ExtJs 3.x 以编程方式滚动 ListView

Question

下面的代码直接来自 3.x 示例。

谁能帮助我编写移动列表视图主体的脚本，就像它正在滚动一样？

谢谢， 乔什

Ext.onReady(function(){
    var store = new Ext.data.JsonStore({
        fields: ['name', 'url', {name:'size', type: 'float'}, {name:'lastmod', type:'date', dateFormat:'timestamp'}],
        data : [{"name":"dance_fever.jpg","size":2067,"lastmod":1265631056000,"url":"images\/thumbs\/dance_fever.jpg"}
                ,{"name":"gangster_zack.jpg","size":2115,"lastmod":1265631056000,"url":"images\/thumbs\/gangster_zack.jpg"}
                ,{"name":"kids_hug.jpg","size":2477,"lastmod":1265631056000,"url":"images\/thumbs\/kids_hug.jpg"}
                ,{"name":"kids_hug2.jpg","size":2476,"lastmod":1265631056000,"url":"images\/thumbs\/kids_hug2.jpg"}
                ,{"name":"sara_pink.jpg","size":2154,"lastmod":1265631056000,"url":"images\/thumbs\/sara_pink.jpg"}
                ,{"name":"sara_pumpkin.jpg","size":2588,"lastmod":1265631056000,"url":"images\/thumbs\/sara_pumpkin.jpg"}
                ,{"name":"sara_smile.jpg","size":2410,"lastmod":1265631056000,"url":"images\/thumbs\/sara_smile.jpg"}
                ,{"name":"up_to_something.jpg","size":2120,"lastmod":1265631056000,"url":"images\/thumbs\/up_to_something.jpg"}
                ,{"name":"zack.jpg","size":2901,"lastmod":1265631056000,"url":"images\/thumbs\/zack.jpg"}
                ,{"name":"zacks_grill.jpg","size":2825,"lastmod":1265631056000,"url":"images\/thumbs\/zacks_grill.jpg"}
                ,{"name":"zack_dress.jpg","size":2645,"lastmod":1265631056000,"url":"images\/thumbs\/zack_dress.jpg"}
                ,{"name":"zack_hat.jpg","size":2323,"lastmod":1265631056000,"url":"images\/thumbs\/zack_hat.jpg"}
                ,{"name":"zack_sink.jpg","size":2303,"lastmod":1265631056000,"url":"images\/thumbs\/zack_sink.jpg"}]
    });

    var listView = new Ext.list.ListView({
        id      : 'listview',
        store: store,
        multiSelect: true,
        emptyText: 'No images to display',
        columns: [{
            header: 'File',
            width: .45,
            dataIndex: 'name'
        },{
            header: 'Last Modified',
            xtype: 'datecolumn',
            format: 'm-d h:i a',
            width: .3, 
            dataIndex: 'lastmod'
        },{
            header: 'Size',
            dataIndex: 'size',
            tpl: '{size:fileSize}',
            align: 'right',
            cls: 'listview-filesize'
        }]
    });

    // put it in a Panel so it looks pretty
    var panel = new Ext.Panel({
        id:'images-view',
        width:425,
        height:250,
        collapsible:true,
        resizable : true,
        layout:'fit',
        title:'Simple ListView <i>(0 items selected)</i>',
        items: listView
    });
    panel.render(document.body);
});

Answer 1

下面的代码假设您希望将 listView 向下滚动 50 像素。

var listView = Ext.get('listView'); 
var listViewBody = listView.el.child('.x-list-body'); 
listViewBody.scroll('down', 50);