/*!
 * lightgallery | 2.9.1 | April 3rd 2026
 * http://www.lightgalleryjs.com/
 * Copyright (c) 2020 Sachin Neravath;
 * @license GPLv3
 */

/*! *****************************************************************************
Copyright (c) Microsoft Corporation.

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
***************************************************************************** */

var __assign = function() {
    __assign = Object.assign || function __assign(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};

var thumbnailsSettings = {
    thumbnail: true,
    animateThumb: true,
    currentPagerPosition: 'middle',
    alignThumbnails: 'middle',
    thumbWidth: 100,
    thumbHeight: '80px',
    thumbMargin: 5,
    appendThumbnailsTo: '.lg-components',
    toggleThumb: false,
    enableThumbDrag: true,
    enableThumbSwipe: true,
    thumbnailSwipeThreshold: 10,
    loadYouTubeThumbnail: true,
    youTubeThumbSize: 1,
    thumbnailPluginStrings: {
        toggleThumbnails: 'Toggle thumbnails',
    },
};

/**
 * List of lightGallery events
 * All events should be documented here
 * Below interfaces are used to build the website documentations
 * */
var lGEvents = {
    afterAppendSlide: 'lgAfterAppendSlide',
    init: 'lgInit',
    hasVideo: 'lgHasVideo',
    containerResize: 'lgContainerResize',
    updateSlides: 'lgUpdateSlides',
    afterAppendSubHtml: 'lgAfterAppendSubHtml',
    beforeOpen: 'lgBeforeOpen',
    afterOpen: 'lgAfterOpen',
    slideItemLoad: 'lgSlideItemLoad',
    beforeSlide: 'lgBeforeSlide',
    afterSlide: 'lgAfterSlide',
    posterClick: 'lgPosterClick',
    dragStart: 'lgDragStart',
    dragMove: 'lgDragMove',
    dragEnd: 'lgDragEnd',
    beforeNextSlide: 'lgBeforeNextSlide',
    beforePrevSlide: 'lgBeforePrevSlide',
    beforeClose: 'lgBeforeClose',
    afterClose: 'lgAfterClose',
    rotateLeft: 'lgRotateLeft',
    rotateRight: 'lgRotateRight',
    flipHorizontal: 'lgFlipHorizontal',
    flipVertical: 'lgFlipVertical',
    autoplay: 'lgAutoplay',
    autoplayStart: 'lgAutoplayStart',
    autoplayStop: 'lgAutoplayStop',
};

