends ImmutablePureComponent {
 
   handleScrollToBottom = () => {
     if (this.props.hasMore) {
-      this.handleLoadMore(this.props.medias.last().getIn(['status', 'id']));
+      this.handleLoadMore(this.props.medias.size > 0 ? this.props.medias.last().getIn(['status', 'id']) : undefined);
     }
   }
 
@@ -103,8 +103,8 @@ class AccountGallery extends ImmutablePureComponent {
       );
     }
 
-    if (!isLoading && medias.size > 0 && hasMore) {
-      loadOlder = <LoadMore onClick={this.handleLoadOlder} />;
+    if (hasMore) {
+      loadOlder = <LoadMore visible={!isLoading} onClick={this.handleLoadOlder} />;
     }
 
     return (
@@ -112,14 +112,15 @@ class AccountGallery extends ImmutablePureComponent {
         <ColumnBackButton />
 
         <ScrollContainer scrollKey='account_gallery' shouldUpdateScroll={shouldUpdateScroll}>
-          <div className='scrollable' onScroll={this.handleScroll}>
+          <div className='scrollable scrollable--flex' onScroll={this.handleScroll}>
             <HeaderContainer accountId={this.props.params.accountId} />
 
-            <div className='account-gallery__container'>
+            <div role='feed' className='account-gallery__container'>
               {medias.map((media, index) => media === null ? (
                 <LoadMoreMedia
                   key={'more:' + medias.getIn(index + 1, 'id')}
                   maxId={index > 0 ? medias.getIn(index - 1, 'id') : null}
+                  onLoadMore={this.handleLoadMore}
                 />
               ) : (
                 <MediaItem
@@ -129,6 +130,12 @@ class AccountGallery extends ImmutablePureComponent {
               ))}
               {loadOlder}
             </div>
+
+            {isLoading && medias.size === 0 && (
+              <div className='scrollable__append'>
+                <LoadingIndicator />
+              </div>
+            )}
           </div>
         </ScrollContainer>
       </Column>