comparison core/misc/tabledrag.js @ 0:c75dbcec494b

Initial commit from drush-created site

+/**
+* DO NOT EDIT THIS FILE.
+* See the following change record for more information,
+* https://www.drupal.org/node/2815083
+* @preserve
+**/
+
+(function ($, Drupal, drupalSettings) {
+  var showWeight = JSON.parse(localStorage.getItem('Drupal.tableDrag.showWeight'));
+
+  Drupal.behaviors.tableDrag = {
+    attach: function attach(context, settings) {
+      function initTableDrag(table, base) {
+        if (table.length) {
+          Drupal.tableDrag[base] = new Drupal.tableDrag(table[0], settings.tableDrag[base]);
+        }
+      }
+
+      Object.keys(settings.tableDrag || {}).forEach(function (base) {
+        initTableDrag($(context).find('#' + base).once('tabledrag'), base);
+      });
+    }
+  };
+
+  Drupal.tableDrag = function (table, tableSettings) {
+    var _this = this;
+
+    var self = this;
+    var $table = $(table);
+
+    this.$table = $(table);
+
+    this.table = table;
+
+    this.tableSettings = tableSettings;
+
+    this.dragObject = null;
+
+    this.rowObject = null;
+
+    this.oldRowElement = null;
+
+    this.oldY = 0;
+
+    this.changed = false;
+
+    this.maxDepth = 0;
+
+    this.rtl = $(this.table).css('direction') === 'rtl' ? -1 : 1;
+
+    this.striping = $(this.table).data('striping') === 1;
+
+    this.scrollSettings = { amount: 4, interval: 50, trigger: 70 };
+
+    this.scrollInterval = null;
+
+    this.scrollY = 0;
+
+    this.windowHeight = 0;
+
+    this.indentEnabled = false;
+    Object.keys(tableSettings || {}).forEach(function (group) {
+      Object.keys(tableSettings[group] || {}).forEach(function (n) {
+        if (tableSettings[group][n].relationship === 'parent') {
+          _this.indentEnabled = true;
+        }
+        if (tableSettings[group][n].limit > 0) {
+          _this.maxDepth = tableSettings[group][n].limit;
+        }
+      });
+    });
+    if (this.indentEnabled) {
+      this.indentCount = 1;
+
+      var indent = Drupal.theme('tableDragIndentation');
+      var testRow = $('<tr/>').addClass('draggable').appendTo(table);
+      var testCell = $('<td/>').appendTo(testRow).prepend(indent).prepend(indent);
+      var $indentation = testCell.find('.js-indentation');
+
+      this.indentAmount = $indentation.get(1).offsetLeft - $indentation.get(0).offsetLeft;
+      testRow.remove();
+    }
+
+    $table.find('> tr.draggable, > tbody > tr.draggable').each(function () {
+      self.makeDraggable(this);
+    });
+
+    $table.before($('<button type="button" class="link tabledrag-toggle-weight"></button>').attr('title', Drupal.t('Re-order rows by numerical weight instead of dragging.')).on('click', $.proxy(function (e) {
+      e.preventDefault();
+      this.toggleColumns();
+    }, this)).wrap('<div class="tabledrag-toggle-weight-wrapper"></div>').parent());
+
+    self.initColumns();
+
+    $(document).on('touchmove', function (event) {
+      return self.dragRow(event.originalEvent.touches[0], self);
+    });
+    $(document).on('touchend', function (event) {
+      return self.dropRow(event.originalEvent.touches[0], self);
+    });
+    $(document).on('mousemove pointermove', function (event) {
+      return self.dragRow(event, self);
+    });
+    $(document).on('mouseup pointerup', function (event) {
+      return self.dropRow(event, self);
+    });
+
+    $(window).on('storage', $.proxy(function (e) {
+      if (e.originalEvent.key === 'Drupal.tableDrag.showWeight') {
+        showWeight = JSON.parse(e.originalEvent.newValue);
+        this.displayColumns(showWeight);
+      }
+    }, this));
+  };
+
+  Drupal.tableDrag.prototype.initColumns = function () {
+    var _this2 = this;
+
+    var $table = this.$table;
+    var hidden = void 0;
+    var cell = void 0;
+    var columnIndex = void 0;
+    Object.keys(this.tableSettings || {}).forEach(function (group) {
+      for (var d in _this2.tableSettings[group]) {
+        if (_this2.tableSettings[group].hasOwnProperty(d)) {
