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diff --git a/vendor/assets/javascripts/Sortable.js b/vendor/assets/javascripts/Sortable.js
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+/**!
+ * Sortable
+ * @author RubaXa <trash@rubaxa.org>
+ * @license MIT
+ */
+
+
+(function (factory) {
+ "use strict";
+
+ if (typeof define === "function" && define.amd) {
+ define(factory);
+ }
+ else if (typeof module != "undefined" && typeof module.exports != "undefined") {
+ module.exports = factory();
+ }
+ else if (typeof Package !== "undefined") {
+ Sortable = factory(); // export for Meteor.js
+ }
+ else {
+ /* jshint sub:true */
+ window["Sortable"] = factory();
+ }
+})(function () {
+ "use strict";
+
+ var dragEl,
+ parentEl,
+ ghostEl,
+ cloneEl,
+ rootEl,
+ nextEl,
+
+ scrollEl,
+ scrollParentEl,
+
+ lastEl,
+ lastCSS,
+ lastParentCSS,
+
+ oldIndex,
+ newIndex,
+
+ activeGroup,
+ autoScroll = {},
+
+ tapEvt,
+ touchEvt,
+
+ moved,
+
+ /** @const */
+ RSPACE = /\s+/g,
+
+ expando = 'Sortable' + (new Date).getTime(),
+
+ win = window,
+ document = win.document,
+ parseInt = win.parseInt,
+
+ supportDraggable = !!('draggable' in document.createElement('div')),
+ supportCssPointerEvents = (function (el) {
+ el = document.createElement('x');
+ el.style.cssText = 'pointer-events:auto';
+ return el.style.pointerEvents === 'auto';
+ })(),
+
+ _silent = false,
+
+ abs = Math.abs,
+ min = Math.min,
+ slice = [].slice,
+
+ touchDragOverListeners = [],
+
+ _autoScroll = _throttle(function (/**Event*/evt, /**Object*/options, /**HTMLElement*/rootEl) {
+ // Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=505521
+ if (rootEl && options.scroll) {
+ var el,
+ rect,
+ sens = options.scrollSensitivity,
+ speed = options.scrollSpeed,
+
+ x = evt.clientX,
+ y = evt.clientY,
+
+ winWidth = window.innerWidth,
+ winHeight = window.innerHeight,
+
+ vx,
+ vy
+ ;
+
+ // Delect scrollEl
+ if (scrollParentEl !== rootEl) {
+ scrollEl = options.scroll;
+ scrollParentEl = rootEl;
+
+ if (scrollEl === true) {
+ scrollEl = rootEl;
+
+ do {
+ if ((scrollEl.offsetWidth < scrollEl.scrollWidth) ||
+ (scrollEl.offsetHeight < scrollEl.scrollHeight)
+ ) {
+ break;
+ }
+ /* jshint boss:true */
+ } while (scrollEl = scrollEl.parentNode);
+ }
+ }
+
+ if (scrollEl) {
+ el = scrollEl;
+ rect = scrollEl.getBoundingClientRect();
+ vx = (abs(rect.right - x) <= sens) - (abs(rect.left - x) <= sens);
+ vy = (abs(rect.bottom - y) <= sens) - (abs(rect.top - y) <= sens);
+ }
+
+
+ if (!(vx || vy)) {
+ vx = (winWidth - x <= sens) - (x <= sens);
+ vy = (winHeight - y <= sens) - (y <= sens);
+
+ /* jshint expr:true */
+ (vx || vy) && (el = win);
+ }
+
+
+ if (autoScroll.vx !== vx || autoScroll.vy !== vy || autoScroll.el !== el) {
+ autoScroll.el = el;
+ autoScroll.vx = vx;
+ autoScroll.vy = vy;
+
+ clearInterval(autoScroll.pid);
+
+ if (el) {
+ autoScroll.pid = setInterval(function () {
+ if (el === win) {
+ win.scrollTo(win.pageXOffset + vx * speed, win.pageYOffset + vy * speed);
+ } else {
+ vy && (el.scrollTop += vy * speed);
+ vx && (el.scrollLeft += vx * speed);
+ }
+ }, 24);
+ }
+ }
+ }
+ }, 30),
+
+ _prepareGroup = function (options) {
+ var group = options.group;
+
+ if (!group || typeof group != 'object') {
+ group = options.group = {name: group};
+ }
+
+ ['pull', 'put'].forEach(function (key) {
+ if (!(key in group)) {
+ group[key] = true;
+ }
+ });
+
+ options.groups = ' ' + group.name + (group.put.join ? ' ' + group.put.join(' ') : '') + ' ';
+ }
+ ;
+
+
+
+ /**
+ * @class Sortable
+ * @param {HTMLElement} el
+ * @param {Object} [options]
