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slick.js
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// Slick
/*
slick.js
Author: Ken Wheeler
Date: 03/23/14
Version: 1.0
*/
/*global window, document, $, setInterval, clearInterval */
var slick = window.slick || {};
/************ Helpers ***********/
// Function Binder
var functionBinder = function(fn, me) {
'use strict';
return function() {
return fn.apply(me, arguments);
};
};
// Mobile Detect
var mobileDetect = function() {
var check = false;
(function(a) {
if (/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(a) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0, 4)))
check = true;
})(navigator.userAgent || navigator.vendor || window.opera);
return check;
};
// Helpers
function throttle(fn, threshhold, scope) {
threshhold || (threshhold = 250);
var last,
deferTimer;
return function() {
var context = scope || this;
var now = +new Date,
args = arguments;
if (last && now < last + threshhold) {
// hold on to it
clearTimeout(deferTimer);
deferTimer = setTimeout(function() {
last = now;
fn.apply(context, args);
}, threshhold);
} else {
last = now;
fn.apply(context, args);
}
};
}
/********** End Helpers *********/
slick.slider = (function() {
'use strict';
function slider(element, settings) {
this.defaults = {
autoplay: false,
autoplaySpeed: 3000,
dots: false,
draggable: true,
arrows: true,
infinite: true,
onBeforeChange: null,
onAfterChange: null,
responsive: null,
slide: 'div',
slidesToShow: 1,
slidesToScroll: 1,
speed: 300,
swipe: true,
touchMove: true,
touchThreshold: 5
};
this.activeBreakpoint = null;
this.animating = false;
this.animType = null;
this.autoPlayTimer = null;
this.breakpoints = [];
this.breakpointSettings = [];
this.currentSlide = 0;
this.currentLeft = null;
this.direction = 1;
this.dots = null;
this.listWidth = null;
this.loadIndex = 0;
this.nextArrow = null;
this.prevArrow = null;
this.slideCount = null;
this.slideWidth = null;
this.slideTrack = null;
this.slides = null;
this.sliding = false;
this.slideOffset = 0;
this.slider = $(element);
this.swipeLeft = null;
this.list = null;
this.touchObject = {};
this.transformsEnabled = false;
this.options = $.extend({}, this.defaults, settings);
this.originalSettings = this.options;
var responsiveSettings = this.options.responsive || null;
if(responsiveSettings && responsiveSettings.length > -1) {
for(var breakpoint in responsiveSettings) {
this.breakpoints.push(responsiveSettings[breakpoint].breakpoint);
this.breakpointSettings[responsiveSettings[breakpoint].breakpoint] = responsiveSettings[breakpoint].settings;
}
this.breakpoints.sort(function(a,b){return b-a});
}
this.changeSlide = functionBinder(this.changeSlide, this);
this.setPosition = functionBinder(this.setPosition, this);
this.swipeHandler = functionBinder(this.swipeHandler, this);
this.dragHandler = functionBinder(this.dragHandler, this);
this.autoPlayIterator = functionBinder(this.autoPlayIterator, this);
this.init();
}
slider.prototype.init = function() {
if (!$(this.slider).hasClass('slick-initialized')) {
$(this.slider).addClass('slick-initialized');
this.buildOut();
this.setValues();
this.getAnimType();
this.setPosition();
this.startLoad();
this.loadSlider();
this.initializeEvents();
this.checkResponsive();
}
};
slider.prototype.getAnimType = function() {
if (document.body.style.MozTransform !== undefined) {
this.animType = 'MozTransform';
} else if (document.body.style.webkitTransform !== undefined) {
this.animType = "webkitTransform";
} else if (document.body.style.msTransform !== undefined) {
this.animType = "msTransform";
}
if (this.animType !== null) {
this.transformsEnabled = true;
}
};
slider.prototype.autoPlay = function() {
if (this.autoPlayTimer) {
clearInterval(this.autoPlayTimer);
