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tiny-slider.module.js
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tiny-slider.module.js
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// helper functions
if (!Object.keys) {
Object.keys = function (object) {
var keys = [];
for (var name in object) {
if (Object.prototype.hasOwnProperty.call(object, name)) {
keys.push(name);
}
}
return keys;
};
}
if(!("remove" in Element.prototype)){
Element.prototype.remove = function(){
if(this.parentNode) {
this.parentNode.removeChild(this);
}
};
}
import { raf } from './helpers/raf.js';
import { caf } from './helpers/caf.js';
import { extend } from './helpers/extend.js';
import { checkStorageValue } from './helpers/checkStorageValue.js';
import { setLocalStorage } from './helpers/setLocalStorage.js';
import { getSlideId } from './helpers/getSlideId.js';
import { calc } from './helpers/calc.js';
import { percentageLayout } from './helpers/percentageLayout.js';
import { mediaquerySupport } from './helpers/mediaquerySupport.js';
import { createStyleSheet } from './helpers/createStyleSheet.js';
import { addCSSRule } from './helpers/addCSSRule.js';
import { removeCSSRule } from './helpers/removeCSSRule.js';
import { getCssRulesLength } from './helpers/getCssRulesLength.js';
import { toDegree } from './helpers/toDegree.js';
import { getTouchDirection } from './helpers/getTouchDirection.js';
import { forEach } from './helpers/forEach.js';
import { hasClass } from './helpers/hasClass.js';
import { addClass } from './helpers/addClass.js';
import { removeClass } from './helpers/removeClass.js';
import { hasAttr } from './helpers/hasAttr.js';
import { getAttr } from './helpers/getAttr.js';
import { setAttrs } from './helpers/setAttrs.js';
import { removeAttrs } from './helpers/removeAttrs.js';
import { arrayFromNodeList } from './helpers/arrayFromNodeList.js';
import { hideElement } from './helpers/hideElement.js';
import { showElement } from './helpers/showElement.js';
import { isVisible } from './helpers/isVisible.js';
import { whichProperty } from './helpers/whichProperty.js';
import { has3DTransforms } from './helpers/has3DTransforms.js';
import { getEndProperty } from './helpers/getEndProperty.js';
import { addEvents } from './helpers/addEvents.js';
import { removeEvents } from './helpers/removeEvents.js';
import { Events } from './helpers/events.js';
import { jsTransform } from './helpers/jsTransform.js';
export var tns = function(options) {
options = extend({
container: '.slider',
mode: 'carousel',
axis: 'horizontal',
items: 1,
gutter: 0,
edgePadding: 0,
fixedWidth: false,
autoWidth: false,
viewportMax: false,
slideBy: 1,
center: false,
controls: true,
controlsPosition: 'top',
controlsText: ['prev', 'next'],
controlsContainer: false,
prevButton: false,
nextButton: false,
nav: true,
navPosition: 'top',
navContainer: false,
navAsThumbnails: false,
arrowKeys: false,
speed: 300,
autoplay: false,
autoplayPosition: 'top',
autoplayTimeout: 5000,
autoplayDirection: 'forward',
autoplayText: ['start', 'stop'],
autoplayHoverPause: false,
autoplayButton: false,
autoplayButtonOutput: true,
autoplayResetOnVisibility: true,
animateIn: 'tns-fadeIn',
animateOut: 'tns-fadeOut',
animateNormal: 'tns-normal',
animateDelay: false,
loop: true,
rewind: false,
autoHeight: false,
responsive: false,
lazyload: false,
lazyloadSelector: '.tns-lazy-img',
touch: true,
mouseDrag: false,
swipeAngle: 15,
nested: false,
preventActionWhenRunning: false,
preventScrollOnTouch: false,
freezable: true,
onInit: false,
useLocalStorage: true
}, options || {});
var doc = document,
win = window,
KEYS = {
ENTER: 13,
SPACE: 32,
LEFT: 37,
RIGHT: 39
},
tnsStorage = {},
localStorageAccess = options.useLocalStorage;
if (localStorageAccess) {
// check browser version and local storage access
var browserInfo = navigator.userAgent;
