1285 lines
30 KiB
JavaScript
1285 lines
30 KiB
JavaScript
/**!
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* Sortable
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* @author RubaXa <trash@rubaxa.org>
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* @license MIT
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*/
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(function (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 if (typeof Package !== "undefined") {
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Sortable = factory(); // export for Meteor.js
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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 () {
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"use strict";
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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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scrollEl,
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scrollParentEl,
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lastEl,
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lastCSS,
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lastParentCSS,
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oldIndex,
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newIndex,
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activeGroup,
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autoScroll = {},
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tapEvt,
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touchEvt,
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moved,
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/** @const */
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RSPACE = /\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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supportDraggable = !!('draggable' in document.createElement('div')),
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supportCssPointerEvents = (function (el) {
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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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abs = Math.abs,
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min = Math.min,
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slice = [].slice,
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touchDragOverListeners = [],
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_autoScroll = _throttle(function (/**Event*/evt, /**Object*/options, /**HTMLElement*/rootEl) {
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// Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=505521
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if (rootEl && options.scroll) {
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var el,
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rect,
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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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winWidth = window.innerWidth,
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winHeight = window.innerHeight,
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vx,
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vy
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;
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// Delect scrollEl
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if (scrollParentEl !== rootEl) {
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scrollEl = options.scroll;
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scrollParentEl = rootEl;
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if (scrollEl === true) {
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scrollEl = rootEl;
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do {
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if ((scrollEl.offsetWidth < scrollEl.scrollWidth) ||
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(scrollEl.offsetHeight < scrollEl.scrollHeight)
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) {
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break;
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}
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/* jshint boss:true */
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} while (scrollEl = scrollEl.parentNode);
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}
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}
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if (scrollEl) {
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el = scrollEl;
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rect = scrollEl.getBoundingClientRect();
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vx = (abs(rect.right - x) <= sens) - (abs(rect.left - x) <= sens);
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vy = (abs(rect.bottom - y) <= sens) - (abs(rect.top - y) <= sens);
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}
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if (!(vx || vy)) {
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vx = (winWidth - x <= sens) - (x <= sens);
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vy = (winHeight - y <= sens) - (y <= sens);
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/* jshint expr:true */
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(vx || vy) && (el = win);
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}
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if (autoScroll.vx !== vx || autoScroll.vy !== vy || autoScroll.el !== el) {
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autoScroll.el = el;
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autoScroll.vx = vx;
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autoScroll.vy = vy;
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clearInterval(autoScroll.pid);
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if (el) {
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autoScroll.pid = setInterval(function () {
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if (el === win) {
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win.scrollTo(win.pageXOffset + vx * speed, win.pageYOffset + vy * speed);
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} else {
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vy && (el.scrollTop += vy * speed);
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vx && (el.scrollLeft += vx * speed);
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}
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}, 24);
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}
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}
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}
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}, 30),
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_prepareGroup = function (options) {
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var group = options.group;
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if (!group || typeof group != 'object') {
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group = options.group = {name: group};
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}
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['pull', 'put'].forEach(function (key) {
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if (!(key in group)) {
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group[key] = true;
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}
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});
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options.groups = ' ' + group.name + (group.put.join ? ' ' + group.put.join(' ') : '') + ' ';
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}
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;
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/**
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* @class Sortable
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* @param {HTMLElement} el
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* @param {Object} [options]
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*/
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function Sortable(el, options) {
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if (!(el && el.nodeType && el.nodeType === 1)) {
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throw 'Sortable: `el` must be HTMLElement, and not ' + {}.toString.call(el);
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}
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this.el = el; // root element
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this.options = options = _extend({}, options);
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// Export instance
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el[expando] = this;
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// Default options
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var defaults = {
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group: Math.random(),
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sort: true,
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disabled: false,
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store: null,
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handle: null,
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scroll: true,
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scrollSensitivity: 30,
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scrollSpeed: 10,
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draggable: /[uo]l/i.test(el.nodeName) ? 'li' : '>*',
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ghostClass: 'sortable-ghost',
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chosenClass: 'sortable-chosen',
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ignore: 'a, img',
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filter: null,
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animation: 0,
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setData: function (dataTransfer, dragEl) {
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dataTransfer.setData('Text', dragEl.textContent);
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},
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dropBubble: false,
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dragoverBubble: false,
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dataIdAttr: 'data-id',
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delay: 0,
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forceFallback: false,
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fallbackClass: 'sortable-fallback',
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fallbackOnBody: false,
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fallbackTolerance: 0
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};
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// Set default options
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for (var name in defaults) {
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!(name in options) && (options[name] = defaults[name]);
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}
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_prepareGroup(options);
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// Bind all private methods
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for (var fn in this) {
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if (fn.charAt(0) === '_') {
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this[fn] = this[fn].bind(this);
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}
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}
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// Setup drag mode
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this.nativeDraggable = options.forceFallback ? false : supportDraggable;
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// Bind events
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_on(el, 'mousedown', this._onTapStart);
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_on(el, 'touchstart', this._onTapStart);
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if (this.nativeDraggable) {
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_on(el, 'dragover', this);
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_on(el, 'dragenter', this);
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}
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touchDragOverListeners.push(this._onDragOver);
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// Restore sorting
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options.store && this.sort(options.store.get(this));
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}
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Sortable.prototype = /** @lends Sortable.prototype */ {
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constructor: Sortable,
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_onTapStart: function (/** Event|TouchEvent */evt) {
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var _this = this,
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el = this.el,
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options = this.options,
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type = evt.type,
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touch = evt.touches && evt.touches[0],
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target = (touch || evt).target,
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originalTarget = target,
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filter = options.filter,
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startIndex;
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// Don't trigger start event when an element is been dragged, otherwise the evt.oldindex always wrong when set option.group.
