/*! modernizr 3.0.0 (Custom Build) | MIT *
 * http://modernizr.com/download/?-csstransforms-csstransforms3d !*/
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/**
 *
 * http://www.anotherhome.net
 * Copyright 2015, DIYgod
 * Free to use under the MIT license.
 *
 */
(function ($) {

    $.carrousel = function (options, element) {
        this.$el = $(element);
        this._init(options);
    };

    $.carrousel.defaults = {
        current: 0,	// index of current item
        autoplay: true,// slideshow on / off
        interval: 3000,  // time between transitions
        
    };

    $.carrousel.prototype = {
        // 鍒濆鍖
        _init: function (options) {
            this.options = $.extend(true, {}, $.carrousel.defaults, options);

            this.support3d = false//Modernizr.csstransforms3d;
            this.support2d = Modernizr.csstransforms;

            this.$wrapper = this.$el.find('.dg-wrapper');
            this.$items = this.$wrapper.children();
            this.itemsCount = this.$items.length;
            this.$nav = this.$el.find('nav');
            this.$navPrev = this.$nav.find('.dg-prev');
            this.$navNext = this.$nav.find('.dg-next');
            this.button = $('#lightButton li');
            this.box = $('.banner1');
            this.imgWidth = $('.banner1 .dg-wrapper img').width();

            this.indexB = 0;
            this.CSSX = 0;
            this.CSSXout = 0;

            this.button[0].classList.add('light');

            this.current = this.options.current;
            this.isAnim = false;
            this.$items.css({
                'opacity': 1
            });
            this._updateWidth();
            this._layout();
            // load the events
            this._loadEvents();
            // slideshow
            if (this.options.autoplay) {
                this._startSlideshow();
            }

            var _self = this;
            for (var i = 0, len = this.button.length; i < len; i++) {     // 鐐瑰嚮灏忓渾鐐
                this.button[i].addEventListener('click', function() {
                    var toIndex = parseInt(this.getAttribute('index'));
                    var toMove = toIndex - _self.indexB;
                    switch (toMove) {
                        case 0:
                            break;
                        case 1:
                            _self._navigate('next', 'dg-transition');
                            break;
                        case -1:
                            _self._navigate('prev', 'dg-transition');
                            break;
                        default:
                            _self._stopSlideshow();
                            var bTime = setInterval(function () {
                                if (!_self.isAnim) {
                                    if (!toMove) {
                                        clearInterval(bTime);
                                        if (_self.options.autoplay) {
                                            _self._startSlideshow();
                                        }
                                    }
                                    else if (toMove > 0) {
                                        _self._navigate('next', 'dg-transition-fast');
                                        toMove--;
                                    }
                                    else if (toMove < 0) {
                                        _self._navigate('prev', 'dg-transition-fast');
                                        toMove++;
                                    }
                                }
                            }, 0);
                            break;
                    }
                });
            }
        },

        // 鑷€傚簲瀹藉害
        _updateWidth: function () {
            if (this.support3d) {
                if (document.body.clientWidth < 1300) {
                    this.CSSX = ($(this.box).width() - 10 - this.imgWidth * 0.7*3.5) / 2;
                    this.CSSXout = 0;
                }
                else if (document.body.clientWidth >= 1300) {
                    this.CSSX = ($(this.box).width() * 1.2 - 10 - this.imgWidth * 0.5*3.5) / 2 * 0.5;
                    this.CSSXout = ($(this.box).width() * 1.2 - 10 - this.imgWidth * 0.5*3.5) / 2;
                }
            }
            else if (this.support2d) {
                if (document.body.clientWidth < 1464) {
                    this.CSSX = ($(this.box).width() - 10 - this.imgWidth * 0.7*3.5) / 2;
                    this.CSSXout = 0;
                }
                else if (document.body.clientWidth >= 1464) {
                    this.CSSX = (($(this.box).width() - 10 - this.imgWidth * 0.4*3.5) / 2) * 0.7;
                    this.CSSXout = ($(this.box).width() - 10 - this.imgWidth * 0.4*3.5) / 2;
                }
            }
        },

        // 鏄剧ず灏忓渾鐐
        _showButton: function () {
            var _self = this;
            for (var i = 0, len = _self.button.length; i < len; i++) {
                if (_self.button[i].classList.contains('light')) {
                    _self.button[i].classList.remove('light');
                    break;
                }
            }
            _self.button[_self.indexB].classList.add('light');
        },

