/**

 @Name：layui.table 表格操作
 @Author：贤心
 @License：MIT
    
 */
 
layui.define(['laytpl', 'laypage', 'layer', 'form'], function(exports){
  "use strict";
  
  var $ = layui.$
  ,laytpl = layui.laytpl
  ,laypage = layui.laypage
  ,layer = layui.layer
  ,form = layui.form
  ,hint = layui.hint()
  ,device = layui.device()

  //外部接口
  ,table = {
    config: {
      checkName: 'LAY_CHECKED' //是否选中状态的字段名
      ,indexName: 'LAY_TABLE_INDEX' //下标索引名
    } //全局配置项
    ,cache: {} //数据缓存
    ,index: layui.table ? (layui.table.index + 10000) : 0
    
    //设置全局项
    ,set: function(options){
      var that = this;
      that.config = $.extend({}, that.config, options);
      return that;
    }
    
    //事件监听
    ,on: function(events, callback){
      return layui.onevent.call(this, MOD_NAME, events, callback);
    }
  }
  
  //操作当前实例
  ,thisTable = function(){
    var that = this
    ,options = that.config
    ,id = options.id;
    
    id && (thisTable.config[id] = options);
    
    return {
      reload: function(options){
        that.reload.call(that, options);
      }
      ,config: options
    }
  }
  
  //字符常量
  ,MOD_NAME = 'table', ELEM = '.layui-table', THIS = 'layui-this', SHOW = 'layui-show', HIDE = 'layui-hide', DISABLED = 'layui-disabled', NONE = 'layui-none'
  
  ,ELEM_VIEW = 'layui-table-view', ELEM_HEADER = '.layui-table-header', ELEM_BODY = '.layui-table-body', ELEM_MAIN = '.layui-table-main', ELEM_FIXED = '.layui-table-fixed', ELEM_FIXL = '.layui-table-fixed-l', ELEM_FIXR = '.layui-table-fixed-r', ELEM_TOOL = '.layui-table-tool', ELEM_PAGE = '.layui-table-page', ELEM_SORT = '.layui-table-sort', ELEM_EDIT = 'layui-table-edit', ELEM_HOVER = 'layui-table-hover'
  
  //thead区域模板
  ,TPL_HEADER = function(options){
    var rowCols = '{{#if(item2.colspan){}} colspan="{{item2.colspan}}"{{#} if(item2.rowspan){}} rowspan="{{item2.rowspan}}"{{#}}}';
    
    options = options || {};
    return ['<table cellspacing="0" cellpadding="0" border="0" class="layui-table" '
      ,'{{# if(d.data.skin){ }}lay-skin="{{d.data.skin}}"{{# } }} {{# if(d.data.size){ }}lay-size="{{d.data.size}}"{{# } }} {{# if(d.data.even){ }}lay-even{{# } }}>'
      ,'<thead>'
      ,'{{# layui.each(d.data.cols, function(i1, item1){ }}'
        ,'<tr>'
        ,'{{# layui.each(item1, function(i2, item2){ }}'
          ,'{{# if(item2.fixed && item2.fixed !== "right"){ left = true; } }}'
          ,'{{# if(item2.fixed === "right"){ right = true; } }}'
          ,function(){
            if(options.fixed && options.fixed !== 'right'){
              return '{{# if(item2.fixed && item2.fixed !== "right"){ }}';
            }
            if(options.fixed === 'right'){
              return '{{# if(item2.fixed === "right"){ }}';
            }
            return '';
          }()
          ,'<th data-field="{{ item2.field||i2 }}" {{# if(item2.minWidth){ }}data-minwidth="{{item2.minWidth}}"{{# } }} '+ rowCols +' {{# if(item2.unresize){ }}data-unresize="true"{{# } }}>'
            ,'<div class="layui-table-cell laytable-cell-'
              ,'{{# if(item2.colspan > 1){ }}'
                ,'group'
              ,'{{# } else { }}'
                ,'{{d.index}}-{{item2.field || i2}}'
                ,'{{# if(item2.type !== "normal"){ }}'
                  ,' laytable-cell-{{ item2.type }}'
                ,'{{# } }}'
              ,'{{# } }}'
            ,'" {{#if(item2.align){}}align="{{item2.align}}"{{#}}}>'
              ,'{{# if(item2.type === "checkbox"){ }}' //复选框
                ,'<input type="checkbox" name="layTableCheckbox" lay-skin="primary" lay-filter="layTableAllChoose" {{# if(item2[d.data.checkName]){ }}checked{{# }; }}>'
              ,'{{# } else { }}'
                ,'<span>{{item2.title||""}}</span>'
                ,'{{# if(!(item2.colspan > 1) && item2.sort){ }}'
                  ,'<span class="layui-table-sort layui-inline"><i class="layui-edge layui-table-sort-asc"></i><i class="layui-edge layui-table-sort-desc"></i></span>'
                ,'{{# } }}'
              ,'{{# } }}'
            ,'</div>'
          ,'</th>'
          ,(options.fixed ? '{{# }; }}' : '')
        ,'{{# }); }}'
        ,'</tr>'
      ,'{{# }); }}'
      ,'</thead>'
    ,'</table>'].join('');
  }
  
  //tbody区域模板
  ,TPL_BODY = ['<table cellspacing="0" cellpadding="0" border="0" class="layui-table" '
    ,'{{# if(d.data.skin){ }}lay-skin="{{d.data.skin}}"{{# } }} {{# if(d.data.size){ }}lay-size="{{d.data.size}}"{{# } }} {{# if(d.data.even){ }}lay-even{{# } }}>'
    ,'<tbody></tbody>'
  ,'</table>'].join('')
  