var uid = new Date;
try {
tnsStorage = win.localStorage;
if (tnsStorage) {
tnsStorage.setItem(uid, uid);
localStorageAccess = tnsStorage.getItem(uid) == uid;
tnsStorage.removeItem(uid);
} else {
localStorageAccess = false;
}
if (!localStorageAccess) { tnsStorage = {}; }
} catch(e) {
localStorageAccess = false;
}
if (localStorageAccess) {
// remove storage when browser version changes
if (tnsStorage['tnsApp'] && tnsStorage['tnsApp'] !== browserInfo) {
['tC', 'tPL', 'tMQ', 'tTf', 't3D', 'tTDu', 'tTDe', 'tADu', 'tADe', 'tTE', 'tAE'].forEach(function(item) { tnsStorage.removeItem(item); });
}
// update browserInfo
localStorage['tnsApp'] = browserInfo;
}
}
var CALC = tnsStorage['tC'] ? checkStorageValue(tnsStorage['tC']) : setLocalStorage(tnsStorage, 'tC', calc(), localStorageAccess),
PERCENTAGELAYOUT = tnsStorage['tPL'] ? checkStorageValue(tnsStorage['tPL']) : setLocalStorage(tnsStorage, 'tPL', percentageLayout(), localStorageAccess),
CSSMQ = tnsStorage['tMQ'] ? checkStorageValue(tnsStorage['tMQ']) : setLocalStorage(tnsStorage, 'tMQ', mediaquerySupport(), localStorageAccess),
TRANSFORM = tnsStorage['tTf'] ? checkStorageValue(tnsStorage['tTf']) : setLocalStorage(tnsStorage, 'tTf', whichProperty('transform'), localStorageAccess),
HAS3DTRANSFORMS = tnsStorage['t3D'] ? checkStorageValue(tnsStorage['t3D']) : setLocalStorage(tnsStorage, 't3D', has3DTransforms(TRANSFORM), localStorageAccess),
TRANSITIONDURATION = tnsStorage['tTDu'] ? checkStorageValue(tnsStorage['tTDu']) : setLocalStorage(tnsStorage, 'tTDu', whichProperty('transitionDuration'), localStorageAccess),
TRANSITIONDELAY = tnsStorage['tTDe'] ? checkStorageValue(tnsStorage['tTDe']) : setLocalStorage(tnsStorage, 'tTDe', whichProperty('transitionDelay'), localStorageAccess),
ANIMATIONDURATION = tnsStorage['tADu'] ? checkStorageValue(tnsStorage['tADu']) : setLocalStorage(tnsStorage, 'tADu', whichProperty('animationDuration'), localStorageAccess),
ANIMATIONDELAY = tnsStorage['tADe'] ? checkStorageValue(tnsStorage['tADe']) : setLocalStorage(tnsStorage, 'tADe', whichProperty('animationDelay'), localStorageAccess),
TRANSITIONEND = tnsStorage['tTE'] ? checkStorageValue(tnsStorage['tTE']) : setLocalStorage(tnsStorage, 'tTE', getEndProperty(TRANSITIONDURATION, 'Transition'), localStorageAccess),
ANIMATIONEND = tnsStorage['tAE'] ? checkStorageValue(tnsStorage['tAE']) : setLocalStorage(tnsStorage, 'tAE', getEndProperty(ANIMATIONDURATION, 'Animation'), localStorageAccess);
// get element nodes from selectors
var supportConsoleWarn = win.console && typeof win.console.warn === "function",
tnsList = ['container', 'controlsContainer', 'prevButton', 'nextButton', 'navContainer', 'autoplayButton'],
optionsElements = {};
tnsList.forEach(function(item) {
if (typeof options[item] === 'string') {
var str = options[item],
el = doc.querySelector(str);
optionsElements[item] = str;
if (el && el.nodeName) {
options[item] = el;
} else {
if (supportConsoleWarn) { console.warn('Can\'t find', options[item]); }
return;
}
}
});
// make sure at least 1 slide
if (options.container.children.length < 1) {
if (supportConsoleWarn) { console.warn('No slides found in', options.container); }
return;
}
// update options
var responsive = options.responsive,
nested = options.nested,
carousel = options.mode === 'carousel' ? true : false;
if (responsive) {
// apply responsive[0] to options and remove it
if (0 in responsive) {
options = extend(options, responsive[0]);
delete responsive[0];
}
var responsiveTem = {};
for (var key in responsive) {
var val = responsive[key];
// update responsive
// from: 300: 2
// to:
// 300: {
// items: 2
// }
val = typeof val === 'number' ? {items: val} : val;
responsiveTem[key] = val;
}
responsive = responsiveTem;
responsiveTem = null;
}
// update options
function updateOptions (obj) {
for (var key in obj) {
if (!carousel) {
