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Sortable.js
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/**!
* Sortable 1.15.2
* @author RubaXa <[email protected]>
* @author owenm <[email protected]>
* @license MIT
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = global || self, global.Sortable = factory());
}(this, (function () { 'use strict';
function _extends() {
_extends = Object.assign || function (target) {
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i];
for (var key in source) {
if (Object.prototype.hasOwnProperty.call(source, key)) {
target[key] = source[key];
}
}
}
return target;
};
return _extends.apply(this, arguments);
}
var version = "1.15.2";
function userAgent(pattern) {
if (typeof window !== 'undefined' && window.navigator) {
return !! /*@__PURE__*/navigator.userAgent.match(pattern);
}
}
const IE11OrLess = userAgent(/(?:Trident.*rv[ :]?11\.|msie|iemobile|Windows Phone)/i);
const Edge = userAgent(/Edge/i);
const FireFox = userAgent(/firefox/i);
const Safari = userAgent(/safari/i) && !userAgent(/chrome/i) && !userAgent(/android/i);
const IOS = userAgent(/iP(ad|od|hone)/i);
const ChromeForAndroid = userAgent(/chrome/i) && userAgent(/android/i);
const captureMode = {
capture: false,
passive: false
};
function on(el, event, fn) {
el.addEventListener(event, fn, !IE11OrLess && captureMode);
}
function off(el, event, fn) {
el.removeEventListener(event, fn, !IE11OrLess && captureMode);
}
function matches( /**HTMLElement*/el, /**String*/selector) {
if (!selector) return;
selector[0] === '>' && (selector = selector.substring(1));
if (el) {
try {
if (el.matches) {
return el.matches(selector);
} else if (el.msMatchesSelector) {
return el.msMatchesSelector(selector);
} else if (el.webkitMatchesSelector) {
return el.webkitMatchesSelector(selector);
}
} catch (_) {
return false;
}
}
return false;
}
function getParentOrHost(el) {
return el.host && el !== document && el.host.nodeType ? el.host : el.parentNode;
}
function closest( /**HTMLElement*/el, /**String*/selector, /**HTMLElement*/ctx, includeCTX) {
if (el) {
ctx = ctx || document;
do {
if (selector != null && (selector[0] === '>' ? el.parentNode === ctx && matches(el, selector) : matches(el, selector)) || includeCTX && el === ctx) {
return el;
}
if (el === ctx) break;
/* jshint boss:true */
} while (el = getParentOrHost(el));
}
return null;
}
const R_SPACE = /\s+/g;
function toggleClass(el, name, state) {
if (el && name) {
if (el.classList) {
el.classList[state ? 'add' : 'remove'](name);
} else {
let className = (' ' + el.className + ' ').replace(R_SPACE, ' ').replace(' ' + name + ' ', ' ');
el.className = (className + (state ? ' ' + name : '')).replace(R_SPACE, ' ');
}
}
}
function css(el, prop, val) {
let 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.indexOf('webkit') === -1) {
prop = '-webkit-' + prop;
}
style[prop] = val + (typeof val === 'string' ? '' : 'px');
}
}
}
function matrix(el, selfOnly) {
let appliedTransforms = '';
if (typeof el === 'string') {
appliedTransforms = el;
} else {
do {
let transform = css(el, 'transform');
if (transform && transform !== 'none') {
appliedTransforms = transform + ' ' + appliedTransforms;
}
/* jshint boss:true */
} while (!selfOnly && (el = el.parentNode));
}
const matrixFn = window.DOMMatrix || window.WebKitCSSMatrix || window.CSSMatrix || window.MSCSSMatrix;
/*jshint -W056 */
return matrixFn && new matrixFn(appliedTransforms);
}
function find(ctx, tagName, iterator) {
if (ctx) {
let list = ctx.getElementsByTagName(tagName),
i = 0,
n = list.length;
if (iterator) {
for (; i < n; i++) {
iterator(list[i], i);
}
}
return list;
}
return [];
}
function getWindowScrollingElement() {
let scrollingElement = document.scrollingElement;
if (scrollingElement) {
return scrollingElement;
} else {
return document.documentElement;
}
}
/**
* Returns the "bounding client rect" of given element
* @param {HTMLElement} el The element whose boundingClientRect is wanted
* @param {[Boolean]} relativeToContainingBlock Whether the rect should be relative to the containing block of (including) the container
* @param {[Boolean]} relativeToNonStaticParent Whether the rect should be relative to the relative parent of (including) the contaienr
* @param {[Boolean]} undoScale Whether the container's scale() should be undone
* @param {[HTMLElement]} container The parent the element will be placed in
* @return {Object} The boundingClientRect of el, with specified adjustments
*/
