/**!
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* Sortable
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* @author RubaXa <trash@rubaxa.org>
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* @author owenm <owen23355@gmail.com>
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* @license MIT
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*/
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(function sortableModule(factory) {
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"use strict";
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if (typeof define === "function" && define.amd) {
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define(factory);
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}
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else if (typeof module != "undefined" && typeof module.exports != "undefined") {
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module.exports = factory();
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}
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else {
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/* jshint sub:true */
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window["Sortable"] = factory();
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}
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})(function sortableFactory() {
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"use strict";
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if (typeof window === "undefined" || !window.document) {
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return function sortableError() {
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throw new Error("Sortable.js requires a window with a document");
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};
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}
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var dragEl,
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parentEl,
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ghostEl,
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cloneEl,
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rootEl,
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nextEl,
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lastDownEl,
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scrollEl,
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scrollParentEl,
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scrollCustomFn,
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oldIndex,
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newIndex,
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activeGroup,
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putSortable,
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autoScrolls = [],
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scrolling = false,
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awaitingDragStarted = false,
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ignoreNextClick = false,
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sortables = [],
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pointerElemChangedInterval,
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lastPointerElemX,
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lastPointerElemY,
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tapEvt,
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touchEvt,
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moved,
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lastTarget,
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lastDirection,
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pastFirstInvertThresh = false,
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isCircumstantialInvert = false,
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lastMode, // 'swap' or 'insert'
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targetMoveDistance,
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// For positioning ghost absolutely
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ghostRelativeParent,
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ghostRelativeParentInitialScroll = [], // (left, top)
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forRepaintDummy,
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realDragElRect, // dragEl rect after current animation
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/** @const */
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R_SPACE = /\s+/g,
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expando = 'Sortable' + (new Date).getTime(),
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win = window,
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document = win.document,
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parseInt = win.parseInt,
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setTimeout = win.setTimeout,
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$ = win.jQuery || win.Zepto,
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Polymer = win.Polymer,
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captureMode = {
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capture: false,
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passive: false
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},
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IE11OrLess = !!navigator.userAgent.match(/(?:Trident.*rv[ :]?11\.|msie|iemobile)/i),
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Edge = !!navigator.userAgent.match(/Edge/i),
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FireFox = !!navigator.userAgent.match(/firefox/i),
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Safari = !!(navigator.userAgent.match(/safari/i) && !navigator.userAgent.match(/chrome/i) && !navigator.userAgent.match(/android/i)),
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IOS = !!(navigator.userAgent.match(/iP(ad|od|hone)/i)),
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PositionGhostAbsolutely = IOS,
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CSSFloatProperty = Edge || IE11OrLess ? 'cssFloat' : 'float',
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// This will not pass for IE9, because IE9 DnD only works on anchors
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supportDraggable = ('draggable' in document.createElement('div')),
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supportCssPointerEvents = (function() {
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// false when <= IE11
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if (IE11OrLess) {
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return false;
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}
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var el = document.createElement('x');
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el.style.cssText = 'pointer-events:auto';
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return el.style.pointerEvents === 'auto';
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})(),
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_silent = false,
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_alignedSilent = false,
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abs = Math.abs,
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min = Math.min,
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max = Math.max,
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savedInputChecked = [],
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_detectDirection = function(el, options) {
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var elCSS = _css(el),
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elWidth = parseInt(elCSS.width)
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- parseInt(elCSS.paddingLeft)
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- parseInt(elCSS.paddingRight)
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- parseInt(elCSS.borderLeftWidth)
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- parseInt(elCSS.borderRightWidth),
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child1 = _getChild(el, 0, options),
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child2 = _getChild(el, 1, options),
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firstChildCSS = child1 && _css(child1),
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secondChildCSS = child2 && _css(child2),
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firstChildWidth = firstChildCSS && parseInt(firstChildCSS.marginLeft) + parseInt(firstChildCSS.marginRight) + _getRect(child1).width,
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secondChildWidth = secondChildCSS && parseInt(secondChildCSS.marginLeft) + parseInt(secondChildCSS.marginRight) + _getRect(child2).width;
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if (elCSS.display === 'flex') {
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return elCSS.flexDirection === 'column' || elCSS.flexDirection === 'column-reverse'
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? 'vertical' : 'horizontal';
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}
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if (elCSS.display === 'grid') {
