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196                        ? document.querySelectorAll(options.elements)
197                        : options.elements
198                );
199            }
200
201            this.eventRegistry = {lightbox: [], thumbnails: []};
202            this.items = [];
203            this.captions = [];
204
205            if (elements) {
206
207                elements.forEach(function(element, index) {
208
209                    self.items.push(element.getAttribute(options.urlAttribute));
210                    self.captions.push(element.getAttribute(options.captionAttribute));
211
212                    if (options.bindToItems) {
213
214                        self.addEvent(element, 'click', function(e) {
215
216                            e.preventDefault();
217                            self.showPosition(index);
218
219                        }, 'thumbnails');
220
221                    }
222
223                });
224
225            }
226
227            if (options.items) {
228                this.items = options.items;
229            }
230
231            if (options.captions) {
232                this.captions = options.captions;
233            }
234
235        },
236
237        addEvent: function(element, eventName, callback, scope) {
238
239            this.eventRegistry[scope || 'lightbox'].push({
240                element: element,
241                eventName: eventName,
242                callback: callback
243            });
244
245            element.addEventListener(eventName, callback);
246
247            return this;
248
249        },
250
251        removeEvents: function(scope) {
252
253            this.eventRegistry[scope].forEach(function(item) {
254                item.element.removeEventListener(item.eventName, item.callback);
255            });
256
257            this.eventRegistry[scope] = [];
258
259            return this;
260
261        },
262
263        next: function() {
264
265            return this.showPosition(this.currentPosition + 1);
266
267        },
268
269        prev: function() {
270
271            return this.showPosition(this.currentPosition - 1);
272
273        },
274
275        normalizePosition: function(position) {
276
277            if (position >= this.items.length) {
278                position = 0;
279            } else if (position < 0) {
280                position = this.items.length - 1;
281            }
282
283            return position;
284
285        },
286
287        showPosition: function(position) {
288
289            var newPosition = this.normalizePosition(position);
290
291            if (typeof this.currentPosition !== 'undefined') {
292                this.direction = newPosition > this.currentPosition ? 'next' : 'prev';
293            }
294
295            this.currentPosition = newPosition;
296
297            return this.setupLightboxHtml()
298                .prepareItem(this.currentPosition, this.setContent)
299                .show();
300
301        },
302
303        loading: function(on) {
304
305            var self = this;
306            var options = this.options;
307
308            if (on) {
309
310                this.loadingTimeout = setTimeout(function() {
311
312                    addClass(self.$el, options.elementLoadingClass);
313
314                    self.$content.innerHTML =
315                        '<p class="slbLoadingText ' + options.loadingTextClass + '">' +
316                        options.loadingCaption +
317                        '</p>';
318                    self.show();
319
320                }, options.loadingTimeout);
321
322            } else {
323
324                removeClass(this.$el, options.elementLoadingClass);
325                clearTimeout(this.loadingTimeout);
326
327            }
328
329        },
330
331        prepareItem: function(position, callback) {
332
333            var self = this;
334            var url = this.items[position];
335
336            this.loading(true);
337
338            if (this.options.videoRegex.test(url)) {
339
340                callback.call(self, parseHtml(
341                    '<div class="slbIframeCont"><iframe class="slbIframe" frameborder="0" allowfullscreen src="' + url + '"></iframe></div>')
342                );
343
344            } else {
345
346                var $imageCont = parseHtml(
347                    '<div class="slbImageWrap"><img class="slbImage" src="' + url + '" /></div>'
348                );
349
350                this.$currentImage = $imageCont.querySelector('.slbImage');
351
352                if (this.options.showCaptions && this.captions[position]) {
353                    $imageCont.appendChild(parseHtml(
354                        '<div class="slbCaption">' + this.captions[position] + '</div>')
355                    );
356                }
357
358                this.loadImage(url, function() {
359
360                    self.setImageDimensions();
361
362                    callback.call(self, $imageCont);
363
364                    self.loadImage(self.items[self.normalizePosition(self.currentPosition + 1)]);
365
366                });
367
368            }
369
370            return this;
371
372        },
373
374        loadImage: function(url, callback) {
375
376            if (!this.options.videoRegex.test(url)) {
377
378                var image = new Image();
379                callback && (image.onload = callback);
380                image.src = url;
381
382            }
383
384        },
385
386        setupLightboxHtml: function() {
387
388            var o = this.options;
389
390            if (!this.$el) {
391
392                this.$el = parseHtml(
393                    '<div class="slbElement ' + o.elementClass + '">' +
394                    '<div class="slbOverlay"></div>' +
395                    '<div class="slbWrapOuter">' +
396                    '<div class="slbWrap">' +
397                    '<div class="slbContentOuter">' +
398                    '<div class="slbContent"></div>' +
399                    '<button type="button" title="' + o.closeBtnCaption + '" class="slbCloseBtn ' + o.closeBtnClass + '">×</button>' +
400                    (this.items.length > 1
401                            ? '<div class="slbArrows">' +
402                            '<button type="button" title="' + o.prevBtnCaption + '" class="prev slbArrow' + o.prevBtnClass + '">' + o.prevBtnCaption + '</button>' +
403                            '<button type="button" title="' + o.nextBtnCaption + '" class="next slbArrow' + o.nextBtnClass + '">' + o.nextBtnCaption + '</button>' +
404                            '</div>'
405                            : ''
406                    ) +
407                    '</div>' +
408                    '</div>' +
409                    '</div>' +
410                    '</div>'
411                );
412
413                this.$content = this.$el.querySelector('.slbContent');
414
415            }
416
417            this.$content.innerHTML = '';
418
419            return this;
420
421        },
422
423        show: function() {
424
425            if (!this.modalInDom) {
426
427                document.querySelector(this.options.appendTarget).appendChild(this.$el);
428                addClass(document.documentElement, this.options.htmlClass);
429                this.setupLightboxEvents();
430                this.modalInDom = true;
431
432            }
433
434            return this;
435
436        },
437
438        setContent: function(content) {
439
440            var $content = typeof content === 'string'
441                ? parseHtml(content)
442                : content
443            ;
444
445            this.loading(false);
446
447            this.setupLightboxHtml();
448
449            removeClass(this.$content, 'slbDirectionNext');
450            removeClass(this.$content, 'slbDirectionPrev');
451
452            if (this.direction) {
453                addClass(this.$content, this.direction === 'next'
454                    ? 'slbDirectionNext'
455                    : 'slbDirectionPrev'
456                );
457            }
458
459            if (this.options.beforeSetContent) {
460                this.options.beforeSetContent($content, this);
461            }
462
463            this.$content.appendChild($content);
464
465            return this;
466
467        },
468
469        setImageDimensions: function() {
470
471            if (this.$currentImage) {
472                this.$currentImage.style.maxHeight = getWindowHeight() + 'px';
473            }
474
475        },
476
477        setupLightboxEvents: function() {
478
479            var self = this;
480
481            if (this.eventRegistry.lightbox.length) {
482                return this;
483            }
484
485            this.addEvent(this.$el, 'click', function(e) {
486
487                var $target = e.target;
488
489                if (matches($target, '.slbCloseBtn') || (self.options.closeOnOverlayClick && matches($target, '.slbWrap'))) {
490
491                    self.close();
492
493                } else if (matches($target, '.slbArrow')) {
494
495                    matches($target, '.next') ? self.next() : self.prev();
496
497                } else if (self.options.nextOnImageClick && self.items.length > 1 && matches($target, '.slbImage')) {
498
499                    self.next();
500
501                }
502
503            }).addEvent(document, 'keyup', function(e) {
504
505                self.options.closeOnEscapeKey && e.keyCode === 27 && self.close();
506
507                if (self.items.length > 1) {
508                    (e.keyCode === 39 || e.keyCode === 68) && self.next();
509                    (e.keyCode === 37 || e.keyCode === 65) && self.prev();
510                }
511
512            }).addEvent(window, 'resize', function() {
513
514                self.setImageDimensions();
515
516            });
517
518            return this;
519
520        },
521
522        close: function() {
523
524            if (this.modalInDom) {
525
526                this.runHook('beforeClose');
527                this.removeEvents('lightbox');
528                this.$el && this.$el.parentNode.removeChild(this.$el);
529                removeClass(document.documentElement, this.options.htmlClass);
530                this.modalInDom = false;

696
697        body.appendChild(div);
698        try {
699            var str = '(10px * 10)',
700                vals = ['calc' + str, '-moz-calc' + str, '-webkit-calc' + str],
701                val;
702            for (var i = 0; i < 3; i++) {
703                val = vals[i];
704                div.style.width = val;
705                if (div.offsetWidth === 100) {
706                    result = val.replace(str, '');
707                    break;
708                }
709            }
710        } catch (e) {}
711
712        body.fake ? resetFakeBody(body, docOverflow) : div.remove();
713
714        return result;
715    }
716
717// get subpixel support value
718
719    function percentageLayout() {
720        // check subpixel layout supporting
721        var doc = document,
722            body = getBody(),
723            docOverflow = setFakeBody(body),
724            wrapper = doc.createElement('div'),
725            outer = doc.createElement('div'),
726            str = '',
727            count = 70,
728            perPage = 3,
729            supported = false;
730
731        wrapper.className = "tns-t-subp2";
732        outer.className = "tns-t-ct";
733
734        for (var i = 0; i < count; i++) {
735            str += '<div></div>';
736        }
737
738        outer.innerHTML = str;
739        wrapper.appendChild(outer);
740        body.appendChild(wrapper);
741
742        supported = Math.abs(wrapper.getBoundingClientRect().left - outer.children[count - perPage].getBoundingClientRect().left) < 2;
743
744        body.fake ? resetFakeBody(body, docOverflow) : wrapper.remove();
745
746        return supported;
747    }
748
749    function mediaquerySupport () {
750        if (window.matchMedia || window.msMatchMedia) {
751            return true;
752        }
753
754        var doc = document,
755            body = getBody(),
756            docOverflow = setFakeBody(body),
757            div = doc.createElement('div'),
758            style = doc.createElement('style'),
759            rule = '@media all and (min-width:1px){.tns-mq-test{position:absolute}}',
760            position;
761
762        style.type = 'text/css';
763        div.className = 'tns-mq-test';
764
765        body.appendChild(style);
766        body.appendChild(div);
767
768        if (style.styleSheet) {
769            style.styleSheet.cssText = rule;
770        } else {
771            style.appendChild(doc.createTextNode(rule));
772        }
773
774        position = window.getComputedStyle ? window.getComputedStyle(div).position : div.currentStyle['position'];
775
776        body.fake ? resetFakeBody(body, docOverflow) : div.remove();
777
778        return position === "absolute";
779    }
780
781// create and append style sheet
782    function createStyleSheet (media, nonce) {
783        // Create the <style> tag
784        var style = document.createElement("style");
785        // style.setAttribute("type", "text/css");
786
787        // Add a media (and/or media query) here if you'd like!
788        // style.setAttribute("media", "screen")
789        // style.setAttribute("media", "only screen and (max-width : 1024px)")
790        if (media) { style.setAttribute("media", media); }
791
792        // Add nonce attribute for Content Security Policy
793        if (nonce) { style.setAttribute("nonce", nonce); }
794
795        // WebKit hack :(
796        // style.appendChild(document.createTextNode(""));
797
798        // Add the <style> element to the page
799        document.querySelector('head').appendChild(style);
800
801        return style.sheet ? style.sheet : style.styleSheet;
802    }
803
804// cross browsers addRule method
805    function addCSSRule(sheet, selector, rules, index) {
806        // return raf(function() {
807        'insertRule' in sheet ?
808            sheet.insertRule(selector + '{' + rules + '}', index) :
809            sheet.addRule(selector, rules, index);
810        // });
811    }
812
813// cross browsers addRule method
814    function removeCSSRule(sheet, index) {
815        // return raf(function() {
816        'deleteRule' in sheet ?
817            sheet.deleteRule(index) :
818            sheet.removeRule(index);
819        // });
820    }
821
822    function getCssRulesLength(sheet) {
823        var rule = ('insertRule' in sheet) ? sheet.cssRules : sheet.rules;
824        return rule.length;
825    }
826
827    function toDegree (y, x) {
828        return Math.atan2(y, x) * (180 / Math.PI);
829    }
830
831    function getTouchDirection(angle, range) {
832        var direction = false,
833            gap = Math.abs(90 - Math.abs(angle));
834
835        if (gap >= 90 - range) {
836            direction = 'horizontal';
837        } else if (gap <= range) {
838            direction = 'vertical';
839        }
840
841        return direction;
842    }
843
844// https://toddmotto.com/ditch-the-array-foreach-call-nodelist-hack/
845    function forEach (arr, callback, scope) {
846        for (var i = 0, l = arr.length; i < l; i++) {
847            callback.call(scope, arr[i], i);
848        }
849    }
850
851    var classListSupport = 'classList' in document.createElement('_');
852
853    var hasClass = classListSupport ?
854        function (el, str) { return el.classList.contains(str); } :
855        function (el, str) { return el.className.indexOf(str) >= 0; };
856
857    var addClass = classListSupport ?
858        function (el, str) {
859            if (!hasClass(el,  str)) { el.classList.add(str); }
860        } :
861        function (el, str) {
862            if (!hasClass(el,  str)) { el.className += ' ' + str; }
863        };
864
865    var removeClass = classListSupport ?
