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1607 lines
64 KiB
1607 lines
64 KiB
/**
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* bxSlider v4.2.12
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* Copyright 2013-2015 Steven Wanderski
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* Written while drinking Belgian ales and listening to jazz
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* Licensed under MIT (http://opensource.org/licenses/MIT)
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*/
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;(function($) {
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var defaults = {
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// GENERAL
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mode: 'horizontal',
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slideSelector: '',
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infiniteLoop: true,
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hideControlOnEnd: false,
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speed: 500,
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easing: null,
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slideMargin: 0,
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startSlide: 0,
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randomStart: false,
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captions: false,
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ticker: false,
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tickerHover: false,
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adaptiveHeight: false,
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adaptiveHeightSpeed: 500,
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video: false,
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useCSS: true,
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preloadImages: 'visible',
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responsive: true,
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slideZIndex: 50,
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wrapperClass: 'bx-wrapper',
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// TOUCH
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touchEnabled: true,
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swipeThreshold: 50,
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oneToOneTouch: true,
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preventDefaultSwipeX: true,
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preventDefaultSwipeY: false,
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// ACCESSIBILITY
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ariaLive: true,
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ariaHidden: true,
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// KEYBOARD
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keyboardEnabled: false,
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// PAGER
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pager: true,
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pagerType: 'full',
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pagerShortSeparator: ' / ',
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pagerSelector: null,
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buildPager: null,
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pagerCustom: null,
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// CONTROLS
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controls: true,
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nextText: 'Next',
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prevText: 'Prev',
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nextSelector: null,
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prevSelector: null,
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autoControls: false,
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startText: 'Start',
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stopText: 'Stop',
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autoControlsCombine: false,
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autoControlsSelector: null,
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// AUTO
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auto: false,
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pause: 4000,
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autoStart: true,
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autoDirection: 'next',
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stopAutoOnClick: false,
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autoHover: false,
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autoDelay: 0,
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autoSlideForOnePage: false,
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// CAROUSEL
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minSlides: 1,
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maxSlides: 1,
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moveSlides: 0,
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slideWidth: 0,
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shrinkItems: false,
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// CALLBACKS
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onSliderLoad: function() { return true; },
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onSlideBefore: function() { return true; },
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onSlideAfter: function() { return true; },
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onSlideNext: function() { return true; },
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onSlidePrev: function() { return true; },
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onSliderResize: function() { return true; }
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};
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$.fn.bxSlider = function(options) {
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if (this.length === 0) {
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return this;
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}
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// support multiple elements
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if (this.length > 1) {
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this.each(function() {
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$(this).bxSlider(options);
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});
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return this;
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}
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// create a namespace to be used throughout the plugin
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var slider = {},
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// set a reference to our slider element
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el = this,
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// get the original window dimens (thanks a lot IE)
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windowWidth = $(window).width(),
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windowHeight = $(window).height();
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// Return if slider is already initialized
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if ($(el).data('bxSlider')) { return; }
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/**
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* ===================================================================================
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* = PRIVATE FUNCTIONS
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* ===================================================================================
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*/
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/**
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* Initializes namespace settings to be used throughout plugin
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*/
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var init = function() {
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// Return if slider is already initialized
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if ($(el).data('bxSlider')) { return; }
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// merge user-supplied options with the defaults
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slider.settings = $.extend({}, defaults, options);
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// parse slideWidth setting
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slider.settings.slideWidth = parseInt(slider.settings.slideWidth);
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// store the original children
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slider.children = el.children(slider.settings.slideSelector);
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// check if actual number of slides is less than minSlides / maxSlides
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if (slider.children.length < slider.settings.minSlides) { slider.settings.minSlides = slider.children.length; }
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if (slider.children.length < slider.settings.maxSlides) { slider.settings.maxSlides = slider.children.length; }
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// if random start, set the startSlide setting to random number
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if (slider.settings.randomStart) { slider.settings.startSlide = Math.floor(Math.random() * slider.children.length); }
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// store active slide information
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slider.active = { index: slider.settings.startSlide };
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// store if the slider is in carousel mode (displaying / moving multiple slides)
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slider.carousel = slider.settings.minSlides > 1 || slider.settings.maxSlides > 1 ? true : false;
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// if carousel, force preloadImages = 'all'
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if (slider.carousel) { slider.settings.preloadImages = 'all'; }
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// calculate the min / max width thresholds based on min / max number of slides
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// used to setup and update carousel slides dimensions
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slider.minThreshold = (slider.settings.minSlides * slider.settings.slideWidth) + ((slider.settings.minSlides - 1) * slider.settings.slideMargin);
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slider.maxThreshold = (slider.settings.maxSlides * slider.settings.slideWidth) + ((slider.settings.maxSlides - 1) * slider.settings.slideMargin);
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// store the current state of the slider (if currently animating, working is true)
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slider.working = false;
