https://geoconfirmed.org/js/sortable.esm.ad77j3wqwf.js

1/**!
2 * Sortable 1.15.7
3 * @author	RubaXa   <[email protected]>
4 * @author	owenm    <[email protected]>
5 * @license MIT
6 */
7function _arrayLikeToArray(r, a) {
8  (null == a || a > r.length) && (a = r.length);
9  for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e];
10  return n;
11}
12function _arrayWithoutHoles(r) {
13  if (Array.isArray(r)) return _arrayLikeToArray(r);
14}
15function _defineProperty(e, r, t) {
16  return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, {
17    value: t,
18    enumerable: !0,
19    configurable: !0,
20    writable: !0
21  }) : e[r] = t, e;
22}
23function _extends() {
24  return _extends = Object.assign ? Object.assign.bind() : function (n) {
25    for (var e = 1; e < arguments.length; e++) {
26      var t = arguments[e];
27      for (var r in t) ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]);
28    }
29    return n;
30  }, _extends.apply(null, arguments);
31}
32function _iterableToArray(r) {
33  if ("undefined" != typeof Symbol && null != r[Symbol.iterator] || null != r["@@iterator"]) return Array.from(r);
34}
35function _nonIterableSpread() {
36  throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
37}
38function ownKeys(e, r) {
39  var t = Object.keys(e);
40  if (Object.getOwnPropertySymbols) {
41    var o = Object.getOwnPropertySymbols(e);
42    r && (o = o.filter(function (r) {
43      return Object.getOwnPropertyDescriptor(e, r).enumerable;
44    })), t.push.apply(t, o);
45  }
46  return t;
47}
48function _objectSpread2(e) {
49  for (var r = 1; r < arguments.length; r++) {
50    var t = null != arguments[r] ? arguments[r] : {};
51    r % 2 ? ownKeys(Object(t), !0).forEach(function (r) {
52      _defineProperty(e, r, t[r]);
53    }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) {
54      Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r));
55    });
56  }
57  return e;
58}
59function _objectWithoutProperties(e, t) {
60  if (null == e) return {};
61  var o,
62    r,
63    i = _objectWithoutPropertiesLoose(e, t);
64  if (Object.getOwnPropertySymbols) {
65    var n = Object.getOwnPropertySymbols(e);
66    for (r = 0; r < n.length; r++) o = n[r], -1 === t.indexOf(o) && {}.propertyIsEnumerable.call(e, o) && (i[o] = e[o]);
67  }
68  return i;
69}
70function _objectWithoutPropertiesLoose(r, e) {
71  if (null == r) return {};
72  var t = {};
73  for (var n in r) if ({}.hasOwnProperty.call(r, n)) {
74    if (-1 !== e.indexOf(n)) continue;
75    t[n] = r[n];
76  }
77  return t;
78}
79function _toConsumableArray(r) {
80  return _arrayWithoutHoles(r) || _iterableToArray(r) || _unsupportedIterableToArray(r) || _nonIterableSpread();
81}
82function _toPrimitive(t, r) {
83  if ("object" != typeof t || !t) return t;
84  var e = t[Symbol.toPrimitive];
85  if (void 0 !== e) {
86    var i = e.call(t, r || "default");
87    if ("object" != typeof i) return i;
88    throw new TypeError("@@toPrimitive must return a primitive value.");
89  }
90  return ("string" === r ? String : Number)(t);
91}
92function _toPropertyKey(t) {
93  var i = _toPrimitive(t, "string");
94  return "symbol" == typeof i ? i : i + "";
95}
96function _typeof(o) {
97  "@babel/helpers - typeof";
98
99  return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
100    return typeof o;
101  } : function (o) {
102    return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
103  }, _typeof(o);
104}
105function _unsupportedIterableToArray(r, a) {
106  if (r) {
107    if ("string" == typeof r) return _arrayLikeToArray(r, a);
108    var t = {}.toString.call(r).slice(8, -1);
109    return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0;
110  }
111}
112
113var version = "1.15.7";
114
115function userAgent(pattern) {
116  if (typeof window !== 'undefined' && window.navigator) {
117    return !! /*@__PURE__*/navigator.userAgent.match(pattern);
118  }
119}
120var IE11OrLess = userAgent(/(?:Trident.*rv[ :]?11\.|msie|iemobile|Windows Phone)/i);
121var Edge = userAgent(/Edge/i);
122var FireFox = userAgent(/firefox/i);
123var Safari = userAgent(/safari/i) && !userAgent(/chrome/i) && !userAgent(/android/i);
124var IOS = userAgent(/iP(ad|od|hone)/i);
125var ChromeForAndroid = userAgent(/chrome/i) && userAgent(/android/i);
126
127var captureMode = {
128  capture: false,
129  passive: false
130};
131function on(el, event, fn) {
132  el.addEventListener(event, fn, !IE11OrLess && captureMode);
133}
134function off(el, event, fn) {
135  el.removeEventListener(event, fn, !IE11OrLess && captureMode);
136}
137function matches( /**HTMLElement*/el, /**String*/selector) {
138  if (!selector) return;
139  selector[0] === '>' && (selector = selector.substring(1));
140  if (el) {
141    try {
142      if (el.matches) {
143        return el.matches(selector);
144      } else if (el.msMatchesSelector) {
145        return el.msMatchesSelector(selector);
146      } else if (el.webkitMatchesSelector) {
147        return el.webkitMatchesSelector(selector);
148      }
149    } catch (_) {
150      return false;
151    }
152  }
153  return false;
154}
155function getParentOrHost(el) {
156  return el.host && el !== document && el.host.nodeType && el.host !== el ? el.host : el.parentNode;
157}
158function closest( /**HTMLElement*/el, /**String*/selector, /**HTMLElement*/ctx, includeCTX) {
159  if (el) {
160    ctx = ctx || document;
161    do {
162      if (selector != null && (selector[0] === '>' ? el.parentNode === ctx && matches(el, selector) : matches(el, selector)) || includeCTX && el === ctx) {
163        return el;
164      }
165      if (el === ctx) break;
166      /* jshint boss:true */
167    } while (el = getParentOrHost(el));
168  }
169  return null;
170}
171var R_SPACE = /\s+/g;
172function toggleClass(el, name, state) {
173  if (el && name) {
174    if (el.classList) {
175      el.classList[state ? 'add' : 'remove'](name);
176    } else {
177      var className = (' ' + el.className + ' ').replace(R_SPACE, ' ').replace(' ' + name + ' ', ' ');
178      el.className = (className + (state ? ' ' + name : '')).replace(R_SPACE, ' ');
179    }
180  }
181}
182function css(el, prop, val) {
183  var style = el && el.style;
184  if (style) {
185    if (val === void 0) {
186      if (document.defaultView && document.defaultView.getComputedStyle) {
187        val = document.defaultView.getComputedStyle(el, '');
188      } else if (el.currentStyle) {
189        val = el.currentStyle;
190      }
191      return prop === void 0 ? val : val[prop];
192    } else {
193      if (!(prop in style) && prop.indexOf('webkit') === -1) {
194        prop = '-webkit-' + prop;
195      }
196      style[prop] = val + (typeof val === 'string' ? '' : 'px');
197    }
198  }
199}
200function matrix(el, selfOnly) {
201  var appliedTransforms = '';
202  if (typeof el === 'string') {
203    appliedTransforms = el;
204  } else {
205    do {
206      var transform = css(el, 'transform');
207      if (transform && transform !== 'none') {
208        appliedTransforms = transform + ' ' + appliedTransforms;
209      }
210      /* jshint boss:true */
211    } while (!selfOnly && (el = el.parentNode));
212  }
213  var matrixFn = window.DOMMatrix || window.WebKitCSSMatrix || window.CSSMatrix || window.MSCSSMatrix;
214  /*jshint -W056 */
215  return matrixFn && new matrixFn(appliedTransforms);
216}
217function find(ctx, tagName, iterator) {
218  if (ctx) {
219    var list = ctx.getElementsByTagName(tagName),
220      i = 0,
221      n = list.length;
222    if (iterator) {
223      for (; i < n; i++) {
224        iterator(list[i], i);
225      }
226    }
227    return list;
228  }
229  return [];
230}
231function getWindowScrollingElement() {
232  var scrollingElement = document.scrollingElement;
233  if (scrollingElement) {
234    return scrollingElement;
235  } else {
236    return document.documentElement;
237  }
238}
239
240/**
241 * Returns the "bounding client rect" of given element
242 * @param  {HTMLElement} el                       The element whose boundingClientRect is wanted
243 * @param  {[Boolean]} relativeToContainingBlock  Whether the rect should be relative to the containing block of (including) the container
244 * @param  {[Boolean]} relativeToNonStaticParent  Whether the rect should be relative to the relative parent of (including) the contaienr
245 * @param  {[Boolean]} undoScale                  Whether the container's scale() should be undone
246 * @param  {[HTMLElement]} container              The parent the element will be placed in
247 * @return {Object}                               The boundingClientRect of el, with specified adjustments
248 */
249function getRect(el, relativeToContainingBlock, relativeToNonStaticParent, undoScale, container) {
250  if (!el.getBoundingClientRect && el !== window) return;
251  var elRect, top, left, bottom, right, height, width;
252  if (el !== window && el.parentNode && el !== getWindowScrollingElement()) {
253    elRect = el.getBoundingClientRect();
254    top = elRect.top;
255    left = elRect.left;
256    bottom = elRect.bottom;
257    right = elRect.right;
258    height = elRect.height;
259    width = elRect.width;
260  } else {
261    top = 0;
262    left = 0;
263    bottom = window.innerHeight;
264    right = window.innerWidth;
265    height = window.innerHeight;
266    width = window.innerWidth;
267  }
268  if ((relativeToContainingBlock || relativeToNonStaticParent) && el !== window) {
269    // Adjust for translate()
270    container = container || el.parentNode;
271
272    // solves #1123 (see: https://stackoverflow.com/a/37953806/6088312)
273    // Not needed on <= IE11
274    if (!IE11OrLess) {
275      do {
276        if (container && container.getBoundingClientRect && (css(container, 'transform') !== 'none' || relativeToNonStaticParent && css(container, 'position') !== 'static')) {
277          var containerRect = container.getBoundingClientRect();
278
279          // Set relative to edges of padding box of container
280          top -= containerRect.top + parseInt(css(container, 'border-top-width'));
281          left -= containerRect.left + parseInt(css(container, 'border-left-width'));
282          bottom = top + elRect.height;
283          right = left + elRect.width;
284          break;
285        }
286        /* jshint boss:true */
287      } while (container = container.parentNode);
288    }
289  }
290  if (undoScale && el !== window) {
291    // Adjust for scale()
292    var elMatrix = matrix(container || el),
293      scaleX = elMatrix && elMatrix.a,
294      scaleY = elMatrix && elMatrix.d;
295    if (elMatrix) {
296      top /= scaleY;
297      left /= scaleX;
298      width /= scaleX;
299      height /= scaleY;
300      bottom = top + height;
301      right = left + width;
302    }
303  }
304  return {
305    top: top,
306    left: left,
307    bottom: bottom,
308    right: right,
309    width: width,
310    height: height
311  };
312}
313
314/**
315 * Checks if a side of an element is scrolled past a side of its parents
316 * @param  {HTMLElement}  el           The element who's side being scrolled out of view is in question
317 * @param  {String}       elSide       Side of the element in question ('top', 'left', 'right', 'bottom')
318 * @param  {String}       parentSide   Side of the parent in question ('top', 'left', 'right', 'bottom')
319 * @return {HTMLElement}               The parent scroll element that the el's side is scrolled past, or null if there is no such element
320 */
321function isScrolledPast(el, elSide, parentSide) {
322  var parent = getParentAutoScrollElement(el, true),
323    elSideVal = getRect(el)[elSide];
324
325  /* jshint boss:true */
326  while (parent) {
327    var parentSideVal = getRect(parent)[parentSide],
328      visible = void 0;
329    if (parentSide === 'top' || parentSide === 'left') {
330      visible = elSideVal >= parentSideVal;
331    } else {
332      visible = elSideVal <= parentSideVal;
333    }
334    if (!visible) return parent;
335    if (parent === getWindowScrollingElement()) break;
336    parent = getParentAutoScrollElement(parent, false);
337  }
338  return false;
339}
340
341/**
342 * Gets nth child of el, ignoring hidden children, sortable's elements (does not ignore clone if it's visible)
343 * and non-draggable elements
344 * @param  {HTMLElement} el       The parent element
345 * @param  {Number} childNum      The index of the child
346 * @param  {Object} options       Parent Sortable's options
347 * @return {HTMLElement}          The child at index childNum, or null if not found
348 */
349function getChild(el, childNum, options, includeDragEl) {
350  var currentChild = 0,
351    i = 0,
352    children = el.children;
353  while (i < children.length) {
354    if (children[i].style.display !== 'none' && children[i] !== Sortable.ghost && (includeDragEl || children[i] !== Sortable.dragged) && closest(children[i], options.draggable, el, false)) {
355      if (currentChild === childNum) {
356        return children[i];
357      }
358      currentChild++;
359    }
360    i++;
361  }
362  return null;
363}
364
365/**
366 * Gets the last child in the el, ignoring ghostEl or invisible elements (clones)
367 * @param  {HTMLElement} el       Parent element
368 * @param  {selector} selector    Any other elements that should be ignored
369 * @return {HTMLElement}          The last child, ignoring ghostEl
370 */
371function lastChild(el, selector) {
372  var last = el.lastElementChild;
373  while (last && (last === Sortable.ghost || css(last, 'display') === 'none' || selector && !matches(last, selector))) {
374    last = last.previousElementSibling;
375  }
376  return last || null;
377}
378
379/**
380 * Returns the index of an element within its parent for a selected set of
381 * elements
382 * @param  {HTMLElement} el
383 * @param  {selector} selector
384 * @return {number}
385 */
386function index(el, selector) {
387  var index = 0;
388  if (!el || !el.parentNode) {
389    return -1;
390  }
391
392  /* jshint boss:true */
393  while (el = el.previousElementSibling) {
394    if (el.nodeName.toUpperCase() !== 'TEMPLATE' && el !== Sortable.clone && (!selector || matches(el, selector))) {
395      index++;
396    }
397  }
398  return index;
399}
400
401/**
402 * Returns the scroll offset of the given element, added with all the scroll offsets of parent elements.