+          var field = $table.find('.' + _this2.tableSettings[group][d].target).eq(0);
+          if (field.length && _this2.tableSettings[group][d].hidden) {
+            hidden = _this2.tableSettings[group][d].hidden;
+            cell = field.closest('td');
+            break;
+          }
+        }
+      }
+
+      if (hidden && cell[0]) {
+        columnIndex = cell.parent().find('> td').index(cell.get(0)) + 1;
+        $table.find('> thead > tr, > tbody > tr, > tr').each(_this2.addColspanClass(columnIndex));
+      }
+    });
+    this.displayColumns(showWeight);
+  };
+
+  Drupal.tableDrag.prototype.addColspanClass = function (columnIndex) {
+    return function () {
+      var $row = $(this);
+      var index = columnIndex;
+      var cells = $row.children();
+      var cell = void 0;
+      cells.each(function (n) {
+        if (n < index && this.colSpan && this.colSpan > 1) {
+          index -= this.colSpan - 1;
+        }
+      });
+      if (index > 0) {
+        cell = cells.filter(':nth-child(' + index + ')');
+        if (cell[0].colSpan && cell[0].colSpan > 1) {
+          cell.addClass('tabledrag-has-colspan');
+        } else {
+          cell.addClass('tabledrag-hide');
+        }
+      }
+    };
+  };
+
+  Drupal.tableDrag.prototype.displayColumns = function (displayWeight) {
+    if (displayWeight) {
+      this.showColumns();
+    } else {
+        this.hideColumns();
+      }
+
+    $('table').findOnce('tabledrag').trigger('columnschange', !!displayWeight);
+  };
+
+  Drupal.tableDrag.prototype.toggleColumns = function () {
+    showWeight = !showWeight;
+    this.displayColumns(showWeight);
+    if (showWeight) {
+      localStorage.setItem('Drupal.tableDrag.showWeight', showWeight);
+    } else {
+      localStorage.removeItem('Drupal.tableDrag.showWeight');
+    }
+  };
+
+  Drupal.tableDrag.prototype.hideColumns = function () {
+    var $tables = $('table').findOnce('tabledrag');
+
+    $tables.find('.tabledrag-hide').css('display', 'none');
+
+    $tables.find('.tabledrag-handle').css('display', '');
+
+    $tables.find('.tabledrag-has-colspan').each(function () {
+      this.colSpan = this.colSpan - 1;
+    });
+
+    $('.tabledrag-toggle-weight').text(Drupal.t('Show row weights'));
+  };
+
+  Drupal.tableDrag.prototype.showColumns = function () {
+    var $tables = $('table').findOnce('tabledrag');
+
+    $tables.find('.tabledrag-hide').css('display', '');
+
+    $tables.find('.tabledrag-handle').css('display', 'none');
+
+    $tables.find('.tabledrag-has-colspan').each(function () {
+      this.colSpan = this.colSpan + 1;
+    });
+
+    $('.tabledrag-toggle-weight').text(Drupal.t('Hide row weights'));
+  };
+
+  Drupal.tableDrag.prototype.rowSettings = function (group, row) {
+    var field = $(row).find('.' + group);
+    var tableSettingsGroup = this.tableSettings[group];
+
+    for (var delta in tableSettingsGroup) {
+      if (tableSettingsGroup.hasOwnProperty(delta)) {
+        var targetClass = tableSettingsGroup[delta].target;
+        if (field.is('.' + targetClass)) {
+          var rowSettings = {};
+
+          for (var n in tableSettingsGroup[delta]) {
+            if (tableSettingsGroup[delta].hasOwnProperty(n)) {
+              rowSettings[n] = tableSettingsGroup[delta][n];
+            }
+          }
+          return rowSettings;
+        }
+      }
+    }
+  };
+
+  Drupal.tableDrag.prototype.makeDraggable = function (item) {
+    var self = this;
+    var $item = $(item);
+
+    $item.find('td:first-of-type').find('a').addClass('menu-item__link');
+
+    var handle = $('<a href="#" class="tabledrag-handle"><div class="handle">&nbsp;</div></a>').attr('title', Drupal.t('Drag to re-order'));
+
+    var $indentationLast = $item.find('td:first-of-type').find('.js-indentation').eq(-1);
+    if ($indentationLast.length) {
+      $indentationLast.after(handle);
+
+      self.indentCount = Math.max($item.find('.js-indentation').length, self.indentCount);
+    } else {
+      $item.find('td').eq(0).prepend(handle);
+    }
+