var Thumbnail = /** @class */ (function () {
    function Thumbnail(instance, $LG) {
        this.thumbOuterWidth = 0;
        this.thumbTotalWidth = 0;
        this.translateX = 0;
        this.thumbClickable = false;
        // get lightGallery core plugin instance
        this.core = instance;
        this.$LG = $LG;
        return this;
    }
    Thumbnail.prototype.init = function () {
        // extend module default settings with lightGallery core settings
        this.settings = __assign(__assign({}, thumbnailsSettings), this.core.settings);
        this.thumbOuterWidth = 0;
        this.thumbTotalWidth =
            this.core.galleryItems.length *
                (this.settings.thumbWidth + this.settings.thumbMargin);
        // Thumbnail animation value
        this.translateX = 0;
        this.setAnimateThumbStyles();
        if (!this.core.settings.allowMediaOverlap) {
            this.settings.toggleThumb = false;
        }
        if (this.settings.thumbnail) {
            this.build();
            if (this.settings.animateThumb) {
                if (this.settings.enableThumbDrag) {
                    this.enableThumbDrag();
                }
                if (this.settings.enableThumbSwipe) {
                    this.enableThumbSwipe();
                }
                this.thumbClickable = false;
            }
            else {
                this.thumbClickable = true;
            }
            this.toggleThumbBar();
            this.thumbKeyPress();
        }
    };
    Thumbnail.prototype.build = function () {
        var _this = this;
        this.setThumbMarkup();
        this.manageActiveClassOnSlideChange();
        this.$lgThumb.first().on('click.lg touchend.lg', function (e) {
            var $target = _this.$LG(e.target);
            if (!$target.hasAttribute('data-lg-item-id')) {
                return;
            }
            setTimeout(function () {
                // In IE9 and bellow touch does not support
                // Go to slide if browser does not support css transitions
                if (_this.thumbClickable && !_this.core.lgBusy) {
                    var index = parseInt($target.attr('data-lg-item-id'));
                    _this.core.slide(index, false, true, false);
                }
            }, 50);
        });
        this.core.LGel.on(lGEvents.beforeSlide + ".thumb", function (event) {
            var index = event.detail.index;
            _this.animateThumb(index);
        });
        this.core.LGel.on(lGEvents.beforeOpen + ".thumb", function () {
            _this.thumbOuterWidth = _this.core.outer.get().offsetWidth;
        });
        this.core.LGel.on(lGEvents.updateSlides + ".thumb", function () {
            _this.rebuildThumbnails();
        });
        this.core.LGel.on(lGEvents.containerResize + ".thumb", function () {
            if (!_this.core.lgOpened)
                return;
            setTimeout(function () {
                _this.thumbOuterWidth = _this.core.outer.get().offsetWidth;
                _this.animateThumb(_this.core.index);
                _this.thumbOuterWidth = _this.core.outer.get().offsetWidth;
            }, 50);
        });
    };
    Thumbnail.prototype.setThumbMarkup = function () {
        var thumbOuterClassNames = 'lg-thumb-outer ';
        if (this.settings.alignThumbnails) {
            thumbOuterClassNames += "lg-thumb-align-" + this.settings.alignThumbnails;
        }
        var html = "<div class=\"" + thumbOuterClassNames + "\">\n        <div class=\"lg-thumb lg-group\">\n        </div>\n        </div>";
        this.core.outer.addClass('lg-has-thumb');
        if (this.settings.appendThumbnailsTo === '.lg-components') {
            this.core.$lgComponents.append(html);
        }
        else {
            this.core.outer.append(html);
        }
        this.$thumbOuter = this.core.outer.find('.lg-thumb-outer').first();
        this.$lgThumb = this.core.outer.find('.lg-thumb').first();
        if (this.settings.animateThumb) {
            this.core.outer
                .find('.lg-thumb')
                .css('transition-duration', this.core.settings.speed + 'ms')
                .css('width', this.thumbTotalWidth + 'px')
                .css('position', 'relative');
        }
        this.setThumbItemHtml(this.core.galleryItems);
    };
    Thumbnail.prototype.enableThumbDrag = function () {
        var _this = this;
        var thumbDragUtils = {
            cords: {
                startX: 0,
                endX: 0,
            },
            isMoved: false,
            newTranslateX: 0,
            startTime: new Date(),
            endTime: new Date(),
            touchMoveTime: 0,
        };
        var isDragging = false;
        this.$thumbOuter.addClass('lg-grab');
        this.core.outer
            .find('.lg-thumb')
            .first()
            .on('mousedown.lg.thumb', function (e) {
            if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
                // execute only on .lg-object
                e.preventDefault();
                thumbDragUtils.cords.startX = e.pageX;
                thumbDragUtils.startTime = new Date();
                _this.thumbClickable = false;
                isDragging = true;
                // ** Fix for webkit cursor issue https://code.google.com/p/chromium/issues/detail?id=26723