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return elCSS.gridTemplateColumns.split(' ').length <= 1 ? 'vertical' : 'horizontal';
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}
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if (child1 && firstChildCSS.float !== 'none') {
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var touchingSideChild2 = firstChildCSS.float === 'left' ? 'left' : 'right';
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return child2 && (secondChildCSS.clear === 'both' || secondChildCSS.clear === touchingSideChild2) ?
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'vertical' : 'horizontal';
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}
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return (child1 &&
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(
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firstChildCSS.display === 'block' ||
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firstChildCSS.display === 'flex' ||
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firstChildCSS.display === 'table' ||
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firstChildCSS.display === 'grid' ||
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firstChildWidth >= elWidth &&
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elCSS[CSSFloatProperty] === 'none' ||
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child2 &&
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elCSS[CSSFloatProperty] === 'none' &&
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firstChildWidth + secondChildWidth > elWidth
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) ?
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'vertical' : 'horizontal'
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);
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},
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/**
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* Detects first nearest empty sortable to X and Y position using emptyInsertThreshold.
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* @param {Number} x X position
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* @param {Number} y Y position
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* @return {HTMLElement} Element of the first found nearest Sortable
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*/
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_detectNearestEmptySortable = function(x, y) {
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for (var i = 0; i < sortables.length; i++) {
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if (_lastChild(sortables[i])) continue;
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var rect = _getRect(sortables[i]),
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threshold = sortables[i][expando].options.emptyInsertThreshold,
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insideHorizontally = x >= (rect.left - threshold) && x <= (rect.right + threshold),
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insideVertically = y >= (rect.top - threshold) && y <= (rect.bottom + threshold);
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if (insideHorizontally && insideVertically) {
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return sortables[i];
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}
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}
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},
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_isClientInRowColumn = function(x, y, el, axis, options) {
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var targetRect = _getRect(el),
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targetS1Opp = axis === 'vertical' ? targetRect.left : targetRect.top,
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targetS2Opp = axis === 'vertical' ? targetRect.right : targetRect.bottom,
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mouseOnOppAxis = axis === 'vertical' ? x : y;
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return targetS1Opp < mouseOnOppAxis && mouseOnOppAxis < targetS2Opp;
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},
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_isElInRowColumn = function(el1, el2, axis) {
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var el1Rect = el1 === dragEl && realDragElRect || _getRect(el1),
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el2Rect = el2 === dragEl && realDragElRect || _getRect(el2),
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el1S1Opp = axis === 'vertical' ? el1Rect.left : el1Rect.top,
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el1S2Opp = axis === 'vertical' ? el1Rect.right : el1Rect.bottom,
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el1OppLength = axis === 'vertical' ? el1Rect.width : el1Rect.height,
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el2S1Opp = axis === 'vertical' ? el2Rect.left : el2Rect.top,
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el2S2Opp = axis === 'vertical' ? el2Rect.right : el2Rect.bottom,
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el2OppLength = axis === 'vertical' ? el2Rect.width : el2Rect.height;
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return (
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el1S1Opp === el2S1Opp ||
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el1S2Opp === el2S2Opp ||
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(el1S1Opp + el1OppLength / 2) === (el2S1Opp + el2OppLength / 2)
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);
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},
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_getParentAutoScrollElement = function(el, includeSelf) {
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// skip to window
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if (!el || !el.getBoundingClientRect) return _getWindowScrollingElement();
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var elem = el;
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var gotSelf = false;
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do {
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// we don't need to get elem css if it isn't even overflowing in the first place (performance)
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if (elem.clientWidth < elem.scrollWidth || elem.clientHeight < elem.scrollHeight) {
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var elemCSS = _css(elem);
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if (
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elem.clientWidth < elem.scrollWidth && (elemCSS.overflowX == 'auto' || elemCSS.overflowX == 'scroll') ||
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elem.clientHeight < elem.scrollHeight && (elemCSS.overflowY == 'auto' || elemCSS.overflowY == 'scroll')
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) {
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if (!elem || !elem.getBoundingClientRect || elem === document.body) return _getWindowScrollingElement();
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if (gotSelf || includeSelf) return elem;
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gotSelf = true;
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}
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}
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/* jshint boss:true */
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} while (elem = elem.parentNode);
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return _getWindowScrollingElement();
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},
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_getWindowScrollingElement = function() {
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if (IE11OrLess) {
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return document.documentElement;
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} else {
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return document.scrollingElement;
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}
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},
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_scrollBy = function(el, x, y) {
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el.scrollLeft += x;
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el.scrollTop += y;
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},
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_autoScroll = _throttle(function (/**Event*/evt, /**Object*/options, /**HTMLElement*/rootEl, /**Boolean*/isFallback) {
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// Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=505521
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if (options.scroll) {
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var _this = rootEl ? rootEl[expando] : window,
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sens = options.scrollSensitivity,
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speed = options.scrollSpeed,
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x = evt.clientX,
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y = evt.clientY,