if (key === 'slideBy') { obj[key] = 'page'; }
if (key === 'edgePadding') { obj[key] = false; }
if (key === 'autoHeight') { obj[key] = false; }
}
// update responsive options
if (key === 'responsive') { updateOptions(obj[key]); }
}
}
if (!carousel) { updateOptions(options); }
// === define and set variables ===
if (!carousel) {
options.axis = 'horizontal';
options.slideBy = 'page';
options.edgePadding = false;
var animateIn = options.animateIn,
animateOut = options.animateOut,
animateDelay = options.animateDelay,
animateNormal = options.animateNormal;
}
var horizontal = options.axis === 'horizontal' ? true : false,
outerWrapper = doc.createElement('div'),
innerWrapper = doc.createElement('div'),
middleWrapper,
container = options.container,
containerParent = container.parentNode,
containerHTML = container.outerHTML,
slideItems = container.children,
slideCount = slideItems.length,
breakpointZone,
windowWidth = getWindowWidth(),
isOn = false;
if (responsive) { setBreakpointZone(); }
if (carousel) { container.className += ' tns-vpfix'; }
// fixedWidth: viewport > rightBoundary > indexMax
var autoWidth = options.autoWidth,
fixedWidth = getOption('fixedWidth'),
edgePadding = getOption('edgePadding'),
gutter = getOption('gutter'),
viewport = getViewportWidth(),
center = getOption('center'),
items = !autoWidth ? Math.floor(getOption('items')) : 1,
slideBy = getOption('slideBy'),
viewportMax = options.viewportMax || options.fixedWidthViewportWidth,
arrowKeys = getOption('arrowKeys'),
speed = getOption('speed'),
rewind = options.rewind,
loop = rewind ? false : options.loop,
autoHeight = getOption('autoHeight'),
controls = getOption('controls'),
controlsText = getOption('controlsText'),
nav = getOption('nav'),
touch = getOption('touch'),
mouseDrag = getOption('mouseDrag'),
autoplay = getOption('autoplay'),
autoplayTimeout = getOption('autoplayTimeout'),
autoplayText = getOption('autoplayText'),
autoplayHoverPause = getOption('autoplayHoverPause'),
autoplayResetOnVisibility = getOption('autoplayResetOnVisibility'),
sheet = createStyleSheet(),
lazyload = options.lazyload,
lazyloadSelector = options.lazyloadSelector,
slidePositions, // collection of slide positions
slideItemsOut = [],
cloneCount = loop ? getCloneCountForLoop() : 0,
slideCountNew = !carousel ? slideCount + cloneCount : slideCount + cloneCount * 2,
hasRightDeadZone = (fixedWidth || autoWidth) && !loop ? true : false,
rightBoundary = fixedWidth ? getRightBoundary() : null,
updateIndexBeforeTransform = (!carousel || !loop) ? true : false,
// transform
transformAttr = horizontal ? 'left' : 'top',
transformPrefix = '',
transformPostfix = '',
// index
getIndexMax = (function () {
if (fixedWidth) {
return function() { return center && !loop ? slideCount - 1 : Math.ceil(- rightBoundary / (fixedWidth + gutter)); };
} else if (autoWidth) {
return function() {
for (var i = slideCountNew, result = i - 1; i--;) {
if (slidePositions[i] > - rightBoundary) { return i; }
}
};
} else {
return function() {
if (center && carousel && !loop) {
return slideCount - 1;
} else {
return loop || carousel ? Math.max(0, slideCountNew - Math.ceil(items)) : slideCountNew - 1;
}
};
}
})(),
index = getStartIndex(getOption('startIndex')),
indexCached = index,
displayIndex = getCurrentSlide(),
indexMin = 0,
indexMax = !autoWidth ? getIndexMax() : null,
// resize
resizeTimer,
preventActionWhenRunning = options.preventActionWhenRunning,
swipeAngle = options.swipeAngle,
moveDirectionExpected = swipeAngle ? '?' : true,
running = false,
onInit = options.onInit,
events = new Events(),
// id, class
newContainerClasses = ' tns-slider tns-' + options.mode,
slideId = container.id || getSlideId(),
disable = getOption('disable'),
disabled = false,
freezable = options.freezable,
freeze = freezable && !autoWidth ? getFreeze() : false,
frozen = false,
controlsEvents = {
'click': onControlsClick,