                _this.core.outer.get().scrollLeft += 1;
                _this.core.outer.get().scrollLeft -= 1;
                // *
                _this.$thumbOuter
                    .removeClass('lg-grab')
                    .addClass('lg-grabbing');
            }
        });
        this.$LG(window).on("mousemove.lg.thumb.global" + this.core.lgId, function (e) {
            if (!_this.core.lgOpened)
                return;
            if (isDragging) {
                thumbDragUtils.cords.endX = e.pageX;
                thumbDragUtils = _this.onThumbTouchMove(thumbDragUtils);
            }
        });
        this.$LG(window).on("mouseup.lg.thumb.global" + this.core.lgId, function () {
            if (!_this.core.lgOpened)
                return;
            if (thumbDragUtils.isMoved) {
                thumbDragUtils = _this.onThumbTouchEnd(thumbDragUtils);
            }
            else {
                _this.thumbClickable = true;
            }
            if (isDragging) {
                isDragging = false;
                _this.$thumbOuter.removeClass('lg-grabbing').addClass('lg-grab');
            }
        });
    };
    Thumbnail.prototype.enableThumbSwipe = function () {
        var _this = this;
        var thumbDragUtils = {
            cords: {
                startX: 0,
                endX: 0,
            },
            isMoved: false,
            newTranslateX: 0,
            startTime: new Date(),
            endTime: new Date(),
            touchMoveTime: 0,
        };
        this.$lgThumb.on('touchstart.lg', function (e) {
            if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
                e.preventDefault();
                thumbDragUtils.cords.startX = e.targetTouches[0].pageX;
                _this.thumbClickable = false;
                thumbDragUtils.startTime = new Date();
            }
        });
        this.$lgThumb.on('touchmove.lg', function (e) {
            if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
                e.preventDefault();
                thumbDragUtils.cords.endX = e.targetTouches[0].pageX;
                thumbDragUtils = _this.onThumbTouchMove(thumbDragUtils);
            }
        });
        this.$lgThumb.on('touchend.lg', function () {
            if (thumbDragUtils.isMoved) {
                thumbDragUtils = _this.onThumbTouchEnd(thumbDragUtils);
            }
            else {
                _this.thumbClickable = true;
            }
        });
    };
    // Rebuild thumbnails
    Thumbnail.prototype.rebuildThumbnails = function () {
        var _this = this;
        // Remove transitions
        this.$thumbOuter.addClass('lg-rebuilding-thumbnails');
        setTimeout(function () {
            _this.thumbTotalWidth =
                _this.core.galleryItems.length *
                    (_this.settings.thumbWidth + _this.settings.thumbMargin);
            _this.$lgThumb.css('width', _this.thumbTotalWidth + 'px');
            _this.$lgThumb.empty();
            _this.setThumbItemHtml(_this.core.galleryItems);
            _this.animateThumb(_this.core.index);
        }, 50);
        setTimeout(function () {
            _this.$thumbOuter.removeClass('lg-rebuilding-thumbnails');
        }, 200);
    };
    // @ts-check
    Thumbnail.prototype.setTranslate = function (value) {
        this.$lgThumb.css('transform', 'translate3d(-' + value + 'px, 0px, 0px)');
    };
    Thumbnail.prototype.getPossibleTransformX = function (left) {
        if (left > this.thumbTotalWidth - this.thumbOuterWidth) {
            left = this.thumbTotalWidth - this.thumbOuterWidth;
        }
        if (left < 0) {
            left = 0;
        }
        return left;
    };
    Thumbnail.prototype.animateThumb = function (index) {
        this.$lgThumb.css('transition-duration', this.core.settings.speed + 'ms');
        if (this.settings.animateThumb) {
            var position = 0;
            switch (this.settings.currentPagerPosition) {
                case 'left':
                    position = 0;
                    break;
                case 'middle':
                    position =
                        this.thumbOuterWidth / 2 - this.settings.thumbWidth / 2;
                    break;
                case 'right':
                    position = this.thumbOuterWidth - this.settings.thumbWidth;
            }
            this.translateX =
                (this.settings.thumbWidth + this.settings.thumbMargin) * index -
                    1 -
                    position;
            if (this.translateX > this.thumbTotalWidth - this.thumbOuterWidth) {
                this.translateX = this.thumbTotalWidth - this.thumbOuterWidth;
            }
            if (this.translateX < 0) {
                this.translateX = 0;
            }
            this.setTranslate(this.translateX);
        }
    };
    Thumbnail.prototype.onThumbTouchMove = function (thumbDragUtils) {
        thumbDragUtils.newTranslateX = this.translateX;
        thumbDragUtils.isMoved = true;
        thumbDragUtils.touchMoveTime = new Date().valueOf();
        thumbDragUtils.newTranslateX -=
            thumbDragUtils.cords.endX - thumbDragUtils.cords.startX;
        thumbDragUtils.newTranslateX = this.getPossibleTransformX(thumbDragUtils.newTranslateX);
        // move current slide
        this.setTranslate(thumbDragUtils.newTranslateX);
