| 1 |
/* @preserve |
| 2 |
_____ __ _ __ _ |
| 3 |
/ ___// /(_)___/ /___ ____ (_)___ |
| 4 |
/ (_ // // // _ // -_)/ __/_ / /(_-< |
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\___//_//_/ \_,_/ \__//_/ (_)__/ //___/ |
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|___/ |
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|
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Version: forked |
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Author: Nick Piscitelli (pickykneee) |
| 10 |
Website: https://nickpiscitelli.com |
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Documentation: http://nickpiscitelli.github.io/Glider.js |
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License: MIT License |
| 13 |
Release Date: October 25th, 2018 |
| 14 |
|
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*/ |
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|
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/* global define */ |
| 18 |
|
| 19 |
(function (factory) { |
| 20 |
typeof define === 'function' && define.amd |
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? define(factory) |
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: typeof exports === 'object' |
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? (module.exports = factory()) |
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: factory() |
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})(function () { |
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('use strict') // eslint-disable-line no-unused-expressions |
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|
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/* globals window:true */ |
| 29 |
var _window = typeof window !== 'undefined' ? window : this |
| 30 |
|
| 31 |
var Glider = (_window.Glider = function (element, settings) { |
| 32 |
var _ = this |
| 33 |
|
| 34 |
if (element._glider) return element._glider |
| 35 |
|
| 36 |
_.ele = element |
| 37 |
_.ele.classList.add('glider') |
| 38 |
|
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// expose glider object to its DOM element |
| 40 |
_.ele._glider = _ |
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|
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// merge user setting with defaults |
| 43 |
_.opt = Object.assign( |
| 44 |
{}, |
| 45 |
{ |
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slidesToScroll: 1, |
| 47 |
slidesToShow: 1, |
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resizeLock: true, |
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labelDots: false, |
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duration: 0.5, |
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dir: (_window.getComputedStyle(_.ele).direction === 'rtl') ? -1:1, |
| 52 |
// easeInQuad |
| 53 |
easing: function (x, t, b, c, d) { |
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return c * (t /= d) * t + b |
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} |
| 56 |
}, |
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settings |
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) |
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if(Math.abs(_.opt.dir) != 1) _.opt.dir = 1; |
| 60 |
|
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// set defaults |
| 62 |
_.animate_id = _.page = _.slide = _.scrollLeft = 0 |
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_.arrows = {} |
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|
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// preserve original options to |
| 66 |
// extend breakpoint settings |
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_._opt = _.opt |
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|
| 69 |
if (_.opt.skipTrack) { |
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// first and only child is the track |
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_.track = _.ele.children[0] |
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} else { |
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// create track and wrap slides |
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_.track = document.createElement('div') |
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_.ele.appendChild(_.track) |
| 76 |
while (_.ele.children.length !== 1) { |
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_.track.appendChild(_.ele.children[0]) |
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} |
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} |
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|
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_.track.classList.add('glider-track') |
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|
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// start glider |
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_.init() |
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|
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// set events |
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_.resize = _.init.bind(_, true) |
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_.event(_.ele, 'add', { |
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scroll: _.updateControls.bind(_) |
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}) |
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_.event(_window, 'add', { |
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resize: _.resize |
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}) |
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}) |
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|
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var gliderPrototype = Glider.prototype |