+    handle.on('mousedown touchstart pointerdown', function (event) {
+      event.preventDefault();
+      if (event.originalEvent.type === 'touchstart') {
+        event = event.originalEvent.touches[0];
+      }
+      self.dragStart(event, self, item);
+    });
+
+    handle.on('click', function (e) {
+      e.preventDefault();
+    });
+
+    handle.on('focus', function () {
+      self.safeBlur = true;
+    });
+
+    handle.on('blur', function (event) {
+      if (self.rowObject && self.safeBlur) {
+        self.dropRow(event, self);
+      }
+    });
+
+    handle.on('keydown', function (event) {
+      if (event.keyCode !== 9 && !self.rowObject) {
+        self.rowObject = new self.row(item, 'keyboard', self.indentEnabled, self.maxDepth, true);
+      }
+
+      var keyChange = false;
+      var groupHeight = void 0;
+
+      switch (event.keyCode) {
+        case 37:
+        case 63234:
+          keyChange = true;
+          self.rowObject.indent(-1 * self.rtl);
+          break;
+
+        case 38:
+        case 63232:
+          {
+            var $previousRow = $(self.rowObject.element).prev('tr:first-of-type');
+            var previousRow = $previousRow.get(0);
+            while (previousRow && $previousRow.is(':hidden')) {
+              $previousRow = $(previousRow).prev('tr:first-of-type');
+              previousRow = $previousRow.get(0);
+            }
+            if (previousRow) {
+              self.safeBlur = false;
+              self.rowObject.direction = 'up';
+              keyChange = true;
+
+              if ($(item).is('.tabledrag-root')) {
+                groupHeight = 0;
+                while (previousRow && $previousRow.find('.js-indentation').length) {
+                  $previousRow = $(previousRow).prev('tr:first-of-type');
+                  previousRow = $previousRow.get(0);
+                  groupHeight += $previousRow.is(':hidden') ? 0 : previousRow.offsetHeight;
+                }
+                if (previousRow) {
+                  self.rowObject.swap('before', previousRow);
+
+                  window.scrollBy(0, -groupHeight);
+                }
+              } else if (self.table.tBodies[0].rows[0] !== previousRow || $previousRow.is('.draggable')) {
+                self.rowObject.swap('before', previousRow);
+                self.rowObject.interval = null;
+                self.rowObject.indent(0);
+                window.scrollBy(0, -parseInt(item.offsetHeight, 10));
+              }
+
+              handle.trigger('focus');
+            }
+            break;
+          }
+
+        case 39:
+        case 63235:
+          keyChange = true;
+          self.rowObject.indent(self.rtl);
+          break;
+
+        case 40:
+        case 63233:
+          {
+            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:first-of-type');
+              nextRow = $nextRow.get(0);
+            }
+            if (nextRow) {
+              self.safeBlur = false;
+              self.rowObject.direction = 'down';
+              keyChange = true;
+
+              if ($(item).is('.tabledrag-root')) {
+                groupHeight = 0;
+                var nextGroup = new self.row(nextRow, 'keyboard', self.indentEnabled, self.maxDepth, false);
+                if (nextGroup) {
+                  $(nextGroup.group).each(function () {
+                    groupHeight += $(this).is(':hidden') ? 0 : this.offsetHeight;
+                  });
+                  var nextGroupRow = $(nextGroup.group).eq(-1).get(0);
+                  self.rowObject.swap('after', nextGroupRow);
+
+                  window.scrollBy(0, parseInt(groupHeight, 10));
+                }
+              } else {
+                self.rowObject.swap('after', nextRow);
+                self.rowObject.interval = null;
+                self.rowObject.indent(0);
+                window.scrollBy(0, parseInt(item.offsetHeight, 10));
+              }
+
+              handle.trigger('focus');
+            }
+            break;
+          }
+      }
+