}
this.autoPlayTimer = setInterval(this.autoPlayIterator, this.options.autoplaySpeed);
};
slider.prototype.autoPlayIterator = function() {
if (this.options.infinite === false) {
if (this.direction === 1) {
if ((this.currentSlide + 1) === this.slideCount - 1) {
this.direction = 0;
}
this.slideHandler(this.currentSlide + this.options.slidesToScroll);
} else {
if ((this.currentSlide - 1 === 0)) {
this.direction = 1;
}
this.slideHandler(this.currentSlide - this.options.slidesToScroll);
}
} else {
this.slideHandler(this.currentSlide + this.options.slidesToScroll);
}
};
slider.prototype.checkResponsive = function() {
if(this.originalSettings.responsive && this.originalSettings.responsive.length > -1) {
var targetBreakpoint = null;
for(var breakpoint in this.breakpoints) {
if($(window).width() < this.breakpoints[breakpoint]) {
targetBreakpoint = this.breakpoints[breakpoint];
}
}
if(targetBreakpoint !== null) {
if(this.activeBreakpoint !== null) {
if(targetBreakpoint !== this.activeBreakpoint) {
this.activeBreakpoint = targetBreakpoint;
this.options = $.extend({}, this.defaults, this.breakpointSettings[targetBreakpoint]);
this.refresh();
}
} else {
this.activeBreakpoint = targetBreakpoint;
this.options = $.extend({}, this.defaults, this.breakpointSettings[targetBreakpoint]);
this.refresh();
}
} else {
if(this.activeBreakpoint !== null) {
this.activeBreakpoint = null;
this.options = $.extend({}, this.defaults, this.originalSettings);
this.refresh();
}
}
}
};
slider.prototype.startLoad = function() {
if (this.options.arrows === true) {
this.prevArrow.hide();
this.nextArrow.hide();
}
if (this.options.dots === true) {
this.dots.hide();
}
this.slider.addClass('slick-loading');
};
slider.prototype.loadSlider = function() {
var self = this;
self.setPosition();
self.slideTrack.animate({
opacity: 1
}, this.options.speed, function() {
self.setPosition();
});
if(document.readyState !== "complete") {
$(window).load(function() {
if (self.options.arrows === true) {
self.prevArrow.show();
self.nextArrow.show();
}
if (self.options.dots === true) {
self.dots.show();
}
self.slider.removeClass('slick-loading');
if (self.options.autoplay === true) {
self.autoPlay();
}
});
} else {
if (self.options.arrows === true) {
self.prevArrow.show();
self.nextArrow.show();
}
if (self.options.dots === true) {
self.dots.show();
}
self.slider.removeClass('slick-loading');
if (self.options.autoplay === true) {
self.autoPlay();
}
}
};
slider.prototype.setValues = function() {
this.listWidth = this.list.innerWidth();
this.slideWidth = Math.ceil(this.listWidth / this.options.slidesToShow);
};
slider.prototype.buildOut = function() {
var i;
this.slides = $(this.options.slide + ':not(.cloned)', this.slider).addClass('slide');
this.slideCount = this.slides.length;
if((this.slideCount % this.options.slidesToScroll) !== 0 && this.options.slidesToShow !== 1) {
var placeholders = Math.abs(this.options.slidesToScroll - (this.slideCount % this.options.slidesToScroll));
for(i=0; i<placeholders; i++) {
$('<div/>').appendTo(this.slider).addClass('slide placeholder');
}
this.slides = $('.slide:not(.cloned)', this.slider);
this.slideCount = this.slides.length;
}
this.slider.addClass("slick-slider");
this.slideTrack = this.slides.wrapAll('<div class="slick-track"/>').parent();
this.list = this.slideTrack.wrap('<div class="slick-list"/>').parent();
this.slideTrack.css('opacity', 0);
if (this.options.arrows === true) {
this.prevArrow = $('<a href="javascript:void(0)">Previous</a>').appendTo(this.slider).addClass('slick-prev');
this.nextArrow = $('<a href="javascript:void(0)">Next</a>').appendTo(this.slider).addClass('slick-next');
if (this.options.infinite !== true) {
this.prevArrow.addClass('disabled');
}
}
if (this.options.dots === true) {
