Initialize the Sidebar with TreeView
17 Feb 202224 minutes to read
The following example demonstrates how to render TreeView component inside the Sidebar with dock state and how to achieve expand and collapse the functionalities simultaneously in the sidebar and Treeview.
On collapse, the LI elements of TreeView show icons only to represent the short sign of the hidden text content. On expand, hidden text content will be set to be visible.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>@ViewData["Title"] - layout_treeview</title>
<!-- Syncfusion Essential JS 2 Styles -->
<link rel="stylesheet" href="https://cdn.syncfusion.com/ej2/material.css" />
<!-- Syncfusion Essential JS 2 Scripts -->
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js"></script>
<environment include="Development">
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.css" />
<link rel="stylesheet" href="~/css/site.css" />
</environment>
<environment exclude="Development">
<link rel="stylesheet" href="https://ajax.aspnetcdn.com/ajax/bootstrap/3.3.7/css/bootstrap.min.css"
asp-fallback-href="~/lib/bootstrap/dist/css/bootstrap.min.css"
asp-fallback-test-class="sr-only" asp-fallback-test-property="position" asp-fallback-test-value="absolute" />
<link rel="stylesheet" href="~/css/site.min.css" asp-append-version="true" />
</environment>
</head>
<body>
<div class="main-header" id="header-section">
<ul class="header-list">
<li class="float-left header-style icon-menu" id="hamburger"></li>
<li class="float-left header-style nav-pane"><b>Navigation Pane</b></li>
<li class="header-style float-right support border-left"><b>Support</b></li>
</ul>
</div>
<!-- end of header-section -->
<!-- sidebar element declaration -->
<ejs-sidebar id="sidebar-treeview" width="290px" target=".main-content" enableDock="true" dockSize="44px" mediaQuery='(min-width: 600px)' close="onClose">
<e-content-template>
<div class="main-menu">
<div>
<ejs-treeview id="main-treeview" expandOn="Click" >
<e-treeview-fields dataSource="ViewBag.dataSource" id="nodeId" text="nodeText" hasChildren="hasChild" iconCss="iconCss"></e-treeview-fields>
</ejs-treeview>
</div>
</div>
</e-content-template>
</ejs-sidebar>
<div id="body_content" class="maincontent">
<div>
@RenderBody()
</div>
</div>
<environment include="Development">
<script src="~/lib/jquery/dist/jquery.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.js"></script>
<script src="~/js/site.js" asp-append-version="true"></script>
</environment>
<environment exclude="Development">
<script src="https://ajax.aspnetcdn.com/ajax/jquery/jquery-2.2.0.min.js"
asp-fallback-src="~/lib/jquery/dist/jquery.min.js"
asp-fallback-test="window.jQuery"
crossorigin="anonymous"
integrity="sha384-K+ctZQ+LL8q6tP7I94W+qzQsfRV2a+AfHIi9k8z8l9ggpc8X+Ytst4yBo/hH+8Fk">
</script>
<script src="https://ajax.aspnetcdn.com/ajax/bootstrap/3.3.7/bootstrap.min.js"
asp-fallback-src="~/lib/bootstrap/dist/js/bootstrap.min.js"
asp-fallback-test="window.jQuery && window.jQuery.fn && window.jQuery.fn.modal"
crossorigin="anonymous"
integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa">
</script>
<script src="~/js/site.min.js" asp-append-version="true"></script>
</environment>
<script>
document.addEventListener('DOMContentLoaded', function () {
var sidebarTreeview = document.getElementById("sidebar-treeview").ej2_instances[0];
var treeviewObj = document.getElementById("main-treeview").ej2_instances[0];
// Toggle the Sidebar
document.getElementById('hamburger').onclick = function () {
if (sidebarTreeview.isOpen) {
sidebarTreeview.hide();
treeviewObj.collapseAll();
}
else {
sidebarTreeview.show();
treeviewObj.expandAll();
}
}
});
function onClose() {
var treeviewObj = document.getElementById("main-treeview").ej2_instances[0];
treeviewObj.collapseAll();
}
</script>
<ejs-scripts></ejs-scripts>
@RenderSection("Scripts", required: false)
<style>
/* header-section styles */
#header-section.main-header {
border-bottom: 1px solid #d2d6de;
height: 55px;
min-height: 55px;
max-height: 55px;
background: #1c86c8;
color: #fff;
}
#header-section .header-style {
line-height: 40px;
height: 55px;
padding: 8px;
list-style: none;
text-align: center;
font-size: 18px;
}
#header-section .border-left {
border-left: 1px solid #d2d6de;
width: 10em;
}
#header-section .float-left {
float: left;
padding-right: 0px;
}
#header-section .icon-menu {
width: 40px;