function getRect(el, relativeToContainingBlock, relativeToNonStaticParent, undoScale, container) {
if (!el.getBoundingClientRect && el !== window) return;
let elRect, top, left, bottom, right, height, width;
if (el !== window && el.parentNode && el !== getWindowScrollingElement()) {
elRect = el.getBoundingClientRect();
top = elRect.top;
left = elRect.left;
bottom = elRect.bottom;
right = elRect.right;
height = elRect.height;
width = elRect.width;
} else {
top = 0;
left = 0;
bottom = window.innerHeight;
right = window.innerWidth;
height = window.innerHeight;
width = window.innerWidth;
}
if ((relativeToContainingBlock || relativeToNonStaticParent) && el !== window) {
// Adjust for translate()
container = container || el.parentNode;
// solves #1123 (see: https://stackoverflow.com/a/37953806/6088312)
// Not needed on <= IE11
if (!IE11OrLess) {
do {
if (container && container.getBoundingClientRect && (css(container, 'transform') !== 'none' || relativeToNonStaticParent && css(container, 'position') !== 'static')) {
let containerRect = container.getBoundingClientRect();
// Set relative to edges of padding box of container
top -= containerRect.top + parseInt(css(container, 'border-top-width'));
left -= containerRect.left + parseInt(css(container, 'border-left-width'));
bottom = top + elRect.height;
right = left + elRect.width;
break;
}
/* jshint boss:true */
} while (container = container.parentNode);
}
}
if (undoScale && el !== window) {
// Adjust for scale()
let elMatrix = matrix(container || el),
scaleX = elMatrix && elMatrix.a,
scaleY = elMatrix && elMatrix.d;
if (elMatrix) {
top /= scaleY;
left /= scaleX;
width /= scaleX;
height /= scaleY;
bottom = top + height;
right = left + width;
}
}
return {
top: top,
left: left,
bottom: bottom,
right: right,
width: width,
height: height
};
}
/**
* Checks if a side of an element is scrolled past a side of its parents
* @param {HTMLElement} el The element who's side being scrolled out of view is in question
* @param {String} elSide Side of the element in question ('top', 'left', 'right', 'bottom')
* @param {String} parentSide Side of the parent in question ('top', 'left', 'right', 'bottom')
* @return {HTMLElement} The parent scroll element that the el's side is scrolled past, or null if there is no such element
*/
function isScrolledPast(el, elSide, parentSide) {
let parent = getParentAutoScrollElement(el, true),
elSideVal = getRect(el)[elSide];
/* jshint boss:true */
while (parent) {
let parentSideVal = getRect(parent)[parentSide],
visible;
if (parentSide === 'top' || parentSide === 'left') {
visible = elSideVal >= parentSideVal;
} else {
visible = elSideVal <= parentSideVal;
}
if (!visible) return parent;
if (parent === getWindowScrollingElement()) break;
parent = getParentAutoScrollElement(parent, false);
}
return false;
}
/**
* Gets nth child of el, ignoring hidden children, sortable's elements (does not ignore clone if it's visible)
* and non-draggable elements
* @param {HTMLElement} el The parent element
* @param {Number} childNum The index of the child
* @param {Object} options Parent Sortable's options
* @return {HTMLElement} The child at index childNum, or null if not found
*/
function getChild(el, childNum, options, includeDragEl) {
let currentChild = 0,
i = 0,
children = el.children;
while (i < children.length) {
if (children[i].style.display !== 'none' && children[i] !== Sortable.ghost && (includeDragEl || children[i] !== Sortable.dragged) && closest(children[i], options.draggable, el, false)) {
if (currentChild === childNum) {
return children[i];
}
currentChild++;
}
i++;
}
return null;
}
/**
* Gets the last child in the el, ignoring ghostEl or invisible elements (clones)
* @param {HTMLElement} el Parent element
* @param {selector} selector Any other elements that should be ignored
* @return {HTMLElement} The last child, ignoring ghostEl
*/
function lastChild(el, selector) {
let last = el.lastElementChild;
while (last && (last === Sortable.ghost || css(last, 'display') === 'none' || selector && !matches(last, selector))) {
last = last.previousElementSibling;
}
return last || null;
}
/**
* 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) {
let index = 0;
if (!el || !el.parentNode) {
return -1;
}
/* jshint boss:true */
while (el = el.previousElementSibling) {
if (el.nodeName.toUpperCase() !== 'TEMPLATE' && el !== Sortable.clone && (!selector || matches(el, selector))) {
index++;
}
}
return index;
}
/**
* Returns the scroll offset of the given element, added with all the scroll offsets of parent elements.