  //主模板
  ,TPL_MAIN = ['<div class="layui-form layui-border-box {{d.VIEW_CLASS}}" lay-filter="LAY-table-{{d.index}}" style="{{# if(d.data.width){ }}width:{{d.data.width}}px;{{# } }} {{# if(d.data.height){ }}height:{{d.data.height}}px;{{# } }}">'
    
    ,'{{# if(d.data.toolbar){ }}'
    ,'<div class="layui-table-tool"></div>'
    ,'{{# } }}'
    
    ,'<div class="layui-table-box">'
      ,'{{# var left, right; }}'
      ,'<div class="layui-table-header">'
        ,TPL_HEADER()
      ,'</div>'
      ,'<div class="layui-table-body layui-table-main">'
        ,TPL_BODY
      ,'</div>'
      
      ,'{{# if(left){ }}'
      ,'<div class="layui-table-fixed layui-table-fixed-l">'
        ,'<div class="layui-table-header">'
          ,TPL_HEADER({fixed: true}) 
        ,'</div>'
        ,'<div class="layui-table-body">'
          ,TPL_BODY
        ,'</div>'      
      ,'</div>'
      ,'{{# }; }}'
      
      ,'{{# if(right){ }}'
      ,'<div class="layui-table-fixed layui-table-fixed-r">'
        ,'<div class="layui-table-header">'
          ,TPL_HEADER({fixed: 'right'})
          ,'<div class="layui-table-mend"></div>'
        ,'</div>'
        ,'<div class="layui-table-body">'
          ,TPL_BODY
        ,'</div>'
      ,'</div>'
      ,'{{# }; }}'
    ,'</div>'
    
    ,'{{# if(d.data.page){ }}'
    ,'<div class="layui-table-page">'
      ,'<div id="layui-table-page{{d.index}}"></div>'
    ,'</div>'
    ,'{{# } }}'
    
    ,'<style>'
    ,'{{# layui.each(d.data.cols, function(i1, item1){'
      ,'layui.each(item1, function(i2, item2){ }}'
        ,'.laytable-cell-{{d.index}}-{{item2.field||i2}}{ '
        ,'{{# if(item2.width){ }}'
          ,'width: {{item2.width}}px;'
        ,'{{# } }}'
        ,' }'
      ,'{{# });'
    ,'}); }}'
    ,'</style>'
  ,'</div>'].join('')
  
  ,_WIN = $(window)
  ,_DOC = $(document)
  
  //构造器
  ,Class = function(options){
    var that = this;
    that.index = ++table.index;
    that.config = $.extend({}, that.config, table.config, options);
    that.render();
  };
  
  //默认配置
  Class.prototype.config = {
    limit: 10 //每页显示的数量
    ,loading: true //请求数据时，是否显示loading
    ,cellMinWidth: 60 //所有单元格默认最小宽度
    ,text: {
      none: '无数据'
    }
  };

  //表格渲染
  Class.prototype.render = function(){
    var that = this
    ,options = that.config;

    options.elem = $(options.elem);
    options.where = options.where || {};
    options.id = options.id || options.elem.attr('id');

    //请求参数的自定义格式
    options.request = $.extend({
      pageName: 'page'
      ,limitName: 'limit'
    }, options.request)
    
    //响应数据的自定义格式
    options.response = $.extend({
      statusName: 'code'
      ,statusCode: 0
      ,msgName: 'msg'
      ,dataName: 'data'
      ,countName: 'count'
    }, options.response);
    
    //如果 page 传入 laypage 对象
    if(typeof options.page === 'object'){
      options.limit = options.page.limit || options.limit;
      options.limits = options.page.limits || options.limits;
      that.page = options.page.curr = options.page.curr || 1;
      delete options.page.elem;
      delete options.page.jump;
    }
    
    if(!options.elem[0]) return that;
    
    that.setArea(); //动态分配列宽高
    
    //开始插入替代元素
    var othis = options.elem
    ,hasRender = othis.next('.' + ELEM_VIEW)
    
    //主容器
    ,reElem = that.elem = $(laytpl(TPL_MAIN).render({
      VIEW_CLASS: ELEM_VIEW
      ,data: options
      ,index: that.index //索引
    }));
    
    options.index = that.index;
    
    //生成替代元素
    hasRender[0] && hasRender.remove(); //如果已经渲染，则Rerender
    othis.after(reElem);
    
    //各级容器
    that.layHeader = reElem.find(ELEM_HEADER);
    that.layMain = reElem.find(ELEM_MAIN);
    that.layBody = reElem.find(ELEM_BODY);
    that.layFixed = reElem.find(ELEM_FIXED);
    that.layFixLeft = reElem.find(ELEM_FIXL);
    that.layFixRight = reElem.find(ELEM_FIXR);
    that.layTool = reElem.find(ELEM_TOOL);
    that.layPage = reElem.find(ELEM_PAGE);
    
    that.layTool.html(
      laytpl($(options.toolbar).html()||'').render(options)
    );
    
    if(options.height) that.fullSize(); //设置body区域高度
    
    //如果多级表头，则填补表头高度
    if(options.cols.length > 1){
      var th = that.layFixed.find(ELEM_HEADER).find('th');
      th.height(that.layHeader.height() - 1 - parseFloat(th.css('padding-top')) - parseFloat(th.css('padding-bottom')));
    }
    
