/*! lg-thumbnail - v1.1.0 - 2017-08-08

(function (root, factory) {

if (typeof define === 'function' && define.amd) {
  // AMD. Register as an anonymous module unless amdModuleId is set
  define(['jquery'], function (a0) {
    return (factory(a0));
  });
} else if (typeof exports === 'object') {
  // Node. Does not work with strict CommonJS, but
  // only CommonJS-like environments that support module.exports,
  // like Node.
  module.exports = factory(require('jquery'));
} else {
  factory(jQuery);
}

}(this, function ($) {

(function() {

'use strict';

var defaults = {
    thumbnail: true,

    animateThumb: true,
    currentPagerPosition: 'middle',

    thumbWidth: 100,
    thumbHeight: '80px',
    thumbContHeight: 100,
    thumbMargin: 5,

    exThumbImage: false,
    showThumbByDefault: true,
    toogleThumb: true,
    pullCaptionUp: true,

    enableThumbDrag: true,
    enableThumbSwipe: true,
    swipeThreshold: 50,

    loadYoutubeThumbnail: true,
    youtubeThumbSize: 1,

    loadVimeoThumbnail: true,
    vimeoThumbSize: 'thumbnail_small',

    loadDailymotionThumbnail: true
};

var Thumbnail = function(element) {

    // get lightGallery core plugin data
    this.core = $(element).data('lightGallery');

    // extend module default settings with lightGallery core settings
    this.core.s = $.extend({}, defaults, this.core.s);

    this.$el = $(element);
    this.$thumbOuter = null;
    this.thumbOuterWidth = 0;
    this.thumbTotalWidth = (this.core.$items.length * (this.core.s.thumbWidth + this.core.s.thumbMargin));
    this.thumbIndex = this.core.index;

    if (this.core.s.animateThumb) {
        this.core.s.thumbHeight = '100%';
    }

    // Thumbnail animation value
    this.left = 0;

    this.init();

    return this;
};

Thumbnail.prototype.init = function() {
    var _this = this;
    if (this.core.s.thumbnail && this.core.$items.length > 1) {
        if (this.core.s.showThumbByDefault) {
            setTimeout(function(){
                _this.core.$outer.addClass('lg-thumb-open');
            }, 700);
        }

        if (this.core.s.pullCaptionUp) {
            this.core.$outer.addClass('lg-pull-caption-up');
        }

        this.build();
        if (this.core.s.animateThumb && this.core.doCss()) {
            if (this.core.s.enableThumbDrag) {
                this.enableThumbDrag();
            }

            if (this.core.s.enableThumbSwipe) {
                this.enableThumbSwipe();
            }

            this.thumbClickable = false;
        } else {
            this.thumbClickable = true;
        }

        this.toogle();
        this.thumbkeyPress();
    }
};

Thumbnail.prototype.build = function() {
    var _this = this;
    var thumbList = '';
    var vimeoErrorThumbSize = '';
    var $thumb;
    var html = '<div class="lg-thumb-outer">' +
        '<div class="lg-thumb lg-group">' +
        '</div>' +
        '</div>';

    switch (this.core.s.vimeoThumbSize) {
        case 'thumbnail_large':
            vimeoErrorThumbSize = '640';
            break;
        case 'thumbnail_medium':
            vimeoErrorThumbSize = '200x150';
            break;
        case 'thumbnail_small':
            vimeoErrorThumbSize = '100x75';
    }

    _this.core.$outer.addClass('lg-has-thumb');

    _this.core.$outer.find('.lg').append(html);

    _this.$thumbOuter = _this.core.$outer.find('.lg-thumb-outer');
    _this.thumbOuterWidth = _this.$thumbOuter.width();

    if (_this.core.s.animateThumb) {
        _this.core.$outer.find('.lg-thumb').css({
            width: _this.thumbTotalWidth + 'px',
            position: 'relative'
        });
    }

    if (this.core.s.animateThumb) {
        _this.$thumbOuter.css('height', _this.core.s.thumbContHeight + 'px');
    }

    function getThumb(src, thumb, index) {
        var isVideo = _this.core.isVideo(src, index) || {};
        var thumbImg;
        var vimeoId = '';

        if (isVideo.youtube || isVideo.vimeo || isVideo.dailymotion) {
            if (isVideo.youtube) {
                if (_this.core.s.loadYoutubeThumbnail) {
                    thumbImg = '//img.youtube.com/vi/' + isVideo.youtube[1] + '/' + _this.core.s.youtubeThumbSize + '.jpg';
                } else {
                    thumbImg = thumb;
                }
            } else if (isVideo.vimeo) {
                if (_this.core.s.loadVimeoThumbnail) {
                    thumbImg = '//i.vimeocdn.com/video/error_' + vimeoErrorThumbSize + '.jpg';
                    vimeoId = isVideo.vimeo[1];
                } else {
                    thumbImg = thumb;
                }
            } else if (isVideo.dailymotion) {
                if (_this.core.s.loadDailymotionThumbnail) {
                    thumbImg = '//www.dailymotion.com/thumbnail/video/' + isVideo.dailymotion[1];
                } else {
                    thumbImg = thumb;
                }
            }
        } else {
            thumbImg = thumb;
        }

