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@@ -0,0 +1,556 @@
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+function Swipe(container, options) {
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+
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+ "use strict";
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+
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+ // utilities
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+ var noop = function() {}; // simple no operation function
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+ var offloadFn = function(fn) { setTimeout(fn || noop, 0) }; // offload a functions execution
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+
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+ // check browser capabilities
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+ var browser = {
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+ addEventListener: !!window.addEventListener,
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+ touch: ('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch,
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+ transitions: (function(temp) {
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+ var props = ['transitionProperty', 'WebkitTransition', 'MozTransition', 'OTransition', 'msTransition'];
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+ for ( var i in props ) if (temp.style[ props[i] ] !== undefined) return true;
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+ return false;
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+ })(document.createElement('swipe'))
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+ };
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+
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+ // quit if no root element
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+ if (!container) return;
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+ var element = container.children[0];
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+ var slides, slidePos, width, length;
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+ options = options || {};
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+ var index = parseInt(options.startSlide, 10) || 0;
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+ var speed = options.speed || 300;
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+ options.continuous = options.continuous !== undefined ? options.continuous : true;
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+
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+ function setup() {
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+
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+ // cache slides
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+ slides = element.children;
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+ length = slides.length;
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+
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+ // set continuous to false if only one slide
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+ if (slides.length < 2) options.continuous = false;
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+
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+ //special case if two slides
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+ if (browser.transitions && options.continuous && slides.length < 3) {
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+ element.appendChild(slides[0].cloneNode(true));
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+ element.appendChild(element.children[1].cloneNode(true));
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+ slides = element.children;
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+ }
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+
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+ // create an array to store current positions of each slide
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+ slidePos = new Array(slides.length);
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+
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+ // determine width of each slide
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+ width = container.getBoundingClientRect().width || container.offsetWidth;
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+
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+ element.style.width = (slides.length * width) + 'px';
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+
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+ // stack elements
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+ var pos = slides.length;
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+ while(pos--) {
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+
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+ var slide = slides[pos];
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+
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+ slide.style.width = width + 'px';
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+ slide.setAttribute('data-index', pos);
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+
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+ if (browser.transitions) {
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+ slide.style.left = (pos * -width) + 'px';
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+ move(pos, index > pos ? -width : (index < pos ? width : 0), 0);
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+ }
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+
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+ }
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+
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+ // reposition elements before and after index
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+ if (options.continuous && browser.transitions) {
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+ move(circle(index-1), -width, 0);
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+ move(circle(index+1), width, 0);
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+ }
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+
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+ if (!browser.transitions) element.style.left = (index * -width) + 'px';
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+
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+ container.style.visibility = 'visible';
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+
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+ }
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+
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+ function prev() {
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+
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+ if (options.continuous) slide(index-1);
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+ else if (index) slide(index-1);
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+
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+ }
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+
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+ function next() {
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+
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+ if (options.continuous) slide(index+1);
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+ else if (index < slides.length - 1) slide(index+1);
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+
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+ }
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+
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+ function circle(index) {
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+
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+ // a simple positive modulo using slides.length
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+ return (slides.length + (index % slides.length)) % slides.length;
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+
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+ }
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+
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+ function slide(to, slideSpeed) {
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+
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+ // do nothing if already on requested slide
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+ if (index == to) return;
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+
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+ if (browser.transitions) {
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+
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+ var direction = Math.abs(index-to) / (index-to); // 1: backward, -1: forward
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+
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+ // get the actual position of the slide
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+ if (options.continuous) {
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+ var natural_direction = direction;
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+ direction = -slidePos[circle(to)] / width;
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+
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+ // if going forward but to < index, use to = slides.length + to
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+ // if going backward but to > index, use to = -slides.length + to
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+ if (direction !== natural_direction) to = -direction * slides.length + to;
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+
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+ }
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+
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+ var diff = Math.abs(index-to) - 1;
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+
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+ // move all the slides between index and to in the right direction
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+ while (diff--) move( circle((to > index ? to : index) - diff - 1), width * direction, 0);
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+
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+ to = circle(to);
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+
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+ move(index, width * direction, slideSpeed || speed);
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+ move(to, 0, slideSpeed || speed);
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+
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+ if (options.continuous) move(circle(to - direction), -(width * direction), 0); // we need to get the next in place
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+
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+ } else {
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+
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+ to = circle(to);
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+ animate(index * -width, to * -width, slideSpeed || speed);
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+ //no fallback for a circular continuous if the browser does not accept transitions
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+ }
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+
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+ index = to;
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+ offloadFn(options.callback && options.callback(index, slides[index]));
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+ }
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+
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+ function move(index, dist, speed) {
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+
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+ translate(index, dist, speed);
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+ slidePos[index] = dist;
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+
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+ }
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+
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+ function translate(index, dist, speed) {
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+
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+ var slide = slides[index];