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if (dragEl) {
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return;
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}
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if (type === 'mousedown' && evt.button !== 0 || options.disabled) {
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return; // only left button or enabled
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}
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target = _closest(target, options.draggable, el);
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if (!target) {
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return;
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}
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if (options.handle && !_closest(originalTarget, options.handle, el)) {
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return;
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}
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// Get the index of the dragged element within its parent
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startIndex = _index(target, options.draggable);
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// Check filter
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if (typeof filter === 'function') {
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if (filter.call(this, evt, target, this)) {
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_dispatchEvent(_this, originalTarget, 'filter', target, el, startIndex);
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evt.preventDefault();
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return; // cancel dnd
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}
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}
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else if (filter) {
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filter = filter.split(',').some(function (criteria) {
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criteria = _closest(originalTarget, criteria.trim(), el);
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if (criteria) {
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_dispatchEvent(_this, criteria, 'filter', target, el, startIndex);
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return true;
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}
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});
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if (filter) {
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evt.preventDefault();
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return; // cancel dnd
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}
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}
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// Prepare `dragstart`
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this._prepareDragStart(evt, touch, target, startIndex);
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},
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_prepareDragStart: function (/** Event */evt, /** Touch */touch, /** HTMLElement */target, /** Number */startIndex) {
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var _this = this,
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el = _this.el,
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options = _this.options,
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ownerDocument = el.ownerDocument,
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dragStartFn;
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if (target && !dragEl && (target.parentNode === el)) {
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tapEvt = evt;
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rootEl = el;
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dragEl = target;
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parentEl = dragEl.parentNode;
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nextEl = dragEl.nextSibling;
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activeGroup = options.group;
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oldIndex = startIndex;
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this._lastX = (touch || evt).clientX;
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this._lastY = (touch || evt).clientY;
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dragStartFn = function () {
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// Delayed drag has been triggered
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// we can re-enable the events: touchmove/mousemove
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_this._disableDelayedDrag();
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// Make the element draggable
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dragEl.draggable = true;
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// Chosen item
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_toggleClass(dragEl, _this.options.chosenClass, true);
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// Bind the events: dragstart/dragend
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_this._triggerDragStart(touch);
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// Drag start event
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_dispatchEvent(_this, rootEl, 'choose', dragEl, rootEl, oldIndex);
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};
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// Disable "draggable"
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options.ignore.split(',').forEach(function (criteria) {
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_find(dragEl, criteria.trim(), _disableDraggable);
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});
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_on(ownerDocument, 'mouseup', _this._onDrop);
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_on(ownerDocument, 'touchend', _this._onDrop);
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_on(ownerDocument, 'touchcancel', _this._onDrop);
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if (options.delay) {
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// If the user moves the pointer or let go the click or touch
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// before the delay has been reached:
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// disable the delayed drag
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_on(ownerDocument, 'mouseup', _this._disableDelayedDrag);
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_on(ownerDocument, 'touchend', _this._disableDelayedDrag);
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_on(ownerDocument, 'touchcancel', _this._disableDelayedDrag);
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_on(ownerDocument, 'mousemove', _this._disableDelayedDrag);
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_on(ownerDocument, 'touchmove', _this._disableDelayedDrag);
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_this._dragStartTimer = setTimeout(dragStartFn, options.delay);
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} else {
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dragStartFn();
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}
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}
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},
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_disableDelayedDrag: function () {
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var ownerDocument = this.el.ownerDocument;
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clearTimeout(this._dragStartTimer);
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_off(ownerDocument, 'mouseup', this._disableDelayedDrag);
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_off(ownerDocument, 'touchend', this._disableDelayedDrag);
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_off(ownerDocument, 'touchcancel', this._disableDelayedDrag);
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_off(ownerDocument, 'mousemove', this._disableDelayedDrag);
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_off(ownerDocument, 'touchmove', this._disableDelayedDrag);
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},
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_triggerDragStart: function (/** Touch */touch) {
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if (touch) {
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// Touch device support
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tapEvt = {
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target: dragEl,
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clientX: touch.clientX,
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clientY: touch.clientY
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};
