【发布时间】：2021-09-13 17:41:45
【问题描述】：
我想在 jquery 的 kendo treeview / ui 中将复选框模式设为单一。
但是 jquery 没有官方选项。我找到了扫描所有树视图并一一取消选中其他树视图的解决方案。但这给我带来了麻烦，因为我的树视图中有 3-4 个深度和 +500 多个项目。当我第二次选择时，大约需要 1-2 秒并冻结所有树视图一段时间。 这是我使用的虚拟解决方案的演示。但对于我的实际树视图来说，它并不平滑。
<!DOCTYPE html>
<html>
<head>
<base href="https://demos.telerik.com/kendo-ui/treeview/index">
<style>html { font-size: 14px; font-family: Arial, Helvetica, sans-serif; }</style>
<title></title>
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2021.2.616/styles/kendo.default-v2.min.css" />
<script src="https://kendo.cdn.telerik.com/2021.2.616/js/jquery.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2021.2.616/js/kendo.all.min.js"></script>
</head>
<body>
<div id="example">
<div class="demo-section wide k-content">
<div id="demo-section-title" class="treeview-flex">
<div>
<h3>
Select nodes, folders and drag them between the TreeViews
</h3>
</div>
</div>
<div class="treeview-flex">
<div id="treeview-kendo"></div>
</div>
<div class="treeview-flex">
<div>
<h4>Drag and Drop</h4>
</div>
</div>
<div class="treeview-flex">
<div id="treeview-telerik"></div>
</div>
</div>
<script id="treeview" type="text/kendo-ui-template">
# if (!item.items && item.spriteCssClass) { #
#: item.text #
<span class='k-icon k-i-close kendo-icon'></span>
# } else if(!item.items && !item.spriteCssClass) { #
<span class="k-sprite pdf"></span>
#: item.text #
<span class='k-icon k-i-close telerik-icon'></span>
# } else if (item.items && item.spriteCssClass){ #
#: item.text #
# } else { #
<span class="k-sprite folder"></span>
#: item.text #
# } #
</script>
<script>
function traverse(nodes, callback) {
for (var i = 0; i < nodes.length; i++) {
var node = nodes[i];
var children = node.hasChildren && node.children.data();
callback(node);
if (children) {
traverse(children, callback);
}
}
}
function onCheck(e) {
var dataItem = this.dataItem(e.node);
var rootNodes = $("#treeview-kendo").getKendoTreeView().dataSource.data();
traverse(rootNodes, function(node) {
if (node != dataItem) {
node.set("checked", false);
}
});
}
$("#treeview-kendo").kendoTreeView({
template: kendo.template($("#treeview").html()),
dataSource: [{
id: 1, text: "My Documents", expanded: true, spriteCssClass: "rootfolder", items: [
{
id: 2, text: "Kendo UI Project", expanded: true, spriteCssClass: "folder", items: [
{ id: 3, text: "about.html", spriteCssClass: "html" },
{ id: 4, text: "index.html", spriteCssClass: "html" },
{ id: 5, text: "logo.png", spriteCssClass: "image" }
]
},
{
id: 6, text: "Reports", expanded: true, spriteCssClass: "folder", items: [
{ id: 7, text: "February.pdf", spriteCssClass: "pdf" },
{ id: 8, text: "March.pdf", spriteCssClass: "pdf" },
{ id: 9, text: "April.pdf", spriteCssClass: "pdf" }
]
}
]
}],
//dragAndDrop: true,
checkboxes: {
checkChildren: true
},
check: onCheck,
loadOnDemand: true
});
</script>
<style>
@media screen and (max-width: 680px) {
.treeview-flex {
flex: auto !important;
width: 100%;
}
}
#demo-section-title h3 {
margin-bottom: 2em;
text-align: center;
}
.treeview-flex h4 {
color: #656565;
margin-bottom: 1em;
text-align: center;
}
#demo-section-title {
width: 100%;
flex: auto;
}
.treeview-flex {
flex: 1;
-ms-flex: 1 0 auto;
}
.k-treeview {
max-width: 240px;
margin: 0 auto;
}
#treeview-kendo .k-sprite {
background-image: url("../content/web/treeview/coloricons-sprite.png");
}
#treeview-telerik .k-sprite {
background-image: url("../content/web/treeview/coloricons-sprite.png");
}
.demo-section {
margin-bottom: 5px;
overflow: auto;
display: flex;
justify-content: space-between;
flex-wrap: wrap;
}
.rootfolder {
background-position: 0 0;
}
.folder {
background-position: 0 -16px;
}
.pdf {
background-position: 0 -32px;
}
.html {
background-position: 0 -48px;
}
.image {
background-position: 0 -64px;
}
</style>
</div>
</body>
</html>
Angular 有一个选项模式：“single”。 single mode checkbox for treeview in kendo ui for Angular
但我正在为 Jquery 寻找相同的剑道 ui。
【问题讨论】：
-
您在每次
traverse调用时都传递了function(node)回调。你试过不通过吗？也许不通过它会使它更快一点。
标签： kendo-ui