+ */
+ function Sortable(el, options) {
+ if (!(el && el.nodeType && el.nodeType === 1)) {
+ throw 'Sortable: `el` must be HTMLElement, and not ' + {}.toString.call(el);
+ }
+
+ this.el = el; // root element
+ this.options = options = _extend({}, options);
+
+
+ // Export instance
+ el[expando] = this;
+
+
+ // Default options
+ var defaults = {
+ group: Math.random(),
+ sort: true,
+ disabled: false,
+ store: null,
+ handle: null,
+ scroll: true,
+ scrollSensitivity: 30,
+ scrollSpeed: 10,
+ draggable: /[uo]l/i.test(el.nodeName) ? 'li' : '>*',
+ ghostClass: 'sortable-ghost',
+ chosenClass: 'sortable-chosen',
+ ignore: 'a, img',
+ filter: null,
+ animation: 0,
+ setData: function (dataTransfer, dragEl) {
+ dataTransfer.setData('Text', dragEl.textContent);
+ },
+ dropBubble: false,
+ dragoverBubble: false,
+ dataIdAttr: 'data-id',
+ delay: 0,
+ forceFallback: false,
+ fallbackClass: 'sortable-fallback',
+ fallbackOnBody: false,
+ fallbackTolerance: 0
+ };
+
+
+ // Set default options
+ for (var name in defaults) {
+ !(name in options) && (options[name] = defaults[name]);
+ }
+
+ _prepareGroup(options);
+
+ // Bind all private methods
+ for (var fn in this) {
+ if (fn.charAt(0) === '_') {
+ this[fn] = this[fn].bind(this);
+ }
+ }
+
+ // Setup drag mode
+ this.nativeDraggable = options.forceFallback ? false : supportDraggable;
+
+ // Bind events
+ _on(el, 'mousedown', this._onTapStart);
+ _on(el, 'touchstart', this._onTapStart);
+
+ if (this.nativeDraggable) {
+ _on(el, 'dragover', this);
+ _on(el, 'dragenter', this);
+ }
+
+ touchDragOverListeners.push(this._onDragOver);
+
+ // Restore sorting
+ options.store && this.sort(options.store.get(this));
+ }
+
+
+ Sortable.prototype = /** @lends Sortable.prototype */ {
+ constructor: Sortable,
+
+ _onTapStart: function (/** Event|TouchEvent */evt) {
+ var _this = this,
+ el = this.el,
+ options = this.options,
+ type = evt.type,
+ touch = evt.touches && evt.touches[0],
+ target = (touch || evt).target,
+ originalTarget = target,
+ filter = options.filter,
+ startIndex;
+
+ // Don't trigger start event when an element is been dragged, otherwise the evt.oldindex always wrong when set option.group.
+ if (dragEl) {
+ return;
+ }
+
+ if (type === 'mousedown' && evt.button !== 0 || options.disabled) {
+ return; // only left button or enabled
+ }
+
+ target = _closest(target, options.draggable, el);
+
+ if (!target) {
+ return;
+ }
+
+ if (options.handle && !_closest(originalTarget, options.handle, el)) {
+ return;
+ }
+
+ // Get the index of the dragged element within its parent
+ startIndex = _index(target, options.draggable);
+
+ // Check filter
+ if (typeof filter === 'function') {
+ if (filter.call(this, evt, target, this)) {
+ _dispatchEvent(_this, originalTarget, 'filter', target, el, startIndex);
+ evt.preventDefault();
+ return; // cancel dnd
+ }
+ }
+ else if (filter) {
+ filter = filter.split(',').some(function (criteria) {
+ criteria = _closest(originalTarget, criteria.trim(), el);
+
+ if (criteria) {
+ _dispatchEvent(_this, criteria, 'filter', target, el, startIndex);
+ return true;
+ }
+ });
+
+ if (filter) {
+ evt.preventDefault();
+ return; // cancel dnd
+ }
+ }
+
+ // Prepare `dragstart`
+ this._prepareDragStart(evt, touch, target, startIndex);
+ },
+
+ _prepareDragStart: function (/** Event */evt, /** Touch */touch, /** HTMLElement */target, /** Number */startIndex) {
+ var _this = this,
+ el = _this.el,
+ options = _this.options,
+ ownerDocument = el.ownerDocument,
+ dragStartFn;
+
+ if (target && !dragEl && (target.parentNode === el)) {
+ tapEvt = evt;