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// initialize the controls object
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slider.controls = {};
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// initialize an auto interval
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slider.interval = null;
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// determine which property to use for transitions
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slider.animProp = slider.settings.mode === 'vertical' ? 'top' : 'left';
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// determine if hardware acceleration can be used
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slider.usingCSS = slider.settings.useCSS && slider.settings.mode !== 'fade' && (function() {
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// create our test div element
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var div = document.createElement('div'),
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// css transition properties
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props = ['WebkitPerspective', 'MozPerspective', 'OPerspective', 'msPerspective'];
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// test for each property
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for (var i = 0; i < props.length; i++) {
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if (div.style[props[i]] !== undefined) {
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slider.cssPrefix = props[i].replace('Perspective', '').toLowerCase();
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slider.animProp = '-' + slider.cssPrefix + '-transform';
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return true;
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}
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}
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return false;
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}());
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// if vertical mode always make maxSlides and minSlides equal
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if (slider.settings.mode === 'vertical') { slider.settings.maxSlides = slider.settings.minSlides; }
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// save original style data
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el.data('origStyle', el.attr('style'));
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el.children(slider.settings.slideSelector).each(function() {
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$(this).data('origStyle', $(this).attr('style'));
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});
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// perform all DOM / CSS modifications
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setup();
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};
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/**
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* Performs all DOM and CSS modifications
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*/
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var setup = function() {
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var preloadSelector = slider.children.eq(slider.settings.startSlide); // set the default preload selector (visible)
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// wrap el in a wrapper
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el.wrap('<div class="' + slider.settings.wrapperClass + '"><div class="bx-viewport"></div></div>');
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// store a namespace reference to .bx-viewport
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slider.viewport = el.parent();
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// add aria-live if the setting is enabled and ticker mode is disabled
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if (slider.settings.ariaLive && !slider.settings.ticker) {
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slider.viewport.attr('aria-live', 'polite');
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}
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// add a loading div to display while images are loading
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slider.loader = $('<div class="bx-loading" />');
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slider.viewport.prepend(slider.loader);
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// set el to a massive width, to hold any needed slides
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// also strip any margin and padding from el
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el.css({
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width: slider.settings.mode === 'horizontal' ? (slider.children.length * 1000 + 215) + '%' : 'auto',
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position: 'relative'
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});
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// if using CSS, add the easing property
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if (slider.usingCSS && slider.settings.easing) {
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el.css('-' + slider.cssPrefix + '-transition-timing-function', slider.settings.easing);
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// if not using CSS and no easing value was supplied, use the default JS animation easing (swing)
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} else if (!slider.settings.easing) {
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slider.settings.easing = 'swing';
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}
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// make modifications to the viewport (.bx-viewport)
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slider.viewport.css({
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width: '100%',
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overflow: 'hidden',
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position: 'relative'
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});
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slider.viewport.parent().css({
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maxWidth: getViewportMaxWidth()
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});
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// apply css to all slider children
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slider.children.css({
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float: slider.settings.mode === 'horizontal' ? 'left' : 'none',
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listStyle: 'none',
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position: 'relative'
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});
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// apply the calculated width after the float is applied to prevent scrollbar interference
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slider.children.css('width', getSlideWidth());
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// if slideMargin is supplied, add the css
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if (slider.settings.mode === 'horizontal' && slider.settings.slideMargin > 0) { slider.children.css('marginRight', slider.settings.slideMargin); }
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if (slider.settings.mode === 'vertical' && slider.settings.slideMargin > 0) { slider.children.css('marginBottom', slider.settings.slideMargin); }
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// if "fade" mode, add positioning and z-index CSS
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if (slider.settings.mode === 'fade') {
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slider.children.css({
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position: 'absolute',
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zIndex: 0,
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display: 'none'
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});
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// prepare the z-index on the showing element
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slider.children.eq(slider.settings.startSlide).css({zIndex: slider.settings.slideZIndex, display: 'block'});
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}
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// create an element to contain all slider controls (pager, start / stop, etc)
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slider.controls.el = $('<div class="bx-controls" />');
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// if captions are requested, add them
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if (slider.settings.captions) { appendCaptions(); }
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// check if startSlide is last slide
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slider.active.last = slider.settings.startSlide === getPagerQty() - 1;
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// if video is true, set up the fitVids plugin
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if (slider.settings.video) { el.fitVids(); }
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if (slider.settings.preloadImages === 'all' || slider.settings.ticker) { preloadSelector = slider.children; }
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// only check for control addition if not in "ticker" mode
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if (!slider.settings.ticker) {
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// if controls are requested, add them
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if (slider.settings.controls) { appendControls(); }
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// if auto is true, and auto controls are requested, add them
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if (slider.settings.auto && slider.settings.autoControls) { appendControlsAuto(); }
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// if pager is requested, add it
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if (slider.settings.pager) { appendPager(); }
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// if any control option is requested, add the controls wrapper
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if (slider.settings.controls || slider.settings.autoControls || slider.settings.pager) { slider.viewport.after(slider.controls.el); }
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// if ticker mode, do not allow a pager
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} else {
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slider.settings.pager = false;
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}
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loadElements(preloadSelector, start);
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};
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var loadElements = function(selector, callback) {
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var total = selector.find('img:not([src=""]), iframe').length,
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count = 0;
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if (total === 0) {
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callback();