this.dots = $('<ul class="slick-dots"></ul>').appendTo(this.slider);
for (i = 1; i <= this.slideCount; i += 1) {
$('<li><a href="javascript:void(0)">' + i + '</a></li>').appendTo(this.dots);
}
if(this.options.slidesToScroll > 1) {
this.dots.find('li').hide();
var i = 0;
while(i < this.slideCount) {
$(this.dots.find('li').get(i)).show();
i = i + this.options.slidesToScroll;
}
}
this.dots.find('li').first().addClass('active');
}
if (this.options.draggable == true) {
this.list.addClass('draggable');
}
if (this.options.infinite === true) {
var slideIndex = null;
for(i=this.slideCount; i>(this.slideCount - this.options.slidesToShow); i--) {
slideIndex = i -1;
$(this.slides[slideIndex]).clone().prependTo(this.slideTrack).addClass('cloned');
}
for(i=0; i<this.options.slidesToShow; i++) {
slideIndex = i;
$(this.slides[slideIndex]).clone().appendTo(this.slideTrack).addClass('cloned');
}
}
};
slider.prototype.setDimensions = function() {
this.slideWidth = Math.ceil(this.listWidth / this.options.slidesToShow);
this.list.find('.slide').width(this.slideWidth);
this.slideTrack.width(Math.ceil((this.slideWidth * this.slider.find('.slide').length)));
};
slider.prototype.setPosition = function() {
this.setValues();
this.setDimensions();
if (this.options.infinite === true) {
this.slideOffset = (this.slideWidth * this.options.slidesToShow) * -1;
}
var animProps = {}, targetLeft = ((this.currentSlide * this.slideWidth) * -1) + this.slideOffset;
if (this.transformsEnabled === false) {
this.slideTrack.css('left', targetLeft);
} else {
animProps[this.animType] = "translate(" + targetLeft + "px, 0px)";
this.slideTrack.css(animProps);
}
};
slider.prototype.initializeEvents = function() {
var self = this;
if (this.options.arrows === true) {
this.prevArrow.on('click', {
message: 'previous'
}, this.changeSlide);
this.nextArrow.on('click', {
message: 'next'
}, this.changeSlide);
}
if (this.options.dots === true) {
$('li a', this.dots).on('click', {
message: 'index'
}, this.changeSlide);
}
if (this.options.swipe === true) {
this.list.on('touchstart', {
action: 'start'
}, throttle(this.swipeHandler, 20));
this.list.on('touchmove', {
action: 'move'
}, throttle(this.swipeHandler, 20));
this.list.on('touchend', {
action: 'end'
}, throttle(this.swipeHandler, 20));
}
if (this.options.draggable === true) {
this.list.on('mousedown', {action: 'start'}, this.dragHandler);
this.list.on('mousemove', {action: 'move'}, this.dragHandler);
this.list.on('mouseup', {action: 'end'}, this.dragHandler);
this.list.on('mouseout', {action: 'cancel'}, this.dragHandler);
}
$(window).on('orientationchange', this.setPosition);
$(window).on('resize', function(){
self.checkResponsive();
self.setPosition();
});
$(window).on('load', this.setPosition);
};
slider.prototype.changeSlide = function(event) {
var self = this;
switch (event.data.message) {
case 'previous':
if(this.animating == false) {
self.slideHandler(self.currentSlide - self.options.slidesToScroll);
} else {
return false;
}
break;
case 'next':
if(self.animating == false) {
self.slideHandler(self.currentSlide + self.options.slidesToScroll);
} else {
return false;
}
break;
case 'index':
if(self.animating == false) {
self.slideHandler($(event.target).parent().index());
} else {
return false;
}
break;
default:
return false;
}
};
slider.prototype.updateDots = function() {
this.dots.find('li').removeClass('active');
$(this.dots.find('li').get(this.currentSlide)).addClass('active');
};
slider.prototype.animateSlide = function(targetLeft, callback) {
var animProps = {}, self = this;
if(this.options.onBeforeChange !== null) {
this.options.onBeforeChange.call();
}
if (this.transformsEnabled === false) {
this.slideTrack.animate({
left: targetLeft
}, self.options.speed, callback);
