myblog/themes/Wikitten/source/libs/lightgallery/js/lg-thumbnail.js

/**!
 * lg-thumbnail.js | 0.0.4 | August 9th 2016
 * http://sachinchoolur.github.io/lg-thumbnail.js
 * Copyright (c) 2016 Sachin N; 
 * @license Apache 2.0 
 */(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.LgThumbnail = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
(function (global, factory) {
    if (typeof define === "function" && define.amd) {
        define([], factory);
    } else if (typeof exports !== "undefined") {
        factory();
    } else {
        var mod = {
            exports: {}
        };
        factory();
        global.lgThumbnail = mod.exports;
    }
})(this, function () {
    'use strict';

    var _extends = Object.assign || function (target) {
        for (var i = 1; i < arguments.length; i++) {
            var source = arguments[i];

            for (var key in source) {
                if (Object.prototype.hasOwnProperty.call(source, key)) {
                    target[key] = source[key];
                }
            }
        }

        return target;
    };

    var thumbnailDefaults = {
        thumbnail: true,

        animateThumb: true,
        currentPagerPosition: 'middle',

        thumbWidth: 100,
        thumbContHeight: 100,
        thumbMargin: 5,

        exThumbImage: false,
        showThumbByDefault: true,
        toggleThumb: true,
        pullCaptionUp: true,

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

        loadYoutubeThumbnail: true,
        youtubeThumbSize: 1,

        loadVimeoThumbnail: true,
        vimeoThumbSize: 'thumbnail_small',

        loadDailymotionThumbnail: true
    };

    var Thumbnail = function Thumbnail(element) {

        this.el = element;

        this.core = window.lgData[this.el.getAttribute('lg-uid')];
        this.core.s = _extends({}, thumbnailDefaults, this.core.s);

        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;

        // 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 () {
                    utils.addClass(_this.core.outer, 'lg-thumb-open');
                }, 700);
            }

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

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

                if (this.core.s.enableThumbSwipe && this.core.isTouch && this.core.doCss()) {
                    this.enableThumbSwipe();
                }

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

            this.toggle();
            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 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';
        }

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

        _this.core.outer.querySelector('.lg').insertAdjacentHTML('beforeend', html);

        _this.thumbOuter = _this.core.outer.querySelector('.lg-thumb-outer');
        _this.thumbOuterWidth = _this.thumbOuter.offsetWidth;

        if (_this.core.s.animateThumb) {
            _this.core.outer.querySelector('.lg-thumb').style.width = _this.thumbTotalWidth + 'px';
            _this.core.outer.querySelector('.lg-thumb').style.position = 'relative';
        }

        if (this.core.s.animateThumb) {
            _this.thumbOuter.style.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; margin-right: ' + _this.core.s.thumbMargin + 'px"><img src="' + thumbImg + '" /></div>';
            vimeoId = '';
        }

        if (_this.core.s.dynamic) {
            for (var j = 0; j < _this.core.s.dynamicEl.length; j++) {
                getThumb(_this.core.s.dynamicEl[j].src, _this.core.s.dynamicEl[j].thumb, j);
            }
        } else {
            for (var i = 0; i < _this.core.items.length; i++) {
                if (!_this.core.s.exThumbImage) {
                    getThumb(_this.core.items[i].getAttribute('href') || _this.core.items[i].getAttribute('data-src'), _this.core.items[i].querySelector('img').getAttribute('src'), i);
                } else {
                    getThumb(_this.core.items[i].getAttribute('href') || _this.core.items[i].getAttribute('data-src'), _this.core.items[i].getAttribute(_this.core.s.exThumbImage), i);
                }
            }
        }

        _this.core.outer.querySelector('.lg-thumb').innerHTML = thumbList;

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

        for (var n = 0; n < $thumb.length; n++) {

            /*jshint loopfunc: true */
            (function (index) {
                var $this = $thumb[index];
                var vimeoVideoId = $this.getAttribute('data-vimeo-id');
                if (vimeoVideoId) {

                    window['lgJsonP' + _this.el.getAttribute('lg-uid') + '' + n] = function (content) {
                        $this.querySelector('img').setAttribute('src', content[0][_this.core.s.vimeoThumbSize]);
                    };

                    var script = document.createElement('script');
                    script.className = 'lg-script';
                    script.src = '//www.vimeo.com/api/v2/video/' + vimeoVideoId + '.json?callback=lgJsonP' + _this.el.getAttribute('lg-uid') + '' + n;
                    document.body.appendChild(script);
                }
            })(n);
        }