* The value is returned in real pixels.
* @param {HTMLElement} el
* @return {Array} Offsets in the format of [left, top]
*/
function getRelativeScrollOffset(el) {
let offsetLeft = 0,
offsetTop = 0,
winScroller = getWindowScrollingElement();
if (el) {
do {
let elMatrix = matrix(el),
scaleX = elMatrix.a,
scaleY = elMatrix.d;
offsetLeft += el.scrollLeft * scaleX;
offsetTop += el.scrollTop * scaleY;
} while (el !== winScroller && (el = el.parentNode));
}
return [offsetLeft, offsetTop];
}
/**
* Returns the index of the object within the given array
* @param {Array} arr Array that may or may not hold the object
* @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
* @return {Number} The index of the object in the array, or -1
*/
function indexOfObject(arr, obj) {
for (let i in arr) {
if (!arr.hasOwnProperty(i)) continue;
for (let key in obj) {
if (obj.hasOwnProperty(key) && obj[key] === arr[i][key]) return Number(i);
}
}
return -1;
}
function getParentAutoScrollElement(el, includeSelf) {
// skip to window
if (!el || !el.getBoundingClientRect) return getWindowScrollingElement();
let elem = el;
let gotSelf = false;
do {
// we don't need to get elem css if it isn't even overflowing in the first place (performance)
if (elem.clientWidth < elem.scrollWidth || elem.clientHeight < elem.scrollHeight) {
let elemCSS = css(elem);
if (elem.clientWidth < elem.scrollWidth && (elemCSS.overflowX == 'auto' || elemCSS.overflowX == 'scroll') || elem.clientHeight < elem.scrollHeight && (elemCSS.overflowY == 'auto' || elemCSS.overflowY == 'scroll')) {
if (!elem.getBoundingClientRect || elem === document.body) return getWindowScrollingElement();
if (gotSelf || includeSelf) return elem;
gotSelf = true;
}
}
/* jshint boss:true */
} while (elem = elem.parentNode);
return getWindowScrollingElement();
}
function extend(dst, src) {
if (dst && src) {
for (let key in src) {
if (src.hasOwnProperty(key)) {
dst[key] = src[key];
}
}
}
return dst;
}
function isRectEqual(rect1, rect2) {
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);
}
let _throttleTimeout;
function throttle(callback, ms) {
return function () {
if (!_throttleTimeout) {
let args = arguments,
_this = this;
if (args.length === 1) {
callback.call(_this, args[0]);
} else {
callback.apply(_this, args);
}
_throttleTimeout = setTimeout(function () {
_throttleTimeout = void 0;
}, ms);
}
};
}
function cancelThrottle() {
clearTimeout(_throttleTimeout);
_throttleTimeout = void 0;
}
function scrollBy(el, x, y) {
el.scrollLeft += x;
el.scrollTop += y;
}
function clone(el) {
let Polymer = window.Polymer;
let $ = window.jQuery || window.Zepto;
if (Polymer && Polymer.dom) {
return Polymer.dom(el).cloneNode(true);
} else if ($) {
return $(el).clone(true)[0];
} else {
return el.cloneNode(true);
}
}
function setRect(el, rect) {
css(el, 'position', 'absolute');
css(el, 'top', rect.top);
css(el, 'left', rect.left);
css(el, 'width', rect.width);
css(el, 'height', rect.height);
}
function unsetRect(el) {
css(el, 'position', '');
css(el, 'top', '');
css(el, 'left', '');
css(el, 'width', '');
css(el, 'height', '');
}
function getChildContainingRectFromElement(container, options, ghostEl) {
const rect = {};
Array.from(container.children).forEach(child => {
if (!closest(child, options.draggable, container, false) || child.animated || child === ghostEl) return;
const childRect = getRect(child);
rect.left = Math.min(rect.left ?? Infinity, childRect.left);
rect.top = Math.min(rect.top ?? Infinity, childRect.top);
rect.right = Math.max(rect.right ?? -Infinity, childRect.right);
rect.bottom = Math.max(rect.bottom ?? -Infinity, childRect.bottom);
});
rect.width = rect.right - rect.left;
rect.height = rect.bottom - rect.top;
rect.x = rect.left;
rect.y = rect.top;
return rect;
}
const expando = 'Sortable' + new Date().getTime();
function AnimationStateManager() {
let animationStates = [],
animationCallbackId;