} else {
$({
animStart: this.currentLeft
}).animate({
animStart: targetLeft
}, {
duration: self.options.speed,
step: function(now) {
animProps[self.animType] = "translate(" + now + "px, 0px)";
self.slideTrack.css(animProps);
},
complete: function() {
if(callback) {
callback.call();
}
}
});
}
}
slider.prototype.slideHandler = function(index) {
var animProps = {}, targetSlide, slideLeft, targetLeft = null,
self = this;
targetSlide = index;
targetLeft = ((targetSlide * this.slideWidth) * -1) + this.slideOffset;
slideLeft = ((this.currentSlide * this.slideWidth) * -1) + this.slideOffset;
if (self.options.autoplay === true) {
clearInterval(this.autoPlayTimer);
}
if (this.swipeLeft === null) {
this.currentLeft = slideLeft;
} else {
this.currentLeft = this.swipeLeft;
}
if (targetSlide < 0) {
if (this.options.infinite === true) {
this.animating = true;
this.animateSlide(targetLeft, function(){
self.animating = false;
self.currentSlide = self.slideCount - self.options.slidesToScroll;
self.setPosition();
if (self.swipeLeft !== null) {
self.swipeLeft = null;
}
if (self.options.dots) {
self.updateDots();
}
if (self.options.autoplay === true) {
self.autoPlay();
}
if(self.options.onAfterChange !== null) {
self.options.onAfterChange.call();
}
self.slides.removeClass('active');
$(self.slides.get(targetSlide)).addClass('active');
});
} else {
this.animateSlide(slideLeft);
return false;
}
} else if (targetSlide > (this.slideCount - 1)) {
if (this.options.infinite === true) {
this.animating = true;
this.animateSlide(targetLeft, function(){
self.animating = false;
self.currentSlide = 0;
self.setPosition();
if (self.swipeLeft !== null) {
self.swipeLeft = null;
}
if (self.options.dots) {
self.updateDots();
}
if (self.options.autoplay === true) {
self.autoPlay();
}
if(self.options.onAfterChange !== null) {
self.options.onAfterChange.call();
}
self.slides.removeClass('active');
$(self.slides.get(targetSlide)).addClass('active');
});
} else {
this.animateSlide(slideLeft);
return false;
}
} else {
this.animating = true;
this.animateSlide(targetLeft, function(){
self.animating = false;
self.currentSlide = targetSlide;
self.setPosition();
if (self.swipeLeft !== null) {
self.swipeLeft = null;
}
if (self.options.dots) {
self.updateDots();
}
if (self.options.autoplay === true) {
self.autoPlay();
}
if(self.options.onAfterChange !== null) {
self.options.onAfterChange.call();
}
self.slides.removeClass('active');
$(self.slides.get(targetSlide)).addClass('active');
if (self.options.arrows === true && self.options.infinite !== true) {
if (self.currentSlide === 0) {
self.prevArrow.addClass('disabled');
self.nextArrow.removeClass('disabled');
} else if (self.currentSlide >= (self.slideCount / self.options.slidesToScroll * self.options.slidesToShow) - self.options.slidesToScroll) {
self.nextArrow.addClass('disabled');
self.prevArrow.removeClass('disabled');
} else {
self.prevArrow.removeClass('disabled');
self.nextArrow.removeClass('disabled');
}
}
});
}
};
slider.prototype.dragHandler = function(event) {
var animProps = {}, curLeft, newLeft = null;
curLeft = ((this.currentSlide * this.slideWidth) * -1) + this.slideOffset;
this.touchObject.minSwipe = this.slideWidth / this.options.touchThreshold;
switch (event.data.action) {
case 'start':
this.list.addClass('dragging');
this.touchObject.startX = event.clientX;
this.touchObject.startY = event.clientY;
this.touchObject.curX = event.clientX;
this.touchObject.curY = event.clientY;
break;
case 'move':
this.touchObject.curX = event.clientX;
this.touchObject.curY = event.clientY;
this.touchObject.swipeLength = Math.round(Math.sqrt(Math.pow(this.touchObject.curX - this.touchObject.startX, 2)));
if (this.swipeDirection() !== 'up' && this.swipeDirection() !== 'down') {