866        function (el, str) {
867            if (hasClass(el,  str)) { el.classList.remove(str); }
868        } :
869        function (el, str) {
870            if (hasClass(el, str)) { el.className = el.className.replace(str, ''); }
871        };
872
873    function hasAttr(el, attr) {
874        return el.hasAttribute(attr);
875    }
876
877    function getAttr(el, attr) {
878        return el.getAttribute(attr);
879    }
880
881    function isNodeList(el) {
882        // Only NodeList has the "item()" function
883        return typeof el.item !== "undefined";
884    }
885
886    function setAttrs(els, attrs) {
887        els = (isNodeList(els) || els instanceof Array) ? els : [els];
888        if (Object.prototype.toString.call(attrs) !== '[object Object]') { return; }
889
890        for (var i = els.length; i--;) {
891            for(var key in attrs) {
892                els[i].setAttribute(key, attrs[key]);
893            }
894        }
895    }
896
897    function removeAttrs(els, attrs) {
898        els = (isNodeList(els) || els instanceof Array) ? els : [els];
899        attrs = (attrs instanceof Array) ? attrs : [attrs];
900
901        var attrLength = attrs.length;
902        for (var i = els.length; i--;) {
903            for (var j = attrLength; j--;) {
904                els[i].removeAttribute(attrs[j]);
905            }
906        }
907    }
908
909    function arrayFromNodeList (nl) {
910        var arr = [];
911        for (var i = 0, l = nl.length; i < l; i++) {
912            arr.push(nl[i]);
913        }
914        return arr;
915    }
916
917    function hideElement(el, forceHide) {
918        if (el.style.display !== 'none') { el.style.display = 'none'; }
919    }
920
921    function showElement(el, forceHide) {
922        if (el.style.display === 'none') { el.style.display = ''; }
923    }
924
925    function isVisible(el) {
926        return window.getComputedStyle(el).display !== 'none';
927    }
928
929    function whichProperty(props){
930        if (typeof props === 'string') {
931            var arr = [props],
932                Props = props.charAt(0).toUpperCase() + props.substr(1),
933                prefixes = ['Webkit', 'Moz', 'ms', 'O'];
934
935            prefixes.forEach(function(prefix) {
936                if (prefix !== 'ms' || props === 'transform') {
937                    arr.push(prefix + Props);
938                }
939            });
940
941            props = arr;
942        }
943
944        var el = document.createElement('fakeelement'),
945            len = props.length;
946        for(var i = 0; i < props.length; i++){
947            var prop = props[i];
948            if( el.style[prop] !== undefined ){ return prop; }
949        }
950
951        return false; // explicit for ie9-
952    }
953
954    function has3DTransforms(tf){
955        if (!tf) { return false; }
956        if (!window.getComputedStyle) { return false; }
957
958        var doc = document,
959            body = getBody(),
960            docOverflow = setFakeBody(body),
961            el = doc.createElement('p'),
962            has3d,
963            cssTF = tf.length > 9 ? '-' + tf.slice(0, -9).toLowerCase() + '-' : '';
964
965        cssTF += 'transform';
966
967        // Add it to the body to get the computed style
968        body.insertBefore(el, null);
969
970        el.style[tf] = 'translate3d(1px,1px,1px)';
971        has3d = window.getComputedStyle(el).getPropertyValue(cssTF);
972
973        body.fake ? resetFakeBody(body, docOverflow) : el.remove();
974
975        return (has3d !== undefined && has3d.length > 0 && has3d !== "none");
976    }
977
978// get transitionend, animationend based on transitionDuration
979// @propin: string
980// @propOut: string, first-letter uppercase
981// Usage: getEndProperty('WebkitTransitionDuration', 'Transition') => webkitTransitionEnd
982    function getEndProperty(propIn, propOut) {
983        var endProp = false;
984        if (/^Webkit/.test(propIn)) {
985            endProp = 'webkit' + propOut + 'End';
986        } else if (/^O/.test(propIn)) {
987            endProp = 'o' + propOut + 'End';
988        } else if (propIn) {
989            endProp = propOut.toLowerCase() + 'end';
990        }
991        return endProp;
992    }
993
994// Test via a getter in the options object to see if the passive property is accessed
995    var supportsPassive = false;
996    try {
997        var opts = Object.defineProperty({}, 'passive', {
998            get: function() {
999                supportsPassive = true;
1000            }
1001        });
1002        window.addEventListener("test", null, opts);
1003    } catch (e) {}
1004    var passiveOption = supportsPassive ? { passive: true } : false;
1005
1006    function addEvents(el, obj, preventScrolling) {
1007        for (var prop in obj) {
1008            var option = ['touchstart', 'touchmove'].indexOf(prop) >= 0 && !preventScrolling ? passiveOption : false;
1009            el.addEventListener(prop, obj[prop], option);
1010        }
1011    }
1012
1013    function removeEvents(el, obj) {
1014        for (var prop in obj) {
1015            var option = ['touchstart', 'touchmove'].indexOf(prop) >= 0 ? passiveOption : false;
1016            el.removeEventListener(prop, obj[prop], option);
1017        }
1018    }
1019
1020    function Events() {
1021        return {
1022            topics: {},
1023            on: function (eventName, fn) {
1024                this.topics[eventName] = this.topics[eventName] || [];
1025                this.topics[eventName].push(fn);
1026            },
1027            off: function(eventName, fn) {
1028                if (this.topics[eventName]) {
1029                    for (var i = 0; i < this.topics[eventName].length; i++) {
1030                        if (this.topics[eventName][i] === fn) {
1031                            this.topics[eventName].splice(i, 1);
1032                            break;
1033                        }
1034                    }
1035                }
1036            },
1037            emit: function (eventName, data) {
1038                data.type = eventName;
1039                if (this.topics[eventName]) {
1040                    this.topics[eventName].forEach(function(fn) {
1041                        fn(data, eventName);
1042                    });
1043                }
1044            }
1045        };
1046    }
1047
1048    function jsTransform(element, attr, prefix, postfix, to, duration, callback) {
1049        var tick = Math.min(duration, 10),
1050            unit = (to.indexOf('%') >= 0) ? '%' : 'px',
1051            to = to.replace(unit, ''),
1052            from = Number(element.style[attr].replace(prefix, '').replace(postfix, '').replace(unit, '')),
1053            positionTick = (to - from) / duration * tick,
1054            running;
1055
1056        setTimeout(moveElement, tick);
1057        function moveElement() {
1058            duration -= tick;
1059            from += positionTick;
1060            element.style[attr] = prefix + from + unit + postfix;
1061            if (duration > 0) {
1062                setTimeout(moveElement, tick);
1063            } else {
1064                callback();
1065            }
1066        }
1067    }
1068
1069// Object.keys
1070    if (!Object.keys) {
1071        Object.keys = function(object) {
1072            var keys = [];
1073            for (var name in object) {
1074                if (Object.prototype.hasOwnProperty.call(object, name)) {
1075                    keys.push(name);
1076                }
1077            }
1078            return keys;
1079        };
1080    }
1081
1082// ChildNode.remove
1083    if(!("remove" in Element.prototype)){
1084        Element.prototype.remove = function(){
1085            if(this.parentNode) {
1086                this.parentNode.removeChild(this);
1087            }
1088        };
1089    }
1090
1091    var tns = function(options) {
1092        options = extend({
1093            container: '.slider',
1094            mode: 'carousel',
1095            axis: 'horizontal',
1096            items: 1,
1097            gutter: 0,
1098            edgePadding: 0,
1099            fixedWidth: false,
1100            autoWidth: false,
1101            viewportMax: false,
1102            slideBy: 1,
1103            center: false,
1104            controls: true,
1105            controlsPosition: 'top',
1106            controlsText: ['prev', 'next'],
1107            controlsContainer: false,
1108            prevButton: false,
1109            nextButton: false,
1110            nav: true,
1111            navPosition: 'top',
1112            navContainer: false,
1113            navAsThumbnails: false,
1114            arrowKeys: false,
1115            speed: 300,
1116            autoplay: false,
1117            autoplayPosition: 'top',
1118            autoplayTimeout: 5000,
1119            autoplayDirection: 'forward',
1120            autoplayText: ['start', 'stop'],
1121            autoplayHoverPause: false,
1122            autoplayButton: false,
1123            autoplayButtonOutput: true,
1124            autoplayResetOnVisibility: true,
1125            animateIn: 'tns-fadeIn',
1126            animateOut: 'tns-fadeOut',
1127            animateNormal: 'tns-normal',
1128            animateDelay: false,
1129            loop: true,
1130            rewind: false,
1131            autoHeight: false,
1132            responsive: false,
1133            lazyload: false,
1134            lazyloadSelector: '.tns-lazy-img',
1135            touch: true,
1136            mouseDrag: false,
1137            swipeAngle: 15,
1138            nested: false,
1139            preventActionWhenRunning: false,
1140            preventScrollOnTouch: false,
1141            freezable: true,
1142            onInit: false,
1143            useLocalStorage: true,
1144            nonce: false
1145        }, options || {});
1146
1147        var doc = document,
1148            win = window,
1149            KEYS = {
1150                ENTER: 13,
1151                SPACE: 32,
1152                LEFT: 37,
1153                RIGHT: 39
1154            },
1155            tnsStorage = {},
1156            localStorageAccess = options.useLocalStorage;
1157
1158        if (localStorageAccess) {
1159            // check browser version and local storage access
1160            var browserInfo = navigator.userAgent;
1161            var uid = new Date;
1162
1163            try {
1164                tnsStorage = win.localStorage;
1165                if (tnsStorage) {
1166                    tnsStorage.setItem(uid, uid);
1167                    localStorageAccess = tnsStorage.getItem(uid) == uid;
1168                    tnsStorage.removeItem(uid);
1169                } else {
1170                    localStorageAccess = false;
1171                }
1172                if (!localStorageAccess) { tnsStorage = {}; }
1173            } catch(e) {
1174                localStorageAccess = false;
1175            }
1176
1177            if (localStorageAccess) {
1178                // remove storage when browser version changes
1179                if (tnsStorage['tnsApp'] && tnsStorage['tnsApp'] !== browserInfo) {
1180                    ['tC', 'tPL', 'tMQ', 'tTf', 't3D', 'tTDu', 'tTDe', 'tADu', 'tADe', 'tTE', 'tAE'].forEach(function(item) { tnsStorage.removeItem(item); });
1181                }
1182                // update browserInfo
1183                localStorage['tnsApp'] = browserInfo;
1184            }
1185        }
1186
1187        var CALC = tnsStorage['tC'] ? checkStorageValue(tnsStorage['tC']) : setLocalStorage(tnsStorage, 'tC', calc(), localStorageAccess),
1188            PERCENTAGELAYOUT = tnsStorage['tPL'] ? checkStorageValue(tnsStorage['tPL']) : setLocalStorage(tnsStorage, 'tPL', percentageLayout(), localStorageAccess),
1189            CSSMQ = tnsStorage['tMQ'] ? checkStorageValue(tnsStorage['tMQ']) : setLocalStorage(tnsStorage, 'tMQ', mediaquerySupport(), localStorageAccess),
1190            TRANSFORM = tnsStorage['tTf'] ? checkStorageValue(tnsStorage['tTf']) : setLocalStorage(tnsStorage, 'tTf', whichProperty('transform'), localStorageAccess),
1191            HAS3DTRANSFORMS = tnsStorage['t3D'] ? checkStorageValue(tnsStorage['t3D']) : setLocalStorage(tnsStorage, 't3D', has3DTransforms(TRANSFORM), localStorageAccess),
1192            TRANSITIONDURATION = tnsStorage['tTDu'] ? checkStorageValue(tnsStorage['tTDu']) : setLocalStorage(tnsStorage, 'tTDu', whichProperty('transitionDuration'), localStorageAccess),
1193            TRANSITIONDELAY = tnsStorage['tTDe'] ? checkStorageValue(tnsStorage['tTDe']) : setLocalStorage(tnsStorage, 'tTDe', whichProperty('transitionDelay'), localStorageAccess),
1194            ANIMATIONDURATION = tnsStorage['tADu'] ? checkStorageValue(tnsStorage['tADu']) : setLocalStorage(tnsStorage, 'tADu', whichProperty('animationDuration'), localStorageAccess),
1195            ANIMATIONDELAY = tnsStorage['tADe'] ? checkStorageValue(tnsStorage['tADe']) : setLocalStorage(tnsStorage, 'tADe', whichProperty('animationDelay'), localStorageAccess),
1196            TRANSITIONEND = tnsStorage['tTE'] ? checkStorageValue(tnsStorage['tTE']) : setLocalStorage(tnsStorage, 'tTE', getEndProperty(TRANSITIONDURATION, 'Transition'), localStorageAccess),
1197            ANIMATIONEND = tnsStorage['tAE'] ? checkStorageValue(tnsStorage['tAE']) : setLocalStorage(tnsStorage, 'tAE', getEndProperty(ANIMATIONDURATION, 'Animation'), localStorageAccess);
1198
1199        // get element nodes from selectors
1200        var supportConsoleWarn = win.console && typeof win.console.warn === "function",
1201            tnsList = ['container', 'controlsContainer', 'prevButton', 'nextButton', 'navContainer', 'autoplayButton'],
1202            optionsElements = {};
1203
1204        tnsList.forEach(function(item) {
1205            if (typeof options[item] === 'string') {
1206                var str = options[item],
1207                    el = doc.querySelector(str);
1208                optionsElements[item] = str;
1209
1210                if (el && el.nodeName) {
1211                    options[item] = el;
1212                } else {
1213                    if (supportConsoleWarn) { console.warn('Can\'t find', options[item]); }
1214                    return;
1215                }
1216            }
1217        });
1218
1219        // make sure at least 1 slide
1220        if (options.container.children.length < 1) {
1221            if (supportConsoleWarn) { console.warn('No slides found in', options.container); }
1222            return;
1223        }
1224
1225        // update options
1226        var responsive = options.responsive,
1227            nested = options.nested,
1228            carousel = options.mode === 'carousel' ? true : false;
1229
1230        if (responsive) {
1231            // apply responsive[0] to options and remove it
1232            if (0 in responsive) {
1233                options = extend(options, responsive[0]);
1234                delete responsive[0];
1235            }
1236
1237            var responsiveTem = {};
1238            for (var key in responsive) {
1239                var val = responsive[key];
1240                // update responsive
1241                // from: 300: 2
1242                // to:
1243                //   300: {
1244                //     items: 2
1245                //   }
1246                val = typeof val === 'number' ? {items: val} : val;
1247                responsiveTem[key] = val;
1248            }
1249            responsive = responsiveTem;
1250            responsiveTem = null;
1251        }
1252
1253        // update options
1254        function updateOptions (obj) {
1255            for (var key in obj) {
1256                if (!carousel) {
1257                    if (key === 'slideBy') { obj[key] = 'page'; }
1258                    if (key === 'edgePadding') { obj[key] = false; }
1259                    if (key === 'autoHeight') { obj[key] = false; }
1260                }
1261
1262                // update responsive options
1263                if (key === 'responsive') { updateOptions(obj[key]); }
1264            }
1265        }
1266        if (!carousel) { updateOptions(options); }
1267
1268
1269        // === define and set variables ===
1270        if (!carousel) {
1271            options.axis = 'horizontal';
1272            options.slideBy = 'page';
1273            options.edgePadding = false;
1274
1275            var animateIn = options.animateIn,
1276                animateOut = options.animateOut,
1277                animateDelay = options.animateDelay,
1278                animateNormal = options.animateNormal;
1279        }
1280
1281        var horizontal = options.axis === 'horizontal' ? true : false,
1282            outerWrapper = doc.createElement('div'),
1283            innerWrapper = doc.createElement('div'),
1284            middleWrapper,
1285            container = options.container,
1286            containerParent = container.parentNode,
