Ext.js5的表格插件—checkbox/编辑等常见需求(15)

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本文详细介绍了如何在表格中添加复选框选择功能，并提供了复选框选择的使用方法。同时，还展示了如何实现表格的列编辑功能，包括添加编辑插件和指定编辑列的方法。

view

Ext.define('KitchenSink.view.grid.CheckboxSelection', {
    extend: 'Ext.grid.Panel',

    xtype: 'checkbox-selection',
    store: 'Companies',
    //下文会详细介绍，此处是checkbox的关键
    //官方的例子中只有一个selType，没有selModel,暂时有点没看明白20151218
    //所使用到的选择模型的xtype。默认为'rowmodel'。 如果只是一个配置对象或者在selModel配置中未给出任何指定则在这里将被用来创建选择模型。
    selType: 'checkboxmodel',
    columns: [
        {text: "Company", width: 300, dataIndex: 'name'},
        {text: "Price", formatter: 'usMoney', dataIndex: 'price'},
        {text: "Change", dataIndex: 'change'},
        {text: "% Change", dataIndex: 'pctChange'},
        {text: "Last Updated", width: 120, formatter: 'date("m/d/Y")', dataIndex: 'lastChange'}
    ],
    columnLines: true,
    height: 300,
    frame: true,
    title: 'Framed with Checkbox Selection and Horizontal Scrolling',
    iconCls: 'icon-grid',

    initComponent: function() {
        this.width = 750;
        this.callParent();
    }
});

store

Ext.define('KitchenSink.store.Companies', {
    extend: 'Ext.data.ArrayStore',
    alias: 'store.companies',
    model: 'KitchenSink.model.Company',
    data: [
        [0,  '3m Co',                                       71.72, 0.02,  0.03,  '9/1 12:00am', 'Manufacturing'],
        [1,  'Alcoa Inc',                                   29.01, 0.42,  1.47,  '9/1 12:00am', 'Manufacturing'],
        [2,  'Altria Group Inc',                            83.81, 0.28,  0.34,  '9/1 12:00am', 'Manufacturing'],
        [3,  'American Express Company',                    52.55, 0.01,  0.02,  '9/1 12:00am', 'Finance'],
        [4,  'American International Group, Inc.',          64.13, 0.31,  0.49,  '9/1 12:00am', 'Services'],
        [5,  'AT&T Inc.',                                   31.61, -0.48, -1.54, '9/1 12:00am', 'Services'],
        [6,  'Boeing Co.',                                  75.43, 0.53,  0.71,  '9/1 12:00am', 'Manufacturing'],
        [7,  'Caterpillar Inc.',                            67.27, 0.92,  1.39,  '9/1 12:00am', 'Services'],
        [8,  'Citigroup, Inc.',                             49.37, 0.02,  0.04,  '9/1 12:00am', 'Finance'],
        [9,  'E.I. du Pont de Nemours and Company',         40.48, 0.51,  1.28,  '9/1 12:00am', 'Manufacturing'],
        [10, 'Exxon Mobil Corp',                            68.1,  -0.43, -0.64, '9/1 12:00am', 'Manufacturing'],
        [11, 'General Electric Company',                    34.14, -0.08, -0.23, '9/1 12:00am', 'Manufacturing'],
        [12, 'General Motors Corporation',                  30.27, 1.09,  3.74,  '9/1 12:00am', 'Automotive'],
        [13, 'Hewlett-Packard Co.',                         36.53, -0.03, -0.08, '9/1 12:00am', 'Computer'],
        [14, 'Honeywell Intl Inc',                          38.77, 0.05,  0.13,  '9/1 12:00am', 'Manufacturing'],
        [15, 'Intel Corporation',                           19.88, 0.31,  1.58,  '9/1 12:00am', 'Computer'],
        [16, 'International Business Machines',             81.41, 0.44,  0.54,  '9/1 12:00am', 'Computer'],
        [17, 'Johnson & Johnson',                           64.72, 0.06,  0.09,  '9/1 12:00am', 'Medical'],
        [18, 'JP Morgan & Chase & Co',                      45.73, 0.07,  0.15,  '9/1 12:00am', 'Finance'],
        [19, 'McDonald\'s Corporation',                     36.76, 0.86,  2.40,  '9/1 12:00am', 'Food'],
        [20, 'Merck & Co., Inc.',                           40.96, 0.41,  1.01,  '9/1 12:00am', 'Medical'],
        [21, 'Microsoft Corporation',                       25.84, 0.14,  0.54,  '9/1 12:00am', 'Computer'],
        [22, 'Pfizer Inc',                                  27.96, 0.4,   1.45,  '9/1 12:00am', 'Medical'],
        [23, 'The Coca-Cola Company',                       45.07, 0.26,  0.58,  '9/1 12:00am', 'Food'],
        [24, 'The Home Depot, Inc.',                        34.64, 0.35,  1.02,  '9/1 12:00am', 'Retail'],
        [25, 'The Procter & Gamble Company',                61.91, 0.01,  0.02,  '9/1 12:00am', 'Manufacturing'],
        [26, 'United Technologies Corporation',             63.26, 0.55,  0.88,  '9/1 12:00am', 'Computer'],
        [27, 'Verizon Communications',                      35.57, 0.39,  1.11,  '9/1 12:00am', 'Services'],
        [28, 'Wal-Mart Stores, Inc.',                       45.45, 0.73,  1.63,  '9/1 12:00am', 'Retail'],
        [29, 'Walt Disney Company (The) (Holding Company)', 29.89, 0.24,  0.81,  '9/1 12:00am', 'Services']
    ]
}, function(cls) {
    var data = cls.prototype.config.data;

