Ext 实现grid之间的拖放（D&D between 2 grids）

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 " , 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 ' }
        ],
        stripeRows:  true ,
        autoExpandColumn:  ' company ' ,
        height: 350 ,
        width: 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 " , 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 ' }
        ],
        stripeRows:  true ,
        autoExpandColumn:  ' company ' ,
        height: 350 ,
        width: 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
        }
    });
});