403 * The value is returned in real pixels.
404 * @param  {HTMLElement} el
405 * @return {Array}             Offsets in the format of [left, top]
406 */
407function getRelativeScrollOffset(el) {
408  var offsetLeft = 0,
409    offsetTop = 0,
410    winScroller = getWindowScrollingElement();
411  if (el) {
412    do {
413      var elMatrix = matrix(el),
414        scaleX = elMatrix.a,
415        scaleY = elMatrix.d;
416      offsetLeft += el.scrollLeft * scaleX;
417      offsetTop += el.scrollTop * scaleY;
418    } while (el !== winScroller && (el = el.parentNode));
419  }
420  return [offsetLeft, offsetTop];
421}
422
423/**
424 * Returns the index of the object within the given array
425 * @param  {Array} arr   Array that may or may not hold the object
426 * @param  {Object} obj  An object that has a key-value pair unique to and identical to a key-value pair in the object you want to find
427 * @return {Number}      The index of the object in the array, or -1
428 */
429function indexOfObject(arr, obj) {
430  for (var i in arr) {
431    if (!arr.hasOwnProperty(i)) continue;
432    for (var key in obj) {
433      if (obj.hasOwnProperty(key) && obj[key] === arr[i][key]) return Number(i);
434    }
435  }
436  return -1;
437}
438function getParentAutoScrollElement(el, includeSelf) {
439  // skip to window
440  if (!el || !el.getBoundingClientRect) return getWindowScrollingElement();
441  var elem = el;
442  var gotSelf = false;
443  do {
444    // we don't need to get elem css if it isn't even overflowing in the first place (performance)
445    if (elem.clientWidth < elem.scrollWidth || elem.clientHeight < elem.scrollHeight) {
446      var elemCSS = css(elem);
447      if (elem.clientWidth < elem.scrollWidth && (elemCSS.overflowX == 'auto' || elemCSS.overflowX == 'scroll') || elem.clientHeight < elem.scrollHeight && (elemCSS.overflowY == 'auto' || elemCSS.overflowY == 'scroll')) {
448        if (!elem.getBoundingClientRect || elem === document.body) return getWindowScrollingElement();
449        if (gotSelf || includeSelf) return elem;
450        gotSelf = true;
451      }
452    }
453    /* jshint boss:true */
454  } while (elem = elem.parentNode);
455  return getWindowScrollingElement();
456}
457function extend(dst, src) {
458  if (dst && src) {
459    for (var key in src) {
460      if (src.hasOwnProperty(key)) {
461        dst[key] = src[key];
462      }
463    }
464  }
465  return dst;
466}
467function isRectEqual(rect1, rect2) {
468  return Math.round(rect1.top) === Math.round(rect2.top) && Math.round(rect1.left) === Math.round(rect2.left) && Math.round(rect1.height) === Math.round(rect2.height) && Math.round(rect1.width) === Math.round(rect2.width);
469}
470var _throttleTimeout;
471function throttle(callback, ms) {
472  return function () {
473    if (!_throttleTimeout) {
474      var args = arguments,
475        _this = this;
476      if (args.length === 1) {
477        callback.call(_this, args[0]);
478      } else {
479        callback.apply(_this, args);
480      }
481      _throttleTimeout = setTimeout(function () {
482        _throttleTimeout = void 0;
483      }, ms);
484    }
485  };
486}
487function cancelThrottle() {
488  clearTimeout(_throttleTimeout);
489  _throttleTimeout = void 0;
490}
491function scrollBy(el, x, y) {
492  el.scrollLeft += x;
493  el.scrollTop += y;
494}
495function clone(el) {
496  var Polymer = window.Polymer;
497  var $ = window.jQuery || window.Zepto;
498  if (Polymer && Polymer.dom) {
499    return Polymer.dom(el).cloneNode(true);
500  } else if ($) {
501    return $(el).clone(true)[0];
502  } else {
503    return el.cloneNode(true);
504  }
505}
506function setRect(el, rect) {
507  css(el, 'position', 'absolute');
508  css(el, 'top', rect.top);
509  css(el, 'left', rect.left);
510  css(el, 'width', rect.width);
511  css(el, 'height', rect.height);
512}
513function unsetRect(el) {
514  css(el, 'position', '');
515  css(el, 'top', '');
516  css(el, 'left', '');
517  css(el, 'width', '');
518  css(el, 'height', '');

518
519}
520function getChildContainingRectFromElement(container, options, ghostEl) {
521  var rect = {};
522  Array.from(container.children).forEach(function (child) {
523    var _rect$left, _rect$top, _rect$right, _rect$bottom;
524    if (!closest(child, options.draggable, container, false) || child.animated || child === ghostEl) return;
525    var childRect = getRect(child);
526    rect.left = Math.min((_rect$left = rect.left) !== null && _rect$left !== void 0 ? _rect$left : Infinity, childRect.left);
527    rect.top = Math.min((_rect$top = rect.top) !== null && _rect$top !== void 0 ? _rect$top : Infinity, childRect.top);
528    rect.right = Math.max((_rect$right = rect.right) !== null && _rect$right !== void 0 ? _rect$right : -Infinity, childRect.right);
529    rect.bottom = Math.max((_rect$bottom = rect.bottom) !== null && _rect$bottom !== void 0 ? _rect$bottom : -Infinity, childRect.bottom);
530  });
531  rect.width = rect.right - rect.left;
532  rect.height = rect.bottom - rect.top;
533  rect.x = rect.left;
534  rect.y = rect.top;
535  return rect;
536}
537var expando = 'Sortable' + new Date().getTime();
538
539function AnimationStateManager() {
540  var animationStates = [],
541    animationCallbackId;
542  return {
543    captureAnimationState: function captureAnimationState() {
544      animationStates = [];
545      if (!this.options.animation) return;
546      var children = [].slice.call(this.el.children);
547      children.forEach(function (child) {
548        if (css(child, 'display') === 'none' || child === Sortable.ghost) return;
549        animationStates.push({
550          target: child,
551          rect: getRect(child)
552        });
553        var fromRect = _objectSpread2({}, animationStates[animationStates.length - 1].rect);
554
555        // If animating: compensate for current animation
556        if (child.thisAnimationDuration) {
557          var childMatrix = matrix(child, true);
558          if (childMatrix) {
559            fromRect.top -= childMatrix.f;
560            fromRect.left -= childMatrix.e;
561          }
562        }
563        child.fromRect = fromRect;
564      });
565    },
566    addAnimationState: function addAnimationState(state) {
567      animationStates.push(state);
568    },
569    removeAnimationState: function removeAnimationState(target) {
570      animationStates.splice(indexOfObject(animationStates, {
571        target: target
572      }), 1);
573    },
574    animateAll: function animateAll(callback) {
575      var _this = this;
576      if (!this.options.animation) {
577        clearTimeout(animationCallbackId);
578        if (typeof callback === 'function') callback();
579        return;
580      }
581      var animating = false,
582        animationTime = 0;
583      animationStates.forEach(function (state) {
584        var time = 0,
585          target = state.target,
586          fromRect = target.fromRect,
587          toRect = getRect(target),
588          prevFromRect = target.prevFromRect,
589          prevToRect = target.prevToRect,
590          animatingRect = state.rect,
591          targetMatrix = matrix(target, true);
592        if (targetMatrix) {
593          // Compensate for current animation
594          toRect.top -= targetMatrix.f;
595          toRect.left -= targetMatrix.e;
596        }
597        target.toRect = toRect;
598        if (target.thisAnimationDuration) {
599          // Could also check if animatingRect is between fromRect and toRect
600          if (isRectEqual(prevFromRect, toRect) && !isRectEqual(fromRect, toRect) &&
601          // Make sure animatingRect is on line between toRect & fromRect
602          (animatingRect.top - toRect.top) / (animatingRect.left - toRect.left) === (fromRect.top - toRect.top) / (fromRect.left - toRect.left)) {
603            // If returning to same place as started from animation and on same axis
604            time = calculateRealTime(animatingRect, prevFromRect, prevToRect, _this.options);
605          }
606        }
607
608        // if fromRect != toRect: animate
609        if (!isRectEqual(toRect, fromRect)) {
610          target.prevFromRect = fromRect;
611          target.prevToRect = toRect;
612          if (!time) {
613            time = _this.options.animation;
614          }
615          _this.animate(target, animatingRect, toRect, time);
616        }
617        if (time) {
618          animating = true;
619          animationTime = Math.max(animationTime, time);
620          clearTimeout(target.animationResetTimer);
621          target.animationResetTimer = setTimeout(function () {
622            target.animationTime = 0;
623            target.prevFromRect = null;
624            target.fromRect = null;
625            target.prevToRect = null;
626            target.thisAnimationDuration = null;
627          }, time);
628          target.thisAnimationDuration = time;
629        }
630      });
631      clearTimeout(animationCallbackId);
632      if (!animating) {
633        if (typeof callback === 'function') callback();
634      } else {
635        animationCallbackId = setTimeout(function () {
636          if (typeof callback === 'function') callback();
637        }, animationTime);
638      }
639      animationStates = [];
640    },
641    animate: function animate(target, currentRect, toRect, duration) {
642      if (duration) {
643        css(target, 'transition', '');
644        css(target, 'transform', '');
645        var elMatrix = matrix(this.el),
646          scaleX = elMatrix && elMatrix.a,
647          scaleY = elMatrix && elMatrix.d,
648          translateX = (currentRect.left - toRect.left) / (scaleX || 1),
649          translateY = (currentRect.top - toRect.top) / (scaleY || 1);
650        target.animatingX = !!translateX;
651        target.animatingY = !!translateY;
652        css(target, 'transform', 'translate3d(' + translateX + 'px,' + translateY + 'px,0)');
653        this.forRepaintDummy = repaint(target); // repaint
654
655        css(target, 'transition', 'transform ' + duration + 'ms' + (this.options.easing ? ' ' + this.options.easing : ''));
656        css(target, 'transform', 'translate3d(0,0,0)');
657        typeof target.animated === 'number' && clearTimeout(target.animated);
658        target.animated = setTimeout(function () {
659          css(target, 'transition', '');
660          css(target, 'transform', '');
661          target.animated = false;
662          target.animatingX = false;
663          target.animatingY = false;
664        }, duration);
665      }
666    }
667  };
668}
669function repaint(target) {
670  return target.offsetWidth;
671}
672function calculateRealTime(animatingRect, fromRect, toRect, options) {
673  return Math.sqrt(Math.pow(fromRect.top - animatingRect.top, 2) + Math.pow(fromRect.left - animatingRect.left, 2)) / Math.sqrt(Math.pow(fromRect.top - toRect.top, 2) + Math.pow(fromRect.left - toRect.left, 2)) * options.animation;
674}
675
676var plugins = [];
677var defaults = {
678  initializeByDefault: true
679};
680var PluginManager = {
681  mount: function mount(plugin) {
682    // Set default static properties
683    for (var option in defaults) {
684      if (defaults.hasOwnProperty(option) && !(option in plugin)) {
685        plugin[option] = defaults[option];
686      }
687    }
688    plugins.forEach(function (p) {
689      if (p.pluginName === plugin.pluginName) {
690        throw "Sortable: Cannot mount plugin ".concat(plugin.pluginName, " more than once");
691      }
692    });
693    plugins.push(plugin);
694  },
695  pluginEvent: function pluginEvent(eventName, sortable, evt) {
696    var _this = this;
697    this.eventCanceled = false;
698    evt.cancel = function () {
699      _this.eventCanceled = true;
700    };
701    var eventNameGlobal = eventName + 'Global';
702    plugins.forEach(function (plugin) {
703      if (!sortable[plugin.pluginName]) return;
704      // Fire global events if it exists in this sortable
705      if (sortable[plugin.pluginName][eventNameGlobal]) {
706        sortable[plugin.pluginName][eventNameGlobal](_objectSpread2({
707          sortable: sortable
708        }, evt));
709      }
710
711      // Only fire plugin event if plugin is enabled in this sortable,
712      // and plugin has event defined
713      if (sortable.options[plugin.pluginName] && sortable[plugin.pluginName][eventName]) {
714        sortable[plugin.pluginName][eventName](_objectSpread2({
715          sortable: sortable
716        }, evt));
717      }
718    });
719  },
720  initializePlugins: function initializePlugins(sortable, el, defaults, options) {
721    plugins.forEach(function (plugin) {
722      var pluginName = plugin.pluginName;
723      if (!sortable.options[pluginName] && !plugin.initializeByDefault) return;
724      var initialized = new plugin(sortable, el, sortable.options);
725      initialized.sortable = sortable;
726      initialized.options = sortable.options;
727      sortable[pluginName] = initialized;
728