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winScroller = _getWindowScrollingElement(),
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scrollThisInstance = false;
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// Detect scrollEl
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if (scrollParentEl !== rootEl) {
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_clearAutoScrolls();
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scrollEl = options.scroll;
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scrollCustomFn = options.scrollFn;
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if (scrollEl === true) {
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scrollEl = _getParentAutoScrollElement(rootEl, true);
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scrollParentEl = scrollEl;
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}
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}
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var layersOut = 0;
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var currentParent = scrollEl;
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do {
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var el = currentParent,
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rect = _getRect(el),
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top = rect.top,
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bottom = rect.bottom,
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left = rect.left,
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right = rect.right,
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width = rect.width,
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height = rect.height,
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scrollWidth,
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scrollHeight,
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css,
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vx,
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vy,
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canScrollX,
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canScrollY,
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scrollPosX,
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scrollPosY;
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scrollWidth = el.scrollWidth;
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scrollHeight = el.scrollHeight;
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css = _css(el);
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scrollPosX = el.scrollLeft;
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scrollPosY = el.scrollTop;
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if (el === winScroller) {
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canScrollX = width < scrollWidth && (css.overflowX === 'auto' || css.overflowX === 'scroll' || css.overflowX === 'visible');
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canScrollY = height < scrollHeight && (css.overflowY === 'auto' || css.overflowY === 'scroll' || css.overflowY === 'visible');
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} else {
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canScrollX = width < scrollWidth && (css.overflowX === 'auto' || css.overflowX === 'scroll');
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canScrollY = height < scrollHeight && (css.overflowY === 'auto' || css.overflowY === 'scroll');
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}
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vx = canScrollX && (abs(right - x) <= sens && (scrollPosX + width) < scrollWidth) - (abs(left - x) <= sens && !!scrollPosX);
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vy = canScrollY && (abs(bottom - y) <= sens && (scrollPosY + height) < scrollHeight) - (abs(top - y) <= sens && !!scrollPosY);
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if (!autoScrolls[layersOut]) {
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for (var i = 0; i <= layersOut; i++) {
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if (!autoScrolls[i]) {
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autoScrolls[i] = {};
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}
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}
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}
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if (autoScrolls[layersOut].vx != vx || autoScrolls[layersOut].vy != vy || autoScrolls[layersOut].el !== el) {
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autoScrolls[layersOut].el = el;
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autoScrolls[layersOut].vx = vx;
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autoScrolls[layersOut].vy = vy;
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clearInterval(autoScrolls[layersOut].pid);
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if (el && (vx != 0 || vy != 0)) {
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scrollThisInstance = true;
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/* jshint loopfunc:true */
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autoScrolls[layersOut].pid = setInterval((function () {
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// emulate drag over during autoscroll (fallback), emulating native DnD behaviour
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if (isFallback && this.layer === 0) {
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Sortable.active._emulateDragOver(true);
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Sortable.active._onTouchMove(touchEvt, true);
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}
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var scrollOffsetY = autoScrolls[this.layer].vy ? autoScrolls[this.layer].vy * speed : 0;
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var scrollOffsetX = autoScrolls[this.layer].vx ? autoScrolls[this.layer].vx * speed : 0;
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if ('function' === typeof(scrollCustomFn)) {
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if (scrollCustomFn.call(_this, scrollOffsetX, scrollOffsetY, evt, touchEvt, autoScrolls[this.layer].el) !== 'continue') {
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return;
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}
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}
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_scrollBy(autoScrolls[this.layer].el, scrollOffsetX, scrollOffsetY);
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}).bind({layer: layersOut}), 24);
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}
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}
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layersOut++;
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} while (options.bubbleScroll && currentParent !== winScroller && (currentParent = _getParentAutoScrollElement(currentParent, false)));
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scrolling = scrollThisInstance; // in case another function catches scrolling as false in between when it is not
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}
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}, 30),
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_clearAutoScrolls = function () {
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autoScrolls.forEach(function(autoScroll) {
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clearInterval(autoScroll.pid);
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});
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autoScrolls = [];
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},
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_prepareGroup = function (options) {
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function toFn(value, pull) {
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return function(to, from, dragEl, evt) {
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var sameGroup = to.options.group.name &&
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from.options.group.name &&
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to.options.group.name === from.options.group.name;
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if (value == null && (pull || sameGroup)) {
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// Default pull value
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// Default pull and put value if same group
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return true;
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} else if (value == null || value === false) {
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return false;
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} else if (pull && value === 'clone') {
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return value;
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} else if (typeof value === 'function') {
|
return toFn(value(to, from, dragEl, evt), pull)(to, from, dragEl, evt);
|
} else {
|
var otherGroup = (pull ? to : from).options.group.name;
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return (value === true ||
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(typeof value === 'string' && value === otherGroup) ||