return {
captureAnimationState() {
animationStates = [];
if (!this.options.animation) return;
let children = [].slice.call(this.el.children);
children.forEach(child => {
if (css(child, 'display') === 'none' || child === Sortable.ghost) return;
animationStates.push({
target: child,
rect: getRect(child)
});
let fromRect = {
...animationStates[animationStates.length - 1].rect
};
// If animating: compensate for current animation
if (child.thisAnimationDuration) {
let childMatrix = matrix(child, true);
if (childMatrix) {
fromRect.top -= childMatrix.f;
fromRect.left -= childMatrix.e;
}
}
child.fromRect = fromRect;
});
},
addAnimationState(state) {
animationStates.push(state);
},
removeAnimationState(target) {
animationStates.splice(indexOfObject(animationStates, {
target
}), 1);
},
animateAll(callback) {
if (!this.options.animation) {
clearTimeout(animationCallbackId);
if (typeof callback === 'function') callback();
return;
}
let animating = false,
animationTime = 0;
animationStates.forEach(state => {
let time = 0,
target = state.target,
fromRect = target.fromRect,
toRect = getRect(target),
prevFromRect = target.prevFromRect,
prevToRect = target.prevToRect,
animatingRect = state.rect,
targetMatrix = matrix(target, true);
if (targetMatrix) {
// Compensate for current animation
toRect.top -= targetMatrix.f;
toRect.left -= targetMatrix.e;
}
target.toRect = toRect;
if (target.thisAnimationDuration) {
// Could also check if animatingRect is between fromRect and toRect
if (isRectEqual(prevFromRect, toRect) && !isRectEqual(fromRect, toRect) &&
// Make sure animatingRect is on line between toRect & fromRect
(animatingRect.top - toRect.top) / (animatingRect.left - toRect.left) === (fromRect.top - toRect.top) / (fromRect.left - toRect.left)) {
// If returning to same place as started from animation and on same axis
time = calculateRealTime(animatingRect, prevFromRect, prevToRect, this.options);
}
}
// if fromRect != toRect: animate
if (!isRectEqual(toRect, fromRect)) {
target.prevFromRect = fromRect;
target.prevToRect = toRect;
if (!time) {
time = this.options.animation;
}
this.animate(target, animatingRect, toRect, time);
}
if (time) {
animating = true;
animationTime = Math.max(animationTime, time);
clearTimeout(target.animationResetTimer);
target.animationResetTimer = setTimeout(function () {
target.animationTime = 0;
target.prevFromRect = null;
target.fromRect = null;
target.prevToRect = null;
target.thisAnimationDuration = null;
}, time);
target.thisAnimationDuration = time;
}
});
clearTimeout(animationCallbackId);
if (!animating) {
if (typeof callback === 'function') callback();
} else {
animationCallbackId = setTimeout(function () {
if (typeof callback === 'function') callback();
}, animationTime);
}
animationStates = [];
},
animate(target, currentRect, toRect, duration) {
if (duration) {
css(target, 'transition', '');
css(target, 'transform', '');
let elMatrix = matrix(this.el),
scaleX = elMatrix && elMatrix.a,
scaleY = elMatrix && elMatrix.d,
translateX = (currentRect.left - toRect.left) / (scaleX || 1),
translateY = (currentRect.top - toRect.top) / (scaleY || 1);
target.animatingX = !!translateX;
target.animatingY = !!translateY;
css(target, 'transform', 'translate3d(' + translateX + 'px,' + translateY + 'px,0)');
this.forRepaintDummy = repaint(target); // repaint
css(target, 'transition', 'transform ' + duration + 'ms' + (this.options.easing ? ' ' + this.options.easing : ''));
css(target, 'transform', 'translate3d(0,0,0)');
typeof target.animated === 'number' && clearTimeout(target.animated);
target.animated = setTimeout(function () {
css(target, 'transition', '');
css(target, 'transform', '');
target.animated = false;
target.animatingX = false;
target.animatingY = false;
}, duration);
}
}
};
}
function repaint(target) {
return target.offsetWidth;
}
function calculateRealTime(animatingRect, fromRect, toRect, options) {