729      // Add default options from plugin
730      _extends(defaults, initialized.defaults);
731    });
732    for (var option in sortable.options) {
733      if (!sortable.options.hasOwnProperty(option)) continue;
734      var modified = this.modifyOption(sortable, option, sortable.options[option]);
735      if (typeof modified !== 'undefined') {
736        sortable.options[option] = modified;
737      }
738    }
739  },
740  getEventProperties: function getEventProperties(name, sortable) {
741    var eventProperties = {};
742    plugins.forEach(function (plugin) {
743      if (typeof plugin.eventProperties !== 'function') return;
744      _extends(eventProperties, plugin.eventProperties.call(sortable[plugin.pluginName], name));
745    });
746    return eventProperties;
747  },
748  modifyOption: function modifyOption(sortable, name, value) {
749    var modifiedValue;
750    plugins.forEach(function (plugin) {
751      // Plugin must exist on the Sortable
752      if (!sortable[plugin.pluginName]) return;
753
754      // If static option listener exists for this option, call in the context of the Sortable's instance of this plugin
755      if (plugin.optionListeners && typeof plugin.optionListeners[name] === 'function') {
756        modifiedValue = plugin.optionListeners[name].call(sortable[plugin.pluginName], value);
757      }
758    });
759    return modifiedValue;
760  }
761};
762
763function dispatchEvent(_ref) {
764  var sortable = _ref.sortable,
765    rootEl = _ref.rootEl,
766    name = _ref.name,
767    targetEl = _ref.targetEl,
768    cloneEl = _ref.cloneEl,
769    toEl = _ref.toEl,
770    fromEl = _ref.fromEl,
771    oldIndex = _ref.oldIndex,
772    newIndex = _ref.newIndex,
773    oldDraggableIndex = _ref.oldDraggableIndex,
774    newDraggableIndex = _ref.newDraggableIndex,
775    originalEvent = _ref.originalEvent,
776    putSortable = _ref.putSortable,
777    extraEventProperties = _ref.extraEventProperties;
778  sortable = sortable || rootEl && rootEl[expando];
779  if (!sortable) return;
780  var evt,
781    options = sortable.options,
782    onName = 'on' + name.charAt(0).toUpperCase() + name.substr(1);
783  // Support for new CustomEvent feature
784  if (window.CustomEvent && !IE11OrLess && !Edge) {
785    evt = new CustomEvent(name, {
786      bubbles: true,
787      cancelable: true
788    });
789  } else {
790    evt = document.createEvent('Event');
791    evt.initEvent(name, true, true);
792  }
793  evt.to = toEl || rootEl;
794  evt.from = fromEl || rootEl;
795  evt.item = targetEl || rootEl;
796  evt.clone = cloneEl;
797  evt.oldIndex = oldIndex;
798  evt.newIndex = newIndex;
799  evt.oldDraggableIndex = oldDraggableIndex;
800  evt.newDraggableIndex = newDraggableIndex;
801  evt.originalEvent = originalEvent;
802  evt.pullMode = putSortable ? putSortable.lastPutMode : undefined;
803  var allEventProperties = _objectSpread2(_objectSpread2({}, extraEventProperties), PluginManager.getEventProperties(name, sortable));
804  for (var option in allEventProperties) {
805    evt[option] = allEventProperties[option];
806  }
807  if (rootEl) {
808    rootEl.dispatchEvent(evt);
809  }
810  if (options[onName]) {
811    options[onName].call(sortable, evt);
812  }
813}
814
815var _excluded = ["evt"];
816var pluginEvent = function pluginEvent(eventName, sortable) {
817  var _ref = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {},
818    originalEvent = _ref.evt,
819    data = _objectWithoutProperties(_ref, _excluded);
820  PluginManager.pluginEvent.bind(Sortable)(eventName, sortable, _objectSpread2({
821    dragEl: dragEl,
822    parentEl: parentEl,
823    ghostEl: ghostEl,
824    rootEl: rootEl,
825    nextEl: nextEl,
826    lastDownEl: lastDownEl,
827    cloneEl: cloneEl,
828    cloneHidden: cloneHidden,
829    dragStarted: moved,
830    putSortable: putSortable,
831    activeSortable: Sortable.active,
832    originalEvent: originalEvent,
833    oldIndex: oldIndex,
834    oldDraggableIndex: oldDraggableIndex,
835    newIndex: newIndex,
836    newDraggableIndex: newDraggableIndex,
837    hideGhostForTarget: _hideGhostForTarget,
838    unhideGhostForTarget: _unhideGhostForTarget,
839    cloneNowHidden: function cloneNowHidden() {
840      cloneHidden = true;
841    },
842    cloneNowShown: function cloneNowShown() {
843      cloneHidden = false;
844    },
845    dispatchSortableEvent: function dispatchSortableEvent(name) {
846      _dispatchEvent({
847        sortable: sortable,
848        name: name,
849        originalEvent: originalEvent
850      });
851    }
852  }, data));
853};
854function _dispatchEvent(info) {
855  dispatchEvent(_objectSpread2({
856    putSortable: putSortable,
857    cloneEl: cloneEl,
858    targetEl: dragEl,
859    rootEl: rootEl,
860    oldIndex: oldIndex,
861    oldDraggableIndex: oldDraggableIndex,
862    newIndex: newIndex,
863    newDraggableIndex: newDraggableIndex
864  }, info));
865}
866var dragEl,
867  parentEl,
868  ghostEl,
869  rootEl,
870  nextEl,
871  lastDownEl,
872  cloneEl,
873  cloneHidden,
874  oldIndex,
875  newIndex,
876  oldDraggableIndex,
877  newDraggableIndex,
878  activeGroup,
879  putSortable,
880  awaitingDragStarted = false,
881  ignoreNextClick = false,
882  sortables = [],
883  tapEvt,
884  touchEvt,
885  lastDx,
886  lastDy,
887  tapDistanceLeft,
888  tapDistanceTop,
889  moved,
890  lastTarget,
891  lastDirection,
892  pastFirstInvertThresh = false,
893  isCircumstantialInvert = false,
894  targetMoveDistance,
895  // For positioning ghost absolutely
896  ghostRelativeParent,
897  ghostRelativeParentInitialScroll = [],
898  // (left, top)
899
900  _silent = false,
901  savedInputChecked = [];
902
903/** @const */
904var documentExists = typeof document !== 'undefined',
905  PositionGhostAbsolutely = IOS,
906  CSSFloatProperty = Edge || IE11OrLess ? 'cssFloat' : 'float',
907  // This will not pass for IE9, because IE9 DnD only works on anchors
908  supportDraggable = documentExists && !ChromeForAndroid && !IOS && 'draggable' in document.createElement('div'),
909  supportCssPointerEvents = function () {
910    if (!documentExists) return;
911    // false when <= IE11
912    if (IE11OrLess) {
913      return false;
914    }
915    var el = document.createElement('x');
916    el.style.cssText = 'pointer-events:auto';
917    return el.style.pointerEvents === 'auto';
918  }(),
919  _detectDirection = function _detectDirection(el, options) {
920    var elCSS = css(el),
921      elWidth = parseInt(elCSS.width) - parseInt(elCSS.paddingLeft) - parseInt(elCSS.paddingRight) - parseInt(elCSS.borderLeftWidth) - parseInt(elCSS.borderRightWidth),
922      child1 = getChild(el, 0, options),
923      child2 = getChild(el, 1, options),
924      firstChildCSS = child1 && css(child1),
925      secondChildCSS = child2 && css(child2),
926      firstChildWidth = firstChildCSS && parseInt(firstChildCSS.marginLeft) + parseInt(firstChildCSS.marginRight) + getRect(child1).width,
927      secondChildWidth = secondChildCSS && parseInt(secondChildCSS.marginLeft) + parseInt(secondChildCSS.marginRight) + getRect(child2).width;
928    if (elCSS.display === 'flex') {
929      return elCSS.flexDirection === 'column' || elCSS.flexDirection === 'column-reverse' ? 'vertical' : 'horizontal';
930    }
931    if (elCSS.display === 'grid') {
932      return elCSS.gridTemplateColumns.split(' ').length <= 1 ? 'vertical' : 'horizontal';
933    }
934    if (child1 && firstChildCSS["float"] && firstChildCSS["float"] !== 'none') {
935      var touchingSideChild2 = firstChildCSS["float"] === 'left' ? 'left' : 'right';
936      return child2 && (secondChildCSS.clear === 'both' || secondChildCSS.clear === touchingSideChild2) ? 'vertical' : 'horizontal';
937    }
938    return child1 && (firstChildCSS.display === 'block' || firstChildCSS.display === 'flex' || firstChildCSS.display === 'table' || firstChildCSS.display === 'grid' || firstChildWidth >= elWidth && elCSS[CSSFloatProperty] === 'none' || child2 && elCSS[CSSFloatProperty] === 'none' && firstChildWidth + secondChildWidth > elWidth) ? 'vertical' : 'horizontal';
939  },
940  _dragElInRowColumn = function _dragElInRowColumn(dragRect, targetRect, vertical) {
941    var dragElS1Opp = vertical ? dragRect.left : dragRect.top,
942      dragElS2Opp = vertical ? dragRect.right : dragRect.bottom,
943      dragElOppLength = vertical ? dragRect.width : dragRect.height,
944      targetS1Opp = vertical ? targetRect.left : targetRect.top,
945      targetS2Opp = vertical ? targetRect.right : targetRect.bottom,
946      targetOppLength = vertical ? targetRect.width : targetRect.height;
947    return dragElS1Opp === targetS1Opp || dragElS2Opp === targetS2Opp || dragElS1Opp + dragElOppLength / 2 === targetS1Opp + targetOppLength / 2;
948  },
949  /**

962= rect.top - threshold && y <= rect.bottom + threshold;
963      if (insideHorizontally && insideVertically) {
964        return ret = sortable;
965      }
966    });
967    return ret;
968  },
969  _prepareGroup = function _prepareGroup(options) {
970    function toFn(value, pull) {
971      return function (to, from, dragEl, evt) {
972        var sameGroup = to.options.group.name && from.options.group.name && to.options.group.name === from.options.group.name;
973        if (value == null && (pull || sameGroup)) {
974          // Default pull value
975          // Default pull and put value if same group
976          return true;
977        } else if (value == null || value === false) {
978          return false;
979        } else if (pull && value === 'clone') {
980          return value;
981        } else if (typeof value === 'function') {
982          return toFn(value(to, from, dragEl, evt), pull)(to, from, dragEl, evt);
983        } else {
984          var otherGroup = (pull ? to : from).options.group.name;
985          return value === true || typeof value === 'string' && value === otherGroup || value.join && value.indexOf(otherGroup) > -1;
986        }
987      };
988    }
989    var group = {};
990    var originalGroup = options.group;
991    if (!originalGroup || _typeof(originalGroup) != 'object') {
992      originalGroup = {
993        name: originalGroup
994      };
995    }
996    group.name = originalGroup.name;
997    group.checkPull = toFn(originalGroup.pull, true);
998    group.checkPut = toFn(originalGroup.put);
999    group.revertClone = originalGroup.revertClone;
1000    options.group = group;
1001  },
1002  _hideGhostForTarget = function _hideGhostForTarget() {
1003    if (!supportCssPointerEvents && ghostEl) {
1004      css(ghostEl, 'display', 'none');
1005    }
1006  },
1007  _unhideGhostForTarget = function _unhideGhostForTarget() {
1008    if (!supportCssPointerEvents && ghostEl) {
1009      css(ghostEl, 'display', '');
1010    }
1011  };
1012
1013// #1184 fix - Prevent click event on fallback if dragged but item not changed position
1014if (documentExists && !ChromeForAndroid) {
1015  document.addEventListener('click', function (evt) {
1016    if (ignoreNextClick) {
1017      evt.preventDefault();
1018      evt.stopPropagation && evt.stopPropagation();
1019      evt.stopImmediatePropagation && evt.stopImmediatePropagation();
1020      ignoreNextClick = false;
1021      return false;
1022    }
1023  }, true);
1024}
1025var nearestEmptyInsertDetectEvent = function nearestEmptyInsertDetectEvent(evt) {
1026  if (dragEl) {
1027    evt = evt.touches ? evt.touches[0] : evt;
1028    var nearest = _detectNearestEmptySortable(evt.clientX, evt.clientY);
1029    if (nearest) {
1030      // Create imitation event
1031      var event = {};
1032      for (var i in evt) {
1033        if (evt.hasOwnProperty(i)) {
1034          event[i] = evt[i];
1035        }
1036      }
1037      event.target = event.rootEl = nearest;
1038      event.preventDefault = void 0;
1039      event.stopPropagation = void 0;
1040      nearest[expando]._onDragOver(event);
1041    }
1042  }
1043};
1044var _checkOutsideTargetEl = function _checkOutsideTargetEl(evt) {
1045  if (dragEl) {
1046    dragEl.parentNode[expando]._isOutsideThisEl(evt.target);
1047  }
1048};
1049
1050/**
1051 * @class  Sortable
1052 * @param  {HTMLElement}  el
1053 * @param  {Object}       [options]

1053
1054 */
1055function Sortable(el, options) {
1056  if (!(el && el.nodeType && el.nodeType === 1)) {
1057    throw "Sortable: `el` must be an HTMLElement, not ".concat({}.toString.call(el));
1058  }
1059  this.el = el; // root element
1060  this.options = options = _extends({}, options);
1061
1062  // Export instance
1063  el[expando] = this;
1064  var defaults = {
1065    group: null,
1066    sort: true,
1067    disabled: false,
1068    store: null,
1069    handle: null,
1070    draggable: /^[uo]l$/i.test(el.nodeName) ? '>li' : '>*',
1071    swapThreshold: 1,
1072    // percentage; 0 <= x <= 1
1073    invertSwap: false,
1074    // invert always
1075    invertedSwapThreshold: null,
1076    // will be set to same as swapThreshold if default
1077    removeCloneOnHide: true,
1078    direction: function direction() {
1079      return _detectDirection(el, this.options);