+      if (self.rowObject && self.rowObject.changed === true) {
+        $(item).addClass('drag');
+        if (self.oldRowElement) {
+          $(self.oldRowElement).removeClass('drag-previous');
+        }
+        self.oldRowElement = item;
+        if (self.striping === true) {
+          self.restripeTable();
+        }
+        self.onDrag();
+      }
+
+      if (keyChange) {
+        return false;
+      }
+    });
+
+    handle.on('keypress', function (event) {
+
+      switch (event.keyCode) {
+        case 37:
+        case 38:
+        case 39:
+        case 40:
+          return false;
+      }
+    });
+  };
+
+  Drupal.tableDrag.prototype.dragStart = function (event, self, item) {
+    self.dragObject = {};
+    self.dragObject.initOffset = self.getPointerOffset(item, event);
+    self.dragObject.initPointerCoords = self.pointerCoords(event);
+    if (self.indentEnabled) {
+      self.dragObject.indentPointerPos = self.dragObject.initPointerCoords;
+    }
+
+    if (self.rowObject) {
+      $(self.rowObject.element).find('a.tabledrag-handle').trigger('blur');
+    }
+
+    self.rowObject = new self.row(item, 'pointer', self.indentEnabled, self.maxDepth, true);
+
+    self.table.topY = $(self.table).offset().top;
+    self.table.bottomY = self.table.topY + self.table.offsetHeight;
+
+    $(item).addClass('drag');
+
+    $('body').addClass('drag');
+    if (self.oldRowElement) {
+      $(self.oldRowElement).removeClass('drag-previous');
+    }
+  };
+
+  Drupal.tableDrag.prototype.dragRow = function (event, self) {
+    if (self.dragObject) {
+      self.currentPointerCoords = self.pointerCoords(event);
+      var y = self.currentPointerCoords.y - self.dragObject.initOffset.y;
+      var x = self.currentPointerCoords.x - self.dragObject.initOffset.x;
+
+      if (y !== self.oldY) {
+        self.rowObject.direction = y > self.oldY ? 'down' : 'up';
+
+        self.oldY = y;
+
+        var scrollAmount = self.checkScroll(self.currentPointerCoords.y);
+
+        clearInterval(self.scrollInterval);
+
+        if (scrollAmount > 0 && self.rowObject.direction === 'down' || scrollAmount < 0 && self.rowObject.direction === 'up') {
+          self.setScroll(scrollAmount);
+        }
+
+        var currentRow = self.findDropTargetRow(x, y);
+        if (currentRow) {
+          if (self.rowObject.direction === 'down') {
+            self.rowObject.swap('after', currentRow, self);
+          } else {
+            self.rowObject.swap('before', currentRow, self);
+          }
+          if (self.striping === true) {
+            self.restripeTable();
+          }
+        }
+      }
+
+      if (self.indentEnabled) {
+        var xDiff = self.currentPointerCoords.x - self.dragObject.indentPointerPos.x;
+
+        var indentDiff = Math.round(xDiff / self.indentAmount);
+
+        var indentChange = self.rowObject.indent(indentDiff);
+
+        self.dragObject.indentPointerPos.x += self.indentAmount * indentChange * self.rtl;
+        self.indentCount = Math.max(self.indentCount, self.rowObject.indents);
+      }
+
+      return false;
+    }
+  };
+
+  Drupal.tableDrag.prototype.dropRow = function (event, self) {
+    var droppedRow = void 0;
+    var $droppedRow = void 0;
+
+    if (self.rowObject !== null) {
+      droppedRow = self.rowObject.element;
+      $droppedRow = $(droppedRow);
+
+      if (self.rowObject.changed === true) {
+        self.updateFields(droppedRow);
+
+        Object.keys(self.tableSettings || {}).forEach(function (group) {
+          var rowSettings = self.rowSettings(group, droppedRow);
+          if (rowSettings.relationship === 'group') {
+            Object.keys(self.rowObject.children || {}).forEach(function (n) {
+              self.updateField(self.rowObject.children[n], group);
+            });
+          }
+        });
+
+        self.rowObject.markChanged();
+        if (self.changed === false) {
+          $(Drupal.theme('tableDragChangedWarning')).insertBefore(self.table).hide().fadeIn('slow');
+          self.changed = true;
+        }