'keydown': onControlsKeydown
},
navEvents = {
'click': onNavClick,
'keydown': onNavKeydown
},
hoverEvents = {
'mouseover': mouseoverPause,
'mouseout': mouseoutRestart
},
visibilityEvent = {'visibilitychange': onVisibilityChange},
docmentKeydownEvent = {'keydown': onDocumentKeydown},
touchEvents = {
'touchstart': onPanStart,
'touchmove': onPanMove,
'touchend': onPanEnd,
'touchcancel': onPanEnd
}, dragEvents = {
'mousedown': onPanStart,
'mousemove': onPanMove,
'mouseup': onPanEnd,
'mouseleave': onPanEnd
},
hasControls = hasOption('controls'),
hasNav = hasOption('nav'),
navAsThumbnails = autoWidth ? true : options.navAsThumbnails,
hasAutoplay = hasOption('autoplay'),
hasTouch = hasOption('touch'),
hasMouseDrag = hasOption('mouseDrag'),
slideActiveClass = 'tns-slide-active',
imgCompleteClass = 'tns-complete',
imgEvents = {
'load': onImgLoaded,
'error': onImgFailed
},
imgsComplete,
liveregionCurrent,
preventScroll = options.preventScrollOnTouch === 'force' ? true : false;
// controls
if (hasControls) {
var controlsContainer = options.controlsContainer,
controlsContainerHTML = options.controlsContainer ? options.controlsContainer.outerHTML : '',
prevButton = options.prevButton,
nextButton = options.nextButton,
prevButtonHTML = options.prevButton ? options.prevButton.outerHTML : '',
nextButtonHTML = options.nextButton ? options.nextButton.outerHTML : '',
prevIsButton,
nextIsButton;
}
// nav
if (hasNav) {
var navContainer = options.navContainer,
navContainerHTML = options.navContainer ? options.navContainer.outerHTML : '',
navItems,
pages = autoWidth ? slideCount : getPages(),
pagesCached = 0,
navClicked = -1,
navCurrentIndex = getCurrentNavIndex(),
navCurrentIndexCached = navCurrentIndex,
navActiveClass = 'tns-nav-active',
navStr = 'Carousel Page ',
navStrCurrent = ' (Current Slide)';
}
// autoplay
if (hasAutoplay) {
var autoplayDirection = options.autoplayDirection === 'forward' ? 1 : -1,
autoplayButton = options.autoplayButton,
autoplayButtonHTML = options.autoplayButton ? options.autoplayButton.outerHTML : '',
autoplayHtmlStrings = ['<span class=\'tns-visually-hidden\'>', ' animation</span>'],
autoplayTimer,
animating,
autoplayHoverPaused,
autoplayUserPaused,
autoplayVisibilityPaused;
}
if (hasTouch || hasMouseDrag) {
var initPosition = {},
lastPosition = {},
translateInit,
disX,
disY,
panStart = false,
rafIndex,
getDist = horizontal ?
function(a, b) { return a.x - b.x; } :
function(a, b) { return a.y - b.y; };
}
// disable slider when slidecount <= items
if (!autoWidth) { resetVariblesWhenDisable(disable || freeze); }
if (TRANSFORM) {
transformAttr = TRANSFORM;
transformPrefix = 'translate';
if (HAS3DTRANSFORMS) {
transformPrefix += horizontal ? '3d(' : '3d(0px, ';
transformPostfix = horizontal ? ', 0px, 0px)' : ', 0px)';
} else {
transformPrefix += horizontal ? 'X(' : 'Y(';
transformPostfix = ')';
}
}
if (carousel) { container.className = container.className.replace('tns-vpfix', ''); }
initStructure();
initSheet();
initSliderTransform();
// === COMMON FUNCTIONS === //
function resetVariblesWhenDisable (condition) {
if (condition) {
controls = nav = touch = mouseDrag = arrowKeys = autoplay = autoplayHoverPause = autoplayResetOnVisibility = false;
}
}
function getCurrentSlide () {
var tem = carousel ? index - cloneCount : index;
while (tem < 0) { tem += slideCount; }
return tem%slideCount + 1;
}
function getStartIndex (ind) {
ind = ind ? Math.max(0, Math.min(loop ? slideCount - 1 : slideCount - items, ind)) : 0;
return carousel ? ind + cloneCount : ind;
}
function getAbsIndex (i) {
if (i == null) { i = index; }
if (carousel) { i -= cloneCount; }
while (i < 0) { i += slideCount; }
return Math.floor(i%slideCount);
}
function getCurrentNavIndex () {
var absIndex = getAbsIndex(),
result;
result = navAsThumbnails ? absIndex :
fixedWidth || autoWidth ? Math.ceil((absIndex + 1) * pages / slideCount - 1) :