1287            containerHTML = container.outerHTML,
1288            slideItems = container.children,
1289            slideCount = slideItems.length,
1290            breakpointZone,
1291            windowWidth = getWindowWidth(),
1292            isOn = false;
1293        if (responsive) { setBreakpointZone(); }
1294        if (carousel) { container.className += ' tns-vpfix'; }
1295
1296        // fixedWidth: viewport > rightBoundary > indexMax
1297        var autoWidth = options.autoWidth,
1298            fixedWidth = getOption('fixedWidth'),
1299            edgePadding = getOption('edgePadding'),
1300            gutter = getOption('gutter'),
1301            viewport = getViewportWidth(),
1302            center = getOption('center'),
1303            items = !autoWidth ? Math.floor(getOption('items')) : 1,
1304            slideBy = getOption('slideBy'),
1305            viewportMax = options.viewportMax || options.fixedWidthViewportWidth,
1306            arrowKeys = getOption('arrowKeys'),
1307            speed = getOption('speed'),
1308            rewind = options.rewind,
1309            loop = rewind ? false : options.loop,
1310            autoHeight = getOption('autoHeight'),
1311            controls = getOption('controls'),
1312            controlsText = getOption('controlsText'),
1313            nav = getOption('nav'),
1314            touch = getOption('touch'),
1315            mouseDrag = getOption('mouseDrag'),
1316            autoplay = getOption('autoplay'),
1317            autoplayTimeout = getOption('autoplayTimeout'),
1318            autoplayText = getOption('autoplayText'),
1319            autoplayHoverPause = getOption('autoplayHoverPause'),
1320            autoplayResetOnVisibility = getOption('autoplayResetOnVisibility'),
1321            sheet = createStyleSheet(null, getOption('nonce')),
1322            lazyload = options.lazyload,
1323            lazyloadSelector = options.lazyloadSelector,
1324            slidePositions, // collection of slide positions
1325            slideItemsOut = [],
1326            cloneCount = loop ? getCloneCountForLoop() : 0,
1327            slideCountNew = !carousel ? slideCount + cloneCount : slideCount + cloneCount * 2,
1328            hasRightDeadZone = (fixedWidth || autoWidth) && !loop ? true : false,
1329            rightBoundary = fixedWidth ? getRightBoundary() : null,
1330            updateIndexBeforeTransform = (!carousel || !loop) ? true : false,
1331            // transform
1332            transformAttr = horizontal ? 'left' : 'top',
1333            transformPrefix = '',
1334            transformPostfix = '',
1335            // index
1336            getIndexMax = (function () {
1337                if (fixedWidth) {
1338                    return function() { return center && !loop ? slideCount - 1 : Math.ceil(- rightBoundary / (fixedWidth + gutter)); };
1339                } else if (autoWidth) {
1340                    return function() {
1341                        for (var i = 0; i < slideCountNew; i++) {
1342                            if (slidePositions[i] >= - rightBoundary) { return i; }
1343                        }
1344                    };
1345                } else {
1346                    return function() {
1347                        if (center && carousel && !loop) {
1348                            return slideCount - 1;
1349                        } else {
1350                            return loop || carousel ? Math.max(0, slideCountNew - Math.ceil(items)) : slideCountNew - 1;
1351                        }
1352                    };
1353                }
1354            })(),
1355            index = getStartIndex(getOption('startIndex')),
1356            indexCached = index,
1357            displayIndex = getCurrentSlide(),
1358            indexMin = 0,
1359            indexMax = !autoWidth ? getIndexMax() : null,
1360            // resize
1361            resizeTimer,
1362            preventActionWhenRunning = options.preventActionWhenRunning,
1363            swipeAngle = options.swipeAngle,
1364            moveDirectionExpected = swipeAngle ? '?' : true,
1365            running = false,
1366            onInit = options.onInit,
1367            events = new Events(),
1368            // id, class
1369            newContainerClasses = ' tns-slider tns-' + options.mode,
1370            slideId = container.id || getSlideId(),
1371            disable = getOption('disable'),
1372            disabled = false,
1373            freezable = options.freezable,
1374            freeze = freezable && !autoWidth ? getFreeze() : false,
1375            frozen = false,
1376            controlsEvents = {
1377                'click': onControlsClick,
1378                'keydown': onControlsKeydown
1379            },
1380            navEvents = {
1381                'click': onNavClick,
1382                'keydown': onNavKeydown
1383            },
1384            hoverEvents = {
1385                'mouseover': mouseoverPause,
1386                'mouseout': mouseoutRestart
1387            },
1388            visibilityEvent = {'visibilitychange': onVisibilityChange},
1389            docmentKeydownEvent = {'keydown': onDocumentKeydown},
1390            touchEvents = {
1391                'touchstart': onPanStart,
1392                'touchmove': onPanMove,
1393                'touchend': onPanEnd,
1394                'touchcancel': onPanEnd
1395            }, dragEvents = {
1396                'mousedown': onPanStart,
1397                'mousemove': onPanMove,
1398                'mouseup': onPanEnd,
1399                'mouseleave': onPanEnd
1400            },
1401            hasControls = hasOption('controls'),
1402            hasNav = hasOption('nav'),
1403            navAsThumbnails = autoWidth ? true : options.navAsThumbnails,
1404            hasAutoplay = hasOption('autoplay'),
1405            hasTouch = hasOption('touch'),
1406            hasMouseDrag = hasOption('mouseDrag'),
1407            slideActiveClass = 'tns-slide-active',
1408            slideClonedClass = 'tns-slide-cloned',
1409            imgCompleteClass = 'tns-complete',
1410            imgEvents = {
1411                'load': onImgLoaded,
1412                'error': onImgFailed
1413            },
1414            imgsComplete,
1415            liveregionCurrent,
1416            preventScroll = options.preventScrollOnTouch === 'force' ? true : false;
1417
1418        // controls
1419        if (hasControls) {
1420            var controlsContainer = options.controlsContainer,
1421                controlsContainerHTML = options.controlsContainer ? options.controlsContainer.outerHTML : '',
1422                prevButton = options.prevButton,
1423                nextButton = options.nextButton,
1424                prevButtonHTML = options.prevButton ? options.prevButton.outerHTML : '',
1425                nextButtonHTML = options.nextButton ? options.nextButton.outerHTML : '',
1426                prevIsButton,
1427                nextIsButton;
1428        }
1429
1430        // nav
1431        if (hasNav) {
1432            var navContainer = options.navContainer,
1433                navContainerHTML = options.navContainer ? options.navContainer.outerHTML : '',
1434                navItems,
1435                pages = autoWidth ? slideCount : getPages(),
1436                pagesCached = 0,
1437                navClicked = -1,
1438                navCurrentIndex = getCurrentNavIndex(),
1439                navCurrentIndexCached = navCurrentIndex,
1440                navActiveClass = 'tns-nav-active',
1441                navStr = 'Carousel Page ',
1442                navStrCurrent = ' (Current Slide)';
1443        }
1444
1445        // autoplay
1446        if (hasAutoplay) {
1447            var autoplayDirection = options.autoplayDirection === 'forward' ? 1 : -1,
1448                autoplayButton = options.autoplayButton,
1449                autoplayButtonHTML = options.autoplayButton ? options.autoplayButton.outerHTML : '',
1450                autoplayHtmlStrings = ['<span class=\'tns-visually-hidden\'>', ' animation</span>'],
1451                autoplayTimer,
1452                animating,
1453                autoplayHoverPaused,
1454                autoplayUserPaused,
1455                autoplayVisibilityPaused;
1456        }
1457
1458        if (hasTouch || hasMouseDrag) {
1459            var initPosition = {},
1460                lastPosition = {},
1461                translateInit,
1462                disX,
1463                disY,
1464                panStart = false,
1465                rafIndex,
1466                getDist = horizontal ?
1467                    function(a, b) { return a.x - b.x; } :
1468                    function(a, b) { return a.y - b.y; };
1469        }
1470
1471        // disable slider when slidecount <= items
1472        if (!autoWidth) { resetVariblesWhenDisable(disable || freeze); }
1473
1474        if (TRANSFORM) {
1475            transformAttr = TRANSFORM;
1476            transformPrefix = 'translate';
1477
1478            if (HAS3DTRANSFORMS) {
1479                transformPrefix += horizontal ? '3d(' : '3d(0px, ';
1480                transformPostfix = horizontal ? ', 0px, 0px)' : ', 0px)';
1481            } else {
1482                transformPrefix += horizontal ? 'X(' : 'Y(';
1483                transformPostfix = ')';
1484            }
1485
1486        }
1487
1488        if (carousel) { container.className = container.className.replace('tns-vpfix', ''); }
1489        initStructure();
1490        initSheet();
1491        initSliderTransform();
1492
1493        // === COMMON FUNCTIONS === //
1494        function resetVariblesWhenDisable (condition) {
1495            if (condition) {
1496                controls = nav = touch = mouseDrag = arrowKeys = autoplay = autoplayHoverPause = autoplayResetOnVisibility = false;
1497            }
1498        }
1499
1500        function getCurrentSlide () {
1501            var tem = carousel ? index - cloneCount : index;
1502            while (tem < 0) { tem += slideCount; }
1503            return tem%slideCount + 1;
1504        }
1505
1506        function getStartIndex (ind) {
1507            ind = ind ? Math.max(0, Math.min(loop ? slideCount - 1 : slideCount - items, ind)) : 0;
1508            return carousel ? ind + cloneCount : ind;
1509        }
1510
1511        function getAbsIndex (i) {
1512            if (i == null) { i = index; }
1513
1514            if (carousel) { i -= cloneCount; }
1515            while (i < 0) { i += slideCount; }
1516
1517            return Math.floor(i%slideCount);
1518        }
1519
1520        function getCurrentNavIndex () {
1521            var absIndex = getAbsIndex(),
1522                result;
1523
1524            result = navAsThumbnails ? absIndex :
1525                fixedWidth || autoWidth ? Math.ceil((absIndex + 1) * pages / slideCount - 1) :
1526                    Math.floor(absIndex / items);
1527
1528            // set active nav to the last one when reaches the right edge
1529            if (!loop && carousel && index === indexMax) { result = pages - 1; }
1530
1531            return result;
1532        }
1533
1534        function getItemsMax () {
1535            // fixedWidth or autoWidth while viewportMax is not available
1536            if (autoWidth || (fixedWidth && !viewportMax)) {
1537                return slideCount - 1;
1538                // most cases
1539            } else {
1540                var str = fixedWidth ? 'fixedWidth' : 'items',
1541                    arr = [];
1542
1543                if (fixedWidth || options[str] < slideCount) { arr.push(options[str]); }
1544
1545                if (responsive) {
1546                    for (var bp in responsive) {
1547                        var tem = responsive[bp][str];
1548                        if (tem && (fixedWidth || tem < slideCount)) { arr.push(tem); }
1549                    }
1550                }
1551
1552                if (!arr.length) { arr.push(0); }
1553
1554                return Math.ceil(fixedWidth ? viewportMax / Math.min.apply(null, arr) : Math.max.apply(null, arr));
1555            }
1556        }
1557
1558        function getCloneCountForLoop () {
1559            var itemsMax = getItemsMax(),
1560                result = carousel ? Math.ceil((itemsMax * 5 - slideCount)/2) : (itemsMax * 4 - slideCount);
1561            result = Math.max(itemsMax, result);
1562
1563            return hasOption('edgePadding') ? result + 1 : result;
1564        }
1565
1566        function getWindowWidth () {
1567            return win.innerWidth || doc.documentElement.clientWidth || doc.body.clientWidth;
1568        }
1569
1570        function getInsertPosition (pos) {
1571            return pos === 'top' ? 'afterbegin' : 'beforeend';
1572        }
1573
1574        function getClientWidth (el) {
1575            if (el == null) { return; }
1576            var div = doc.createElement('div'), rect, width;
1577            el.appendChild(div);
1578            rect = div.getBoundingClientRect();
1579            width = rect.right - rect.left;
1580            div.remove();
1581            return width || getClientWidth(el.parentNode);
1582        }
1583
1584        function getViewportWidth () {
1585            var gap = edgePadding ? edgePadding * 2 - gutter : 0;
1586            return getClientWidth(containerParent) - gap;
1587        }
1588
1589        function hasOption (item) {
1590            if (options[item]) {
1591                return true;
1592            } else {
1593                if (responsive) {
1594                    for (var bp in responsive) {
1595                        if (responsive[bp][item]) { return true; }
1596                    }
1597                }
1598                return false;
1599            }
1600        }
1601
1602        // get option:
1603        // fixed width: viewport, fixedWidth, gutter => items
1604        // others: window width => all variables
1605        // all: items => slideBy
1606        function getOption (item, ww) {
1607            if (ww == null) { ww = windowWidth; }
1608
1609            if (item === 'items' && fixedWidth) {
1610                return Math.floor((viewport + gutter) / (fixedWidth + gutter)) || 1;
1611
1612            } else {
1613                var result = options[item];
1614
1615                if (responsive) {
1616                    for (var bp in responsive) {
1617                        // bp: convert string to number
1618                        if (ww >= parseInt(bp)) {
1619                            if (item in responsive[bp]) { result = responsive[bp][item]; }
1620                        }
1621                    }
1622                }
1623
1624                if (item === 'slideBy' && result === 'page') { result = getOption('items'); }
1625                if (!carousel && (item === 'slideBy' || item === 'items')) { result = Math.floor(result); }
1626
1627                return result;
1628            }
1629        }
1630
1631        function getSlideMarginLeft (i) {
1632            return CALC ?
1633                CALC + '(' + i * 100 + '% / ' + slideCountNew + ')' :
1634                i * 100 / slideCountNew + '%';
1635        }
1636
1637        function getInnerWrapperStyles (edgePaddingTem, gutterTem, fixedWidthTem, speedTem, autoHeightBP) {
1638            var str = '';
1639
1640            if (edgePaddingTem !== undefined) {
1641                var gap = edgePaddingTem;
1642                if (gutterTem) { gap -= gutterTem; }
1643                str = horizontal ?
1644                    'margin: 0 ' + gap + 'px 0 ' + edgePaddingTem + 'px;' :
1645                    'margin: ' + edgePaddingTem + 'px 0 ' + gap + 'px 0;';
1646            } else if (gutterTem && !fixedWidthTem) {
1647                var gutterTemUnit = '-' + gutterTem + 'px',
1648                    dir = horizontal ? gutterTemUnit + ' 0 0' : '0 ' + gutterTemUnit + ' 0';
1649                str = 'margin: 0 ' + dir + ';';
1650            }
1651
1652            if (!carousel && autoHeightBP && TRANSITIONDURATION && speedTem) { str += getTransitionDurationStyle(speedTem); }
1653            return str;
1654        }
1655
1656        function getContainerWidth (fixedWidthTem, gutterTem, itemsTem) {
1657            if (fixedWidthTem) {
1658                return (fixedWidthTem + gutterTem) * slideCountNew + 'px';
1659            } else {
1660                return CALC ?
1661                    CALC + '(' + slideCountNew * 100 + '% / ' + itemsTem + ')' :
1662                    slideCountNew * 100 / itemsTem + '%';
1663            }
1664        }
1665
1666        function getSlideWidthStyle (fixedWidthTem, gutterTem, itemsTem) {
1667            var width;
1668
1669            if (fixedWidthTem) {
1670                width = (fixedWidthTem + gutterTem) + 'px';
1671            } else {
1672                if (!carousel) { itemsTem = Math.floor(itemsTem); }
1673                var dividend = carousel ? slideCountNew : itemsTem;
1674                width = CALC ?