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return;
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}
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selector.find('img:not([src=""]), iframe').each(function() {
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$(this).one('load error', function() {
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if (++count === total) { callback(); }
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}).each(function() {
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if (this.complete) { $(this).trigger('load'); }
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});
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});
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};
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/**
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* Start the slider
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*/
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var start = function() {
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// if infinite loop, prepare additional slides
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if (slider.settings.infiniteLoop && slider.settings.mode !== 'fade' && !slider.settings.ticker) {
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var slice = slider.settings.mode === 'vertical' ? slider.settings.minSlides : slider.settings.maxSlides,
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sliceAppend = slider.children.slice(0, slice).clone(true).addClass('bx-clone'),
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slicePrepend = slider.children.slice(-slice).clone(true).addClass('bx-clone');
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if (slider.settings.ariaHidden) {
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sliceAppend.attr('aria-hidden', true);
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slicePrepend.attr('aria-hidden', true);
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}
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el.append(sliceAppend).prepend(slicePrepend);
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}
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// remove the loading DOM element
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slider.loader.remove();
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// set the left / top position of "el"
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setSlidePosition();
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// if "vertical" mode, always use adaptiveHeight to prevent odd behavior
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if (slider.settings.mode === 'vertical') { slider.settings.adaptiveHeight = true; }
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// set the viewport height
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slider.viewport.height(getViewportHeight());
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// make sure everything is positioned just right (same as a window resize)
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el.redrawSlider();
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// onSliderLoad callback
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slider.settings.onSliderLoad.call(el, slider.active.index);
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// slider has been fully initialized
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slider.initialized = true;
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// bind the resize call to the window
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if (slider.settings.responsive) { $(window).bind('resize', resizeWindow); }
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// if auto is true and has more than 1 page, start the show
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if (slider.settings.auto && slider.settings.autoStart && (getPagerQty() > 1 || slider.settings.autoSlideForOnePage)) { initAuto(); }
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// if ticker is true, start the ticker
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if (slider.settings.ticker) { initTicker(); }
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// if pager is requested, make the appropriate pager link active
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if (slider.settings.pager) { updatePagerActive(slider.settings.startSlide); }
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// check for any updates to the controls (like hideControlOnEnd updates)
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if (slider.settings.controls) { updateDirectionControls(); }
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// if touchEnabled is true, setup the touch events
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if (slider.settings.touchEnabled && !slider.settings.ticker) { initTouch(); }
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// if keyboardEnabled is true, setup the keyboard events
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if (slider.settings.keyboardEnabled && !slider.settings.ticker) {
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$(document).keydown(keyPress);
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}
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};
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/**
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* Returns the calculated height of the viewport, used to determine either adaptiveHeight or the maxHeight value
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*/
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var getViewportHeight = function() {
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var height = 0;
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// first determine which children (slides) should be used in our height calculation
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var children = $();
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// if mode is not "vertical" and adaptiveHeight is false, include all children
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if (slider.settings.mode !== 'vertical' && !slider.settings.adaptiveHeight) {
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children = slider.children;
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} else {
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// if not carousel, return the single active child
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if (!slider.carousel) {
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children = slider.children.eq(slider.active.index);
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// if carousel, return a slice of children
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} else {
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// get the individual slide index
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var currentIndex = slider.settings.moveSlides === 1 ? slider.active.index : slider.active.index * getMoveBy();
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// add the current slide to the children
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children = slider.children.eq(currentIndex);
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// cycle through the remaining "showing" slides
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for (i = 1; i <= slider.settings.maxSlides - 1; i++) {
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// if looped back to the start
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if (currentIndex + i >= slider.children.length) {
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children = children.add(slider.children.eq(i - 1));
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} else {
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children = children.add(slider.children.eq(currentIndex + i));
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}
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}
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}
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}
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// if "vertical" mode, calculate the sum of the heights of the children
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if (slider.settings.mode === 'vertical') {
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children.each(function(index) {
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height += $(this).outerHeight();
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});
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// add user-supplied margins
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if (slider.settings.slideMargin > 0) {
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height += slider.settings.slideMargin * (slider.settings.minSlides - 1);
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}
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// if not "vertical" mode, calculate the max height of the children
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} else {
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height = Math.max.apply(Math, children.map(function() {
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return $(this).outerHeight(false);
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}).get());
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}
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if (slider.viewport.css('box-sizing') === 'border-box') {
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height += parseFloat(slider.viewport.css('padding-top')) + parseFloat(slider.viewport.css('padding-bottom')) +
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parseFloat(slider.viewport.css('border-top-width')) + parseFloat(slider.viewport.css('border-bottom-width'));
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} else if (slider.viewport.css('box-sizing') === 'padding-box') {
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height += parseFloat(slider.viewport.css('padding-top')) + parseFloat(slider.viewport.css('padding-bottom'));
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}
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return height;
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};
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/**
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* Returns the calculated width to be used for the outer wrapper / viewport
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*/
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var getViewportMaxWidth = function() {
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var width = '100%';
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if (slider.settings.slideWidth > 0) {
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if (slider.settings.mode === 'horizontal') {
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width = (slider.settings.maxSlides * slider.settings.slideWidth) + ((slider.settings.maxSlides - 1) * slider.settings.slideMargin);
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} else {
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width = slider.settings.slideWidth;
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}
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}
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return width;
