Header in popup items is possible in DropdownButton by templating entire popup with ListView. Create ListView
with id #listview
and provide it as a target
for DropDownButton.
In the following example, ListView element is given as target
to DropDownButton and header can be achieved
by groupBy
property.
ej.base.enableRipple(true);
var ddbOption = {
target: '#listview',
iconCss: 'e-icons e-down',
cssClass: 'e-caret-hide'
};
var drpDownBtn = new ej.splitbuttons.DropDownButton(ddbOption);
drpDownBtn.appendTo('#element');
var dataSource = [
{ class: 'data', text: 'Print', id: 'data1', category: 'Customize Quick Access Toolbar' },
{ class: 'data', text: 'Save As', id: 'data2', category: 'Customize Quick Access Toolbar' },
{ class: 'data', text: 'Update Folder', id: 'data3', category: 'Customize Quick Access Toolbar' },
{ class: 'data', text: 'Reply', id: 'data4', category: 'Customize Quick Access Toolbar' },
{ class: 'data', text: 'Reply All', id: 'data4', category: 'Customize Quick Access Toolbar' },
{ class: 'data', text: 'Forward', id: 'data4', category: 'Customize Quick Access Toolbar' },
{ class: 'data', text: 'Delete', id: 'data4', category: 'Customize Quick Access Toolbar' },
{ class: 'data', text: 'Undo', id: 'data4', category: 'Customize Quick Access Toolbar' },
];
//Initialize ListView component
var listviewInstance = new ej.lists.ListView({
dataSource: dataSource,
//map the appropriate columns to fields property
fields: { text: 'text', groupBy: 'category' },
showCheckBox: true
});
//Render initialized ListView
listviewInstance.appendTo("#listview");
<!DOCTYPE html><html lang="en"><head>
<title>EJ2 DropDownButton</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="Typescript UI Controls">
<meta name="author" content="Syncfusion">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-lists/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet">
<link href="styles.css" rel="stylesheet">
<script src="https://cdn.syncfusion.com/ej2/21.2.3/dist/ej2.min.js" type="text/javascript"></script>
</head>
<body>
<div id="container">
<button id="element"></button>
<div id="listview"></div>
</div>
<script>
var ele = document.getElementById('container');
if(ele) {
ele.style.visibility = "visible";
}
</script>
<script src="index.js" type="text/javascript"></script>
</body></html>
#container {
visibility: hidden;
}
#loader {
color: #008cff;
height: 40px;
left: 45%;
position: absolute;
top: 45%;
width: 30%;
}
.e-down::before {
content: '\e969';
}
#listview {
display: block;
max-width: 600px;
margin: auto;
border: 1px solid #dddddd;
border-radius: 3px;
}