1675                    CALC + '(100% / ' + dividend + ')' :
1676                    100 / dividend + '%';
1677            }
1678
1679            width = 'width:' + width;
1680
1681            // inner slider: overwrite outer slider styles
1682            return nested !== 'inner' ? width + ';' : width + ' !important;';
1683        }
1684
1685        function getSlideGutterStyle (gutterTem) {
1686            var str = '';
1687
1688            // gutter maybe interger || 0
1689            // so can't use 'if (gutter)'
1690            if (gutterTem !== false) {
1691                var prop = horizontal ? 'padding-' : 'margin-',
1692                    dir = horizontal ? 'right' : 'bottom';
1693                str = prop +  dir + ': ' + gutterTem + 'px;';
1694            }
1695
1696            return str;
1697        }
1698
1699        function getCSSPrefix (name, num) {
1700            var prefix = name.substring(0, name.length - num).toLowerCase();
1701            if (prefix) { prefix = '-' + prefix + '-'; }
1702
1703            return prefix;
1704        }
1705
1706        function getTransitionDurationStyle (speed) {
1707            return getCSSPrefix(TRANSITIONDURATION, 18) + 'transition-duration:' + speed / 1000 + 's;';
1708        }
1709
1710        function getAnimationDurationStyle (speed) {
1711            return getCSSPrefix(ANIMATIONDURATION, 17) + 'animation-duration:' + speed / 1000 + 's;';
1712        }
1713
1714        function initStructure () {
1715            var classOuter = 'tns-outer',
1716                classInner = 'tns-inner',
1717                hasGutter = hasOption('gutter');
1718
1719            outerWrapper.className = classOuter;
1720            innerWrapper.className = classInner;
1721            outerWrapper.id = slideId + '-ow';
1722            innerWrapper.id = slideId + '-iw';
1723
1724            // set container properties
1725            if (container.id === '') { container.id = slideId; }
1726            newContainerClasses += PERCENTAGELAYOUT || autoWidth ? ' tns-subpixel' : ' tns-no-subpixel';
1727            newContainerClasses += CALC ? ' tns-calc' : ' tns-no-calc';
1728            if (autoWidth) { newContainerClasses += ' tns-autowidth'; }
1729            newContainerClasses += ' tns-' + options.axis;
1730            container.className += newContainerClasses;
1731
1732            // add constrain layer for carousel
1733            if (carousel) {
1734                middleWrapper = doc.createElement('div');
1735                middleWrapper.id = slideId + '-mw';
1736                middleWrapper.className = 'tns-ovh';
1737
1738                outerWrapper.appendChild(middleWrapper);
1739                middleWrapper.appendChild(innerWrapper);
1740            } else {
1741                outerWrapper.appendChild(innerWrapper);
1742            }
1743
1744            if (autoHeight) {
1745                var wp = middleWrapper ? middleWrapper : innerWrapper;
1746                wp.className += ' tns-ah';
1747            }
1748
1749            containerParent.insertBefore(outerWrapper, container);
1750            innerWrapper.appendChild(container);
1751
1752            // add id, class, aria attributes
1753            // before clone slides
1754            forEach(slideItems, function(item, i) {
1755                addClass(item, 'tns-item');
1756                if (!item.id) { item.id = slideId + '-item' + i; }
1757                if (!carousel && animateNormal) { addClass(item, animateNormal); }
1758                setAttrs(item, {
1759                    'aria-hidden': 'true',
1760                    'tabindex': '-1'
1761                });
1762            });
1763
1764            // ## clone slides
1765            // carousel: n + slides + n
1766            // gallery:      slides + n
1767            if (cloneCount) {
1768                var fragmentBefore = doc.createDocumentFragment(),
1769                    fragmentAfter = doc.createDocumentFragment();
1770
1771                for (var j = cloneCount; j--;) {
1772                    var num = j%slideCount,
1773                        cloneFirst = slideItems[num].cloneNode(true);
1774                    addClass(cloneFirst, slideClonedClass);
1775                    removeAttrs(cloneFirst, 'id');
1776                    fragmentAfter.insertBefore(cloneFirst, fragmentAfter.firstChild);
1777
1778                    if (carousel) {
1779                        var cloneLast = slideItems[slideCount - 1 - num].cloneNode(true);
1780                        addClass(cloneLast, slideClonedClass);
1781                        removeAttrs(cloneLast, 'id');
1782                        fragmentBefore.appendChild(cloneLast);
1783                    }
1784                }
1785
1786                container.insertBefore(fragmentBefore, container.firstChild);
1787                container.appendChild(fragmentAfter);
1788                slideItems = container.children;
1789            }
1790
1791        }
1792
1793        function initSliderTransform () {
1794            // ## images loaded/failed
1795            if (hasOption('autoHeight') || autoWidth || !horizontal) {
1796                var imgs = container.querySelectorAll('img');
1797
1798                // add img load event listener
1799                forEach(imgs, function(img) {
1800                    var src = img.src;
1801
1802                    if (!lazyload) {
1803                        // not data img
1804                        if (src && src.indexOf('data:image') < 0) {
1805                            img.src = '';
1806                            addEvents(img, imgEvents);
1807                            addClass(img, 'loading');
1808
1809                            img.src = src;
1810                            // data img
1811                        } else {
1812                            imgLoaded(img);
1813                        }
1814                    }
1815                });
1816
1817                // set imgsComplete
1818                raf(function(){ imgsLoadedCheck(arrayFromNodeList(imgs), function() { imgsComplete = true; }); });
1819
1820                // reset imgs for auto height: check visible imgs only
1821                if (hasOption('autoHeight')) { imgs = getImageArray(index, Math.min(index + items - 1, slideCountNew - 1)); }
1822
1823                lazyload ? initSliderTransformStyleCheck() : raf(function(){ imgsLoadedCheck(arrayFromNodeList(imgs), initSliderTransformStyleCheck); });
1824
1825            } else {
1826                // set container transform property
1827                if (carousel) { doContainerTransformSilent(); }
1828
1829                // update slider tools and events
1830                initTools();
1831                initEvents();
1832            }
1833        }
1834
1835        function initSliderTransformStyleCheck () {
1836            if (autoWidth && slideCount > 1) {
1837                // check styles application
1838                var num = loop ? index : slideCount - 1;
1839
1840                (function stylesApplicationCheck() {
1841                    var left = slideItems[num].getBoundingClientRect().left;
1842                    var right = slideItems[num - 1].getBoundingClientRect().right;
1843
1844                    (Math.abs(left - right) <= 1) ?
1845                        initSliderTransformCore() :
1846                        setTimeout(function(){ stylesApplicationCheck(); }, 16);
1847                })();
1848
1849            } else {
1850                initSliderTransformCore();
1851            }
1852        }
1853
1854
1855        function initSliderTransformCore () {
1856            // run Fn()s which are rely on image loading
1857            if (!horizontal || autoWidth) {
1858                setSlidePositions();
1859
1860                if (autoWidth) {
1861                    rightBoundary = getRightBoundary();
1862                    if (freezable) { freeze = getFreeze(); }
1863                    indexMax = getIndexMax(); // <= slidePositions, rightBoundary <=
1864                    resetVariblesWhenDisable(disable || freeze);
1865                } else {
1866                    updateContentWrapperHeight();
1867                }
1868            }
1869
1870            // set container transform property
1871            if (carousel) { doContainerTransformSilent(); }
1872
1873            // update slider tools and events
1874            initTools();
1875            initEvents();
1876        }
1877
1878        function initSheet () {
1879            // gallery:
1880            // set animation classes and left value for gallery slider
1881            if (!carousel) {
1882                for (var i = index, l = index + Math.min(slideCount, items); i < l; i++) {
1883                    var item = slideItems[i];
1884                    item.style.left = (i - index) * 100 / items + '%';
1885                    addClass(item, animateIn);
1886                    removeClass(item, animateNormal);
1887                }
1888            }
1889
1890            // #### LAYOUT
1891
1892            // ## INLINE-BLOCK VS FLOAT
1893
1894            // ## PercentageLayout:
1895            // slides: inline-block
1896            // remove blank space between slides by set font-size: 0
1897
1898            // ## Non PercentageLayout:
1899            // slides: float
1900            //         margin-right: -100%
1901            //         margin-left: ~
1902
1903            // Resource: https://docs.google.com/spreadsheets/d/147up245wwTXeQYve3BRSAD4oVcvQmuGsFteJOeA5xNQ/edit?usp=sharing
1904            if (horizontal) {
1905                if (PERCENTAGELAYOUT || autoWidth) {
1906                    addCSSRule(sheet, '#' + slideId + ' > .tns-item', 'font-size:' + win.getComputedStyle(slideItems[0]).fontSize + ';', getCssRulesLength(sheet));
1907                    addCSSRule(sheet, '#' + slideId, 'font-size:0;', getCssRulesLength(sheet));
1908                } else if (carousel) {
1909                    forEach(slideItems, function (slide, i) {
1910                        slide.style.marginLeft = getSlideMarginLeft(i);
1911                    });
1912                }
1913            }
1914
1915
1916            // ## BASIC STYLES
1917            if (CSSMQ) {
1918                // middle wrapper style
1919                if (TRANSITIONDURATION) {
1920                    var str = middleWrapper && options.autoHeight ? getTransitionDurationStyle(options.speed) : '';
1921                    addCSSRule(sheet, '#' + slideId + '-mw', str, getCssRulesLength(sheet));
1922                }
1923
1924                // inner wrapper styles
1925                str = getInnerWrapperStyles(options.edgePadding, options.gutter, options.fixedWidth, options.speed, options.autoHeight);
1926                addCSSRule(sheet, '#' + slideId + '-iw', str, getCssRulesLength(sheet));
1927
1928                // container styles
1929                if (carousel) {
1930                    str = horizontal && !autoWidth ? 'width:' + getContainerWidth(options.fixedWidth, options.gutter, options.items) + ';' : '';
1931                    if (TRANSITIONDURATION) { str += getTransitionDurationStyle(speed); }
1932                    addCSSRule(sheet, '#' + slideId, str, getCssRulesLength(sheet));
1933                }
1934
1935                // slide styles
1936                str = horizontal && !autoWidth ? getSlideWidthStyle(options.fixedWidth, options.gutter, options.items) : '';
1937                if (options.gutter) { str += getSlideGutterStyle(options.gutter); }
1938                // set gallery items transition-duration
1939                if (!carousel) {
1940                    if (TRANSITIONDURATION) { str += getTransitionDurationStyle(speed); }
1941                    if (ANIMATIONDURATION) { str += getAnimationDurationStyle(speed); }
1942                }
1943                if (str) { addCSSRule(sheet, '#' + slideId + ' > .tns-item', str, getCssRulesLength(sheet)); }
1944
1945                // non CSS mediaqueries: IE8
1946                // ## update inner wrapper, container, slides if needed
1947                // set inline styles for inner wrapper & container
1948                // insert stylesheet (one line) for slides only (since slides are many)
1949            } else {
1950                // middle wrapper styles
1951                update_carousel_transition_duration();
1952
1953                // inner wrapper styles
1954                innerWrapper.style.cssText = getInnerWrapperStyles(edgePadding, gutter, fixedWidth, autoHeight);
1955
1956                // container styles
1957                if (carousel && horizontal && !autoWidth) {
1958                    container.style.width = getContainerWidth(fixedWidth, gutter, items);
1959                }
1960
1961                // slide styles
1962                var str = horizontal && !autoWidth ? getSlideWidthStyle(fixedWidth, gutter, items) : '';
1963                if (gutter) { str += getSlideGutterStyle(gutter); }
1964
1965                // append to the last line
1966                if (str) { addCSSRule(sheet, '#' + slideId + ' > .tns-item', str, getCssRulesLength(sheet)); }
1967            }
1968
1969            // ## MEDIAQUERIES
1970            if (responsive && CSSMQ) {
1971                for (var bp in responsive) {
1972                    // bp: convert string to number
1973                    bp = parseInt(bp);
1974
1975                    var opts = responsive[bp],
1976                        str = '',
1977                        middleWrapperStr = '',
1978                        innerWrapperStr = '',
1979                        containerStr = '',
1980                        slideStr = '',
1981                        itemsBP = !autoWidth ? getOption('items', bp) : null,
1982                        fixedWidthBP = getOption('fixedWidth', bp),
1983                        speedBP = getOption('speed', bp),
1984                        edgePaddingBP = getOption('edgePadding', bp),
1985                        autoHeightBP = getOption('autoHeight', bp),
1986                        gutterBP = getOption('gutter', bp);
1987
1988                    // middle wrapper string
1989                    if (TRANSITIONDURATION && middleWrapper && getOption('autoHeight', bp) && 'speed' in opts) {
1990                        middleWrapperStr = '#' + slideId + '-mw{' + getTransitionDurationStyle(speedBP) + '}';
1991                    }
1992
1993                    // inner wrapper string
1994                    if ('edgePadding' in opts || 'gutter' in opts) {
1995                        innerWrapperStr = '#' + slideId + '-iw{' + getInnerWrapperStyles(edgePaddingBP, gutterBP, fixedWidthBP, speedBP, autoHeightBP) + '}';
1996                    }
1997
1998                    // container string
1999                    if (carousel && horizontal && !autoWidth && ('fixedWidth' in opts || 'items' in opts || (fixedWidth && 'gutter' in opts))) {
2000                        containerStr = 'width:' + getContainerWidth(fixedWidthBP, gutterBP, itemsBP) + ';';
2001                    }
2002                    if (TRANSITIONDURATION && 'speed' in opts) {
2003                        containerStr += getTransitionDurationStyle(speedBP);
2004                    }
2005                    if (containerStr) {
2006                        containerStr = '#' + slideId + '{' + containerStr + '}';
2007                    }
2008
2009                    // slide string
2010                    if ('fixedWidth' in opts || (fixedWidth && 'gutter' in opts) || !carousel && 'items' in opts) {
2011                        slideStr += getSlideWidthStyle(fixedWidthBP, gutterBP, itemsBP);
2012                    }
2013                    if ('gutter' in opts) {
2014                        slideStr += getSlideGutterStyle(gutterBP);
2015                    }
2016                    // set gallery items transition-duration
2017                    if (!carousel && 'speed' in opts) {
2018                        if (TRANSITIONDURATION) { slideStr += getTransitionDurationStyle(speedBP); }
2019                        if (ANIMATIONDURATION) { slideStr += getAnimationDurationStyle(speedBP); }
2020                    }
2021                    if (slideStr) { slideStr = '#' + slideId + ' > .tns-item{' + slideStr + '}'; }
2022
2023                    // add up
2024                    str = middleWrapperStr + innerWrapperStr + containerStr + slideStr;
2025
2026                    if (str) {
2027                        sheet.insertRule('@media (min-width: ' + bp / 16 + 'em) {' + str + '}', sheet.cssRules.length);
2028                    }
2029                }
2030            }
2031        }
2032
2033        function initTools () {
2034            // == slides ==
2035            updateSlideStatus();
2036
2037            // == live region ==
2038            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>');
2039            liveregionCurrent = outerWrapper.querySelector('.tns-liveregion .current');
2040
2041            // == autoplayInit ==
2042            if (hasAutoplay) {
2043                var txt = autoplay ? 'stop' : 'start';
2044                if (autoplayButton) {
2045                    setAttrs(autoplayButton, {'data-action': txt});
2046                } else if (options.autoplayButtonOutput) {
2047                    outerWrapper.insertAdjacentHTML(getInsertPosition(options.autoplayPosition), '<button type="button" data-action="' + txt + '">' + autoplayHtmlStrings[0] + txt + autoplayHtmlStrings[1] + autoplayText[0] + '</button>');
2048                    autoplayButton = outerWrapper.querySelector('[data-action]');
2049                }
2050
2051                // add event
2052                if (autoplayButton) {
2053                    addEvents(autoplayButton, {'click': toggleAutoplay});
2054                }
2055
2056                if (autoplay) {
2057                    startAutoplay();
2058                    if (autoplayHoverPause) { addEvents(container, hoverEvents); }
2059                    if (autoplayResetOnVisibility) { addEvents(container, visibilityEvent); }
2060                }
2061            }
2062
2063            // == navInit ==
2064            if (hasNav) {
2065                var initIndex = !carousel ? 0 : cloneCount;
2066                // customized nav
2067                // will not hide the navs in case they're thumbnails
2068                if (navContainer) {
2069                    setAttrs(navContainer, {'aria-label': 'Carousel Pagination'});
2070                    navItems = navContainer.children;
2071                    forEach(navItems, function(item, i) {
2072                        setAttrs(item, {
2073                            'data-nav': i,
2074                            'tabindex': '-1',
2075                            'aria-label': navStr + (i + 1),
2076                            'aria-controls': slideId,
2077                        });
2078                    });
2079
2080                    // generated nav