+
+ rootEl = el;
+ dragEl = target;
+ parentEl = dragEl.parentNode;
+ nextEl = dragEl.nextSibling;
+ activeGroup = options.group;
+ oldIndex = startIndex;
+
+ this._lastX = (touch || evt).clientX;
+ this._lastY = (touch || evt).clientY;
+
+ dragStartFn = function () {
+ // Delayed drag has been triggered
+ // we can re-enable the events: touchmove/mousemove
+ _this._disableDelayedDrag();
+
+ // Make the element draggable
+ dragEl.draggable = true;
+
+ // Chosen item
+ _toggleClass(dragEl, _this.options.chosenClass, true);
+
+ // Bind the events: dragstart/dragend
+ _this._triggerDragStart(touch);
+
+ // Drag start event
+ _dispatchEvent(_this, rootEl, 'choose', dragEl, rootEl, oldIndex);
+ };
+
+ // Disable "draggable"
+ options.ignore.split(',').forEach(function (criteria) {
+ _find(dragEl, criteria.trim(), _disableDraggable);
+ });
+
+ _on(ownerDocument, 'mouseup', _this._onDrop);
+ _on(ownerDocument, 'touchend', _this._onDrop);
+ _on(ownerDocument, 'touchcancel', _this._onDrop);
+
+ if (options.delay) {
+ // If the user moves the pointer or let go the click or touch
+ // before the delay has been reached:
+ // disable the delayed drag
+ _on(ownerDocument, 'mouseup', _this._disableDelayedDrag);
+ _on(ownerDocument, 'touchend', _this._disableDelayedDrag);
+ _on(ownerDocument, 'touchcancel', _this._disableDelayedDrag);
+ _on(ownerDocument, 'mousemove', _this._disableDelayedDrag);
+ _on(ownerDocument, 'touchmove', _this._disableDelayedDrag);
+
+ _this._dragStartTimer = setTimeout(dragStartFn, options.delay);
+ } else {
+ dragStartFn();
+ }
+ }
+ },
+
+ _disableDelayedDrag: function () {
+ var ownerDocument = this.el.ownerDocument;
+
+ clearTimeout(this._dragStartTimer);
+ _off(ownerDocument, 'mouseup', this._disableDelayedDrag);
+ _off(ownerDocument, 'touchend', this._disableDelayedDrag);
+ _off(ownerDocument, 'touchcancel', this._disableDelayedDrag);
+ _off(ownerDocument, 'mousemove', this._disableDelayedDrag);
+ _off(ownerDocument, 'touchmove', this._disableDelayedDrag);
+ },
+
+ _triggerDragStart: function (/** Touch */touch) {
+ if (touch) {
+ // Touch device support
+ tapEvt = {
+ target: dragEl,
+ clientX: touch.clientX,
+ clientY: touch.clientY
+ };
+
+ this._onDragStart(tapEvt, 'touch');
+ }
+ else if (!this.nativeDraggable) {
+ this._onDragStart(tapEvt, true);
+ }
+ else {
+ _on(dragEl, 'dragend', this);
+ _on(rootEl, 'dragstart', this._onDragStart);
+ }
+
+ try {
+ if (document.selection) {
+ document.selection.empty();
+ } else {
+ window.getSelection().removeAllRanges();
+ }
+ } catch (err) {
+ }
+ },
+
+ _dragStarted: function () {
+ if (rootEl && dragEl) {
+ // Apply effect
+ _toggleClass(dragEl, this.options.ghostClass, true);
+
+ Sortable.active = this;
+
+ // Drag start event
+ _dispatchEvent(this, rootEl, 'start', dragEl, rootEl, oldIndex);
+ }
+ },
+
+ _emulateDragOver: function () {
+ if (touchEvt) {
+ if (this._lastX === touchEvt.clientX && this._lastY === touchEvt.clientY) {
+ return;
+ }
+
+ this._lastX = touchEvt.clientX;
+ this._lastY = touchEvt.clientY;
+
+ if (!supportCssPointerEvents) {
+ _css(ghostEl, 'display', 'none');
+ }
+
+ var target = document.elementFromPoint(touchEvt.clientX, touchEvt.clientY),
+ parent = target,
+ groupName = ' ' + this.options.group.name + '',
+ i = touchDragOverListeners.length;
+
+ if (parent) {
+ do {
+ if (parent[expando] && parent[expando].options.groups.indexOf(groupName) > -1) {
+ while (i--) {
+ touchDragOverListeners[i]({
+ clientX: touchEvt.clientX,
+ clientY: touchEvt.clientY,
+ target: target,
+ rootEl: parent
+ });
+ }
+
+ break;
+ }
+