    for(var i = 0; i < data.length; i++){
        data[i].push('Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Sed metus nibh, sodales a, porta at, vulputate eget, dui. Pellentesque ut nisl. ');
    }
});

model

Ext.define('KitchenSink.model.Company', {
    extend: 'KitchenSink.model.Base',
    fields: [
        {name: 'name'},
        {name: 'price', type: 'float'},
        {name: 'change', type: 'float'},
        {name: 'pctChange', type: 'float'},
        {name: 'lastChange', type: 'date',  dateFormat: 'n/j h:ia'},
        {name: 'industry'},
        {name: 'desc'},
        // Trend begins with the cerrent price. Changes get pushed onto the end
        {
            name: 'trend',
            convert: function(value, record) {
                // Record creation call with no trend there: start with current price
                if (value === null) {
                    return [record.get('price')];
                }
                return Ext.isArray(value) ? value : [ value ];
            } 
        },
        // Rating dependent upon performance 0 = best, 2 = worst
        {
            name: 'rating',
            type: 'int',
            convert: function(value, record) {
                var pct = record.get('pctChange');
                if (pct < 0)
                    return 2;
                if (pct < 1)
                    return 1;
                return 0;
            }
        }
    ],

    // Override to keep the last 10 prices in the trend field
    set: function(fieldName, value) {
        if (fieldName === 'price') {
            this.callParent([{
                price: value,
                trend: this.addToTrend(fieldName.price)
            }]);
        }
        else {
            if (typeof fieldName !== 'string' && 'price' in fieldName) {
                fieldName.trend = this.addToTrend(fieldName.price);
            }
            this.callParent(arguments);
        }
    },

    // Override to keep the last 10 prices in the trend field
    addToTrend: function(value) {
        var trend = this.data.trend.concat(value);

        if (trend.length > 10) {
            Ext.Array.splice(trend, 0, trend.length - 10);
        }
        return trend;
    }
});

以下知识来源于齐飞的总结
地址：http://www.cnblogs.com/youring2/p/3998761.html
GridPanel的行选择模型（SelectionModel）
一般情况下，表格中是不会出现复选框的，而是进行的点击行选中，默认为多选（“MULTI”）
如何添加复选框

selType: "checkboxmodel",
selModel: {
    injectCheckbox: 0,
    mode: "SIMPLE",     //"SINGLE"/"SIMPLE"/"MULTI"
    checkOnly: true     //只能通过checkbox选择
},

通过代码选择行

//选择行，并保持其他行的选择状态
grid.getSelectionModel().select(records, true);
//选择所有
grid.getSelectionModel().selectAll();
//根据row index选择
grid.getSelectionModel().selectRange(startRow, endRow, true)

获取选中行

var records = grid.getSelectionModel().getSelection();

显示行号，一般情况下是不显示的

columns: [
    { xtype: 
"rownumberer", text: "序号"

, width:40 },
    { text: '姓名', dataIndex: 'name' },
    {
        text: '年龄', dataIndex: 'age', xtype: 'numbercolumn', format: '0',

    },
    { text: '电话', dataIndex: 'phone', editor: "textfield" }
],

实现表格的列编辑
1、添加编辑插件（行编辑是RowEditing）

plugins: [
    Ext.create('Ext.grid.plugin.CellEditing', {
        clicksToEdit: 1
    })
],

2、为需要编辑的列指定编辑

columns: [
    { xtype: "rownumberer", text: "序号", width:40 },
    { text: '姓名', dataIndex: 'name' },
    {
        text: '年龄', dataIndex: 'age', xtype: 'numbercolumn', format: '0',
        editor: {
            xtype: "numberfield",
            decimalPrecision: 0,
            selectOnFocus: true
        }
    },
    { text: '电话', dataIndex: 'phone', editor: "textfield" }

表格再被编辑后会自动出现小红角，如果要去掉小红角

grid.on('edit', function (editor, e) {
    // commit the changes right after editing finished
    e.record.commit();
});

选中单元格的内容，一般情况下单元格的内容是不可以被选中的

viewConfig:{
    stripeRows:true,//在表格中显示斑马线
    enableTextSelection:true //可以复制单元格文字
}

禁止头部菜单，为每个column定义menuDisabled

{header: 'Idno', dataIndex: 'idno', width:150,menuDisabled:true}