    //请求数据
    that.pullData(that.page);
    that.events();
  };
  
  //根据列类型，定制化参数
  Class.prototype.initOpts = function(item){
    var that = this,
    options = that.config
    ,initWidth = {
      checkbox: 48
      ,space: 15
      ,numbers: 40
    };
    
    //让 type 参数兼容旧版本
    if(item.checkbox) item.type = "checkbox";
    if(item.space) item.type = "space";
    if(!item.type) item.type = "normal";
    
    if(item.type !== "normal"){
      item.unresize = true;
      item.width = item.width || initWidth[item.type];
    }
  };
  
  //动态分配列宽高
  Class.prototype.setArea = function(){
    var that = this,
    options = that.config
    ,colNums = 0 //列个数
    ,autoColNums = 0 //自动列宽的列个数
    ,autoWidth = 0 //自动列分配的宽度
    ,countWidth = 0 //所有列总宽度和
    ,cntrWidth = options.width || function(){ //获取容器宽度
      //如果父元素宽度为0（一般为隐藏元素），则继续查找上层元素，直到找到真实宽度为止
      var getWidth = function(parent){
        var width, isNone;
        parent = parent || options.elem.parent()
        width = parent.width();
        try {
          isNone = parent.css('display') === 'none';
        } catch(e){}
        if(parent[0] && (!width || isNone)) return getWidth(parent.parent());
        return width;
      };
      return getWidth();
    }();
    
    //统计列个数
    that.eachCols(function(){
      colNums++;
    });
    
    //减去边框差
    cntrWidth = cntrWidth - function(){
      return (options.skin === 'line' || options.skin === 'nob') ? 2 : colNums + 1;
    }();

    //遍历所有列
    layui.each(options.cols, function(i1, item1){
      layui.each(item1, function(i2, item2){
        var width;

        if(!item2){
          item1.splice(i2, 1);
          return;
        }
        
        that.initOpts(item2);
        width = item2.width || 0;
        
        if(item2.colspan > 1) return;

        if(/\d+%$/.test(width)){
          item2.width = width = Math.floor((parseFloat(width) / 100) * cntrWidth);
        } else if(!width){ //列宽未填写
          item2.width = width = 0;
          autoColNums++;
        }
        
        countWidth = countWidth + width;
      });
    });
    
    that.autoColNums = autoColNums; //记录自动列数
    
    //如果未填充满，则将剩余宽度平分。否则，给未设定宽度的列赋值一个默认宽
    (cntrWidth > countWidth && autoColNums) && (
      autoWidth = (cntrWidth - countWidth) / autoColNums
    );
    
    layui.each(options.cols, function(i1, item1){
      layui.each(item1, function(i2, item2){
        var minWidth = item2.minWidth || options.cellMinWidth;
        if(item2.colspan > 1) return;
        if(item2.width === 0){
          item2.width = Math.floor(autoWidth >= minWidth ? autoWidth : minWidth); //不能低于设定的最小宽度
        }
      });
    });
    
    //高度铺满：full-差距值
    if(options.height && /^full-\d+$/.test(options.height)){
      that.fullHeightGap = options.height.split('-')[1];
      options.height = _WIN.height() - that.fullHeightGap;
    }
  };
  
  //表格重载
  Class.prototype.reload = function(options){
    var that = this;
    if(that.config.data && that.config.data.constructor === Array) delete that.config.data;
    that.config = $.extend({}, that.config, options);
    that.render();
  };
  
  //页码
  Class.prototype.page = 1;
  
  //获得数据
  Class.prototype.pullData = function(curr, loadIndex){
    var that = this
    ,options = that.config
    ,request = options.request
    ,response = options.response
    ,sort = function(){
      if(typeof options.initSort === 'object'){
        that.sort(options.initSort.field, options.initSort.type);
      }
    };
    
    that.startTime = new Date().getTime(); //渲染开始时间
    
    if(options.url){ //Ajax请求
      var params = {};
      params[request.pageName] = curr;
      params[request.limitName] = options.limit;
      
      $.ajax({
        type: options.method || 'get'
        ,url: options.url
        ,data: $.extend(params, options.where)
        ,dataType: 'json'
        ,success: function(res){
          if(res[response.statusName] != response.statusCode){
            that.renderForm();
            that.layMain.html('<div class="'+ NONE +'">'+ (res[response.msgName] || '返回的数据状态异常') +'</div>');
          } else {
            that.renderData(res, curr, res[response.countName]), sort();
            options.time = (new Date().getTime() - that.startTime) + ' ms'; //耗时（接口请求+视图渲染）
          }
          loadIndex && layer.close(loadIndex);
          typeof options.done === 'function' && options.done(res, curr, res[response.countName]);
        }
        ,error: function(e, m){
          that.layMain.html('<div class="'+ NONE +'">数据接口请求异常</div>');
          that.renderForm();
          loadIndex && layer.close(loadIndex);
        }
      });
    } else if(options.data && options.data.constructor === Array){ //已知数据
      var res = {}
      ,startLimit = curr*options.limit - options.limit
      
      res[response.dataName] = options.data.concat().splice(startLimit, options.limit);
      res[response.countName] = options.data.length;

      that.renderData(res, curr, options.data.length), sort();
      typeof options.done === 'function' && options.done(res, curr, res[response.countName]);
    }
  };
  
  //遍历表头
  Class.prototype.eachCols = function(callback){
    var cols = $.extend(true, [], this.config.cols)
    ,arrs = [], index = 0;