        thumbList += '<div data-vimeo-id="' + vimeoId + '" class="lg-thumb-item" style="width:' + _this.core.s.thumbWidth + 'px; height: ' + _this.core.s.thumbHeight + '; margin-right: ' + _this.core.s.thumbMargin + 'px"><img src="' + thumbImg + '" /></div>';
        vimeoId = '';
    }

    if (_this.core.s.dynamic) {
        for (var i = 0; i < _this.core.s.dynamicEl.length; i++) {
            getThumb(_this.core.s.dynamicEl[i].src, _this.core.s.dynamicEl[i].thumb, i);
        }
    } else {
        _this.core.$items.each(function(i) {

            if (!_this.core.s.exThumbImage) {
                getThumb($(this).attr('href') || $(this).attr('data-src'), $(this).find('img').attr('src'), i);
            } else {
                getThumb($(this).attr('href') || $(this).attr('data-src'), $(this).attr(_this.core.s.exThumbImage), i);
            }

        });
    }

    _this.core.$outer.find('.lg-thumb').html(thumbList);

    $thumb = _this.core.$outer.find('.lg-thumb-item');

    // Load vimeo thumbnails
    $thumb.each(function() {
        var $this = $(this);
        var vimeoVideoId = $this.attr('data-vimeo-id');

        if (vimeoVideoId) {
            $.getJSON('//www.vimeo.com/api/v2/video/' + vimeoVideoId + '.json?callback=?', {
                format: 'json'
            }, function(data) {
                $this.find('img').attr('src', data[0][_this.core.s.vimeoThumbSize]);
            });
        }
    });

    // manage active class for thumbnail
    $thumb.eq(_this.core.index).addClass('active');
    _this.core.$el.on('onBeforeSlide.lg.tm', function() {
        $thumb.removeClass('active');
        $thumb.eq(_this.core.index).addClass('active');
    });

    $thumb.on('click.lg touchend.lg', function() {
        var _$this = $(this);
        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) || !_this.core.doCss()) {
                _this.core.index = _$this.index();
                _this.core.slide(_this.core.index, false, true, false);
            }
        }, 50);
    });

    _this.core.$el.on('onBeforeSlide.lg.tm', function() {
        _this.animateThumb(_this.core.index);
    });

    $(window).on('resize.lg.thumb orientationchange.lg.thumb', function() {
        setTimeout(function() {
            _this.animateThumb(_this.core.index);
            _this.thumbOuterWidth = _this.$thumbOuter.width();
        }, 200);
    });

};

Thumbnail.prototype.setTranslate = function(value) {
    // jQuery supports Automatic CSS prefixing since jQuery 1.8.0
    this.core.$outer.find('.lg-thumb').css({
        transform: 'translate3d(-' + (value) + 'px, 0px, 0px)'
    });
};

Thumbnail.prototype.animateThumb = function(index) {
    var $thumb = this.core.$outer.find('.lg-thumb');
    if (this.core.s.animateThumb) {
        var position;
        switch (this.core.s.currentPagerPosition) {
            case 'left':
                position = 0;
                break;
            case 'middle':
                position = (this.thumbOuterWidth / 2) - (this.core.s.thumbWidth / 2);
                break;
            case 'right':
                position = this.thumbOuterWidth - this.core.s.thumbWidth;
        }
        this.left = ((this.core.s.thumbWidth + this.core.s.thumbMargin) * index - 1) - position;
        if (this.left > (this.thumbTotalWidth - this.thumbOuterWidth)) {
            this.left = this.thumbTotalWidth - this.thumbOuterWidth;
        }

        if (this.left < 0) {
            this.left = 0;
        }

        if (this.core.lGalleryOn) {
            if (!$thumb.hasClass('on')) {
                this.core.$outer.find('.lg-thumb').css('transition-duration', this.core.s.speed + 'ms');
            }

            if (!this.core.doCss()) {
                $thumb.animate({
                    left: -this.left + 'px'
                }, this.core.s.speed);
            }
        } else {
            if (!this.core.doCss()) {
                $thumb.css('left', -this.left + 'px');
            }
        }

        this.setTranslate(this.left);

    }
};

// Enable thumbnail dragging and swiping
Thumbnail.prototype.enableThumbDrag = function() {

    var _this = this;
    var startCoords = 0;
    var endCoords = 0;
    var isDraging = false;
    var isMoved = false;
    var tempLeft = 0;

