Question

如何给锁定第一列的Grid加上checkbox

Answer 1

/*!
 * Ext JS Library 3.2.1
 * Copyright(c) 2006-2010 Ext JS, Inc.
 * licensing@extjs.com
 * http://www.extjs.com/license
 */
Ext.onReady(function(){
 
    // 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'}
        ],
        data: myData
    });
 
    var sm = new Ext.grid.CheckboxSelectionModel({
                                header: "",
                                handleMouseDown: function(g, rowIndex, e) {
                                    if (e.button !== 0 || this.isLocked()) {
                                        return;
                                    }
                                    var view = this.grid.getView();
                                    if (e.shiftKey && !this.singleSelect && this.last !== false) {
                                        var last = this.last;
                                        this.selectRange(last, rowIndex, e.ctrlKey);
                                        this.last = last;
                                        view.focusRow(rowIndex);
                                    } else {
                                        var isSelected = this.isSelected(rowIndex);
                                        if (isSelected) {
                                            this.deselectRow(rowIndex);
                                        } else if (!isSelected || this.getCount() > 1) {
                                            this.selectRow(rowIndex, true);
                                            view.focusRow(rowIndex);
                                        }
                                    }
                                },
                                isLocked: Ext.emptyFn,
                                initEvents: function() {
                                    Ext.grid.CheckboxSelectionModel.superclass.initEvents.call(this);
                                    this.grid.on('render', function() {
                                        var view = this.grid.getView();
                                        view.mainBody.on('mousedown', this.onMouseDown, this);
                                        Ext.fly(view.lockedInnerHd).on('mousedown', this.onHdMouseDown, this);
                                    }, this);
                                }
                            });
 
    sm.lock();
    // create the Grid
    // To use locking functionality we must explicitly specify the LockingColumnModel and the LockingGridView
    var grid = new Ext.grid.GridPanel({
        store: store,
        sm: sm,
        colModel: new Ext.ux.grid.LockingColumnModel([
            sm,
            {header: 'Company',      width: 160, sortable: true, dataIndex: 'company', locked: true, id:'company'},
            {header: 'Price',        width: 85,  sortable: true, renderer: 'usMoney',  dataIndex: 'price'},
            {header: 'Change',       width: 85,  sortable: true, renderer: change,     dataIndex: 'change'},
            {header: '% Change',     width: 85,  sortable: true, renderer: pctChange,  dataIndex: 'pctChange'},
            {header: 'Last Updated', width: 95,  sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
        ]),
        stripeRows: true,
        height: 350,
        width: 500,
        title: 'Locking Array Grid',
        view: new Ext.ux.grid.LockingGridView()
    });
     
    // render the grid to the specified div in the page
    grid.render('grid-example');
});