可手动删除多行 [英] Handsontable delete multiple rows

问题描述

我是Handsontable的新手.我正在尝试使用' getSelected '和' alter '(remove_row)方法删除多个选定的表行.但是，在下面的代码中，我收到了Firebug中未定义的错误选择"和Chrome中的未捕获的TypeError:无法读取未定义的属性'0'".选择哪一行或多少行都没有关系.我仍然收到错误，没有行被删除.请问我做错了什么?

I am new to Handsontable. I am trying to delete multiple selected table rows using 'getSelected' and 'alter' methods (remove_row). However, with my code below I am getting the error "selection" not defined in Firebug and "Uncaught TypeError: Cannot read property '0' of undefined " in Chrome. It doesn't matter which row I select or how many. I still get the error and no rows are deleted. What am I doing wrong please?

    $(document).ready(function () {

    var myData = [
        ["", "Kia", "Nissan", "Toyota", "Honda"],
        ["2008", 10, 11, 12, 13],
        ["2009", 20, 11, 14, 13],
        ["2010", 30, 15, 12, 13]
    ];

    $("#exampleGrid").handsontable({
        data: myData,
        startRows: 5,
        startCols: 5,
        //minSpareCols: 1, //always keep at least 1 spare row at the right
        //minSpareRows: 1, //always keep at least 1 spare row at the bottom,
        rowHeaders: true,
        colHeaders: true,
        contextMenu: true,
        currentRowClassName: 'currentRow',
        currentColClassName: 'currentCol'

    });

    $edit = $('#exampleGrid');

    function editRows() {

        $('#addtop').on('click', function () {
            $edit.handsontable('alter', 'insert_row', 0);
        });

        $('#addbottom').on('click', function () {
            $edit.handsontable('alter', 'insert_row');
        });

        var selection = $edit.handsontable('getSelected');
        $('.deletebutton').on('click', function () {
            $edit.handsontable('alter', 'remove_row', selection[0], selection[2]);
        });

    }

    editRows();
  });

这是我的小提琴 http://jsfiddle.net/EfhqJ/48/.

谢谢.

推荐答案

按照目前的情况，getSelected()不返回任何内容...

As it currently stands, getSelected() returns nothing...

getSelected: function () { 
     //https://github.com/warpech/jquery-handsontable/issues/44 
     //cjl if (selection.isSelected()) { 
     //return [priv.selStart.row(), priv.selStart.col(), priv.selEnd.row(), priv.selEnd.col()]; 
     //} 
     }

这是一个很大的问题，因为 handsontable 引用了很多功能.但是，我们可以幸运地使用 afterSelectionEnd事件.

which is a huge problem since handsontable references that function quite a bit. However, we can fortunately use the afterSelectionEnd event.

afterSelectionEnd (r: Number, c: Number, r2: Number, c2: Number)
选择一个或多个单元格后(鼠标悬停时)触发回调.

参数:
r选择开始行
c选择开始列
r2选择结束行
c2选择结束列

afterSelectionEnd (r: Number, c: Number, r2: Number, c2: Number)
Callback fired after one or more cells are selected (on mouse up).

Parameters:
r selection start row
c selection start column
r2 selection end row
c2 selection end column

根据 API ，

alter ('remove_row', index: Number, amount: Number (Optional), source: String (Optional))

删除给定索引处的行.默认金额等于1

alter ('remove_row', index: Number, amount: Number (Optional), source: String (Optional))

Remove the row(s) at given index. Default amount equals 1

这意味着要使用alter('remove_row')，我们只需要提供索引即可.

This means in order to use alter('remove_row'), we only need to provide the index.

这是我制作的工作演示.

注意:

由于 bug ，我们需要在afterSelectionEnd event.

JAVASCRIPT:

JAVASCRIPT:

var myData = [
    ["", "Kia", "Nissan", "Toyota", "Honda"],
    ["2008", 10, 11, 12, 13],
    ["2009", 20, 11, 14, 13],
    ["2010", 30, 15, 12, 13]
    ];

//declare row vars
var row1 = null,
    row2 = null;

var $container = $("#exampleGrid");

$container.handsontable({
    data: myData,
    startRows: 5,
    startCols: 5,
    minSpareCols: 0,
    minSpareRows: 0,
    rowHeaders: true,
    colHeaders: true,
    contextMenu: true,
    afterSelectionEnd: function(x1, y1, x2, y2){

        //add this because of bug
          if( (x1 <= x2 && y1 < y2) || (x1 < x2 && y1 <= y2) || (x1 == x2 && y1 == y2)) {
            row1 = x1;
            if(x1 == 0)
                row2 = parseInt(x2 + 1);
              else
                row2 = x2;
        }
        else if( (x1 >= x2 && y1 > y2) || (x1 > x2 && y1 >= y2)) {
            row1 = x2;
            if(x2 == 0)
                row2 = parseInt(x1 + 1);
              else
                row2 = x1;
        }
        else if(x1 < x2 && y1 > y2) {
            row1 = x1;
            row2 = x2;
        }
        else if(x1 > x2 && y1 < y2) {
            row1 = x2;
            row2 = x1;
        }
    }
});

//gets instance of handsontable
    var instance = $container.handsontable('getInstance');

$('#delete').click(function(){
    if(row1 != null){
        if(row2 != null || row2 != row1 ){
            instance.alter('remove_row', row1, row2);
        }
        else{
            instance.alter('remove_row', row1);
        }
        row1 = null;
        row2 = null;
    }else{
        alert('Please select a cell...');   
    }
});

希望这会有所帮助，让我知道您是否还有其他需求！

Hope this helps and let me know if you need anything else!

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