1080    },
1081    ghostClass: 'sortable-ghost',
1082    chosenClass: 'sortable-chosen',
1083    dragClass: 'sortable-drag',
1084    ignore: 'a, img',
1085    filter: null,
1086    preventOnFilter: true,
1087    animation: 0,
1088    easing: null,
1089    setData: function setData(dataTransfer, dragEl) {
1090      dataTransfer.setData('Text', dragEl.textContent);
1091    },
1092    dropBubble: false,
1093    dragoverBubble: false,
1094    dataIdAttr: 'data-id',
1095    delay: 0,
1096    delayOnTouchOnly: false,
1097    touchStartThreshold: (Number.parseInt ? Number : window).parseInt(window.devicePixelRatio, 10) || 1,
1098    forceFallback: false,
1099    fallbackClass: 'sortable-fallback',
1100    fallbackOnBody: false,
1101    fallbackTolerance: 0,
1102    fallbackOffset: {
1103      x: 0,
1104      y: 0
1105    },
1106    // Disabled on Safari: #1571; Enabled on Safari IOS: #2244
1107    supportPointer: Sortable.supportPointer !== false && 'PointerEvent' in window && (!Safari || IOS),
1108    emptyInsertThreshold: 5
1109  };
1110  PluginManager.initializePlugins(this, el, defaults);
1111
1112  // Set default options
1113  for (var name in defaults) {
1114    !(name in options) && (options[name] = defaults[name]);
1115  }
1116  _prepareGroup(options);
1117
1118  // Bind all private methods
1119  for (var fn in this) {
1120    if (fn.charAt(0) === '_' && typeof this[fn] === 'function') {
1121      this[fn] = this[fn].bind(this);
1122    }
1123  }
1124
1125  // Setup drag mode
1126  this.nativeDraggable = options.forceFallback ? false : supportDraggable;
1127  if (this.nativeDraggable) {
1128    // Touch start threshold cannot be greater than the native dragstart threshold
1129    this.options.touchStartThreshold = 1;
1130  }
1131
1132  // Bind events
1133  if (options.supportPointer) {
1134    on(el, 'pointerdown', this._onTapStart);
1135  } else {
1136    on(el, 'mousedown', this._onTapStart);
1137    on(el, 'touchstart', this._onTapStart);
1138  }
1139  if (this.nativeDraggable) {
1140    on(el, 'dragover', this);
1141    on(el, 'dragenter', this);
1142  }
1143  sortables.push(this.el);
1144
1145  // Restore sorting
1146  options.store && options.store.get && this.sort(options.store.get(this) || []);
1147
1148  // Add animation state manager
1149  _extends(this, AnimationStateManager());
1150}
1151Sortable.prototype = /** @lends Sortable.prototype */{
1152  constructor: Sortable,
1153  _isOutsideThisEl: function _isOutsideThisEl(target) {
1154    if (!this.el.contains(target) && target !== this.el) {
1155      lastTarget = null;
1156    }
1157  },
1158  _getDirection: function _getDirection(evt, target) {
1159    return typeof this.options.direction === 'function' ? this.options.direction.call(this, evt, target, dragEl) : this.options.direction;
1160  },
1161  _onTapStart: function _onTapStart( /** Event|TouchEvent */evt) {
1162    if (!evt.cancelable) return;
1163    var _this = this,
1164      el = this.el,
1165      options = this.options,
1166      preventOnFilter = options.preventOnFilter,
1167      type = evt.type,
1168      touch = evt.touches && evt.touches[0] || evt.pointerType && evt.pointerType === 'touch' && evt,
1169      target = (touch || evt).target,
1170      originalTarget = evt.target.shadowRoot && (evt.path && evt.path[0] || evt.composedPath && evt.composedPath()[0]) || target,
1171      filter = options.filter;
1172    _saveInputCheckedState(el);
1173
1174    // Don't trigger start event when an element is been dragged, otherwise the evt.oldindex always wrong when set option.group.
1175    if (dragEl) {
1176      return;
1177    }
1178    if (/mousedown|pointerdown/.test(type) && evt.button !== 0 || options.disabled) {
1179      return; // only left button and enabled
1180    }
1181
1182    // cancel dnd if original target is content editable
1183    if (originalTarget.isContentEditable) {
1184      return;
1185    }
1186
1187    // Safari ignores further event handling after mousedown
1188    if (!this.nativeDraggable && Safari && target && target.tagName.toUpperCase() === 'SELECT') {
1189      return;
1190    }
1191    target = closest(target, options.draggable, el, false);
1192    if (target && target.animated) {
1193      return;
1194    }
1195    if (lastDownEl === target) {
1196      // Ignoring duplicate `down`
1197      return;
1198    }
1199
1200    // Get the index of the dragged element within its parent
1201    oldIndex = index(target);
1202    oldDraggableIndex = index(target, options.draggable);
1203
1204    // Check filter
1205    if (typeof filter === 'function') {
1206      if (filter.call(this, evt, target, this)) {
1207        _dispatchEvent({
1208          sortable: _this,
1209          rootEl: originalTarget,
1210          name: 'filter',
1211          targetEl: target,
1212          toEl: el,
1213          fromEl: el
1214        });
1215        pluginEvent('filter', _this, {
1216          evt: evt
1217        });
1218        preventOnFilter && evt.preventDefault();
1219        return; // cancel dnd
1220      }
1221    } else if (filter) {
1222      filter = filter.split(',').some(function (criteria) {
1223        criteria = closest(originalTarget, criteria.trim(), el, false);
1224        if (criteria) {
1225          _dispatchEvent({
1226            sortable: _this,
1227            rootEl: criteria,
1228            name: 'filter',
1229            targetEl: target,
1230            fromEl: el,
1231            toEl: el
1232          });
1233          pluginEvent('filter', _this, {
1234            evt: evt
1235          });
1236          return true;
1237        }
1238      });
1239      if (filter) {
1240        preventOnFilter && evt.preventDefault();
1241        return; // cancel dnd
1242      }
1243    }
1244    if (options.handle && !closest(originalTarget, options.handle, el, false)) {
1245      return;
1246    }
1247
1248    // Prepare `dragstart`
1249    this._prepareDragStart(evt, touch, target);
1250  },
1251  _prepareDragStart: function _prepareDragStart( /** Event */evt, /** Touch */touch, /** HTMLElement */target) {
1252    var _this = this,
1253      el = _this.el,
1254      options = _this.options,
1255      ownerDocument = el.ownerDocument,
1256      dragStartFn;
1257    if (target && !dragEl && target.parentNode === el) {
1258      var dragRect = getRect(target);
1259      rootEl = el;
1260      dragEl = target;
1261      parentEl = dragEl.parentNode;
1262      nextEl = dragEl.nextSibling;
1263      lastDownEl = target;
1264      activeGroup = options.group;
1265      Sortable.dragged = dragEl;
1266      tapEvt = {
1267        target: dragEl,
1268        clientX: (touch || evt).clientX,
1269        clientY: (touch || evt).clientY
1270      };
1271      tapDistanceLeft = tapEvt.clientX - dragRect.left;
1272      tapDistanceTop = tapEvt.clientY - dragRect.top;
1273      this._lastX = (touch || evt).clientX;
1274      this._lastY = (touch || evt).clientY;
1275      dragEl.style['will-change'] = 'all';
1276      dragStartFn = function dragStartFn() {
1277        pluginEvent('delayEnded', _this, {
1278          evt: evt
1279        });
1280        if (Sortable.eventCanceled) {
1281          _this._onDrop();
1282          return;
1283        }
1284        // Delayed drag has been triggered
1285        // we can re-enable the events: touchmove/mousemove
1286        _this._disableDelayedDragEvents();
1287        if (!FireFox && _this.nativeDraggable) {
1288          dragEl.draggable = true;
1289        }
1290
1291        // Bind the events: dragstart/dragend
1292        _this._triggerDragStart(evt, touch);
1293
1294        // Drag start event
1295        _dispatchEvent({
1296          sortable: _this,
1297          name: 'choose',
1298          originalEvent: evt
1299        });
1300
1301        // Chosen item
1302        toggleClass(dragEl, options.chosenClass, true);
1303      };
1304
1305      // Disable "draggable"
1306      options.ignore.split(',').forEach(function (criteria) {
1307        find(dragEl, criteria.trim(), _disableDraggable);
1308      });
1309      on(ownerDocument, 'dragover', nearestEmptyInsertDetectEvent);
1310      on(ownerDocument, 'mousemove', nearestEmptyInsertDetectEvent);
1311      on(ownerDocument, 'touchmove', nearestEmptyInsertDetectEvent);
1312      if (options.supportPointer) {
1313        on(ownerDocument, 'pointerup', _this._onDrop);
1314        // Native D&D triggers pointercancel
1315        !this.nativeDraggable && on(ownerDocument, 'pointercancel', _this._onDrop);
1316      } else {
1317        on(ownerDocument, 'mouseup', _this._onDrop);
1318        on(ownerDocument, 'touchend', _this._onDrop);
1319        on(ownerDocument, 'touchcancel', _this._onDrop);
1320      }
1321
1322      // Make dragEl draggable (must be before delay for FireFox)
1323      if (FireFox && this.nativeDraggable) {
1324        this.options.touchStartThreshold = 4;
1325        dragEl.draggable = true;
1326      }
1327      pluginEvent('delayStart', this, {
1328        evt: evt
1329      });
1330
1331      // Delay is impossible for native DnD in Edge or IE
1332      if (options.delay && (!options.delayOnTouchOnly || touch) && (!this.nativeDraggable || !(Edge || IE11OrLess))) {
1333        if (Sortable.eventCanceled) {
1334          this._onDrop();
1335          return;
1336        }
1337        // If the user moves the pointer or let go the click or touch
1338        // before the delay has been reached:
1339        // disable the delayed drag
1340        if (options.supportPointer) {
1341          on(ownerDocument, 'pointerup', _this._disableDelayedDrag);
1342          on(ownerDocument, 'pointercancel', _this._disableDelayedDrag);
1343        } else {
1344          on(ownerDocument, 'mouseup', _this._disableDelayedDrag);
1345          on(ownerDocument, 'touchend', _this._disableDelayedDrag);
1346          on(ownerDocument, 'touchcancel', _this._disableDelayedDrag);
1347        }
1348        on(ownerDocument, 'mousemove', _this._delayedDragTouchMoveHandler);
1349        on(ownerDocument, 'touchmove', _this._delayedDragTouchMoveHandler);
1350        options.supportPointer && on(ownerDocument, 'pointermove', _this._delayedDragTouchMoveHandler);
1351        _this._dragStartTimer = setTimeout(dragStartFn, options.delay);
1352      } else {
1353        dragStartFn();
1354      }
1355    }
1356  },
1357  _delayedDragTouchMoveHandler: function _delayedDragTouchMoveHandler( /** TouchEvent|PointerEvent **/e) {
1358    var touch = e.touches ? e.touches[0] : e;
1359    if (Math.max(Math.abs(touch.clientX - this._lastX), Math.abs(touch.clientY - this._lastY)) >= Math.floor(this.options.touchStartThreshold / (this.nativeDraggable && window.devicePixelRatio || 1))) {
1360      this._disableDelayedDrag();
1361    }
1362  },
1363  _disableDelayedDrag: function _disableDelayedDrag() {
1364    dragEl && _disableDraggable(dragEl);
1365    clearTimeout(this._dragStartTimer);
1366    this._disableDelayedDragEvents();
1367  },
1368  _disableDelayedDragEvents: function _disableDelayedDragEvents() {
1369    var ownerDocument = this.el.ownerDocument;
1370    off(ownerDocument, 'mouseup', this._disableDelayedDrag);
1371    off(ownerDocument, 'touchend', this._disableDelayedDrag);
1372    off(ownerDocument, 'touchcancel', this._disableDelayedDrag);
1373    off(ownerDocument, 'pointerup', this._disableDelayedDrag);
1374    off(ownerDocument, 'pointercancel', this._disableDelayedDrag);
1375    off(ownerDocument, 'mousemove', this._delayedDragTouchMoveHandler);
1376    off(ownerDocument, 'touchmove', this._delayedDragTouchMoveHandler);
1377    off(ownerDocument, 'pointermove', this._delayedDragTouchMoveHandler);
1378  },
1379  _triggerDragStart: function _triggerDragStart( /** Event */evt, /** Touch */touch) {
1380    touch = touch || evt.pointerType == 'touch' && evt;
1381    if (!this.nativeDraggable || touch) {
1382      if (this.options.supportPointer) {
1383        on(document, 'pointermove', this._onTouchMove);
1384      } else if (touch) {
1385        on(document, 'touchmove', this._onTouchMove);
1386      } else {
1387        on(document, 'mousemove', this._onTouchMove);
1388      }
1389    } else {
1390      on(dragEl, 'dragend', this);
1391      on(rootEl, 'dragstart', this._onDragStart);
1392    }
1393    try {
1394      if (document.selection) {
1395        _nextTick(function () {
1396          document.selection.empty();
1397        });
1398      } else {
1399        window.getSelection().removeAllRanges();
1400      }
1401    } catch (err) {}
1402  },
1403  _dragStarted: function _dragStarted(fallback, evt) {
1404    awaitingDragStarted = false;
1405    if (rootEl && dragEl) {
1406      pluginEvent('dragStarted', this, {
1407        evt: evt
1408      });
1409      if (this.nativeDraggable) {
1410        on(document, 'dragover', _checkOutsideTargetEl);
1411      }
1412      var options = this.options;
1413
1414      // Apply effect
1415      !fallback && toggleClass(dragEl, options.dragClass, false);