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;
}
let plugins = [];
const defaults = {
initializeByDefault: true
};
var PluginManager = {
mount(plugin) {
// Set default static properties
for (let option in defaults) {
if (defaults.hasOwnProperty(option) && !(option in plugin)) {
plugin[option] = defaults[option];
}
}
plugins.forEach(p => {
if (p.pluginName === plugin.pluginName) {
throw `Sortable: Cannot mount plugin ${plugin.pluginName} more than once`;
}
});
plugins.push(plugin);
},
pluginEvent(eventName, sortable, evt) {
this.eventCanceled = false;
evt.cancel = () => {
this.eventCanceled = true;
};
const eventNameGlobal = eventName + 'Global';
plugins.forEach(plugin => {
if (!sortable[plugin.pluginName]) return;
// Fire global events if it exists in this sortable
if (sortable[plugin.pluginName][eventNameGlobal]) {
sortable[plugin.pluginName][eventNameGlobal]({
sortable,
...evt
});
}
// Only fire plugin event if plugin is enabled in this sortable,
// and plugin has event defined
if (sortable.options[plugin.pluginName] && sortable[plugin.pluginName][eventName]) {
sortable[plugin.pluginName][eventName]({
sortable,
...evt
});
}
});
},
initializePlugins(sortable, el, defaults, options) {
plugins.forEach(plugin => {
const pluginName = plugin.pluginName;
if (!sortable.options[pluginName] && !plugin.initializeByDefault) return;
let initialized = new plugin(sortable, el, sortable.options);
initialized.sortable = sortable;
initialized.options = sortable.options;
sortable[pluginName] = initialized;
// Add default options from plugin
_extends(defaults, initialized.defaults);
});
for (let option in sortable.options) {
if (!sortable.options.hasOwnProperty(option)) continue;
let modified = this.modifyOption(sortable, option, sortable.options[option]);
if (typeof modified !== 'undefined') {
sortable.options[option] = modified;
}
}
},
getEventProperties(name, sortable) {
let eventProperties = {};
plugins.forEach(plugin => {
if (typeof plugin.eventProperties !== 'function') return;
_extends(eventProperties, plugin.eventProperties.call(sortable[plugin.pluginName], name));
});
return eventProperties;
},
modifyOption(sortable, name, value) {
let modifiedValue;
plugins.forEach(plugin => {
// Plugin must exist on the Sortable
if (!sortable[plugin.pluginName]) return;
// If static option listener exists for this option, call in the context of the Sortable's instance of this plugin
if (plugin.optionListeners && typeof plugin.optionListeners[name] === 'function') {
modifiedValue = plugin.optionListeners[name].call(sortable[plugin.pluginName], value);
}
});
return modifiedValue;
}
};
function dispatchEvent({
sortable,
rootEl,
name,
targetEl,
cloneEl,
toEl,
fromEl,
oldIndex,
newIndex,
oldDraggableIndex,
newDraggableIndex,
originalEvent,
putSortable,
extraEventProperties
}) {
sortable = sortable || rootEl && rootEl[expando];
if (!sortable) return;
let evt,
options = sortable.options,
onName = 'on' + name.charAt(0).toUpperCase() + name.substr(1);
// Support for new CustomEvent feature
if (window.CustomEvent && !IE11OrLess && !Edge) {
evt = new CustomEvent(name, {
bubbles: true,
cancelable: true
});
} else {
evt = document.createEvent('Event');
evt.initEvent(name, true, true);
}
evt.to = toEl || rootEl;
evt.from = fromEl || rootEl;
evt.item = targetEl || rootEl;
evt.clone = cloneEl;
evt.oldIndex = oldIndex;
evt.newIndex = newIndex;
evt.oldDraggableIndex = oldDraggableIndex;
evt.newDraggableIndex = newDraggableIndex;
evt.originalEvent = originalEvent;
evt.pullMode = putSortable ? putSortable.lastPutMode : undefined;
let allEventProperties = {
...extraEventProperties,
...PluginManager.getEventProperties(name, sortable)
};
for (let option in allEventProperties) {
evt[option] = allEventProperties[option];
}
if (rootEl) {
rootEl.dispatchEvent(evt);
}
if (options[onName]) {
options[onName].call(sortable, evt);
}
}