Math.floor(absIndex / items);
// set active nav to the last one when reaches the right edge
// if (!loop && carousel && index === indexMax) { result = pages - 1; }
return result;
}
function getItemsMax () {
// fixedWidth or autoWidth while viewportMax is not available
if (autoWidth || (fixedWidth && !viewportMax)) {
return slideCount - 1;
// most cases
} else {
var str = fixedWidth ? 'fixedWidth' : 'items',
arr = [];
if (fixedWidth || options[str] < slideCount) { arr.push(options[str]); }
if (responsive) {
for (var bp in responsive) {
var tem = responsive[bp][str];
if (tem && (fixedWidth || tem < slideCount)) { arr.push(tem); }
}
}
if (!arr.length) { arr.push(0); }
return Math.ceil(fixedWidth ? viewportMax / Math.min.apply(null, arr) : Math.max.apply(null, arr));
}
}
function getCloneCountForLoop () {
var itemsMax = getItemsMax(),
result = carousel ? Math.ceil((itemsMax * 5 - slideCount)/2) : (itemsMax * 4 - slideCount);
result = Math.max(itemsMax, result);
return hasOption('edgePadding') ? result + 1 : result;
}
function getWindowWidth () {
return win.innerWidth || doc.documentElement.clientWidth || doc.body.clientWidth;
}
function getInsertPosition (pos) {
return pos === 'top' ? 'afterbegin' : 'beforeend';
}
function getClientWidth (el) {
var div = doc.createElement('div'), rect, width;
el.appendChild(div);
rect = div.getBoundingClientRect();
width = rect.right - rect.left;
div.remove();
return width || getClientWidth(el.parentNode);
}
function getViewportWidth () {
var gap = edgePadding ? edgePadding * 2 - gutter : 0;
return getClientWidth(containerParent) - gap;
}
function hasOption (item) {
if (options[item]) {
return true;
} else {
if (responsive) {
for (var bp in responsive) {
if (responsive[bp][item]) { return true; }
}
}
return false;
}
}
// get option:
// fixed width: viewport, fixedWidth, gutter => items
// others: window width => all variables
// all: items => slideBy
function getOption (item, ww) {
if (ww == null) { ww = windowWidth; }
if (item === 'items' && fixedWidth) {
return Math.floor((viewport + gutter) / (fixedWidth + gutter)) || 1;
} else {
var result = options[item];
if (responsive) {
for (var bp in responsive) {
// bp: convert string to number
if (ww >= parseInt(bp)) {
if (item in responsive[bp]) { result = responsive[bp][item]; }
}
}
}
if (item === 'slideBy' && result === 'page') { result = getOption('items'); }
if (!carousel && (item === 'slideBy' || item === 'items')) { result = Math.floor(result); }
return result;
}
}
function getSlideMarginLeft (i) {
return CALC ?
CALC + '(' + i * 100 + '% / ' + slideCountNew + ')' :
i * 100 / slideCountNew + '%';
}
function getInnerWrapperStyles (edgePaddingTem, gutterTem, fixedWidthTem, speedTem, autoHeightBP) {
var str = '';
if (edgePaddingTem !== undefined) {
var gap = edgePaddingTem;
if (gutterTem) { gap -= gutterTem; }
str = horizontal ?
'margin: 0 ' + gap + 'px 0 ' + edgePaddingTem + 'px;' :
'margin: ' + edgePaddingTem + 'px 0 ' + gap + 'px 0;';
} else if (gutterTem && !fixedWidthTem) {
var gutterTemUnit = '-' + gutterTem + 'px',
dir = horizontal ? gutterTemUnit + ' 0 0' : '0 ' + gutterTemUnit + ' 0';
str = 'margin: 0 ' + dir + ';'
}
if (!carousel && autoHeightBP && TRANSITIONDURATION && speedTem) { str += getTransitionDurationStyle(speedTem); }
return str;
}
function getContainerWidth (fixedWidthTem, gutterTem, itemsTem) {
if (fixedWidthTem) {
return (fixedWidthTem + gutterTem) * slideCountNew + 'px';
} else {
return CALC ?
CALC + '(' + slideCountNew * 100 + '% / ' + itemsTem + ')' :
slideCountNew * 100 / itemsTem + '%';
}
}
function getSlideWidthStyle (fixedWidthTem, gutterTem, itemsTem) {
var width;
if (fixedWidthTem) {
width = (fixedWidthTem + gutterTem) + 'px';
} else {
if (!carousel) { itemsTem = Math.floor(itemsTem); }
var dividend = carousel ? slideCountNew : itemsTem;
width = CALC ?