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(value.join && value.indexOf(otherGroup) > -1));
|
}
|
};
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}
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var group = {};
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var originalGroup = options.group;
|
|
if (!originalGroup || typeof originalGroup != 'object') {
|
originalGroup = {name: originalGroup};
|
}
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group.name = originalGroup.name;
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group.checkPull = toFn(originalGroup.pull, true);
|
group.checkPut = toFn(originalGroup.put);
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group.revertClone = originalGroup.revertClone;
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options.group = group;
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},
|
|
_checkAlignment = function(evt) {
|
if (!dragEl || !dragEl.parentNode) return;
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dragEl.parentNode[expando] && dragEl.parentNode[expando]._computeIsAligned(evt);
|
},
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|
_isTrueParentSortable = function(el, target) {
|
var trueParent = target;
|
while (!trueParent[expando]) {
|
trueParent = trueParent.parentNode;
|
}
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return el === trueParent;
|
},
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|
_artificalBubble = function(sortable, originalEvt, method) {
|
// Artificial IE bubbling
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var nextParent = sortable.parentNode;
|
while (nextParent && !nextParent[expando]) {
|
nextParent = nextParent.parentNode;
|
}
|
|
if (nextParent) {
|
nextParent[expando][method](_extend(originalEvt, {
|
artificialBubble: true
|
}));
|
}
|
},
|
|
_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
|
document.addEventListener('click', function(evt) {
|
if (ignoreNextClick) {
|
evt.preventDefault();
|
evt.stopPropagation && evt.stopPropagation();
|
evt.stopImmediatePropagation && evt.stopImmediatePropagation();
|
ignoreNextClick = false;
|
return false;
|
}
|
}, true);
|
|
var nearestEmptyInsertDetectEvent = function(evt) {
|
evt = evt.touches ? evt.touches[0] : evt;
|
if (dragEl) {
|
var nearest = _detectNearestEmptySortable(evt.clientX, evt.clientY);
|
|
if (nearest) {
|
nearest[expando]._onDragOver({
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clientX: evt.clientX,
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clientY: evt.clientY,
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target: nearest,
|
rootEl: nearest
|
});
|
}
|
}
|
};
|
// We do not want this to be triggered if completed (bubbling canceled), so only define it here
|
_on(document, 'dragover', nearestEmptyInsertDetectEvent);
|
_on(document, 'mousemove', nearestEmptyInsertDetectEvent);
|
_on(document, 'touchmove', nearestEmptyInsertDetectEvent);
|
|
/**
|
* @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, not ' + {}.toString.call(el);
|
}
|
|
this.el = el; // root element
|
this.options = options = _extend({}, options);
|
|
|
// Export instance
|
el[expando] = this;
|
|
// Default options
|
var defaults = {
|
group: null,
|
sort: true,
|
disabled: false,
|
store: null,
|
handle: null,
|
scroll: true,
|
scrollSensitivity: 30,
|
scrollSpeed: 10,
|
bubbleScroll: true,
|
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);
|
},
|
ghostClass: 'sortable-ghost',
|
chosenClass: 'sortable-chosen',
|
dragClass: 'sortable-drag',
|
ignore: 'a, img',
|
filter: null,
|
preventOnFilter: true,
|
animation: 0,
|
easing: null,
|
setData: function (dataTransfer, dragEl) {
|
dataTransfer.setData('Text', dragEl.textContent);
|
},
|
dropBubble: false,
|
dragoverBubble: false,
|
dataIdAttr: 'data-id',
|
delay: 0,
|
touchStartThreshold: parseInt(window.devicePixelRatio, 10) || 1,
|
forceFallback: false,
|
fallbackClass: 'sortable-fallback',
|
fallbackOnBody: false,
|
fallbackTolerance: 0,
|
fallbackOffset: {x: 0, y: 0},
|
supportPointer: Sortable.supportPointer !== false && (
|
('PointerEvent' in window) ||
|
window.navigator && ('msPointerEnabled' in window.navigator) // microsoft
|
),
|
emptyInsertThreshold: 5
|
};
|
|
|
// 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) === '_' && typeof this[fn] === 'function') {
|
this[fn] = this[fn].bind(this);
|
}
|
}
|
|
// Setup drag mode
|
this.nativeDraggable = options.forceFallback ? false : supportDraggable;
|
|
if (this.nativeDraggable) {
|
// Touch start threshold cannot be greater than the native dragstart threshold
|
this.options.touchStartThreshold = 1;
|
}
|
|
// Bind events
|
if (options.supportPointer) {
|
_on(el, 'pointerdown', this._onTapStart);
|
} else {
|
_on(el, 'mousedown', this._onTapStart);
|
_on(el, 'touchstart', this._onTapStart);
|
}
|
|
if (this.nativeDraggable) {
|
_on(el, 'dragover', this);
|
_on(el, 'dragenter', this);
|
}
|
|
sortables.push(this.el);
|
|
// Restore sorting
|
options.store && options.store.get && this.sort(options.store.get(this) || []);
|
}
|
|
Sortable.prototype = /** @lends Sortable.prototype */ {
|
constructor: Sortable,
|
|
_computeIsAligned: function(evt) {
|
var target;
|
|
if (ghostEl && !supportCssPointerEvents) {
|
_hideGhostForTarget();
|
target = document.elementFromPoint(evt.clientX, evt.clientY);
|
_unhideGhostForTarget();
|
} else {
|
target = evt.target;
|
}
|
|
target = _closest(target, this.options.draggable, this.el, false);
|
if (_alignedSilent) return;
|
if (!dragEl || dragEl.parentNode !== this.el) return;
|
|
var children = this.el.children;
|
for (var i = 0; i < children.length; i++) {
|
// Don't change for target in case it is changed to aligned before onDragOver is fired
|
if (_closest(children[i], this.options.draggable, this.el, false) && children[i] !== target) {
|
children[i].sortableMouseAligned = _isClientInRowColumn(evt.clientX, evt.clientY, children[i], this._getDirection(evt, null), this.options);
|
}
|
}
|
// Used for nulling last target when not in element, nothing to do with checking if aligned
|
if (!_closest(target, this.options.draggable, this.el, true)) {
|
lastTarget = null;
|
}
|
|
_alignedSilent = true;
|
setTimeout(function() {
|
_alignedSilent = false;
|
}, 30);
|
|
},
|
|
_getDirection: function(evt, target) {
|
return (typeof this.options.direction === 'function') ? this.options.direction.call(this, evt, target, dragEl) : this.options.direction;
|
},
|
|
_onTapStart: function (/** Event|TouchEvent */evt) {
|
if (!evt.cancelable) return;
|
var _this = this,
|
el = this.el,
|
options = this.options,
|
preventOnFilter = options.preventOnFilter,
|
type = evt.type,
|
touch = evt.touches && evt.touches[0],
|
target = (touch || evt).target,
|
originalTarget = evt.target.shadowRoot && ((evt.path && evt.path[0]) || (evt.composedPath && evt.composedPath()[0])) || target,
|
filter = options.filter,
|
startIndex;
|
|
_saveInputCheckedState(el);
|
|
|
// IE: Calls events in capture mode if event element is nested. This ensures only correct element's _onTapStart goes through.
|
// This process is also done in _onDragOver
|
if (IE11OrLess && !evt.artificialBubble && !_isTrueParentSortable(el, target)) {
|
return;
|
}
|
|
// 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 (/mousedown|pointerdown/.test(type) && evt.button !== 0 || options.disabled) {
|
return; // only left button and enabled
|
}
|
|
// cancel dnd if original target is content editable
|
if (originalTarget.isContentEditable) {
|
return;
|
}
|
|
target = _closest(target, options.draggable, el, false);
|
|
if (!target) {
|
if (IE11OrLess) {
|
_artificalBubble(el, evt, '_onTapStart');
|
}
|
return;
|
}
|
|
if (lastDownEl === target) {
|
// Ignoring duplicate `down`
|
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, el, startIndex);
|
preventOnFilter && evt.cancelable && evt.preventDefault();
|
return; // cancel dnd
|
}
|
}
|
else if (filter) {
|
filter = filter.split(',').some(function (criteria) {
|
criteria = _closest(originalTarget, criteria.trim(), el, false);
|
|
if (criteria) {
|
_dispatchEvent(_this, criteria, 'filter', target, el, el, startIndex);
|
return true;
|
}
|
});
|
|
if (filter) {
|
preventOnFilter && evt.cancelable && evt.preventDefault();
|
return; // cancel dnd
|
}
|
}
|
|
if (options.handle && !_closest(originalTarget, options.handle, el, false)) {
|
return;
|
}
|
|
// Prepare `dragstart`
|
this._prepareDragStart(evt, touch, target, startIndex);
|
},
|
|
|
_handleAutoScroll: function(evt, fallback) {
|
if (!dragEl || !this.options.scroll) return;
|
var x = evt.clientX,
|
y = evt.clientY,
|
|
elem = document.elementFromPoint(x, y),
|
_this = this;
|
|
// IE does not seem to have native autoscroll,
|
// Edge's autoscroll seems too conditional,
|
// MACOS Safari does not have autoscroll,
|
// Firefox and Chrome are good
|
if (fallback || Edge || IE11OrLess || Safari) {
|
_autoScroll(evt, _this.options, elem, fallback);
|
|
// Listener for pointer element change
|
var ogElemScroller = _getParentAutoScrollElement(elem, true);
|
if (
|
scrolling &&
|
(
|
!pointerElemChangedInterval ||
|
x !== lastPointerElemX ||
|
y !== lastPointerElemY
|
)
|
) {
|
|
pointerElemChangedInterval && clearInterval(pointerElemChangedInterval);
|
// Detect for pointer elem change, emulating native DnD behaviour
|
pointerElemChangedInterval = setInterval(function() {
|
if (!dragEl) return;
|