    //重新整理表头结构
    layui.each(cols, function(i1, item1){
      layui.each(item1, function(i2, item2){
        //如果是组合列，则捕获对应的子列
        if(item2.colspan > 1){
          var childIndex = 0;
          index++
          item2.CHILD_COLS = [];
          layui.each(cols[i1 + 1], function(i22, item22){
            if(item22.PARENT_COL || childIndex == item2.colspan) return;
            item22.PARENT_COL = index;
            item2.CHILD_COLS.push(item22);
            childIndex = childIndex + (item22.colspan > 1 ? item22.colspan : 1);
          });
        }
        if(item2.PARENT_COL) return; //如果是子列，则不进行追加，因为已经存储在父列中
        arrs.push(item2)
      });
    });

    //重新遍历列，如果有子列，则进入递归
    var eachArrs = function(obj){
      layui.each(obj || arrs, function(i, item){
        if(item.CHILD_COLS) return eachArrs(item.CHILD_COLS);
        callback(i, item);
      });
    };
    
    eachArrs();
  };
  
  //数据渲染
  Class.prototype.renderData = function(res, curr, count, sort){
    var that = this
    ,options = that.config
    ,data = res[options.response.dataName] || []
    ,trs = []
    ,trs_fixed = []
    ,trs_fixed_r = []
    
    //渲染视图
    ,render = function(){ //后续性能提升的重点
      if(!sort && that.sortKey){
        return that.sort(that.sortKey.field, that.sortKey.sort, true);
      }
      layui.each(data, function(i1, item1){
        var tds = [], tds_fixed = [], tds_fixed_r = []
        ,numbers = i1 + options.limit*(curr - 1) + 1; //序号
        
        if(item1.length === 0) return;
        if(!sort){
          item1[table.config.indexName] = i1;
        }
        
        that.eachCols(function(i3, item3){
          var field = item3.field || i3, content = item1[field]
          ,cell = that.getColElem(that.layHeader, field);
          
          if(content === undefined || content === null) content = '';
          if(item3.colspan > 1) return;
          
          //td内容
          var td = ['<td data-field="'+ field +'" '+ function(){
            var attr = [];
            if(item3.edit) attr.push('data-edit="'+ item3.edit +'"'); //是否允许单元格编辑
            if(item3.align) attr.push('align="'+ item3.align +'"'); //对齐方式
            if(item3.templet) attr.push('data-content="'+ content +'"'); //自定义模板
            if(item3.toolbar) attr.push('data-off="true"'); //自定义模板
            if(item3.event) attr.push('lay-event="'+ item3.event +'"'); //自定义事件
            if(item3.style) attr.push('style="'+ item3.style +'"'); //自定义样式
            if(item3.minWidth) attr.push('data-minwidth="'+ item3.minWidth +'"'); //单元格最小宽度
            return attr.join(' ');
          }() +'>'
            ,'<div class="layui-table-cell laytable-cell-'+ function(){ //返回对应的CSS类标识
              var str = (options.index + '-' + field);
              return item3.type === 'normal' ? str 
              : (str + ' laytable-cell-' + item3.type);
            }() +'">' + function(){
              var tplData = $.extend(true, {
                LAY_INDEX: numbers
              }, item1);
              
              //渲染复选框列视图
              if(item3.type === 'checkbox'){
                return '<input type="checkbox" name="layTableCheckbox" lay-skin="primary" '+ function(){
                  var checkName = table.config.checkName;
                  //如果是全选
                  if(item3[checkName]){
                    item1[checkName] = item3[checkName];
                    return item3[checkName] ? 'checked' : '';
                  }
                  return tplData[checkName] ? 'checked' : '';
                }() +'>';
              } else if(item3.type === 'numbers'){ //渲染序号
                return numbers;
              }
              
              //解析工具列模板
              if(item3.toolbar){
                return laytpl($(item3.toolbar).html()||'').render(tplData);
              }
              return item3.templet ? function(){
                return typeof item3.templet === 'function' 
                  ? item3.templet(tplData)
                : laytpl($(item3.templet).html() || String(content)).render(tplData) 
              }() : content;
            }()
          ,'</div></td>'].join('');
          
          tds.push(td);
          if(item3.fixed && item3.fixed !== 'right') tds_fixed.push(td);
          if(item3.fixed === 'right') tds_fixed_r.push(td);
        });
        
        trs.push('<tr data-index="'+ i1 +'">'+ tds.join('') + '</tr>');
        trs_fixed.push('<tr data-index="'+ i1 +'">'+ tds_fixed.join('') + '</tr>');
        trs_fixed_r.push('<tr data-index="'+ i1 +'">'+ tds_fixed_r.join('') + '</tr>');
      });
      
      //if(data.length === 0) return;
      
      that.layBody.scrollTop(0);
      that.layMain.find('.'+ NONE).remove();
      that.layMain.find('tbody').html(trs.join(''));
      that.layFixLeft.find('tbody').html(trs_fixed.join(''));
      that.layFixRight.find('tbody').html(trs_fixed_r.join(''));

      that.renderForm();
      that.syncCheckAll();
      that.haveInit ? that.scrollPatch() : setTimeout(function(){
        that.scrollPatch();
      }, 50);
      that.haveInit = true;
      layer.close(that.tipsIndex);
    };
    
    that.key = options.id || options.index;
    table.cache[that.key] = data; //记录数据
    
    //显示隐藏分页栏
    that.layPage[data.length === 0 && curr == 1 ? 'addClass' : 'removeClass'](HIDE);
    