let pluginEvent = function (eventName, sortable, {
evt: originalEvent,
...data
} = {}) {
PluginManager.pluginEvent.bind(Sortable)(eventName, sortable, {
dragEl,
parentEl,
ghostEl,
rootEl,
nextEl,
lastDownEl,
cloneEl,
cloneHidden,
dragStarted: moved,
putSortable,
activeSortable: Sortable.active,
originalEvent,
oldIndex,
oldDraggableIndex,
newIndex,
newDraggableIndex,
hideGhostForTarget: _hideGhostForTarget,
unhideGhostForTarget: _unhideGhostForTarget,
cloneNowHidden() {
cloneHidden = true;
},
cloneNowShown() {
cloneHidden = false;
},
dispatchSortableEvent(name) {
_dispatchEvent({
sortable,
name,
originalEvent
});
},
...data
});
};
function _dispatchEvent(info) {
dispatchEvent({
putSortable,
cloneEl,
targetEl: dragEl,
rootEl,
oldIndex,
oldDraggableIndex,
newIndex,
newDraggableIndex,
...info
});
}
let dragEl,
parentEl,
ghostEl,
rootEl,
nextEl,
lastDownEl,
cloneEl,
cloneHidden,
oldIndex,
newIndex,
oldDraggableIndex,
newDraggableIndex,
activeGroup,
putSortable,
awaitingDragStarted = false,
ignoreNextClick = false,
sortables = [],
tapEvt,
touchEvt,
lastDx,
lastDy,
tapDistanceLeft,
tapDistanceTop,
moved,
lastTarget,
lastDirection,
pastFirstInvertThresh = false,
isCircumstantialInvert = false,
targetMoveDistance,
// For positioning ghost absolutely
ghostRelativeParent,
ghostRelativeParentInitialScroll = [],
// (left, top)
_silent = false,
savedInputChecked = [];
/** @const */
const documentExists = typeof document !== 'undefined',
PositionGhostAbsolutely = IOS,
CSSFloatProperty = Edge || IE11OrLess ? 'cssFloat' : 'float',
// This will not pass for IE9, because IE9 DnD only works on anchors
supportDraggable = documentExists && !ChromeForAndroid && !IOS && 'draggable' in document.createElement('div'),
supportCssPointerEvents = function () {
if (!documentExists) return;
// false when <= IE11
if (IE11OrLess) {
return false;
}
let el = document.createElement('x');
el.style.cssText = 'pointer-events:auto';
return el.style.pointerEvents === 'auto';
}(),
_detectDirection = function (el, options) {
let elCSS = css(el),
elWidth = parseInt(elCSS.width) - parseInt(elCSS.paddingLeft) - parseInt(elCSS.paddingRight) - parseInt(elCSS.borderLeftWidth) - parseInt(elCSS.borderRightWidth),
child1 = getChild(el, 0, options),
child2 = getChild(el, 1, options),
firstChildCSS = child1 && css(child1),
secondChildCSS = child2 && css(child2),
firstChildWidth = firstChildCSS && parseInt(firstChildCSS.marginLeft) + parseInt(firstChildCSS.marginRight) + getRect(child1).width,
secondChildWidth = secondChildCSS && parseInt(secondChildCSS.marginLeft) + parseInt(secondChildCSS.marginRight) + getRect(child2).width;
if (elCSS.display === 'flex') {
return elCSS.flexDirection === 'column' || elCSS.flexDirection === 'column-reverse' ? 'vertical' : 'horizontal';
}
if (elCSS.display === 'grid') {
return elCSS.gridTemplateColumns.split(' ').length <= 1 ? 'vertical' : 'horizontal';
}
if (child1 && firstChildCSS.float && firstChildCSS.float !== 'none') {
let touchingSideChild2 = firstChildCSS.float === 'left' ? 'left' : 'right';
return child2 && (secondChildCSS.clear === 'both' || secondChildCSS.clear === touchingSideChild2) ? 'vertical' : 'horizontal';
}
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';
},
_dragElInRowColumn = function (dragRect, targetRect, vertical) {
let dragElS1Opp = vertical ? dragRect.left : dragRect.top,
dragElS2Opp = vertical ? dragRect.right : dragRect.bottom,
dragElOppLength = vertical ? dragRect.width : dragRect.height,
targetS1Opp = vertical ? targetRect.left : targetRect.top,
targetS2Opp = vertical ? targetRect.right : targetRect.bottom,
targetOppLength = vertical ? targetRect.width : targetRect.height;
return dragElS1Opp === targetS1Opp || dragElS2Opp === targetS2Opp || dragElS1Opp + dragElOppLength / 2 === targetS1Opp + targetOppLength / 2;
},
/**
* Detects first nearest empty sortable to X and Y position using emptyInsertThreshold.