CALC + '(100% / ' + dividend + ')' :
100 / dividend + '%';
}
width = 'width:' + width;
// inner slider: overwrite outer slider styles
return nested !== 'inner' ? width + ';' : width + ' !important;';
}
function getSlideGutterStyle (gutterTem) {
var str = '';
// gutter maybe interger || 0
// so can't use 'if (gutter)'
if (gutterTem !== false) {
var prop = horizontal ? 'padding-' : 'margin-',
dir = horizontal ? 'right' : 'bottom';
str = prop + dir + ': ' + gutterTem + 'px;';
}
return str;
}
function getCSSPrefix (name, num) {
var prefix = name.substring(0, name.length - num).toLowerCase();
if (prefix) { prefix = '-' + prefix + '-'; }
return prefix;
}
function getTransitionDurationStyle (speed) {
return getCSSPrefix(TRANSITIONDURATION, 18) + 'transition-duration:' + speed / 1000 + 's;';
}
function getAnimationDurationStyle (speed) {
return getCSSPrefix(ANIMATIONDURATION, 17) + 'animation-duration:' + speed / 1000 + 's;';
}
function initStructure () {
var classOuter = 'tns-outer',
classInner = 'tns-inner',
hasGutter = hasOption('gutter');
outerWrapper.className = classOuter;
innerWrapper.className = classInner;
outerWrapper.id = slideId + '-ow';
innerWrapper.id = slideId + '-iw';
// set container properties
if (container.id === '') { container.id = slideId; }
newContainerClasses += PERCENTAGELAYOUT || autoWidth ? ' tns-subpixel' : ' tns-no-subpixel';
newContainerClasses += CALC ? ' tns-calc' : ' tns-no-calc';
if (autoWidth) { newContainerClasses += ' tns-autowidth'; }
newContainerClasses += ' tns-' + options.axis;
container.className += newContainerClasses;
// add constrain layer for carousel
if (carousel) {
middleWrapper = doc.createElement('div');
middleWrapper.id = slideId + '-mw';
middleWrapper.className = 'tns-ovh';
outerWrapper.appendChild(middleWrapper);
middleWrapper.appendChild(innerWrapper);
} else {
outerWrapper.appendChild(innerWrapper);
}
if (autoHeight) {
var wp = middleWrapper ? middleWrapper : innerWrapper;
wp.className += ' tns-ah';
}
containerParent.insertBefore(outerWrapper, container);
innerWrapper.appendChild(container);
// add id, class, aria attributes
// before clone slides
forEach(slideItems, function(item, i) {
addClass(item, 'tns-item');
if (!item.id) { item.id = slideId + '-item' + i; }
if (!carousel && animateNormal) { addClass(item, animateNormal); }
setAttrs(item, {
'aria-hidden': 'true',
'tabindex': '-1'
});
});
// ## clone slides
// carousel: n + slides + n
// gallery: slides + n
if (cloneCount) {
var fragmentBefore = doc.createDocumentFragment(),
fragmentAfter = doc.createDocumentFragment();
for (var j = cloneCount; j--;) {
var num = j%slideCount,
cloneFirst = slideItems[num].cloneNode(true);
removeAttrs(cloneFirst, 'id');
fragmentAfter.insertBefore(cloneFirst, fragmentAfter.firstChild);
if (carousel) {
var cloneLast = slideItems[slideCount - 1 - num].cloneNode(true);
removeAttrs(cloneLast, 'id');
fragmentBefore.appendChild(cloneLast);
}
}
container.insertBefore(fragmentBefore, container.firstChild);
container.appendChild(fragmentAfter);
slideItems = container.children;
}
}
function initSliderTransform () {
// ## images loaded/failed
if (hasOption('autoHeight') || autoWidth || !horizontal) {
var imgs = container.querySelectorAll('img');
// add complete class if all images are loaded/failed
forEach(imgs, function(img) {
var src = img.src;
if (src.indexOf('data:image') < 0) {
addEvents(img, imgEvents);
img.src = '';
img.src = src;
addClass(img, 'loading');
// check image cache
if (img.complete) { img.naturalWidth !== 0 ? imgLoaded(img) : imgFailed(img); }
} else if (!lazyload) {
imgLoaded(img);
}
});
// All imgs are completed
raf(function(){ imgsLoadedCheck(arrayFromNodeList(imgs), function() { imgsComplete = true; }); });
// Check imgs in window only for auto height
if (!autoWidth && horizontal) { imgs = getImageArray(index, Math.min(index + items - 1, slideCountNew - 1)); }
lazyload ? initSliderTransformStyleCheck() : raf(function(){ imgsLoadedCheck(arrayFromNodeList(imgs), initSliderTransformStyleCheck); });
} else {
// set container transform property
if (carousel) { doContainerTransformSilent(); }
// update slider tools and events
initTools();
initEvents();
}
}
function initSliderTransformStyleCheck () {
if (autoWidth) {
// check styles application
var num = loop ? index : slideCount - 1;
(function stylesApplicationCheck() {
slideItems[num - 1].getBoundingClientRect().right.toFixed(2) === slideItems[num].getBoundingClientRect().left.toFixed(2) ?
