Ext.js5的数组表格（3）

来源：互联网发布：nga数据库6.0 编辑：程序博客网时间：2024/05/16 11:59

1、数组表格，这是我第一次接触到使用Store和Model（理论的概念介绍请看层级结构文章）
view

Ext.define('KitchenSink.view.grid.ArrayGrid', {    extend: 'Ext.grid.Panel',//当我要做表格的时候我可以继承这个类（类什么的我还不太清楚20151217）    requires: [        'Ext.grid.column.Action'    ],    //我需要这个东西，至于为什么是需要Ext.grid.column.Action我还不清楚20151217    xtype: 'array-grid',    store: 'Companies',//仓库出现了！    stateful: true,    //默认值是false,此处使用true是因为The grid is stateful so you    //can move or hide columns, reload the page, and come back to the grid in the same state    //you left it in.总是就是无论你改变表格的状态之后，他会保存这个改变的状态    //（不过例子并没有啊，骗纸┑(￣Д ￣)┍,可能是我还没有领会到他的点20151217）    collapsible: true,    multiSelect: true,    stateId: 'stateGrid',// 唯一标识符，用于表格的state。非全局唯一标识符。列状态不是单独存在的，它依赖于所在表格的状态。    height: 350,    title: 'Array Grid',    viewConfig: {        enableTextSelection: true//The cells are selectable due to use of the `enableTextSelection` option.    },    initComponent: function () {        var me = this;        //推荐用这样的方式来写this,为什么的话来源于上将军的一篇博客，地址暂时找不到了，20151217，强烈推荐        me.width = 750;        me.columns = [            {                text     : 'Company',                flex     : 1,                sortable : false,                dataIndex: 'name'//表格的Ext.data.Store的Ext.data.Model的field，用于获取需要显示到单元格的值。 必须属性。默认值为null。            },            {                text     : 'Price',                width    : 95,                sortable : true,                formatter: 'usMoney',//转换公式，要做数据处理                dataIndex: 'price'            },            {                text     : 'Change',                width    : 80,                sortable : true,                renderer : function(val) {                    var out = Ext.util.Format.number(val, '0.00');                    if (val > 0) {                        return '<span style="color:' + "#73b51e" + ';">' + out + '</span>';                    } else if (val < 0) {                        return '<span style="color:' + "#cf4c35" + ';">' + out + '</span>';                    }                    return out;                },//renderer 渲染器，还不太懂20151217。这里是渲染输出值的样式。                dataIndex: 'change'            },            {                text     : '% Change',                width    : 100,                sortable : true,                renderer : function(val) {                    var out = Ext.util.Format.number(val, '0.00%');                    if (val > 0) {                        return '<span style="color:' + "#73b51e" + ';">' + out + '</span>';                    } else if (val < 0) {                        return '<span style="color:' + "#cf4c35" + ';">' + out + '</span>';                    }                    return out;                },                dataIndex: 'pctChange'            },            {                text     : 'Last Updated',                width    : 115,                sortable : true,                formatter: 'date("m/d/Y")',                dataIndex: 'lastChange'            },            {                menuDisabled: true,//隐藏列是否在menu中出现，详细：http://blog.csdn.net/dracotianlong/article/details/8545487                sortable: false,                xtype: 'actioncolumn',                width: 50,                items: [{                    iconCls: 'sell-col',                    tooltip: 'Sell stock',                     //getStore（）得到仓库，getAt( Number index )的参数是index,返回index处的记录Record,如果没有找到返回undefined                    handler: function(grid, rowIndex, colIndex) {                        var rec = grid.getStore().getAt(rowIndex);                        Ext.Msg.alert('Sell', 'Sell ' + rec.get('name'));                    }                }, {                  //getClass获取所提供的对象类，此处的change是变化（详见model）                    getClass: function(v, meta, rec) {                        if (rec.get('change') < 0) {                            return 'alert-col';                        } else {                            return 'buy-col';                        }                    },                  //getTip提示标签                    getTip: function(v, meta, rec) {                        if (rec.get('change') < 0) {                            return 'Hold stock';                        } else {                            return 'Buy stock';                        }                    },                    handler: function(grid, rowIndex, colIndex) {                        var rec = grid.getStore().getAt(rowIndex),                            action = (rec.get('change') < 0 ? 'Hold' : 'Buy');                        Ext.Msg.alert(action, action + ' ' + rec.get('name'));                    }                }]            }        ];        me.callParent();    }});

store

Ext.define('KitchenSink.store.Companies', {    extend: 'Ext.data.ArrayStore',    alias: 'store.companies',//仓库的别名是store.xxx    model: 'KitchenSink.model.Company',//模型出现了！    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'},//Model中字段的映射名称. 此名称被用来作引用,类似于dataIndex        {name: 'price', type: 'float'},        {name: 'change', type: 'float'},//变化        {name: 'pctChange', type: 'float'},        {name: 'lastChange', type: 'date',  dateFormat: 'n/j h:ia'},        {name: 'industry'},//隐藏列        {name: 'desc'},        {        //一个函数, 用来将Reader读取的值转换成存储到Model中的对象。如果此参数为'null', 则读取此Field时不会对原始数据进行转换. 这样会提高性能. 但是你必须确保数据是正确的类型并且不需要进行转换。        //参数：v Reader提供的数据值, 如果为undefined则使用defaultValue的参数值        //参数：rec Reader到目前为止读取的Model的数据对象. 注意此时的Model字段值可能尚未被全部填入, 因为字段的读取顺序是根据你在 fields字段数组中的定义顺序。            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 引用类设置名称 参数：name value 返回值：this    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;    }});

感慨：男同事提到的生活现实让我觉得好绝望，我很想逃避。

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