+      }
+
+      if (self.indentEnabled) {
+        self.rowObject.removeIndentClasses();
+      }
+      if (self.oldRowElement) {
+        $(self.oldRowElement).removeClass('drag-previous');
+      }
+      $droppedRow.removeClass('drag').addClass('drag-previous');
+      self.oldRowElement = droppedRow;
+      self.onDrop();
+      self.rowObject = null;
+    }
+
+    if (self.dragObject !== null) {
+      self.dragObject = null;
+      $('body').removeClass('drag');
+      clearInterval(self.scrollInterval);
+    }
+  };
+
+  Drupal.tableDrag.prototype.pointerCoords = function (event) {
+    if (event.pageX || event.pageY) {
+      return { x: event.pageX, y: event.pageY };
+    }
+    return {
+      x: event.clientX + document.body.scrollLeft - document.body.clientLeft,
+      y: event.clientY + document.body.scrollTop - document.body.clientTop
+    };
+  };
+
+  Drupal.tableDrag.prototype.getPointerOffset = function (target, event) {
+    var docPos = $(target).offset();
+    var pointerPos = this.pointerCoords(event);
+    return { x: pointerPos.x - docPos.left, y: pointerPos.y - docPos.top };
+  };
+
+  Drupal.tableDrag.prototype.findDropTargetRow = function (x, y) {
+    var rows = $(this.table.tBodies[0].rows).not(':hidden');
+    for (var n = 0; n < rows.length; n++) {
+      var row = rows[n];
+      var $row = $(row);
+      var rowY = $row.offset().top;
+      var rowHeight = void 0;
+
+      if (row.offsetHeight === 0) {
+        rowHeight = parseInt(row.firstChild.offsetHeight, 10) / 2;
+      } else {
+          rowHeight = parseInt(row.offsetHeight, 10) / 2;
+        }
+
+      if (y > rowY - rowHeight && y < rowY + rowHeight) {
+        if (this.indentEnabled) {
+          for (n in this.rowObject.group) {
+            if (this.rowObject.group[n] === row) {
+              return null;
+            }
+          }
+        } else if (row === this.rowObject.element) {
+            return null;
+          }
+
+        if (!this.rowObject.isValidSwap(row)) {
+          return null;
+        }
+
+        while ($row.is(':hidden') && $row.prev('tr').is(':hidden')) {
+          $row = $row.prev('tr:first-of-type');
+          row = $row.get(0);
+        }
+        return row;
+      }
+    }
+    return null;
+  };
+
+  Drupal.tableDrag.prototype.updateFields = function (changedRow) {
+    var _this3 = this;
+
+    Object.keys(this.tableSettings || {}).forEach(function (group) {
+      _this3.updateField(changedRow, group);
+    });
+  };
+
+  Drupal.tableDrag.prototype.updateField = function (changedRow, group) {
+    var rowSettings = this.rowSettings(group, changedRow);
+    var $changedRow = $(changedRow);
+    var sourceRow = void 0;
+    var $previousRow = void 0;
+    var previousRow = void 0;
+    var useSibling = void 0;
+
+    if (rowSettings.relationship === 'self' || rowSettings.relationship === 'group') {
+      sourceRow = changedRow;
+    } else if (rowSettings.relationship === 'sibling') {
+        $previousRow = $changedRow.prev('tr:first-of-type');
+        previousRow = $previousRow.get(0);
+        var $nextRow = $changedRow.next('tr:first-of-type');
+        var nextRow = $nextRow.get(0);
+        sourceRow = changedRow;
+        if ($previousRow.is('.draggable') && $previousRow.find('.' + group).length) {
+          if (this.indentEnabled) {
+            if ($previousRow.find('.js-indentations').length === $changedRow.find('.js-indentations').length) {
+              sourceRow = previousRow;
+            }
+          } else {
+            sourceRow = previousRow;
+          }
+        } else if ($nextRow.is('.draggable') && $nextRow.find('.' + group).length) {
+          if (this.indentEnabled) {
+            if ($nextRow.find('.js-indentations').length === $changedRow.find('.js-indentations').length) {
+              sourceRow = nextRow;
+            }
+          } else {
+            sourceRow = nextRow;
+          }
+        }
+      } else if (rowSettings.relationship === 'parent') {
+          $previousRow = $changedRow.prev('tr');
