如何刪除jqxtreeGrid中的複選框圖標僅在父級？

Question

如何刪除jqxtreeGrid中的複選框圖標，只在父級別而不是在兒童級別。

你可以找到我的代碼這裏的jsfiddle：http://jsfiddle.net/Arvind_pal/LLASY/68/

有關條目 「安德魯」 和 「史蒂芬」 應該不會出現一個複選框，看到這個截圖：

JS文件

var employees = [{ 
     "EmployeeID": 2, 
      "FirstName": "Andrew", 
      "LastName": "Fuller", 
      "Country": "USA", 
      "Title": "Vice President, Sales", 
      "HireDate": "1992-08-14 00:00:00", 
      "BirthDate": "1952-02-19 00:00:00", 
      "City": "Tacoma", 
      "Address": "908 W. Capital Way", 
      "expanded": "true", 
     children: [{ 
      "EmployeeID": 8, 
       "FirstName": "Laura", 
       "LastName": "Callahan", 
       "Country": "USA", 
       "Title": "Inside Sales Coordinator", 
       "HireDate": "1994-03-05 00:00:00", 
       "BirthDate": "1958-01-09 00:00:00", 
       "City": "Seattle", 
       "Address": "4726 - 11th Ave. N.E." 
     }, { 
      "EmployeeID": 1, 
       "FirstName": "Nancy", 
       "LastName": "Davolio", 
       "Country": "USA", 
       "Title": "Sales Representative", 
       "HireDate": "1992-05-01 00:00:00", 
       "BirthDate": "1948-12-08 00:00:00", 
       "City": "Seattle", 
       "Address": "507 - 20th Ave. E.Apt. 2A" 
     }, { 
      "EmployeeID": 3, 
       "FirstName": "Janet", 
       "LastName": "Leverling", 
       "Country": "USA", 
       "Title": "Sales Representative", 
       "HireDate": "1992-04-01 00:00:00", 
       "BirthDate": "1963-08-30 00:00:00", 
       "City": "Kirkland", 
       "Address": "722 Moss Bay Blvd." 
     }, { 
      "EmployeeID": 4, 
       "FirstName": "Margaret", 
       "LastName": "Peacock", 
       "Country": "USA", 
       "Title": "Sales Representative", 
       "HireDate": "1993-05-03 00:00:00", 
       "BirthDate": "1937-09-19 00:00:00", 
       "City": "Redmond", 
       "Address": "4110 Old Redmond Rd." 
     }, { 
      "EmployeeID": 5, 
       "FirstName": "Steven", 
       "LastName": "Buchanan", 
       "Country": "UK", 
       "Title": "Sales Manager", 
       "HireDate": "1993-10-17 00:00:00", 
       "BirthDate": "1955-03-04 00:00:00", 
       "City": "London", 
       "Address": "14 Garrett Hill", 
       "expanded": "true", 
      children: [{ 
       "EmployeeID": 6, 
        "FirstName": "Michael", 
        "LastName": "Suyama", 
        "Country": "UK", 
        "Title": "Sales Representative", 
        "HireDate": "1993-10-17 00:00:00", 
        "BirthDate": "1963-07-02 00:00:00", 
        "City": "London", 
        "Address": "Coventry House Miner Rd." 
      }, { 
       "EmployeeID": 7, 
        "FirstName": "Robert", 
        "LastName": "King", 
        "Country": "UK", 
        "Title": "Sales Representative", 
        "HireDate": "1994-01-02 00:00:00", 
        "BirthDate": "1960-05-29 00:00:00", 
        "City": "London", 
        "Address": "Edgeham Hollow Winchester Way" 
      }, { 
       "EmployeeID": 9, 
        "FirstName": "Anne", 
        "LastName": "Dodsworth", 
        "Country": "UK", 
        "Title": "Sales Representative", 
        "HireDate": "1994-11-15 00:00:00", 
        "BirthDate": "1966-01-27 00:00:00", 
        "City": "London", 
        "Address": "7 Houndstooth Rd." 
      }] 
     }] 
    }]; 

    //// prepare the data 
    var source = { 
     dataType: "json", 
     dataFields: [{ 
      name: 'EmployeeID', 
      type: 'number' 
     }, { 
      name: 'FirstName', 
      type: 'string' 
     }, { 
      name: 'LastName', 
      type: 'string' 
     }, { 
      name: 'Country', 
      type: 'string' 
     }, { 
      name: 'City', 
      type: 'string' 
     }, { 
      name: 'Address', 
      type: 'string' 
     }, { 
      name: 'Title', 
      type: 'string' 
     }, { 
      name: 'HireDate', 
      type: 'date' 
     }, { 
      name: 'children', 
      type: 'array' 
     }, { 
      name: 'expanded', 
      type: 'bool' 
     }, { 
      name: 'BirthDate', 
      type: 'date' 
     }], 
     hierarchy: { 
      root: 'children' 
     }, 
     id: 'EmployeeID', 
     localData: employees 
    }; 
    var dataAdapter = new $.jqx.dataAdapter(source); 

    // create Tree Grid 
    $("#treeGrid").jqxTreeGrid({ 
     width: 680, 
     source: dataAdapter, 
     editable: true, 
      checkboxes:true, 
     hierarchicalCheckboxes:true, 
     sortable: true, 
     pageable: true, 
     pagerMode: 'advanced', 
     theme: 'energyblue', 
     columns: [{ 
      text: 'FirstName', 
      dataField: 'FirstName', 
      width: 150 
     }, { 
      text: 'LastName', 
      dataField: 'LastName', 
      width: 120 
     }, { 
      text: 'Title', 
      dataField: 'Title', 
      width: 200 
     }, { 
      text: 'Birth Date', 
      dataField: 'BirthDate', 
      cellsFormat: 'd', 
      width: 120 
     }, { 
      text: 'Hire Date', 
      dataField: 'HireDate', 
      cellsFormat: 'd', 
      width: 120 
     }, { 
      text: 'Address', 
      dataField: 'Address', 
      width: 250 
     }, { 
      text: 'City', 
      dataField: 'City', 
      width: 120 
     }, { 
      text: 'Country', 
      dataField: 'Country', 
      width: 120 
     }] 

    }); 
    $('#treeGrid').on('rowBeginEdit', function (event) { 
     var args = event.args; 
     var row = args.row; 
     alert("The row you are editing is: " + row.FirstName + " " + row.LastName); 
    }); 

HTML文件

<div id="treeGrid"></div> 

Answer 1

我發現該溶液中，用下面的代碼來複選框屬性：

checkboxes: function (rowKey, dataRow) { 
    var level = dataRow.level; 
    if (level != 0) { 
     return true; 
    } 
    return false; 
    }