    //排序
    if(sort){
      return render();
    }
    
    if(data.length === 0){
      that.renderForm();
      that.layFixed.remove();
      that.layMain.find('tbody').html('');
      that.layMain.find('.'+ NONE).remove();
      return that.layMain.append('<div class="'+ NONE +'">'+ options.text.none +'</div>');
    }
    
    render();

    //同步分页状态
    if(options.page){
      options.page = $.extend({
        elem: 'layui-table-page' + options.index
        ,count: count
        ,limit: options.limit
        ,limits: options.limits || [10,20,30,40,50,60,70,80,90]
        ,groups: 3
        ,layout: ['prev', 'page', 'next', 'skip', 'count', 'limit']
        ,prev: '<i class="layui-icon">&#xe603;</i>'
        ,next: '<i class="layui-icon">&#xe602;</i>'
        ,jump: function(obj, first){
          if(!first){
            //分页本身并非需要做以下更新，下面参数的同步，主要是因为其它处理统一用到了它们
            //而并非用的是 options.page 中的参数（以确保分页未开启的情况仍能正常使用）
            that.page = obj.curr; //更新页码
            options.limit = obj.limit; //更新每页条数
            
            that.pullData(obj.curr, that.loading());
          }
        }
      }, options.page);
      options.page.count = count; //更新总条数
      laypage.render(options.page);
    }
  };
  
  //找到对应的列元素
  Class.prototype.getColElem = function(parent, field){
    var that = this
    ,options = that.config;
    return parent.eq(0).find('.laytable-cell-'+ (options.index + '-' + field) + ':eq(0)');
  };
  
  //渲染表单
  Class.prototype.renderForm = function(type){
    form.render(type, 'LAY-table-'+ this.index);
  }
  
  //数据排序
  Class.prototype.sort = function(th, type, pull, formEvent){
    var that = this
    ,field
    ,res = {}
    ,options = that.config
    ,filter = options.elem.attr('lay-filter')
    ,data = table.cache[that.key], thisData;
    
    //字段匹配
    if(typeof th === 'string'){
      that.layHeader.find('th').each(function(i, item){
        var othis = $(this)
        ,_field = othis.data('field');
        if(_field === th){
          th = othis;
          field = _field;
          return false;
        }
      });
    }

    try {
      var field = field || th.data('field');
      
      //如果欲执行的排序已在状态中，则不执行渲染
      if(that.sortKey && !pull){
        if(field === that.sortKey.field && type === that.sortKey.sort){
          return;
        }
      }
      
      var elemSort = that.layHeader.find('th .laytable-cell-'+ options.index +'-'+ field).find(ELEM_SORT);
      that.layHeader.find('th').find(ELEM_SORT).removeAttr('lay-sort'); //清除其它标题排序状态
      elemSort.attr('lay-sort', type || null);
      that.layFixed.find('th')
    } catch(e){
      return hint.error('Table modules: Did not match to field');
    }
    
    //记录排序索引和类型
    that.sortKey = {
      field: field
      ,sort: type
    };

    if(type === 'asc'){ //升序
      thisData = layui.sort(data, field);
    } else if(type === 'desc'){ //降序
      thisData = layui.sort(data, field, true);
    } else { //清除排序
      thisData = layui.sort(data, table.config.indexName);
      delete that.sortKey;
    }
    
    res[options.response.dataName] = thisData;
    that.renderData(res, that.page, that.count, true);
    
    if(formEvent){
      layui.event.call(th, MOD_NAME, 'sort('+ filter +')', {
        field: field
        ,type: type
      });
    }
  };
  
  //请求loading
  Class.prototype.loading = function(){
    var that = this
    ,options = that.config;
    if(options.loading && options.url){
      return layer.msg('数据请求中', {
        icon: 16
        ,offset: [
          that.elem.offset().top + that.elem.height()/2 - 35 - _WIN.scrollTop() + 'px'
          ,that.elem.offset().left + that.elem.width()/2 - 90 - _WIN.scrollLeft() + 'px'
        ]
        ,time: -1
        ,anim: -1
        ,fixed: false
      });
    }
  };
  
  //同步选中值状态
  Class.prototype.setCheckData = function(index, checked){
    var that = this
    ,options = that.config
    ,thisData = table.cache[that.key];
    if(!thisData[index]) return;
    if(thisData[index].constructor === Array) return;
    thisData[index][options.checkName] = checked;
  };
  
  //同步全选按钮状态
  Class.prototype.syncCheckAll = function(){
    var that = this
    ,options = that.config
    ,checkAllElem = that.layHeader.find('input[name="layTableCheckbox"]')
    ,syncColsCheck = function(checked){
      that.eachCols(function(i, item){
        if(item.type === 'checkbox'){
          item[options.checkName] = checked;
        }
      });
      return checked;
    };
    
    if(!checkAllElem[0]) return;

    if(table.checkStatus(that.key).isAll){
      if(!checkAllElem[0].checked){
        checkAllElem.prop('checked', true);
        that.renderForm('checkbox');
      }
      syncColsCheck(true);
    } else {
      if(checkAllElem[0].checked){
        checkAllElem.prop('checked', false);
        that.renderForm('checkbox');
      }
      syncColsCheck(false);
    }
  };
  
