作为一名设计师，我非常喜欢在没有数据可显示时发出漂亮的“空状态”消息的概念，它鼓励用户采取行动。（其实 tumblr 有一整篇博客专门介绍这个：http ://emptystat.es/ ）
作为 Flexigrid 的一个快乐和忠诚的用户，我希望能够在我正在构建的系统没有任何搜索结果显示在网格中时能够替换一个空状态消息（例如“你没有待处理的请求! 单击新建开始。”）。理想情况下，这样的空状态消息应该是图形的并且比单独的行大，并且会替换网格的全部内容。当没有返回行时，任何人都可以就我如何用图形空状态消息替换 flexigrid 的内容提供一些建议吗？
谢谢！
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Flexigrid</title>
<link rel="stylesheet" type="text/css" href="../css/flexigrid.css">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript" src="../js/flexigrid.js"></script>
</head>
<body>
<p>This is a sample implementation attached to a form, to add additional parameters.</p>
<form id="sform">
<p>
The values you entered will be place in name column for demo's sake.<br />
Value 1 : <input type="text" name="val1" value="" autocomplete="off" /><br />
Value 2 : Is a hidden input with value 3<input type="hidden" name="val2" value="3" /><br />
Value 3 :
<select name="val3">
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
<option value="4">Four</option>
<option value="5">Five</option>
</select><br />
Value 4 : <input type="checkbox" name="val4" id="val4" value="4" /><label for="val4">This will pass a value 4 if checked</label>
</p>
<p>
<input type="submit" value="Submit" />
</p>
</form>
<button onclick=hide()>HIDE</button>
<button onclick=show()>SHOW</button>
<table id="empty1" style="display:none">
<tr><td><b>Please</b> <u>fill some</u> data</td></tr>
</table>
<table id="flex1" style="display:block">
<tr><td>1</td></tr>
<tr><td>2</td></tr>
<tr><td>3</td></tr>
</table>
<script type="text/javascript">
var old = undefined
function hide() {
if (old == undefined) {
old = flex1.innerHTML
flex1.innerHTML = empty1.innerHTML
}
}
function show() {
if (old != undefined) {
flex1.innerHTML = old
old = undefined
}
}
$("#flex1").flexigrid({
url: 'post2.php',
dataType: 'json',
colModel : [
{display: 'ISO', name : 'iso', width : 40, sortable : true, align: 'center'},
{display: 'Name', name : 'name', width : 180, sortable : true, align: 'left'},
{display: 'Printable Name', name : 'printable_name', width : 120, sortable : true, align: 'left'},
{display: 'ISO3', name : 'iso3', width : 130, sortable : true, align: 'left', hide: true},
{display: 'Number Code', name : 'numcode', width : 80, sortable : true, align: 'right'}
],
searchitems : [
{display: 'ISO', name : 'iso'},
{display: 'Name', name : 'name', isdefault: true}
],
sortname: "iso",
sortorder: "asc",
usepager: true,
title: 'Countries',
useRp: true,
rp: 15,
showTableToggleBtn: true,
width: 700,
onSubmit: addFormData,
height: 200
});
//This function adds paramaters to the post of flexigrid. You can add a verification as well by return to false if you don't want flexigrid to submit
function addFormData(){
//passing a form object to serializeArray will get the valid data from all the objects, but, if the you pass a non-form object, you have to specify the input elements that the data will come from
var dt = $('#sform').serializeArray();
$("#flex1").flexOptions({params: dt});
return true;
}
$('#sform').submit(function (){
$('#flex1').flexOptions({newp: 1}).flexReload();
return false;
});
</script>
</body>
</html>
我使用 dojo 解决了这个问题，因为我们已经在我们的站点中使用了这个框架。我确信在不同的库中有类似的解决方案。本质上，我创建了一个新类，在创建 flexigrid 之后，它会注意到 flexigrid 中是否没有数据，如果指定了一个，则将背景图像放入表中：
dojo.provide("app.components.EmptyStateFlexigrid");
dojo.require("dijit._Widget");
// Provides a custom Flexigrid with an empty-state
dojo.declare("app.components.EmptyStateFlexigrid", [dijit._Widget], {
emptyStateUrl: null,
id: null,
url: null,
colModel: null,
buttons: null,
sortField: null,
sortOrder: null,
height: null,
usePager: null,
resizable: null,
// Create the flexigrid object
makeGrid: function() {
var gridObj = $('#' + this.id + "_flexigrid");
gridObj.flexigrid({
url: this.url,
dataType : 'json',
colModel : this.colModel,
buttons : this.buttons,
sortname : this.sortField,
sortorder : this.sortOrder,
height: this.height,
usepager : this.usePager,
resizable: this.resizable,
onSuccess: this.checkEmptyState,
useRp : true,
rpOptions: [2, 10, 15, 20, 30, 50],
rp : 15,
showTableToggleBtn : false
});
}
},
// EMPTY-STATE: make a nice graphic here if there is no data
// Note that "this" is a flexigrid object
checkEmptyState: function() {
var self = dijit.byId(this.id);
var gridObj = $('#' + this.id + "_flexigrid");
if (gridObj[0].id === this.id + '_flexigrid') {
var gridChildren = gridObj.children();
if (gridChildren.length === 0) {
var gblocks = $(".gBlock");
for (var i = 0; i < gblocks.length; i++) {
var styleObj = gblocks[i].style;
// The only way I could find to identify "our" flexigrid (if there is
// more than one on the page) is to test to see if the height is the
// same as our height. Kind of a lousy hack, but the best I could figure
// out. -pbanka
if (styleObj.height == self.height + 'px') {
styleObj.backgroundSize = "450px";
styleObj.backgroundRepeat = "no-repeat";
styleObj.backgroundImage = "url('" + self.emptyStateUrl + "')";
}
}
}
}
},