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+ var style = slide && slide.style;
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+
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+ if (!style) return;
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+
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+ style.webkitTransitionDuration =
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+ style.MozTransitionDuration =
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+ style.msTransitionDuration =
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+ style.OTransitionDuration =
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+ style.transitionDuration = speed + 'ms';
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+
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+ style.webkitTransform = 'translate(' + dist + 'px,0)' + 'translateZ(0)';
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+ style.msTransform =
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+ style.MozTransform =
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+ style.OTransform = 'translateX(' + dist + 'px)';
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+
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+ }
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+
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+ function animate(from, to, speed) {
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+
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+ // if not an animation, just reposition
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+ if (!speed) {
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+
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+ element.style.left = to + 'px';
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+ return;
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+
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+ }
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+
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+ var start = +new Date;
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+
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+ var timer = setInterval(function() {
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+
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+ var timeElap = +new Date - start;
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+
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+ if (timeElap > speed) {
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+
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+ element.style.left = to + 'px';
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+
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+ if (delay) begin();
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+
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+ options.transitionEnd && options.transitionEnd.call(event, index, slides[index]);
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+
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+ clearInterval(timer);
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+ return;
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+
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+ }
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+
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+ element.style.left = (( (to - from) * (Math.floor((timeElap / speed) * 100) / 100) ) + from) + 'px';
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+
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+ }, 4);
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+
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+ }
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+
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+ // setup auto slideshow
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+ var delay = options.auto || 0;
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+ var interval;
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+
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+ function begin() {
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+
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+ interval = setTimeout(next, delay);
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+
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+ }
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+
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+ function stop() {
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+
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+ delay = 0;
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+ clearTimeout(interval);
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+
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+ }
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+
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+
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+ // setup initial vars
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+ var start = {};
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+ var delta = {};
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+ var isScrolling;
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+
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+ // setup event capturing
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+ var events = {
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+
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+ handleEvent: function(event) {
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+
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+ switch (event.type) {
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+ case 'touchstart': this.start(event); break;
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+ case 'touchmove': this.move(event); break;
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+ case 'touchend': offloadFn(this.end(event)); break;
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+ case 'webkitTransitionEnd':
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+ case 'msTransitionEnd':
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+ case 'oTransitionEnd':
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+ case 'otransitionend':
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+ case 'transitionend': offloadFn(this.transitionEnd(event)); break;
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+ case 'resize': offloadFn(setup.call()); break;
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+ }
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+
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+ if (options.stopPropagation) event.stopPropagation();
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+
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+ },
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+ start: function(event) {
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+
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+ var touches = event.touches[0];
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+
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+ // measure start values
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+ start = {
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+
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+ // get initial touch coords
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+ x: touches.pageX,
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+ y: touches.pageY,
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+
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+ // store time to determine touch duration
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+ time: +new Date
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+
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+ };
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+
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+ // used for testing first move event
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+ isScrolling = undefined;
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+
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+ // reset delta and end measurements
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+ delta = {};
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+
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+ // attach touchmove and touchend listeners
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+ element.addEventListener('touchmove', this, false);
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+ element.addEventListener('touchend', this, false);
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+
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+ },
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+ move: function(event) {
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+
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+ // ensure swiping with one touch and not pinching
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+ if ( event.touches.length > 1 || event.scale && event.scale !== 1) return
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+
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+ if (options.disableScroll) event.preventDefault();
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+
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+ var touches = event.touches[0];
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+
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+ // measure change in x and y
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+ delta = {
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+ x: touches.pageX - start.x,
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+ y: touches.pageY - start.y
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+ }
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+
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+ // determine if scrolling test has run - one time test
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+ if ( typeof isScrolling == 'undefined') {
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+ isScrolling = !!( isScrolling || Math.abs(delta.x) < Math.abs(delta.y) );
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+ }
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+
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+ // if user is not trying to scroll vertically
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+ if (!isScrolling) {
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+
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+ // prevent native scrolling
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+ event.preventDefault();
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+
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+ // stop slideshow
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+ stop();
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+
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+ // increase resistance if first or last slide
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+ if (options.continuous) { // we don't add resistance at the end
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+
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+ translate(circle(index-1), delta.x + slidePos[circle(index-1)], 0);
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+ translate(index, delta.x + slidePos[index], 0);
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+ translate(circle(index+1), delta.x + slidePos[circle(index+1)], 0);
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+
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+ } else {
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+
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+ delta.x =
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+ delta.x /
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+ ( (!index && delta.x > 0 // if first slide and sliding left
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+ || index == slides.length - 1 // or if last slide and sliding right
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+ && delta.x < 0 // and if sliding at all
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+ ) ?