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this._onDragStart(tapEvt, 'touch');
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}
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else if (!this.nativeDraggable) {
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this._onDragStart(tapEvt, true);
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}
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else {
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_on(dragEl, 'dragend', this);
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_on(rootEl, 'dragstart', this._onDragStart);
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}
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try {
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if (document.selection) {
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document.selection.empty();
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} else {
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window.getSelection().removeAllRanges();
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}
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} catch (err) {
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}
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},
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_dragStarted: function () {
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if (rootEl && dragEl) {
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// Apply effect
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_toggleClass(dragEl, this.options.ghostClass, true);
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Sortable.active = this;
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// Drag start event
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_dispatchEvent(this, rootEl, 'start', dragEl, rootEl, oldIndex);
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}
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},
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_emulateDragOver: function () {
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if (touchEvt) {
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if (this._lastX === touchEvt.clientX && this._lastY === touchEvt.clientY) {
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return;
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}
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this._lastX = touchEvt.clientX;
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this._lastY = touchEvt.clientY;
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if (!supportCssPointerEvents) {
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_css(ghostEl, 'display', 'none');
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}
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var target = document.elementFromPoint(touchEvt.clientX, touchEvt.clientY),
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parent = target,
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groupName = ' ' + this.options.group.name + '',
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i = touchDragOverListeners.length;
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if (parent) {
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do {
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if (parent[expando] && parent[expando].options.groups.indexOf(groupName) > -1) {
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while (i--) {
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touchDragOverListeners[i]({
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clientX: touchEvt.clientX,
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clientY: touchEvt.clientY,
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target: target,
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rootEl: parent
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});
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}
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break;
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}
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target = parent; // store last element
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}
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/* jshint boss:true */
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while (parent = parent.parentNode);
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}
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if (!supportCssPointerEvents) {
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_css(ghostEl, 'display', '');
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}
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}
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},
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_onTouchMove: function (/**TouchEvent*/evt) {
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if (tapEvt) {
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var options = this.options,
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fallbackTolerance = options.fallbackTolerance,
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touch = evt.touches ? evt.touches[0] : evt,
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dx = touch.clientX - tapEvt.clientX,
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dy = touch.clientY - tapEvt.clientY,
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translate3d = evt.touches ? 'translate3d(' + dx + 'px,' + dy + 'px,0)' : 'translate(' + dx + 'px,' + dy + 'px)';
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// only set the status to dragging, when we are actually dragging
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if (!Sortable.active) {
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if (fallbackTolerance &&
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min(abs(touch.clientX - this._lastX), abs(touch.clientY - this._lastY)) < fallbackTolerance
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) {
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return;
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}
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this._dragStarted();
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}
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// as well as creating the ghost element on the document body
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this._appendGhost();
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moved = true;
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touchEvt = touch;
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_css(ghostEl, 'webkitTransform', translate3d);
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_css(ghostEl, 'mozTransform', translate3d);
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_css(ghostEl, 'msTransform', translate3d);
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_css(ghostEl, 'transform', translate3d);
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evt.preventDefault();
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}
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},
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_appendGhost: function () {
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if (!ghostEl) {
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var rect = dragEl.getBoundingClientRect(),
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css = _css(dragEl),
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options = this.options,
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ghostRect;
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ghostEl = dragEl.cloneNode(true);
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_toggleClass(ghostEl, options.ghostClass, false);
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_toggleClass(ghostEl, options.fallbackClass, true);
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_css(ghostEl, 'top', rect.top - parseInt(css.marginTop, 10));
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_css(ghostEl, 'left', rect.left - parseInt(css.marginLeft, 10));
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_css(ghostEl, 'width', rect.width);
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_css(ghostEl, 'height', rect.height);
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_css(ghostEl, 'opacity', '0.8');
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_css(ghostEl, 'position', 'fixed');
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_css(ghostEl, 'zIndex', '100000');
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_css(ghostEl, 'pointerEvents', 'none');
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options.fallbackOnBody && document.body.appendChild(ghostEl) || rootEl.appendChild(ghostEl);
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// Fixing dimensions.