        // 鐢ㄦ潵缁戝畾鐐瑰嚮浜嬩欢
        _click: function (element, move) {
            var _self = this;
            element.off('click.gallery');
            element.on('click.gallery', function () {
                if (!this.isAnim) {
                    _self._navigate(move);
                    if (_self.options.autoplay) {
                        _self._startSlideshow();
                    }
                }
            });
        },

        // 鍒濆鏍峰紡
        _layout: function () {
            this._setItems();

            this.$leftItm.css(this._getCoordinates('left'));
            this.$rightItm.css(this._getCoordinates('right'));
            this.$currentItm.css(this._getCoordinates('center')).addClass('dg-center');

            this._click(this.$leftItm, 'prev');
            this._click(this.$prevItm, 'prev');

            this.$currentItm.off('click.carrousel');

            this._click(this.$rightItm, 'next');
            this._click(this.$nextItm, 'next');

            this.$nextItm.css(this._getCoordinates('outright'));
            this.$prevItm.css(this._getCoordinates('outleft'));

            //this.$currentItm[0].href = this.$currentItm[0].getAttribute('link');
        },

        // 鏇存柊鍥剧墖浣嶇疆
        _setItems: function () {

            this.$items.removeClass('dg-center');

            this.$currentItm = this.$items.eq(this.current);
            this.$leftItm = ( this.current === 0 ) ? this.$items.eq(this.itemsCount - 1) : this.$items.eq(this.current - 1);
            this.$rightItm = ( this.current === this.itemsCount - 1 ) ? this.$items.eq(0) : this.$items.eq(this.current + 1);
            this.$nextItm = ( this.$rightItm.index() === this.itemsCount - 1 ) ? this.$items.eq(0) : this.$rightItm.next();
            this.$prevItm = ( this.$leftItm.index() === 0 ) ? this.$items.eq(this.itemsCount - 1) : this.$leftItm.prev();
        },

        _loadEvents: function () {
            var _self = this;
            this.$navPrev.on('click.carrousel', function () {
                _self._navigate('prev');
                return false;
            });

            this.$navNext.on('click.carrousel', function () {
                _self._navigate('next');
                return false;
            });

            this.$wrapper.on('webkitTransitionEnd.carrousel transitionend.carrousel OTransitionEnd.carrousel', function () {
                _self.$currentItm.addClass('dg-center');
                _self.$items.removeClass('dg-transition');
                _self.$items.removeClass('dg-transition-fast');
                _self.isAnim = false;

                // 澶勭悊涓棿鍏冪礌鐨刪ref
                //_self.$currentItm[0].href = _self.$currentItm[0].getAttribute('link');
                //_self.$leftItm[0].href = '#';
                //_self.$rightItm[0].href = '#';

                // 澶勭悊宸﹀彸鍏冪礌鐨勭偣鍑讳簨浠
                _self._click(_self.$leftItm, 'prev');
                _self._click(_self.$prevItm, 'prev');

                _self.$currentItm.off('click.gallery');

                _self._click(_self.$rightItm, 'next');
                _self._click(_self.$nextItm, 'next');
            });
        },

