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1045 lines
23 KiB
1045 lines
23 KiB
/**! |
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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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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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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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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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_silent = false, |
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_dispatchEvent = function (rootEl, name, targetEl, fromEl, startIndex, newIndex) { |
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var evt = document.createEvent('Event'); |
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evt.initEvent(name, true, true); |
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evt.item = targetEl || rootEl; |
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evt.from = fromEl || rootEl; |
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evt.clone = cloneEl; |
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evt.oldIndex = startIndex; |
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evt.newIndex = newIndex; |
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rootEl.dispatchEvent(evt); |
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}, |
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_customEvents = 'onAdd onUpdate onRemove onStart onEnd onFilter onSort'.split(' '), |
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noop = function () {}, |
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abs = Math.abs, |
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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.scrollX + vx * speed, win.scrollY + 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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; |
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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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this.el = el; // root element |
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this.options = options = (options || {}); |
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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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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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}; |
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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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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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// Define events |
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_customEvents.forEach(function (name) { |
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options[name] = _bind(this, options[name] || noop); |
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_on(el, name.substr(2).toLowerCase(), options[name]); |
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}, this); |
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// Export options |
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options.groups = ' ' + group.name + (group.put.join ? ' ' + group.put.join(' ') : '') + ' '; |
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el[expando] = 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] = _bind(this, this[fn]); |
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} |
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} |
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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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_on(el, 'dragover', this); |
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_on(el, 'dragenter', this); |
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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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_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(rootEl, 'start', dragEl, rootEl, oldIndex); |
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} |
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}, |
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_onTapStart: function (/**Event|TouchEvent*/evt) { |
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var 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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options = this.options, |
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el = this.el, |
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filter = options.filter; |
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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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if (options.handle) { |
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target = _closest(target, options.handle, el); |
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} |
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target = _closest(target, options.draggable, el); |
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// get the index of the dragged element within its parent |
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oldIndex = _index(target); |
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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(originalTarget, 'filter', target, el, oldIndex); |
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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(criteria, 'filter', target, el, oldIndex); |
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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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if (target && !dragEl && (target.parentNode === el)) { |
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tapEvt = evt; |
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rootEl = this.el; |
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dragEl = target; |
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nextEl = dragEl.nextSibling; |
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activeGroup = this.options.group; |
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dragEl.draggable = true; |
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// Disable "draggable" |
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options.ignore.split(',').forEach(function (criteria) { |
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_find(target, criteria.trim(), _disableDraggable); |
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}); |
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if (touch) { |
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// Touch device support |
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tapEvt = { |
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target: target, |
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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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evt.preventDefault(); |
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} |
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_on(document, 'mouseup', this._onDrop); |
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_on(document, 'touchend', this._onDrop); |
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_on(document, 'touchcancel', this._onDrop); |
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_on(dragEl, 'dragend', this); |
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_on(rootEl, 'dragstart', this._onDragStart); |
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if (!supportDraggable) { |
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this._onDragStart(tapEvt, true); |
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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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}, |
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_emulateDragOver: function () { |
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if (touchEvt) { |
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_css(ghostEl, 'display', 'none'); |
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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].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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_css(ghostEl, 'display', ''); |
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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 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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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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_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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} |