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ghostRect = ghostEl.getBoundingClientRect();
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_css(ghostEl, 'width', rect.width * 2 - ghostRect.width);
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_css(ghostEl, 'height', rect.height * 2 - ghostRect.height);
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}
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},
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_onDragStart: function (/**Event*/evt, /**boolean*/useFallback) {
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var dataTransfer = evt.dataTransfer,
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options = this.options;
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this._offUpEvents();
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if (activeGroup.pull == 'clone') {
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cloneEl = dragEl.cloneNode(true);
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_css(cloneEl, 'display', 'none');
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rootEl.insertBefore(cloneEl, dragEl);
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_dispatchEvent(this, rootEl, 'clone', dragEl);
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}
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if (useFallback) {
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if (useFallback === 'touch') {
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// Bind touch events
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_on(document, 'touchmove', this._onTouchMove);
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_on(document, 'touchend', this._onDrop);
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_on(document, 'touchcancel', this._onDrop);
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} else {
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// Old brwoser
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_on(document, 'mousemove', this._onTouchMove);
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_on(document, 'mouseup', this._onDrop);
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}
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this._loopId = setInterval(this._emulateDragOver, 50);
|
|
}
|
|
else {
|
|
if (dataTransfer) {
|
|
dataTransfer.effectAllowed = 'move';
|
|
options.setData && options.setData.call(this, dataTransfer, dragEl);
|
|
}
|
|
|
|
_on(document, 'drop', this);
|
|
setTimeout(this._dragStarted, 0);
|
|
}
|
|
},
|
|
|
|
_onDragOver: function (/**Event*/evt) {
|
|
var el = this.el,
|
|
target,
|
|
dragRect,
|
|
revert,
|
|
options = this.options,
|
|
group = options.group,
|
|
groupPut = group.put,
|
|
isOwner = (activeGroup === group),
|
|
canSort = options.sort;
|
|
|
|
if (evt.preventDefault !== void 0) {
|
|
evt.preventDefault();
|
|
!options.dragoverBubble && evt.stopPropagation();
|
|
}
|
|
|
|
moved = true;
|
|
|
|
if (activeGroup && !options.disabled &&
|
|
(isOwner
|
|
? canSort || (revert = !rootEl.contains(dragEl)) // Reverting item into the original list
|
|
: activeGroup.pull && groupPut && (
|
|
(activeGroup.name === group.name) || // by Name
|
|
(groupPut.indexOf && ~groupPut.indexOf(activeGroup.name)) // by Array
|
|
)
|
|
) &&
|
|
(evt.rootEl === void 0 || evt.rootEl === this.el) // touch fallback
|
|
) {
|
|
// Smart auto-scrolling
|
|
_autoScroll(evt, options, this.el);
|
|
|
|
if (_silent) {
|
|
return;
|
|
}
|
|
|
|
target = _closest(evt.target, options.draggable, el);
|
|
dragRect = dragEl.getBoundingClientRect();
|
|
|
|
if (revert) {
|
|
_cloneHide(true);
|
|
parentEl = rootEl; // actualization
|
|
|
|
if (cloneEl || nextEl) {
|
|
rootEl.insertBefore(dragEl, cloneEl || nextEl);
|
|
}
|
|
else if (!canSort) {
|
|
rootEl.appendChild(dragEl);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