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};
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/**
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* Returns the calculated width to be applied to each slide
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*/
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var getSlideWidth = function() {
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var newElWidth = slider.settings.slideWidth, // start with any user-supplied slide width
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wrapWidth = slider.viewport.width(); // get the current viewport width
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// if slide width was not supplied, or is larger than the viewport use the viewport width
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if (slider.settings.slideWidth === 0 ||
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(slider.settings.slideWidth > wrapWidth && !slider.carousel) ||
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slider.settings.mode === 'vertical') {
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newElWidth = wrapWidth;
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// if carousel, use the thresholds to determine the width
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} else if (slider.settings.maxSlides > 1 && slider.settings.mode === 'horizontal') {
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if (wrapWidth > slider.maxThreshold) {
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return newElWidth;
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} else if (wrapWidth < slider.minThreshold) {
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newElWidth = (wrapWidth - (slider.settings.slideMargin * (slider.settings.minSlides - 1))) / slider.settings.minSlides;
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} else if (slider.settings.shrinkItems) {
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newElWidth = Math.floor((wrapWidth + slider.settings.slideMargin) / (Math.ceil((wrapWidth + slider.settings.slideMargin) / (newElWidth + slider.settings.slideMargin))) - slider.settings.slideMargin);
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}
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}
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return newElWidth;
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};
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/**
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* Returns the number of slides currently visible in the viewport (includes partially visible slides)
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*/
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var getNumberSlidesShowing = function() {
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var slidesShowing = 1,
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childWidth = null;
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if (slider.settings.mode === 'horizontal' && slider.settings.slideWidth > 0) {
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// if viewport is smaller than minThreshold, return minSlides
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if (slider.viewport.width() < slider.minThreshold) {
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slidesShowing = slider.settings.minSlides;
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// if viewport is larger than maxThreshold, return maxSlides
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} else if (slider.viewport.width() > slider.maxThreshold) {
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slidesShowing = slider.settings.maxSlides;
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// if viewport is between min / max thresholds, divide viewport width by first child width
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} else {
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childWidth = slider.children.first().width() + slider.settings.slideMargin;
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slidesShowing = Math.floor((slider.viewport.width() +
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slider.settings.slideMargin) / childWidth);
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}
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// if "vertical" mode, slides showing will always be minSlides
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} else if (slider.settings.mode === 'vertical') {
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slidesShowing = slider.settings.minSlides;
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}
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return slidesShowing;
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};
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/**
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* Returns the number of pages (one full viewport of slides is one "page")
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*/
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var getPagerQty = function() {
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var pagerQty = 0,
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breakPoint = 0,
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counter = 0;
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// if moveSlides is specified by the user
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|
if (slider.settings.moveSlides > 0) {
|
|
if (slider.settings.infiniteLoop) {
|
|
pagerQty = Math.ceil(slider.children.length / getMoveBy());
|
|
} else {
|
|
// when breakpoint goes above children length, counter is the number of pages
|
|
while (breakPoint < slider.children.length) {
|
|
++pagerQty;
|
|
breakPoint = counter + getNumberSlidesShowing();
|
|
counter += slider.settings.moveSlides <= getNumberSlidesShowing() ? slider.settings.moveSlides : getNumberSlidesShowing();
|
|
}
|
|
}
|
|
// if moveSlides is 0 (auto) divide children length by sides showing, then round up
|
|
} else {
|
|
pagerQty = Math.ceil(slider.children.length / getNumberSlidesShowing());
|
|
}
|
|
return pagerQty;
|
|
};
|
|
|
|
/**
|
|
* Returns the number of individual slides by which to shift the slider
|
|
*/
|
|
var getMoveBy = function() {
|
|
// if moveSlides was set by the user and moveSlides is less than number of slides showing
|
|
if (slider.settings.moveSlides > 0 && slider.settings.moveSlides <= getNumberSlidesShowing()) {
|
|
return slider.settings.moveSlides;
|
|
}
|
|
// if moveSlides is 0 (auto)
|
|
return getNumberSlidesShowing();
|
|
};
|
|
|
|
/**
|
|
* Sets the slider's (el) left or top position
|
|
*/
|
|
var setSlidePosition = function() {
|
|
var position, lastChild, lastShowingIndex;
|
|
// if last slide, not infinite loop, and number of children is larger than specified maxSlides
|
|
if (slider.children.length > slider.settings.maxSlides && slider.active.last && !slider.settings.infiniteLoop) {
|
|
if (slider.settings.mode === 'horizontal') {
|
|
// get the last child's position
|
|
lastChild = slider.children.last();
|
|
position = lastChild.position();
|
|
// set the left position
|
|
setPositionProperty(-(position.left - (slider.viewport.width() - lastChild.outerWidth())), 'reset', 0);
|
|
} else if (slider.settings.mode === 'vertical') {
|
|
// get the last showing index's position
|
|
lastShowingIndex = slider.children.length - slider.settings.minSlides;
|
|
position = slider.children.eq(lastShowingIndex).position();
|
|
// set the top position
|
|
setPositionProperty(-position.top, 'reset', 0);
|
|
}
|
|
// if not last slide
|
|
} else {
|
|
// get the position of the first showing slide
|
|
position = slider.children.eq(slider.active.index * getMoveBy()).position();
|
|
// check for last slide
|
|
if (slider.active.index === getPagerQty() - 1) { slider.active.last = true; }
|
|
// set the respective position
|
|
if (position !== undefined) {
|
|
if (slider.settings.mode === 'horizontal') { setPositionProperty(-position.left, 'reset', 0); }
|
|
else if (slider.settings.mode === 'vertical') { setPositionProperty(-position.top, 'reset', 0); }
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Sets the el's animating property position (which in turn will sometimes animate el).
|
|
* If using CSS, sets the transform property. If not using CSS, sets the top / left property.
|
|
*
|
|
* @param value (int)
|
|
* - the animating property's value
|
|
*
|
|
* @param type (string) 'slide', 'reset', 'ticker'
|
|
* - the type of instance for which the function is being
|
|
*
|
|
* @param duration (int)
|
|
* - the amount of time (in ms) the transition should occupy
|
|
*
|
|
* @param params (array) optional
|
|
* - an optional parameter containing any variables that need to be passed in
|
|
*/
|
|
var setPositionProperty = function(value, type, duration, params) {
|
|
var animateObj, propValue;
|
|
// use CSS transform
|
|
if (slider.usingCSS) {
|
|
// determine the translate3d value
|
|
propValue = slider.settings.mode === 'vertical' ? 'translate3d(0, ' + value + 'px, 0)' : 'translate3d(' + value + 'px, 0, 0)';
|
|
// add the CSS transition-duration
|
|
el.css('-' + slider.cssPrefix + '-transition-duration', duration / 1000 + 's');
|
|
if (type === 'slide') {
|
|
// set the property value
|
|
el.css(slider.animProp, propValue);
|
|
if (duration !== 0) {
|
|
// bind a callback method - executes when CSS transition completes
|
|
el.bind('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd', function(e) {
|
|
//make sure it's the correct one
|
|
if (!$(e.target).is(el)) { return; }
|
|
// unbind the callback
|
|
el.unbind('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd');
|
|
updateAfterSlideTransition();
|
|
});
|
|
} else { //duration = 0
|
|
updateAfterSlideTransition();
|
|
}
|
|
} else if (type === 'reset') {
|
|
el.css(slider.animProp, propValue);
|
|
} else if (type === 'ticker') {
|
|
// make the transition use 'linear'
|
|
el.css('-' + slider.cssPrefix + '-transition-timing-function', 'linear');
|
|
el.css(slider.animProp, propValue);
|
|
if (duration !== 0) {
|
|
el.bind('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd', function(e) {
|
|
//make sure it's the correct one
|
|
if (!$(e.target).is(el)) { return; }
|
|
// unbind the callback
|
|
el.unbind('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd');
|
|
// reset the position
|
|
setPositionProperty(params.resetValue, 'reset', 0);
|
|
// start the loop again
|
|
tickerLoop();
|
|
});
|
|
} else { //duration = 0
|
|
setPositionProperty(params.resetValue, 'reset', 0);
|
|
tickerLoop();
|
|
}
|
|
}
|
|
// use JS animate
|
|
} else {
|
|
animateObj = {};
|
|
animateObj[slider.animProp] = value;
|
|
if (type === 'slide') {
|
|
el.animate(animateObj, duration, slider.settings.easing, function() {
|
|
updateAfterSlideTransition();
|
|
});
|
|
} else if (type === 'reset') {
|
|
el.css(slider.animProp, value);
|
|
} else if (type === 'ticker') {
|
|
el.animate(animateObj, duration, 'linear', function() {
|
|
setPositionProperty(params.resetValue, 'reset', 0);
|
|
// run the recursive loop after animation
|
|
tickerLoop();
|
|
});
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Populates the pager with proper amount of pages
|
|
*/
|
|
var populatePager = function() {
|
|
var pagerHtml = '',
|
|
linkContent = '',
|
|
pagerQty = getPagerQty();
|
|
// loop through each pager item
|
|