+ target = parent; // store last element
+ }
+ /* jshint boss:true */
+ while (parent = parent.parentNode);
+ }
+
+ if (!supportCssPointerEvents) {
+ _css(ghostEl, 'display', '');
+ }
+ }
+ },
+
+
+ _onTouchMove: function (/**TouchEvent*/evt) {
+ if (tapEvt) {
+ var options = this.options,
+ fallbackTolerance = options.fallbackTolerance,
+ touch = evt.touches ? evt.touches[0] : evt,
+ dx = touch.clientX - tapEvt.clientX,
+ dy = touch.clientY - tapEvt.clientY,
+ translate3d = evt.touches ? 'translate3d(' + dx + 'px,' + dy + 'px,0)' : 'translate(' + dx + 'px,' + dy + 'px)';
+
+ // only set the status to dragging, when we are actually dragging
+ if (!Sortable.active) {
+ if (fallbackTolerance &&
+ min(abs(touch.clientX - this._lastX), abs(touch.clientY - this._lastY)) < fallbackTolerance
+ ) {
+ return;
+ }
+
+ this._dragStarted();
+ }
+
+ // as well as creating the ghost element on the document body
+ this._appendGhost();
+
+ moved = true;
+ touchEvt = touch;
+
+ _css(ghostEl, 'webkitTransform', translate3d);
+ _css(ghostEl, 'mozTransform', translate3d);
+ _css(ghostEl, 'msTransform', translate3d);
+ _css(ghostEl, 'transform', translate3d);
+
+ evt.preventDefault();
+ }
+ },
+
+ _appendGhost: function () {
+ if (!ghostEl) {
+ var rect = dragEl.getBoundingClientRect(),
+ css = _css(dragEl),
+ options = this.options,
+ ghostRect;
+
+ ghostEl = dragEl.cloneNode(true);
+
+ _toggleClass(ghostEl, options.ghostClass, false);
+ _toggleClass(ghostEl, options.fallbackClass, true);
+
+ _css(ghostEl, 'top', rect.top - parseInt(css.marginTop, 10));
+ _css(ghostEl, 'left', rect.left - parseInt(css.marginLeft, 10));
+ _css(ghostEl, 'width', rect.width);
+ _css(ghostEl, 'height', rect.height);
+ _css(ghostEl, 'opacity', '0.8');
+ _css(ghostEl, 'position', 'fixed');
+ _css(ghostEl, 'zIndex', '100000');
+ _css(ghostEl, 'pointerEvents', 'none');
+
+ options.fallbackOnBody && document.body.appendChild(ghostEl) || rootEl.appendChild(ghostEl);
+
+ // Fixing dimensions.
+ ghostRect = ghostEl.getBoundingClientRect();
+ _css(ghostEl, 'width', rect.width * 2 - ghostRect.width);
+ _css(ghostEl, 'height', rect.height * 2 - ghostRect.height);
+ }
+ },
+
+ _onDragStart: function (/**Event*/evt, /**boolean*/useFallback) {
+ var dataTransfer = evt.dataTransfer,
+ options = this.options;
+
+ this._offUpEvents();
+
+ if (activeGroup.pull == 'clone') {
+ cloneEl = dragEl.cloneNode(true);
+ _css(cloneEl, 'display', 'none');
+ rootEl.insertBefore(cloneEl, dragEl);
+ _dispatchEvent(this, rootEl, 'clone', dragEl);
+ }
+
+ if (useFallback) {
+ if (useFallback === 'touch') {
+ // Bind touch events
+ _on(document, 'touchmove', this._onTouchMove);
+ _on(document, 'touchend', this._onDrop);
+ _on(document, 'touchcancel', this._onDrop);
+ } else {
+ // Old brwoser
+ _on(document, 'mousemove', this._onTouchMove);
+ _on(document, 'mouseup', this._onDrop);
+ }
+
+ this._loopId = setInterval(this._emulateDragOver, 50);
+ }
+ else {
+ if (dataTransfer) {
+ dataTransfer.effectAllowed = 'move';
+ options.setData && options.setData.call(this, dataTransfer, dragEl);
+ }
+
+ _on(document, 'drop', this);
+ setTimeout(this._dragStarted, 0);
+ }
+ },
+
+ _onDragOver: function (/**Event*/evt) {
+ var el = this.el,
+ target,
+ dragRect,
+ revert,
+ options = this.options,
+ group = options.group,
+ groupPut = group.put,
+ isOwner = (activeGroup === group),
+ canSort = options.sort;
+
+ if (evt.preventDefault !== void 0) {
+ evt.preventDefault();
+ !options.dragoverBubble && evt.stopPropagation();
+ }
+
+ moved = true;
+
+ if (activeGroup && !options.disabled &&
+ (isOwner
