EXtJS grid中的checkselect模式不选中时的键盘上下键

 

grid.on('keydown', function(e) {

 var grid = Ext.getCmp('projectCaseListId');
  var k = e.getKey();
  var view = grid.getView();
  if(grid.getSelectionModel().getCount()>=1){//checkselect时不响应该事件
   view.removeRowClass(lastrownum1,'x-grid3-row-selected1');
   return ;
  }      
  if(k==38){ //up
    if(lastrownum1==0)//在最上面一行时位置保持不动
     {    
     view.focusRow(0);     
     lastrownum1=0;    
     }else{
       view.removeRowClass(lastrownum1,'x-grid3-row-selected1');//移除上一次的高亮显示样式
      lastrownum1=lastrownum1-1;      
      view.focusRow(lastrownum1); 
      view.addRowClass(lastrownum1,'x-grid3-row-selected1');//添加目标行的高亮样式
     }
   }          
  if(k==40){//down
   if(lastrownum1==(grid.getStore().getCount()-1))
    {         
    lastrownum1=grid.getStore().getCount()-1; 
    view.focusRow(lastrownum1);
    }else{
      view.removeRowClass(lastrownum1,'x-grid3-row-selected1');     
     lastrownum1=lastrownum1+1;     
     view.focusRow(lastrownum1); 
     view.addRowClass(lastrownum1,'x-grid3-row-selected1');
    }   
  }

}

 

 

x-grid3-row-selected1 //jsp中新加的select样式，select样式去掉check部分即可