1416      toggleClass(dragEl, options.ghostClass, true);
1417      Sortable.active = this;
1418      fallback && this._appendGhost();
1419
1420      // Drag start event
1421      _dispatchEvent({
1422        sortable: this,
1423        name: 'start',
1424        originalEvent: evt
1425      });
1426    } else {
1427      this._nulling();
1428    }
1429  },
1430  _emulateDragOver: function _emulateDragOver() {
1431    if (touchEvt) {
1432      this._lastX = touchEvt.clientX;
1433      this._lastY = touchEvt.clientY;
1434      _hideGhostForTarget();
1435      var target = document.elementFromPoint(touchEvt.clientX, touchEvt.clientY);
1436      var parent = target;
1437      while (target && target.shadowRoot) {
1438        target = target.shadowRoot.elementFromPoint(touchEvt.clientX, touchEvt.clientY);
1439        if (target === parent) break;
1440        parent = target;
1441      }
1442      dragEl.parentNode[expando]._isOutsideThisEl(target);
1443      if (parent) {
1444        do {
1445          if (parent[expando]) {
1446            var inserted = void 0;
1447            inserted = parent[expando]._onDragOver({
1448              clientX: touchEvt.clientX,
1449              clientY: touchEvt.clientY,
1450              target: target,
1451              rootEl: parent
1452            });
1453            if (inserted && !this.options.dragoverBubble) {
1454              break;
1455            }
1456          }
1457          target = parent; // store last element
1458        }
1459        /* jshint boss:true */ while (parent = getParentOrHost(parent));
1460      }
1461      _unhideGhostForTarget();
1462    }
1463  },
1464  _onTouchMove: function _onTouchMove( /**TouchEvent*/evt) {
1465    if (tapEvt) {
1466      var options = this.options,
1467        fallbackTolerance = options.fallbackTolerance,
1468        fallbackOffset = options.fallbackOffset,
1469        touch = evt.touches ? evt.touches[0] : evt,
1470        ghostMatrix = ghostEl && matrix(ghostEl, true),
1471        scaleX = ghostEl && ghostMatrix && ghostMatrix.a,
1472        scaleY = ghostEl && ghostMatrix && ghostMatrix.d,
1473        relativeScrollOffset = PositionGhostAbsolutely && ghostRelativeParent && getRelativeScrollOffset(ghostRelativeParent),
1474        dx = (touch.clientX - tapEvt.clientX + fallbackOffset.x) / (scaleX || 1) + (relativeScrollOffset ? relativeScrollOffset[0] - ghostRelativeParentInitialScroll[0] : 0) / (scaleX || 1),
1475        dy = (touch.clientY - tapEvt.clientY + fallbackOffset.y) / (scaleY || 1) + (relativeScrollOffset ? relativeScrollOffset[1] - ghostRelativeParentInitialScroll[1] : 0) / (scaleY || 1);
1476
1477      // only set the status to dragging, when we are actually dragging
1478      if (!Sortable.active && !awaitingDragStarted) {
1479        if (fallbackTolerance && Math.max(Math.abs(touch.clientX - this._lastX), Math.abs(touch.clientY - this._lastY)) < fallbackTolerance) {
1480          return;
1481        }
1482        this._onDragStart(evt, true);
1483      }
1484      if (ghostEl) {
1485        if (ghostMatrix) {
1486          ghostMatrix.e += dx - (lastDx || 0);
1487          ghostMatrix.f += dy - (lastDy || 0);
1488        } else {
1489          ghostMatrix = {
1490            a: 1,
1491            b: 0,
1492            c: 0,
1493            d: 1,
1494            e: dx,
1495            f: dy
1496          };
1497        }
1498        var cssMatrix = "matrix(".concat(ghostMatrix.a, ",").concat(ghostMatrix.b, ",").concat(ghostMatrix.c, ",").concat(ghostMatrix.d, ",").concat(ghostMatrix.e, ",").concat(ghostMatrix.f, ")");
1499        css(ghostEl, 'webkitTransform', cssMatrix);
1500        css(ghostEl, 'mozTransform', cssMatrix);
1501        css(ghostEl, 'msTransform', cssMatrix);
1502        css(ghostEl, 'transform', cssMatrix);
1503        lastDx = dx;
1504        lastDy = dy;
1505        touchEvt = touch;
1506      }
1507      evt.cancelable && evt.preventDefault();
1508    }
1509  },
1510  _appendGhost: function _appendGhost() {
1511    // Bug if using scale(): https://stackoverflow.com/questions/2637058
1512    // Not being adjusted for
1513    if (!ghostEl) {
1514      var container = this.options.fallbackOnBody ? document.body : rootEl,
1515        rect = getRect(dragEl, true, PositionGhostAbsolutely, true, container),
1516        options = this.options;
1517
1518      // Position absolutely
1519      if (PositionGhostAbsolutely) {
1520        // Get relatively positioned parent
1521        ghostRelativeParent = container;
1522        while (css(ghostRelativeParent, 'position') === 'static' && css(ghostRelativeParent, 'transform') === 'none' && ghostRelativeParent !== document) {
1523          ghostRelativeParent = ghostRelativeParent.parentNode;
1524        }
1525        if (ghostRelativeParent !== document.body && ghostRelativeParent !== document.documentElement) {
1526          if (ghostRelativeParent === document) ghostRelativeParent = getWindowScrollingElement();
1527          rect.top += ghostRelativeParent.scrollTop;
1528          rect.left += ghostRelativeParent.scrollLeft;
1529        } else {
1530          ghostRelativeParent = getWindowScrollingElement();
1531        }
1532        ghostRelativeParentInitialScroll = getRelativeScrollOffset(ghostRelativeParent);
1533      }
1534      ghostEl = dragEl.cloneNode(true);
1535      toggleClass(ghostEl, options.ghostClass, false);
1536      toggleClass(ghostEl, options.fallbackClass, true);
1537      toggleClass(ghostEl, options.dragClass, true);
1538      css(ghostEl, 'transition', '');
1539      css(ghostEl, 'transform', '');
1540      css(ghostEl, 'box-sizing', 'border-box');
1541      css(ghostEl, 'margin', 0);
1542      css(ghostEl, 'top', rect.top);
1543      css(ghostEl, 'left', rect.left);
1544      css(ghostEl, 'width', rect.width);
1545      css(ghostEl, 'height', rect.height);
1546      css(ghostEl, 'opacity', '0.8');
1547      css(ghostEl, 'position', PositionGhostAbsolutely ? 'absolute' : 'fixed');
1548      css(ghostEl, 'zIndex', '100000');
1549      css(ghostEl, 'pointerEvents', 'none');
1550      Sortable.ghost = ghostEl;
1551      container.appendChild(ghostEl);
1552
1553      // Set transform-origin
1554      css(ghostEl, 'transform-origin', tapDistanceLeft / parseInt(ghostEl.style.width) * 100 + '% ' + tapDistanceTop / parseInt(ghostEl.style.height) * 100 + '%');
1555    }
1556  },
1557  _onDragStart: function _onDragStart( /**Event*/evt, /**boolean*/fallback) {
1558    var _this = this;
1559    var dataTransfer = evt.dataTransfer;
1560    var options = _this.options;
1561    pluginEvent('dragStart', this, {
1562      evt: evt
1563    });
1564    if (Sortable.eventCanceled) {
1565      this._onDrop();
1566      return;
1567    }
1568    pluginEvent('setupClone', this);
1569    if (!Sortable.eventCanceled) {
1570      cloneEl = clone(dragEl);
1571      cloneEl.removeAttribute("id");
1572      cloneEl.draggable = false;
1573      cloneEl.style['will-change'] = '';
1574      this._hideClone();
1575      toggleClass(cloneEl, this.options.chosenClass, false);
1576      Sortable.clone = cloneEl;
1577    }
1578
1579    // #1143: IFrame support workaround
1580    _this.cloneId = _nextTick(function () {
1581      pluginEvent('clone', _this);
1582      if (Sortable.eventCanceled) return;
1583      if (!_this.options.removeCloneOnHide) {
1584        rootEl.insertBefore(cloneEl, dragEl);
1585      }
1586      _this._hideClone();
1587      _dispatchEvent({
1588        sortable: _this,
1589        name: 'clone'
1590      });
1591    });
1592    !fallback && toggleClass(dragEl, options.dragClass, true);
1593
1594    // Set proper drop events
1595    if (fallback) {
1596      ignoreNextClick = true;
1597      _this._loopId = setInterval(_this._emulateDragOver, 50);
1598    } else {
1599      // Undo what was set in _prepareDragStart before drag started
1600      off(document, 'mouseup', _this._onDrop);
1601      off(document, 'touchend', _this._onDrop);
1602      off(document, 'touchcancel', _this._onDrop);
1603      if (dataTransfer) {
1604        dataTransfer.effectAllowed = 'move';
1605        options.setData && options.setData.call(_this, dataTransfer, dragEl);
1606      }
1607      on(document, 'drop', _this);
1608
1609      // #1276 fix:
1610      css(dragEl, 'transform', 'translateZ(0)');
1611    }
1612    awaitingDragStarted = true;
1613    _this._dragStartId = _nextTick(_this._dragStarted.bind(_this, fallback, evt));
1614    on(document, 'selectstart', _this);
1615    moved = true;
1616    window.getSelection().removeAllRanges();
1617    if (Safari) {
1618      css(document.body, 'user-select', 'none');
1619    }
1620  },
1621  // Returns true - if no further action is needed (either inserted or another condition)
1622  _onDragOver: function _onDragOver( /**Event*/evt) {
1623    var el = this.el,
1624      target = evt.target,
1625      dragRect,
1626      targetRect,
1627      revert,
1628      options = this.options,
1629      group = options.group,
1630      activeSortable = Sortable.active,
1631      isOwner = activeGroup === group,
1632      canSort = options.sort,
1633      fromSortable = putSortable || activeSortable,
1634      vertical,
1635      _this = this,
1636      completedFired = false;
1637    if (_silent) return;
1638    function dragOverEvent(name, extra) {
1639      pluginEvent(name, _this, _objectSpread2({
1640        evt: evt,
1641        isOwner: isOwner,
1642        axis: vertical ? 'vertical' : 'horizontal',
1643        revert: revert,
1644        dragRect: dragRect,
1645        targetRect: targetRect,
1646        canSort: canSort,
1647        fromSortable: fromSortable,
1648        target: target,
1649        completed: completed,
1650        onMove: function onMove(target, after) {
1651          return _onMove(rootEl, el, dragEl, dragRect, target, getRect(target), evt, after);
1652        },
1653        changed: changed
1654      }, extra));
1655    }
1656
1657    // Capture animation state
1658    function capture() {
1659      dragOverEvent('dragOverAnimationCapture');
1660      _this.captureAnimationState();
1661      if (_this !== fromSortable) {
1662        fromSortable.captureAnimationState();
1663      }
1664    }
1665
1666    // Return invocation when dragEl is inserted (or completed)
1667    function completed(insertion) {
1668      dragOverEvent('dragOverCompleted', {
1669        insertion: insertion
1670      });
1671      if (insertion) {
1672        // Clones must be hidden before folding animation to capture dragRectAbsolute properly
1673        if (isOwner) {
1674          activeSortable._hideClone();
1675        } else {
1676          activeSortable._showClone(_this);
1677        }
1678        if (_this !== fromSortable) {
1679          // Set ghost class to new sortable's ghost class
1680          toggleClass(dragEl, putSortable ? putSortable.options.ghostClass : activeSortable.options.ghostClass, false);
1681          toggleClass(dragEl, options.ghostClass, true);
1682        }
1683        if (putSortable !== _this && _this !== Sortable.active) {
1684          putSortable = _this;
1685        } else if (_this === Sortable.active && putSortable) {
1686          putSortable = null;
1687        }
1688
1689        // Animation
1690        if (fromSortable === _this) {
1691          _this._ignoreWhileAnimating = target;
1692        }
1693        _this.animateAll(function () {
1694          dragOverEvent('dragOverAnimationComplete');
1695          _this._ignoreWhileAnimating = null;
1696        });
1697        if (_this !== fromSortable) {
1698          fromSortable.animateAll();
1699          fromSortable._ignoreWhileAnimating = null;
1700        }
1701      }
1702
1703      // Null lastTarget if it is not inside a previously swapped element
1704      if (target === dragEl && !dragEl.animated || target === el && !target.animated) {
1705        lastTarget = null;
1706      }
1707
1708      // no bubbling and not fallback
1709      if (!options.dragoverBubble && !evt.rootEl && target !== document) {
1710        dragEl.parentNode[expando]._isOutsideThisEl(evt.target);
1711
1712        // Do not detect for empty insert if already inserted
1713        !insertion && nearestEmptyInsertDetectEvent(evt);
1714      }
1715      !options.dragoverBubble && evt.stopPropagation && evt.stopPropagation();
1716      return completedFired = true;
1717    }
1718
1719    // Call when dragEl has been inserted
1720    function changed() {
1721      newIndex = index(dragEl);
1722      newDraggableIndex = index(dragEl, options.draggable);
1723      _dispatchEvent({
1724        sortable: _this,
1725        name: 'change',
1726        toEl: el,
1727        newIndex: newIndex,
1728        newDraggableIndex: newDraggableIndex,
1729        originalEvent: evt
1730      });
1731    }
1732    if (evt.preventDefault !== void 0) {
1733      evt.cancelable && evt.preventDefault();
1734    }
1735    target = closest(target, options.draggable, el, true);
1736    dragOverEvent('dragOver');
1737    if (Sortable.eventCanceled) return completedFired;