        // 瀹氫箟鏍峰紡
        _getCoordinates: function (position) {
            if (this.support3d) {
                switch (position) {
                    case 'outleft':
                        return {
                            '-webkit-transform': 'translateX(-' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            '-moz-transform': 'translateX(-' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            '-o-transform': 'translateX(-' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            '-ms-transform': 'translateX(-' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            'transform': 'translateX(-' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            'opacity': 1,
                            'z-index': 2
                        };
                        break;
                    case 'outright':
                        return {
                            '-webkit-transform': 'translateX(' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            '-moz-transform': 'translateX(' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            '-o-transform': 'translateX(' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            '-ms-transform': 'translateX(' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            'transform': 'translateX(' + this.CSSXout + 'px) translateZ(-560px) rotateY(0deg)',
                            'opacity': 1,
                            'z-index': 2
                        };
                        break;
                    case 'left':
                        return {
                            '-webkit-transform': 'translateX(-' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            '-moz-transform': 'translateX(-' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            '-o-transform': 'translateX(-' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            '-ms-transform': 'translateX(-' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            'transform': 'translateX(-' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            'opacity': 1,
                            'z-index': 3,
                            'visibility': 'visible'
                        };
                        break;
                    case 'right':
                        return {
                            '-webkit-transform': 'translateX(' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            '-moz-transform': 'translateX(' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            '-o-transform': 'translateX(' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            '-ms-transform': 'translateX(' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            'transform': 'translateX(' + this.CSSX + 'px) translateZ(-300px) rotateY(0deg)',
                            'opacity': 1,
                            'z-index': 3,
                            'visibility': 'visible'
                        };
                        break;
                    case 'center':
                        return {
                            '-webkit-transform': 'translateX(0px) translateZ(0px) rotateY(0deg)',
                            '-moz-transform': 'translateX(0px) translateZ(0px) rotateY(0deg)',
                            '-o-transform': 'translateX(0px) translateZ(0px) rotateY(0deg)',
                            '-ms-transform': 'translateX(0px) translateZ(0px) rotateY(0deg)',
                            'transform': 'translateX(0px) translateZ(0px) rotateY(0deg)',
                            'opacity': 1,
                            'z-index': 4,
                            'visibility': 'visible'
                        };
                        break;
                    case 'hide':
                        return {
                            '-webkit-transform': 'translate(0px) scale(0.7)',
                            'opacity': 1,
                            'visibility': 'visible',
                            'z-index': 1
                        };
                        break;
                }
            }
            else if (this.support2d) {
                switch (position) {
                    case 'outleft':
                        return {
                            '-webkit-transform': 'translate(-' + this.CSSXout + 'px) scale(0.8)',
                            '-moz-transform': 'translate(-' + this.CSSXout + 'px) scale(0.8)',
                            '-o-transform': 'translate(-' + this.CSSXout + 'px) scale(0.8)',
                            '-ms-transform': 'translate(-' + this.CSSXout + 'px) scale(0.8)',
                            'transform': 'translate(-' + this.CSSXout + 'px) scale(0.8)',
                            'opacity': 1,
                            'z-index': 2
                        };
                        break;
                    case 'outright':
                        return {
                            '-webkit-transform': 'translate(' + this.CSSXout + 'px) scale(0.8)',
                            '-moz-transform': 'translate(' + this.CSSXout + 'px) scale(0.8)',
                            '-o-transform': 'translate(' + this.CSSXout + 'px) scale(0.8)',
                            '-ms-transform': 'translate(' + this.CSSXout + 'px) scale(0.8)',
                            'transform': 'translate(' + this.CSSXout + 'px) scale(0.8)',
                            'opacity': 1,
                            'z-index': 2
                        };
                        break;
                    case 'left':
                        return {
                            '-webkit-transform': 'translate(-' + this.CSSX + 'px) scale(0.9)',
                            '-moz-transform': 'translate(-' + this.CSSX + 'px) scale(0.9)',
                            '-o-transform': 'translate(-' + this.CSSX + 'px) scale(0.9)',
                            '-ms-transform': 'translate(-' + this.CSSX + 'px) scale(0.9)',
                            'transform': 'translate(-' + this.CSSX + 'px) scale(0.9)',
                            'opacity': 1,
                            'visibility': 'visible',
                            'z-index': 3
                        };
                        break;
                    case 'right':
                        return {
                            '-webkit-transform': 'translate(' + this.CSSX + 'px) scale(0.9)',
                            '-moz-transform': 'translate(' + this.CSSX + 'px) scale(0.9)',
                            '-o-transform': 'translate(' + this.CSSX + 'px) scale(0.9)',
                            '-ms-transform': 'translate(' + this.CSSX + 'px) scale(0.9)',
                            'transform': 'translate(' + this.CSSX + 'px) scale(0.9)',
                            'opacity': 1,
                            'visibility': 'visible',
                            'z-index': 3
                        };
                        break;
                    case 'center':
                        return {
                            '-webkit-transform': 'translate(0px) scale(1)',
                            '-moz-transform': 'translate(0px) scale(1)',
                            '-o-transform': 'translate(0px) scale(1)',
                            '-ms-transform': 'translate(0px) scale(1)',
                            'transform': 'translate(0px) scale(1)',
                            'opacity': 1,
                            'visibility': 'visible',
                            'z-index': 4
                        };
                    case 'hide':
                        return {
                            '-webkit-transform': 'translate(0px) scale(0.7)',
                            '-moz-transform': 'translate(0px) scale(0.7)',
                            '-o-transform': 'translate(0px) scale(0.7)',
                            '-ms-transform': 'translate(0px) scale(0.7)',
                            'transform': 'translate(0px) scale(0.7)',
                            'opacity': 1,
                            'visibility': 'visible',
                            'z-index': 1
                        }
                        break;
                }
            }
        },