+          previousRow = $previousRow;
+          while ($previousRow.length && $previousRow.find('.js-indentation').length >= this.rowObject.indents) {
+            $previousRow = $previousRow.prev('tr');
+            previousRow = $previousRow;
+          }
+
+          if ($previousRow.length) {
+            sourceRow = $previousRow.get(0);
+          } else {
+              sourceRow = $(this.table).find('tr.draggable:first-of-type').get(0);
+              if (sourceRow === this.rowObject.element) {
+                sourceRow = $(this.rowObject.group[this.rowObject.group.length - 1]).next('tr.draggable').get(0);
+              }
+              useSibling = true;
+            }
+        }
+
+    this.copyDragClasses(sourceRow, changedRow, group);
+    rowSettings = this.rowSettings(group, changedRow);
+
+    if (useSibling) {
+      rowSettings.relationship = 'sibling';
+      rowSettings.source = rowSettings.target;
+    }
+
+    var targetClass = '.' + rowSettings.target;
+    var targetElement = $changedRow.find(targetClass).get(0);
+
+    if (targetElement) {
+      var sourceClass = '.' + rowSettings.source;
+      var sourceElement = $(sourceClass, sourceRow).get(0);
+      switch (rowSettings.action) {
+        case 'depth':
+          targetElement.value = $(sourceElement).closest('tr').find('.js-indentation').length;
+          break;
+
+        case 'match':
+          targetElement.value = sourceElement.value;
+          break;
+
+        case 'order':
+          {
+            var siblings = this.rowObject.findSiblings(rowSettings);
+            if ($(targetElement).is('select')) {
+              var values = [];
+              $(targetElement).find('option').each(function () {
+                values.push(this.value);
+              });
+              var maxVal = values[values.length - 1];
+
+              $(siblings).find(targetClass).each(function () {
+                if (values.length > 0) {
+                  this.value = values.shift();
+                } else {
+                  this.value = maxVal;
+                }
+              });
+            } else {
+              var weight = parseInt($(siblings[0]).find(targetClass).val(), 10) || 0;
+              $(siblings).find(targetClass).each(function () {
+                this.value = weight;
+                weight++;
+              });
+            }
+            break;
+          }
+      }
+    }
+  };
+
+  Drupal.tableDrag.prototype.copyDragClasses = function (sourceRow, targetRow, group) {
+    var sourceElement = $(sourceRow).find('.' + group);
+    var targetElement = $(targetRow).find('.' + group);
+    if (sourceElement.length && targetElement.length) {
+      targetElement[0].className = sourceElement[0].className;
+    }
+  };
+
+  Drupal.tableDrag.prototype.checkScroll = function (cursorY) {
+    var de = document.documentElement;
+    var b = document.body;
+
+    var windowHeight = window.innerHeight || (de.clientHeight && de.clientWidth !== 0 ? de.clientHeight : b.offsetHeight);
+    this.windowHeight = windowHeight;
+    var scrollY = void 0;
+    if (document.all) {
+      scrollY = !de.scrollTop ? b.scrollTop : de.scrollTop;
+    } else {
+      scrollY = window.pageYOffset ? window.pageYOffset : window.scrollY;
+    }
+    this.scrollY = scrollY;
+    var trigger = this.scrollSettings.trigger;
+    var delta = 0;
+
+    if (cursorY - scrollY > windowHeight - trigger) {
+      delta = trigger / (windowHeight + scrollY - cursorY);
+      delta = delta > 0 && delta < trigger ? delta : trigger;
+      return delta * this.scrollSettings.amount;
+    } else if (cursorY - scrollY < trigger) {
+      delta = trigger / (cursorY - scrollY);
+      delta = delta > 0 && delta < trigger ? delta : trigger;
+      return -delta * this.scrollSettings.amount;
+    }
+  };
+
+  Drupal.tableDrag.prototype.setScroll = function (scrollAmount) {
+    var self = this;
+
+    this.scrollInterval = setInterval(function () {
+      self.checkScroll(self.currentPointerCoords.y);