1738    if (dragEl.contains(evt.target) || target.animated && target.animatingX && target.animatingY || _this._ignoreWhileAnimating === target) {
1739      return completed(false);
1740    }
1741    ignoreNextClick = false;
1742    if (activeSortable && !options.disabled && (isOwner ? canSort || (revert = parentEl !== rootEl) // Reverting item into the original list
1743    : putSortable === this || (this.lastPutMode = activeGroup.checkPull(this, activeSortable, dragEl, evt)) && group.checkPut(this, activeSortable, dragEl, evt))) {
1744      vertical = this._getDirection(evt, target) === 'vertical';
1745      dragRect = getRect(dragEl);
1746      dragOverEvent('dragOverValid');
1747      if (Sortable.eventCanceled) return completedFired;
1748      if (revert) {
1749        parentEl = rootEl; // actualization
1750        capture();
1751        this._hideClone();
1752        dragOverEvent('revert');
1753        if (!Sortable.eventCanceled) {
1754          if (nextEl) {
1755            rootEl.insertBefore(dragEl, nextEl);
1756          } else {
1757            rootEl.appendChild(dragEl);
1758          }
1759        }
1760        return completed(true);
1761      }
1762      var elLastChild = lastChild(el, options.draggable);
1763      if (!elLastChild || _ghostIsLast(evt, vertical, this) && !elLastChild.animated) {
1764        // Insert to end of list
1765
1766        // If already at end of list: Do not insert
1767        if (elLastChild === dragEl) {
1768          return completed(false);
1769        }
1770
1771        // if there is a last element, it is the target
1772        if (elLastChild && el === evt.target) {
1773          target = elLastChild;
1774        }
1775        if (target) {
1776          targetRect = getRect(target);
1777        }
1778        if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, !!target) !== false) {
1779          capture();
1780          if (elLastChild && elLastChild.nextSibling) {
1781            // the last draggable element is not the last node
1782            el.insertBefore(dragEl, elLastChild.nextSibling);
1783          } else {
1784            el.appendChild(dragEl);
1785          }
1786          parentEl = el; // actualization
1787
1788          changed();
1789          return completed(true);
1790        }
1791      } else if (elLastChild && _ghostIsFirst(evt, vertical, this)) {
1792        // Insert to start of list
1793        var firstChild = getChild(el, 0, options, true);
1794        if (firstChild === dragEl) {
1795          return completed(false);
1796        }
1797        target = firstChild;
1798        targetRect = getRect(target);
1799        if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, false) !== false) {
1800          capture();
1801          el.insertBefore(dragEl, firstChild);
1802          parentEl = el; // actualization
1803
1804          changed();
1805          return completed(true);
1806        }
1807      } else if (target.parentNode === el) {
1808        targetRect = getRect(target);
1809        var direction = 0,
1810          targetBeforeFirstSwap,
1811          differentLevel = dragEl.parentNode !== el,
1812          differentRowCol = !_dragElInRowColumn(dragEl.animated && dragEl.toRect || dragRect, target.animated && target.toRect || targetRect, vertical),
1813          side1 = vertical ? 'top' : 'left',
1814          scrolledPastTop = isScrolledPast(target, 'top', 'top') || isScrolledPast(dragEl, 'top', 'top'),
1815          scrollBefore = scrolledPastTop ? scrolledPastTop.scrollTop : void 0;
1816        if (lastTarget !== target) {
1817          targetBeforeFirstSwap = targetRect[side1];
1818          pastFirstInvertThresh = false;
1819          isCircumstantialInvert = !differentRowCol && options.invertSwap || differentLevel;
1820        }
1821        direction = _getSwapDirection(evt, target, targetRect, vertical, differentRowCol ? 1 : options.swapThreshold, options.invertedSwapThreshold == null ? options.swapThreshold : options.invertedSwapThreshold, isCircumstantialInvert, lastTarget === target);
1822        var sibling;
1823        if (direction !== 0) {
1824          // Check if target is beside dragEl in respective direction (ignoring hidden elements)
1825          var dragIndex = index(dragEl);
1826          do {
1827            dragIndex -= direction;
1828            sibling = parentEl.children[dragIndex];
1829          } while (sibling && (css(sibling, 'display') === 'none' || sibling === ghostEl));
1830        }
1831        // If dragEl is already beside target: Do not insert
1832        if (direction === 0 || sibling === target) {
1833          return completed(false);
1834        }
1835        lastTarget = target;
1836        lastDirection = direction;
1837        var nextSibling = target.nextElementSibling,
1838          after = false;
1839        after = direction === 1;
1840        var moveVector = _onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, after);
1841        if (moveVector !== false) {
1842          if (moveVector === 1 || moveVector === -1) {
1843            after = moveVector === 1;
1844          }
1845          _silent = true;
1846          setTimeout(_unsilent, 30);
1847          capture();
1848          if (after && !nextSibling) {
1849            el.appendChild(dragEl);
1850          } else {
1851            target.parentNode.insertBefore(dragEl, after ? nextSibling : target);
1852          }
1853
1854          // Undo chrome's scroll adjustment (has no effect on other browsers)
1855          if (scrolledPastTop) {
1856            scrollBy(scrolledPastTop, 0, scrollBefore - scrolledPastTop.scrollTop);
1857          }
1858          parentEl = dragEl.parentNode; // actualization
1859
1860          // must be done before animation
1861          if (targetBeforeFirstSwap !== undefined && !isCircumstantialInvert) {
1862            targetMoveDistance = Math.abs(targetBeforeFirstSwap - getRect(target)[side1]);
1863          }
1864          changed();
1865          return completed(true);
1866        }
1867      }
1868      if (el.contains(dragEl)) {
1869        return completed(false);
1870      }
1871    }
1872    return false;
1873  },
1874  _ignoreWhileAnimating: null,
1875  _offMoveEvents: function _offMoveEvents() {
1876    off(document, 'mousemove', this._onTouchMove);
1877    off(document, 'touchmove', this._onTouchMove);
1878    off(document, 'pointermove', this._onTouchMove);
1879    off(document, 'dragover', nearestEmptyInsertDetectEvent);
1880    off(document, 'mousemove', nearestEmptyInsertDetectEvent);
1881    off(document, 'touchmove', nearestEmptyInsertDetectEvent);
1882  },
1883  _offUpEvents: function _offUpEvents() {
1884    var ownerDocument = this.el.ownerDocument;
1885    off(ownerDocument, 'mouseup', this._onDrop);
1886    off(ownerDocument, 'touchend', this._onDrop);
1887    off(ownerDocument, 'pointerup', this._onDrop);
1888    off(ownerDocument, 'pointercancel', this._onDrop);
1889    off(ownerDocument, 'touchcancel', this._onDrop);
1890    off(document, 'selectstart', this);
1891  },
1892  _onDrop: function _onDrop( /**Event*/evt) {
1893    var el = this.el,
1894      options = this.options;
1895
1896    // Get the index of the dragged element within its parent
1897    newIndex = index(dragEl);
1898    newDraggableIndex = index(dragEl, options.draggable);
1899    pluginEvent('drop', this, {
1900      evt: evt
1901    });
1902    parentEl = dragEl && dragEl.parentNode;
1903
1904    // Get again after plugin event
1905    newIndex = index(dragEl);
1906    newDraggableIndex = index(dragEl, options.draggable);
1907    if (Sortable.eventCanceled) {
1908      this._nulling();
1909      return;
1910    }
1911    awaitingDragStarted = false;
1912    isCircumstantialInvert = false;
1913    pastFirstInvertThresh = false;
1914    clearInterval(this._loopId);
1915    clearTimeout(this._dragStartTimer);
1916    _cancelNextTick(this.cloneId);
1917    _cancelNextTick(this._dragStartId);
1918
1919    // Unbind events
1920    if (this.nativeDraggable) {
1921      off(document, 'drop', this);
1922      off(el, 'dragstart', this._onDragStart);
1923    }
1924    this._offMoveEvents();
1925    this._offUpEvents();
1926    if (Safari) {
1927      css(document.body, 'user-select', '');
1928    }
1929    css(dragEl, 'transform', '');
1930    if (evt) {
1931      if (moved) {
1932        evt.cancelable && evt.preventDefault();
1933        !options.dropBubble && evt.stopPropagation();
1934      }
1935      ghostEl && ghostEl.parentNode && ghostEl.parentNode.removeChild(ghostEl);
1936      if (rootEl === parentEl || putSortable && putSortable.lastPutMode !== 'clone') {
1937        // Remove clone(s)
1938        cloneEl && cloneEl.parentNode && cloneEl.parentNode.removeChild(cloneEl);
1939      }
1940      if (dragEl) {
1941        if (this.nativeDraggable) {
1942          off(dragEl, 'dragend', this);
1943        }
1944        _disableDraggable(dragEl);
1945        dragEl.style['will-change'] = '';
1946
1947        // Remove classes
1948        // ghostClass is added in dragStarted
1949        if (moved && !awaitingDragStarted) {
1950          toggleClass(dragEl, putSortable ? putSortable.options.ghostClass : this.options.ghostClass, false);
1951        }
1952        toggleClass(dragEl, this.options.chosenClass, false);
1953
1954        // Drag stop event
1955        _dispatchEvent({
1956          sortable: this,
1957          name: 'unchoose',
1958          toEl: parentEl,
1959          newIndex: null,
1960          newDraggableIndex: null,
1961          originalEvent: evt
1962        });
1963        if (rootEl !== parentEl) {
1964          if (newIndex >= 0) {
1965            // Add event
1966            _dispatchEvent({
1967              rootEl: parentEl,
1968              name: 'add',
1969              toEl: parentEl,
1970              fromEl: rootEl,
1971              originalEvent: evt
1972            });
1973
1974            // Remove event
1975            _dispatchEvent({
1976              sortable: this,
1977              name: 'remove',
1978              toEl: parentEl,
1979              originalEvent: evt
1980            });
1981
1982            // drag from one list and drop into another
1983            _dispatchEvent({
1984              rootEl: parentEl,
1985              name: 'sort',
1986              toEl: parentEl,
1987              fromEl: rootEl,
1988              originalEvent: evt
1989            });
1990            _dispatchEvent({
1991              sortable: this,
1992              name: 'sort',
1993              toEl: parentEl,
1994              originalEvent: evt
1995            });
1996          }
1997          putSortable && putSortable.save();
1998        } else {
1999          if (newIndex !== oldIndex) {
2000            if (newIndex >= 0) {
2001              // drag & drop within the same list
2002              _dispatchEvent({
2003                sortable: this,
2004                name: 'update',
2005                toEl: parentEl,
2006                originalEvent: evt
2007              });
2008              _dispatchEvent({
2009                sortable: this,
2010                name: 'sort',
2011                toEl: parentEl,
2012                originalEvent: evt
2013              });
2014            }
2015          }
2016        }
2017        if (Sortable.active) {
2018          /* jshint eqnull:true */
2019          if (newIndex == null || newIndex === -1) {
2020            newIndex = oldIndex;
2021            newDraggableIndex = oldDraggableIndex;
2022          }
2023          _dispatchEvent({
2024            sortable: this,
2025            name: 'end',
2026            toEl: parentEl,
2027            originalEvent: evt
2028          });
2029
2030          // Save sorting
2031          this.save();
2032        }
2033      }
2034    }
2035    this._nulling();
2036  },
2037  _nulling: function _nulling() {
2038    pluginEvent('nulling', this);
2039    rootEl = dragEl = parentEl = ghostEl = nextEl = cloneEl = lastDownEl = cloneHidden = tapEvt = touchEvt = moved = newIndex = newDraggableIndex = oldIndex = oldDraggableIndex = lastTarget = lastDirection = putSortable = activeGroup = Sortable.dragged = Sortable.ghost = Sortable.clone = Sortable.active = null;
2040    var el = this.el;
2041    savedInputChecked.forEach(function (checkEl) {
2042      if (el.contains(checkEl)) {
2043        checkEl.checked = true;
2044      }
2045    });
2046    savedInputChecked.length = lastDx = lastDy = 0;
2047  },
2048  handleEvent: function handleEvent( /**Event*/evt) {
2049    switch (evt.type) {
2050      case 'drop':
2051      case 'dragend':
2052        this._onDrop(evt);
2053        break;
2054      case 'dragenter':
2055      case 'dragover':
2056        if (dragEl) {
2057          this._onDragOver(evt);
2058          _globalDragOver(evt);
2059        }
2060        break;
2061      case 'selectstart':
2062        evt.preventDefault();
2063        break;
2064    }
2065  },
2066  /**

2066
2067   * Serializes the item into an array of string.