        this.$thumbOuter.addClass('lg-dragging');
        return thumbDragUtils;
    };
    Thumbnail.prototype.onThumbTouchEnd = function (thumbDragUtils) {
        thumbDragUtils.isMoved = false;
        thumbDragUtils.endTime = new Date();
        this.$thumbOuter.removeClass('lg-dragging');
        var touchDuration = thumbDragUtils.endTime.valueOf() -
            thumbDragUtils.startTime.valueOf();
        var distanceXnew = thumbDragUtils.cords.endX - thumbDragUtils.cords.startX;
        var speedX = Math.abs(distanceXnew) / touchDuration;
        // Some magical numbers
        // Can be improved
        if (speedX > 0.15 &&
            thumbDragUtils.endTime.valueOf() - thumbDragUtils.touchMoveTime < 30) {
            speedX += 1;
            if (speedX > 2) {
                speedX += 1;
            }
            speedX =
                speedX +
                    speedX * (Math.abs(distanceXnew) / this.thumbOuterWidth);
            this.$lgThumb.css('transition-duration', Math.min(speedX - 1, 2) + 'settings');
            distanceXnew = distanceXnew * speedX;
            this.translateX = this.getPossibleTransformX(this.translateX - distanceXnew);
            this.setTranslate(this.translateX);
        }
        else {
            this.translateX = thumbDragUtils.newTranslateX;
        }
        if (Math.abs(thumbDragUtils.cords.endX - thumbDragUtils.cords.startX) <
            this.settings.thumbnailSwipeThreshold) {
            this.thumbClickable = true;
        }
        return thumbDragUtils;
    };
    Thumbnail.prototype.getThumbHtml = function (thumb, index, alt) {
        var slideVideoInfo = this.core.galleryItems[index].__slideVideoInfo || {};
        var thumbImg;
        if (slideVideoInfo.youtube) {
            if (this.settings.loadYouTubeThumbnail) {
                thumbImg =
                    '//img.youtube.com/vi/' +
                        slideVideoInfo.youtube[1] +
                        '/' +
                        this.settings.youTubeThumbSize +
                        '.jpg';
            }
            else {
                thumbImg = thumb;
            }
        }
        else {
            thumbImg = thumb;
        }
        var div = document.createElement('div');
        div.setAttribute('data-lg-item-id', index + '');
        div.className = "lg-thumb-item " + (index === this.core.index ? 'active' : '');
        div.style.cssText = "width: " + this.settings.thumbWidth + "px; height: " + this.settings.thumbHeight + "; margin-right: " + this.settings.thumbMargin + "px;";
        var img = document.createElement('img');
        img.alt = alt || '';
        img.setAttribute('data-lg-item-id', index + '');
        img.src = thumbImg;
        div.appendChild(img);
        return div;
    };
    Thumbnail.prototype.setThumbItemHtml = function (items) {
        for (var i = 0; i < items.length; i++) {
            var thumb = this.getThumbHtml(items[i].thumb, i, items[i].alt);
            this.$lgThumb.append(thumb);
        }
    };
    Thumbnail.prototype.setAnimateThumbStyles = function () {
        if (this.settings.animateThumb) {
            this.core.outer.addClass('lg-animate-thumb');
        }
    };
    // Manage thumbnail active calss
    Thumbnail.prototype.manageActiveClassOnSlideChange = function () {
        var _this = this;
        // manage active class for thumbnail
        this.core.LGel.on(lGEvents.beforeSlide + ".thumb", function (event) {
            var $thumb = _this.core.outer.find('.lg-thumb-item');
            var index = event.detail.index;
            $thumb.removeClass('active');
            $thumb.eq(index).addClass('active');
        });
    };
    // Toggle thumbnail bar
    Thumbnail.prototype.toggleThumbBar = function () {
        var _this = this;
        if (this.settings.toggleThumb) {
            this.core.outer.addClass('lg-can-toggle');
            this.core.$toolbar.append('<button type="button" aria-label="' +
                this.settings.thumbnailPluginStrings['toggleThumbnails'] +
                '" class="lg-toggle-thumb lg-icon"></button>');
            this.core.outer
                .find('.lg-toggle-thumb')
                .first()
                .on('click.lg', function () {
                _this.core.outer.toggleClass('lg-components-open');
            });
        }
    };
    Thumbnail.prototype.thumbKeyPress = function () {
        var _this = this;
        this.$LG(window).on("keydown.lg.thumb.global" + this.core.lgId, function (e) {
            if (!_this.core.lgOpened || !_this.settings.toggleThumb)
                return;
            if (e.keyCode === 38) {
                e.preventDefault();
                _this.core.outer.addClass('lg-components-open');
            }
            else if (e.keyCode === 40) {
                e.preventDefault();
                _this.core.outer.removeClass('lg-components-open');
            }
        });
    };
    Thumbnail.prototype.destroy = function () {
        if (this.settings.thumbnail) {
            this.$LG(window).off(".lg.thumb.global" + this.core.lgId);
            this.core.LGel.off('.lg.thumb');
            this.core.LGel.off('.thumb');
            this.$thumbOuter.remove();
            this.core.outer.removeClass('lg-has-thumb');
        }
    };
    return Thumbnail;
}());

export { Thumbnail as default };
//# sourceMappingURL=lg-thumbnail.es5.js.map