initSliderTransformCore() :
setTimeout(function(){ stylesApplicationCheck() }, 16);
})();
} else {
initSliderTransformCore();
}
}
function initSliderTransformCore () {
// run Fn()s which are rely on image loading
if (!horizontal || autoWidth) {
setSlidePositions();
if (autoWidth) {
rightBoundary = getRightBoundary();
if (freezable) { freeze = getFreeze(); }
indexMax = getIndexMax(); // <= slidePositions, rightBoundary <=
resetVariblesWhenDisable(disable || freeze);
} else {
updateContentWrapperHeight();
}
}
// set container transform property
if (carousel) { doContainerTransformSilent(); }
// update slider tools and events
initTools();
initEvents();
}
function initSheet () {
// gallery:
// set animation classes and left value for gallery slider
if (!carousel) {
for (var i = index, l = index + Math.min(slideCount, items); i < l; i++) {
var item = slideItems[i];
item.style.left = (i - index) * 100 / items + '%';
addClass(item, animateIn);
removeClass(item, animateNormal);
}
}
// #### LAYOUT
// ## INLINE-BLOCK VS FLOAT
// ## PercentageLayout:
// slides: inline-block
// remove blank space between slides by set font-size: 0
// ## Non PercentageLayout:
// slides: float
// margin-right: -100%
// margin-left: ~
// Resource: https://docs.google.com/spreadsheets/d/147up245wwTXeQYve3BRSAD4oVcvQmuGsFteJOeA5xNQ/edit?usp=sharing
if (horizontal) {
if (PERCENTAGELAYOUT || autoWidth) {
addCSSRule(sheet, '#' + slideId + ' > .tns-item', 'font-size:' + win.getComputedStyle(slideItems[0]).fontSize + ';', getCssRulesLength(sheet));
addCSSRule(sheet, '#' + slideId, 'font-size:0;', getCssRulesLength(sheet));
} else if (carousel) {
forEach(slideItems, function (slide, i) {
slide.style.marginLeft = getSlideMarginLeft(i);
});
}
}
// ## BASIC STYLES
if (CSSMQ) {
// middle wrapper style
if (TRANSITIONDURATION) {
var str = middleWrapper && options.autoHeight ? getTransitionDurationStyle(options.speed) : '';
addCSSRule(sheet, '#' + slideId + '-mw', str, getCssRulesLength(sheet));
}
// inner wrapper styles
str = getInnerWrapperStyles(options.edgePadding, options.gutter, options.fixedWidth, options.speed, options.autoHeight);
addCSSRule(sheet, '#' + slideId + '-iw', str, getCssRulesLength(sheet));
// container styles
if (carousel) {
str = horizontal && !autoWidth ? 'width:' + getContainerWidth(options.fixedWidth, options.gutter, options.items) + ';' : '';
if (TRANSITIONDURATION) { str += getTransitionDurationStyle(speed); }
addCSSRule(sheet, '#' + slideId, str, getCssRulesLength(sheet));
}
// slide styles
str = horizontal && !autoWidth ? getSlideWidthStyle(options.fixedWidth, options.gutter, options.items) : '';
if (options.gutter) { str += getSlideGutterStyle(options.gutter); }
// set gallery items transition-duration
if (!carousel) {
if (TRANSITIONDURATION) { str += getTransitionDurationStyle(speed); }
if (ANIMATIONDURATION) { str += getAnimationDurationStyle(speed); }
}
if (str) { addCSSRule(sheet, '#' + slideId + ' > .tns-item', str, getCssRulesLength(sheet)); }
// non CSS mediaqueries: IE8
// ## update inner wrapper, container, slides if needed
// set inline styles for inner wrapper & container
// insert stylesheet (one line) for slides only (since slides are many)
} else {
// middle wrapper styles
update_carousel_transition_duration();
// inner wrapper styles
innerWrapper.style.cssText = getInnerWrapperStyles(edgePadding, gutter, fixedWidth, autoHeight);
