我需要使用正确的组件来实现此https://imgur.com/a/P2VHX2i。我目前正在使用来自服务器的json数据查看TreeList示例(https://demos.telerik.com/kendo-ui/treelist/remote-data-binding)。您可以提供一些有关创建此树形列表的建议吗?
我曾经为您这样的类似情况进行过一次PoC。我用网格模拟了一个TreeList,它起作用了:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled</title>
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.3.917/styles/kendo.common.min.css">
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.3.917/styles/kendo.rtl.min.css">
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.3.917/styles/kendo.default.min.css">
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.3.917/styles/kendo.mobile.all.min.css">
<style type="text/css">
.item-level {
display: inline-block;
width: 10px;
}
.level-arrow-expanded:before {
content: "\00bb"
}
.level-arrow-collapsed:before {
content: "\00ab"
}
.item-cell {
cursor: pointer
}
td[role="gridcell"] {
padding: 0;
}
.cell-container {
display: inline-block;
padding-bottom: 6.4px;
padding-left: 9.6px;
padding-right: 9.6px;
padding-top: 6.4px;
box-sizing: border-box;
width: 100%;
}
.header-container {
padding: 0
}
.header-editable-cell {
color: #9cc3e5;
font-weight: bold
}
.k-grid tr:hover td .cell-container {
background-color: #bdb4af !important
}
</style>
<script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2019.3.917/js/angular.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2019.3.917/js/jszip.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2019.3.917/js/kendo.all.min.js"></script>
<script id="line-template" type="text/x-kendo-template">
<div class='cell-container'>
<div class='item-level #= (data.Level < 4 ? "level-arrow-" + (data.Collapsed ? "collapsed" : "expanded") : "") #'></div>
# for (let i = -1; i < (data.Level - 1); i++) { #
<div class='item-level level-space'></div>
# } #
#= data.Line #
</div>
</script>
<script>
$(function() {
const lineTemplate = $("#line-template").html();
let data = [];
let cols = [{
title: " ",
field: "Line",
locked: true,
width: 200,
template: lineTemplate,
attributes: { "class": "item-cell" }
}, {
title: "Customer Type",
field: "CustomerType",
width: 300
}];
for (var n = 0; n < 50000; n++) {
let level = (n % 5),
dataItem = {
Line: n,
CustomerType: (n % 2 == 0 ? "All" : "3rd Party"),
Level: level,
Show: true,
Index: n,
Collapsed: false
};
data.push(dataItem);
}
let grid = $("#grid").kendoGrid({
dataSource: {
data: data,
pageSize: 20,
filter: { field: "Show", operator: "eq", value: true }
},
height: 500,
columns: cols,
scrollable: {
virtual: true
}
}).data("kendoGrid");
grid.lockedTable.on("click", "td.item-cell", function() {
let data = grid.dataSource.data(),
dataItem = grid.dataItem($(this).closest("tr")),
item;
for (let i = 0, count = data.length; i < count; i++) {
item = data[i];
if (item.Index == dataItem.Index) {
dataItem.Collapsed = !dataItem.Collapsed;
}
else if (item.Index > dataItem.Index) {
if (dataItem.Index != i && item.Level == 0) {
break;
}
item.Show = !dataItem.Collapsed;
}
}
grid.dataSource.fetch();
});
});
</script>
</head>
<body>
<div id="grid"></div>
</body>
</html>
为什么我要这么做?要处理庞大的数据集,我不知道您的情况是否如此。如您所见,上面的TreeList显示了5万行虚拟化。问题在于TreeList不会虚拟化(check out it's docs),但是会虚拟化Grid does。
如何运作:
将第一列锁定为collpase / expand列。您也可以锁定更多列;
在您的dataItems(行的数据)中,您必须使用一些控件属性,它们是:Collapsed
,Level
,Show
和Index
。它们控制collpase / expand行为和分层显示。在网格初始化之前添加console.log(data)
以检查其填充方式;
Show
属性处理collpase /展开显示状态。一旦一行是Show = false
,它将被隐藏。之所以有效,是因为数据源中有一个过滤器:filter: { field: "Show", operator: "eq", value: true }
;
item-cell
类上的click事件管理该行的子级显示状态。该类将添加为第一列:attributes: { "class": "item-cell" }
。该事件将更改子行的Show
属性;
模板line-template
将显示正确的级别说明和collpase / expand列的箭头;