2081                } else {
2082                    var navHtml = '',
2083                        hiddenStr = navAsThumbnails ? '' : 'style="display:none"';
2084                    for (var i = 0; i < slideCount; i++) {
2085                        // hide nav items by default
2086                        navHtml += '<button type="button" data-nav="' + i +'" tabindex="-1" aria-controls="' + slideId + '" ' + hiddenStr + ' aria-label="' + navStr + (i + 1) +'"></button>';
2087                    }
2088                    navHtml = '<div class="tns-nav" aria-label="Carousel Pagination">' + navHtml + '</div>';
2089                    outerWrapper.insertAdjacentHTML(getInsertPosition(options.navPosition), navHtml);
2090
2091                    navContainer = outerWrapper.querySelector('.tns-nav');
2092                    navItems = navContainer.children;
2093                }
2094
2095                updateNavVisibility();
2096
2097                // add transition
2098                if (TRANSITIONDURATION) {
2099                    var prefix = TRANSITIONDURATION.substring(0, TRANSITIONDURATION.length - 18).toLowerCase(),
2100                        str = 'transition: all ' + speed / 1000 + 's';
2101
2102                    if (prefix) {
2103                        str = '-' + prefix + '-' + str;
2104                    }
2105
2106                    addCSSRule(sheet, '[aria-controls^=' + slideId + '-item]', str, getCssRulesLength(sheet));
2107                }
2108
2109                setAttrs(navItems[navCurrentIndex], {'aria-label': navStr + (navCurrentIndex + 1) + navStrCurrent});
2110                removeAttrs(navItems[navCurrentIndex], 'tabindex');
2111                addClass(navItems[navCurrentIndex], navActiveClass);
2112
2113                // add events
2114                addEvents(navContainer, navEvents);
2115            }
2116
2117
2118
2119            // == controlsInit ==
2120            if (hasControls) {
2121                if (!controlsContainer && (!prevButton || !nextButton)) {
2122                    outerWrapper.insertAdjacentHTML(getInsertPosition(options.controlsPosition), '<div class="tns-controls" aria-label="Carousel Navigation" tabindex="0"><button type="button" data-controls="prev" tabindex="-1" aria-controls="' + slideId +'">' + controlsText[0] + '</button><button type="button" data-controls="next" tabindex="-1" aria-controls="' + slideId +'">' + controlsText[1] + '</button></div>');
2123
2124                    controlsContainer = outerWrapper.querySelector('.tns-controls');
2125                }
2126
2127                if (!prevButton || !nextButton) {
2128                    prevButton = controlsContainer.children[0];
2129                    nextButton = controlsContainer.children[1];
2130                }
2131
2132                if (options.controlsContainer) {
2133                    setAttrs(controlsContainer, {
2134                        'aria-label': 'Carousel Navigation',
2135                        'tabindex': '0'
2136                    });
2137                }
2138
2139                if (options.controlsContainer || (options.prevButton && options.nextButton)) {
2140                    setAttrs([prevButton, nextButton], {
2141                        'aria-controls': slideId,
2142                        'tabindex': '-1',
2143                    });
2144                }
2145
2146                if (options.controlsContainer || (options.prevButton && options.nextButton)) {
2147                    setAttrs(prevButton, {'data-controls' : 'prev'});
2148                    setAttrs(nextButton, {'data-controls' : 'next'});
2149                }
2150
2151                prevIsButton = isButton(prevButton);
2152                nextIsButton = isButton(nextButton);
2153
2154                updateControlsStatus();
2155
2156                // add events
2157                if (controlsContainer) {
2158                    addEvents(controlsContainer, controlsEvents);
2159                } else {
2160                    addEvents(prevButton, controlsEvents);
2161                    addEvents(nextButton, controlsEvents);
2162                }
2163            }
2164
2165            // hide tools if needed
2166            disableUI();
2167        }
2168
2169        function initEvents () {
2170            // add events
2171            if (carousel && TRANSITIONEND) {
2172                var eve = {};
2173                eve[TRANSITIONEND] = onTransitionEnd;
2174                addEvents(container, eve);
2175            }
2176
2177            if (touch) { addEvents(container, touchEvents, options.preventScrollOnTouch); }
2178            if (mouseDrag) { addEvents(container, dragEvents); }
2179            if (arrowKeys) { addEvents(doc, docmentKeydownEvent); }
2180
2181            if (nested === 'inner') {
2182                events.on('outerResized', function () {
2183                    resizeTasks();
2184                    events.emit('innerLoaded', info());
2185                });
2186            } else if (responsive || fixedWidth || autoWidth || autoHeight || !horizontal) {
2187                addEvents(win, {'resize': onResize});
2188            }
2189
2190            if (autoHeight) {
2191                if (nested === 'outer') {
2192                    events.on('innerLoaded', doAutoHeight);
2193                } else if (!disable) { doAutoHeight(); }
2194            }
2195
2196            doLazyLoad();
2197            if (disable) { disableSlider(); } else if (freeze) { freezeSlider(); }
2198
2199            events.on('indexChanged', additionalUpdates);
2200            if (nested === 'inner') { events.emit('innerLoaded', info()); }
2201            if (typeof onInit === 'function') { onInit(info()); }
2202            isOn = true;
2203        }
2204
2205        function destroy () {
2206            // sheet
2207            sheet.disabled = true;
2208            if (sheet.ownerNode) { sheet.ownerNode.remove(); }
2209
2210            // remove win event listeners
2211            removeEvents(win, {'resize': onResize});
2212
2213            // arrowKeys, controls, nav
2214            if (arrowKeys) { removeEvents(doc, docmentKeydownEvent); }
2215            if (controlsContainer) { removeEvents(controlsContainer, controlsEvents); }
2216            if (navContainer) { removeEvents(navContainer, navEvents); }
2217
2218            // autoplay
2219            removeEvents(container, hoverEvents);
2220            removeEvents(container, visibilityEvent);
2221            if (autoplayButton) { removeEvents(autoplayButton, {'click': toggleAutoplay}); }
2222            if (autoplay) { clearInterval(autoplayTimer); }
2223
2224            // container
2225            if (carousel && TRANSITIONEND) {
2226                var eve = {};
2227                eve[TRANSITIONEND] = onTransitionEnd;
2228                removeEvents(container, eve);
2229            }
2230            if (touch) { removeEvents(container, touchEvents); }
2231            if (mouseDrag) { removeEvents(container, dragEvents); }
2232
2233            // cache Object values in options && reset HTML
2234            var htmlList = [containerHTML, controlsContainerHTML, prevButtonHTML, nextButtonHTML, navContainerHTML, autoplayButtonHTML];
2235
2236            tnsList.forEach(function(item, i) {
2237                var el = item === 'container' ? outerWrapper : options[item];
2238
2239                if (typeof el === 'object' && el) {
2240                    var prevEl = el.previousElementSibling ? el.previousElementSibling : false,
2241                        parentEl = el.parentNode;
2242                    el.outerHTML = htmlList[i];
2243                    options[item] = prevEl ? prevEl.nextElementSibling : parentEl.firstElementChild;
2244                }
2245            });
2246
2247
2248            // reset variables
2249            tnsList = animateIn = animateOut = animateDelay = animateNormal = horizontal = outerWrapper = innerWrapper = container = containerParent = containerHTML = slideItems = slideCount = breakpointZone = windowWidth = autoWidth = fixedWidth = edgePadding = gutter = viewport = items = slideBy = viewportMax = arrowKeys = speed = rewind = loop = autoHeight = sheet = lazyload = slidePositions = slideItemsOut = cloneCount = slideCountNew = hasRightDeadZone = rightBoundary = updateIndexBeforeTransform = transformAttr = transformPrefix = transformPostfix = getIndexMax = index = indexCached = indexMin = indexMax = resizeTimer = swipeAngle = moveDirectionExpected = running = onInit = events = newContainerClasses = slideId = disable = disabled = freezable = freeze = frozen = controlsEvents = navEvents = hoverEvents = visibilityEvent = docmentKeydownEvent = touchEvents = dragEvents = hasControls = hasNav = navAsThumbnails = hasAutoplay = hasTouch = hasMouseDrag = slideActiveClass = imgCompleteClass = imgEvents = imgsComplete = controls = controlsText = controlsContainer = controlsContainerHTML = prevButton = nextButton = prevIsButton = nextIsButton = nav = navContainer = navContainerHTML = navItems = pages = pagesCached = navClicked = navCurrentIndex = navCurrentIndexCached = navActiveClass = navStr = navStrCurrent = autoplay = autoplayTimeout = autoplayDirection = autoplayText = autoplayHoverPause = autoplayButton = autoplayButtonHTML = autoplayResetOnVisibility = autoplayHtmlStrings = autoplayTimer = animating = autoplayHoverPaused = autoplayUserPaused = autoplayVisibilityPaused = initPosition = lastPosition = translateInit = disX = disY = panStart = rafIndex = getDist = touch = mouseDrag = null;
2250            // check variables
2251            // [animateIn, animateOut, animateDelay, animateNormal, horizontal, outerWrapper, innerWrapper, container, containerParent, containerHTML, slideItems, slideCount, breakpointZone, windowWidth, autoWidth, fixedWidth, edgePadding, gutter, viewport, items, slideBy, viewportMax, arrowKeys, speed, rewind, loop, autoHeight, sheet, lazyload, slidePositions, slideItemsOut, cloneCount, slideCountNew, hasRightDeadZone, rightBoundary, updateIndexBeforeTransform, transformAttr, transformPrefix, transformPostfix, getIndexMax, index, indexCached, indexMin, indexMax, resizeTimer, swipeAngle, moveDirectionExpected, running, onInit, events, newContainerClasses, slideId, disable, disabled, freezable, freeze, frozen, controlsEvents, navEvents, hoverEvents, visibilityEvent, docmentKeydownEvent, touchEvents, dragEvents, hasControls, hasNav, navAsThumbnails, hasAutoplay, hasTouch, hasMouseDrag, slideActiveClass, imgCompleteClass, imgEvents, imgsComplete, controls, controlsText, controlsContainer, controlsContainerHTML, prevButton, nextButton, prevIsButton, nextIsButton, nav, navContainer, navContainerHTML, navItems, pages, pagesCached, navClicked, navCurrentIndex, navCurrentIndexCached, navActiveClass, navStr, navStrCurrent, autoplay, autoplayTimeout, autoplayDirection, autoplayText, autoplayHoverPause, autoplayButton, autoplayButtonHTML, autoplayResetOnVisibility, autoplayHtmlStrings, autoplayTimer, animating, autoplayHoverPaused, autoplayUserPaused, autoplayVisibilityPaused, initPosition, lastPosition, translateInit, disX, disY, panStart, rafIndex, getDist, touch, mouseDrag ].forEach(function(item) { if (item !== null) { console.log(item); } });
2252
2253            for (var a in this) {
2254                if (a !== 'rebuild') { this[a] = null; }
2255            }
2256            isOn = false;
2257        }
2258
2259// === ON RESIZE ===
2260        // responsive || fixedWidth || autoWidth || !horizontal
2261        function onResize (e) {
2262            raf(function(){ resizeTasks(getEvent(e)); });
2263        }
2264
2265        function resizeTasks (e) {
2266            if (!isOn) { return; }
2267            if (nested === 'outer') { events.emit('outerResized', info(e)); }
2268            windowWidth = getWindowWidth();
2269            var bpChanged,
2270                breakpointZoneTem = breakpointZone,
2271                needContainerTransform = false;
2272
2273            if (responsive) {
2274                setBreakpointZone();
2275                bpChanged = breakpointZoneTem !== breakpointZone;
2276                // if (hasRightDeadZone) { needContainerTransform = true; } // *?
2277                if (bpChanged) { events.emit('newBreakpointStart', info(e)); }
2278            }
2279
2280            var indChanged,
2281                itemsChanged,
2282                itemsTem = items,
2283                disableTem = disable,
2284                freezeTem = freeze,
2285                arrowKeysTem = arrowKeys,
2286                controlsTem = controls,
2287                navTem = nav,
2288                touchTem = touch,
2289                mouseDragTem = mouseDrag,
2290                autoplayTem = autoplay,
2291                autoplayHoverPauseTem = autoplayHoverPause,
2292                autoplayResetOnVisibilityTem = autoplayResetOnVisibility,
2293                indexTem = index;
2294
2295            if (bpChanged) {
2296                var fixedWidthTem = fixedWidth,
2297                    autoHeightTem = autoHeight,
2298                    controlsTextTem = controlsText,
2299                    centerTem = center,
2300                    autoplayTextTem = autoplayText;
2301
2302                if (!CSSMQ) {
2303                    var gutterTem = gutter,
2304                        edgePaddingTem = edgePadding;
2305                }
2306            }
2307
2308            // get option:
2309            // fixed width: viewport, fixedWidth, gutter => items
2310            // others: window width => all variables
2311            // all: items => slideBy
2312            arrowKeys = getOption('arrowKeys');
2313            controls = getOption('controls');
2314            nav = getOption('nav');
2315            touch = getOption('touch');
2316            center = getOption('center');
2317            mouseDrag = getOption('mouseDrag');
2318            autoplay = getOption('autoplay');
2319            autoplayHoverPause = getOption('autoplayHoverPause');
2320            autoplayResetOnVisibility = getOption('autoplayResetOnVisibility');
2321
2322            if (bpChanged) {
2323                disable = getOption('disable');
2324                fixedWidth = getOption('fixedWidth');
2325                speed = getOption('speed');
2326                autoHeight = getOption('autoHeight');
2327                controlsText = getOption('controlsText');
2328                autoplayText = getOption('autoplayText');
2329                autoplayTimeout = getOption('autoplayTimeout');
2330
2331                if (!CSSMQ) {
2332                    edgePadding = getOption('edgePadding');
2333                    gutter = getOption('gutter');
2334                }
2335            }
2336            // update options
2337            resetVariblesWhenDisable(disable);
2338
2339            viewport = getViewportWidth(); // <= edgePadding, gutter
2340            if ((!horizontal || autoWidth) && !disable) {
2341                setSlidePositions();
2342                if (!horizontal) {
2343                    updateContentWrapperHeight(); // <= setSlidePositions
2344                    needContainerTransform = true;
2345                }
2346            }
2347            if (fixedWidth || autoWidth) {
2348                rightBoundary = getRightBoundary(); // autoWidth: <= viewport, slidePositions, gutter
2349                                                    // fixedWidth: <= viewport, fixedWidth, gutter
2350                indexMax = getIndexMax(); // autoWidth: <= rightBoundary, slidePositions
2351                                          // fixedWidth: <= rightBoundary, fixedWidth, gutter
2352            }
2353
2354            if (bpChanged || fixedWidth) {
2355                items = getOption('items');
2356                slideBy = getOption('slideBy');
2357                itemsChanged = items !== itemsTem;
2358
2359                if (itemsChanged) {
2360                    if (!fixedWidth && !autoWidth) { indexMax = getIndexMax(); } // <= items
2361                    // check index before transform in case
2362                    // slider reach the right edge then items become bigger
2363                    updateIndex();
2364                }
2365            }
2366
2367            if (bpChanged) {
2368                if (disable !== disableTem) {
2369                    if (disable) {
2370                        disableSlider();
2371                    } else {
2372                        enableSlider(); // <= slidePositions, rightBoundary, indexMax
2373                    }
2374                }
2375            }
2376
2377            if (freezable && (bpChanged || fixedWidth || autoWidth)) {
2378                freeze = getFreeze(); // <= autoWidth: slidePositions, gutter, viewport, rightBoundary
2379                                      // <= fixedWidth: fixedWidth, gutter, rightBoundary
2380                                      // <= others: items
2381
2382                if (freeze !== freezeTem) {
2383                    if (freeze) {
2384                        doContainerTransform(getContainerTransformValue(getStartIndex(0)));
2385                        freezeSlider();
2386                    } else {
2387                        unfreezeSlider();
2388                        needContainerTransform = true;
2389                    }
2390                }
2391            }
2392
2393            resetVariblesWhenDisable(disable || freeze); // controls, nav, touch, mouseDrag, arrowKeys, autoplay, autoplayHoverPause, autoplayResetOnVisibility
2394            if (!autoplay) { autoplayHoverPause = autoplayResetOnVisibility = false; }
2395
2396            if (arrowKeys !== arrowKeysTem) {
2397                arrowKeys ?
2398                    addEvents(doc, docmentKeydownEvent) :
2399                    removeEvents(doc, docmentKeydownEvent);
2400            }
2401            if (controls !== controlsTem) {
2402                if (controls) {
2403                    if (controlsContainer) {
2404                        showElement(controlsContainer);
2405                    } else {
2406                        if (prevButton) { showElement(prevButton); }
2407                        if (nextButton) { showElement(nextButton); }
2408                    }
2409                } else {
2410                    if (controlsContainer) {
2411                        hideElement(controlsContainer);
2412                    } else {
2413                        if (prevButton) { hideElement(prevButton); }
2414                        if (nextButton) { hideElement(nextButton); }
2415                    }
2416                }
2417            }
2418            if (nav !== navTem) {
2419                if (nav) {
2420                    showElement(navContainer);
2421                    updateNavVisibility();
2422                } else {
2423                    hideElement(navContainer);
2424                }
2425            }
2426            if (touch !== touchTem) {
2427                touch ?