if ((el.children.length === 0) || (el.children[0] === ghostEl) ||
|
|
(el === evt.target) && (target = _ghostIsLast(el, evt))
|
|
) {
|
|
|
|
if (target) {
|
|
if (target.animated) {
|
|
return;
|
|
}
|
|
|
|
targetRect = target.getBoundingClientRect();
|
|
}
|
|
|
|
_cloneHide(isOwner);
|
|
|
|
if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect) !== false) {
|
|
if (!dragEl.contains(el)) {
|
|
el.appendChild(dragEl);
|
|
parentEl = el; // actualization
|
|
}
|
|
|
|
this._animate(dragRect, dragEl);
|
|
target && this._animate(targetRect, target);
|
|
}
|
|
}
|
|
else if (target && !target.animated && target !== dragEl && (target.parentNode[expando] !== void 0)) {
|
|
if (lastEl !== target) {
|
|
lastEl = target;
|
|
lastCSS = _css(target);
|
|
lastParentCSS = _css(target.parentNode);
|
|
}
|
|
|
|
|
|
var targetRect = target.getBoundingClientRect(),
|
|
width = targetRect.right - targetRect.left,
|
|
height = targetRect.bottom - targetRect.top,
|
|
floating = /left|right|inline/.test(lastCSS.cssFloat + lastCSS.display)
|
|
|| (lastParentCSS.display == 'flex' && lastParentCSS['flex-direction'].indexOf('row') === 0),
|
|
isWide = (target.offsetWidth > dragEl.offsetWidth),
|
|
isLong = (target.offsetHeight > dragEl.offsetHeight),
|
|
halfway = (floating ? (evt.clientX - targetRect.left) / width : (evt.clientY - targetRect.top) / height) > 0.5,
|
|
nextSibling = target.nextElementSibling,
|
|
moveVector = _onMove(rootEl, el, dragEl, dragRect, target, targetRect),
|
|
after
|
|
;
|
|
|
|
if (moveVector !== false) {
|
|
_silent = true;
|
|
setTimeout(_unsilent, 30);
|
|
|
|
_cloneHide(isOwner);
|
|
|
|
if (moveVector === 1 || moveVector === -1) {
|
|
after = (moveVector === 1);
|
|
}
|
|
else if (floating) {
|
|
var elTop = dragEl.offsetTop,
|
|
tgTop = target.offsetTop;
|
|
|
|
if (elTop === tgTop) {
|
|
after = (target.previousElementSibling === dragEl) && !isWide || halfway && isWide;
|
|
}
|
|
else if (target.previousElementSibling === dragEl || dragEl.previousElementSibling === target) {
|
|
after = (evt.clientY - targetRect.top) / height > 0.5;
|
|
} else {
|
|
after = tgTop > elTop;
|
|
}
|
|
} else {
|
|
after = (nextSibling !== dragEl) && !isLong || halfway && isLong;
|
|
}
|
|
|
|
if (!dragEl.contains(el)) {
|
|
if (after && !nextSibling) {
|
|
el.appendChild(dragEl);
|
|
} else {
|
|
target.parentNode.insertBefore(dragEl, after ? nextSibling : target);
|
|
}
|
|
}
|
|
|
|
parentEl = dragEl.parentNode; // actualization
|
|
|
|
this._animate(dragRect, dragEl);
|
|
this._animate(targetRect, target);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
_animate: function (prevRect, target) {
|
|
var ms = this.options.animation;
|
|
|
|
if (ms) {
|
|
var currentRect = target.getBoundingClientRect();
|
|
|
|
_css(target, 'transition', 'none');
|
|
_css(target, 'transform', 'translate3d('
|
|
+ (prevRect.left - currentRect.left) + 'px,'
|
|
+ (prevRect.top - currentRect.top) + 'px,0)'
|
|
);
|
|
|
|
target.offsetWidth; // repaint
|
|
|
|
_css(target, 'transition', 'all ' + ms + 'ms');
|
|
_css(target, 'transform', 'translate3d(0,0,0)');
|
|
|
|
clearTimeout(target.animated);
|
|
target.animated = setTimeout(function () {
|
|
_css(target, 'transition', '');
|
|
_css(target, 'transform', '');
|
|
target.animated = false;
|
|
}, ms);
|
|
}
|
|
},
|
|
|
|
_offUpEvents: function () {
|
|
var ownerDocument = this.el.ownerDocument;
|
|
|
|
_off(document, 'touchmove', this._onTouchMove);
|
|
_off(ownerDocument, 'mouseup', this._onDrop);
|
|
_off(ownerDocument, 'touchend', this._onDrop);
|
|
_off(ownerDocument, 'touchcancel', this._onDrop);
|
|
},
|
|
|
|
_onDrop: function (/**Event*/evt) {
|
|
var el = this.el,
|
|
options = this.options;
|
|
|
|
clearInterval(this._loopId);
|
|
clearInterval(autoScroll.pid);
|
|
clearTimeout(this._dragStartTimer);
|
|
|
|
// Unbind events