// could also check if scroll direction on newElem changes due to parent autoscrolling
|
var newElem = _getParentAutoScrollElement(document.elementFromPoint(x, y), true);
|
if (newElem !== ogElemScroller) {
|
ogElemScroller = newElem;
|
_clearAutoScrolls();
|
_autoScroll(evt, _this.options, ogElemScroller, fallback);
|
}
|
}, 10);
|
lastPointerElemX = x;
|
lastPointerElemY = y;
|
}
|
|
} else {
|
// if DnD is enabled (and browser has good autoscrolling), first autoscroll will already scroll, so get parent autoscroll of first autoscroll
|
if (!_this.options.bubbleScroll || _getParentAutoScrollElement(elem, true) === _getWindowScrollingElement()) {
|
_clearAutoScrolls();
|
return;
|
}
|
_autoScroll(evt, _this.options, _getParentAutoScrollElement(elem, false), false);
|
}
|
},
|
|
_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)) {
|
rootEl = el;
|
dragEl = target;
|
parentEl = dragEl.parentNode;
|
nextEl = dragEl.nextSibling;
|
lastDownEl = target;
|
activeGroup = options.group;
|
oldIndex = startIndex;
|
|
tapEvt = {
|
target: dragEl,
|
clientX: (touch || evt).clientX,
|
clientY: (touch || evt).clientY
|
};
|
|
this._lastX = (touch || evt).clientX;
|
this._lastY = (touch || evt).clientY;
|
|
dragEl.style['will-change'] = 'all';
|
// undo animation if needed
|
dragEl.style.transition = '';
|
dragEl.style.transform = '';
|
|
dragStartFn = function () {
|
// Delayed drag has been triggered
|
// we can re-enable the events: touchmove/mousemove
|
_this._disableDelayedDragEvents();
|
|
if (!FireFox && _this.nativeDraggable) {
|
dragEl.draggable = true;
|
}
|
|
// Bind the events: dragstart/dragend
|
_this._triggerDragStart(evt, touch);
|
|
// Drag start event
|
_dispatchEvent(_this, rootEl, 'choose', dragEl, rootEl, rootEl, oldIndex);
|
|
// Chosen item
|
_toggleClass(dragEl, options.chosenClass, true);
|
};
|
|
// Disable "draggable"
|
options.ignore.split(',').forEach(function (criteria) {
|
_find(dragEl, criteria.trim(), _disableDraggable);
|
});
|
|
if (options.supportPointer) {
|
_on(ownerDocument, 'pointerup', _this._onDrop);
|
} else {
|
_on(ownerDocument, 'mouseup', _this._onDrop);
|
_on(ownerDocument, 'touchend', _this._onDrop);
|
_on(ownerDocument, 'touchcancel', _this._onDrop);
|
}
|
|
// Make dragEl draggable (must be before delay for FireFox)
|
if (FireFox && this.nativeDraggable) {
|
this.options.touchStartThreshold = 4;
|
dragEl.draggable = true;
|
}
|
|
// Delay is impossible for native DnD in Edge or IE
|
if (options.delay && (!this.nativeDraggable || !(Edge || IE11OrLess))) {
|
// 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._delayedDragTouchMoveHandler);
|
_on(ownerDocument, 'touchmove', _this._delayedDragTouchMoveHandler);
|
options.supportPointer && _on(ownerDocument, 'pointermove', _this._delayedDragTouchMoveHandler);
|
|
_this._dragStartTimer = setTimeout(dragStartFn, options.delay);
|
} else {
|
dragStartFn();
|
}
|
}
|
},
|
|
_delayedDragTouchMoveHandler: function (/** TouchEvent|PointerEvent **/e) {
|
var touch = e.touches ? e.touches[0] : e;
|
if (max(abs(touch.clientX - this._lastX), abs(touch.clientY - this._lastY))
|
>= Math.floor(this.options.touchStartThreshold / (this.nativeDraggable && window.devicePixelRatio || 1))
|
) {
|
this._disableDelayedDrag();
|
}
|
},
|
|
_disableDelayedDrag: function () {
|
dragEl && _disableDraggable(dragEl);
|
clearTimeout(this._dragStartTimer);
|
|
this._disableDelayedDragEvents();
|
},
|
|
_disableDelayedDragEvents: function () {
|
var ownerDocument = this.el.ownerDocument;
|
_off(ownerDocument, 'mouseup', this._disableDelayedDrag);
|
_off(ownerDocument, 'touchend', this._disableDelayedDrag);
|
_off(ownerDocument, 'touchcancel', this._disableDelayedDrag);
|
_off(ownerDocument, 'mousemove', this._delayedDragTouchMoveHandler);
|
_off(ownerDocument, 'touchmove', this._delayedDragTouchMoveHandler);
|
_off(ownerDocument, 'pointermove', this._delayedDragTouchMoveHandler);
|
},
|
|
_triggerDragStart: function (/** Event */evt, /** Touch */touch) {
|
touch = touch || (evt.pointerType == 'touch' ? evt : null);
|
|
if (!this.nativeDraggable || touch) {
|
if (this.options.supportPointer) {
|
_on(document, 'pointermove', this._onTouchMove);
|
} else if (touch) {
|
_on(document, 'touchmove', this._onTouchMove);
|
} else {
|
_on(document, 'mousemove', this._onTouchMove);
|
}
|
} else {
|
_on(dragEl, 'dragend', this);
|
_on(rootEl, 'dragstart', this._onDragStart);
|
}
|
|
try {
|
if (document.selection) {
|
// Timeout neccessary for IE9
|
_nextTick(function () {
|
document.selection.empty();
|
});
|
} else {
|
window.getSelection().removeAllRanges();
|
}
|
} catch (err) {
|
}
|
},
|
|
_dragStarted: function (fallback, evt) {
|
awaitingDragStarted = false;
|
if (rootEl && dragEl) {
|
if (this.nativeDraggable) {
|
_on(document, 'dragover', this._handleAutoScroll);
|
_on(document, 'dragover', _checkAlignment);
|
}
|
var options = this.options;
|
|
// Apply effect
|
!fallback && _toggleClass(dragEl, options.dragClass, false);
|
_toggleClass(dragEl, options.ghostClass, true);
|
|
// In case dragging an animated element
|
_css(dragEl, 'transform', '');
|
|
Sortable.active = this;
|
|
fallback && this._appendGhost();
|
|
// Drag start event
|
_dispatchEvent(this, rootEl, 'start', dragEl, rootEl, rootEl, oldIndex, undefined, evt);
|
} else {
|
this._nulling();
|
}
|
},
|
|
_emulateDragOver: function (forAutoScroll) {
|
if (touchEvt) {
|
if (this._lastX === touchEvt.clientX && this._lastY === touchEvt.clientY && !forAutoScroll) {
|
return;
|
}
|
this._lastX = touchEvt.clientX;
|
this._lastY = touchEvt.clientY;
|
|
_hideGhostForTarget();
|
|
var target = document.elementFromPoint(touchEvt.clientX, touchEvt.clientY);
|
var parent = target;
|
|
while (target && target.shadowRoot) {
|
target = target.shadowRoot.elementFromPoint(touchEvt.clientX, touchEvt.clientY);
|
parent = target;
|
}
|
|
if (parent) {
|
do {
|
if (parent[expando]) {
|
var inserted;
|
|
inserted = parent[expando]._onDragOver({
|
clientX: touchEvt.clientX,
|
clientY: touchEvt.clientY,
|
target: target,
|
rootEl: parent
|
});
|
|
if (inserted && !this.options.dragoverBubble) {
|
break;
|
}
|
}
|
|
target = parent; // store last element
|
}
|
/* jshint boss:true */
|
while (parent = parent.parentNode);
|
}
|
dragEl.parentNode[expando]._computeIsAligned(touchEvt);
|
|
_unhideGhostForTarget();
|
}
|
},
|
|
|
_onTouchMove: function (/**TouchEvent*/evt, forAutoScroll) {
|
if (tapEvt) {
|
var options = this.options,
|
fallbackTolerance = options.fallbackTolerance,
|
fallbackOffset = options.fallbackOffset,
|
touch = evt.touches ? evt.touches[0] : evt,
|
matrix = ghostEl && _matrix(ghostEl),
|
scaleX = ghostEl && matrix && matrix.a,
|
scaleY = ghostEl && matrix && matrix.d,
|
relativeScrollOffset = PositionGhostAbsolutely && ghostRelativeParent && _getRelativeScrollOffset(ghostRelativeParent),
|
dx = ((touch.clientX - tapEvt.clientX)
|
+ fallbackOffset.x) / (scaleX || 1)
|
+ (relativeScrollOffset ? (relativeScrollOffset[0] - ghostRelativeParentInitialScroll[0]) : 0) / (scaleX || 1),
|
dy = ((touch.clientY - tapEvt.clientY)
|
+ fallbackOffset.y) / (scaleY || 1)
|
+ (relativeScrollOffset ? (relativeScrollOffset[1] - ghostRelativeParentInitialScroll[1]) : 0) / (scaleY || 1),
|
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 && !awaitingDragStarted) {
|
if (fallbackTolerance &&
|
min(abs(touch.clientX - this._lastX), abs(touch.clientY - this._lastY)) < fallbackTolerance
|
) {
|
return;
|
}
|
this._onDragStart(evt, true);
|
}
|
|
!forAutoScroll && this._handleAutoScroll(touch, true);
|
|
moved = true;
|
touchEvt = touch;
|
|
_css(ghostEl, 'webkitTransform', translate3d);
|
_css(ghostEl, 'mozTransform', translate3d);
|
_css(ghostEl, 'msTransform', translate3d);
|
_css(ghostEl, 'transform', translate3d);
|
|
evt.cancelable && evt.preventDefault();
|
}
|
},
|
|
_appendGhost: function () {
|
// Bug if using scale(): https://stackoverflow.com/questions/2637058
|
// Not being adjusted for
|
if (!ghostEl) {
|
var container = this.options.fallbackOnBody ? document.body : rootEl,
|
rect = _getRect(dragEl, true, container, !PositionGhostAbsolutely),
|
css = _css(dragEl),
|
options = this.options;
|
|
// Position absolutely
|
if (PositionGhostAbsolutely) {
|
// Get relatively positioned parent
|
ghostRelativeParent = container;
|
|
while (
|
_css(ghostRelativeParent, 'position') === 'static' &&
|
_css(ghostRelativeParent, 'transform') === 'none' &&
|
ghostRelativeParent !== document
|
) {
|
ghostRelativeParent = ghostRelativeParent.parentNode;
|
}
|
|
if (ghostRelativeParent !== document) {
|
var ghostRelativeParentRect = _getRect(ghostRelativeParent, true);
|
|
rect.top -= ghostRelativeParentRect.top;
|
rect.left -= ghostRelativeParentRect.left;
|
}
|
|
if (ghostRelativeParent !== document.body && ghostRelativeParent !== document.documentElement) {
|
if (ghostRelativeParent === document) ghostRelativeParent = _getWindowScrollingElement();
|
|
rect.top += ghostRelativeParent.scrollTop;
|
rect.left += ghostRelativeParent.scrollLeft;
|
} else {
|
ghostRelativeParent = _getWindowScrollingElement();
|
}
|
ghostRelativeParentInitialScroll = _getRelativeScrollOffset(ghostRelativeParent);
|
}
|
|
|
ghostEl = dragEl.cloneNode(true);
|
|
_toggleClass(ghostEl, options.ghostClass, false);
|
_toggleClass(ghostEl, options.fallbackClass, true);
|
_toggleClass(ghostEl, options.dragClass, true);
|
|
_css(ghostEl, 'box-sizing', 'border-box');