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if (useFallback) { |
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var rect = dragEl.getBoundingClientRect(), |
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css = _css(dragEl), |
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ghostRect; |
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ghostEl = dragEl.cloneNode(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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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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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, 150); |
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} |
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else { |
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if (dataTransfer) { |
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dataTransfer.effectAllowed = 'move'; |
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options.setData && options.setData.call(this, dataTransfer, dragEl); |
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} |
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_on(document, 'drop', this); |
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} |
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setTimeout(this._dragStarted, 0); |
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}, |
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_onDragOver: function (/**Event*/evt) { |
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var el = this.el, |
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target, |
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dragRect, |
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revert, |
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options = this.options, |
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group = options.group, |
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groupPut = group.put, |
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isOwner = (activeGroup === group), |
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canSort = options.sort; |
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if (evt.dataTransfer && evt.dataTransfer.effectAllowed !== 'move') { |
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return; |
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} |
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if (evt.preventDefault !== void 0) { |
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evt.preventDefault(); |
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!options.dragoverBubble && evt.stopPropagation(); |
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} |
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if (activeGroup && !options.disabled && |
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(isOwner |
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? canSort || (revert = !rootEl.contains(dragEl)) |
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: activeGroup.pull && groupPut && ( |
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(activeGroup.name === group.name) || // by Name |
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(groupPut.indexOf && ~groupPut.indexOf(activeGroup.name)) // by Array |
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) |
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) && |
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(evt.rootEl === void 0 || evt.rootEl === this.el) |
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) { |
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// Smart auto-scrolling |
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_autoScroll(evt, options, this.el); |
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if (_silent) { |
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return; |
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} |
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target = _closest(evt.target, options.draggable, el); |
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dragRect = dragEl.getBoundingClientRect(); |
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if (revert) { |
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_cloneHide(true); |
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if (cloneEl || nextEl) { |
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rootEl.insertBefore(dragEl, cloneEl || nextEl); |
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} |
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else if (!canSort) { |
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rootEl.appendChild(dragEl); |
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} |
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return; |
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} |
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if ((el.children.length === 0) || (el.children[0] === ghostEl) || |
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(el === evt.target) && (target = _ghostInBottom(el, evt)) |
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) { |
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if (target) { |
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if (target.animated) { |
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return; |
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} |
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targetRect = target.getBoundingClientRect(); |
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} |
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_cloneHide(isOwner); |
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el.appendChild(dragEl); |
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this._animate(dragRect, dragEl); |
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target && this._animate(targetRect, target); |
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} |
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else if (target && !target.animated && target !== dragEl && (target.parentNode[expando] !== void 0)) { |
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if (lastEl !== target) { |
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lastEl = target; |
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lastCSS = _css(target); |
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} |
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var targetRect = target.getBoundingClientRect(), |
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width = targetRect.right - targetRect.left, |
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height = targetRect.bottom - targetRect.top, |
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floating = /left|right|inline/.test(lastCSS.cssFloat + lastCSS.display), |
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isWide = (target.offsetWidth > dragEl.offsetWidth), |
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isLong = (target.offsetHeight > dragEl.offsetHeight), |
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halfway = (floating ? (evt.clientX - targetRect.left) / width : (evt.clientY - targetRect.top) / height) > 0.5, |
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nextSibling = target.nextElementSibling, |
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after |
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; |
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_silent = true; |
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setTimeout(_unsilent, 30); |
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|
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_cloneHide(isOwner); |
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|
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if (floating) { |
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after = (target.previousElementSibling === dragEl) && !isWide || halfway && isWide; |
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} else { |
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after = (nextSibling !== dragEl) && !isLong || halfway && isLong; |
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} |
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if (after && !nextSibling) { |
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el.appendChild(dragEl); |
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} else { |
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target.parentNode.insertBefore(dragEl, after ? nextSibling : target); |
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} |
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this._animate(dragRect, dragEl); |
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this._animate(targetRect, target); |
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} |
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} |