|
|
_off(document, 'mousemove', this._onTouchMove);
|
|
|
|
if (this.nativeDraggable) {
|
|
_off(document, 'drop', this);
|
|
_off(el, 'dragstart', this._onDragStart);
|
|
}
|
|
|
|
this._offUpEvents();
|
|
|
|
if (evt) {
|
|
if (moved) {
|
|
evt.preventDefault();
|
|
!options.dropBubble && evt.stopPropagation();
|
|
}
|
|
|
|
ghostEl && ghostEl.parentNode.removeChild(ghostEl);
|
|
|
|
if (dragEl) {
|
|
if (this.nativeDraggable) {
|
|
_off(dragEl, 'dragend', this);
|
|
}
|
|
|
|
_disableDraggable(dragEl);
|
|
|
|
// Remove class's
|
|
_toggleClass(dragEl, this.options.ghostClass, false);
|
|
_toggleClass(dragEl, this.options.chosenClass, false);
|
|
|
|
if (rootEl !== parentEl) {
|
|
newIndex = _index(dragEl, options.draggable);
|
|
|
|
if (newIndex >= 0) {
|
|
// drag from one list and drop into another
|
|
_dispatchEvent(null, parentEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
|
|
_dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
|
|
|
|
// Add event
|
|
_dispatchEvent(null, parentEl, 'add', dragEl, rootEl, oldIndex, newIndex);
|
|
|
|
// Remove event
|
|
_dispatchEvent(this, rootEl, 'remove', dragEl, rootEl, oldIndex, newIndex);
|
|
}
|
|
}
|
|
else {
|
|
// Remove clone
|
|
cloneEl && cloneEl.parentNode.removeChild(cloneEl);
|
|
|
|
if (dragEl.nextSibling !== nextEl) {
|
|
// Get the index of the dragged element within its parent
|
|
newIndex = _index(dragEl, options.draggable);
|
|
|
|
if (newIndex >= 0) {
|
|
// drag & drop within the same list
|
|
_dispatchEvent(this, rootEl, 'update', dragEl, rootEl, oldIndex, newIndex);
|
|
_dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Sortable.active) {
|
|
if (newIndex === null || newIndex === -1) {
|
|
newIndex = oldIndex;
|
|
}
|
|
|
|
_dispatchEvent(this, rootEl, 'end', dragEl, rootEl, oldIndex, newIndex);
|
|
|
|
// Save sorting
|
|
this.save();
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
this._nulling();
|
|
},
|
|
|
|
_nulling: function () {
|
|
rootEl =
|
|
dragEl =
|
|
parentEl =
|
|
ghostEl =
|
|
nextEl =
|
|
cloneEl =
|
|
|
|
scrollEl =
|
|
scrollParentEl =
|
|
|
|
tapEvt =
|
|
touchEvt =
|
|
|
|
moved =
|
|
newIndex =
|
|
|
|
lastEl =
|
|
lastCSS =
|
|
|
|
activeGroup =
|
|
Sortable.active = null;
|
|
},
|
|
|
|
handleEvent: function (/**Event*/evt) {
|
|
var type = evt.type;
|
|
|
|
if (type === 'dragover' || type === 'dragenter') {
|
|
if (dragEl) {
|
|
this._onDragOver(evt);
|
|
_globalDragOver(evt);
|
|
}
|
|
}
|
|
else if (type === 'drop' || type === 'dragend') {
|
|
this._onDrop(evt);
|
|
}
|
|
},
|
|
|
|
|
|
/**
|
|
* Serializes the item into an array of string.
|
|
* @returns {String[]}
|
|
*/
|
|
toArray: function () {
|
|
var order = [],
|
|
el,
|
|
children = this.el.children,
|
|
i = 0,
|
|
n = children.length,
|
|
options = this.options;
|
|
|
|
for (; i < n; i++) {
|
|
el = children[i];
|
|
if (_closest(el, options.draggable, this.el)) {
|
|
order.push(el.getAttribute(options.dataIdAttr) || _generateId(el));
|
|
}
|
|
}
|
|
|
|
return order;
|
|
},
|
|
|
|
|
|
/**
|
|
* Sorts the elements according to the array.
|
|
* @param {String[]} order order of the items
|
|
*/
|
|
sort: function (order) {
|
|
var items = {}, rootEl = this.el;
|
|
|
|
this.toArray().forEach(function (id, i) {
|
|
var el = rootEl.children[i];
|
|
|
|
if (_closest(el, this.options.draggable, rootEl)) {
|
|
items[id] = el;
|
|
}
|
|
}, this);
|
|
|
|
order.forEach(function (id) {
|
|
if (items[id]) {
|
|
rootEl.removeChild(items[id]);
|
|
rootEl.appendChild(items[id]);
|
|
}
|
|
});
|
|
},
|
|
|
|
|
|
/**
|
|
* Save the current sorting
|
|
*/
|
|
save: function () {
|
|
var store = this.options.store;
|
|
store && store.set(this);
|
|
},
|
|
|
|
|
|
/**
|
|
* For each element in the set, get the first element that matches the selector by testing the element itself and traversing up through its ancestors in the DOM tree.