|
_css(ghostEl, 'margin', 0);
|
_css(ghostEl, 'top', rect.top);
|
_css(ghostEl, 'left', rect.left);
|
_css(ghostEl, 'width', rect.width);
|
_css(ghostEl, 'height', rect.height);
|
_css(ghostEl, 'opacity', '0.8');
|
_css(ghostEl, 'position', (PositionGhostAbsolutely ? 'absolute' : 'fixed'));
|
_css(ghostEl, 'zIndex', '100000');
|
_css(ghostEl, 'pointerEvents', 'none');
|
|
container.appendChild(ghostEl);
|
}
|
},
|
|
_onDragStart: function (/**Event*/evt, /**boolean*/fallback) {
|
var _this = this;
|
var dataTransfer = evt.dataTransfer;
|
var options = _this.options;
|
|
// Setup clone
|
cloneEl = _clone(dragEl);
|
|
cloneEl.draggable = false;
|
cloneEl.style['will-change'] = '';
|
|
this._hideClone();
|
|
_toggleClass(cloneEl, _this.options.chosenClass, false);
|
|
|
// #1143: IFrame support workaround
|
_this._cloneId = _nextTick(function () {
|
if (!_this.options.removeCloneOnHide) {
|
rootEl.insertBefore(cloneEl, dragEl);
|
}
|
_dispatchEvent(_this, rootEl, 'clone', dragEl);
|
});
|
|
|
!fallback && _toggleClass(dragEl, options.dragClass, true);
|
|
// Set proper drop events
|
if (fallback) {
|
ignoreNextClick = true;
|
_this._loopId = setInterval(_this._emulateDragOver, 50);
|
} else {
|
// Undo what was set in _prepareDragStart before drag started
|
_off(document, 'mouseup', _this._onDrop);
|
_off(document, 'touchend', _this._onDrop);
|
_off(document, 'touchcancel', _this._onDrop);
|
|
if (dataTransfer) {
|
dataTransfer.effectAllowed = 'move';
|
options.setData && options.setData.call(_this, dataTransfer, dragEl);
|
}
|
|
_on(document, 'drop', _this);
|
|
// #1276 fix:
|
_css(dragEl, 'transform', 'translateZ(0)');
|
}
|
|
awaitingDragStarted = true;
|
|
_this._dragStartId = _nextTick(_this._dragStarted.bind(_this, fallback, evt));
|
_on(document, 'selectstart', _this);
|
if (Safari) {
|
_css(document.body, 'user-select', 'none');
|
}
|
},
|
|
|
// Returns true - if no further action is needed (either inserted or another condition)
|
_onDragOver: function (/**Event*/evt) {
|
var el = this.el,
|
target = evt.target,
|
dragRect,
|
targetRect,
|
revert,
|
options = this.options,
|
group = options.group,
|
activeSortable = Sortable.active,
|
isOwner = (activeGroup === group),
|
canSort = options.sort,
|
_this = this;
|
|
if (_silent) return;
|
|
// IE event order fix
|
if (IE11OrLess && !evt.rootEl && !evt.artificialBubble && !_isTrueParentSortable(el, target)) {
|
return;
|
}
|
|
// Return invocation when dragEl is inserted (or completed)
|
function completed(insertion) {
|
if (insertion) {
|
if (isOwner) {
|
activeSortable._hideClone();
|
} else {
|
activeSortable._showClone(_this);
|
}
|
|
if (activeSortable) {
|
// Set ghost class to new sortable's ghost class
|
_toggleClass(dragEl, putSortable ? putSortable.options.ghostClass : activeSortable.options.ghostClass, false);
|
_toggleClass(dragEl, options.ghostClass, true);
|
}
|
|
if (putSortable !== _this && _this !== Sortable.active) {
|
putSortable = _this;
|
} else if (_this === Sortable.active) {
|
putSortable = null;
|
}
|
|
// Animation
|
dragRect && _this._animate(dragRect, dragEl);
|
target && targetRect && _this._animate(targetRect, target);
|
}
|
|
|
// Null lastTarget if it is not inside a previously swapped element
|
if ((target === dragEl && !dragEl.animated) || (target === el && !target.animated)) {
|
lastTarget = null;
|
}
|
// no bubbling and not fallback
|
if (!options.dragoverBubble && !evt.rootEl && target !== document) {
|
_this._handleAutoScroll(evt);
|
dragEl.parentNode[expando]._computeIsAligned(evt);
|
}
|
|
!options.dragoverBubble && evt.stopPropagation && evt.stopPropagation();
|
|
return true;
|
}
|
|
// Call when dragEl has been inserted
|
function changed() {
|
_dispatchEvent(_this, rootEl, 'change', target, el, rootEl, oldIndex, _index(dragEl, options.draggable), evt);
|
}
|
|
|
if (evt.preventDefault !== void 0) {
|
evt.cancelable && evt.preventDefault();
|
}
|
|
|
moved = true;
|
|
target = _closest(target, options.draggable, el, true);
|
|
// target is dragEl or target is animated
|
if (!!_closest(evt.target, null, dragEl, true) || target.animated) {
|
return completed(false);
|
}
|
|
if (target !== dragEl) {
|
ignoreNextClick = false;
|
}
|
|
if (activeSortable && !options.disabled &&
|
(isOwner
|
? canSort || (revert = !rootEl.contains(dragEl)) // Reverting item into the original list
|
: (
|
putSortable === this ||
|
(
|
(this.lastPutMode = activeGroup.checkPull(this, activeSortable, dragEl, evt)) &&
|
group.checkPut(this, activeSortable, dragEl, evt)
|
)
|
)
|
)
|
) {
|
var axis = this._getDirection(evt, target);
|
|
dragRect = _getRect(dragEl);
|
|
if (revert) {
|
this._hideClone();
|
parentEl = rootEl; // actualization
|
|
if (nextEl) {
|
rootEl.insertBefore(dragEl, nextEl);
|
} else {
|
rootEl.appendChild(dragEl);
|
}
|
|
return completed(true);
|
}
|
|
var elLastChild = _lastChild(el);
|
|
if (!elLastChild || _ghostIsLast(evt, axis, el) && !elLastChild.animated) {
|
// assign target only if condition is true
|
if (elLastChild && el === evt.target) {
|
target = elLastChild;
|
}
|
|
if (target) {
|
targetRect = _getRect(target);
|
}
|
|
if (isOwner) {
|
activeSortable._hideClone();
|
} else {
|
activeSortable._showClone(this);
|
}
|
|
if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, !!target) !== false) {
|
el.appendChild(dragEl);
|
parentEl = el; // actualization
|
realDragElRect = null;
|
|
changed();
|
return completed(true);
|
}
|
}
|
else if (target && target !== dragEl && target.parentNode === el) {
|
var direction = 0,
|
targetBeforeFirstSwap,
|
aligned = target.sortableMouseAligned,
|
differentLevel = dragEl.parentNode !== el,
|
side1 = axis === 'vertical' ? 'top' : 'left',
|
scrolledPastTop = _isScrolledPast(target, 'top') || _isScrolledPast(dragEl, 'top'),
|
scrollBefore = scrolledPastTop ? scrolledPastTop.scrollTop : void 0;
|
|
|
if (lastTarget !== target) {
|
lastMode = null;
|
targetBeforeFirstSwap = _getRect(target)[side1];
|
pastFirstInvertThresh = false;
|
}
|
|
// Reference: https://www.lucidchart.com/documents/view/10fa0e93-e362-4126-aca2-b709ee56bd8b/0
|
if (
|
_isElInRowColumn(dragEl, target, axis) && aligned ||
|
differentLevel ||
|
scrolledPastTop ||
|
options.invertSwap ||
|
lastMode === 'insert' ||
|
// Needed, in the case that we are inside target and inserted because not aligned... aligned will stay false while inside
|
// and lastMode will change to 'insert', but we must swap
|
lastMode === 'swap'
|
) {
|
// New target that we will be inside
|
if (lastMode !== 'swap') {
|
isCircumstantialInvert = options.invertSwap || differentLevel;
|
}
|
|
direction = _getSwapDirection(evt, target, axis,
|
options.swapThreshold, options.invertedSwapThreshold == null ? options.swapThreshold : options.invertedSwapThreshold,
|
isCircumstantialInvert,
|
lastTarget === target);
|
lastMode = 'swap';
|
} else {
|
// Insert at position
|
direction = _getInsertDirection(target);
|
lastMode = 'insert';
|
}
|
if (direction === 0) return completed(false);
|
|
realDragElRect = null;
|
lastTarget = target;
|
|
lastDirection = direction;
|
|
targetRect = _getRect(target);
|
|
var nextSibling = target.nextElementSibling,
|
after = false;
|
|
after = direction === 1;
|
|
var moveVector = _onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, after);
|
|
if (moveVector !== false) {
|
if (moveVector === 1 || moveVector === -1) {
|
after = (moveVector === 1);
|
}
|
|
_silent = true;
|
setTimeout(_unsilent, 30);
|
|
if (isOwner) {
|
activeSortable._hideClone();
|
} else {
|
activeSortable._showClone(this);
|
}
|
|
if (after && !nextSibling) {
|
el.appendChild(dragEl);
|
} else {
|
target.parentNode.insertBefore(dragEl, after ? nextSibling : target);
|
}
|
|
// Undo chrome's scroll adjustment
|
if (scrolledPastTop) {
|
_scrollBy(scrolledPastTop, 0, scrollBefore - scrolledPastTop.scrollTop);
|
}
|
|
parentEl = dragEl.parentNode; // actualization
|
|
// must be done before animation
|
if (targetBeforeFirstSwap !== undefined && !isCircumstantialInvert) {
|
targetMoveDistance = abs(targetBeforeFirstSwap - _getRect(target)[side1]);
|
}
|
changed();
|
|
return completed(true);
|
}
|
}
|
|
if (el.contains(dragEl)) {
|
return completed(false);
|
}
|
}
|
|
if (IE11OrLess && !evt.rootEl) {
|
_artificalBubble(el, evt, '_onDragOver');
|
}
|
|
return false;
|
},
|
|
_animate: function (prevRect, target) {
|
var ms = this.options.animation;
|
|
if (ms) {
|
var currentRect = _getRect(target);
|
|
if (target === dragEl) {
|
realDragElRect = currentRect;
|
}
|
|
if (prevRect.nodeType === 1) {
|
prevRect = _getRect(prevRect);
|
}
|
|
// Check if actually moving position
|
if ((prevRect.left + prevRect.width / 2) !== (currentRect.left + currentRect.width / 2)
|
|| (prevRect.top + prevRect.height / 2) !== (currentRect.top + currentRect.height / 2)
|
) {
|
var matrix = _matrix(this.el),
|
scaleX = matrix && matrix.a,
|
scaleY = matrix && matrix.d;
|
|
_css(target, 'transition', 'none');
|
_css(target, 'transform', 'translate3d('
|
+ (prevRect.left - currentRect.left) / (scaleX ? scaleX : 1) + 'px,'
|
+ (prevRect.top - currentRect.top) / (scaleY ? scaleY : 1) + 'px,0)'
|
);
|
|
forRepaintDummy = target.offsetWidth; // repaint
|
_css(target, 'transition', 'transform ' + ms + '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;
|
}, ms);
|
}
|
},
|
|
_offUpEvents: function () {
|
var ownerDocument = this.el.ownerDocument;
|
|