  //获取cssRule
  Class.prototype.getCssRule = function(field, callback){
    var that = this
    ,style = that.elem.find('style')[0]
    ,sheet = style.sheet || style.styleSheet || {}
    ,rules = sheet.cssRules || sheet.rules;
    layui.each(rules, function(i, item){
      if(item.selectorText === ('.laytable-cell-'+ that.index +'-'+ field)){
        return callback(item), true;
      }
    });
  };
  
  //铺满表格主体高度
  Class.prototype.fullSize = function(){
    var that = this
    ,options = that.config
    ,height = options.height, bodyHeight;
    
    if(that.fullHeightGap){
      height = _WIN.height() - that.fullHeightGap;
      if(height < 135) height = 135;
      that.elem.css('height', height);
    }

    //tbody区域高度
    bodyHeight = parseFloat(height) - parseFloat(that.layHeader.height()) - 1;  
    if(options.toolbar){
      bodyHeight = bodyHeight - that.layTool.outerHeight();
    }
    if(options.page){
      bodyHeight = bodyHeight - that.layPage.outerHeight() - 1;
    }
    that.layMain.css('height', bodyHeight);
  };
  
  //获取滚动条宽度
  Class.prototype.getScrollWidth = function(elem){
    var width = 0;
    if(elem){
      width = elem.offsetWidth - elem.clientWidth;
    } else {
      elem = document.createElement('div');
      elem.style.width = '100px';
      elem.style.height = '100px';
      elem.style.overflowY = 'scroll';

      document.body.appendChild(elem);
      width = elem.offsetWidth - elem.clientWidth;
      document.body.removeChild(elem);
    }
    return width;
  };
  
  //滚动条补丁
  Class.prototype.scrollPatch = function(){
    var that = this
    ,layMainTable = that.layMain.children('table')
    ,scollWidth = that.layMain.width() - that.layMain.prop('clientWidth') //纵向滚动条宽度
    ,scollHeight = that.layMain.height() - that.layMain.prop('clientHeight') //横向滚动条高度
    ,getScrollWidth = that.getScrollWidth(that.layMain[0]) //获取主容器滚动条宽度，如果有的话
    ,outWidth = layMainTable.outerWidth() - that.layMain.width(); //表格内容器的超出宽度

    //如果存在自动列宽，则要保证绝对填充满，并且不能出现横向滚动条
    if(that.autoColNums && outWidth < 5 && !that.scrollPatchWStatus){
      var th = that.layHeader.eq(0).find('thead th:last-child')
      ,field = th.data('field');
      that.getCssRule(field, function(item){
        var width = item.style.width || th.outerWidth();
        item.style.width = (parseFloat(width) - getScrollWidth - outWidth) + 'px';
        
        //二次校验，如果仍然出现横向滚动条
        if(that.layMain.height() - that.layMain.prop('clientHeight') > 0){
          item.style.width = parseFloat(item.style.width) - 1 + 'px';
        }

        that.scrollPatchWStatus = true;
      });
    }
    
    if(scollWidth && scollHeight){
      if(!that.elem.find('.layui-table-patch')[0]){
        var patchElem = $('<th class="layui-table-patch"><div class="layui-table-cell"></div></th>'); //补丁元素
        patchElem.find('div').css({
          width: scollWidth
        });
        that.layHeader.eq(0).find('thead tr').append(patchElem)
      }
    } else {
      that.layHeader.eq(0).find('.layui-table-patch').remove();
    }
    
    //固定列区域高度
    var mainHeight = that.layMain.height()
    ,fixHeight = mainHeight - scollHeight;
    that.layFixed.find(ELEM_BODY).css('height', layMainTable.height() > fixHeight ? fixHeight : 'auto');
    
    //表格宽度小于容器宽度时，隐藏固定列
    that.layFixRight[outWidth > 0 ? 'removeClass' : 'addClass'](HIDE); 
    
    //操作栏
    that.layFixRight.css('right', scollWidth - 1); 
  };

  //事件处理
  Class.prototype.events = function(){
    var that = this
    ,options = that.config
    ,_BODY = $('body')
    ,dict = {}
    ,th = that.layHeader.find('th')
    ,resizing
    ,ELEM_CELL = '.layui-table-cell'
    ,filter = options.elem.attr('lay-filter');

    //拖拽调整宽度    
    th.on('mousemove', function(e){
      var othis = $(this)
      ,oLeft = othis.offset().left
      ,pLeft = e.clientX - oLeft;
      if(othis.attr('colspan') > 1 || othis.data('unresize') || dict.resizeStart){
        return;
      }
      dict.allowResize = othis.width() - pLeft <= 10; //是否处于拖拽允许区域
      _BODY.css('cursor', (dict.allowResize ? 'col-resize' : ''));
    }).on('mouseleave', function(){
      var othis = $(this);
      if(dict.resizeStart) return;
      _BODY.css('cursor', '');
    }).on('mousedown', function(e){
      var othis = $(this);
      if(dict.allowResize){
        var field = othis.data('field');
        e.preventDefault();
        dict.resizeStart = true; //开始拖拽
        dict.offset = [e.clientX, e.clientY]; //记录初始坐标
        
        that.getCssRule(field, function(item){
          var width = item.style.width || othis.outerWidth();
          dict.rule = item;
          dict.ruleWidth = parseFloat(width);
          dict.minWidth = othis.data('minwidth') || options.cellMinWidth;
        });
      }
    });
    //拖拽中
    _DOC.on('mousemove', function(e){
      if(dict.resizeStart){
        e.preventDefault();
        if(dict.rule){
          var setWidth = dict.ruleWidth + e.clientX - dict.offset[0];
          if(setWidth < dict.minWidth) setWidth = dict.minWidth;
          dict.rule.style.width = setWidth + 'px';
          layer.close(that.tipsIndex);
        }
        resizing = 1
      }
    }).on('mouseup', function(e){
      if(dict.resizeStart){
        dict = {};
        _BODY.css('cursor', '');
        that.scrollPatch();
      }
      if(resizing === 2){
        resizing = null;
      }
    });
    