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gliderPrototype.init = function (refresh, paging) { |
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var _ = this |
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|
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var width = 0 |
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|
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var height = 0 |
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|
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_.slides = _.track.children; |
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|
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|
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[].forEach.call(_.slides, function (_, i) { |
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_.classList.add('glider-slide') |
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_.setAttribute('data-gslide', i) |
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}) |
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|
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_.containerWidth = _.ele.clientWidth |
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|
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var breakpointChanged = _.settingsBreakpoint() |
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if (!paging) paging = breakpointChanged |
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|
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if ( |
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_.opt.slidesToShow === 'auto' || |
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typeof _.opt._autoSlide !== 'undefined' |
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) { |
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var slideCount = _.containerWidth / _.opt.itemWidth |
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|
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_.opt._autoSlide = _.opt.slidesToShow = _.opt.exactWidth |
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? slideCount |
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: Math.floor(slideCount) |
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} |
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if (_.opt.slidesToScroll === 'auto') { |
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_.opt.slidesToScroll = Math.floor(_.opt.slidesToShow) |
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} |
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|
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_.itemWidth = _.opt.exactWidth |
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? _.opt.itemWidth |
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: _.containerWidth / _.opt.slidesToShow; |
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|
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// set slide dimensions |
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[].forEach.call(_.slides, function (__) { |
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__.style.height = 'auto' |
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__.style.width = _.itemWidth + 'px' |
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width += _.itemWidth |
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height = Math.max(__.offsetHeight, height) |
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}) |
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|
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_.track.style.width = width + 'px' |
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_.trackWidth = width |
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_.isDrag = false |
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_.preventClick = false |
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|
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_.opt.resizeLock && _.scrollTo(_.slide * _.itemWidth, 0) |
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|
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if (breakpointChanged || paging) { |
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_.bindArrows() |
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_.buildDots() |
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_.bindDrag() |
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} |
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|
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_.updateControls() |
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|
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_.emit(refresh ? 'refresh' : 'loaded') |
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} |
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|
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gliderPrototype.bindDrag = function () { |
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var _ = this |
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_.mouse = _.mouse || _.handleMouse.bind(_) |
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|
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var mouseup = function () { |
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_.mouseDown = undefined |
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_.ele.classList.remove('drag') |
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if (_.isDrag) { |
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_.preventClick = true |
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} |
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_.isDrag = false |
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} |
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|
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var events = { |
