如何创建一个dojo数据网格，其中一列是标题行中的按钮？ [英] How to create a dojo data grid with one of column being a button in header row?

问题描述

我有一个dojo（v1.6）数据网格，它具有复选框以选择最左列的行。我需要将这些复选框的标题栏作为删除按钮，而不是全选复选框。点击删除按钮，所有选定的行都将被删除。

I have a dojo(v1.6) data grid which have checkbox to select rows as left most column. I need to have header column of these checkbox as delete button instead of Select All checkbox. On clicking the delete button all selected rows gets deleted.

请查找数据网格演示。

我不知道如何将复选框的标题列作为按钮。请帮我自定义小部件。
这里是网格js代码

I don’t know how to bring the header column of checkbox as button. Please help me to customize the widget. Here is grid js code

dojo.ready(function(){
    /*set up data store*/
    var data = {
      identifier: 'id',
      items: []
    };
    var data_list = [
      { col1: "normal", col2: false, col3: 'But are not followed by two hexadecimal', col4: 29.91},
      { col1: "important", col2: false, col3: 'Because a % sign always indicates', col4: 9.33},
      { col1: "important", col2: false, col3: 'Signs can be selectively', col4: 19.34}
    ];
    var rows = 10;
    for(var i=0, l=data_list.length; i<rows; i++){
      data.items.push(dojo.mixin({ id: i+1 }, data_list[i%l]));
    }
    var store = new dojo.data.ItemFileWriteStore({data: data});

    /*set up layout*/
    var layout = [
        { type: "dojox.grid._CheckBoxSelector" },
        [
          {'name': 'Column 1', 'field': 'id', 'width': '20%'},
          {'name': 'Column 2', 'field': 'col2', 'width': '20%'},
          {'name': 'Column 3', 'field': 'col3', 'width': '25%'},
          {'name': 'Column 4', 'field': 'col4', 'width': '20%'}
        ]
    ];
    /*create a new grid:*/
    var grid = new dojox.grid.DataGrid({
        id: 'grid',
        store: store,
        structure: layout,
        cellOverClass: 'cellover'
      },
      document.createElement('div')
    );
    /*append the new grid to the div*/
    dojo.byId("gridDiv").appendChild(grid.domNode);
    /*Call startup() to render the grid*/
    grid.startup();
});

HTML

<div id="gridDiv"></div>

推荐答案

您可以从现有的实现自己的CheckBoxSelector。我通过查看 _Selector.js 源码发现了这些方法。要重写的有趣方法是 generateHtml 和 doclick 。

You can implement your own CheckBoxSelector from the existing one. I discovered the methods by looking at the _Selector.js source. The interesting methods to override were generateHtml and doclick.

请参阅更新小提琴。

    dojo.declare('my.grid._CheckBoxSelector', [dojox.grid._CheckBoxSelector], {
    _headerBuilderClass: dojo.extend(function (view) {
        dojox.grid._HeaderBuilder.call(this, view);
    }, dojox.grid._HeaderBuilder.prototype, {
        generateHtml: function () {
            var w = this.view.contentWidth || 0;
            return '<table style="width:' + w + 'px;" ' +
                'border="0" cellspacing="0" cellpadding="0" ' +
                'role="presentation"><tr><th style="text-align: center;">' +
                '<button data-dojo-type="dijit.form.Button" type="button">x</button><div class="dojoxGridCheckSelector dijitReset dijitInline dijitCheckBox" style="display:none"></div></th></tr></table>';
        },
        doclick: function (e) {
            this.view.grid.removeSelectedRows();
            return true;
        }
    })
});

和

/*set up layout*/
    var layout = [{
        type: "my.grid._CheckBoxSelector"
    },

    ...

    }]];

删除行

    this.view.grid.removeSelectedRows();

您可以在启动后解析网格以创建dijit小部件。

You can parse the grid after startup to create the dijit widgets.

grid.startup();
// Not the best practice here but it should give you a starting point
// on where to find the header node.
dojo.parser.parse(grid.views.views[0].headerContentNode);

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