    _this.$thumbOuter.addClass('lg-grab');

    _this.core.$outer.find('.lg-thumb').on('mousedown.lg.thumb', function(e) {
        if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
            // execute only on .lg-object
            e.preventDefault();
            startCoords = e.pageX;
            isDraging = true;

            // ** Fix for webkit cursor issue https://code.google.com/p/chromium/issues/detail?id=26723
            _this.core.$outer.scrollLeft += 1;
            _this.core.$outer.scrollLeft -= 1;

            // *
            _this.thumbClickable = false;
            _this.$thumbOuter.removeClass('lg-grab').addClass('lg-grabbing');
        }
    });

    $(window).on('mousemove.lg.thumb', function(e) {
        if (isDraging) {
            tempLeft = _this.left;
            isMoved = true;
            endCoords = e.pageX;

            _this.$thumbOuter.addClass('lg-dragging');

            tempLeft = tempLeft - (endCoords - startCoords);

            if (tempLeft > (_this.thumbTotalWidth - _this.thumbOuterWidth)) {
                tempLeft = _this.thumbTotalWidth - _this.thumbOuterWidth;
            }

            if (tempLeft < 0) {
                tempLeft = 0;
            }

            // move current slide
            _this.setTranslate(tempLeft);

        }
    });

    $(window).on('mouseup.lg.thumb', function() {
        if (isMoved) {
            isMoved = false;
            _this.$thumbOuter.removeClass('lg-dragging');

            _this.left = tempLeft;

            if (Math.abs(endCoords - startCoords) < _this.core.s.swipeThreshold) {
                _this.thumbClickable = true;
            }

        } else {
            _this.thumbClickable = true;
        }

        if (isDraging) {
            isDraging = false;
            _this.$thumbOuter.removeClass('lg-grabbing').addClass('lg-grab');
        }
    });

};

Thumbnail.prototype.enableThumbSwipe = function() {
    var _this = this;
    var startCoords = 0;
    var endCoords = 0;
    var isMoved = false;
    var tempLeft = 0;

    _this.core.$outer.find('.lg-thumb').on('touchstart.lg', function(e) {
        if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
            e.preventDefault();
            startCoords = e.originalEvent.targetTouches[0].pageX;
            _this.thumbClickable = false;
        }
    });

    _this.core.$outer.find('.lg-thumb').on('touchmove.lg', function(e) {
        if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
            e.preventDefault();
            endCoords = e.originalEvent.targetTouches[0].pageX;
            isMoved = true;

            _this.$thumbOuter.addClass('lg-dragging');

            tempLeft = _this.left;

            tempLeft = tempLeft - (endCoords - startCoords);

            if (tempLeft > (_this.thumbTotalWidth - _this.thumbOuterWidth)) {
                tempLeft = _this.thumbTotalWidth - _this.thumbOuterWidth;
            }

            if (tempLeft < 0) {
                tempLeft = 0;
            }

            // move current slide
            _this.setTranslate(tempLeft);

        }
    });

    _this.core.$outer.find('.lg-thumb').on('touchend.lg', function() {
        if (_this.thumbTotalWidth > _this.thumbOuterWidth) {

            if (isMoved) {
                isMoved = false;
                _this.$thumbOuter.removeClass('lg-dragging');
                if (Math.abs(endCoords - startCoords) < _this.core.s.swipeThreshold) {
                    _this.thumbClickable = true;
                }

                _this.left = tempLeft;
            } else {
                _this.thumbClickable = true;
            }
        } else {
            _this.thumbClickable = true;
        }
    });

};

Thumbnail.prototype.toogle = function() {
    var _this = this;
    if (_this.core.s.toogleThumb) {
        _this.core.$outer.addClass('lg-can-toggle');
        _this.$thumbOuter.append('<span class="lg-toogle-thumb lg-icon"></span>');
        _this.core.$outer.find('.lg-toogle-thumb').on('click.lg', function() {
            _this.core.$outer.toggleClass('lg-thumb-open');
        });
    }
};

Thumbnail.prototype.thumbkeyPress = function() {
    var _this = this;
    $(window).on('keydown.lg.thumb', function(e) {
        if (e.keyCode === 38) {
            e.preventDefault();
            _this.core.$outer.addClass('lg-thumb-open');
        } else if (e.keyCode === 40) {
            e.preventDefault();
            _this.core.$outer.removeClass('lg-thumb-open');
        }
    });
};

Thumbnail.prototype.destroy = function() {
    if (this.core.s.thumbnail && this.core.$items.length > 1) {
        $(window).off('resize.lg.thumb orientationchange.lg.thumb keydown.lg.thumb');
        this.$thumbOuter.remove();
        this.core.$outer.removeClass('lg-has-thumb');
    }
};

$.fn.lightGallery.modules.Thumbnail = Thumbnail;

})();

}));