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mouseup: mouseup, |
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mouseleave: mouseup, |
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mousedown: function (e) { |
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e.preventDefault() |
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e.stopPropagation() |
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_.mouseDown = e.clientX |
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_.ele.classList.add('drag') |
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}, |
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mousemove: _.mouse, |
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click: function (e) { |
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if (_.preventClick) { |
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e.preventDefault() |
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e.stopPropagation() |
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} |
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_.preventClick = false |
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} |
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} |
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|
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_.ele.classList.toggle('draggable', _.opt.draggable === true) |
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_.event(_.ele, 'remove', events) |
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if (_.opt.draggable) _.event(_.ele, 'add', events) |
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} |
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|
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gliderPrototype.buildDots = function () { |
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var _ = this |
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|
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if (!_.opt.dots) { |
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if (_.dots) _.dots.innerHTML = '' |
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return |
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} |
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|
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if (typeof _.opt.dots === 'string') { |
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_.dots = document.querySelector(_.opt.dots) |
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} else _.dots = _.opt.dots |
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if (!_.dots) return |
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|
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_.dots.innerHTML = '' |
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_.dots.classList.add('glider-dots') |
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if(false !== _.opt.labelDots) _.dots.classList.add('label-dots') |
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|
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for (var i = 0; i < Math.ceil(_.slides.length / _.opt.slidesToShow); ++i) { |
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var dot = document.createElement('button') |
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dot.dataset.index = i |
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dot.setAttribute('aria-label', 'Page ' + (i + 1)) |
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dot.className = 'glider-dot ' + (i ? '' : 'active') |
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if(false !== _.opt.labelDots){ |
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if(_.opt.labelDots[i]) dot.innerText = _.opt.labelDots[i] |
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else dot.innerText = (i+1) |
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} |
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_.event(dot, 'add', { |
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click: _.scrollItem.bind(_, i, true) |
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}) |
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_.dots.appendChild(dot) |
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} |
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} |
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|
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gliderPrototype.bindArrows = function () { |
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var _ = this |
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if (!_.opt.arrows) { |
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Object.keys(_.arrows).forEach(function (direction) { |
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var element = _.arrows[direction] |
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_.event(element, 'remove', { click: element._func }) |
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}) |
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return |
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} |
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['prev', 'next'].forEach(function (direction) { |
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var arrow = _.opt.arrows[direction] |
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if (arrow) { |
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if (typeof arrow === 'string') arrow = document.querySelector(arrow) |
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if (arrow) { |
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arrow._func = arrow._func || _.scrollItem.bind(_, direction) |
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_.event(arrow, 'remove', { |
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click: arrow._func |