+ ? canSort || (revert = !rootEl.contains(dragEl)) // Reverting item into the original list
+ : activeGroup.pull && groupPut && (
+ (activeGroup.name === group.name) || // by Name
+ (groupPut.indexOf && ~groupPut.indexOf(activeGroup.name)) // by Array
+ )
+ ) &&
+ (evt.rootEl === void 0 || evt.rootEl === this.el) // touch fallback
+ ) {
+ // Smart auto-scrolling
+ _autoScroll(evt, options, this.el);
+
+ if (_silent) {
+ return;
+ }
+
+ target = _closest(evt.target, options.draggable, el);
+ dragRect = dragEl.getBoundingClientRect();
+
+ if (revert) {
+ _cloneHide(true);
+ parentEl = rootEl; // actualization
+
+ if (cloneEl || nextEl) {
+ rootEl.insertBefore(dragEl, cloneEl || nextEl);
+ }
+ else if (!canSort) {
+ rootEl.appendChild(dragEl);
+ }
+
+ return;
+ }
+
+
+ if ((el.children.length === 0) || (el.children[0] === ghostEl) ||
+ (el === evt.target) && (target = _ghostIsLast(el, evt))
+ ) {
+
+ if (target) {
+ if (target.animated) {
+ return;
+ }
+
+ targetRect = target.getBoundingClientRect();
+ }
+
+ _cloneHide(isOwner);
+
+ if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect) !== false) {
+ if (!dragEl.contains(el)) {
+ el.appendChild(dragEl);
+ parentEl = el; // actualization
+ }
+
+ this._animate(dragRect, dragEl);
+ target && this._animate(targetRect, target);
+ }
+ }
+ else if (target && !target.animated && target !== dragEl && (target.parentNode[expando] !== void 0)) {
+ if (lastEl !== target) {
+ lastEl = target;
+ lastCSS = _css(target);
+ lastParentCSS = _css(target.parentNode);
+ }
+
+
+ var targetRect = target.getBoundingClientRect(),
+ width = targetRect.right - targetRect.left,
+ height = targetRect.bottom - targetRect.top,
+ floating = /left|right|inline/.test(lastCSS.cssFloat + lastCSS.display)
+ || (lastParentCSS.display == 'flex' && lastParentCSS['flex-direction'].indexOf('row') === 0),
+ isWide = (target.offsetWidth > dragEl.offsetWidth),
+ isLong = (target.offsetHeight > dragEl.offsetHeight),
+ halfway = (floating ? (evt.clientX - targetRect.left) / width : (evt.clientY - targetRect.top) / height) > 0.5,
+ nextSibling = target.nextElementSibling,
+ moveVector = _onMove(rootEl, el, dragEl, dragRect, target, targetRect),
+ after
+ ;
+
+ if (moveVector !== false) {
+ _silent = true;
+ setTimeout(_unsilent, 30);
+
+ _cloneHide(isOwner);
+
+ if (moveVector === 1 || moveVector === -1) {
+ after = (moveVector === 1);
+ }
+ else if (floating) {
+ var elTop = dragEl.offsetTop,
+ tgTop = target.offsetTop;
+
+ if (elTop === tgTop) {
+ after = (target.previousElementSibling === dragEl) && !isWide || halfway && isWide;
+ }
+ else if (target.previousElementSibling === dragEl || dragEl.previousElementSibling === target) {
+ after = (evt.clientY - targetRect.top) / height > 0.5;
+ } else {
+ after = tgTop > elTop;
+ }
+ } else {
+ after = (nextSibling !== dragEl) && !isLong || halfway && isLong;
+ }
+
+ if (!dragEl.contains(el)) {
+ if (after && !nextSibling) {
+ el.appendChild(dragEl);
+ } else {
+ target.parentNode.insertBefore(dragEl, after ? nextSibling : target);
+ }
+ }
+
+ parentEl = dragEl.parentNode; // actualization
+
+ this._animate(dragRect, dragEl);
+ this._animate(targetRect, target);
+ }
+ }
+ }
+ },
+
+ _animate: function (prevRect, target) {
+ var ms = this.options.animation;
+
+ if (ms) {
+ var currentRect = target.getBoundingClientRect();
+
+ _css(target, 'transition', 'none');
+ _css(target, 'transform', 'translate3d('
+ + (prevRect.left - currentRect.left) + 'px,'
+ + (prevRect.top - currentRect.top) + 'px,0)'
+ );
+
+ target.offsetWidth; // repaint
+