_off(document, 'touchmove', this._onTouchMove);
|
_off(document, 'pointermove', this._onTouchMove);
|
_off(ownerDocument, 'mouseup', this._onDrop);
|
_off(ownerDocument, 'touchend', this._onDrop);
|
_off(ownerDocument, 'pointerup', this._onDrop);
|
_off(ownerDocument, 'touchcancel', this._onDrop);
|
_off(document, 'selectstart', this);
|
},
|
|
_onDrop: function (/**Event*/evt) {
|
var el = this.el,
|
options = this.options;
|
awaitingDragStarted = false;
|
scrolling = false;
|
isCircumstantialInvert = false;
|
pastFirstInvertThresh = false;
|
|
clearInterval(this._loopId);
|
|
clearInterval(pointerElemChangedInterval);
|
_clearAutoScrolls();
|
_cancelThrottle();
|
|
clearTimeout(this._dragStartTimer);
|
|
_cancelNextTick(this._cloneId);
|
_cancelNextTick(this._dragStartId);
|
|
// Unbind events
|
_off(document, 'mousemove', this._onTouchMove);
|
|
|
if (this.nativeDraggable) {
|
_off(document, 'drop', this);
|
_off(el, 'dragstart', this._onDragStart);
|
_off(document, 'dragover', this._handleAutoScroll);
|
_off(document, 'dragover', _checkAlignment);
|
}
|
|
if (Safari) {
|
_css(document.body, 'user-select', '');
|
}
|
|
this._offUpEvents();
|
|
if (evt) {
|
if (moved) {
|
evt.cancelable && evt.preventDefault();
|
!options.dropBubble && evt.stopPropagation();
|
}
|
|
ghostEl && ghostEl.parentNode && ghostEl.parentNode.removeChild(ghostEl);
|
|
if (rootEl === parentEl || (putSortable && putSortable.lastPutMode !== 'clone')) {
|
// Remove clone
|
cloneEl && cloneEl.parentNode && cloneEl.parentNode.removeChild(cloneEl);
|
}
|
|
if (dragEl) {
|
if (this.nativeDraggable) {
|
_off(dragEl, 'dragend', this);
|
}
|
|
_disableDraggable(dragEl);
|
dragEl.style['will-change'] = '';
|
|
// Remove class's
|
_toggleClass(dragEl, putSortable ? putSortable.options.ghostClass : this.options.ghostClass, false);
|
_toggleClass(dragEl, this.options.chosenClass, false);
|
|
// Drag stop event
|
_dispatchEvent(this, rootEl, 'unchoose', dragEl, parentEl, rootEl, oldIndex, null, evt);
|
|
if (rootEl !== parentEl) {
|
newIndex = _index(dragEl, options.draggable);
|
|
if (newIndex >= 0) {
|
// Add event
|
_dispatchEvent(null, parentEl, 'add', dragEl, parentEl, rootEl, oldIndex, newIndex, evt);
|
|
// Remove event
|
_dispatchEvent(this, rootEl, 'remove', dragEl, parentEl, rootEl, oldIndex, newIndex, evt);
|
|
// drag from one list and drop into another
|
_dispatchEvent(null, parentEl, 'sort', dragEl, parentEl, rootEl, oldIndex, newIndex, evt);
|
_dispatchEvent(this, rootEl, 'sort', dragEl, parentEl, rootEl, oldIndex, newIndex, evt);
|
}
|
|
putSortable && putSortable.save();
|
}
|
else {
|
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, parentEl, rootEl, oldIndex, newIndex, evt);
|
_dispatchEvent(this, rootEl, 'sort', dragEl, parentEl, rootEl, oldIndex, newIndex, evt);
|
}
|
}
|
}
|
|
if (Sortable.active) {
|
/* jshint eqnull:true */
|
if (newIndex == null || newIndex === -1) {
|
newIndex = oldIndex;
|
}
|
_dispatchEvent(this, rootEl, 'end', dragEl, parentEl, rootEl, oldIndex, newIndex, evt);
|
|
// Save sorting
|
this.save();
|
}
|
}
|
|
}
|
this._nulling();
|
},
|
|
_nulling: function() {
|
rootEl =
|
dragEl =
|
parentEl =
|
ghostEl =
|
nextEl =
|
cloneEl =
|
lastDownEl =
|
|
scrollEl =
|
scrollParentEl =
|
autoScrolls.length =
|
|
pointerElemChangedInterval =
|
lastPointerElemX =
|
lastPointerElemY =
|
|
tapEvt =
|
touchEvt =
|
|
moved =
|
newIndex =
|
oldIndex =
|
|
lastTarget =
|
lastDirection =
|
|
forRepaintDummy =
|
realDragElRect =
|
|
putSortable =
|
activeGroup =
|
Sortable.active = null;
|
|
savedInputChecked.forEach(function (el) {
|
el.checked = true;
|
});
|
|
savedInputChecked.length = 0;
|
},
|
|
handleEvent: function (/**Event*/evt) {
|
switch (evt.type) {
|
case 'drop':
|
case 'dragend':
|
this._onDrop(evt);
|
break;
|
|
case 'dragenter':
|
case 'dragover':
|
if (dragEl) {
|
this._onDragOver(evt);
|
_globalDragOver(evt);
|
}
|
break;
|
|
case 'selectstart':
|
evt.preventDefault();
|
break;
|
}
|
},
|
|
|
/**
|
* 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, false)) {
|
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, false)) {
|
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 && 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, false);
|
},
|
|
|
/**
|
* 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);
|
_off(el, 'pointerdown', 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');
|
});
|
|
this._onDrop();
|
|
sortables.splice(sortables.indexOf(this.el), 1);
|
|
this.el = el = null;
|
},
|
|
_hideClone: function() {
|
if (!cloneEl.cloneHidden) {
|
_css(cloneEl, 'display', 'none');
|
cloneEl.cloneHidden = true;
|
if (cloneEl.parentNode && this.options.removeCloneOnHide) {
|
cloneEl.parentNode.removeChild(cloneEl);
|
}
|
}
|
},
|
|
_showClone: function(putSortable) {
|
if (putSortable.lastPutMode !== 'clone') {
|
this._hideClone();
|
return;
|
}
|
|
if (cloneEl.cloneHidden) {
|
// show clone at dragEl or original position
|
if (rootEl.contains(dragEl) && !this.options.group.revertClone) {
|
rootEl.insertBefore(cloneEl, dragEl);
|
} else if (nextEl) {
|
rootEl.insertBefore(cloneEl, nextEl);
|
} else {
|
rootEl.appendChild(cloneEl);
|
}
|
|
if (this.options.group.revertClone) {
|
this._animate(dragEl, cloneEl);
|
}
|
_css(cloneEl, 'display', '');
|
cloneEl.cloneHidden = false;
|
}
|
}
|
};
|
|
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.substring(1)) ||
|
_matches(el, selector)
|
) ||
|
includeCTX && el === ctx
|
) {
|
return el;
|
}
|
|
if (el === ctx) break;
|
/* jshint boss:true */
|
} while (el = _getParentOrHost(el));
|
}
|
|
return null;
|
}
|
|
|
function _getParentOrHost(el) {
|
return (el.host && el !== document && el.host.nodeType)
|
? el.host
|
: el.parentNode;
|
}
|
|
|
function _globalDragOver(/**Event*/evt) {
|
if (evt.dataTransfer) {
|
evt.dataTransfer.dropEffect = 'move';
|
}
|
evt.cancelable && evt.preventDefault();
|
}
|
|
|
function _on(el, event, fn) {
|
el.addEventListener(event, fn, captureMode);
|
}
|
|
|
function _off(el, event, fn) {
|
el.removeEventListener(event, fn, captureMode);
|
}
|
|
|
function _toggleClass(el, name, state) {
|
if (el && name) {
|
if (el.classList) {
|
el.classList[state ? 'add' : 'remove'](name);
|
}
|
else {
|
var className = (' ' + el.className + ' ').replace(R_SPACE, ' ').replace(' ' + name + ' ', ' ');
|
el.className = (className + (state ? ' ' + name : '')).replace(R_SPACE, ' ');
|
}
|
}
|
}
|
|
|
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.indexOf('webkit') === -1) {
|
prop = '-webkit-' + prop;
|
}
|
|
style[prop] = val + (typeof val === 'string' ? '' : 'px');
|
}
|
}
|
}
|
|
function _matrix(el) {
|
var appliedTransforms = '';
|
do {
|
var transform = _css(el, 'transform');
|
|
if (transform && transform !== 'none') {
|
appliedTransforms = transform + ' ' + appliedTransforms;
|
}
|
/* jshint boss:true */
|
} while (el = el.parentNode);
|
|
if (window.DOMMatrix) {
|
return new DOMMatrix(appliedTransforms);
|
} else if (window.WebKitCSSMatrix) {
|
return new WebKitCSSMatrix(appliedTransforms);
|
} else if (window.CSSMatrix) {
|
return new CSSMatrix(appliedTransforms);
|
}
|
}
|
|
|
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, toEl, fromEl, startIndex, newIndex, originalEvt) {
|
sortable = (sortable || rootEl[expando]);
|
var 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 = startIndex;
|
evt.newIndex = newIndex;
|
|
evt.originalEvent = originalEvt;
|
evt.pullMode = putSortable ? putSortable.lastPutMode : undefined;
|
|
if (rootEl) {
|
rootEl.dispatchEvent(evt);
|
}
|
|
if (options[onName]) {
|
options[onName].call(sortable, evt);
|
}
|
}
|
|
|
function _onMove(fromEl, toEl, dragEl, dragRect, targetEl, targetRect, originalEvt, willInsertAfter) {
|
var evt,
|
sortable = fromEl[expando],
|
onMoveFn = sortable.options.onMove,
|
retVal;
|
// Support for new CustomEvent feature
|
if (window.CustomEvent && !IE11OrLess && !Edge) {
|
evt = new CustomEvent('move', {
|
bubbles: true,
|
cancelable: true
|
});
|
} else {
|
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 || _getRect(toEl);
|
evt.willInsertAfter = willInsertAfter;
|
|
evt.originalEvent = originalEvt;
|
|
fromEl.dispatchEvent(evt);
|
|
if (onMoveFn) {
|
retVal = onMoveFn.call(sortable, evt, originalEvt);
|
}
|
|
return retVal;
|
}
|
|
function _disableDraggable(el) {
|
el.draggable = false;
|
}
|
|
function _unsilent() {
|
_silent = 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) {
|
var currentChild = 0,
|
i = 0,
|
children = el.children;
|
|
while (i < children.length) {
|
if (
|
children[i].style.display !== 'none' &&
|
children[i] !== ghostEl &&
|
children[i] !== dragEl &&
|
_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
|
* @return {HTMLElement} The last child, ignoring ghostEl
|
*/
|
function _lastChild(el) {
|
var last = el.lastElementChild;
|
|
while (last && (last === ghostEl || last.style.display === 'none')) {
|
last = last.previousElementSibling;
|
}
|
|
return last || null;
|
}
|
|
function _ghostIsLast(evt, axis, el) {
|
var elRect = _getRect(_lastChild(el)),
|
mouseOnAxis = axis === 'vertical' ? evt.clientY : evt.clientX,
|
mouseOnOppAxis = axis === 'vertical' ? evt.clientX : evt.clientY,
|
targetS2 = axis === 'vertical' ? elRect.bottom : elRect.right,
|
targetS1Opp = axis === 'vertical' ? elRect.left : elRect.top,
|
targetS2Opp = axis === 'vertical' ? elRect.right : elRect.bottom,
|
spacer = 10;
|
|
return (
|
axis === 'vertical' ?