cursor: pointer;
}
/*end of header-section styles */
#sidebar-treeview {
border-left: 0.5px solid #80808070;
border-bottom: 0.5px solid #80808070;
}
/*main-menu-header styles */
#sidebar-treeview .main-menu .main-menu-header {
color: #656a70;
padding: 15px;
font-size: 14px;
width: 13em;
margin: 0;
}
/*end of main-menu-header styles */
/*text input styles */
#sidebar-treeview .main-menu .search-icon {
text-indent: 10px;
height: 30px;
width: 19em;
}
/*end of text input styles */
/* table of content area styles */
#sidebar-treeview .table-content {
padding: 20px;
height: 8em;
}
/* end of table ofcontent area styles */
/* content area styles */
#main-text.main-content {
overflow: hidden;
}
#main-text .sidebar-content .line {
width: 100%;
height: 1px;
border-bottom: 1px dashed #ddd;
margin: 40px 0;
}
#main-text .sidebar-content {
padding: 15px;
}
#main-text .sidebar-heading {
color: #1c86c8;
margin: 40px 0;
padding: 2px;
}
#main-text .paragraph-content {
font-family: 'Poppins', sans-serif;
padding: 5px;
font-weight: 300;
color: grey;
}
/* end of content area styles */
/* end of body and html styles */
/* icon styles */
@@font-face {
font-family: 'fontello';
src: 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format('truetype');
}
#sidebar-treeview #main-treeview .icon {
font-family: 'fontello';
font-size: 16px;
margin-top: -4px;
}
#header-section.main-header .icon-menu::before {
content: '\e801';
font-family: 'fontello';
font-size: 27px;
}
#sidebar-treeview #main-treeview .icon-microchip::before {
content: '\e806';
}
#sidebar-treeview #main-treeview .icon-thumbs-up-alt::before {
content: '\e805';
}
#sidebar-treeview #main-treeview .icon-docs::before {
content: '\e802';
}
#sidebar-treeview #main-treeview .icon-th::before {
content: '\e803';
}
#sidebar-treeview #main-treeview .icon-code::before {
content: '\e804';
}
#sidebar-treeview #main-treeview .icon-chrome::before {
content: '\e807';
}
#sidebar-treeview #main-treeview .icon-up-hand::before {
content: '\e810';
}
#sidebar-treeview #main-treeview .icon-bookmark-empty::before {
content: '\e811';
}
#sidebar-treeview #main-treeview .icon-help-circled::before {
content: '\e813';
}
#sidebar-treeview #main-treeview .icon-doc-text::before {
content: '\e812';
}
#sidebar-treeview #main-treeview .icon-circle-thin::before {
content: '\e808';
}
#header-section .header-list, #sidebar-treeview .e-treeview, #sidebar-treeview .e-treeview .e-ul {
padding: 0;
margin: 0;
overflow: hidden;
}
.e-content-animation {
border-right: 0.5px solid #80808070;
border-bottom: 0.5px solid #80808070;
}
body {
padding: 0px;
}
.e-sidebar.e-open #main-treeview .e-text-content {
padding: 0 0 0 24px;
}
.e-sidebar.e-close #main-treeview .e-text-content {
padding: 0 0 0 8.5px;
}
#main-treeview ul {
overflow: inherit;
}
/* end of icon styles */
</style>
</body>
</html><div class="main-content" id="main-text">
<div class="sidebar-content">
<h2 class="sidebar-heading"> Responsive Sidebar With Treeview</h2>
<p class="paragraph-content">
This is a graphical aid for visualising and categorising the site, in the style of an expandable and
collapsable treeview component. It auto-expands to display the node(s), if any, corresponding to the currently
viewed title, highlighting that node(s) and its ancestors. Load-on-demand when expanding nodes is available
where supported (most graphical browsers), falling back to a full-page reload. MediaWiki-supported caching,
aside from squid, has been considered so that unnecessary re-downloads of content are avoided where possible.
The complete expanded/collapsed state of the treeview persists across page views in most situations.
</p>
<div class="line"></div>
<h2 class="sidebar-heading">Lorem Ipsum Dolor</h2>
<p class="paragraph-content">
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis
nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure
dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
</p>
<div class="line"></div>
<h2 class="sidebar-heading"> Lorem Ipsum Dolor</h2>
<p class="paragraph-content">
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud
exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in
reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint
occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
</p>
</div>
</div>Output be like the below in Expanded state.
Output be like the below in Collapsed state.