2428                    addEvents(container, touchEvents, options.preventScrollOnTouch) :
2429                    removeEvents(container, touchEvents);
2430            }
2431            if (mouseDrag !== mouseDragTem) {
2432                mouseDrag ?
2433                    addEvents(container, dragEvents) :
2434                    removeEvents(container, dragEvents);
2435            }
2436            if (autoplay !== autoplayTem) {
2437                if (autoplay) {
2438                    if (autoplayButton) { showElement(autoplayButton); }
2439                    if (!animating && !autoplayUserPaused) { startAutoplay(); }
2440                } else {
2441                    if (autoplayButton) { hideElement(autoplayButton); }
2442                    if (animating) { stopAutoplay(); }
2443                }
2444            }
2445            if (autoplayHoverPause !== autoplayHoverPauseTem) {
2446                autoplayHoverPause ?
2447                    addEvents(container, hoverEvents) :
2448                    removeEvents(container, hoverEvents);
2449            }
2450            if (autoplayResetOnVisibility !== autoplayResetOnVisibilityTem) {
2451                autoplayResetOnVisibility ?
2452                    addEvents(doc, visibilityEvent) :
2453                    removeEvents(doc, visibilityEvent);
2454            }
2455
2456            if (bpChanged) {
2457                if (fixedWidth !== fixedWidthTem || center !== centerTem) { needContainerTransform = true; }
2458
2459                if (autoHeight !== autoHeightTem) {
2460                    if (!autoHeight) { innerWrapper.style.height = ''; }
2461                }
2462
2463                if (controls && controlsText !== controlsTextTem) {
2464                    prevButton.innerHTML = controlsText[0];
2465                    nextButton.innerHTML = controlsText[1];
2466                }
2467
2468                if (autoplayButton && autoplayText !== autoplayTextTem) {
2469                    var i = autoplay ? 1 : 0,
2470                        html = autoplayButton.innerHTML,
2471                        len = html.length - autoplayTextTem[i].length;
2472                    if (html.substring(len) === autoplayTextTem[i]) {
2473                        autoplayButton.innerHTML = html.substring(0, len) + autoplayText[i];
2474                    }
2475                }
2476            } else {
2477                if (center && (fixedWidth || autoWidth)) { needContainerTransform = true; }
2478            }
2479
2480            if (itemsChanged || fixedWidth && !autoWidth) {
2481                pages = getPages();
2482                updateNavVisibility();
2483            }
2484
2485            indChanged = index !== indexTem;
2486            if (indChanged) {
2487                events.emit('indexChanged', info());
2488                needContainerTransform = true;
2489            } else if (itemsChanged) {
2490                if (!indChanged) { additionalUpdates(); }
2491            } else if (fixedWidth || autoWidth) {
2492                doLazyLoad();
2493                updateSlideStatus();
2494                updateLiveRegion();
2495            }
2496
2497            if (itemsChanged && !carousel) { updateGallerySlidePositions(); }
2498
2499            if (!disable && !freeze) {
2500                // non-mediaqueries: IE8
2501                if (bpChanged && !CSSMQ) {
2502                    // middle wrapper styles
2503
2504                    // inner wrapper styles
2505                    if (edgePadding !== edgePaddingTem || gutter !== gutterTem) {
2506                        innerWrapper.style.cssText = getInnerWrapperStyles(edgePadding, gutter, fixedWidth, speed, autoHeight);
2507                    }
2508
2509                    if (horizontal) {
2510                        // container styles
2511                        if (carousel) {
2512                            container.style.width = getContainerWidth(fixedWidth, gutter, items);
2513                        }
2514
2515                        // slide styles
2516                        var str = getSlideWidthStyle(fixedWidth, gutter, items) +
2517                            getSlideGutterStyle(gutter);
2518
2519                        // remove the last line and
2520                        // add new styles
2521                        removeCSSRule(sheet, getCssRulesLength(sheet) - 1);
2522                        addCSSRule(sheet, '#' + slideId + ' > .tns-item', str, getCssRulesLength(sheet));
2523                    }
2524                }
2525
2526                // auto height
2527                if (autoHeight) { doAutoHeight(); }
2528
2529                if (needContainerTransform) {
2530                    doContainerTransformSilent();
2531                    indexCached = index;
2532                }
2533            }
2534
2535            if (bpChanged) { events.emit('newBreakpointEnd', info(e)); }
2536        }
2537
2538
2539
2540
2541
2542        // === INITIALIZATION FUNCTIONS === //
2543        function getFreeze () {
2544            if (!fixedWidth && !autoWidth) {
2545                var a = center ? items - (items - 1) / 2 : items;
2546                return  slideCount <= a;
2547            }
2548
2549            var width = fixedWidth ? (fixedWidth + gutter) * slideCount : slidePositions[slideCount],
2550                vp = edgePadding ? viewport + edgePadding * 2 : viewport + gutter;
2551
2552            if (center) {
2553                vp -= fixedWidth ? (viewport - fixedWidth) / 2 : (viewport - (slidePositions[index + 1] - slidePositions[index] - gutter)) / 2;
2554            }
2555
2556            return width <= vp;
2557        }
2558
2559        function setBreakpointZone () {
2560            breakpointZone = 0;
2561            for (var bp in responsive) {
2562                bp = parseInt(bp); // convert string to number
2563                if (windowWidth >= bp) { breakpointZone = bp; }
2564            }
2565        }
2566
2567        // (slideBy, indexMin, indexMax) => index
2568        var updateIndex = (function () {
2569            return loop ?
2570                carousel ?
2571                    // loop + carousel
2572                    function () {
2573                        var leftEdge = indexMin,
2574                            rightEdge = indexMax;
2575
2576                        leftEdge += slideBy;
2577                        rightEdge -= slideBy;
2578
2579                        // adjust edges when has edge paddings
2580                        // or fixed-width slider with extra space on the right side
2581                        if (edgePadding) {
2582                            leftEdge += 1;
2583                            rightEdge -= 1;
2584                        } else if (fixedWidth) {
2585                            if ((viewport + gutter)%(fixedWidth + gutter)) { rightEdge -= 1; }
2586                        }
2587
2588                        if (cloneCount) {
2589                            if (index > rightEdge) {
2590                                index -= slideCount;
2591                            } else if (index < leftEdge) {
2592                                index += slideCount;
2593                            }
2594                        }
2595                    } :
2596                    // loop + gallery
2597                    function() {
2598                        if (index > indexMax) {
2599                            while (index >= indexMin + slideCount) { index -= slideCount; }
2600                        } else if (index < indexMin) {
2601                            while (index <= indexMax - slideCount) { index += slideCount; }
2602                        }
2603                    } :
2604                // non-loop
2605                function() {
2606                    index = Math.max(indexMin, Math.min(indexMax, index));
2607                };
2608        })();
2609
2610        function disableUI () {
2611            if (!autoplay && autoplayButton) { hideElement(autoplayButton); }
2612            if (!nav && navContainer) { hideElement(navContainer); }
2613            if (!controls) {
2614                if (controlsContainer) {
2615                    hideElement(controlsContainer);
2616                } else {
2617                    if (prevButton) { hideElement(prevButton); }
2618                    if (nextButton) { hideElement(nextButton); }
2619                }
2620            }
2621        }
2622
2623        function enableUI () {
2624            if (autoplay && autoplayButton) { showElement(autoplayButton); }
2625            if (nav && navContainer) { showElement(navContainer); }
2626            if (controls) {
2627                if (controlsContainer) {
2628                    showElement(controlsContainer);
2629                } else {
2630                    if (prevButton) { showElement(prevButton); }
2631                    if (nextButton) { showElement(nextButton); }
2632                }
2633            }
2634        }
2635
2636        function freezeSlider () {
2637            if (frozen) { return; }
2638
2639            // remove edge padding from inner wrapper
2640            if (edgePadding) { innerWrapper.style.margin = '0px'; }
2641
2642            // add class tns-transparent to cloned slides
2643            if (cloneCount) {
2644                var str = 'tns-transparent';
2645                for (var i = cloneCount; i--;) {
2646                    if (carousel) { addClass(slideItems[i], str); }
2647                    addClass(slideItems[slideCountNew - i - 1], str);
2648                }
2649            }
2650
2651            // update tools
2652            disableUI();
2653
2654            frozen = true;
2655        }
2656
2657        function unfreezeSlider () {
2658            if (!frozen) { return; }
2659
2660            // restore edge padding for inner wrapper
2661            // for mordern browsers
2662            if (edgePadding && CSSMQ) { innerWrapper.style.margin = ''; }
2663
2664            // remove class tns-transparent to cloned slides
2665            if (cloneCount) {
2666                var str = 'tns-transparent';
2667                for (var i = cloneCount; i--;) {
2668                    if (carousel) { removeClass(slideItems[i], str); }
2669                    removeClass(slideItems[slideCountNew - i - 1], str);
2670                }
2671            }
2672
2673            // update tools
2674            enableUI();
2675
2676            frozen = false;
2677        }
2678
2679        function disableSlider () {
2680            if (disabled) { return; }
2681
2682            sheet.disabled = true;
2683            container.className = container.className.replace(newContainerClasses.substring(1), '');
2684            removeAttrs(container, ['style']);
2685            if (loop) {
2686                for (var j = cloneCount; j--;) {
2687                    if (carousel) { hideElement(slideItems[j]); }
2688                    hideElement(slideItems[slideCountNew - j - 1]);
2689                }
2690            }
2691
2692            // vertical slider
2693            if (!horizontal || !carousel) { removeAttrs(innerWrapper, ['style']); }
2694
2695            // gallery
2696            if (!carousel) {
2697                for (var i = index, l = index + slideCount; i < l; i++) {
2698                    var item = slideItems[i];
2699                    removeAttrs(item, ['style']);
2700                    removeClass(item, animateIn);
2701                    removeClass(item, animateNormal);
2702                }
2703            }
2704
2705            // update tools
2706            disableUI();
2707
2708            disabled = true;
2709        }
2710
2711        function enableSlider () {
2712            if (!disabled) { return; }
2713
2714            sheet.disabled = false;
2715            container.className += newContainerClasses;
2716            doContainerTransformSilent();
2717
2718            if (loop) {
2719                for (var j = cloneCount; j--;) {
2720                    if (carousel) { showElement(slideItems[j]); }
2721                    showElement(slideItems[slideCountNew - j - 1]);
2722                }
2723            }
2724
2725            // gallery
2726            if (!carousel) {
2727                for (var i = index, l = index + slideCount; i < l; i++) {
2728                    var item = slideItems[i],
2729                        classN = i < index + items ? animateIn : animateNormal;
2730                    item.style.left = (i - index) * 100 / items + '%';
2731                    addClass(item, classN);
2732                }
2733            }
2734
2735            // update tools
2736            enableUI();
2737
2738            disabled = false;
2739        }
2740
2741        function updateLiveRegion () {
2742            var str = getLiveRegionStr();
2743            if (liveregionCurrent.innerHTML !== str) { liveregionCurrent.innerHTML = str; }
2744        }
2745
2746        function getLiveRegionStr () {
2747            var arr = getVisibleSlideRange(),
2748                start = arr[0] + 1,
2749                end = arr[1] + 1;
2750            return start === end ? start + '' : start + ' to ' + end;
2751        }
2752
2753        function getVisibleSlideRange (val) {
2754            if (val == null) { val = getContainerTransformValue(); }
2755            var start = index, end, rangestart, rangeend;
2756
2757            // get range start, range end for autoWidth and fixedWidth
2758            if (center || edgePadding) {
2759                if (autoWidth || fixedWidth) {
2760                    rangestart = - (parseFloat(val) + edgePadding);
2761                    rangeend = rangestart + viewport + edgePadding * 2;
2762                }
2763            } else {
2764                if (autoWidth) {
2765                    rangestart = slidePositions[index];
2766                    rangeend = rangestart + viewport;
2767                }
2768            }
2769
2770            // get start, end
2771            // - check auto width
2772            if (autoWidth) {
2773                slidePositions.forEach(function(point, i) {
2774                    if (i < slideCountNew) {
2775                        if ((center || edgePadding) && point <= rangestart + 0.5) { start = i; }
2776                        if (rangeend - point >= 0.5) { end = i; }
2777                    }
2778                });
2779
2780                // - check percentage width, fixed width
2781            } else {
2782
2783                if (fixedWidth) {
2784                    var cell = fixedWidth + gutter;
2785                    if (center || edgePadding) {
2786                        start = Math.floor(rangestart/cell);
2787                        end = Math.ceil(rangeend/cell - 1);
2788                    } else {
2789                        end = start + Math.ceil(viewport/cell) - 1;
2790                    }
2791
2792                } else {
2793                    if (center || edgePadding) {
2794                        var a = items - 1;
2795                        if (center) {
2796                            start -= a / 2;
2797                            end = index + a / 2;
2798                        } else {
2799                            end = index + a;
2800                        }
2801
2802                        if (edgePadding) {
2803                            var b = edgePadding * items / viewport;
2804                            start -= b;
2805                            end += b;
2806                        }
2807
2808                        start = Math.floor(start);
2809                        end = Math.ceil(end);
2810                    } else {
2811                        end = start + items - 1;
2812                    }
2813                }
2814
2815                start = Math.max(start, 0);
2816                end = Math.min(end, slideCountNew - 1);
2817            }
2818
2819            return [start, end];
2820        }
2821
2822        function doLazyLoad () {
2823            if (lazyload && !disable) {
2824                var arg = getVisibleSlideRange();
2825                arg.push(lazyloadSelector);
2826
2827                getImageArray.apply(null, arg).forEach(function (img) {
2828                    if (!hasClass(img, imgCompleteClass)) {
2829                        // stop propagation transitionend event to container
2830                        var eve = {};
2831                        eve[TRANSITIONEND] = function (e) { e.stopPropagation(); };
2832                        addEvents(img, eve);
2833
2834                        addEvents(img, imgEvents);
2835
2836                        // update src
2837                        img.src = getAttr(img, 'data-src');
2838
2839                        // update srcset
2840                        var srcset = getAttr(img, 'data-srcset');
2841                        if (srcset) { img.srcset = srcset; }
2842
2843                        addClass(img, 'loading');
2844                    }
2845                });
2846            }
2847        }
2848
2849        function onImgLoaded (e) {
2850            imgLoaded(getTarget(e));
2851        }
2852
2853        function onImgFailed (e) {
2854            imgFailed(getTarget(e));
2855        }
2856
2857        function imgLoaded (img) {
2858            addClass(img, 'loaded');
