To load list items in child list dynamically, push the new list item data into the existing
dataSource using
the select event.
Refer to the following steps to load list item into the child list:
select event that
triggers selecting list item in the ListView component. By using the select event, you can push the new list item to the child
list of the data source on specifying its item index. Item index can be obtained from the
SelectEventArgs of the
select event.import * as React from 'react';
import * as ReactDOM from "react-dom";
import { ListViewComponent } from '@syncfusion/ej2-react-lists';
export default class App extends React.Component<{}, {}> {
// define the array of Json
private data: { [key: string]: Object }[] = [
{
id: "01",
text: "Music",
icon: "folder",
child: [{ id: "01-01", text: "Gouttes.mp3", icon: "file" }]
},
{
id: "02",
text: "Videos",
icon: "folder",
child: [
{ id: "02-01", text: "Naturals.mp4", icon: "file" },
{ id: "02-02", text: "Wild.mpeg", icon: "file" }
]
},
{
id: "03",
text: "Documents",
icon: "folder",
child: [
{ id: "03-01", text: "Environment Pollution.docx", icon: "file" },
{ id: "03-02", text: "Global Water, Sanitation, & Hygiene.docx", icon: "file" },
{ id: "03-03", text: "Global Warming.ppt", icon: "file" },
{ id: "03-04", text: "Social Network.pdf", icon: "file" },
{ id: "03-05", text: "Youth Empowerment.pdf", icon: "file" }
]
},
{
id: "04",
text: "Pictures",
icon: "folder",
child: [
{
id: "04-01",
text: "Camera Roll",
icon: "folder",
child: [
{ id: "04-01-01", text: "WIN_20160726_094117.JPG", icon: "file" },
{ id: "04-01-02", text: "WIN_20160726_094118.JPG", icon: "file" },
{ id: "04-01-03", text: "WIN_20160726_094119.JPG", icon: "file" }
]
},
{
id: "04-02",
text: "Wind.jpg",
icon: "file"
},
{
id: "04-02",
text: "Stone.jpg",
icon: "file"
},
{
id: "04-02",
text: "Home.jpg",
icon: "file"
},
{
id: "04-02",
text: "Bridge.png",
icon: "file"
}
]
},
{
id: "05",
text: "Downloads",
icon: "folder",
child: [
{ id: "05-01", text: "UI-Guide.pdf", icon: "file" },
{ id: "05-02", text: "Tutorials.zip", icon: "file" },
{ id: "05-03", text: "Game.exe", icon: "file" },
{ id: "05-04", text: "TypeScript.7z", icon: "file" }
]
}
];
private fields: { [key: string]: Object } = { iconCss: "icon", tooltip: "text" };
public onSelect(args: SelectEventArgs) {
(this.data[args.index].child as any[]).push({
id: "01-02",
text: "Newly Added File",
icon: "file",
htmlAttributes: { role: "li", class: "list" }
});
}
render() {
return (
<div>
<ListViewComponent
id="listview"
dataSource={this.data}
fields={this.fields}
headerTitle="Folders"
showIcon={true}
showHeader={true}
select={this.onSelect.bind(this) as any}
/>
</div>
);
}
}
ReactDOM.render(<App />, document.getElementById('element'));<!DOCTYPE html>
<html lang="en">
<head>
<title>Syncfusion React ListView</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Essential JS 2 for React Components" />
<meta name="author" content="Syncfusion" />
<link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet" />
<link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet" />
<link href="//cdn.syncfusion.com/ej2/ej2-react-lists/styles/material.css" rel="stylesheet" />
<link href="index.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
<script src="systemjs.config.js"></script>
<style>
#loader {
color: #008cff;
height: 40px;
left: 45%;
position: absolute;
top: 45%;
width: 30%;
}
</style>
</head>
<body>
<div id='element' style="margin:0 auto; max-width:400px;">
<div id='loader'>Loading....</div>
</div>
</body>
</html>#listview {
display: block;
max-width: 400px;
margin: auto;
border: 1px solid #dddddd;
border-radius: 3px;
}
#listview.e-listview .e-list-icon {
height: 24px;
width: 30px;
}
.folder, .file {
background: url('https://ej2.syncfusion.com/demos/src/listview/images/file_icons.png') no-repeat;
background-size: 300%;
}
.folder{
background-position: -5px -461px;
}
.file {
background-position: -5px -151px;
}
/* csslint ignore:start */
.list {
color:deeppink !important;
}import * as React from 'react';
import * as ReactDOM from "react-dom";
import { ListViewComponent } from '@syncfusion/ej2-react-lists';
export default class App extends React.Component {
constructor() {
super(...arguments);
// define the array of Json
this.data = [
{
id: "01",
text: "Music",
icon: "folder",
child: [{ id: "01-01", text: "Gouttes.mp3", icon: "file" }]
},
{
id: "02",
text: "Videos",
icon: "folder",
child: [
{ id: "02-01", text: "Naturals.mp4", icon: "file" },
{ id: "02-02", text: "Wild.mpeg", icon: "file" }
]
},
{
id: "03",
text: "Documents",
icon: "folder",
child: [
{ id: "03-01", text: "Environment Pollution.docx", icon: "file" },
{ id: "03-02", text: "Global Water, Sanitation, & Hygiene.docx", icon: "file" },
{ id: "03-03", text: "Global Warming.ppt", icon: "file" },
{ id: "03-04", text: "Social Network.pdf", icon: "file" },
{ id: "03-05", text: "Youth Empowerment.pdf", icon: "file" }
]
},
{
id: "04",
text: "Pictures",
icon: "folder",
child: [
{
id: "04-01",
text: "Camera Roll",
icon: "folder",
child: [
{ id: "04-01-01", text: "WIN_20160726_094117.JPG", icon: "file" },
{ id: "04-01-02", text: "WIN_20160726_094118.JPG", icon: "file" },
{ id: "04-01-03", text: "WIN_20160726_094119.JPG", icon: "file" }
]
},
{
id: "04-02",
text: "Wind.jpg",
icon: "file"
},
{
id: "04-02",
text: "Stone.jpg",
icon: "file"
},
{
id: "04-02",
text: "Home.jpg",
icon: "file"
},
{
id: "04-02",
text: "Bridge.png",
icon: "file"
}
]
},
{
id: "05",
text: "Downloads",
icon: "folder",
child: [
{ id: "05-01", text: "UI-Guide.pdf", icon: "file" },
{ id: "05-02", text: "Tutorials.zip", icon: "file" },
{ id: "05-03", text: "Game.exe", icon: "file" },
{ id: "05-04", text: "TypeScript.7z", icon: "file" }
]
}
];
this.fields = { iconCss: "icon", tooltip: "text" };
}
onSelect(args) {
this.data[args.index].child.push({
id: "01-02",
text: "Newly Added File",
icon: "file",
htmlAttributes: { role: "li", class: "list" }
});
}
render() {
return (<div>
<ListViewComponent id="listview" dataSource={this.data} fields={this.fields} headerTitle="Folders" showIcon={true} showHeader={true} select={this.onSelect.bind(this)}/>
</div>);
}
}
ReactDOM.render(<App />, document.getElementById('element'));