// container styles
if (carousel && horizontal && !autoWidth) {
container.style.width = getContainerWidth(fixedWidth, gutter, items);
}
// slide styles
var str = horizontal && !autoWidth ? getSlideWidthStyle(fixedWidth, gutter, items) : '';
if (gutter) { str += getSlideGutterStyle(gutter); }
// append to the last line
if (str) { addCSSRule(sheet, '#' + slideId + ' > .tns-item', str, getCssRulesLength(sheet)); }
}
// ## MEDIAQUERIES
if (responsive && CSSMQ) {
for (var bp in responsive) {
// bp: convert string to number
bp = parseInt(bp);
var opts = responsive[bp],
str = '',
middleWrapperStr = '',
innerWrapperStr = '',
containerStr = '',
slideStr = '',
itemsBP = !autoWidth ? getOption('items', bp) : null,
fixedWidthBP = getOption('fixedWidth', bp),
speedBP = getOption('speed', bp),
edgePaddingBP = getOption('edgePadding', bp),
autoHeightBP = getOption('autoHeight', bp),
gutterBP = getOption('gutter', bp);
// middle wrapper string
if (TRANSITIONDURATION && middleWrapper && getOption('autoHeight', bp) && 'speed' in opts) {
middleWrapperStr = '#' + slideId + '-mw{' + getTransitionDurationStyle(speedBP) + '}';
}
// inner wrapper string
if ('edgePadding' in opts || 'gutter' in opts) {
innerWrapperStr = '#' + slideId + '-iw{' + getInnerWrapperStyles(edgePaddingBP, gutterBP, fixedWidthBP, speedBP, autoHeightBP) + '}';
}
// container string
if (carousel && horizontal && !autoWidth && ('fixedWidth' in opts || 'items' in opts || (fixedWidth && 'gutter' in opts))) {
containerStr = 'width:' + getContainerWidth(fixedWidthBP, gutterBP, itemsBP) + ';';
}
if (TRANSITIONDURATION && 'speed' in opts) {
containerStr += getTransitionDurationStyle(speedBP);
}
if (containerStr) {
containerStr = '#' + slideId + '{' + containerStr + '}';
}
// slide string
if ('fixedWidth' in opts || (fixedWidth && 'gutter' in opts) || !carousel && 'items' in opts) {
slideStr += getSlideWidthStyle(fixedWidthBP, gutterBP, itemsBP);
}
if ('gutter' in opts) {
slideStr += getSlideGutterStyle(gutterBP);
}
// set gallery items transition-duration
if (!carousel && 'speed' in opts) {
if (TRANSITIONDURATION) { slideStr += getTransitionDurationStyle(speedBP); }
if (ANIMATIONDURATION) { slideStr += getAnimationDurationStyle(speedBP); }
}
if (slideStr) { slideStr = '#' + slideId + ' > .tns-item{' + slideStr + '}'; }
// add up
str = middleWrapperStr + innerWrapperStr + containerStr + slideStr;
if (str) {
sheet.insertRule('@media (min-width: ' + bp / 16 + 'em) {' + str + '}', sheet.cssRules.length);
}
}
}
}
function initTools () {
// == slides ==
updateSlideStatus();
// == live region ==
outerWrapper.insertAdjacentHTML('afterbegin', '<div class="tns-liveregion tns-visually-hidden" aria-live="polite" aria-atomic="true">slide <span class="current">' + getLiveRegionStr() + '</span> of ' + slideCount + '</div>');
liveregionCurrent = outerWrapper.querySelector('.tns-liveregion .current');
// == autoplayInit ==
if (hasAutoplay) {
var txt = autoplay ? 'stop' : 'start';
if (autoplayButton) {
setAttrs(autoplayButton, {'data-action': txt});
} else if (options.autoplayButtonOutput) {
outerWrapper.insertAdjacentHTML(getInsertPosition(options.autoplayPosition), '<button data-action="' + txt + '">' + autoplayHtmlStrings[0] + txt + autoplayHtmlStrings[1] + autoplayText[0] + '</button>');
autoplayButton = outerWrapper.querySelector('[data-action]');