From 5a7b6e6a065d216fd6140433db2211682131f28e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?marcin=20miko=C5=82ajczak?= <git@mkljczk.pl>
Date: Mon, 30 Aug 2021 21:24:34 +0200
Subject: [PATCH] Trap Tab key in emoji selector
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>
---
 app/soapbox/components/emoji_selector.js | 33 ++++++++++++++++++------
 1 file changed, 25 insertions(+), 8 deletions(-)

diff --git a/app/soapbox/components/emoji_selector.js b/app/soapbox/components/emoji_selector.js
index 572f63a86..b47166228 100644
--- a/app/soapbox/components/emoji_selector.js
+++ b/app/soapbox/components/emoji_selector.js
@@ -35,21 +35,38 @@ class EmojiSelector extends ImmutablePureComponent {
     }
   }
 
-  handleKeyUp = i => e => {
+  _selectPreviousEmoji = i => {
+    if (i !== 0) {
+      this.node.querySelector(`.emoji-react-selector__emoji:nth-child(${i})`).focus();
+    } else {
+      this.node.querySelector('.emoji-react-selector__emoji:last-child').focus();
+    }
+  };
+
+  _selectNextEmoji = i => {
+    if (i !== this.props.allowedEmoji.size - 1) {
+      this.node.querySelector(`.emoji-react-selector__emoji:nth-child(${i + 2})`).focus();
+    } else {
+      this.node.querySelector('.emoji-react-selector__emoji:first-child').focus();
+    }
+  };
+
+  handleKeyDown = i => e => {
     const { onUnfocus } = this.props;
 
     switch (e.key) {
+    case 'Tab':
+      e.preventDefault();
+      if (e.shiftKey) this._selectPreviousEmoji(i);
+      else this._selectNextEmoji(i);
+      break;
     case 'Left':
     case 'ArrowLeft':
-      if (i !== 0) {
-        this.node.querySelector(`.emoji-react-selector__emoji:nth-child(${i})`).focus();
-      }
+      this._selectPreviousEmoji(i);
       break;
     case 'Right':
     case 'ArrowRight':
-      if (i !== this.props.allowedEmoji.size - 1) {
-        this.node.querySelector(`.emoji-react-selector__emoji:nth-child(${i + 2})`).focus();
-      }
+      this._selectNextEmoji(i);
       break;
     case 'Escape':
       onUnfocus();
@@ -94,7 +111,7 @@ class EmojiSelector extends ImmutablePureComponent {
               className='emoji-react-selector__emoji'
               dangerouslySetInnerHTML={{ __html: emojify(emoji) }}
               onClick={this.handleReact(emoji)}
-              onKeyUp={this.handleKeyUp(i, emoji)}
+              onKeyDown={this.handleKeyDown(i, emoji)}
               tabIndex={(visible || focused) ? 0 : -1}
             />
           ))}