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}) |
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_.event(arrow, 'add', { |
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click: arrow._func |
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}) |
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_.arrows[direction] = arrow |
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} |
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} |
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}) |
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} |
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|
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gliderPrototype.updateControls = function (event) { |
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var _ = this |
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|
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if (event && !_.opt.scrollPropagate) { |
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event.stopPropagation() |
| 263 |
} |
| 264 |
|
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var disableArrows = _.containerWidth >= _.trackWidth |
| 266 |
|
| 267 |
if (!_.opt.rewind) { |
| 268 |
if (_.arrows.prev) { |
| 269 |
_.arrows.prev.classList.toggle( |
| 270 |
'disabled', |
| 271 |
(_.opt.dir * _.ele.scrollLeft) <= 0 || disableArrows |
| 272 |
) |
| 273 |
} |
| 274 |
if (_.arrows.next) { |
| 275 |
_.arrows.next.classList.toggle( |
| 276 |
'disabled', |
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Math.ceil(_.opt.dir * _.ele.scrollLeft + _.containerWidth) >= |
| 278 |
Math.floor(_.trackWidth) || disableArrows |
| 279 |
) |
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} |
| 281 |
} |
| 282 |
|
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_.slide = Math.round(_.opt.dir * _.ele.scrollLeft / _.itemWidth) |
| 284 |
_.page = Math.round(_.opt.dir * _.ele.scrollLeft / _.containerWidth) |
| 285 |
|
| 286 |
var middle = _.slide + Math.floor(Math.floor(_.opt.slidesToShow) / 2) |
| 287 |
|
| 288 |
var extraMiddle = Math.floor(_.opt.slidesToShow) % 2 ? 0 : middle + 1 |
| 289 |
if (Math.floor(_.opt.slidesToShow) === 1) { |
| 290 |
extraMiddle = 0 |
| 291 |
} |
| 292 |
|
| 293 |
// the last page may be less than one half of a normal page width so |
| 294 |
// the page is rounded down. when at the end, force the page to turn |
| 295 |
if ( (_.opt.dir * _.ele.scrollLeft + _.containerWidth) >= Math.floor(_.trackWidth)) { |
| 296 |
_.page = _.dots ? _.dots.children.length - 1 : 0 |
| 297 |
} |
| 298 |
|
| 299 |
[].forEach.call(_.slides, function (slide, index) { |
| 300 |
var slideClasses = slide.classList |
| 301 |
|
| 302 |
var wasVisible = slideClasses.contains('visible') |
| 303 |
|
| 304 |
var start = _.opt.dir * _.ele.scrollLeft |
| 305 |
|
| 306 |
var end = _.opt.dir * _.ele.scrollLeft + _.containerWidth |
| 307 |
|
| 308 |
var itemStart = _.itemWidth * index |
| 309 |
|
| 310 |
var itemEnd = itemStart + _.itemWidth; |
| 311 |
|
| 312 |
[].forEach.call(slideClasses, function (className) { |
| 313 |
/^left|right/.test(className) && slideClasses.remove(className) |
| 314 |
}) |
| 315 |
slideClasses.toggle('active', _.slide === index) |
| 316 |
if (middle === index || (extraMiddle && extraMiddle === index)) { |
| 317 |
slideClasses.add('center') |
| 318 |
} else { |
| 319 |
slideClasses.remove('center') |
| 320 |
slideClasses.add( |
| 321 |
[ |
| 322 |
index < middle ? 'left' : 'right', |
| 323 |
Math.abs(index - (index < middle ? middle : extraMiddle || middle)) |
| 324 |
].join('-') |
| 325 |
) |
| 326 |
} |
| 327 |
|
| 328 |
var isVisible = |
| 329 |
Math.ceil(itemStart) >= start && Math.floor(itemEnd) <= end |
| 330 |
slideClasses.toggle('visible', isVisible) |
| 331 |
if (isVisible !== wasVisible) { |
| 332 |
_.emit('slide-' + (isVisible ? 'visible' : 'hidden'), { |
| 333 |
slide: index |
| 334 |
}) |
| 335 |
} |
| 336 |
}) |
| 337 |
if (_.dots) { |
| 338 |
[].forEach.call(_.dots.children, function (dot, index) { |
| 339 |
dot.classList.toggle('active', _.page === index) |
| 340 |
}) |
| 341 |
} |
| 342 |
|
| 343 |
if (event && _.opt.scrollLock) { |
| 344 |
clearTimeout(_.scrollLock) |
| 345 |
_.scrollLock = setTimeout(function () { |
| 346 |
clearTimeout(_.scrollLock) |
| 347 |
// dont attempt to scroll less than a pixel fraction - causes looping |
| 348 |
if (Math.abs(_.ele.scrollLeft / _.itemWidth - _.slide) > 0.02) { |
| 349 |
if (!_.mouseDown) { |
| 350 |
// Only scroll if not at the end (#94) |
| 351 |
if (_.trackWidth > _.containerWidth + _.opt.dir *_.ele.scrollLeft) { |
| 352 |
_.scrollItem(_.getCurrentSlide()) |
| 353 |
} |
| 354 |
} |
| 355 |
} |
| 356 |
}, _.opt.scrollLockDelay || 250) |
| 357 |
} |
| 358 |
} |
| 359 |
|
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gliderPrototype.getCurrentSlide = function () { |
| 361 |
var _ = this |
| 362 |
return _.round(_.ele.scrollLeft / _.itemWidth) |
| 363 |
} |
| 364 |
|
| 365 |
gliderPrototype.scrollItem = function (slide, dot, e) { |
| 366 |
if (e) e.preventDefault() |
| 367 |
|
| 368 |
var _ = this |
| 369 |
|
| 370 |
var originalSlide = slide |
| 371 |
++_.animate_id |
| 372 |
|
| 373 |
if (dot === true) { |
| 374 |
slide = slide * _.containerWidth |
| 375 |
slide = Math.round(slide / _.itemWidth) * _.itemWidth |
| 376 |
} else { |
| 377 |
if (typeof slide === 'string') { |
| 378 |
var backwards = slide === 'prev' |
| 379 |
|
| 380 |
// use precise location if fractional slides are on |
| 381 |
if (_.opt.slidesToScroll % 1 || _.opt.slidesToShow % 1) { |
| 382 |
slide = _.getCurrentSlide() |
| 383 |
} else { |
| 384 |
slide = _.slide |
| 385 |
} |
| 386 |
|
| 387 |
if (backwards) slide -= _.opt.slidesToScroll |
| 388 |