    //排序
    th.on('click', function(){
      var othis = $(this)
      ,elemSort = othis.find(ELEM_SORT)
      ,nowType = elemSort.attr('lay-sort')
      ,type;

      if(!elemSort[0] || resizing === 1) return resizing = 2;      
      
      if(nowType === 'asc'){
        type = 'desc';
      } else if(nowType === 'desc'){
        type = null;
      } else {
        type = 'asc';
      }
      that.sort(othis, type, null, true);
    }).find(ELEM_SORT+' .layui-edge ').on('click', function(e){
      var othis = $(this)
      ,index = othis.index()
      ,field = othis.parents('th').eq(0).data('field')
      layui.stope(e);
      if(index === 0){
        that.sort(field, 'asc', null, true);
      } else {
        that.sort(field, 'desc', null, true);
      }
    });
    
    //复选框选择
    that.elem.on('click', 'input[name="layTableCheckbox"]+', function(){
      var checkbox = $(this).prev()
      ,childs = that.layBody.find('input[name="layTableCheckbox"]')
      ,index = checkbox.parents('tr').eq(0).data('index')
      ,checked = checkbox[0].checked
      ,isAll = checkbox.attr('lay-filter') === 'layTableAllChoose';
      
      //全选
      if(isAll){
        childs.each(function(i, item){
          item.checked = checked;
          that.setCheckData(i, checked);
        });
        that.syncCheckAll();
        that.renderForm('checkbox');
      } else {
        that.setCheckData(index, checked);
        that.syncCheckAll();
      }
      layui.event.call(this, MOD_NAME, 'checkbox('+ filter +')', {
        checked: checked
        ,data: table.cache[that.key] ? (table.cache[that.key][index] || {}) : {}
        ,type: isAll ? 'all' : 'one'
      });
    });
    
    //行事件
    that.layBody.on('mouseenter', 'tr', function(){
      var othis = $(this)
      ,index = othis.index();
      that.layBody.find('tr:eq('+ index +')').addClass(ELEM_HOVER)
    }).on('mouseleave', 'tr', function(){
      var othis = $(this)
      ,index = othis.index();
      that.layBody.find('tr:eq('+ index +')').removeClass(ELEM_HOVER)
    });
    
    //单元格编辑
    that.layBody.on('change', '.'+ELEM_EDIT, function(){
      var othis = $(this)
      ,value = this.value
      ,field = othis.parent().data('field')
      ,index = othis.parents('tr').eq(0).data('index')
      ,data = table.cache[that.key][index];
      
      data[field] = value; //更新缓存中的值
      
      layui.event.call(this, MOD_NAME, 'edit('+ filter +')', {
        value: value
        ,data: data
        ,field: field
      });
    }).on('blur', '.'+ELEM_EDIT, function(){
      var templet
      ,othis = $(this)
      ,field = othis.parent().data('field')
      ,index = othis.parents('tr').eq(0).data('index')
      ,data = table.cache[that.key][index];
      that.eachCols(function(i, item){
        if(item.field == field && item.templet){
          templet = item.templet;
        }
      });
      othis.siblings(ELEM_CELL).html(
        templet ? laytpl($(templet).html() || this.value).render(data) : this.value
      );
      othis.parent().data('content', this.value);
      othis.remove();
    });
    
    //单元格事件
    that.layBody.on('click', 'td', function(){
      var othis = $(this)
      ,field = othis.data('field')
      ,editType = othis.data('edit')
      ,elemCell = othis.children(ELEM_CELL);
      
      layer.close(that.tipsIndex);
      if(othis.data('off')) return;
      
      //显示编辑表单
      if(editType){
        if(editType === 'select') { //选择框
          //var select = $('<select class="'+ ELEM_EDIT +'" lay-ignore><option></option></select>');
          //othis.find('.'+ELEM_EDIT)[0] || othis.append(select);
        } else { //输入框
          var input = $('<input class="layui-input '+ ELEM_EDIT +'">');
          input[0].value = othis.data('content') || elemCell.text();
          othis.find('.'+ELEM_EDIT)[0] || othis.append(input);
          input.focus();
        }
        return;
      }
      
      //如果出现省略，则可查看更多
      if(elemCell.find('.layui-form-switch,.layui-form-checkbox')[0]) return; //限制不出现更多（暂时）
      
      if(Math.round(elemCell.prop('scrollWidth')) > Math.round(elemCell.outerWidth())){
        that.tipsIndex = layer.tips([
          '<div class="layui-table-tips-main" style="margin-top: -'+ (elemCell.height() + 16) +'px;'+ function(){
            if(options.size === 'sm'){
              return 'padding: 4px 15px; font-size: 12px;';
            }
            if(options.size === 'lg'){
              return 'padding: 14px 15px;';
            }
            return '';
          }() +'">'
            ,elemCell.html()
          ,'</div>'
          ,'<i class="layui-icon layui-table-tips-c">&#x1006;</i>'
        ].join(''), elemCell[0], {
          tips: [3, '']
          ,time: -1
          ,anim: -1
          ,maxWidth: (device.ios || device.android) ? 300 : 600
          ,isOutAnim: false
          ,skin: 'layui-table-tips'
          ,success: function(layero, index){
            layero.find('.layui-table-tips-c').on('click', function(){
              layer.close(index);
            });
          }
        });
      }
    });
    