        // 鍒囨崲
        _navigate: function (dir, speedClass) {
            speedClass = speedClass || 'dg-transition';
            if (!this.isAnim) {
                this._updateWidth();

                this.isAnim = true;
                var _self = this;

                switch (dir) {
                    case 'next' :
                        this.indexB++;
                        if (this.indexB === this.itemsCount) {
                            this.indexB = 0;
                        }
                        this._showButton();
                        this.current = this.$rightItm.index();
                        // current item moves left
                        this.$currentItm.addClass(speedClass).css(this._getCoordinates('left'));

                        // right item moves to the center
                        this.$rightItm.addClass(speedClass).css(this._getCoordinates('center'));

                        // left item moves out
                        this.$leftItm.addClass(speedClass).css(this._getCoordinates('outleft'));

                        this.$nextItm.addClass(speedClass).css(this._getCoordinates('right'));

                        if (this.itemsCount > 5) {
                            this.$prevItm.addClass(speedClass).css(this._getCoordinates('hide'));
                            this.$prevItm.off('click.carrousel');
                        }

                        var nextEle = ( this.$nextItm.index() === this.itemsCount - 1 ) ? this.$items.eq(0) : this.$nextItm.next();
                        $(nextEle).addClass(speedClass).css(this._getCoordinates('outright'));
                        $(nextEle).off('click.carrousel');

                        break;

                    case 'prev' :
                        this.indexB--;
                        if (this.indexB === -1) {
                            this.indexB = this.itemsCount - 1;
                        }
                        this._showButton();
                        this.current = this.$leftItm.index();
                        // current item moves right
                        this.$currentItm.addClass(speedClass).css(this._getCoordinates('right'));

                        // left item moves to the center
                        this.$leftItm.addClass(speedClass).css(this._getCoordinates('center'));

                        // right item moves out
                        this.$rightItm.addClass(speedClass).css(this._getCoordinates('outright'));

                        this.$prevItm.addClass(speedClass).css(this._getCoordinates('left'));

                        if (this.itemsCount > 5) {
                            this.$nextItm.addClass(speedClass).css(this._getCoordinates('hide'));
                            this.$nextItm.off('click.carrousel');
                        }

                        var prevEle = ( this.$prevItm.index() === 0 ) ? this.$items.eq(this.itemsCount - 1) : this.$prevItm.prev();
                        $(prevEle).addClass(speedClass).css(this._getCoordinates('outleft'));
                        $(prevEle).off('click.carrousel');

                        break;
                }
                ;
                this._setItems();
            }
        },

        // 鑷姩鍒囨崲
        _startSlideshow: function () {
            if (this.slideshow) {
                clearInterval(this.slideshow);
            }
            var _self = this;
            this.slideshow = setInterval(function () {
                if ($('.dg-center')[0] && !_self.isAnim) {
                    _self._navigate('next');
                }
            }, this.options.interval);
        },

        _stopSlideshow: function () {
            clearTimeout(this.slideshow);
        }
    };

    $.fn.carrousel = function (options) {
        if (typeof options === 'object') {
            this.each(function () {
                var instance = $.data(this, 'carrousel');
                if (!instance) {
                    $.data(this, 'carrousel', new $.carrousel(options, this));
                }
            });
        }
        else if (typeof options === 'string') {
            this.each(function () {
                var instance = $.data(this, 'carrousel');
                if (instance) {
                    switch (options) {
                        case 'play':
                            instance._startSlideshow();
                            instance.options.autoplay = true;
                            break;
                        case 'stop':
                            instance._stopSlideshow();
                            instance.options.autoplay = false;
                            break;
                        case 'next':
                            instance._navigate('next');
                            break;
                        case 'prev':
                            instance._navigate('prev');
                            break;
                    }
                }
            });
        }
        else if (typeof options === 'number') {
            this.each(function () {
                var instance = $.data(this, 'carrousel');
                instance.button[options].click();
            });
        }
        return this;
    };

})(jQuery);