Ext 实现grid之间的拖放（D&D between 2 grids） 【转】

Ext 提供了丰富的界面效果，其一便是拖动。我试着实现两个grid间的拖动。效果不错。

原理很简单，就是两个gird都设置支持拖拽的属性： enableDragDrop: true,   dropConfig: { appendOnly:true },  ddGroup: "GridDD2"

然后 new Ext.dd.DropTarget ，在其notifyDrop里面写拖动的处理函数。

话不多说，上代码！

HTML:

<html>
<head>
<title>dd 2 grids</title>

        <link rel="stylesheet" type="text/css" href="ext-2.0.2/resources/css/ext-all.css" /> 
        <script type="text/javascript" src="ext-2.0.2/adapter/ext/ext-base.js"></script> 
        <script type="text/javascript" src="ext-2.0.2/ext-all-debug.js"></script>
        <script type="text/javascript" src="mydd2grids.js"></script>
</head>
<body>
<div id="grid1-example"></div>
<div id="grid2-example"></div>
</body>
</html>

JAVASCRIPT(mydd2grids.js):

/*
 *  by Patrickchen 2008
 */

Ext.onReady(function(){

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

    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']
    ];

    // example of custom renderer function
    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;
    }

    // example of custom renderer function
    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.SimpleStore({
        fields: [
           {name: 'company'},
           {name: 'price', type: 'float'},
           {name: 'change', type: 'float'},
           {name: 'pctChange', type: 'float'},
           {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
        ]
    });
    store.loadData(myData);

    // create the Grid
    var grid1 = new Ext.grid.GridPanel({
        store: store,
        columns: [
            {id:'company',header: "Company",  160, sortable: true, dataIndex: 'company'},
            {header: "Price",  75, sortable: true, renderer: 'usMoney', dataIndex: 'price'},
            {header: "Change",  75, sortable: true, renderer: change, dataIndex: 'change'},
            {header: "% Change",  75, sortable: true, renderer: pctChange, dataIndex: 'pctChange'},
            {header: "Last Updated",  85, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
        ],
        stripeRows: true,
        autoExpandColumn: 'company',
        height:350,
        600,
        title:'Array Grid1',
        //most important as follow
        enableDragDrop: true,
        dropConfig: {
            appendOnly:true
        },
        ddGroup: "GridDD"
    });

    grid1.render('grid1-example');
    
    //grid2 -----
     var myData2 = [
        ['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']
    ];
     var store2 = new Ext.data.SimpleStore({
        fields: [
           {name: 'company'},
           {name: 'price', type: 'float'},
           {name: 'change', type: 'float'},
           {name: 'pctChange', type: 'float'},
           {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
        ]
    });
    store2.loadData(myData2);
    
     var grid2 = new Ext.grid.GridPanel({
        store: store2,
        columns: [
            {id:'company',header: "Company",  160, sortable: true, dataIndex: 'company'},
            {header: "Price",  75, sortable: true, renderer: 'usMoney', dataIndex: 'price'},
            {header: "Change",  75, sortable: true, renderer: change, dataIndex: 'change'},
            {header: "% Change",  75, sortable: true, renderer: pctChange, dataIndex: 'pctChange'},
            {header: "Last Updated",  85, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
        ],
        stripeRows: true,
        autoExpandColumn: 'company',
        height:350,
        600,
        title:'Array Grid2',
        //most important as follow
        enableDragDrop: true,
        dropConfig: {
            appendOnly:true
        },
        ddGroup: "GridDD2"
    });

    grid2.render('grid2-example');
    
    //grid1->grid2
    //this is a grid DragDrop
    var ddrow = new Ext.dd.DropTarget(grid2.getEl(), {
        ddGroup: "GridDD",  // Data come from
        // copy:true,
        notifyDrop : function(dd, e, data){
            var rows=grid1.getSelectionModel().getSelections();
            var count = rows.length;
            var cindex=dd.getDragData(e).rowIndex;
            var array=[];
            for(var i=0;i<count;i++){
                var index = cindex+i;
                array.push(index);
            }
            
            store2.insert(cindex,data.selections); //在grid2中新增拖动列
            grid2.getView().refresh(); 
            grid2.getSelectionModel().selectRows(array); //选中拖动过来的列
        }
    });

原文地址：http://www.cnblogs.com/patrickchen/archive/2008/10/29/1322025.html

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原文地址：https://www.cnblogs.com/myssh/p/1736106.html