else slide += _.opt.slidesToScroll |
| 389 |
|
| 390 |
if (_.opt.rewind) { |
| 391 |
var scrollLeft = _.opt.dir * _.ele.scrollLeft |
| 392 |
slide = |
| 393 |
backwards && !scrollLeft |
| 394 |
? _.slides.length |
| 395 |
: !backwards && |
| 396 |
scrollLeft + _.containerWidth >= Math.floor(_.trackWidth) |
| 397 |
? 0 |
| 398 |
: slide |
| 399 |
} |
| 400 |
} |
| 401 |
|
| 402 |
slide = Math.max(Math.min(slide, _.slides.length), 0) |
| 403 |
|
| 404 |
_.slide = slide |
| 405 |
slide = _.itemWidth * slide |
| 406 |
} |
| 407 |
|
| 408 |
_.scrollTo( |
| 409 |
slide, |
| 410 |
_.opt.duration * Math.abs( _.opt.dir * _.ele.scrollLeft - slide), |
| 411 |
function () { |
| 412 |
_.updateControls() |
| 413 |
_.emit('animated', { |
| 414 |
value: originalSlide, |
| 415 |
type: |
| 416 |
typeof originalSlide === 'string' ? 'arrow' : dot ? 'dot' : 'slide' |
| 417 |
}) |
| 418 |
} |
| 419 |
) |
| 420 |
|
| 421 |
return false |
| 422 |
} |
| 423 |
|
| 424 |
gliderPrototype.settingsBreakpoint = function () { |
| 425 |
var _ = this |
| 426 |
|
| 427 |
var resp = _._opt.responsive |
| 428 |
|
| 429 |
if (resp) { |
| 430 |
// Sort the breakpoints in mobile first order |
| 431 |
resp.sort(function (a, b) { |
| 432 |
return b.breakpoint - a.breakpoint |
| 433 |
}) |
| 434 |
|
| 435 |
for (var i = 0; i < resp.length; ++i) { |
| 436 |
var size = resp[i] |
| 437 |
if (_window.innerWidth >= size.breakpoint) { |
| 438 |
if (_.breakpoint !== size.breakpoint) { |
| 439 |
_.opt = Object.assign({}, _._opt, size.settings) |
| 440 |
_.breakpoint = size.breakpoint |
| 441 |
return true |
| 442 |
} |
| 443 |
return false |
| 444 |
} |
| 445 |
} |
| 446 |
} |
| 447 |
// set back to defaults in case they were overriden |
| 448 |
var breakpointChanged = _.breakpoint !== 0 |
| 449 |
_.opt = Object.assign({}, _._opt) |
| 450 |
_.breakpoint = 0 |
| 451 |
return breakpointChanged |
| 452 |
} |
| 453 |
|
| 454 |
gliderPrototype.scrollTo = function (scrollTarget, scrollDuration, callback) { |
| 455 |
var _ = this |
| 456 |
|
| 457 |
var start = new Date().getTime() |
| 458 |
|
| 459 |
var animateIndex = _.animate_id |
| 460 |
|
| 461 |
var animate = function () { |
| 462 |
var now = new Date().getTime() - start |
| 463 |
_.scrollLeft = _.scrollLeft + (scrollTarget - _.scrollLeft) * _.opt.easing(0, now, 0, 1, scrollDuration) |
| 464 |
_.ele.scrollLeft = _.opt.dir * _.scrollLeft |
| 465 |
|
| 466 |
if (now < scrollDuration && animateIndex === _.animate_id) { |
| 467 |
_window.requestAnimationFrame(animate) |
| 468 |
} else { |
| 469 |
_.scrollLeft = scrollTarget |
| 470 |
_.ele.scrollLeft = _.opt.dir * _.scrollLeft |
| 471 |
callback && callback.call(_) |
| 472 |
} |
| 473 |
} |
| 474 |
|
| 475 |
_window.requestAnimationFrame(animate) |
| 476 |
} |
| 477 |
|
| 478 |
gliderPrototype.removeItem = function (index) { |
| 479 |
var _ = this |
| 480 |
|
| 481 |
if (_.slides.length) { |
| 482 |
_.track.removeChild(_.slides[index]) |
| 483 |
_.refresh(true) |
| 484 |
_.emit('remove') |
| 485 |
} |
| 486 |
} |
| 487 |
|
| 488 |
gliderPrototype.addItem = function (ele) { |
| 489 |
var _ = this |
| 490 |
|
| 491 |
_.track.appendChild(ele) |
| 492 |
_.refresh(true) |
| 493 |
_.emit('add') |
| 494 |
} |
| 495 |
|
| 496 |
gliderPrototype.handleMouse = function (e) { |
| 497 |
var _ = this |
| 498 |
if (_.mouseDown) { |
| 499 |
_.isDrag = true |
| 500 |
_.ele.scrollLeft += _.opt.dir * |
| 501 |
(_.mouseDown - e.clientX) * (_.opt.dragVelocity || 3.3) |
| 502 |
_.mouseDown = e.clientX |
| 503 |
} |
| 504 |
} |
| 505 |
|
| 506 |
// used to round to the nearest 0.XX fraction |
| 507 |
gliderPrototype.round = function (double) { |
| 508 |
var _ = this |
| 509 |
var step = _.opt.slidesToScroll % 1 || 1 |
| 510 |
var inv = 1.0 / step |
| 511 |
return Math.round(double * inv) / inv |
| 512 |
} |
| 513 |
|
| 514 |
gliderPrototype.refresh = function (paging) { |
| 515 |
var _ = this |
| 516 |
_.init(true, paging) |
| 517 |
} |
| 518 |
|
| 519 |
gliderPrototype.setOption = function (opt, global) { |
| 520 |
var _ = this |
| 521 |
|
| 522 |
if (_.breakpoint && !global) { |
| 523 |
_._opt.responsive.forEach(function (v) { |
| 524 |
if (v.breakpoint === _.breakpoint) { |
| 525 |
v.settings = Object.assign({}, v.settings, opt) |
| 526 |
} |
| 527 |
}) |
| 528 |
} else { |
| 529 |
_._opt = Object.assign({}, _._opt, opt) |
| 530 |
} |
| 531 |
|
| 532 |
_.breakpoint = 0 |
| 533 |
_.settingsBreakpoint() |
| 534 |
} |
| 535 |
|
| 536 |
gliderPrototype.destroy = function () { |
| 537 |
var _ = this |
| 538 |
|
| 539 |
var replace = _.ele.cloneNode(true) |
| 540 |
|
| 541 |
var clear = function (ele) { |
| 542 |
ele.removeAttribute('style'); |
| 543 |
[].forEach.call(ele.classList, function (className) { |
| 544 |
/^glider/.test(className) && ele.classList.remove(className) |
| 545 |
}) |
| 546 |
} |
| 547 |
// remove track |
| 548 |
replace.children[0].outerHTML = replace.children[0].innerHTML |
| 549 |
clear(replace); |
| 550 |
[].forEach.call(replace.getElementsByTagName('*'), clear) |
| 551 |
_.ele.parentNode.replaceChild(replace, _.ele) |
| 552 |
_.event(_window, 'remove', { |
| 553 |
resize: _.resize |
| 554 |
}) |
| 555 |
_.emit('destroy') |
| 556 |
} |
| 557 |
|
| 558 |
gliderPrototype.emit = function (name, arg) { |
| 559 |
var _ = this |
| 560 |
|
| 561 |
var e = new _window.CustomEvent('glider-' + name, { |
| 562 |
bubbles: !_.opt.eventPropagate, |
| 563 |
detail: arg |
| 564 |
}) |
| 565 |
_.ele.dispatchEvent(e) |
| 566 |
} |
| 567 |
|
| 568 |
gliderPrototype.event = function (ele, type, args) { |
| 569 |
var eventHandler = ele[type + 'EventListener'].bind(ele) |
| 570 |
Object.keys(args).forEach(function (k) { |
| 571 |
eventHandler(k, args[k]) |
| 572 |
}) |
| 573 |
} |
| 574 |
|
| 575 |
return Glider |
| 576 |
}) |
| 577 |
|