+ _css(target, 'transition', 'all ' + ms + 'ms');
+ _css(target, 'transform', 'translate3d(0,0,0)');
+
+ clearTimeout(target.animated);
+ target.animated = setTimeout(function () {
+ _css(target, 'transition', '');
+ _css(target, 'transform', '');
+ target.animated = false;
+ }, ms);
+ }
+ },
+
+ _offUpEvents: function () {
+ var ownerDocument = this.el.ownerDocument;
+
+ _off(document, 'touchmove', this._onTouchMove);
+ _off(ownerDocument, 'mouseup', this._onDrop);
+ _off(ownerDocument, 'touchend', this._onDrop);
+ _off(ownerDocument, 'touchcancel', this._onDrop);
+ },
+
+ _onDrop: function (/**Event*/evt) {
+ var el = this.el,
+ options = this.options;
+
+ clearInterval(this._loopId);
+ clearInterval(autoScroll.pid);
+ clearTimeout(this._dragStartTimer);
+
+ // Unbind events
+ _off(document, 'mousemove', this._onTouchMove);
+
+ if (this.nativeDraggable) {
+ _off(document, 'drop', this);
+ _off(el, 'dragstart', this._onDragStart);
+ }
+
+ this._offUpEvents();
+
+ if (evt) {
+ if (moved) {
+ evt.preventDefault();
+ !options.dropBubble && evt.stopPropagation();
+ }
+
+ ghostEl && ghostEl.parentNode.removeChild(ghostEl);
+
+ if (dragEl) {
+ if (this.nativeDraggable) {
+ _off(dragEl, 'dragend', this);
+ }
+
+ _disableDraggable(dragEl);
+
+ // Remove class's
+ _toggleClass(dragEl, this.options.ghostClass, false);
+ _toggleClass(dragEl, this.options.chosenClass, false);
+
+ if (rootEl !== parentEl) {
+ newIndex = _index(dragEl, options.draggable);
+
+ if (newIndex >= 0) {
+ // drag from one list and drop into another
+ _dispatchEvent(null, parentEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
+ _dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
+
+ // Add event
+ _dispatchEvent(null, parentEl, 'add', dragEl, rootEl, oldIndex, newIndex);
+
+ // Remove event
+ _dispatchEvent(this, rootEl, 'remove', dragEl, rootEl, oldIndex, newIndex);
+ }
+ }
+ else {
+ // Remove clone
+ cloneEl && cloneEl.parentNode.removeChild(cloneEl);
+
+ if (dragEl.nextSibling !== nextEl) {
+ // Get the index of the dragged element within its parent
+ newIndex = _index(dragEl, options.draggable);
+
+ if (newIndex >= 0) {
+ // drag & drop within the same list
+ _dispatchEvent(this, rootEl, 'update', dragEl, rootEl, oldIndex, newIndex);
+ _dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
+ }
+ }
+ }
+
+ if (Sortable.active) {
+ if (newIndex === null || newIndex === -1) {
+ newIndex = oldIndex;
+ }
+
+ _dispatchEvent(this, rootEl, 'end', dragEl, rootEl, oldIndex, newIndex);
+
+ // Save sorting
+ this.save();
+ }
+ }
+
+ }
+
+ this._nulling();
+ },
+
+ _nulling: function () {
+ rootEl =
+ dragEl =
+ parentEl =
+ ghostEl =
+ nextEl =
+ cloneEl =
+
+ scrollEl =
+ scrollParentEl =
+
+ tapEvt =
+ touchEvt =
+
+ moved =
+ newIndex =
+
+ lastEl =
+ lastCSS =
+
+ activeGroup =
+ Sortable.active = null;
+ },
+
+ handleEvent: function (/**Event*/evt) {
+ var type = evt.type;
+
+ if (type === 'dragover' || type === 'dragenter') {
+ if (dragEl) {
+ this._onDragOver(evt);
+ _globalDragOver(evt);
+ }
+ }
+ else if (type === 'drop' || type === 'dragend') {
+ this._onDrop(evt);
+ }
+ },
+
+
+ /**
+ * Serializes the item into an array of string.
+ * @returns {String[]}
+ */
+ toArray: function () {
+ var order = [],
+ el,
+ children = this.el.children,
+ i = 0,
+ n = children.length,
+ options = this.options;
+
+ for (; i < n; i++) {
+ el = children[i];
+ if (_closest(el, options.draggable, this.el)) {
+ order.push(el.getAttribute(options.dataIdAttr) || _generateId(el));
+ }
+ }
+
+ return order;
+ },
+
+
+ /**
+ * Sorts the elements according to the array.
