From: Naoki Kosaka <n.k@mail.yukimochi.net>
Date: Tue, 11 Jul 2017 17:56:45 +0000 (+0900)
Subject: Fix media modal prev button behavior. (#4158)
X-Git-Url: https://git.xn--scling-oua.cat.family/?a=commitdiff_plain;h=b21ab498f84b75288f20a7eb2c6e0ee223481674;p=mastodon.git

Fix media modal prev button behavior. (#4158)
---

diff --git a/app/javascript/mastodon/features/ui/components/media_modal.js b/app/javascript/mastodon/features/ui/components/media_modal.js
index 23f588669..d869fffa6 100644
--- a/app/javascript/mastodon/features/ui/components/media_modal.js
+++ b/app/javascript/mastodon/features/ui/components/media_modal.js
@@ -35,7 +35,7 @@ export default class MediaModal extends ImmutablePureComponent {
   }
 
   handlePrevClick = () => {
-    this.setState({ index: (this.getIndex() - 1) % this.props.media.size });
+    this.setState({ index: (this.props.media.size + this.getIndex() - 1) % this.props.media.size });
   }
 
   handleKeyUp = (e) => {