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}, |
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_animate: function (prevRect, target) { |
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var ms = this.options.animation; |
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|
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if (ms) { |
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var currentRect = target.getBoundingClientRect(); |
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|
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_css(target, 'transition', 'none'); |
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_css(target, 'transform', 'translate3d(' |
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+ (prevRect.left - currentRect.left) + 'px,' |
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+ (prevRect.top - currentRect.top) + 'px,0)' |
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); |
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|
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target.offsetWidth; // repaint |
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_css(target, 'transition', 'all ' + ms + 'ms'); |
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_css(target, 'transform', 'translate3d(0,0,0)'); |
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|
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clearTimeout(target.animated); |
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target.animated = setTimeout(function () { |
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_css(target, 'transition', ''); |
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_css(target, 'transform', ''); |
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target.animated = false; |
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}, ms); |
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} |
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}, |
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_offUpEvents: function () { |
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_off(document, 'mouseup', this._onDrop); |
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_off(document, 'touchmove', this._onTouchMove); |
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_off(document, 'touchend', this._onDrop); |
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_off(document, 'touchcancel', this._onDrop); |
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}, |
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_onDrop: function (/**Event*/evt) { |
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var el = this.el, |
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options = this.options; |
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|
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clearInterval(this._loopId); |
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clearInterval(autoScroll.pid); |
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|
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// Unbind events |
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_off(document, 'drop', this); |
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_off(document, 'mousemove', this._onTouchMove); |
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_off(el, 'dragstart', this._onDragStart); |
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|
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this._offUpEvents(); |
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|
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if (evt) { |
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evt.preventDefault(); |
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!options.dropBubble && evt.stopPropagation(); |
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|
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ghostEl && ghostEl.parentNode.removeChild(ghostEl); |
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|
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if (dragEl) { |
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_off(dragEl, 'dragend', this); |
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|
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_disableDraggable(dragEl); |
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_toggleClass(dragEl, this.options.ghostClass, false); |
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|
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if (rootEl !== dragEl.parentNode) { |
|
newIndex = _index(dragEl); |
|
|
|
// drag from one list and drop into another |
|
_dispatchEvent(dragEl.parentNode, 'sort', dragEl, rootEl, oldIndex, newIndex); |
|
_dispatchEvent(rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex); |
|
|
|
// Add event |
|
_dispatchEvent(dragEl, 'add', dragEl, rootEl, oldIndex, newIndex); |
|
|
|
// Remove event |
|
_dispatchEvent(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); |
|
|
|
// drag & drop within the same list |
|
_dispatchEvent(rootEl, 'update', dragEl, rootEl, oldIndex, newIndex); |
|
_dispatchEvent(rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex); |
|
} |
|
} |
|
|
|
// Drag end event |
|
Sortable.active && _dispatchEvent(rootEl, 'end', dragEl, rootEl, oldIndex, newIndex); |
|
} |
|
|
|
// Nulling |
|
rootEl = |
|
dragEl = |
|
ghostEl = |
|
nextEl = |
|
cloneEl = |
|
|
|
scrollEl = |
|
scrollParentEl = |
|
|
|
tapEvt = |
|
touchEvt = |
|
|
|
lastEl = |
|
lastCSS = |
|
|
|
activeGroup = |
|
Sortable.active = null; |
|
|
|
// Save sorting |
|
this.save(); |
|
} |
|
}, |
|
|
|
|
|
handleEvent: function (/**Event*/evt) { |
|
var type = evt.type; |
|
|
|
if (type === 'dragover' || type === 'dragenter') { |
|
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; |
|
|
|
for (; i < n; i++) { |
|
el = children[i]; |
|
if (_closest(el, this.options.draggable, this.el)) { |
|
order.push(el.getAttribute('data-id') || _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; |
|
} |
|
}, |
|
|
|
|
|
/** |
|
* Destroy |
|
*/ |
|
destroy: function () { |
|
var el = this.el, options = this.options; |
|
|
|
_customEvents.forEach(function (name) { |
|
_off(el, name.substr(2).toLowerCase(), options[name]); |
|
}); |
|
|
|
_off(el, 'mousedown', this._onTapStart); |
|
_off(el, 'touchstart', this._onTapStart); |
|
|
|
_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 = 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 _bind(ctx, fn) { |
|
var args = slice.call(arguments, 2); |
|
return fn.bind ? fn.bind.apply(fn, [ctx].concat(args)) : function () { |
|
return fn.apply(ctx, args.concat(slice.call(arguments))); |
|
}; |
|
} |
|
|
|
|
|
function _closest(/**HTMLElement*/el, /**String*/selector, /**HTMLElement*/ctx) { |
|
if (el) { |
|
ctx = ctx || document; |
|
selector = selector.split('.'); |
|
|
|
var tag = selector.shift().toUpperCase(), |
|
re = new RegExp('\\s(' + selector.join('|') + ')\\s', 'g'); |
|
|
|
do { |
|
if ( |
|
(tag === '>*' && el.parentNode === ctx) || ( |
|
(tag === '' || el.nodeName.toUpperCase() == tag) && |
|
(!selector.length || ((' ' + el.className + ' ').match(re) || []).length == selector.length) |
|
) |
|
) { |
|
return el; |
|
} |
|
} |
|
while (el !== ctx && (el = el.parentNode)); |
|
} |
|
|
|
return null; |
|
} |
|
|
|
|
|
function _globalDragOver(/**Event*/evt) { |
|
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(/\s+/g, ' ').replace(' ' + name + ' ', ''); |
|
el.className = className + (state ? ' ' + name : ''); |
|
} |
|
} |
|
} |
|
|
|
|
|
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 _disableDraggable(el) { |
|
el.draggable = false; |
|
} |
|
|
|
|
|
function _unsilent() { |
|
_silent = false; |
|
} |
|
|
|
|
|
/** @returns {HTMLElement|false} */ |
|
function _ghostInBottom(el, evt) { |
|
var lastEl = el.lastElementChild, rect = lastEl.getBoundingClientRect(); |
|
return (evt.clientY - (rect.top + rect.height) > 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 |
|
* @param el |
|
* @returns {number} |
|
* @private |
|
*/ |
|
function _index(/**HTMLElement*/el) { |
|
var index = 0; |
|
while (el && (el = el.previousElementSibling)) { |
|
if (el.nodeName.toUpperCase() !== 'TEMPLATE') { |
|
index++; |
|
} |
|
} |
|
return index; |
|
} |
|
|
|
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); |
|
} |
|
}; |
|
} |
|
|
|
|
|
// Export utils |
|
Sortable.utils = { |
|
on: _on, |
|
off: _off, |
|
css: _css, |
|
find: _find, |
|
bind: _bind, |
|
is: function (el, selector) { |
|
return !!_closest(el, selector, el); |
|
}, |
|
throttle: _throttle, |
|
closest: _closest, |
|
toggleClass: _toggleClass, |
|
dispatchEvent: _dispatchEvent, |
|
index: _index |
|
}; |
|
|
|
|
|
Sortable.version = '1.0.1'; |
|
|
|
|
|
/** |
|
* Create sortable instance |
|
* @param {HTMLElement} el |
|
* @param {Object} [options] |
|
*/ |
|
Sortable.create = function (el, options) { |
|
return new Sortable(el, options); |
|
}; |
|
|
|
// Export |
|
return Sortable; |
|
});
|
|
|