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+ ( Math.abs(delta.x) / width + 1 ) // determine resistance level
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+ : 1 ); // no resistance if false
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+
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+ // translate 1:1
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+ translate(index-1, delta.x + slidePos[index-1], 0);
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+ translate(index, delta.x + slidePos[index], 0);
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+ translate(index+1, delta.x + slidePos[index+1], 0);
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+ }
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+
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+ }
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+
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+ },
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+ end: function(event) {
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+
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+ // measure duration
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+ var duration = +new Date - start.time;
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+
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+ // determine if slide attempt triggers next/prev slide
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+ var isValidSlide =
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+ Number(duration) < 250 // if slide duration is less than 250ms
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+ && Math.abs(delta.x) > 20 // and if slide amt is greater than 20px
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+ || Math.abs(delta.x) > width/2; // or if slide amt is greater than half the width
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+
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+ // determine if slide attempt is past start and end
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+ var isPastBounds =
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+ !index && delta.x > 0 // if first slide and slide amt is greater than 0
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+ || index == slides.length - 1 && delta.x < 0; // or if last slide and slide amt is less than 0
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+
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+ if (options.continuous) isPastBounds = false;
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+
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+ // determine direction of swipe (true:right, false:left)
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+ var direction = delta.x < 0;
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+
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+ // if not scrolling vertically
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+ if (!isScrolling) {
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+
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+ if (isValidSlide && !isPastBounds) {
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+
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+ if (direction) {
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+
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+ if (options.continuous) { // we need to get the next in this direction in place
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+
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+ move(circle(index-1), -width, 0);
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+ move(circle(index+2), width, 0);
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+
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+ } else {
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+ move(index-1, -width, 0);
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+ }
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+
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+ move(index, slidePos[index]-width, speed);
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+ move(circle(index+1), slidePos[circle(index+1)]-width, speed);
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+ index = circle(index+1);
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+
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+ } else {
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+ if (options.continuous) { // we need to get the next in this direction in place
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+
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+ move(circle(index+1), width, 0);
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+ move(circle(index-2), -width, 0);
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+
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+ } else {