2859            imgCompleted(img);
2860        }
2861
2862        function imgFailed (img) {
2863            addClass(img, 'failed');
2864            imgCompleted(img);
2865        }
2866
2867        function imgCompleted (img) {
2868            addClass(img, imgCompleteClass);
2869            removeClass(img, 'loading');
2870            removeEvents(img, imgEvents);
2871        }
2872
2873        function getImageArray (start, end, imgSelector) {
2874            var imgs = [];
2875            if (!imgSelector) { imgSelector = 'img'; }
2876
2877            while (start <= end) {
2878                forEach(slideItems[start].querySelectorAll(imgSelector), function (img) { imgs.push(img); });
2879                start++;
2880            }
2881
2882            return imgs;
2883        }
2884
2885        // check if all visible images are loaded
2886        // and update container height if it's done
2887        function doAutoHeight () {
2888            var imgs = getImageArray.apply(null, getVisibleSlideRange());
2889            raf(function(){ imgsLoadedCheck(imgs, updateInnerWrapperHeight); });
2890        }
2891
2892        function imgsLoadedCheck (imgs, cb) {
2893            // execute callback function if all images are complete
2894            if (imgsComplete) { return cb(); }
2895
2896            // check image classes
2897            imgs.forEach(function (img, index) {
2898                if (!lazyload && img.complete) { imgCompleted(img); } // Check image.complete
2899                if (hasClass(img, imgCompleteClass)) { imgs.splice(index, 1); }
2900            });
2901
2902            // execute callback function if selected images are all complete
2903            if (!imgs.length) { return cb(); }
2904
2905            // otherwise execute this functiona again
2906            raf(function(){ imgsLoadedCheck(imgs, cb); });
2907        }
2908
2909        function additionalUpdates () {
2910            doLazyLoad();
2911            updateSlideStatus();
2912            updateLiveRegion();
2913            updateControlsStatus();
2914            updateNavStatus();
2915        }
2916
2917
2918        function update_carousel_transition_duration () {
2919            if (carousel && autoHeight) {
2920                middleWrapper.style[TRANSITIONDURATION] = speed / 1000 + 's';
2921            }
2922        }
2923
2924        function getMaxSlideHeight (slideStart, slideRange) {
2925            var heights = [];
2926            for (var i = slideStart, l = Math.min(slideStart + slideRange, slideCountNew); i < l; i++) {
2927                heights.push(slideItems[i].offsetHeight);
2928            }
2929
2930            return Math.max.apply(null, heights);
2931        }
2932
2933        // update inner wrapper height
2934        // 1. get the max-height of the visible slides
2935        // 2. set transitionDuration to speed
2936        // 3. update inner wrapper height to max-height
2937        // 4. set transitionDuration to 0s after transition done
2938        function updateInnerWrapperHeight () {
2939            var maxHeight = autoHeight ? getMaxSlideHeight(index, items) : getMaxSlideHeight(cloneCount, slideCount),
2940                wp = middleWrapper ? middleWrapper : innerWrapper;
2941
2942            if (wp.style.height !== maxHeight) { wp.style.height = maxHeight + 'px'; }
2943        }
2944
2945        // get the distance from the top edge of the first slide to each slide
2946        // (init) => slidePositions
2947        function setSlidePositions () {
2948            slidePositions = [0];
2949            var attr = horizontal ? 'left' : 'top',
2950                attr2 = horizontal ? 'right' : 'bottom',
2951                base = slideItems[0].getBoundingClientRect()[attr];
2952
2953            forEach(slideItems, function(item, i) {
2954                // skip the first slide
2955                if (i) { slidePositions.push(item.getBoundingClientRect()[attr] - base); }
2956                // add the end edge
2957                if (i === slideCountNew - 1) { slidePositions.push(item.getBoundingClientRect()[attr2] - base); }
2958            });
2959        }
2960
2961        // update slide
2962        function updateSlideStatus () {
2963            var range = getVisibleSlideRange(),
2964                start = range[0],
2965                end = range[1];
2966
2967            forEach(slideItems, function(item, i) {
2968                // show slides
2969                if (i >= start && i <= end) {
2970                    if (hasAttr(item, 'aria-hidden')) {
2971                        removeAttrs(item, ['aria-hidden', 'tabindex']);
2972                        addClass(item, slideActiveClass);
2973                    }
2974                    // hide slides
2975                } else {
2976                    if (!hasAttr(item, 'aria-hidden')) {
2977                        setAttrs(item, {
2978                            'aria-hidden': 'true',
2979                            'tabindex': '-1'
2980                        });
2981                        removeClass(item, slideActiveClass);
2982                    }
2983                }
2984            });
2985        }
2986
2987        // gallery: update slide position
2988        function updateGallerySlidePositions () {
2989            var l = index + Math.min(slideCount, items);
2990            for (var i = slideCountNew; i--;) {
2991                var item = slideItems[i];
2992
2993                if (i >= index && i < l) {
2994                    // add transitions to visible slides when adjusting their positions
2995                    addClass(item, 'tns-moving');
2996
2997                    item.style.left = (i - index) * 100 / items + '%';
2998                    addClass(item, animateIn);
2999                    removeClass(item, animateNormal);
3000                } else if (item.style.left) {
3001                    item.style.left = '';
3002                    addClass(item, animateNormal);
3003                    removeClass(item, animateIn);
3004                }
3005
3006                // remove outlet animation
3007                removeClass(item, animateOut);
3008            }
3009
3010            // removing '.tns-moving'
3011            setTimeout(function() {
3012                forEach(slideItems, function(el) {
3013                    removeClass(el, 'tns-moving');
3014                });
3015            }, 300);
3016        }
3017
3018        // set tabindex on Nav
3019        function updateNavStatus () {
3020            // get current nav
3021            if (nav) {
3022                navCurrentIndex = navClicked >= 0 ? navClicked : getCurrentNavIndex();
3023                navClicked = -1;
3024
3025                if (navCurrentIndex !== navCurrentIndexCached) {
3026                    var navPrev = navItems[navCurrentIndexCached],
3027                        navCurrent = navItems[navCurrentIndex];
3028
3029                    setAttrs(navPrev, {
3030                        'tabindex': '-1',
3031                        'aria-label': navStr + (navCurrentIndexCached + 1)
3032                    });
3033                    removeClass(navPrev, navActiveClass);
3034
3035                    setAttrs(navCurrent, {'aria-label': navStr + (navCurrentIndex + 1) + navStrCurrent});
3036                    removeAttrs(navCurrent, 'tabindex');
3037                    addClass(navCurrent, navActiveClass);
3038
3039                    navCurrentIndexCached = navCurrentIndex;
3040                }
3041            }
3042        }
3043
3044        function getLowerCaseNodeName (el) {
3045            return el.nodeName.toLowerCase();
3046        }
3047
3048        function isButton (el) {
3049            return getLowerCaseNodeName(el) === 'button';
3050        }
3051
3052        function isAriaDisabled (el) {
3053            return el.getAttribute('aria-disabled') === 'true';
3054        }
3055
3056        function disEnableElement (isButton, el, val) {
3057            if (isButton) {
3058                el.disabled = val;
3059            } else {
3060                el.setAttribute('aria-disabled', val.toString());
3061            }
3062        }
3063
3064        // set 'disabled' to true on controls when reach the edges
3065        function updateControlsStatus () {
3066            if (!controls || rewind || loop) { return; }
3067
3068            var prevDisabled = (prevIsButton) ? prevButton.disabled : isAriaDisabled(prevButton),
3069                nextDisabled = (nextIsButton) ? nextButton.disabled : isAriaDisabled(nextButton),
3070                disablePrev = (index <= indexMin) ? true : false,
3071                disableNext = (!rewind && index >= indexMax) ? true : false;
3072
3073            if (disablePrev && !prevDisabled) {
3074                disEnableElement(prevIsButton, prevButton, true);
3075            }
3076            if (!disablePrev && prevDisabled) {
3077                disEnableElement(prevIsButton, prevButton, false);
3078            }
3079            if (disableNext && !nextDisabled) {
3080                disEnableElement(nextIsButton, nextButton, true);
3081            }
3082            if (!disableNext && nextDisabled) {
3083                disEnableElement(nextIsButton, nextButton, false);
3084            }
3085        }
3086
3087        // set duration
3088        function resetDuration (el, str) {
3089            if (TRANSITIONDURATION) { el.style[TRANSITIONDURATION] = str; }
3090        }
3091
3092        function getSliderWidth () {
3093            return fixedWidth ? (fixedWidth + gutter) * slideCountNew : slidePositions[slideCountNew];
3094        }
3095
3096        function getCenterGap (num) {
3097            if (num == null) { num = index; }
3098
3099            var gap = edgePadding ? gutter : 0;
3100            return autoWidth ? ((viewport - gap) - (slidePositions[num + 1] - slidePositions[num] - gutter))/2 :
3101                fixedWidth ? (viewport - fixedWidth) / 2 :
3102                    (items - 1) / 2;
3103        }
3104
3105        function getRightBoundary () {
3106            var gap = edgePadding ? gutter : 0,
3107                result = (viewport + gap) - getSliderWidth();
3108
3109            if (center && !loop) {
3110                result = fixedWidth ? - (fixedWidth + gutter) * (slideCountNew - 1) - getCenterGap() :
3111                    getCenterGap(slideCountNew - 1) - slidePositions[slideCountNew - 1];
3112            }
3113            if (result > 0) { result = 0; }
3114
3115            return result;
3116        }
3117
3118        function getContainerTransformValue (num) {
3119            if (num == null) { num = index; }
3120
3121            var val;
3122            if (horizontal && !autoWidth) {
3123                if (fixedWidth) {
3124                    val = - (fixedWidth + gutter) * num;
3125                    if (center) { val += getCenterGap(); }
3126                } else {
3127                    var denominator = TRANSFORM ? slideCountNew : items;
3128                    if (center) { num -= getCenterGap(); }
3129                    val = - num * 100 / denominator;
3130                }
3131            } else {
3132                val = - slidePositions[num];
3133                if (center && autoWidth) {
3134                    val += getCenterGap();
3135                }
3136            }
3137
3138            if (hasRightDeadZone) { val = Math.max(val, rightBoundary); }
3139
3140            val += (horizontal && !autoWidth && !fixedWidth) ? '%' : 'px';
3141
3142            return val;
3143        }
3144
3145        function doContainerTransformSilent (val) {
3146            resetDuration(container, '0s');
3147            doContainerTransform(val);
3148        }
3149
3150        function doContainerTransform (val) {
3151            if (val == null) { val = getContainerTransformValue(); }
3152            container.style[transformAttr] = transformPrefix + val + transformPostfix;
3153        }
3154
3155        function animateSlide (number, classOut, classIn, isOut) {
3156            var l = number + items;
3157            if (!loop) { l = Math.min(l, slideCountNew); }
3158
3159            for (var i = number; i < l; i++) {
3160                var item = slideItems[i];
3161
3162                // set item positions
3163                if (!isOut) { item.style.left = (i - index) * 100 / items + '%'; }
3164
3165                if (animateDelay && TRANSITIONDELAY) {
3166                    item.style[TRANSITIONDELAY] = item.style[ANIMATIONDELAY] = animateDelay * (i - number) / 1000 + 's';
3167                }
3168                removeClass(item, classOut);
3169                addClass(item, classIn);
3170
3171                if (isOut) { slideItemsOut.push(item); }
3172            }
3173        }
3174
3175        // make transfer after click/drag:
3176        // 1. change 'transform' property for mordern browsers
3177        // 2. change 'left' property for legacy browsers
3178        var transformCore = (function () {
3179            return carousel ?
3180                function () {
3181                    resetDuration(container, '');
3182                    if (TRANSITIONDURATION || !speed) {
3183                        // for morden browsers with non-zero duration or
3184                        // zero duration for all browsers
3185                        doContainerTransform();
3186                        // run fallback function manually
3187                        // when duration is 0 / container is hidden
3188                        if (!speed || !isVisible(container)) { onTransitionEnd(); }
3189
3190                    } else {
3191                        // for old browser with non-zero duration
3192                        jsTransform(container, transformAttr, transformPrefix, transformPostfix, getContainerTransformValue(), speed, onTransitionEnd);
3193                    }
3194
3195                    if (!horizontal) { updateContentWrapperHeight(); }
3196                } :
3197                function () {
3198                    slideItemsOut = [];
3199
3200                    var eve = {};
3201                    eve[TRANSITIONEND] = eve[ANIMATIONEND] = onTransitionEnd;
3202                    removeEvents(slideItems[indexCached], eve);
3203                    addEvents(slideItems[index], eve);
3204
3205                    animateSlide(indexCached, animateIn, animateOut, true);
3206                    animateSlide(index, animateNormal, animateIn);
3207
3208                    // run fallback function manually
3209                    // when transition or animation not supported / duration is 0
3210                    if (!TRANSITIONEND || !ANIMATIONEND || !speed || !isVisible(container)) { onTransitionEnd(); }
3211                };
3212        })();
3213
3214        function render (e, sliderMoved) {
3215            if (updateIndexBeforeTransform) { updateIndex(); }
3216
3217            // render when slider was moved (touch or drag) even though index may not change
3218            if (index !== indexCached || sliderMoved) {
3219                // events
3220                events.emit('indexChanged', info());
3221                events.emit('transitionStart', info());
3222                if (autoHeight) { doAutoHeight(); }
3223
3224                // pause autoplay when click or keydown from user
3225                if (animating && e && ['click', 'keydown'].indexOf(e.type) >= 0) { stopAutoplay(); }
3226
3227                running = true;
3228                transformCore();
3229            }
3230        }
3231
3232        /*
3233         * Transfer prefixed properties to the same format
3234         * CSS: -Webkit-Transform => webkittransform
3235         * JS: WebkitTransform => webkittransform
3236         * @param {string} str - property
3237         *
3238         */
3239        function strTrans (str) {
3240            return str.toLowerCase().replace(/-/g, '');
3241        }
3242
3243        // AFTER TRANSFORM
3244        // Things need to be done after a transfer:
3245        // 1. check index
3246        // 2. add classes to visible slide
3247        // 3. disable controls buttons when reach the first/last slide in non-loop slider
3248        // 4. update nav status
3249        // 5. lazyload images
3250        // 6. update container height
3251        function onTransitionEnd (event) {
3252            // check running on gallery mode
3253            // make sure trantionend/animationend events run only once
3254            if (carousel || running) {
3255                events.emit('transitionEnd', info(event));
3256
3257                if (!carousel && slideItemsOut.length > 0) {
3258                    for (var i = 0; i < slideItemsOut.length; i++) {
3259                        var item = slideItemsOut[i];
3260                        // set item positions
3261                        item.style.left = '';
3262
3263                        if (ANIMATIONDELAY && TRANSITIONDELAY) {
3264                            item.style[ANIMATIONDELAY] = '';
3265                            item.style[TRANSITIONDELAY] = '';
3266                        }
3267                        removeClass(item, animateOut);
3268                        addClass(item, animateNormal);
3269                    }
3270                }
3271
3272                /* update slides, nav, controls after checking ...