for (var i = 0; i < pagerQty; i++) {
|
|
linkContent = '';
|
|
// if a buildPager function is supplied, use it to get pager link value, else use index + 1
|
|
if (slider.settings.buildPager && $.isFunction(slider.settings.buildPager) || slider.settings.pagerCustom) {
|
|
linkContent = slider.settings.buildPager(i);
|
|
slider.pagerEl.addClass('bx-custom-pager');
|
|
} else {
|
|
linkContent = i + 1;
|
|
slider.pagerEl.addClass('bx-default-pager');
|
|
}
|
|
// var linkContent = slider.settings.buildPager && $.isFunction(slider.settings.buildPager) ? slider.settings.buildPager(i) : i + 1;
|
|
// add the markup to the string
|
|
pagerHtml += '<div class="bx-pager-item"><a href="" data-slide-index="' + i + '" class="bx-pager-link">' + linkContent + '</a></div>';
|
|
}
|
|
// populate the pager element with pager links
|
|
slider.pagerEl.html(pagerHtml);
|
|
};
|
|
|
|
/**
|
|
* Appends the pager to the controls element
|
|
*/
|
|
var appendPager = function() {
|
|
if (!slider.settings.pagerCustom) {
|
|
// create the pager DOM element
|
|
slider.pagerEl = $('<div class="bx-pager" />');
|
|
// if a pager selector was supplied, populate it with the pager
|
|
if (slider.settings.pagerSelector) {
|
|
$(slider.settings.pagerSelector).html(slider.pagerEl);
|
|
// if no pager selector was supplied, add it after the wrapper
|
|
} else {
|
|
slider.controls.el.addClass('bx-has-pager').append(slider.pagerEl);
|
|
}
|
|
// populate the pager
|
|
populatePager();
|
|
} else {
|
|
slider.pagerEl = $(slider.settings.pagerCustom);
|
|
}
|
|
// assign the pager click binding
|
|
slider.pagerEl.on('click touchend', 'a', clickPagerBind);
|
|
};
|
|
|
|
/**
|
|
* Appends prev / next controls to the controls element
|
|
*/
|
|
var appendControls = function() {
|
|
slider.controls.next = $('<a class="bx-next" href="">' + slider.settings.nextText + '</a>');
|
|
slider.controls.prev = $('<a class="bx-prev" href="">' + slider.settings.prevText + '</a>');
|
|
// bind click actions to the controls
|
|
slider.controls.next.bind('click touchend', clickNextBind);
|
|
slider.controls.prev.bind('click touchend', clickPrevBind);
|
|
// if nextSelector was supplied, populate it
|
|
if (slider.settings.nextSelector) {
|
|
$(slider.settings.nextSelector).append(slider.controls.next);
|
|
}
|
|
// if prevSelector was supplied, populate it
|
|
if (slider.settings.prevSelector) {
|
|
$(slider.settings.prevSelector).append(slider.controls.prev);
|
|
}
|
|
// if no custom selectors were supplied
|
|
if (!slider.settings.nextSelector && !slider.settings.prevSelector) {
|
|
// add the controls to the DOM
|
|
slider.controls.directionEl = $('<div class="bx-controls-direction" />');
|
|
// add the control elements to the directionEl
|
|
slider.controls.directionEl.append(slider.controls.prev).append(slider.controls.next);
|
|
// slider.viewport.append(slider.controls.directionEl);
|
|
slider.controls.el.addClass('bx-has-controls-direction').append(slider.controls.directionEl);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Appends start / stop auto controls to the controls element
|
|
*/
|
|
var appendControlsAuto = function() {
|
|
slider.controls.start = $('<div class="bx-controls-auto-item"><a class="bx-start" href="">' + slider.settings.startText + '</a></div>');
|
|
slider.controls.stop = $('<div class="bx-controls-auto-item"><a class="bx-stop" href="">' + slider.settings.stopText + '</a></div>');
|
|
// add the controls to the DOM
|
|
slider.controls.autoEl = $('<div class="bx-controls-auto" />');
|
|
// bind click actions to the controls
|
|
slider.controls.autoEl.on('click', '.bx-start', clickStartBind);
|
|
slider.controls.autoEl.on('click', '.bx-stop', clickStopBind);
|
|
// if autoControlsCombine, insert only the "start" control
|
|
if (slider.settings.autoControlsCombine) {
|
|
slider.controls.autoEl.append(slider.controls.start);
|
|
// if autoControlsCombine is false, insert both controls
|
|
} else {
|
|
slider.controls.autoEl.append(slider.controls.start).append(slider.controls.stop);
|
|
}
|
|
// if auto controls selector was supplied, populate it with the controls
|
|
if (slider.settings.autoControlsSelector) {
|
|
$(slider.settings.autoControlsSelector).html(slider.controls.autoEl);
|
|
// if auto controls selector was not supplied, add it after the wrapper
|
|
} else {
|
|
slider.controls.el.addClass('bx-has-controls-auto').append(slider.controls.autoEl);
|
|
}
|
|
// update the auto controls
|
|
updateAutoControls(slider.settings.autoStart ? 'stop' : 'start');
|
|
};
|
|
|
|
/**
|
|
* Appends image captions to the DOM
|
|
*/
|
|
var appendCaptions = function() {
|
|
// cycle through each child
|
|
slider.children.each(function(index) {
|
|
// get the image title attribute
|
|
var title = $(this).find('img:first').attr('title');
|
|
// append the caption
|
|
if (title !== undefined && ('' + title).length) {
|
|
$(this).append('<div class="bx-caption"><span>' + title + '</span></div>');
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Click next binding
|
|
*
|
|
* @param e (event)
|
|
* - DOM event object
|
|
*/
|
|
var clickNextBind = function(e) {
|
|
e.preventDefault();
|
|
if (slider.controls.el.hasClass('disabled')) { return; }
|
|
// if auto show is running, stop it
|
|
if (slider.settings.auto && slider.settings.stopAutoOnClick) { el.stopAuto(); }
|
|
el.goToNextSlide();
|
|
};
|
|
|
|
/**
|
|
* Click prev binding
|
|
*
|
|
* @param e (event)
|
|
* - DOM event object
|
|
*/
|
|
var clickPrevBind = function(e) {
|
|
e.preventDefault();
|
|
if (slider.controls.el.hasClass('disabled')) { return; }
|
|
// if auto show is running, stop it
|
|
if (slider.settings.auto && slider.settings.stopAutoOnClick) { el.stopAuto(); }
|
|
el.goToPrevSlide();
|
|
};
|
|
|
|
/**
|
|
* Click start binding
|
|
*
|
|
* @param e (event)
|
|
* - DOM event object
|
|
*/
|
|
var clickStartBind = function(e) {
|
|
el.startAuto();
|
|
e.preventDefault();
|
|
};
|
|
|
|
/**
|
|
* Click stop binding
|
|
*
|
|
* @param e (event)
|
|
* - DOM event object
|
|
*/
|
|
var clickStopBind = function(e) {
|
|
el.stopAuto();
|
|
e.preventDefault();
|
|
};
|
|
|
|
/**
|
|
* Click pager binding
|
|
*
|
|
* @param e (event)
|
|
* - DOM event object
|
|
*/
|
|
var clickPagerBind = function(e) {
|
|
var pagerLink, pagerIndex;
|
|
e.preventDefault();
|
|
if (slider.controls.el.hasClass('disabled')) {
|
|
return;
|
|
}
|
|
// if auto show is running, stop it
|
|
if (slider.settings.auto && slider.settings.stopAutoOnClick) { el.stopAuto(); }
|
|
pagerLink = $(e.currentTarget);
|
|
if (pagerLink.attr('data-slide-index') !== undefined) {
|
|
pagerIndex = parseInt(pagerLink.attr('data-slide-index'));
|
|
// if clicked pager link is not active, continue with the goToSlide call
|
|
if (pagerIndex !== slider.active.index) { el.goToSlide(pagerIndex); }
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Updates the pager links with an active class
|
|
*
|
|
* @param slideIndex (int)
|
|
* - index of slide to make active
|
|
*/
|
|
var updatePagerActive = function(slideIndex) {
|
|
// if "short" pager type
|
|
var len = slider.children.length; // nb of children
|
|
if (slider.settings.pagerType === 'short') {
|
|
if (slider.settings.maxSlides > 1) {
|
|
len = Math.ceil(slider.children.length / slider.settings.maxSlides);
|
|
}
|
|
slider.pagerEl.html((slideIndex + 1) + slider.settings.pagerShortSeparator + len);
|
|
return;
|
|
}
|
|
// remove all pager active classes
|
|
slider.pagerEl.find('a').removeClass('active');
|
|
// apply the active class for all pagers
|
|
slider.pagerEl.each(function(i, el) { $(el).find('a').eq(slideIndex).addClass('active'); });
|
|
};
|
|
|
|
/**
|
|
* Performs needed actions after a slide transition
|
|
*/
|
|
var updateAfterSlideTransition = function() {
|
|
// if infinite loop is true
|
|
if (slider.settings.infiniteLoop) {
|
|
var position = '';
|
|
// first slide
|
|
if (slider.active.index === 0) {
|
|
// set the new position
|
|
position = slider.children.eq(0).position();
|
|
// carousel, last slide
|
|
} else if (slider.active.index === getPagerQty() - 1 && slider.carousel) {
|
|
position = slider.children.eq((getPagerQty() - 1) * getMoveBy()).position();
|
|
// last slide
|
|
} else if (slider.active.index === slider.children.length - 1) {
|
|
position = slider.children.eq(slider.children.length - 1).position();
|
|
}
|
|
if (position) {
|
|
if (slider.settings.mode === 'horizontal') { setPositionProperty(-position.left, 'reset', 0); }
|
|
else if (slider.settings.mode === 'vertical') { setPositionProperty(-position.top, 'reset', 0); }
|
|
}
|
|
}
|
|
// declare that the transition is complete
|
|
slider.working = false;
|
|
// onSlideAfter callback
|
|
slider.settings.onSlideAfter.call(el, slider.children.eq(slider.active.index), slider.oldIndex, slider.active.index);
|
|
};
|
|
|
|
/**
|
|
* Updates the auto controls state (either active, or combined switch)
|
|
*
|
|
* @param state (string) "start", "stop"
|
|
* - the new state of the auto show
|
|
*/
|
|
var updateAutoControls = function(state) {
|
|
// if autoControlsCombine is true, replace the current control with the new state
|
|
if (slider.settings.autoControlsCombine) {
|
|
slider.controls.autoEl.html(slider.controls[state]);
|
|
// if autoControlsCombine is false, apply the "active" class to the appropriate control
|
|
} else {
|
|
slider.controls.autoEl.find('a').removeClass('active');
|
|
slider.controls.autoEl.find('a:not(.bx-' + state + ')').addClass('active');
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Updates the direction controls (checks if either should be hidden)
|
|
*/
|
|
var updateDirectionControls = function() {
|
|
if (getPagerQty() === 1) {
|
|
slider.controls.prev.addClass('disabled');
|
|
slider.controls.next.addClass('disabled');
|
|
} else if (!slider.settings.infiniteLoop && slider.settings.hideControlOnEnd) {
|
|
// if first slide
|
|
if (slider.active.index === 0) {
|
|
slider.controls.prev.addClass('disabled');
|
|
slider.controls.next.removeClass('disabled');
|
|
// if last slide
|
|
} else if (slider.active.index === getPagerQty() - 1) {
|
|
slider.controls.next.addClass('disabled');
|
|
slider.controls.prev.removeClass('disabled');
|
|
// if any slide in the middle
|
|
} else {
|
|
slider.controls.prev.removeClass('disabled');
|
|
slider.controls.next.removeClass('disabled');
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Initializes the auto process
|
|
*/
|
|
var initAuto = function() {
|
|
// if autoDelay was supplied, launch the auto show using a setTimeout() call
|
|
if (slider.settings.autoDelay > 0) {
|
|
var timeout = setTimeout(el.startAuto, slider.settings.autoDelay);
|
|
// if autoDelay was not supplied, start the auto show normally
|
|
} else {
|
|
el.startAuto();
|
|
|
|
//add focus and blur events to ensure its running if timeout gets paused
|
|
$(window).focus(function() {
|
|
el.startAuto();
|
|
}).blur(function() {
|
|
el.stopAuto();
|
|
});
|
|
}
|
|
// if autoHover is requested
|
|
if (slider.settings.autoHover) {
|
|
// on el hover
|
|
el.hover(function() {
|
|
// if the auto show is currently playing (has an active interval)
|
|
if (slider.interval) {
|
|
// stop the auto show and pass true argument which will prevent control update
|
|
el.stopAuto(true);
|
|
// create a new autoPaused value which will be used by the relative "mouseout" event
|
|
slider.autoPaused = true;
|
|
}
|
|
}, function() {
|
|
// if the autoPaused value was created be the prior "mouseover" event
|
|
if (slider.autoPaused) {
