/**
 * JQ评分效果
 */ 
 function Score(options) { 
    this.config = { 
        selector                  :   '.star',     // 评分容器 
        renderCallback            :   null,        // 渲染页面后回调 
        callback                  :   null         // 点击评分回调                          
    }; 
 
    this.cache = { 
        aMsg : [ 
                "很不满意|差得太离谱，与卖家描述的严重不符，非常不满", 
                "不满意|部分有破损，与卖家描述的不符，不满意", 
                "一般|质量一般，没有卖家描述的那么好", 
                "满意|质量不错，与卖家描述的基本一致，还是挺满意的", 
                "非常满意|质量非常好，与卖家描述的完全一致，非常满意" 
                ], 
        iStar  : 0, 
        iScore : 0 
    }; 
 
    this.init(options); 
 } 
 
 Score.prototype = { 
 
    constructor: Score, 
 
    init: function(options){ 
        this.config = $.extend(this.config,options || {}); 
        var self = this, 
            _config = self.config, 
            _cache = self.cache; 
 
        self._renderHTML(); 
    }, 
    _renderHTML: function(){ 
        var self = this, 
            _config = self.config; 
        var html = '<span class="desc"></span>' +  
                   '<p class="star-p hidden"></p>'; 
        $(_config.selector).each(function(index,item){ 
            $(item).append(html); 
            $(item).wrap($('<div class="parentCls" style="position:relative"></div>')); 
            var parentCls = $(item).closest('.parentCls'); 
            self._bindEnv(parentCls); 
            _config.renderCallback && $.isFunction(_config.renderCallback) && _config.renderCallback(); 
        }); 
 
    }, 
    _bindEnv: function(parentCls){ 
        var self = this, 
            _config = self.config, 
            _cache = self.cache; 
 
        $(_config.selector + ' li',parentCls).each(function(index,item){ 
             
            // 鼠标移上 
            $(item).mouseover(function(e){ 
                var offsetLeft = $('ul',parentCls)[0].offsetLeft; 
                ismax(index + 1); 
                 
                $('p',parentCls).hasClass('hidden') && $('p',parentCls).removeClass('hidden'); 
                $('p',parentCls).css({'left':index*$(this).width() + 12 + 'px'}); 
                 
 
                var html = '<em>' +  
                              '<b>'+index+'</b>分 '+_cache.aMsg[index].split('|')[0]+'' +  
                           '</em>' + _cache.aMsg[index].split('|')[1]; 
                $('p',parentCls).html(html); 
            }); 
 
            // 鼠标移出 
            $(item).mouseout(function(){ 
                ismax(); 
                !$('p',parentCls).hasClass('hidden') && $('p',parentCls).addClass('hidden'); 
            }); 
             
            // 鼠标点击 
            $(item).click(function(e){ 
                var index = $(_config.selector + ' li',parentCls).index($(this)); 
                _cache.iStar = index + 1; 
                                 
                !$('p',parentCls).hasClass('hidden') && $('p',parentCls).addClass('hidden'); 
                var html = '<strong>' + 
                                index + 
                           '分</strong>' +_cache.aMsg[index].split('|')[1]; 
 
                $('.desc',parentCls).html(html); 
                _config.callback && $.isFunction(_config.callback) && _config.callback({starAmount:_cache.iStar}); 
            }); 
             
        }); 
 
        function ismax(iArg) { 
            _cache.iScore = iArg || _cache.iStar; 
            var lis = $(_config.selector + ' li',parentCls); 
             
            for(var i = 0; i < lis.length; i++) { 
                lis[i].className = i < _cache.iScore ? "on" : ""; 
            } 
        } 
    } 
 };