3273                 * => legacy browsers who don't support 'event'
3274                 *    have to check event first, otherwise event.target will cause an error
3275                 * => or 'gallery' mode:
3276                 *   + event target is slide item
3277                 * => or 'carousel' mode:
3278                 *   + event target is container,
3279                 *   + event.property is the same with transform attribute
3280                 */
3281                if (!event ||
3282                    !carousel && event.target.parentNode === container ||
3283                    event.target === container && strTrans(event.propertyName) === strTrans(transformAttr)) {
3284
3285                    if (!updateIndexBeforeTransform) {
3286                        var indexTem = index;
3287                        updateIndex();
3288                        if (index !== indexTem) {
3289                            events.emit('indexChanged', info());
3290
3291                            doContainerTransformSilent();
3292                        }
3293                    }
3294
3295                    if (nested === 'inner') { events.emit('innerLoaded', info()); }
3296                    running = false;
3297                    indexCached = index;
3298                }
3299            }
3300
3301        }
3302
3303        // # ACTIONS
3304        function goTo (targetIndex, e) {
3305            if (freeze) { return; }
3306
3307            // prev slideBy
3308            if (targetIndex === 'prev') {
3309                onControlsClick(e, -1);
3310
3311                // next slideBy
3312            } else if (targetIndex === 'next') {
3313                onControlsClick(e, 1);
3314
3315                // go to exact slide
3316            } else {
3317                if (running) {
3318                    if (preventActionWhenRunning) { return; } else { onTransitionEnd(); }
3319                }
3320
3321                var absIndex = getAbsIndex(),
3322                    indexGap = 0;
3323
3324                if (targetIndex === 'first') {
3325                    indexGap = - absIndex;
3326                } else if (targetIndex === 'last') {
3327                    indexGap = carousel ? slideCount - items - absIndex : slideCount - 1 - absIndex;
3328                } else {
3329                    if (typeof targetIndex !== 'number') { targetIndex = parseInt(targetIndex); }
3330
3331                    if (!isNaN(targetIndex)) {
3332                        // from directly called goTo function
3333                        if (!e) { targetIndex = Math.max(0, Math.min(slideCount - 1, targetIndex)); }
3334
3335                        indexGap = targetIndex - absIndex;
3336                    }
3337                }
3338
3339                // gallery: make sure new page won't overlap with current page
3340                if (!carousel && indexGap && Math.abs(indexGap) < items) {
3341                    var factor = indexGap > 0 ? 1 : -1;
3342                    indexGap += (index + indexGap - slideCount) >= indexMin ? slideCount * factor : slideCount * 2 * factor * -1;
3343                }
3344
3345                index += indexGap;
3346
3347                // make sure index is in range
3348                if (carousel && loop) {
3349                    if (index < indexMin) { index += slideCount; }
3350                    if (index > indexMax) { index -= slideCount; }
3351                }
3352
3353                // if index is changed, start rendering
3354                if (getAbsIndex(index) !== getAbsIndex(indexCached)) {
3355                    render(e);
3356                }
3357
3358            }
3359        }
3360
3361        // on controls click
3362        function onControlsClick (e, dir) {
3363            if (running) {
3364                if (preventActionWhenRunning) { return; } else { onTransitionEnd(); }
3365            }
3366            var passEventObject;
3367
3368            if (!dir) {
3369                e = getEvent(e);
3370                var target = getTarget(e);
3371
3372                while (target !== controlsContainer && [prevButton, nextButton].indexOf(target) < 0) { target = target.parentNode; }
3373
3374                var targetIn = [prevButton, nextButton].indexOf(target);
3375                if (targetIn >= 0) {
3376                    passEventObject = true;
3377                    dir = targetIn === 0 ? -1 : 1;
3378                }
3379            }
3380
3381            if (rewind) {
3382                if (index === indexMin && dir === -1) {
3383                    goTo('last', e);
3384                    return;
3385                } else if (index === indexMax && dir === 1) {
3386                    goTo('first', e);
3387                    return;
3388                }
3389            }
3390
3391            if (dir) {
3392                index += slideBy * dir;
3393                if (autoWidth) { index = Math.floor(index); }
3394                // pass e when click control buttons or keydown
3395                render((passEventObject || (e && e.type === 'keydown')) ? e : null);
3396            }
3397        }
3398
3399        // on nav click
3400        function onNavClick (e) {
3401            if (running) {
3402                if (preventActionWhenRunning) { return; } else { onTransitionEnd(); }
3403            }
3404
3405            e = getEvent(e);
3406            var target = getTarget(e), navIndex;
3407
3408            // find the clicked nav item
3409            while (target !== navContainer && !hasAttr(target, 'data-nav')) { target = target.parentNode; }
3410            if (hasAttr(target, 'data-nav')) {
3411                var navIndex = navClicked = Number(getAttr(target, 'data-nav')),
3412                    targetIndexBase = fixedWidth || autoWidth ? navIndex * slideCount / pages : navIndex * items,
3413                    targetIndex = navAsThumbnails ? navIndex : Math.min(Math.ceil(targetIndexBase), slideCount - 1);
3414                goTo(targetIndex, e);
3415
3416                if (navCurrentIndex === navIndex) {
3417                    if (animating) { stopAutoplay(); }
3418                    navClicked = -1; // reset navClicked
3419                }
3420            }
3421        }
3422
3423        // autoplay functions
3424        function setAutoplayTimer () {
3425            autoplayTimer = setInterval(function () {
3426                onControlsClick(null, autoplayDirection);
3427            }, autoplayTimeout);
3428
3429            animating = true;
3430        }
3431
3432        function stopAutoplayTimer () {
3433            clearInterval(autoplayTimer);
3434            animating = false;
3435        }
3436
3437        function updateAutoplayButton (action, txt) {
3438            setAttrs(autoplayButton, {'data-action': action});
3439            autoplayButton.innerHTML = autoplayHtmlStrings[0] + action + autoplayHtmlStrings[1] + txt;
3440        }
3441
3442        function startAutoplay () {
3443            setAutoplayTimer();
3444            if (autoplayButton) { updateAutoplayButton('stop', autoplayText[1]); }
3445        }
3446
3447        function stopAutoplay () {
3448            stopAutoplayTimer();
3449            if (autoplayButton) { updateAutoplayButton('start', autoplayText[0]); }
3450        }
3451
3452        // programaitcally play/pause the slider
3453        function play () {
3454            if (autoplay && !animating) {
3455                startAutoplay();
3456                autoplayUserPaused = false;
3457            }
3458        }
3459        function pause () {
3460            if (animating) {
3461                stopAutoplay();
3462                autoplayUserPaused = true;
3463            }
3464        }
3465
3466        function toggleAutoplay () {
3467            if (animating) {
3468                stopAutoplay();
3469                autoplayUserPaused = true;
3470            } else {
3471                startAutoplay();
3472                autoplayUserPaused = false;
3473            }
3474        }
3475
3476        function onVisibilityChange () {
3477            if (doc.hidden) {
3478                if (animating) {
3479                    stopAutoplayTimer();
3480                    autoplayVisibilityPaused = true;
3481                }
3482            } else if (autoplayVisibilityPaused) {
3483                setAutoplayTimer();
3484                autoplayVisibilityPaused = false;
3485            }
3486        }
3487
3488        function mouseoverPause () {
3489            if (animating) {
3490                stopAutoplayTimer();
3491                autoplayHoverPaused = true;
3492            }
3493        }
3494
3495        function mouseoutRestart () {
3496            if (autoplayHoverPaused) {
3497                setAutoplayTimer();
3498                autoplayHoverPaused = false;
3499            }
3500        }
3501
3502        // keydown events on document
3503        function onDocumentKeydown (e) {
3504            e = getEvent(e);
3505            var keyIndex = [KEYS.LEFT, KEYS.RIGHT].indexOf(e.keyCode);
3506
3507            if (keyIndex >= 0) {
3508                onControlsClick(e, keyIndex === 0 ? -1 : 1);
3509            }
3510        }
3511
3512        // on key control
3513        function onControlsKeydown (e) {
3514            e = getEvent(e);
3515            var keyIndex = [KEYS.LEFT, KEYS.RIGHT].indexOf(e.keyCode);
3516
3517            if (keyIndex >= 0) {
3518                if (keyIndex === 0) {
3519                    if (!prevButton.disabled) { onControlsClick(e, -1); }
3520                } else if (!nextButton.disabled) {
3521                    onControlsClick(e, 1);
3522                }
3523            }
3524        }
3525
3526        // set focus
3527        function setFocus (el) {
3528            el.focus();
3529        }
3530
3531        // on key nav
3532        function onNavKeydown (e) {
3533            e = getEvent(e);
3534            var curElement = doc.activeElement;
3535            if (!hasAttr(curElement, 'data-nav')) { return; }
3536
3537            // var code = e.keyCode,
3538            var keyIndex = [KEYS.LEFT, KEYS.RIGHT, KEYS.ENTER, KEYS.SPACE].indexOf(e.keyCode),
3539                navIndex = Number(getAttr(curElement, 'data-nav'));
3540
3541            if (keyIndex >= 0) {
3542                if (keyIndex === 0) {
3543                    if (navIndex > 0) { setFocus(navItems[navIndex - 1]); }
3544                } else if (keyIndex === 1) {
3545                    if (navIndex < pages - 1) { setFocus(navItems[navIndex + 1]); }
3546                } else {
3547                    navClicked = navIndex;
3548                    goTo(navIndex, e);
3549                }
3550            }
3551        }
3552
3553        function getEvent (e) {
3554            e = e || win.event;
3555            return isTouchEvent(e) ? e.changedTouches[0] : e;
3556        }
3557        function getTarget (e) {
3558            return e.target || win.event.srcElement;
3559        }
3560
3561        function isTouchEvent (e) {
3562            return e.type.indexOf('touch') >= 0;
3563        }
3564
3565        function preventDefaultBehavior (e) {
3566            e.preventDefault ? e.preventDefault() : e.returnValue = false;
3567        }
3568
3569        function getMoveDirectionExpected () {
3570            return getTouchDirection(toDegree(lastPosition.y - initPosition.y, lastPosition.x - initPosition.x), swipeAngle) === options.axis;
3571        }
3572
3573        function onPanStart (e) {
3574            if (running) {
3575                if (preventActionWhenRunning) { return; } else { onTransitionEnd(); }
3576            }
3577
3578            if (autoplay && animating) { stopAutoplayTimer(); }
3579
3580            panStart = true;
3581            if (rafIndex) {
3582                caf(rafIndex);
3583                rafIndex = null;
3584            }
3585
3586            var $ = getEvent(e);
3587            events.emit(isTouchEvent(e) ? 'touchStart' : 'dragStart', info(e));
3588
3589            if (!isTouchEvent(e) && ['img', 'a'].indexOf(getLowerCaseNodeName(getTarget(e))) >= 0) {
3590                preventDefaultBehavior(e);
3591            }
3592
3593            lastPosition.x = initPosition.x = $.clientX;
3594            lastPosition.y = initPosition.y = $.clientY;
3595            if (carousel) {
3596                translateInit = parseFloat(container.style[transformAttr].replace(transformPrefix, ''));
3597                resetDuration(container, '0s');
3598            }
3599        }
3600
3601        function onPanMove (e) {
3602            if (panStart) {
3603                var $ = getEvent(e);
3604                lastPosition.x = $.clientX;
3605                lastPosition.y = $.clientY;
3606
3607                if (carousel) {
3608                    if (!rafIndex) { rafIndex = raf(function(){ panUpdate(e); }); }
3609                } else {
3610                    if (moveDirectionExpected === '?') { moveDirectionExpected = getMoveDirectionExpected(); }
3611                    if (moveDirectionExpected) { preventScroll = true; }
3612                }
3613
3614                if ((typeof e.cancelable !== 'boolean' || e.cancelable) && preventScroll) {
3615                    e.preventDefault();
3616                }
3617            }
3618        }
3619
3620        function panUpdate (e) {
3621            if (!moveDirectionExpected) {
3622                panStart = false;
3623                return;
3624            }
3625            caf(rafIndex);
3626            if (panStart) { rafIndex = raf(function(){ panUpdate(e); }); }
3627
3628            if (moveDirectionExpected === '?') { moveDirectionExpected = getMoveDirectionExpected(); }
3629            if (moveDirectionExpected) {
3630                if (!preventScroll && isTouchEvent(e)) { preventScroll = true; }
3631
3632                try {
3633                    if (e.type) { events.emit(isTouchEvent(e) ? 'touchMove' : 'dragMove', info(e)); }
3634                } catch(err) {}
3635
3636                var x = translateInit,
3637                    dist = getDist(lastPosition, initPosition);
3638                if (!horizontal || fixedWidth || autoWidth) {
3639                    x += dist;
3640                    x += 'px';
3641                } else {
3642                    var percentageX = TRANSFORM ? dist * items * 100 / ((viewport + gutter) * slideCountNew): dist * 100 / (viewport + gutter);
3643                    x += percentageX;
3644                    x += '%';
3645                }
3646
3647                container.style[transformAttr] = transformPrefix + x + transformPostfix;
3648            }
3649        }
3650
3651        function onPanEnd (e) {
3652            if (panStart) {
3653                if (rafIndex) {
3654                    caf(rafIndex);
3655                    rafIndex = null;
3656                }
3657                if (carousel) { resetDuration(container, ''); }
3658                panStart = false;
3659
3660                var $ = getEvent(e);
3661                lastPosition.x = $.clientX;
3662                lastPosition.y = $.clientY;
3663                var dist = getDist(lastPosition, initPosition);
3664
3665                if (Math.abs(dist)) {
3666                    // drag vs click
3667                    if (!isTouchEvent(e)) {
3668                        // prevent "click"
3669                        var target = getTarget(e);
3670                        addEvents(target, {'click': function preventClick (e) {
3671                                preventDefaultBehavior(e);
3672                                removeEvents(target, {'click': preventClick});
3673                            }});
3674                    }
3675
3676                    if (carousel) {
3677                        rafIndex = raf(function() {
3678                            if (horizontal && !autoWidth) {
3679                                var indexMoved = - dist * items / (viewport + gutter);
3680                                indexMoved = dist > 0 ? Math.floor(indexMoved) : Math.ceil(indexMoved);
3681                                index += indexMoved;
3682                            } else {
3683                                var moved = - (translateInit + dist);
3684                                if (moved <= 0) {
3685                                    index = indexMin;
3686                                } else if (moved >= slidePositions[slideCountNew - 1]) {
3687                                    index = indexMax;
3688                                } else {
3689                                    var i = 0;
3690                                    while (i < slideCountNew && moved >= slidePositions[i]) {
3691                                        index = i;
3692                                        if (moved > slidePositions[i] && dist < 0) { index += 1; }
3693                                        i++;
3694                                    }
3695                                }
3696                            }
3697
3698                            render(e, dist);
3699                            events.emit(isTouchEvent(e) ? 'touchEnd' : 'dragEnd', info(e));
3700                        });
3701                    } else {
3702                        if (moveDirectionExpected) {
3703                            onControlsClick(e, dist > 0 ? -1 : 1);
3704                        }
3705                    }
3706                }
3707            }
3708
3709            // reset
3710            if (options.preventScrollOnTouch === 'auto') { preventScroll = false; }
3711            if (swipeAngle) { moveDirectionExpected = '?'; }
3712            if (autoplay && !animating) { setAutoplayTimer(); }
3713        }
3714
3715        // === RESIZE FUNCTIONS === //
3716        // (slidePositions, index, items) => vertical_conentWrapper.height
3717        function updateContentWrapperHeight () {
3718            var wp = middleWrapper ? middleWrapper : innerWrapper;
3719            wp.style.height = slidePositions[index + items] - slidePositions[index] + 'px';
3720        }
3721
3722        function getPages () {
3723            var rough = fixedWidth ? (fixedWidth + gutter) * slideCount / viewport : slideCount / items;
3724            return Math.min(Math.ceil(rough), slideCount);
3725        }
3726
3727        /*
3728         * 1. update visible nav items list
3729         * 2. add "hidden" attributes to previous visible nav items
3730         * 3. remove "hidden" attrubutes to new visible nav items
3731         */
3732        function updateNavVisibility () {
3733            if (!nav || navAsThumbnails) { return; }
3734
3735            if (pages !== pagesCached) {
3736                var min = pagesCached,
3737                    max = pages,
3738                    fn = showElement;
3739
3740                if (pagesCached > pages) {
3741                    min = pages;
3742                    max = pagesCached;
3743                    fn = hideElement;
3744                }
3745
3746                while (min < max) {
3747                    fn(navItems[min]);
3748                    min++;
3749                }
3750
3751                // cache pages
3752                pagesCached = pages;
3753            }
3754        }
3755
3756        function info (e) {
3757            return {
3758                container: container,
3759                slideItems: slideItems,
3760                navContainer: navContainer,
3761                navItems: navItems,
3762                controlsContainer: controlsContainer,
3763                hasControls: hasControls,
3764                prevButton: prevButton,
3765                nextButton: nextButton,
3766                items: items,
3767                slideBy: slideBy,
3768                cloneCount: cloneCount,
3769                slideCount: slideCount,
3770                slideCountNew: slideCountNew,
3771                index: index,
3772                indexCached: indexCached,
3773                displayIndex: getCurrentSlide(),
3774                navCurrentIndex: navCurrentIndex,
3775                navCurrentIndexCached: navCurrentIndexCached,
3776                pages: pages,
3777                pagesCached: pagesCached,
3778                sheet: sheet,
3779                isOn: isOn,
3780                event: e || {},
3781            };
3782        }
3783
3784        return {
3785            version: '2.9.2',
3786            getInfo: info,