event.originalEvent.preventDefault();
if (this.touchObject.curX > this.touchObject.startX) {
if(this.options.touchMove == true) {
newLeft = curLeft + this.touchObject.swipeLength;
if (this.transformsEnabled === false) {
this.slideTrack.css('left', newLeft);
} else {
animProps[this.animType] = "translate(" + newLeft + "px, 0px)";
this.slideTrack.css(animProps);
this.swipeLeft = newLeft;
}
}
} else {
if(this.options.touchMove == true) {
newLeft = curLeft - this.touchObject.swipeLength;
if (this.transformsEnabled === false) {
this.slideTrack.css('left', newLeft);
} else {
animProps[this.animType] = "translate(" + newLeft + "px, 0px)";
this.slideTrack.css(animProps);
this.swipeLeft = newLeft;
}
}
}
}
break;
case 'end':
this.list.removeClass('dragging');
if (this.touchObject.curX !== 0) {
if (this.touchObject.swipeLength >= this.touchObject.minSwipe) {
switch (this.swipeDirection()) {
case 'left':
this.slideHandler(this.currentSlide + this.options.slidesToScroll);
this.touchObject = {};
break;
case 'right':
this.slideHandler(this.currentSlide - this.options.slidesToScroll);
this.touchObject = {};
break;
}
} else {
this.slideHandler(this.currentSlide);
this.touchObject = {};
}
} else {
this.touchObject = {};
}
break;
case 'cancel':
this.list.removeClass('dragging');
if(this.touchObject.startX) {
this.slideHandler(this.currentSlide);
this.touchObject = {};
}
break;
}
}
slider.prototype.swipeHandler = function(event) {
var animProps = {}, curLeft, newLeft = null;
curLeft = ((this.currentSlide * this.slideWidth) * -1) + this.slideOffset;
this.touchObject.fingerCount = event.originalEvent.touches.length;
this.touchObject.minSwipe = this.slideWidth / this.options.touchThreshold;
switch (event.data.action) {
case 'start':
if (this.touchObject.fingerCount === 1) {
this.touchObject.startX = event.originalEvent.touches[0].pageX;
this.touchObject.startY = event.originalEvent.touches[0].pageY;
this.touchObject.curX = event.originalEvent.touches[0].pageX;
this.touchObject.curY = event.originalEvent.touches[0].pageY;
} else {
this.touchObject = {};
}
break;
case 'move':
if (event.originalEvent.touches.length === 1) {
this.touchObject.curX = event.originalEvent.touches[0].pageX;
this.touchObject.curY = event.originalEvent.touches[0].pageY;
this.touchObject.swipeLength = Math.round(Math.sqrt(Math.pow(this.touchObject.curX - this.touchObject.startX, 2)));
if (this.swipeDirection() !== 'up' && this.swipeDirection() !== 'down') {
event.originalEvent.preventDefault();
if (this.touchObject.curX > this.touchObject.startX) {
if(this.options.touchMove == true) {
newLeft = curLeft + this.touchObject.swipeLength;
if (this.transformsEnabled === false) {
this.slideTrack.css('left', newLeft);
} else {
animProps[this.animType] = "translate(" + newLeft + "px, 0px)";
this.slideTrack.css(animProps);
this.swipeLeft = newLeft;
}
}
} else {
if(this.options.touchMove == true) {
newLeft = curLeft - this.touchObject.swipeLength;
if (this.transformsEnabled === false) {
this.slideTrack.css('left', newLeft);
} else {
animProps[this.animType] = "translate(" + newLeft + "px, 0px)";
this.slideTrack.css(animProps);
this.swipeLeft = newLeft;
}
}
}
}
} else {
this.touchObject = {};
}
break;
case 'end':
if (this.touchObject.fingerCount === 0 && this.touchObject.curX !== 0) {
if (this.touchObject.swipeLength >= this.touchObject.minSwipe) {
switch (this.swipeDirection()) {
case 'left':
this.slideHandler(this.currentSlide + this.options.slidesToScroll);
this.touchObject = {};
break;
case 'right':
this.slideHandler(this.currentSlide - this.options.slidesToScroll);
this.touchObject = {};
break;
}
} else {
this.slideHandler(this.currentSlide);
this.touchObject = {};
}
} else {
this.touchObject = {};
}
break;
case 'cancel':
break;
}
};