2068   * @returns {String[]}
2069   */
2070  toArray: function toArray() {
2071    var order = [],
2072      el,
2073      children = this.el.children,
2074      i = 0,
2075      n = children.length,
2076      options = this.options;
2077    for (; i < n; i++) {
2078      el = children[i];
2079      if (closest(el, options.draggable, this.el, false)) {
2080        order.push(el.getAttribute(options.dataIdAttr) || _generateId(el));
2081      }
2082    }
2083    return order;
2084  },
2085  /**
2086   * Sorts the elements according to the array.
2087   * @param  {String[]}  order  order of the items
2088   */
2089  sort: function sort(order, useAnimation) {
2090    var items = {},
2091      rootEl = this.el;
2092    this.toArray().forEach(function (id, i) {
2093      var el = rootEl.children[i];
2094      if (closest(el, this.options.draggable, rootEl, false)) {
2095        items[id] = el;
2096      }
2097    }, this);
2098    useAnimation && this.captureAnimationState();
2099    order.forEach(function (id) {
2100      if (items[id]) {
2101        rootEl.removeChild(items[id]);
2102        rootEl.appendChild(items[id]);
2103      }
2104    });
2105    useAnimation && this.animateAll();
2106  },
2107  /**
2108   * Save the current sorting
2109   */
2110  save: function save() {
2111    var store = this.options.store;
2112    store && store.set && store.set(this);
2113  },
2114  /**
2115   * For each element in the set, get the first element that matches the selector by testing the element itself and traversing up through its ancestors in the DOM tree.
2116   * @param   {HTMLElement}  el
2117   * @param   {String}       [selector]  default: `options.draggable`
2118   * @returns {HTMLElement|null}
2119   */
2120  closest: function closest$1(el, selector) {
2121    return closest(el, selector || this.options.draggable, this.el, false);
2122  },
2123  /**
2124   * Set/get option
2125   * @param   {string} name
2126   * @param   {*}      [value]
2127   * @returns {*}
2128   */
2129  option: function option(name, value) {
2130    var options = this.options;
2131    if (value === void 0) {
2132      return options[name];
2133    } else {
2134      var modifiedValue = PluginManager.modifyOption(this, name, value);
2135      if (typeof modifiedValue !== 'undefined') {
2136        options[name] = modifiedValue;
2137      } else {
2138        options[name] = value;
2139      }
2140      if (name === 'group') {
2141        _prepareGroup(options);
2142      }
2143    }
2144  },
2145  /**
2146   * Destroy
2147   */
2148  destroy: function destroy() {
2149    pluginEvent('destroy', this);
2150    var el = this.el;
2151    el[expando] = null;
2152    off(el, 'mousedown', this._onTapStart);
2153    off(el, 'touchstart', this._onTapStart);
2154    off(el, 'pointerdown', this._onTapStart);
2155    if (this.nativeDraggable) {
2156      off(el, 'dragover', this);
2157      off(el, 'dragenter', this);
2158    }
2159    // Remove draggable attributes
2160    Array.prototype.forEach.call(el.querySelectorAll('[draggable]'), function (el) {
2161      el.removeAttribute('draggable');
2162    });
2163    this._onDrop();
2164    this._disableDelayedDragEvents();
2165    sortables.splice(sortables.indexOf(this.el), 1);
2166    this.el = el = null;
2167  },
2168  _hideClone: function _hideClone() {
2169    if (!cloneHidden) {
2170      pluginEvent('hideClone', this);
2171      if (Sortable.eventCanceled) return;
2172      css(cloneEl, 'display', 'none');
2173      if (this.options.removeCloneOnHide && cloneEl.parentNode) {
2174        cloneEl.parentNode.removeChild(cloneEl);
2175      }
2176      cloneHidden = true;
2177    }
2178  },
2179  _showClone: function _showClone(putSortable) {
2180    if (putSortable.lastPutMode !== 'clone') {
2181      this._hideClone();
2182      return;
2183    }
2184    if (cloneHidden) {
2185      pluginEvent('showClone', this);
2186      if (Sortable.eventCanceled) return;
2187
2188      // show clone at dragEl or original position
2189      if (dragEl.parentNode == rootEl && !this.options.group.revertClone) {
2190        rootEl.insertBefore(cloneEl, dragEl);
2191      } else if (nextEl) {
2192        rootEl.insertBefore(cloneEl, nextEl);
2193      } else {
2194        rootEl.appendChild(cloneEl);
2195      }
2196      if (this.options.group.revertClone) {
2197        this.animate(dragEl, cloneEl);
2198      }
2199      css(cloneEl, 'display', '');
2200      cloneHidden = false;
2201    }
2202  }
2203};
2204function _globalDragOver( /**Event*/evt) {
2205  if (evt.dataTransfer) {
2206    evt.dataTransfer.dropEffect = 'move';
2207  }
2208  evt.cancelable && evt.preventDefault();
2209}
2210function _onMove(fromEl, toEl, dragEl, dragRect, targetEl, targetRect, originalEvent, willInsertAfter) {
2211  var evt,
2212    sortable = fromEl[expando],
2213    onMoveFn = sortable.options.onMove,
2214    retVal;
2215  // Support for new CustomEvent feature
2216  if (window.CustomEvent && !IE11OrLess && !Edge) {
2217    evt = new CustomEvent('move', {
2218      bubbles: true,
2219      cancelable: true
2220    });
2221  } else {
2222    evt = document.createEvent('Event');
2223    evt.initEvent('move', true, true);
2224  }
2225  evt.to = toEl;
2226  evt.from = fromEl;
2227  evt.dragged = dragEl;
2228  evt.draggedRect = dragRect;
2229  evt.related = targetEl || toEl;
2230  evt.relatedRect = targetRect || getRect(toEl);
2231  evt.willInsertAfter = willInsertAfter;
2232  evt.originalEvent = originalEvent;
2233  fromEl.dispatchEvent(evt);
2234  if (onMoveFn) {
2235    retVal = onMoveFn.call(sortable, evt, originalEvent);
2236  }
2237  return retVal;
2238}
2239function _disableDraggable(el) {
2240  el.draggable = false;
2241}
2242function _unsilent() {
2243  _silent = false;
2244}
2245function _ghostIsFirst(evt, vertical, sortable) {
2246  var firstElRect = getRect(getChild(sortable.el, 0, sortable.options, true));
2247  var childContainingRect = getChildContainingRectFromElement(sortable.el, sortable.options, ghostEl);
2248  var spacer = 10;
2249  return vertical ? evt.clientX < childContainingRect.left - spacer || evt.clientY < firstElRect.top && evt.clientX < firstElRect.right : evt.clientY < childContainingRect.top - spacer || evt.clientY < firstElRect.bottom && evt.clientX < firstElRect.left;
2250}
2251function _ghostIsLast(evt, vertical, sortable) {
2252  var lastElRect = getRect(lastChild(sortable.el, sortable.options.draggable));
2253  var childContainingRect = getChildContainingRectFromElement(sortable.el, sortable.options, ghostEl);
2254  var spacer = 10;
2255  return vertical ? evt.clientX > childContainingRect.right + spacer || evt.clientY > lastElRect.bottom && evt.clientX > lastElRect.left : evt.clientY > childContainingRect.bottom + spacer || evt.clientX > lastElRect.right && evt.clientY > lastElRect.top;
2256}
2257function _getSwapDirection(evt, target, targetRect, vertical, swapThreshold, invertedSwapThreshold, invertSwap, isLastTarget) {
2258  var mouseOnAxis = vertical ? evt.clientY : evt.clientX,
2259    targetLength = vertical ? targetRect.height : targetRect.width,
2260    targetS1 = vertical ? targetRect.top : targetRect.left,
2261    targetS2 = vertical ? targetRect.bottom : targetRect.right,
2262    invert = false;
2263  if (!invertSwap) {
2264    // Never invert or create dragEl shadow when target movemenet causes mouse to move past the end of regular swapThreshold
2265    if (isLastTarget && targetMoveDistance < targetLength * swapThreshold) {
2266      // multiplied only by swapThreshold because mouse will already be inside target by (1 - threshold) * targetLength / 2
2267      // check if past first invert threshold on side opposite of lastDirection
2268      if (!pastFirstInvertThresh && (lastDirection === 1 ? mouseOnAxis > targetS1 + targetLength * invertedSwapThreshold / 2 : mouseOnAxis < targetS2 - targetLength * invertedSwapThreshold / 2)) {
2269        // past first invert threshold, do not restrict inverted threshold to dragEl shadow
2270        pastFirstInvertThresh = true;
2271      }
2272      if (!pastFirstInvertThresh) {
2273        // dragEl shadow (target move distance shadow)
2274        if (lastDirection === 1 ? mouseOnAxis < targetS1 + targetMoveDistance // over dragEl shadow
2275        : mouseOnAxis > targetS2 - targetMoveDistance) {
2276          return -lastDirection;
2277        }
2278      } else {
2279        invert = true;
2280      }
2281    } else {
2282      // Regular
2283      if (mouseOnAxis > targetS1 + targetLength * (1 - swapThreshold) / 2 && mouseOnAxis < targetS2 - targetLength * (1 - swapThreshold) / 2) {
2284        return _getInsertDirection(target);
2285      }
2286    }
2287  }
2288  invert = invert || invertSwap;
2289  if (invert) {
2290    // Invert of regular
2291    if (mouseOnAxis < targetS1 + targetLength * invertedSwapThreshold / 2 || mouseOnAxis > targetS2 - targetLength * invertedSwapThreshold / 2) {
2292      return mouseOnAxis > targetS1 + targetLength / 2 ? 1 : -1;
2293    }
2294  }
2295  return 0;
2296}
2297
2298/**
2299 * Gets the direction dragEl must be swapped relative to target in order to make it
2300 * seem that dragEl has been "inserted" into that element's position
2301 * @param  {HTMLElement} target       The target whose position dragEl is being inserted at
2302 * @return {Number}                   Direction dragEl must be swapped
2303 */
2304function _getInsertDirection(target) {
2305  if (index(dragEl) < index(target)) {
2306    return 1;
2307  } else {
2308    return -1;
2309  }
2310}
2311
2312/**
2313 * Generate id
2314 * @param   {HTMLElement} el
2315 * @returns {String}
2316 * @private
2317 */
2318function _generateId(el) {
2319  var str = el.tagName + el.className + el.src + el.href + el.textContent,
2320    i = str.length,
2321    sum = 0;
2322  while (i--) {
2323    sum += str.charCodeAt(i);
2324  }
2325  return sum.toString(36);
2326}
2327function _saveInputCheckedState(root) {
2328  savedInputChecked.length = 0;
2329  var inputs = root.getElementsByTagName('input');
2330  var idx = inputs.length;
2331  while (idx--) {
2332    var el = inputs[idx];
2333    el.checked && savedInputChecked.push(el);
2334  }
2335}
2336function _nextTick(fn) {
2337  return setTimeout(fn, 0);
2338}
2339function _cancelNextTick(id) {
2340  return clearTimeout(id);
2341}
2342
2343// Fixed #973:
2344if (documentExists) {
2345  on(document, 'touchmove', function (evt) {
2346    if ((Sortable.active || awaitingDragStarted) && evt.cancelable) {
2347      evt.preventDefault();
2348    }
2349  });
2350}
2351
2352// Export utils
2353Sortable.utils = {
2354  on: on,
2355  off: off,
2356  css: css,
2357  find: find,
2358  is: function is(el, selector) {
2359    return !!closest(el, selector, el, false);
2360  },
2361  extend: extend,
2362  throttle: throttle,
2363  closest: closest,
2364  toggleClass: toggleClass,
2365  clone: clone,
2366  index: index,
2367  nextTick: _nextTick,
2368  cancelNextTick: _cancelNextTick,
2369  detectDirection: _detectDirection,
2370  getChild: getChild,
2371  expando: expando
2372};
2373
2374/**
2375 * Get the Sortable instance of an element
2376 * @param  {HTMLElement} element The element
2377 * @return {Sortable|undefined}         The instance of Sortable
2378 */
2379Sortable.get = function (element) {
2380  return element[expando];
2381};
2382
2383/**
2384 * Mount a plugin to Sortable
2385 * @param  {...SortablePlugin|SortablePlugin[]} plugins       Plugins being mounted
2386 */
2387Sortable.mount = function () {
2388  for (var _len = arguments.length, plugins = new Array(_len), _key = 0; _key < _len; _key++) {
2389    plugins[_key] = arguments[_key];
2390  }
2391  if (plugins[0].constructor === Array) plugins = plugins[0];
2392  plugins.forEach(function (plugin) {
2393    if (!plugin.prototype || !plugin.prototype.constructor) {
2394      throw "Sortable: Mounted plugin must be a constructor function, not ".concat({}.toString.call(plugin));
