Revert "Issue #2725259 by sardara, andrewmacpherson, claudiu.cristea, tedbow, alwaysworking, droplet, techmsi, kwoxer, xjm, alexpott, @catch, @cilefen, @cottser, @lauriii: [regression] Table Drag handles no longer respond to up/down arrow keys"

This reverts commit 62e67b889396e715176721708e853d434d535b10.

Author: lauriii

misc/tabledrag.es6.js

@@ -558,14 +558,10 @@
         case 38:
         // Safari up arrow.
         case 63232: {
-          let $previousRow = $(self.rowObject.element)
-            .prev('tr')
-            .eq(0);
+          let $previousRow = $(self.rowObject.element).prev('tr:first-of-type');
           let previousRow = $previousRow.get(0);
           while (previousRow && $previousRow.is(':hidden')) {
-            $previousRow = $(previousRow)
-              .prev('tr')
-              .eq(0);
+            $previousRow = $(previousRow).prev('tr:first-of-type');
             previousRow = $previousRow.get(0);
           }
           if (previousRow) {
@@ -581,9 +577,7 @@
                 previousRow &&
                 $previousRow.find('.js-indentation').length
               ) {
-                $previousRow = $(previousRow)
-                  .prev('tr')
-                  .eq(0);
+                $previousRow = $(previousRow).prev('tr:first-of-type');
                 previousRow = $previousRow.get(0);
                 groupHeight += $previousRow.is(':hidden')
                   ? 0
@@ -624,13 +618,10 @@
         case 63233: {
           let $nextRow = $(self.rowObject.group)
             .eq(-1)
-            .next('tr')
-            .eq(0);
+            .next('tr:first-of-type');
           let nextRow = $nextRow.get(0);
           while (nextRow && $nextRow.is(':hidden')) {
-            $nextRow = $(nextRow)
-              .next('tr')
-              .eq(0);
+            $nextRow = $(nextRow).next('tr:first-of-type');
             nextRow = $nextRow.get(0);
           }
           if (nextRow) {

misc/tabledrag.js

@@ -285,10 +285,10 @@ var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol
         case 38:
         case 63232:
           {
-            var $previousRow = $(self.rowObject.element).prev('tr').eq(0);
+            var $previousRow = $(self.rowObject.element).prev('tr:first-of-type');
             var previousRow = $previousRow.get(0);
             while (previousRow && $previousRow.is(':hidden')) {
-              $previousRow = $(previousRow).prev('tr').eq(0);
+              $previousRow = $(previousRow).prev('tr:first-of-type');
               previousRow = $previousRow.get(0);
             }
             if (previousRow) {
@@ -299,7 +299,7 @@ var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol
               if ($(item).is('.tabledrag-root')) {
                 groupHeight = 0;
                 while (previousRow && $previousRow.find('.js-indentation').length) {
-                  $previousRow = $(previousRow).prev('tr').eq(0);
+                  $previousRow = $(previousRow).prev('tr:first-of-type');
                   previousRow = $previousRow.get(0);
                   groupHeight += $previousRow.is(':hidden') ? 0 : previousRow.offsetHeight;
                 }
@@ -329,10 +329,10 @@ var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol
         case 40:
         case 63233:
           {
-            var $nextRow = $(self.rowObject.group).eq(-1).next('tr').eq(0);
+            var $nextRow = $(self.rowObject.group).eq(-1).next('tr:first-of-type');
             var nextRow = $nextRow.get(0);
             while (nextRow && $nextRow.is(':hidden')) {
-              $nextRow = $(nextRow).next('tr').eq(0);
+              $nextRow = $(nextRow).next('tr:first-of-type');
               nextRow = $nextRow.get(0);
             }
             if (nextRow) {