关于RowExpander插件详细说明

最新推荐文章于 2022-10-05 17:19:37 发布

hezhiwei37

最新推荐文章于 2022-10-05 17:19:37 发布

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分类专栏： ExtJs

本文链接：https://blog.youkuaiyun.com/hezhiwei37/article/details/8286605

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本文介绍了一个使用Ext JS框架实现的股票数据表格，该表格支持鼠标悬停时自动展开显示完整数据行，并提供了多选功能。通过自定义列渲染器，实现了价格变化和百分比变化的可视化展示，同时确保了Firefox环境下复制操作的兼容性。

如下图：

当鼠标移动到某一行时，该行自动展开(显示剩余的内容)，并可以复制展开的内容(firefox底下不能复制，各位有什么好的解决方法请告知我)。

代码如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>RowExpander插件的扩展应用</title>
	<script type="text/javascript" src="../ext-3.2.0/adapter/ext/ext-base.js"></script>
	<script type="text/javascript" src="../ext-3.2.0/ext-all.js"></script>
	<script type="text/javascript" src="../ext-3.2.0/ux/RowExpander.js"></script>
    <link rel="stylesheet" type="text/css" href="../ext-3.2.0/resources/css/ext-all.css"/>
	<script type="text/javascript">
		Ext.onReady(function(){
		
			// 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);
			
			//新建一个RowExpander对象
			var expander = new Ext.ux.grid.RowExpander({
		        tpl: new Ext.Template('<hr/><p>LastUpdate:{lastChange}</p>')
		    });
			
			//创建CheckboxSelectionModel
			var smAll=new Ext.grid.CheckboxSelectionModel({
				selectRow: function (index, keepExisting, preventViewNotify) {
		                    if (this.isLocked() || (index < 0 || index >= this.grid.store.getCount()) || (keepExisting && this.isSelected(index))) {
		                        return;
		                    }
		                    var r = this.grid.store.getAt(index);
		                    if (r && this.fireEvent('beforerowselect', this, index, keepExisting, r) !== false) {
		                        if (!keepExisting || this.singleSelect) {
		                            this.clearSelections();
		                        }
		                        this.selections.add(r);
		                        this.last = this.lastActive = index;
		                        if (!preventViewNotify) {
		                            this.grid.getView().onRowSelect(index);
		                        }
		                        this.fireEvent('rowselect', this, index, r);
		                        this.fireEvent('selectionchange', this);
		                    }
		                    expander.toggleRow(index);

		                }
				});
			
			// create the Grid
			var grid = new Ext.grid.GridPanel({
				id:'grid',
				plugins: expander,//这里为增加
				store: store,
				columns: [
					expander,
					smAll,
					{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'}
				],
				sm:smAll,//grid需加sm否则无法多选
				stripeRows: true,
				autoExpandColumn: 'company',
				height: 350,
				width: 600,
				title: 'Array Grid',
				// config options for stateful behavior
				stateful: true,
				stateId: 'grid'        
			});
			
			grid.on('mouseover', function (e) {
		        var index = grid.getView().findRowIndex(e.getTarget()); //根据mouse所在的target可以取到的位置
		        //alert(index);
		        if (index !== false) {//当取到了正确的列时，（因为如果传入的target列没有取到的时候会返回false）
		            if (Ext.fly(Ext.getCmp('grid').view.getRow(index)).hasClass('x-grid3-row-collapsed')) {
		                expander.expandRow(index);
		            }
		        }
		    });

		    grid.on('mouseout', function (e) {
		        var index = grid.getView().findRowIndex(e.getTarget());
		        //alert(index);
		        if (index != false) {

		            expander.collapseRow(index);

		        }
		        else {
		            expander.collapseRow(0);
		        }
		    });
			
			// render the grid to the specified div in the page
			grid.render('grid-example');
		});
	</script>
</head>

<body>
<div id="grid-example" align="center"></div>
</body>
</html>