        // manage active class for thumbnail
        utils.addClass($thumb[_this.core.index], 'active');
        utils.on(_this.core.el, 'onBeforeSlide.lgtm', function () {

            for (var j = 0; j < $thumb.length; j++) {
                utils.removeClass($thumb[j], 'active');
            }

            utils.addClass($thumb[_this.core.index], 'active');
        });

        for (var k = 0; k < $thumb.length; k++) {

            /*jshint loopfunc: true */
            (function (index) {

                utils.on($thumb[index], 'click.lg touchend.lg', function () {

                    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 = index;
                            _this.core.slide(_this.core.index, false, true);
                        }
                    }, 50);
                });
            })(k);
        }

        utils.on(_this.core.el, 'onBeforeSlide.lgtm', function () {
            _this.animateThumb(_this.core.index);
        });

        utils.on(window, 'resize.lgthumb orientationchange.lgthumb', function () {
            setTimeout(function () {
                _this.animateThumb(_this.core.index);
                _this.thumbOuterWidth = _this.thumbOuter.offsetWidth;
            }, 200);
        });
    };

    Thumbnail.prototype.setTranslate = function (value) {
        utils.setVendor(this.core.outer.querySelector('.lg-thumb'), 'Transform', 'translate3d(-' + value + 'px, 0px, 0px)');
    };

    Thumbnail.prototype.animateThumb = function (index) {
        var $thumb = this.core.outer.querySelector('.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 (!utils.hasClass($thumb, 'on')) {
                    utils.setVendor(this.core.outer.querySelector('.lg-thumb'), 'TransitionDuration', this.core.s.speed + 'ms');
                }

                if (!this.core.doCss()) {
                    $thumb.style.left = -this.left + 'px';
                }
            } else {
                if (!this.core.doCss()) {
                    $thumb.style.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;

        utils.addClass(_this.thumbOuter, 'lg-grab');

        utils.on(_this.core.outer.querySelector('.lg-thumb'), 'mousedown.lgthumb', 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;
                utils.removeClass(_this.thumbOuter, 'lg-grab');
                utils.addClass(_this.thumbOuter, 'lg-grabbing');
            }
        });

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

                utils.addClass(_this.thumbOuter, '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);
            }
        });

        utils.on(window, 'mouseup.lgthumb', function () {
            if (isMoved) {
                isMoved = false;
                utils.removeClass(_this.thumbOuter, '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;
                utils.removeClass(_this.thumbOuter, 'lg-grabbing');
                utils.addClass(_this.thumbOuter, 'lg-grab');
            }
        });
    };

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

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

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

                utils.addClass(_this.thumbOuter, '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);
            }
        });

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

                if (isMoved) {
                    isMoved = false;
                    utils.removeClass(_this.thumbOuter, '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.toggle = function () {
        var _this = this;
        if (_this.core.s.toggleThumb) {
            utils.addClass(_this.core.outer, 'lg-can-toggle');
            _this.thumbOuter.insertAdjacentHTML('beforeend', '<span class="lg-toggle-thumb lg-icon"></span>');
            utils.on(_this.core.outer.querySelector('.lg-toggle-thumb'), 'click.lg', function () {
                if (utils.hasClass(_this.core.outer, 'lg-thumb-open')) {
                    utils.removeClass(_this.core.outer, 'lg-thumb-open');
                } else {
                    utils.addClass(_this.core.outer, 'lg-thumb-open');
                }
            });
        }
    };

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

    Thumbnail.prototype.destroy = function () {
        if (this.core.s.thumbnail && this.core.items.length > 1) {
            utils.off(window, '.lgthumb');
            this.thumbOuter.parentNode.removeChild(this.thumbOuter);
            utils.removeClass(this.core.outer, 'lg-has-thumb');

            var lgScript = document.getElementsByClassName('lg-script');
            while (lgScript[0]) {
                lgScript[0].parentNode.removeChild(lgScript[0]);
            }
        }
    };

    window.lgModules.thumbnail = Thumbnail;
});

},{}]},{},[1])(1)
});