+      var aboveTable = self.scrollY > self.table.topY;
+      var belowTable = self.scrollY + self.windowHeight < self.table.bottomY;
+      if (scrollAmount > 0 && belowTable || scrollAmount < 0 && aboveTable) {
+        window.scrollBy(0, scrollAmount);
+      }
+    }, this.scrollSettings.interval);
+  };
+
+  Drupal.tableDrag.prototype.restripeTable = function () {
+    $(this.table).find('> tbody > tr.draggable, > tr.draggable').filter(':visible').filter(':odd').removeClass('odd').addClass('even').end().filter(':even').removeClass('even').addClass('odd');
+  };
+
+  Drupal.tableDrag.prototype.onDrag = function () {
+    return null;
+  };
+
+  Drupal.tableDrag.prototype.onDrop = function () {
+    return null;
+  };
+
+  Drupal.tableDrag.prototype.row = function (tableRow, method, indentEnabled, maxDepth, addClasses) {
+    var $tableRow = $(tableRow);
+
+    this.element = tableRow;
+    this.method = method;
+    this.group = [tableRow];
+    this.groupDepth = $tableRow.find('.js-indentation').length;
+    this.changed = false;
+    this.table = $tableRow.closest('table')[0];
+    this.indentEnabled = indentEnabled;
+    this.maxDepth = maxDepth;
+
+    this.direction = '';
+    if (this.indentEnabled) {
+      this.indents = $tableRow.find('.js-indentation').length;
+      this.children = this.findChildren(addClasses);
+      this.group = $.merge(this.group, this.children);
+
+      for (var n = 0; n < this.group.length; n++) {
+        this.groupDepth = Math.max($(this.group[n]).find('.js-indentation').length, this.groupDepth);
+      }
+    }
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.findChildren = function (addClasses) {
+    var parentIndentation = this.indents;
+    var currentRow = $(this.element, this.table).next('tr.draggable');
+    var rows = [];
+    var child = 0;
+
+    function rowIndentation(indentNum, el) {
+      var self = $(el);
+      if (child === 1 && indentNum === parentIndentation) {
+        self.addClass('tree-child-first');
+      }
+      if (indentNum === parentIndentation) {
+        self.addClass('tree-child');
+      } else if (indentNum > parentIndentation) {
+        self.addClass('tree-child-horizontal');
+      }
+    }
+
+    while (currentRow.length) {
+      if (currentRow.find('.js-indentation').length > parentIndentation) {
+        child++;
+        rows.push(currentRow[0]);
+        if (addClasses) {
+          currentRow.find('.js-indentation').each(rowIndentation);
+        }
+      } else {
+        break;
+      }
+      currentRow = currentRow.next('tr.draggable');
+    }
+    if (addClasses && rows.length) {
+      $(rows[rows.length - 1]).find('.js-indentation:nth-child(' + (parentIndentation + 1) + ')').addClass('tree-child-last');
+    }
+    return rows;
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.isValidSwap = function (row) {
+    var $row = $(row);
+    if (this.indentEnabled) {
+      var prevRow = void 0;
+      var nextRow = void 0;
+      if (this.direction === 'down') {
+        prevRow = row;
+        nextRow = $row.next('tr').get(0);
+      } else {
+        prevRow = $row.prev('tr').get(0);
+        nextRow = row;
+      }
+      this.interval = this.validIndentInterval(prevRow, nextRow);
+
+      if (this.interval.min > this.interval.max) {
+        return false;
+      }
+    }
+
+    if (this.table.tBodies[0].rows[0] === row && $row.is(':not(.draggable)')) {
+      return false;
+    }
+
+    return true;
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.swap = function (position, row) {
+    this.group.forEach(function (row) {
+      Drupal.detachBehaviors(row, drupalSettings, 'move');
+    });
+    $(row)[position](this.group);
+
+    this.group.forEach(function (row) {
+      Drupal.attachBehaviors(row, drupalSettings);
+    });
+    this.changed = true;
+    this.onSwap(row);
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.validIndentInterval = function (prevRow, nextRow) {
+    var $prevRow = $(prevRow);
+    var maxIndent = void 0;
+
