When selecting a toot via keyboard, ensure it is scrolled into view (#10593)

1 files changed, 10 insertions, 4 deletions

diff --git a/app/javascript/mastodon/components/status_list.js b/app/javascript/mastodon/components/status_list.js
index e417f9a2b..745e6422d 100644
--- a/app/javascript/mastodon/components/status_list.js
+++ b/app/javascript/mastodon/components/status_list.js
@@ -46,22 +46,28 @@ export default class StatusList extends ImmutablePureComponent {
 
   handleMoveUp = (id, featured) => {
     const elementIndex = this.getCurrentStatusIndex(id, featured) - 1;
-    this._selectChild(elementIndex);
+    this._selectChild(elementIndex, true);
   }
 
   handleMoveDown = (id, featured) => {
     const elementIndex = this.getCurrentStatusIndex(id, featured) + 1;
-    this._selectChild(elementIndex);
+    this._selectChild(elementIndex, false);
   }
 
   handleLoadOlder = debounce(() => {
     this.props.onLoadMore(this.props.statusIds.size > 0 ? this.props.statusIds.last() : undefined);
   }, 300, { leading: true })
 
-  _selectChild (index) {
-    const element = this.node.node.querySelector(`article:nth-of-type(${index + 1}) .focusable`);
+  _selectChild (index, align_top) {
+    const container = this.node.node;
+    const element = container.querySelector(`article:nth-of-type(${index + 1}) .focusable`);
 
     if (element) {
+      if (align_top && container.scrollTop > element.offsetTop) {
+        element.scrollIntoView(true);
+      } else if (!align_top && container.scrollTop + container.clientHeight < element.offsetTop + element.offsetHeight) {
+        element.scrollIntoView(false);
+      }
       element.focus();
     }
   }