2395    }
2396    if (plugin.utils) Sortable.utils = _objectSpread2(_objectSpread2({}, Sortable.utils), plugin.utils);
2397    PluginManager.mount(plugin);
2398  });
2399};
2400
2401/**
2402 * Create sortable instance
2403 * @param {HTMLElement}  el
2404 * @param {Object}      [options]

2404
2405 */
2406Sortable.create = function (el, options) {
2407  return new Sortable(el, options);
2408};
2409
2410// Export
2411Sortable.version = version;
2412
2413var autoScrolls = [],
2414  scrollEl,
2415  scrollRootEl,
2416  scrolling = false,
2417  lastAutoScrollX,
2418  lastAutoScrollY,
2419  touchEvt$1,
2420  pointerElemChangedInterval;
2421function AutoScrollPlugin() {
2422  function AutoScroll() {
2423    this.defaults = {
2424      scroll: true,
2425      forceAutoScrollFallback: false,
2426      scrollSensitivity: 30,
2427      scrollSpeed: 10,
2428      bubbleScroll: true
2429    };
2430
2431    // Bind all private methods
2432    for (var fn in this) {
2433      if (fn.charAt(0) === '_' && typeof this[fn] === 'function') {
2434        this[fn] = this[fn].bind(this);
2435      }
2436    }
2437  }
2438  AutoScroll.prototype = {
2439    dragStarted: function dragStarted(_ref) {
2440      var originalEvent = _ref.originalEvent;
2441      if (this.sortable.nativeDraggable) {
2442        on(document, 'dragover', this._handleAutoScroll);
2443      } else {
2444        if (this.options.supportPointer) {
2445          on(document, 'pointermove', this._handleFallbackAutoScroll);
2446        } else if (originalEvent.touches) {
2447          on(document, 'touchmove', this._handleFallbackAutoScroll);
2448        } else {
2449          on(document, 'mousemove', this._handleFallbackAutoScroll);
2450        }
2451      }
2452    },
2453    dragOverCompleted: function dragOverCompleted(_ref2) {
2454      var originalEvent = _ref2.originalEvent;
2455      // For when bubbling is canceled and using fallback (fallback 'touchmove' always reached)
2456      if (!this.options.dragOverBubble && !originalEvent.rootEl) {
2457        this._handleAutoScroll(originalEvent);
2458      }
2459    },
2460    drop: function drop() {
2461      if (this.sortable.nativeDraggable) {
2462        off(document, 'dragover', this._handleAutoScroll);
2463      } else {
2464        off(document, 'pointermove', this._handleFallbackAutoScroll);
2465        off(document, 'touchmove', this._handleFallbackAutoScroll);
2466        off(document, 'mousemove', this._handleFallbackAutoScroll);
2467      }
2468      clearPointerElemChangedInterval();
2469      clearAutoScrolls();
2470      cancelThrottle();
2471    },
2472    nulling: function nulling() {
2473      touchEvt$1 = scrollRootEl = scrollEl = scrolling = pointerElemChangedInterval = lastAutoScrollX = lastAutoScrollY = null;
2474      autoScrolls.length = 0;
2475    },
2476    _handleFallbackAutoScroll: function _handleFallbackAutoScroll(evt) {
2477      this._handleAutoScroll(evt, true);
2478    },
2479    _handleAutoScroll: function _handleAutoScroll(evt, fallback) {
2480      var _this = this;
2481      var x = (evt.touches ? evt.touches[0] : evt).clientX,
2482        y = (evt.touches ? evt.touches[0] : evt).clientY,
2483        elem = document.elementFromPoint(x, y);
2484      touchEvt$1 = evt;
2485
2486      // IE does not seem to have native autoscroll,
2487      // Edge's autoscroll seems too conditional,
2488      // MACOS Safari does not have autoscroll,
2489      // Firefox and Chrome are good
2490      if (fallback || this.options.forceAutoScrollFallback || Edge || IE11OrLess || Safari) {
2491        autoScroll(evt, this.options, elem, fallback);
2492
2493        // Listener for pointer element change
2494        var ogElemScroller = getParentAutoScrollElement(elem, true);
2495        if (scrolling && (!pointerElemChangedInterval || x !== lastAutoScrollX || y !== lastAutoScrollY)) {
2496          pointerElemChangedInterval && clearPointerElemChangedInterval();
2497          // Detect for pointer elem change, emulating native DnD behaviour
2498          pointerElemChangedInterval = setInterval(function () {
2499            var newElem = getParentAutoScrollElement(document.elementFromPoint(x, y), true);
2500            if (newElem !== ogElemScroller) {
2501              ogElemScroller = newElem;
2502              clearAutoScrolls();
2503            }
2504            autoScroll(evt, _this.options, newElem, fallback);
2505          }, 10);
2506          lastAutoScrollX = x;
2507          lastAutoScrollY = y;
2508        }
2509      } else {
2510        // if DnD is enabled (and browser has good autoscrolling), first autoscroll will already scroll, so get parent autoscroll of first autoscroll
2511        if (!this.options.bubbleScroll || getParentAutoScrollElement(elem, true) === getWindowScrollingElement()) {
2512          clearAutoScrolls();
2513          return;
2514        }
2515        autoScroll(evt, this.options, getParentAutoScrollElement(elem, false), false);
2516      }
2517    }
2518  };
2519  return _extends(AutoScroll, {
2520    pluginName: 'scroll',
2521    initializeByDefault: true
2522  });
2523}
2524function clearAutoScrolls() {
2525  autoScrolls.forEach(function (autoScroll) {
2526    clearInterval(autoScroll.pid);
2527  });
2528  autoScrolls = [];
2529}
2530function clearPointerElemChangedInterval() {
2531  clearInterval(pointerElemChangedInterval);
2532}
2533var autoScroll = throttle(function (evt, options, rootEl, isFallback) {
2534  // Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=505521
2535  if (!options.scroll) return;
2536  var x = (evt.touches ? evt.touches[0] : evt).clientX,
2537    y = (evt.touches ? evt.touches[0] : evt).clientY,
2538    sens = options.scrollSensitivity,
2539    speed = options.scrollSpeed,
2540    winScroller = getWindowScrollingElement();
2541  var scrollThisInstance = false,
2542    scrollCustomFn;
2543
2544  // New scroll root, set scrollEl
2545  if (scrollRootEl !== rootEl) {
2546    scrollRootEl = rootEl;
2547    clearAutoScrolls();
2548    scrollEl = options.scroll;
2549    scrollCustomFn = options.scrollFn;
2550    if (scrollEl === true) {
2551      scrollEl = getParentAutoScrollElement(rootEl, true);
2552    }
2553  }
2554  var layersOut = 0;
2555  var currentParent = scrollEl;
2556  do {
2557    var el = currentParent,
2558      rect = getRect(el),
2559      top = rect.top,
2560      bottom = rect.bottom,
2561      left = rect.left,
2562      right = rect.right,
2563      width = rect.width,
2564      height = rect.height,
2565      canScrollX = void 0,
2566      canScrollY = void 0,
2567      scrollWidth = el.scrollWidth,
2568      scrollHeight = el.scrollHeight,
2569      elCSS = css(el),
2570      scrollPosX = el.scrollLeft,
2571      scrollPosY = el.scrollTop;
2572    if (el === winScroller) {
2573      canScrollX = width < scrollWidth && (elCSS.overflowX === 'auto' || elCSS.overflowX === 'scroll' || elCSS.overflowX === 'visible');
2574      canScrollY = height < scrollHeight && (elCSS.overflowY === 'auto' || elCSS.overflowY === 'scroll' || elCSS.overflowY === 'visible');
2575    } else {
2576      canScrollX = width < scrollWidth && (elCSS.overflowX === 'auto' || elCSS.overflowX === 'scroll');
2577      canScrollY = height < scrollHeight && (elCSS.overflowY === 'auto' || elCSS.overflowY === 'scroll');
2578    }
2579    var vx = canScrollX && (Math.abs(right - x) <= sens && scrollPosX + width < scrollWidth) - (Math.abs(left - x) <= sens && !!scrollPosX);
2580    var vy = canScrollY && (Math.abs(bottom - y) <= sens && scrollPosY + height < scrollHeight) - (Math.abs(top - y) <= sens && !!scrollPosY);
2581    if (!autoScrolls[layersOut]) {
2582      for (var i = 0; i <= layersOut; i++) {
2583        if (!autoScrolls[i]) {
2584          autoScrolls[i] = {};
2585        }
2586      }
2587    }
2588    if (autoScrolls[layersOut].vx != vx || autoScrolls[layersOut].vy != vy || autoScrolls[layersOut].el !== el) {
2589      autoScrolls[layersOut].el = el;
2590      autoScrolls[layersOut].vx = vx;
2591      autoScrolls[layersOut].vy = vy;
2592      clearInterval(autoScrolls[layersOut].pid);
2593      if (vx != 0 || vy != 0) {
2594        scrollThisInstance = true;
2595        /* jshint loopfunc:true */
2596        autoScrolls[layersOut].pid = setInterval(function () {
2597          // emulate drag over during autoscroll (fallback), emulating native DnD behaviour
2598          if (isFallback && this.layer === 0) {
2599            Sortable.active._onTouchMove(touchEvt$1); // To move ghost if it is positioned absolutely
2600          }
2601          var scrollOffsetY = autoScrolls[this.layer].vy ? autoScrolls[this.layer].vy * speed : 0;
2602          var scrollOffsetX = autoScrolls[this.layer].vx ? autoScrolls[this.layer].vx * speed : 0;
2603          if (typeof scrollCustomFn === 'function') {
2604            if (scrollCustomFn.call(Sortable.dragged.parentNode[expando], scrollOffsetX, scrollOffsetY, evt, touchEvt$1, autoScrolls[this.layer].el) !== 'continue') {
2605              return;
2606            }
2607          }
2608          scrollBy(autoScrolls[this.layer].el, scrollOffsetX, scrollOffsetY);
2609        }.bind({
2610          layer: layersOut
2611        }), 24);
2612      }
2613    }
2614    layersOut++;
2615  } while (options.bubbleScroll && currentParent !== winScroller && (currentParent = getParentAutoScrollElement(currentParent, false)));
2616  scrolling = scrollThisInstance; // in case another function catches scrolling as false in between when it is not
2617}, 30);
2618
2619var drop = function drop(_ref) {
2620  var originalEvent = _ref.originalEvent,
2621    putSortable = _ref.putSortable,
2622    dragEl = _ref.dragEl,
2623    activeSortable = _ref.activeSortable,
2624    dispatchSortableEvent = _ref.dispatchSortableEvent,
2625    hideGhostForTarget = _ref.hideGhostForTarget,
2626    unhideGhostForTarget = _ref.unhideGhostForTarget;
2627  if (!originalEvent) return;
2628  var toSortable = putSortable || activeSortable;
2629  hideGhostForTarget();
2630  var touch = originalEvent.changedTouches && originalEvent.changedTouches.length ? originalEvent.changedTouches[0] : originalEvent;
2631  var target = document.elementFromPoint(touch.clientX, touch.clientY);
2632  unhideGhostForTarget();
2633  if (toSortable && !toSortable.el.contains(target)) {
2634    dispatchSortableEvent('spill');
2635    this.onSpill({
2636      dragEl: dragEl,
2637      putSortable: putSortable
2638    });
2639  }
2640};
2641function Revert() {}
2642Revert.prototype = {
2643  startIndex: null,
2644  dragStart: function dragStart(_ref2) {
2645    var oldDraggableIndex = _ref2.oldDraggableIndex;
2646    this.startIndex = oldDraggableIndex;
2647  },
2648  onSpill: function onSpill(_ref3) {
2649    var dragEl = _ref3.dragEl,
2650      putSortable = _ref3.putSortable;
2651    this.sortable.captureAnimationState();
2652    if (putSortable) {
2653      putSortable.captureAnimationState();
2654    }
2655    var nextSibling = getChild(this.sortable.el, this.startIndex, this.options);
2656    if (nextSibling) {
2657      this.sortable.el.insertBefore(dragEl, nextSibling);
2658    } else {
2659      this.sortable.el.appendChild(dragEl);
2660    }
2661    this.sortable.animateAll();
2662    if (putSortable) {
2663      putSortable.animateAll();
2664    }
2665  },
2666  drop: drop
2667};
2668_extends(Revert, {
2669  pluginName: 'revertOnSpill'
2670});
2671function Remove() {}
2672Remove.prototype = {
2673  onSpill: function onSpill(_ref4) {
2674    var dragEl = _ref4.dragEl,
2675      putSortable = _ref4.putSortable;
2676    var parentSortable = putSortable || this.sortable;
2677    parentSortable.captureAnimationState();
2678    dragEl.parentNode && dragEl.parentNode.removeChild(dragEl);
2679    parentSortable.animateAll();
2680  },
2681  drop: drop
2682};
2683_extends(Remove, {
2684  pluginName: 'removeOnSpill'
2685});
2686