* @param {Number} x X position
* @param {Number} y Y position
* @return {HTMLElement} Element of the first found nearest Sortable
*/
_detectNearestEmptySortable = function (x, y) {
let ret;
sortables.some(sortable => {
const threshold = sortable[expando].options.emptyInsertThreshold;
if (!threshold || lastChild(sortable)) return;
const rect = getRect(sortable),
insideHorizontally = x >= rect.left - threshold && x <= rect.right + threshold,
insideVertically = y >= rect.top - threshold && y <= rect.bottom + threshold;
if (insideHorizontally && insideVertically) {
return ret = sortable;
}
});
return ret;
},
_prepareGroup = function (options) {
function toFn(value, pull) {
return function (to, from, dragEl, evt) {
let sameGroup = to.options.group.name && from.options.group.name && to.options.group.name === from.options.group.name;
if (value == null && (pull || sameGroup)) {
// Default pull value
// Default pull and put value if same group
return true;
} else if (value == null || value === false) {
return false;
} else if (pull && value === 'clone') {
return value;
} else if (typeof value === 'function') {
return toFn(value(to, from, dragEl, evt), pull)(to, from, dragEl, evt);
} else {
let otherGroup = (pull ? to : from).options.group.name;
return value === true || typeof value === 'string' && value === otherGroup || value.join && value.indexOf(otherGroup) > -1;
}
};
}
let group = {};
let originalGroup = options.group;
if (!originalGroup || typeof originalGroup != 'object') {
originalGroup = {
name: originalGroup
};
}
group.name = originalGroup.name;
group.checkPull = toFn(originalGroup.pull, true);
group.checkPut = toFn(originalGroup.put);
group.revertClone = originalGroup.revertClone;
options.group = group;
},
_hideGhostForTarget = function () {
if (!supportCssPointerEvents && ghostEl) {
css(ghostEl, 'display', 'none');
}
},
_unhideGhostForTarget = function () {
if (!supportCssPointerEvents && ghostEl) {
css(ghostEl, 'display', '');
}
};
// #1184 fix - Prevent click event on fallback if dragged but item not changed position
if (documentExists && !ChromeForAndroid) {
document.addEventListener('click', function (evt) {
if (ignoreNextClick) {
evt.preventDefault();
evt.stopPropagation && evt.stopPropagation();
evt.stopImmediatePropagation && evt.stopImmediatePropagation();
ignoreNextClick = false;
return false;
}
}, true);
}
let nearestEmptyInsertDetectEvent = function (evt) {
if (dragEl) {
evt = evt.touches ? evt.touches[0] : evt;
let nearest = _detectNearestEmptySortable(evt.clientX, evt.clientY);
if (nearest) {
// Create imitation event
let event = {};
for (let i in evt) {
if (evt.hasOwnProperty(i)) {
event[i] = evt[i];
}
}
event.target = event.rootEl = nearest;
event.preventDefault = void 0;
event.stopPropagation = void 0;
nearest[expando]._onDragOver(event);
}
}
};
let _checkOutsideTargetEl = function (evt) {
if (dragEl) {
dragEl.parentNode[expando]._isOutsideThisEl(evt.target);
}
};
/**
* @class Sortable
* @param {HTMLElement} el
* @param {Object} [options]
*/
function Sortable(el, options) {
if (!(el && el.nodeType && el.nodeType === 1)) {
throw `Sortable: \`el\` must be an HTMLElement, not ${{}.toString.call(el)}`;
}
this.el = el; // root element
this.options = options = _extends({}, options);
// Export instance
el[expando] = this;
let defaults = {
group: null,
sort: true,
disabled: false,
store: null,
handle: null,
draggable: /^[uo]l$/i.test(el.nodeName) ? '>li' : '>*',
swapThreshold: 1,
// percentage; 0 <= x <= 1
invertSwap: false,
// invert always
invertedSwapThreshold: null,
// will be set to same as swapThreshold if default
removeCloneOnHide: true,
direction: function () {
return _detectDirection(el, this.options);