+ * @param {String[]} order order of the items
+ */
+ sort: function (order) {
+ var items = {}, rootEl = this.el;
+
+ this.toArray().forEach(function (id, i) {
+ var el = rootEl.children[i];
+
+ if (_closest(el, this.options.draggable, rootEl)) {
+ items[id] = el;
+ }
+ }, this);
+
+ order.forEach(function (id) {
+ if (items[id]) {
+ rootEl.removeChild(items[id]);
+ rootEl.appendChild(items[id]);
+ }
+ });
+ },
+
+
+ /**
+ * Save the current sorting
+ */
+ save: function () {
+ var store = this.options.store;
+ store && store.set(this);
+ },
+
+
+ /**
+ * 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.
+ * @param {HTMLElement} el
+ * @param {String} [selector] default: `options.draggable`
+ * @returns {HTMLElement|null}
+ */
+ closest: function (el, selector) {
+ return _closest(el, selector || this.options.draggable, this.el);
+ },
+
+
+ /**
+ * Set/get option
+ * @param {string} name
+ * @param {*} [value]
+ * @returns {*}
+ */
+ option: function (name, value) {
+ var options = this.options;
+
+ if (value === void 0) {
+ return options[name];
+ } else {
+ options[name] = value;
+
+ if (name === 'group') {
+ _prepareGroup(options);
+ }
+ }
+ },
+
+
+ /**
+ * Destroy
+ */
+ destroy: function () {
+ var el = this.el;
+
+ el[expando] = null;
+
+ _off(el, 'mousedown', this._onTapStart);
+ _off(el, 'touchstart', this._onTapStart);
+
+ if (this.nativeDraggable) {
+ _off(el, 'dragover', this);
+ _off(el, 'dragenter', this);
+ }
+
+ // Remove draggable attributes
+ Array.prototype.forEach.call(el.querySelectorAll('[draggable]'), function (el) {
+ el.removeAttribute('draggable');
+ });
+
+ touchDragOverListeners.splice(touchDragOverListeners.indexOf(this._onDragOver), 1);
+
+ this._onDrop();
+
+ this.el = el = null;
+ }
+ };
+
+
+ function _cloneHide(state) {
+ if (cloneEl && (cloneEl.state !== state)) {
+ _css(cloneEl, 'display', state ? 'none' : '');
+ !state && cloneEl.state && rootEl.insertBefore(cloneEl, dragEl);
+ cloneEl.state = state;
+ }
+ }
+
+
+ function _closest(/**HTMLElement*/el, /**String*/selector, /**HTMLElement*/ctx) {
+ if (el) {
+ ctx = ctx || document;
+
+ do {
+ if ((selector === '>*' && el.parentNode === ctx) || _matches(el, selector)) {
+ return el;
+ }
+ }
+ while (el !== ctx && (el = el.parentNode));
+ }
+
+ return null;
+ }
+
+
+ function _globalDragOver(/**Event*/evt) {
+ if (evt.dataTransfer) {
+ evt.dataTransfer.dropEffect = 'move';
+ }
+ evt.preventDefault();
+ }
+
+
+ function _on(el, event, fn) {
+ el.addEventListener(event, fn, false);
+ }
+
+
+ function _off(el, event, fn) {
+ el.removeEventListener(event, fn, false);
+ }
+
+
+ function _toggleClass(el, name, state) {
+ if (el) {
+ if (el.classList) {
+ el.classList[state ? 'add' : 'remove'](name);
+ }
+ else {
+ var className = (' ' + el.className + ' ').replace(RSPACE, ' ').replace(' ' + name + ' ', ' ');
+ el.className = (className + (state ? ' ' + name : '')).replace(RSPACE, ' ');
+ }
+ }
+ }
+
+
+ function _css(el, prop, val) {
+ var style = el && el.style;
+
+ if (style) {
+ if (val === void 0) {
+ if (document.defaultView && document.defaultView.getComputedStyle) {
+ val = document.defaultView.getComputedStyle(el, '');
+ }
+ else if (el.currentStyle) {
+ val = el.currentStyle;
+ }
+
+ return prop === void 0 ? val : val[prop];
+ }
+ else {
+ if (!(prop in style)) {
+ prop = '-webkit-' + prop;
+ }
+
+ style[prop] = val + (typeof val === 'string' ? '' : 'px');
+ }
+ }
+ }
+
+
+ function _find(ctx, tagName, iterator) {
+ if (ctx) {
+ var list = ctx.getElementsByTagName(tagName), i = 0, n = list.length;
+
+ if (iterator) {
+ for (; i < n; i++) {
+ iterator(list[i], i);
+ }
+ }
+
+ return list;
+ }
+
+ return [];
+ }
+
+
+
+ function _dispatchEvent(sortable, rootEl, name, targetEl, fromEl, startIndex, newIndex) {