|
|
* @param {HTMLElement} el
|
|
* @param {String} [selector] default: `options.draggable`
|
|
* @returns {HTMLElement|null}
|
|
*/
|
|
closest: function (el, selector) {
|
|
return _closest(el, selector || this.options.draggable, this.el);
|
|
},
|
|
|
|
|
|
/**
|
|
* Set/get option
|
|
* @param {string} name
|
|
* @param {*} [value]
|
|
* @returns {*}
|
|
*/
|
|
option: function (name, value) {
|
|
var options = this.options;
|
|
|
|
if (value === void 0) {
|
|
return options[name];
|
|
} else {
|
|
options[name] = value;
|
|
|
|
if (name === 'group') {
|
|
_prepareGroup(options);
|
|
}
|
|
}
|
|
},
|
|
|
|
|
|
/**
|
|
* Destroy
|
|
*/
|
|
destroy: function () {
|
|
var el = this.el;
|
|
|
|
el[expando] = null;
|
|
|
|
_off(el, 'mousedown', this._onTapStart);
|
|
_off(el, 'touchstart', this._onTapStart);
|
|
|
|
if (this.nativeDraggable) {
|
|
_off(el, 'dragover', this);
|
|
_off(el, 'dragenter', this);
|
|
}
|
|
|
|
// Remove draggable attributes
|
|
Array.prototype.forEach.call(el.querySelectorAll('[draggable]'), function (el) {
|
|
el.removeAttribute('draggable');
|
|
});
|
|
|
|
touchDragOverListeners.splice(touchDragOverListeners.indexOf(this._onDragOver), 1);
|
|
|
|
this._onDrop();
|
|
|
|
this.el = el = null;
|
|
}
|
|
};
|
|
|
|
|
|
function _cloneHide(state) {
|
|
if (cloneEl && (cloneEl.state !== state)) {
|
|
_css(cloneEl, 'display', state ? 'none' : '');
|
|
!state && cloneEl.state && rootEl.insertBefore(cloneEl, dragEl);
|
|
cloneEl.state = state;
|
|
}
|
|
}
|
|
|
|
|
|
function _closest(/**HTMLElement*/el, /**String*/selector, /**HTMLElement*/ctx) {
|
|
if (el) {
|
|
ctx = ctx || document;
|
|
|
|
do {
|
|
if ((selector === '>*' && el.parentNode === ctx) || _matches(el, selector)) {
|
|
return el;
|
|
}
|
|
}
|
|
while (el !== ctx && (el = el.parentNode));
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
|
|
function _globalDragOver(/**Event*/evt) {
|
|
if (evt.dataTransfer) {
|
|
evt.dataTransfer.dropEffect = 'move';
|
|
}
|
|
evt.preventDefault();
|
|
}
|
|
|
|
|
|
function _on(el, event, fn) {
|
|
el.addEventListener(event, fn, false);
|
|
}
|
|
|
|
|
|
function _off(el, event, fn) {
|
|
el.removeEventListener(event, fn, false);
|
|
}
|
|
|
|
|
|
function _toggleClass(el, name, state) {
|
|
if (el) {
|
|
if (el.classList) {
|
|
el.classList[state ? 'add' : 'remove'](name);
|
|
}
|
|
else {
|
|
var className = (' ' + el.className + ' ').replace(RSPACE, ' ').replace(' ' + name + ' ', ' ');
|
|
el.className = (className + (state ? ' ' + name : '')).replace(RSPACE, ' ');
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
function _css(el, prop, val) {
|
|
var style = el && el.style;
|
|
|
|
if (style) {
|
|
if (val === void 0) {
|
|
if (document.defaultView && document.defaultView.getComputedStyle) {
|
|
val = document.defaultView.getComputedStyle(el, '');
|
|
}
|
|
else if (el.currentStyle) {
|
|
val = el.currentStyle;
|
|
}
|
|
|
|
return prop === void 0 ? val : val[prop];
|
|
}
|
|
else {
|
|
if (!(prop in style)) {
|
|
prop = '-webkit-' + prop;
|
|
}
|
|
|
|
style[prop] = val + (typeof val === 'string' ? '' : 'px');
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
function _find(ctx, tagName, iterator) {
|
|
if (ctx) {
|
|
var list = ctx.getElementsByTagName(tagName), i = 0, n = list.length;
|
|
|
|
if (iterator) {
|
|
for (; i < n; i++) {
|
|
iterator(list[i], i);
|
|
}
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
return [];
|
|
}
|
|
|
|
|
|
|
|
function _dispatchEvent(sortable, rootEl, name, targetEl, fromEl, startIndex, newIndex) {
|
|
var evt = document.createEvent('Event'),
|
|
options = (sortable || rootEl[expando]).options,
|
|
onName = 'on' + name.charAt(0).toUpperCase() + name.substr(1);
|
|
|
|
evt.initEvent(name, true, true);
|
|
|
|
evt.to = rootEl;
|
|
evt.from = fromEl || rootEl;