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+ move(index+1, width, 0);
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+ }
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+
|
|
|
|
+ move(index, slidePos[index]+width, speed);
|
|
|
|
+ move(circle(index-1), slidePos[circle(index-1)]+width, speed);
|
|
|
|
+ index = circle(index-1);
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ options.callback && options.callback(index, slides[index]);
|
|
|
|
+
|
|
|
|
+ } else {
|
|
|
|
+
|
|
|
|
+ if (options.continuous) {
|
|
|
|
+
|
|
|
|
+ move(circle(index-1), -width, speed);
|
|
|
|
+ move(index, 0, speed);
|
|
|
|
+ move(circle(index+1), width, speed);
|
|
|
|
+
|
|
|
|
+ } else {
|
|
|
|
+
|
|
|
|
+ move(index-1, -width, speed);
|
|
|
|
+ move(index, 0, speed);
|
|
|
|
+ move(index+1, width, speed);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ // kill touchmove and touchend event listeners until touchstart called again
|
|
|
|
+ element.removeEventListener('touchmove', events, false)
|
|
|
|
+ element.removeEventListener('touchend', events, false)
|
|
|
|
+
|
|
|
|
+ },
|
|
|
|
+ transitionEnd: function(event) {
|
|
|
|
+
|
|
|
|
+ if (parseInt(event.target.getAttribute('data-index'), 10) == index) {
|
|
|
|
+
|
|
|
|
+ if (delay) begin();
|
|
|
|
+
|
|
|
|
+ options.transitionEnd && options.transitionEnd.call(event, index, slides[index]);
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ // trigger setup
|
|
|
|
+ setup();
|
|
|
|
+
|
|
|
|
+ // start auto slideshow if applicable
|
|
|
|
+ if (delay) begin();
|
|
|
|
+
|
|
|
|
+
|
|
|
|
+ // add event listeners
|
|
|
|
+ if (browser.addEventListener) {
|
|
|
|
+
|
|
|
|
+ // set touchstart event on element
|
|
|
|
+ if (browser.touch) element.addEventListener('touchstart', events, false);
|
|
|
|
+
|
|
|
|
+ if (browser.transitions) {
|
|
|
|
+ element.addEventListener('webkitTransitionEnd', events, false);
|
|
|
|
+ element.addEventListener('msTransitionEnd', events, false);
|
|
|
|
+ element.addEventListener('oTransitionEnd', events, false);
|
|
|
|
+ element.addEventListener('otransitionend', events, false);
|
|
|
|
+ element.addEventListener('transitionend', events, false);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ // set resize event on window
|
|
|
|
+ window.addEventListener('resize', events, false);
|
|
|
|
+
|
|
|
|
+ } else {
|
|
|
|
+
|
|
|
|
+ window.onresize = function () { setup() }; // to play nice with old IE
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ // expose the Swipe API
|
|
|
|
+ return {
|
|
|
|
+ setup: function() {
|
|
|
|
+
|
|
|
|
+ setup();
|
|
|
|
+
|
|
|
|
+ },
|
|
|
|
+ slide: function(to, speed) {
|
|
|
|
+
|
|
|
|
+ // cancel slideshow
|
|
|
|
+ stop();
|
|
|
|
+
|
|
|
|
+ slide(to, speed);
|
|
|
|
+
|
|
|
|
+ },
|
|
|
|
+ prev: function() {
|
|
|
|
+
|
|
|
|
+ // cancel slideshow
|
|
|
|
+ stop();
|
|
|
|
+
|
|
|
|
+ prev();
|
|
|
|
+
|
|
|
|
+ },
|
|
|
|
+ next: function() {
|
|
|
|
+
|
|
|
|
+ // cancel slideshow
|
|
|
|
+ stop();
|
|
|
|
+
|
|
|
|
+ next();
|
|
|
|
+
|
|
|
|
+ },
|
|
|
|
+ getPos: function() {
|
|
|
|
+
|
|
|
|
+ // return current index position
|
|
|
|
+ return index;
|
|
|
|
+
|
|
|
|
+ },
|
|
|
|
+ getNumSlides: function() {
|
|
|
|
+
|
|
|
|
+ // return total number of slides
|
|
|
|
+ return length;
|
|
|
|
+ },
|
|
|
|
+ kill: function() {
|
|
|
|
+
|
|
|
|
+ // cancel slideshow
|
|
|
|
+ stop();
|
|
|
|
+
|
|
|
|
+ // reset element
|
|
|
|
+ element.style.width = 'auto';
|
|
|
|
+ element.style.left = 0;
|
|
|
|
+
|
|
|
|
+ // reset slides
|
|
|
|
+ var pos = slides.length;
|
|
|
|
+ while(pos--) {
|
|
|
|
+
|
|
|
|
+ var slide = slides[pos];
|
|
|
|
+ slide.style.width = '100%';
|
|
|
|
+ slide.style.left = 0;
|
|
|
|
+
|
|
|
|
+ if (browser.transitions) translate(pos, 0, 0);
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ // removed event listeners
|
|
|
|
+ if (browser.addEventListener) {
|
|
|
|
+
|
|
|
|
+ // remove current event listeners
|
|
|
|
+ element.removeEventListener('touchstart', events, false);
|
|
|
|
+ element.removeEventListener('webkitTransitionEnd', events, false);
|
|
|
|
+ element.removeEventListener('msTransitionEnd', events, false);
|
|
|
|
+ element.removeEventListener('oTransitionEnd', events, false);
|
|
|
|
+ element.removeEventListener('otransitionend', events, false);
|
|
|
|
+ element.removeEventListener('transitionend', events, false);
|
|
|
|
+ window.removeEventListener('resize', events, false);
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+ else {
|
|
|
|
+
|
|
|
|
+ window.onresize = null;
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+
|
|
|
|
+if ( window.jQuery || window.Zepto ) {
|
|
|
|
+ (function($) {
|
|
|
|
+ $.fn.Swipe = function(params) {
|
|
|
|
+ return this.each(function() {
|
|
|
|
+ $(this).data('Swipe', new Swipe($(this)[0], params));
|
|
|
|
+ });
|
|
|
|
+ }
|
|
|
|
+ })( window.jQuery || window.Zepto )
|
|
|
|
+}
|