+ var evt = document.createEvent('Event'),
+ options = (sortable || rootEl[expando]).options,
+ onName = 'on' + name.charAt(0).toUpperCase() + name.substr(1);
+
+ evt.initEvent(name, true, true);
+
+ evt.to = rootEl;
+ evt.from = fromEl || rootEl;
+ evt.item = targetEl || rootEl;
+ evt.clone = cloneEl;
+
+ evt.oldIndex = startIndex;
+ evt.newIndex = newIndex;
+
+ rootEl.dispatchEvent(evt);
+
+ if (options[onName]) {
+ options[onName].call(sortable, evt);
+ }
+ }
+
+
+ function _onMove(fromEl, toEl, dragEl, dragRect, targetEl, targetRect) {
+ var evt,
+ sortable = fromEl[expando],
+ onMoveFn = sortable.options.onMove,
+ retVal;
+
+ evt = document.createEvent('Event');
+ evt.initEvent('move', true, true);
+
+ evt.to = toEl;
+ evt.from = fromEl;
+ evt.dragged = dragEl;
+ evt.draggedRect = dragRect;
+ evt.related = targetEl || toEl;
+ evt.relatedRect = targetRect || toEl.getBoundingClientRect();
+
+ fromEl.dispatchEvent(evt);
+
+ if (onMoveFn) {
+ retVal = onMoveFn.call(sortable, evt);
+ }
+
+ return retVal;
+ }
+
+
+ function _disableDraggable(el) {
+ el.draggable = false;
+ }
+
+
+ function _unsilent() {
+ _silent = false;
+ }
+
+
+ /** @returns {HTMLElement|false} */
+ function _ghostIsLast(el, evt) {
+ var lastEl = el.lastElementChild,
+ rect = lastEl.getBoundingClientRect();
+
+ return ((evt.clientY - (rect.top + rect.height) > 5) || (evt.clientX - (rect.right + rect.width) > 5)) && lastEl; // min delta
+ }
+
+
+ /**
+ * Generate id
+ * @param {HTMLElement} el
+ * @returns {String}
+ * @private
+ */
+ function _generateId(el) {
+ var str = el.tagName + el.className + el.src + el.href + el.textContent,
+ i = str.length,
+ sum = 0;
+
+ while (i--) {
+ sum += str.charCodeAt(i);
+ }
+
+ return sum.toString(36);
+ }
+
+ /**
+ * Returns the index of an element within its parent for a selected set of
+ * elements
+ * @param {HTMLElement} el
+ * @param {selector} selector
+ * @return {number}
+ */
+ function _index(el, selector) {
+ var index = 0;
+
+ if (!el || !el.parentNode) {
+ return -1;
+ }
+
+ while (el && (el = el.previousElementSibling)) {
+ if ((el.nodeName.toUpperCase() !== 'TEMPLATE') && (selector === '>*' || _matches(el, selector))) {
+ index++;
+ }
+ }
+
+ return index;
+ }
+
+ function _matches(/**HTMLElement*/el, /**String*/selector) {
+ if (el) {
+ selector = selector.split('.');
+
+ var tag = selector.shift().toUpperCase(),
+ re = new RegExp('\\s(' + selector.join('|') + ')(?=\\s)', 'g');
+
+ return (
+ (tag === '' || el.nodeName.toUpperCase() == tag) &&
+ (!selector.length || ((' ' + el.className + ' ').match(re) || []).length == selector.length)
+ );
+ }
+
+ return false;
+ }
+
+ function _throttle(callback, ms) {
+ var args, _this;
+
+ return function () {
+ if (args === void 0) {
+ args = arguments;
+ _this = this;
+
+ setTimeout(function () {
+ if (args.length === 1) {
+ callback.call(_this, args[0]);
+ } else {
+ callback.apply(_this, args);
+ }
+
+ args = void 0;
+ }, ms);
+ }
+ };
+ }
+
+ function _extend(dst, src) {
+ if (dst && src) {
+ for (var key in src) {
+ if (src.hasOwnProperty(key)) {
+ dst[key] = src[key];
+ }
+ }
+ }
+
+ return dst;
+ }
+
+
+ // Export utils
+ Sortable.utils = {
+ on: _on,
+ off: _off,
+ css: _css,
+ find: _find,
+ is: function (el, selector) {
+ return !!_closest(el, selector, el);
+ },
+ extend: _extend,
+ throttle: _throttle,
+ closest: _closest,
+ toggleClass: _toggleClass,
+ index: _index
+ };
+
+
+ /**
+ * Create sortable instance
+ * @param {HTMLElement} el
+ * @param {Object} [options]
+ */
+ Sortable.create = function (el, options) {
+ return new Sortable(el, options);
+ };
+
+
+ // Export
+ Sortable.version = '1.4.2';
+ return Sortable;
+});
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