    //工具条操作事件
    that.layBody.on('click', '*[lay-event]', function(){
      var othis = $(this)
      ,index = othis.parents('tr').eq(0).data('index')
      ,tr = that.layBody.find('tr[data-index="'+ index +'"]')
      ,ELEM_CLICK = 'layui-table-click'
      ,data = table.cache[that.key][index];
      
      layui.event.call(this, MOD_NAME, 'tool('+ filter +')', {
        data: table.clearCacheKey(data)
        ,event: othis.attr('lay-event')
        ,tr: tr
        ,del: function(){
          table.cache[that.key][index] = [];
          tr.remove();
          that.scrollPatch();
        }
        ,update: function(fields){
          fields = fields || {};
          layui.each(fields, function(key, value){
            if(key in data){
              var templet, td = tr.children('td[data-field="'+ key +'"]');
              data[key] = value;
              that.eachCols(function(i, item2){
                if(item2.field == key && item2.templet){
                  templet = item2.templet;
                }
              });
              td.children(ELEM_CELL).html(
                templet ? laytpl($(templet).html() || value).render(data) : value
              );
              td.data('content', value);
            }
          });
        }
      });
      tr.addClass(ELEM_CLICK).siblings('tr').removeClass(ELEM_CLICK);
    });
    
    //同步滚动条
    that.layMain.on('scroll', function(){
      var othis = $(this)
      ,scrollLeft = othis.scrollLeft()
      ,scrollTop = othis.scrollTop();
      
      that.layHeader.scrollLeft(scrollLeft);
      that.layFixed.find(ELEM_BODY).scrollTop(scrollTop);
      
      layer.close(that.tipsIndex);
    });
    
    _WIN.on('resize', function(){ //自适应
       that.fullSize();
       that.scrollPatch();
    });
  };
  
  //初始化
  table.init = function(filter, settings){
    settings = settings || {};
    var that = this
    ,elemTable = filter ? $('table[lay-filter="'+ filter +'"]') : $(ELEM + '[lay-data]')
    ,errorTips = 'Table element property lay-data configuration item has a syntax error: ';

    //遍历数据表格
    elemTable.each(function(){
      var othis = $(this), tableData = othis.attr('lay-data');
      
      try{
        tableData = new Function('return '+ tableData)();
      } catch(e){
        hint.error(errorTips + tableData)
      }
      
      var cols = [], options = $.extend({
        elem: this
        ,cols: []
        ,data: []
        ,skin: othis.attr('lay-skin') //风格
        ,size: othis.attr('lay-size') //尺寸
        ,even: typeof othis.attr('lay-even') === 'string' //偶数行背景
      }, table.config, settings, tableData);
      
      filter && othis.hide();
      
      //获取表头数据
      othis.find('thead>tr').each(function(i){
        options.cols[i] = [];
        $(this).children().each(function(ii){
          var th = $(this), itemData = th.attr('lay-data');
          
          try{
            itemData = new Function('return '+ itemData)();
          } catch(e){
            return hint.error(errorTips + itemData)
          }
          
          var row = $.extend({
            title: th.text()
            ,colspan: th.attr('colspan') || 0 //列单元格
            ,rowspan: th.attr('rowspan') || 0 //行单元格
          }, itemData);

          if(row.colspan < 2) cols.push(row);
          options.cols[i].push(row);
        });
      });

      //获取表体数据
      othis.find('tbody>tr').each(function(i1){
        var tr = $(this), row = {};
        //如果定义了字段名
        tr.children('td').each(function(i2, item2){
          var td = $(this)
          ,field = td.data('field');
          if(field){
            return row[field] = td.html();
          }
        });
        //如果未定义字段名
        layui.each(cols, function(i3, item3){
          var td = tr.children('td').eq(i3);
          row[item3.field] = td.html();
        });
        options.data[i1] = row;
      });
      table.render(options);
    });

    return that;
  };
  
  //表格选中状态
  table.checkStatus = function(id){
    var nums = 0
    ,invalidNum = 0
    ,arr = []
    ,data = table.cache[id] || [];
    //计算全选个数
    layui.each(data, function(i, item){
      if(item.constructor === Array){
        invalidNum++; //无效数据，或已删除的
        return;
      }
      if(item[table.config.checkName]){
        nums++;
        arr.push(table.clearCacheKey(item));
      }
    });
    return {
      data: arr //选中的数据
      ,isAll: data.length ? (nums === (data.length - invalidNum)) : false //是否全选
    };
  };
  
  //表格重载
  thisTable.config = {};
  table.reload = function(id, options){
    var config = thisTable.config[id];
    options = options || {};
    if(!config) return hint.error('The ID option was not found in the table instance');
    if(options.data && options.data.constructor === Array) delete config.data;
    return table.render($.extend(true, {}, config, options));
  };
 
  //核心入口
  table.render = function(options){
    var inst = new Class(options);
    return thisTable.call(inst);
  };
  
  //清除临时Key
  table.clearCacheKey = function(data){
    data = $.extend({}, data);
    delete data[table.config.checkName];
    delete data[table.config.indexName];
    return data;
  };
  
  //自动完成渲染
  table.init();
  
  exports(MOD_NAME, table);
});