|
|
evt.item = targetEl || rootEl;
|
|
evt.clone = cloneEl;
|
|
|
|
evt.oldIndex = startIndex;
|
|
evt.newIndex = newIndex;
|
|
|
|
rootEl.dispatchEvent(evt);
|
|
|
|
if (options[onName]) {
|
|
options[onName].call(sortable, evt);
|
|
}
|
|
}
|
|
|
|
|
|
function _onMove(fromEl, toEl, dragEl, dragRect, targetEl, targetRect) {
|
|
var evt,
|
|
sortable = fromEl[expando],
|
|
onMoveFn = sortable.options.onMove,
|
|
retVal;
|
|
|
|
evt = document.createEvent('Event');
|
|
evt.initEvent('move', true, true);
|
|
|
|
evt.to = toEl;
|
|
evt.from = fromEl;
|
|
evt.dragged = dragEl;
|
|
evt.draggedRect = dragRect;
|
|
evt.related = targetEl || toEl;
|
|
evt.relatedRect = targetRect || toEl.getBoundingClientRect();
|
|
|
|
fromEl.dispatchEvent(evt);
|
|
|
|
if (onMoveFn) {
|
|
retVal = onMoveFn.call(sortable, evt);
|
|
}
|
|
|
|
return retVal;
|
|
}
|
|
|
|
|
|
function _disableDraggable(el) {
|
|
el.draggable = false;
|
|
}
|
|
|
|
|
|
function _unsilent() {
|
|
_silent = false;
|
|
}
|
|
|
|
|
|
/** @returns {HTMLElement|false} */
|
|
function _ghostIsLast(el, evt) {
|
|
var lastEl = el.lastElementChild,
|
|
rect = lastEl.getBoundingClientRect();
|
|
|
|
return ((evt.clientY - (rect.top + rect.height) > 5) || (evt.clientX - (rect.right + rect.width) > 5)) && lastEl; // min delta
|
|
}
|
|
|
|
|
|
/**
|
|
* Generate id
|
|
* @param {HTMLElement} el
|
|
* @returns {String}
|
|
* @private
|
|
*/
|
|
function _generateId(el) {
|
|
var str = el.tagName + el.className + el.src + el.href + el.textContent,
|
|
i = str.length,
|
|
sum = 0;
|
|
|
|
while (i--) {
|
|
sum += str.charCodeAt(i);
|
|
}
|
|
|
|
return sum.toString(36);
|
|
}
|
|
|
|
/**
|
|
* Returns the index of an element within its parent for a selected set of
|
|
* elements
|
|
* @param {HTMLElement} el
|
|
* @param {selector} selector
|
|
* @return {number}
|
|
*/
|
|
function _index(el, selector) {
|
|
var index = 0;
|
|
|
|
if (!el || !el.parentNode) {
|
|
return -1;
|
|
}
|
|
|
|
while (el && (el = el.previousElementSibling)) {
|
|
if ((el.nodeName.toUpperCase() !== 'TEMPLATE') && (selector === '>*' || _matches(el, selector))) {
|
|
index++;
|
|
}
|
|
}
|
|
|
|
return index;
|
|
}
|
|
|
|
function _matches(/**HTMLElement*/el, /**String*/selector) {
|
|
if (el) {
|
|
selector = selector.split('.');
|
|
|
|
var tag = selector.shift().toUpperCase(),
|
|
re = new RegExp('\\s(' + selector.join('|') + ')(?=\\s)', 'g');
|
|
|
|
return (
|
|
(tag === '' || el.nodeName.toUpperCase() == tag) &&
|
|
(!selector.length || ((' ' + el.className + ' ').match(re) || []).length == selector.length)
|
|
);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function _throttle(callback, ms) {
|
|
var args, _this;
|
|
|
|
return function () {
|
|
if (args === void 0) {
|
|
args = arguments;
|
|
_this = this;
|
|
|
|
setTimeout(function () {
|
|
if (args.length === 1) {
|
|
callback.call(_this, args[0]);
|
|
} else {
|
|
callback.apply(_this, args);
|
|
}
|
|
|
|
args = void 0;
|
|
}, ms);
|
|
}
|
|
};
|
|
}
|
|
|
|
function _extend(dst, src) {
|
|
if (dst && src) {
|
|
for (var key in src) {
|
|
if (src.hasOwnProperty(key)) {
|
|
dst[key] = src[key];
|
|
}
|
|
}
|
|
}
|
|
|
|
return dst;
|
|
}
|
|
|
|
|
|
// Export utils
|
|
Sortable.utils = {
|
|
on: _on,
|
|
off: _off,
|
|
css: _css,
|
|
find: _find,
|
|
is: function (el, selector) {
|
|
return !!_closest(el, selector, el);
|
|
},
|
|
extend: _extend,
|
|
throttle: _throttle,
|
|
closest: _closest,
|
|
toggleClass: _toggleClass,
|
|
index: _index
|
|
};
|
|
|
|
|
|
/**
|
|
* Create sortable instance
|
|
* @param {HTMLElement} el
|
|
* @param {Object} [options]
|
|
*/
|
|
Sortable.create = function (el, options) {
|
|
return new Sortable(el, options);
|
|
};
|
|
|
|
|
|
// Export
|
|
Sortable.version = '1.4.2';
|
|
return Sortable;
|
|
});
|