+    var minIndent = nextRow ? $(nextRow).find('.js-indentation').length : 0;
+
+    if (!prevRow || $prevRow.is(':not(.draggable)') || $(this.element).is('.tabledrag-root')) {
+      maxIndent = 0;
+    } else {
+      maxIndent = $prevRow.find('.js-indentation').length + ($prevRow.is('.tabledrag-leaf') ? 0 : 1);
+
+      if (this.maxDepth) {
+        maxIndent = Math.min(maxIndent, this.maxDepth - (this.groupDepth - this.indents));
+      }
+    }
+
+    return { min: minIndent, max: maxIndent };
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.indent = function (indentDiff) {
+    var $group = $(this.group);
+
+    if (!this.interval) {
+      var prevRow = $(this.element).prev('tr').get(0);
+      var nextRow = $group.eq(-1).next('tr').get(0);
+      this.interval = this.validIndentInterval(prevRow, nextRow);
+    }
+
+    var indent = this.indents + indentDiff;
+    indent = Math.max(indent, this.interval.min);
+    indent = Math.min(indent, this.interval.max);
+    indentDiff = indent - this.indents;
+
+    for (var n = 1; n <= Math.abs(indentDiff); n++) {
+      if (indentDiff < 0) {
+        $group.find('.js-indentation:first-of-type').remove();
+        this.indents--;
+      } else {
+        $group.find('td:first-of-type').prepend(Drupal.theme('tableDragIndentation'));
+        this.indents++;
+      }
+    }
+    if (indentDiff) {
+      this.changed = true;
+      this.groupDepth += indentDiff;
+      this.onIndent();
+    }
+
+    return indentDiff;
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.findSiblings = function (rowSettings) {
+    var siblings = [];
+    var directions = ['prev', 'next'];
+    var rowIndentation = this.indents;
+    var checkRowIndentation = void 0;
+    for (var d = 0; d < directions.length; d++) {
+      var checkRow = $(this.element)[directions[d]]();
+      while (checkRow.length) {
+        if (checkRow.find('.' + rowSettings.target)) {
+          if (this.indentEnabled) {
+            checkRowIndentation = checkRow.find('.js-indentation').length;
+          }
+
+          if (!this.indentEnabled || checkRowIndentation === rowIndentation) {
+            siblings.push(checkRow[0]);
+          } else if (checkRowIndentation < rowIndentation) {
+            break;
+          }
+        } else {
+          break;
+        }
+        checkRow = checkRow[directions[d]]();
+      }
+
+      if (directions[d] === 'prev') {
+        siblings.reverse();
+        siblings.push(this.element);
+      }
+    }
+    return siblings;
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.removeIndentClasses = function () {
+    var _this4 = this;
+
+    Object.keys(this.children || {}).forEach(function (n) {
+      $(_this4.children[n]).find('.js-indentation').removeClass('tree-child').removeClass('tree-child-first').removeClass('tree-child-last').removeClass('tree-child-horizontal');
+    });
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.markChanged = function () {
+    var marker = Drupal.theme('tableDragChangedMarker');
+    var cell = $(this.element).find('td:first-of-type');
+    if (cell.find('abbr.tabledrag-changed').length === 0) {
+      cell.append(marker);
+    }
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.onIndent = function () {
+    return null;
+  };
+
+  Drupal.tableDrag.prototype.row.prototype.onSwap = function (swappedRow) {
+    return null;
+  };
+
+  $.extend(Drupal.theme, {
+    tableDragChangedMarker: function tableDragChangedMarker() {
+      return '<abbr class="warning tabledrag-changed" title="' + Drupal.t('Changed') + '">*</abbr>';
+    },
+    tableDragIndentation: function tableDragIndentation() {
+      return '<div class="js-indentation indentation">&nbsp;</div>';
+    },
+    tableDragChangedWarning: function tableDragChangedWarning() {
+      return '<div class="tabledrag-changed-warning messages messages--warning" role="alert">' + Drupal.theme('tableDragChangedMarker') + ' ' + Drupal.t('You have unsaved changes.') + '</div>';
+    }
+  });
+})(jQuery, Drupal, drupalSettings);