|
|
// start the auto show and pass true argument which will prevent control update
|
|
el.startAuto(true);
|
|
// reset the autoPaused value
|
|
slider.autoPaused = null;
|
|
}
|
|
});
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Initializes the ticker process
|
|
*/
|
|
var initTicker = function() {
|
|
var startPosition = 0,
|
|
position, transform, value, idx, ratio, property, newSpeed, totalDimens;
|
|
// if autoDirection is "next", append a clone of the entire slider
|
|
if (slider.settings.autoDirection === 'next') {
|
|
el.append(slider.children.clone().addClass('bx-clone'));
|
|
// if autoDirection is "prev", prepend a clone of the entire slider, and set the left position
|
|
} else {
|
|
el.prepend(slider.children.clone().addClass('bx-clone'));
|
|
position = slider.children.first().position();
|
|
startPosition = slider.settings.mode === 'horizontal' ? -position.left : -position.top;
|
|
}
|
|
setPositionProperty(startPosition, 'reset', 0);
|
|
// do not allow controls in ticker mode
|
|
slider.settings.pager = false;
|
|
slider.settings.controls = false;
|
|
slider.settings.autoControls = false;
|
|
// if autoHover is requested
|
|
if (slider.settings.tickerHover) {
|
|
if (slider.usingCSS) {
|
|
idx = slider.settings.mode === 'horizontal' ? 4 : 5;
|
|
slider.viewport.hover(function() {
|
|
transform = el.css('-' + slider.cssPrefix + '-transform');
|
|
value = parseFloat(transform.split(',')[idx]);
|
|
setPositionProperty(value, 'reset', 0);
|
|
}, function() {
|
|
totalDimens = 0;
|
|
slider.children.each(function(index) {
|
|
totalDimens += slider.settings.mode === 'horizontal' ? $(this).outerWidth(true) : $(this).outerHeight(true);
|
|
});
|
|
// calculate the speed ratio (used to determine the new speed to finish the paused animation)
|
|
ratio = slider.settings.speed / totalDimens;
|
|
// determine which property to use
|
|
property = slider.settings.mode === 'horizontal' ? 'left' : 'top';
|
|
// calculate the new speed
|
|
newSpeed = ratio * (totalDimens - (Math.abs(parseInt(value))));
|
|
tickerLoop(newSpeed);
|
|
});
|
|
} else {
|
|
// on el hover
|
|
slider.viewport.hover(function() {
|
|
el.stop();
|
|
}, function() {
|
|
// calculate the total width of children (used to calculate the speed ratio)
|
|
totalDimens = 0;
|
|
slider.children.each(function(index) {
|
|
totalDimens += slider.settings.mode === 'horizontal' ? $(this).outerWidth(true) : $(this).outerHeight(true);
|
|
});
|
|
// calculate the speed ratio (used to determine the new speed to finish the paused animation)
|
|
ratio = slider.settings.speed / totalDimens;
|
|
// determine which property to use
|
|
property = slider.settings.mode === 'horizontal' ? 'left' : 'top';
|
|
// calculate the new speed
|
|
newSpeed = ratio * (totalDimens - (Math.abs(parseInt(el.css(property)))));
|
|
tickerLoop(newSpeed);
|
|
});
|
|
}
|
|
}
|
|
// start the ticker loop
|
|
tickerLoop();
|
|
};
|
|
|
|
/**
|
|
* Runs a continuous loop, news ticker-style
|
|
*/
|
|
var tickerLoop = function(resumeSpeed) {
|
|
var speed = resumeSpeed ? resumeSpeed : slider.settings.speed,
|
|
position = {left: 0, top: 0},
|
|
reset = {left: 0, top: 0},
|
|
animateProperty, resetValue, params;
|
|
|
|
// if "next" animate left position to last child, then reset left to 0
|
|
if (slider.settings.autoDirection === 'next') {
|
|
position = el.find('.bx-clone').first().position();
|
|
// if "prev" animate left position to 0, then reset left to first non-clone child
|
|
} else {
|
|
reset = slider.children.first().position();
|
|
}
|
|
animateProperty = slider.settings.mode === 'horizontal' ? -position.left : -position.top;
|
|
resetValue = slider.settings.mode === 'horizontal' ? -reset.left : -reset.top;
|
|
params = {resetValue: resetValue};
|
|
setPositionProperty(animateProperty, 'ticker', speed, params);
|
|
};
|
|
|
|
/**
|
|
* Check if el is on screen
|
|
*/
|
|
var isOnScreen = function(el) {
|
|
var win = $(window),
|
|
viewport = {
|
|
top: win.scrollTop(),
|
|
left: win.scrollLeft()
|
|
},
|
|
bounds = el.offset();
|
|
|
|
viewport.right = viewport.left + win.width();
|
|
viewport.bottom = viewport.top + win.height();
|
|
bounds.right = bounds.left + el.outerWidth();
|
|
bounds.bottom = bounds.top + el.outerHeight();
|
|
|
|
return (!(viewport.right < bounds.left || viewport.left > bounds.right || viewport.bottom < bounds.top || viewport.top > bounds.bottom));
|
|
};
|
|
|
|
/**
|
|
* Initializes keyboard events
|
|
*/
|
|
var keyPress = function(e) {
|
|
var activeElementTag = document.activeElement.tagName.toLowerCase(),
|
|
tagFilters = 'input|textarea',
|
|
p = new RegExp(activeElementTag,['i']),
|
|
result = p.exec(tagFilters);
|
|
|
|
if (result == null && isOnScreen(el)) {
|
|
if (e.keyCode === 39) {
|
|
clickNextBind(e);
|
|
return false;
|
|
} else if (e.keyCode === 37) {
|
|
clickPrevBind(e);
|
|
return false;
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Initializes touch events
|
|
*/
|
|
var initTouch = function() {
|
|
// initialize object to contain all touch values
|
|
slider.touch = {
|
|
start: {x: 0, y: 0},
|
|
end: {x: 0, y: 0}
|
|
};
|
|
slider.viewport.bind('touchstart MSPointerDown pointerdown', onTouchStart);
|
|
|
|
//for browsers that have implemented pointer events and fire a click after
|
|
//every pointerup regardless of whether pointerup is on same screen location as pointerdown or not
|
|
slider.viewport.on('click', '.bxslider a', function(e) {
|
|
if (slider.viewport.hasClass('click-disabled')) {
|
|
e.preventDefault();
|
|
slider.viewport.removeClass('click-disabled');
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Event handler for "touchstart"
|
|
*
|
|
* @param e (event)
|
|
* - DOM event object
|
|
*/
|
|
var onTouchStart = function(e) {
|
|
//disable slider controls while user is interacting with slides to avoid slider freeze that happens on touch devices when a slide swipe happens immediately after interacting with slider controls
|
|
slider.controls.el.addClass('disabled');
|
|
|
|
if (slider.working) {
|
|
e.preventDefault();
|
|
slider.controls.el.removeClass('disabled');
|
|
} else {
|
|
// record the original position when touch starts
|
|
slider.touch.originalPos = el.position();
|
|
var orig = e.originalEvent,
|
|
touchPoints = (typeof orig.changedTouches !== 'undefined') ? orig.changedTouches : [orig];
|
|
// record the starting touch x, y coordinates
|
|
slider.touch.start.x = touchPoints[0].pageX;
|
|
slider.touch.start.y = touchPoints[0].pageY;
|
|
|
|
if (slider.viewport.get(0).setPointerCapture) {
|
|
slider.pointerId = orig.pointerId;
|
|
slider.viewport.get(0).setPointerCapture(slider.pointerId);
|
|
}
|
|
// bind a "touchmove" event to the viewport
|
|
slider.viewport.bind('touchmove MSPointerMove pointermove', onTouchMove);
|
|
// bind a "touchend" event to the viewport
|
|
slider.viewport.bind('touchend MSPointerUp pointerup', onTouchEnd);
|
|
slider.viewport.bind('MSPointerCancel pointercancel', onPointerCancel);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Cancel Pointer for Windows Phone
|
|
*
|
|
* @param e (event)
|
|
* - DOM event object
|
|
*/
|
|
var onPointerCancel = function(e) {
|
|
/* onPointerCancel handler is needed to deal with situations when a touchend
|
|
doesn't fire after a touchstart (this happens on windows phones only) */
|
|
setPositionProperty(slider.touch.originalPos.left, 'reset', 0);
|
|
|
|
//remove handlers
|
|
slider.controls.el.removeClass('disabled');
|
|
slider.viewport.unbind('MSPointerCancel pointercancel', onPointerCancel);
|
|
slider.viewport.unbind('touchmove MSPointerMove pointermove', onTouchMove);
|
|
slider.viewport.unbind('touchend MSPointerUp pointerup', onTouchEnd);
|
|
if (slider.viewport.get(0).releasePointerCapture) {
|
|
slider.viewport.get(0).releasePointerCapture(slider.pointerId);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Event handler for "touchmove"
|
|
*
|
|
* @param e (event)
|
|
* - DOM event object
|
|
*/
|
|
var onTouchMove = function(e) {
|
|
var orig = e.originalEvent,
|
|
touchPoints = (typeof orig.changedTouches !== 'undefined') ? orig.changedTouches : [orig],
|
|
// if scrolling on y axis, do not prevent default
|
|
xMovement = Math.abs(touchPoints[0].pageX - slider.touch.start.x),
|
|
yMovement = Math.abs(touchPoints[0].pageY - slider.touch.start.y),
|
|
value = 0,
|
|
change = 0;
|
|
|
|
// x axis swipe
|
|
if ((xMovement * 3) > yMovement && slider.settings.preventDefaultSwipeX) {
|
|
e.preventDefault();
|
|
// y axis swipe
|
|
} else if ((yMovement * 3) > xMovement && slider.settings.preventDefaultSwipeY) {
|
|
e.preventDefault();
|
|
}
|
|
if (slider.settings.mode !== 'fade' && slider.settings.oneToOneTouch) {
|
|
// if horizontal, drag along x axis
|
|
if (slider.settings.mode === 'horizontal') {
|
|
change = touchPoints[0].pageX - slider.touch.start.x;
|
|
value = slider.touch.originalPos.left + change;
|
|
// if vertical, drag along y axis
|
|
} else {
|
|
change = touchPoints[0].pageY - slider.touch.start.y;
|
|
value = slider.touch.originalPos.top + change;
|
|
}
|
|
setPositionProperty(value, 'reset', 0);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Event handler for "touchend"
|
|
*
|
|
* @param e (event)
|
|
* - DOM event object
|
|
*/
|
|
var onTouchEnd = function(e) {
|
|
slider.viewport.unbind('touchmove MSPointerMove pointermove', onTouchMove);
|
|
//enable slider controls as soon as user stops interacing with slides
|
|
slider.controls.el.removeClass('disabled');
|
|
var orig = e.originalEvent,
|
|
touchPoints = (typeof orig.changedTouches !== 'undefined') ? orig.changedTouches : [orig],
|
|
value = 0,
|
|
distance = 0;
|
|
// record end x, y positions
|
|
slider.touch.end.x = touchPoints[0].pageX;
|
|
slider.touch.end.y = touchPoints[0].pageY;
|
|
// if fade mode, check if absolute x distance clears the threshold
|
|
if (slider.settings.mode === 'fade') {
|
|
distance = Math.abs(slider.touch.start.x - slider.touch.end.x);
|
|
if (distance >= slider.settings.swipeThreshold) {
|
|
if (slider.touch.start.x > slider.touch.end.x) {
|
|
el.goToNextSlide();
|
|
} else {
|
|
el.goToPrevSlide();
|
|
}
|
|
el.stopAuto();
|
|
}
|
|
// not fade mode
|
|
} else {
|
|
// calculate distance and el's animate property
|
|
if (slider.settings.mode === 'horizontal') {
|
|
distance = slider.touch.end.x - slider.touch.start.x;
|
|
value = slider.touch.originalPos.left;
|
|
} else {
|
|
distance = slider.touch.end.y - slider.touch.start.y;
|
|
value = slider.touch.originalPos.top;
|
|
}
|
|
// if not infinite loop and first / last slide, do not attempt a slide transition
|
|
if (!slider.settings.infiniteLoop && ((slider.active.index === 0 && distance > 0) || (slider.active.last && distance < 0))) {
|
|
setPositionProperty(value, 'reset', 200);
|
|
} else {
|
|
// check if distance clears threshold
|
|
if (Math.abs(distance) >= slider.settings.swipeThreshold) {
|
|
if (distance < 0) {
|
|
el.goToNextSlide();
|
|
} else {
|
|
el.goToPrevSlide();
|
|
}
|
|
el.stopAuto();
|
|
} else {
|
|
// el.animate(property, 200);
|
|
setPositionProperty(value, 'reset', 200);
|
|
}
|
|
}
|
|
}
|
|
slider.viewport.unbind('touchend MSPointerUp pointerup', onTouchEnd);
|
|
if (slider.viewport.get(0).releasePointerCapture) {
|
|
slider.viewport.get(0).releasePointerCapture(slider.pointerId);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Window resize event callback
|
|
*/
|
|
var resizeWindow = function(e) {
|
|
// don't do anything if slider isn't initialized.