|
(mouseOnOppAxis > targetS2Opp + spacer || mouseOnOppAxis <= targetS2Opp && mouseOnAxis > targetS2 && mouseOnOppAxis >= targetS1Opp) :
|
(mouseOnAxis > targetS2 && mouseOnOppAxis > targetS1Opp || mouseOnAxis <= targetS2 && mouseOnOppAxis > targetS2Opp + spacer)
|
);
|
}
|
|
function _getSwapDirection(evt, target, axis, swapThreshold, invertedSwapThreshold, invertSwap, isLastTarget) {
|
var targetRect = _getRect(target),
|
mouseOnAxis = axis === 'vertical' ? evt.clientY : evt.clientX,
|
targetLength = axis === 'vertical' ? targetRect.height : targetRect.width,
|
targetS1 = axis === 'vertical' ? targetRect.top : targetRect.left,
|
targetS2 = axis === 'vertical' ? targetRect.bottom : targetRect.right,
|
dragRect = _getRect(dragEl),
|
invert = false;
|
|
|
if (!invertSwap) {
|
// Never invert or create dragEl shadow when target movemenet causes mouse to move past the end of regular swapThreshold
|
if (isLastTarget && targetMoveDistance < targetLength * swapThreshold) { // multiplied only by swapThreshold because mouse will already be inside target by (1 - threshold) * targetLength / 2
|
// check if past first invert threshold on side opposite of lastDirection
|
if (!pastFirstInvertThresh &&
|
(lastDirection === 1 ?
|
(
|
mouseOnAxis > targetS1 + targetLength * invertedSwapThreshold / 2
|
) :
|
(
|
mouseOnAxis < targetS2 - targetLength * invertedSwapThreshold / 2
|
)
|
)
|
)
|
{
|
// past first invert threshold, do not restrict inverted threshold to dragEl shadow
|
pastFirstInvertThresh = true;
|
}
|
|
if (!pastFirstInvertThresh) {
|
var dragS1 = axis === 'vertical' ? dragRect.top : dragRect.left,
|
dragS2 = axis === 'vertical' ? dragRect.bottom : dragRect.right;
|
// dragEl shadow (target move distance shadow)
|
if (
|
lastDirection === 1 ?
|
(
|
mouseOnAxis < targetS1 + targetMoveDistance // over dragEl shadow
|
) :
|
(
|
mouseOnAxis > targetS2 - targetMoveDistance
|
)
|
)
|
{
|
return lastDirection * -1;
|
}
|
} else {
|
invert = true;
|
}
|
} else {
|
// Regular
|
if (
|
mouseOnAxis > targetS1 + (targetLength * (1 - swapThreshold) / 2) &&
|
mouseOnAxis < targetS2 - (targetLength * (1 - swapThreshold) / 2)
|
) {
|
return _getInsertDirection(target);
|
}
|
}
|
}
|
|
invert = invert || invertSwap;
|
|
if (invert) {
|
// Invert of regular
|
if (
|
mouseOnAxis < targetS1 + (targetLength * invertedSwapThreshold / 2) ||
|
mouseOnAxis > targetS2 - (targetLength * invertedSwapThreshold / 2)
|
)
|
{
|
return ((mouseOnAxis > targetS1 + targetLength / 2) ? 1 : -1);
|
}
|
}
|
|
return 0;
|
}
|
|
/**
|
* Gets the direction dragEl must be swapped relative to target in order to make it
|
* seem that dragEl has been "inserted" into that element's position
|
* @param {HTMLElement} target The target whose position dragEl is being inserted at
|
* @return {Number} Direction dragEl must be swapped
|
*/
|
function _getInsertDirection(target) {
|
var dragElIndex = _index(dragEl),
|
targetIndex = _index(target);
|
|
if (dragElIndex < targetIndex) {
|
return 1;
|
} else {
|
return -1;
|
}
|
}
|
|
|
/**
|
* 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') && el !== cloneEl) {
|
index++;
|
}
|
}
|
|
return index;
|
}
|
|
function _matches(/**HTMLElement*/el, /**String*/selector) {
|
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;
|
}
|
|
var _throttleTimeout;
|
function _throttle(callback, ms) {
|
return function () {
|
if (!_throttleTimeout) {
|
var args = arguments,
|
_this = this;
|
|
_throttleTimeout = setTimeout(function () {
|
if (args.length === 1) {
|
callback.call(_this, args[0]);
|
} else {
|
callback.apply(_this, args);
|
}
|
|
_throttleTimeout = void 0;
|
}, ms);
|
}
|
};
|
}
|
|
function _cancelThrottle() {
|
clearTimeout(_throttleTimeout);
|
_throttleTimeout = void 0;
|
}
|
|
function _extend(dst, src) {
|
if (dst && src) {
|
for (var key in src) {
|
if (src.hasOwnProperty(key)) {
|
dst[key] = src[key];
|
}
|
}
|
}
|
|
return dst;
|
}
|
|
function _clone(el) {
|
if (Polymer && Polymer.dom) {
|
return Polymer.dom(el).cloneNode(true);
|
}
|
else if ($) {
|
return $(el).clone(true)[0];
|
}
|
else {
|
return el.cloneNode(true);
|
}
|
}
|
|
function _saveInputCheckedState(root) {
|
savedInputChecked.length = 0;
|
|
var inputs = root.getElementsByTagName('input');
|
var idx = inputs.length;
|
|
while (idx--) {
|
var el = inputs[idx];
|
el.checked && savedInputChecked.push(el);
|
}
|
}
|
|
function _nextTick(fn) {
|
return setTimeout(fn, 0);
|
}
|
|
function _cancelNextTick(id) {
|
return clearTimeout(id);
|
}
|
|
|
/**
|
* Returns the "bounding client rect" of given element
|
* @param {HTMLElement} el The element whose boundingClientRect is wanted
|
* @param {[HTMLElement]} container the parent the element will be placed in
|
* @param {[Boolean]} adjustForTransform Whether the rect should compensate for parent's transform
|
* @return {Object} The boundingClientRect of el
|
*/
|
function _getRect(el, adjustForTransform, container, adjustForFixed) {
|
if (!el.getBoundingClientRect && el !== win) return;
|
|
var elRect,
|
top,
|
left,
|
bottom,
|
right,
|
height,
|
width;
|
|
if (el !== win && 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 (adjustForFixed && el !== win) {
|
// 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') {
|
var 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 (adjustForTransform && el !== win) {
|
// Adjust for scale()
|
var matrix = _matrix(container || el),
|
scaleX = matrix && matrix.a,
|
scaleY = matrix && matrix.d;
|
|
if (matrix) {
|
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 it's parents
|
* @param {HTMLElement} el The element who's side being scrolled out of view is in question
|
* @param {String} side Side of the element 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, side) {
|
var parent = _getParentAutoScrollElement(el, true),
|
elSide = _getRect(el)[side];
|
|
/* jshint boss:true */
|
while (parent) {
|
var parentSide = _getRect(parent)[side],
|
visible;
|
|
if (side === 'top' || side === 'left') {
|
visible = elSide >= parentSide;
|
} else {
|
visible = elSide <= parentSide;
|
}
|
|
if (!visible) return parent;
|
|
if (parent === _getWindowScrollingElement()) break;
|
|
parent = _getParentAutoScrollElement(parent, false);
|
}
|
|
return false;
|
}
|
|
/**
|
* 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) {
|
var offsetLeft = 0,
|
offsetTop = 0,
|
winScroller = _getWindowScrollingElement();
|
|
if (el) {
|
do {
|
var matrix = _matrix(el),
|
scaleX = matrix.a,
|
scaleY = matrix.d;
|
|
offsetLeft += el.scrollLeft * scaleX;
|
offsetTop += el.scrollTop * scaleY;
|
} while (el !== winScroller && (el = el.parentNode));
|
}
|
|
return [offsetLeft, offsetTop];
|
}
|
|
// Fixed #973:
|
_on(document, 'touchmove', function(evt) {
|
if ((Sortable.active || awaitingDragStarted) && evt.cancelable) {
|
evt.preventDefault();
|
}
|
});
|
|
|
// Export utils
|
Sortable.utils = {
|
on: _on,
|
off: _off,
|
css: _css,
|
find: _find,
|
is: function (el, selector) {
|
return !!_closest(el, selector, el, false);
|
},
|
extend: _extend,
|
throttle: _throttle,
|
closest: _closest,
|
toggleClass: _toggleClass,
|
clone: _clone,
|
index: _index,
|
nextTick: _nextTick,
|
cancelNextTick: _cancelNextTick,
|
detectDirection: _detectDirection,
|
getChild: _getChild
|
};
|
|
|
/**
|
* Create sortable instance
|
* @param {HTMLElement} el
|
* @param {Object} [options]
|
*/
|
Sortable.create = function (el, options) {
|
return new Sortable(el, options);
|
};
|
|
|
// Export
|
Sortable.version = '1.8.4';
|
return Sortable;
|
});
|
