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grid简略笔记

热度:576   发布时间:2012-08-15 16:57:17.0
grid简单笔记

首先需要创建一个原始数据,然后创建一个store,store里用fields字段寻找数据,field字段里,name属性要和列模型中的dataIndex一样。然后要用store.loadData(myData)去加载数据。第三步创建一个GridPanel.gridpanel里,store属性要和前面的store绑定。最后要把grid.render渲染到页面中去。

/*!

 * Ext JS Library 3.3.1

 * Copyright(c) 2006-2010 Sencha Inc.

 * licensing@sencha.com

 * http://www.sencha.com/license

 */

Ext.onReady(function(){

    Ext.QuickTips.init();

 

    // NOTE: This is an example showing simple state management. During development,

    // it is generally best to disable state management as dynamically-generated ids

    // can change across page loads, leading to unpredictable results.  The developer

    // should ensure that stable state ids are set for stateful components in real apps.   

    Ext.state.Manager.setProvider(new Ext.state.CookieProvider());

 

    // sample static data for the store

    var myData = [

        ['3m Co',                               71.72, 0.02,  0.03,  '9/1 12:00am'],

        ['Alcoa Inc',                           29.01, 0.42,  1.47,  '9/1 12:00am'],

        ['Altria Group Inc',                    83.81, 0.28,  0.34,  '9/1 12:00am'],

        ['American Express Company',            52.55, 0.01,  0.02,  '9/1 12:00am'],

        ['American International Group, Inc.',  64.13, 0.31,  0.49,  '9/1 12:00am'],

        ['AT&T Inc.',                           31.61, -0.48, -1.54, '9/1 12:00am'],

        ['Boeing Co.',                          75.43, 0.53,  0.71,  '9/1 12:00am'],

        ['Caterpillar Inc.',                    67.27, 0.92,  1.39,  '9/1 12:00am'],

        ['Citigroup, Inc.',                     49.37, 0.02,  0.04,  '9/1 12:00am'],

        ['E.I. du Pont de Nemours and Company', 40.48, 0.51,  1.28,  '9/1 12:00am'],

        ['Exxon Mobil Corp',                    68.1,  -0.43, -0.64, '9/1 12:00am'],

        ['General Electric Company',            34.14, -0.08, -0.23, '9/1 12:00am'],

        ['General Motors Corporation',          30.27, 1.09,  3.74,  '9/1 12:00am'],

        ['Hewlett-Packard Co.',                 36.53, -0.03, -0.08, '9/1 12:00am'],

        ['Honeywell Intl Inc',                  38.77, 0.05,  0.13,  '9/1 12:00am'],

        ['Intel Corporation',                   19.88, 0.31,  1.58,  '9/1 12:00am'],

        ['International Business Machines',     81.41, 0.44,  0.54,  '9/1 12:00am'],

        ['Johnson & Johnson',                   64.72, 0.06,  0.09,  '9/1 12:00am'],

        ['JP Morgan & Chase & Co',              45.73, 0.07,  0.15,  '9/1 12:00am'],

        ['McDonald\'s Corporation',             36.76, 0.86,  2.40,  '9/1 12:00am'],

        ['Merck & Co., Inc.',                   40.96, 0.41,  1.01,  '9/1 12:00am'],

        ['Microsoft Corporation',               25.84, 0.14,  0.54,  '9/1 12:00am'],

        ['Pfizer Inc',                          27.96, 0.4,   1.45,  '9/1 12:00am'],

        ['The Coca-Cola Company',               45.07, 0.26,  0.58,  '9/1 12:00am'],

        ['The Home Depot, Inc.',                34.64, 0.35,  1.02,  '9/1 12:00am'],

        ['The Procter & Gamble Company',        61.91, 0.01,  0.02,  '9/1 12:00am'],

        ['United Technologies Corporation',     63.26, 0.55,  0.88,  '9/1 12:00am'],

        ['Verizon Communications',              35.57, 0.39,  1.11,  '9/1 12:00am'],            

        ['Wal-Mart Stores, Inc.',               45.45, 0.73,  1.63,  '9/1 12:00am']

    ];

 

    /**

     * Custom function used for column renderer

     * @param {Object} val

     */

    function change(val) {

        if (val > 0) {

            return '<span style="color:green;">' + val + '</span>';

        } else if (val < 0) {

            return '<span style="color:red;">' + val + '</span>';

        }

        return val;

    }

 

    /**

     * Custom function used for column renderer

     * @param {Object} val

     */

    function pctChange(val) {

        if (val > 0) {

            return '<span style="color:green;">' + val + '%</span>';

        } else if (val < 0) {

            return '<span style="color:red;">' + val + '%</span>';

        }

        return val;

    }

 

    // create the data store

    var store = new Ext.data.ArrayStore({

        fields: [

           {name: 'company'},

           {name: 'price',      type: 'float'},

           {name: 'change',     type: 'float'},

           {name: 'pctChange',  type: 'float'},

           {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}

        ]

    });

 

    // manually load local data

    store.loadData(myData);

 

    // create the Grid

    var grid = new Ext.grid.GridPanel({

        store: store,

        columns: [

            {

                id       :'company',

                header   : 'Company',

                width    : 160,

                sortable : true,

                dataIndex: 'company'

            },

            {

                header   : 'Price',

                width    : 75,

                sortable : true,

                renderer : 'usMoney',

                dataIndex: 'price'

            },

            {

                header   : 'Change',

                width    : 75,

                sortable : true,

                renderer : change,

                dataIndex: 'change'

            },

            {

                header   : '% Change',

                width    : 75,

                sortable : true,

                renderer : pctChange,

                dataIndex: 'pctChange'

            },

            {

                header   : 'Last Updated',

                width    : 85,

                sortable : true,

                renderer : Ext.util.Format.dateRenderer('m/d/Y'),

                dataIndex: 'lastChange'

            },

            {

                xtype: 'actioncolumn',

                width: 50,

                items: [{

                    icon   : '../shared/icons/fam/delete.gif',  // Use a URL in the icon config

                    tooltip: 'Sell stock',

                    handler: function(grid, rowIndex, colIndex) {

                        var rec = store.getAt(rowIndex);

                        alert("Sell " + rec.get('company'));

                    }

                }, {

                    getClass: function(v, meta, rec) {          // Or return a class from a function

                        if (rec.get('change') < 0) {

                            this.items[1].tooltip = 'Do not buy!';

                            return 'alert-col';

                        } else {

                            this.items[1].tooltip = 'Buy stock';

                            return 'buy-col';

                        }

                    },

                    handler: function(grid, rowIndex, colIndex) {

                        var rec = store.getAt(rowIndex);

                        alert("Buy " + rec.get('company'));

                    }

                }]

            }

        ],

        stripeRows: true,

        autoExpandColumn: 'company',

        height: 350,

        width: 600,

        title: 'Array Grid',

        // config options for stateful behavior

        stateful: true,

        stateId: 'grid'

    });

 

    // render the grid to the specified div in the page

    grid.render('grid-example');

});

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