|
|
if (!slider.initialized) { return; }
|
|
// Delay if slider working.
|
|
if (slider.working) {
|
|
window.setTimeout(resizeWindow, 10);
|
|
} else {
|
|
// get the new window dimens (again, thank you IE)
|
|
var windowWidthNew = $(window).width(),
|
|
windowHeightNew = $(window).height();
|
|
// make sure that it is a true window resize
|
|
// *we must check this because our dinosaur friend IE fires a window resize event when certain DOM elements
|
|
// are resized. Can you just die already?*
|
|
if (windowWidth !== windowWidthNew || windowHeight !== windowHeightNew) {
|
|
// set the new window dimens
|
|
windowWidth = windowWidthNew;
|
|
windowHeight = windowHeightNew;
|
|
// update all dynamic elements
|
|
el.redrawSlider();
|
|
// Call user resize handler
|
|
slider.settings.onSliderResize.call(el, slider.active.index);
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Adds an aria-hidden=true attribute to each element
|
|
*
|
|
* @param startVisibleIndex (int)
|
|
* - the first visible element's index
|
|
*/
|
|
var applyAriaHiddenAttributes = function(startVisibleIndex) {
|
|
var numberOfSlidesShowing = getNumberSlidesShowing();
|
|
// only apply attributes if the setting is enabled and not in ticker mode
|
|
if (slider.settings.ariaHidden && !slider.settings.ticker) {
|
|
// add aria-hidden=true to all elements
|
|
slider.children.attr('aria-hidden', 'true');
|
|
// get the visible elements and change to aria-hidden=false
|
|
slider.children.slice(startVisibleIndex, startVisibleIndex + numberOfSlidesShowing).attr('aria-hidden', 'false');
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Returns index according to present page range
|
|
*
|
|
* @param slideOndex (int)
|
|
* - the desired slide index
|
|
*/
|
|
var setSlideIndex = function(slideIndex) {
|
|
if (slideIndex < 0) {
|
|
if (slider.settings.infiniteLoop) {
|
|
return getPagerQty() - 1;
|
|
}else {
|
|
//we don't go to undefined slides
|
|
return slider.active.index;
|
|
}
|
|
// if slideIndex is greater than children length, set active index to 0 (this happens during infinite loop)
|
|
} else if (slideIndex >= getPagerQty()) {
|
|
if (slider.settings.infiniteLoop) {
|
|
return 0;
|
|
} else {
|
|
//we don't move to undefined pages
|
|
return slider.active.index;
|
|
}
|
|
// set active index to requested slide
|
|
} else {
|
|
return slideIndex;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* ===================================================================================
|
|
* = PUBLIC FUNCTIONS
|
|
* ===================================================================================
|
|
*/
|
|
|
|
/**
|
|
* Performs slide transition to the specified slide
|
|
*
|
|
* @param slideIndex (int)
|
|
* - the destination slide's index (zero-based)
|
|
*
|
|
* @param direction (string)
|
|
* - INTERNAL USE ONLY - the direction of travel ("prev" / "next")
|
|
*/
|
|
el.goToSlide = function(slideIndex, direction) {
|
|
// onSlideBefore, onSlideNext, onSlidePrev callbacks
|
|
// Allow transition canceling based on returned value
|
|
var performTransition = true,
|
|
moveBy = 0,
|
|
position = {left: 0, top: 0},
|
|
lastChild = null,
|
|
lastShowingIndex, eq, value, requestEl;
|
|
// store the old index
|
|
slider.oldIndex = slider.active.index;
|
|
//set new index
|
|
slider.active.index = setSlideIndex(slideIndex);
|
|
|
|
// if plugin is currently in motion, ignore request
|
|
if (slider.working || slider.active.index === slider.oldIndex) { return; }
|
|
// declare that plugin is in motion
|
|
slider.working = true;
|
|
|
|
performTransition = slider.settings.onSlideBefore.call(el, slider.children.eq(slider.active.index), slider.oldIndex, slider.active.index);
|
|
|
|
// If transitions canceled, reset and return
|
|
if (typeof (performTransition) !== 'undefined' && !performTransition) {
|
|
slider.active.index = slider.oldIndex; // restore old index
|
|
slider.working = false; // is not in motion
|
|
return;
|
|
}
|
|
|
|
if (direction === 'next') {
|
|
// Prevent canceling in future functions or lack there-of from negating previous commands to cancel
|
|
if (!slider.settings.onSlideNext.call(el, slider.children.eq(slider.active.index), slider.oldIndex, slider.active.index)) {
|
|
performTransition = false;
|
|
}
|
|
} else if (direction === 'prev') {
|
|
// Prevent canceling in future functions or lack there-of from negating previous commands to cancel
|
|
if (!slider.settings.onSlidePrev.call(el, slider.children.eq(slider.active.index), slider.oldIndex, slider.active.index)) {
|
|
performTransition = false;
|
|
}
|
|
}
|
|
|
|
// check if last slide
|
|
slider.active.last = slider.active.index >= getPagerQty() - 1;
|
|
// update the pager with active class
|
|
if (slider.settings.pager || slider.settings.pagerCustom) { updatePagerActive(slider.active.index); }
|
|
// // check for direction control update
|
|
if (slider.settings.controls) { updateDirectionControls(); }
|
|
// if slider is set to mode: "fade"
|
|
if (slider.settings.mode === 'fade') {
|
|
// if adaptiveHeight is true and next height is different from current height, animate to the new height
|
|
if (slider.settings.adaptiveHeight && slider.viewport.height() !== getViewportHeight()) {
|
|
slider.viewport.animate({height: getViewportHeight()}, slider.settings.adaptiveHeightSpeed);
|
|
}
|
|
// fade out the visible child and reset its z-index value
|
|
slider.children.filter(':visible').fadeOut(slider.settings.speed).css({zIndex: 0});
|
|
// fade in the newly requested slide
|
|
slider.children.eq(slider.active.index).css('zIndex', slider.settings.slideZIndex + 1).fadeIn(slider.settings.speed, function() {
|
|
$(this).css('zIndex', slider.settings.slideZIndex);
|
|
updateAfterSlideTransition();
|
|
});
|
|
// slider mode is not "fade"
|
|
} else {
|
|
// if adaptiveHeight is true and next height is different from current height, animate to the new height
|
|
if (slider.settings.adaptiveHeight && slider.viewport.height() !== getViewportHeight()) {
|
|
slider.viewport.animate({height: getViewportHeight()}, slider.settings.adaptiveHeightSpeed);
|
|
}
|
|
// if carousel and not infinite loop
|
|
if (!slider.settings.infiniteLoop && slider.carousel && slider.active.last) {
|
|
if (slider.settings.mode === 'horizontal') {
|
|
// get the last child position
|
|
lastChild = slider.children.eq(slider.children.length - 1);
|
|
position = lastChild.position();
|
|
// calculate the position of the last slide
|
|
moveBy = slider.viewport.width() - lastChild.outerWidth();
|
|
} else {
|
|
// get last showing index position
|
|
lastShowingIndex = slider.children.length - slider.settings.minSlides;
|
|
position = slider.children.eq(lastShowingIndex).position();
|
|
}
|
|
// horizontal carousel, going previous while on first slide (infiniteLoop mode)
|
|
} else if (slider.carousel && slider.active.last && direction === 'prev') {
|
|
// get the last child position
|
|
eq = slider.settings.moveSlides === 1 ? slider.settings.maxSlides - getMoveBy() : ((getPagerQty() - 1) * getMoveBy()) - (slider.children.length - slider.settings.maxSlides);
|
|
lastChild = el.children('.bx-clone').eq(eq);
|
|
position = lastChild.position();
|
|
// if infinite loop and "Next" is clicked on the last slide
|
|
} else if (direction === 'next' && slider.active.index === 0) {
|
|
// get the last clone position
|
|
position = el.find('> .bx-clone').eq(slider.settings.maxSlides).position();
|
|
slider.active.last = false;
|
|
// normal non-zero requests
|
|
} else if (slideIndex >= 0) {
|
|
//parseInt is applied to allow floats for slides/page
|
|
requestEl = slideIndex * parseInt(getMoveBy());
|
|
position = slider.children.eq(requestEl).position();
|
|
}
|
|
|
|
/* If the position doesn't exist
|
|
* (e.g. if you destroy the slider on a next click),
|
|
* it doesn't throw an error.
|
|
*/
|
|
if (typeof (position) !== 'undefined') {
|
|
value = slider.settings.mode === 'horizontal' ? -(position.left - moveBy) : -position.top;
|
|
// plugin values to be animated
|
|
setPositionProperty(value, 'slide', slider.settings.speed);
|
|
} else {
|
|
slider.working = false;
|
|
}
|
|
}
|
|
if (slider.settings.ariaHidden) { applyAriaHiddenAttributes(slider.active.index * getMoveBy()); }
|
|
};
|
|
|
|
/**
|
|
* Transitions to the next slide in the show
|
|
*/
|
|
el.goToNextSlide = function() {
|
|
// if infiniteLoop is false and last page is showing, disregard call
|
|
if (!slider.settings.infiniteLoop && slider.active.last) { return; }
|
|
var pagerIndex = parseInt(slider.active.index) + 1;
|
|
el.goToSlide(pagerIndex, 'next');
|
|
};
|
|
|
|
/**
|
|
* Transitions to the prev slide in the show
|
|
*/
|
|
el.goToPrevSlide = function() {
|
|
// if infiniteLoop is false and last page is showing, disregard call
|
|
if (!slider.settings.infiniteLoop && slider.active.index === 0) { return; }
|
|
var pagerIndex = parseInt(slider.active.index) - 1;
|
|
el.goToSlide(pagerIndex, 'prev');
|
|
};
|
|
|
|
/**
|
|
* Starts the auto show
|
|
*
|
|
* @param preventControlUpdate (boolean)
|
|
* - if true, auto controls state will not be updated
|
|
*/
|
|
el.startAuto = function(preventControlUpdate) {
|
|
// if an interval already exists, disregard call
|
|
if (slider.interval) { return; }
|
|
// create an interval
|
|
slider.interval = setInterval(function() {
|
|
if (slider.settings.autoDirection === 'next') {
|
|
el.goToNextSlide();
|
|
} else {
|
|
el.goToPrevSlide();
|
|
}
|
|
}, slider.settings.pause);
|
|
// if auto controls are displayed and preventControlUpdate is not true
|
|
if (slider.settings.autoControls && preventControlUpdate !== true) { updateAutoControls('stop'); }
|
|
};
|
|
|
|
/**
|
|
* Stops the auto show
|
|
*
|
|
* @param preventControlUpdate (boolean)
|
|
* - if true, auto controls state will not be updated
|
|
*/
|
|
el.stopAuto = function(preventControlUpdate) {
|
|
// if no interval exists, disregard call
|
|
if (!slider.interval) { return; }
|
|
// clear the interval
|
|
clearInterval(slider.interval);
|
|
slider.interval = null;
|
|
// if auto controls are displayed and preventControlUpdate is not true
|
|
if (slider.settings.autoControls && preventControlUpdate !== true) { updateAutoControls('start'); }
|
|
};
|
|
|
|
/**
|
|
* Returns current slide index (zero-based)
|
|
*/
|
|
el.getCurrentSlide = function() {
|
|
return slider.active.index;
|
|
};
|
|
|
|
/**
|
|
* Returns current slide element
|
|
*/
|
|
el.getCurrentSlideElement = function() {
|
|
return slider.children.eq(slider.active.index);
|
|
};
|
|
|
|
/**
|
|
* Returns a slide element
|
|
* @param index (int)
|
|
* - The index (zero-based) of the element you want returned.
|
|
*/
|
|
el.getSlideElement = function(index) {
|
|
return slider.children.eq(index);
|
|
};
|
|
|
|
/**
|
|
* Returns number of slides in show
|
|
*/
|
|
el.getSlideCount = function() {
|
|
return slider.children.length;
|
|
};
|
|
|
|
/**
|
|
* Return slider.working variable
|
|
*/
|
|
el.isWorking = function() {
|
|
return slider.working;
|
|
};
|
|
|
|
/**
|
|
* Update all dynamic slider elements
|
|
*/
|
|
el.redrawSlider = function() {
|
|
// resize all children in ratio to new screen size
|
|
slider.children.add(el.find('.bx-clone')).outerWidth(getSlideWidth());
|
|
// adjust the height
|
|
slider.viewport.css('height', getViewportHeight());
|
|
// update the slide position
|
|
if (!slider.settings.ticker) { setSlidePosition(); }
|
|
// if active.last was true before the screen resize, we want
|
|
// to keep it last no matter what screen size we end on
|
|
if (slider.active.last) { slider.active.index = getPagerQty() - 1; }
|
|
// if the active index (page) no longer exists due to the resize, simply set the index as last
|
|
if (slider.active.index >= getPagerQty()) { slider.active.last = true; }
|
|
// if a pager is being displayed and a custom pager is not being used, update it
|
|
if (slider.settings.pager && !slider.settings.pagerCustom) {
|
|
populatePager();
|
|
updatePagerActive(slider.active.index);
|
|
}
|
|
if (slider.settings.ariaHidden) { applyAriaHiddenAttributes(slider.active.index * getMoveBy()); }
|
|
};
|
|
|
|
/**
|
|
* Destroy the current instance of the slider (revert everything back to original state)
|
|
*/
|
|
el.destroySlider = function() {
|
|
// don't do anything if slider has already been destroyed
|
|
if (!slider.initialized) { return; }
|
|
slider.initialized = false;
|
|
$('.bx-clone', this).remove();
|
|
slider.children.each(function() {
|
|
if ($(this).data('origStyle') !== undefined) {
|
|
$(this).attr('style', $(this).data('origStyle'));
|
|
} else {
|
|
$(this).removeAttr('style');
|
|
}
|
|
});
|
|
if ($(this).data('origStyle') !== undefined) {
|
|
this.attr('style', $(this).data('origStyle'));
|
|
} else {
|
|
$(this).removeAttr('style');
|
|
}
|
|
$(this).unwrap().unwrap();
|
|
if (slider.controls.el) { slider.controls.el.remove(); }
|
|
if (slider.controls.next) { slider.controls.next.remove(); }
|
|
if (slider.controls.prev) { slider.controls.prev.remove(); }
|
|
if (slider.pagerEl && slider.settings.controls && !slider.settings.pagerCustom) { slider.pagerEl.remove(); }
|
|
$('.bx-caption', this).remove();
|
|
if (slider.controls.autoEl) { slider.controls.autoEl.remove(); }
|
|
clearInterval(slider.interval);
|
|
if (slider.settings.responsive) { $(window).unbind('resize', resizeWindow); }
|
|
if (slider.settings.keyboardEnabled) { $(document).unbind('keydown', keyPress); }
|
|
//remove self reference in data
|
|
$(this).removeData('bxSlider');
|
|
};
|
|
|
|
/**
|
|
* Reload the slider (revert all DOM changes, and re-initialize)
|
|
*/
|
|
el.reloadSlider = function(settings) {
|
|
if (settings !== undefined) { options = settings; }
|
|
el.destroySlider();
|
|
init();
|
|
//store reference to self in order to access public functions later
|
|
$(el).data('bxSlider', this);
|
|
};
|
|
|
|
init();
|
|
|
|
$(el).data('bxSlider', this);
|
|
|
|
// returns the current jQuery object
|
|
return this;
|
|
};
|
|
|
|
})(jQuery);
|
|
|