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Enable or disable context menu items in React Context Menu component

You can enable and disable the menu items using the enableItems method in ContextMenu. To enable menuItems, set the enable property in argument to true and vice-versa.

In the following example, the Display Settings in parent items and Medium icons in sub menu items are disabled.

Source
Preview
index.tsx
index.html
index.css
index.jsx
import { enableRipple } from '@syncfusion/ej2-base';
import { ContextMenuComponent, MenuItemModel } from '@syncfusion/ej2-react-navigations';
import * as React from 'react';
import * as ReactDom from 'react-dom';

enableRipple(true);

class App extends React.Component {
    public cMenu: ContextMenuComponent;
    private menuItems: MenuItemModel[] = [
        {
            items: [
                { text: 'Large icons' },
                { text: 'Medium icons' },
                { text: 'Small icons' }
            ],
            text: 'View'
        },
        {
            text: 'Sort By'
        },
        {
            text: 'Refresh'
        },
        {
            separator: true
        },
        {
            text: 'New'
        },
        {
            separator: true
        },
        {
            text: 'Display Settings'
        },
        {
            text: 'Personalize'
        }
    ];
    constructor(props: any) {
        super(props);
        this.created = this.created.bind(this);
        this.beforeOpen = this.beforeOpen.bind(this);
    }
    public render() {
        return (
            <div className="container">
                <div id='target'>Right click / Touch hold to open the ContextMenu</div>
                <ContextMenuComponent id="cmenu" ref={(scope) => this.cMenu = scope as ContextMenuComponent} target='#target' items={this.menuItems} created={this.created} beforeOpen={this.beforeOpen} />
            </div>
        );
    }
    private created() {
        this.cMenu.enableItems(['Display Settings'], false);
    };
    private beforeOpen() {
        this.cMenu.enableItems(['Medium icons'], false);
    };
}

ReactDom.render(<App />,document.getElementById('element'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React ContextMenu</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-lists/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/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>
</head>

<body>
    <div id='element'>
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>
#loader {
	color: #008cff;
	height: 40px;
	left: 45%;
	position: absolute;
	top: 45%;
	width: 30%;
}

#target {
	border: 1px dashed;
	height: 150px;
	padding: 10px;
	position: relative;
	text-align: justify;
	color: gray;
	user-select: none;
}
import { enableRipple } from '@syncfusion/ej2-base';
import { ContextMenuComponent } from '@syncfusion/ej2-react-navigations';
import * as React from 'react';
import * as ReactDom from 'react-dom';
enableRipple(true);
class App extends React.Component {
    constructor(props) {
        super(props);
        this.menuItems = [
            {
                items: [
                    { text: 'Large icons' },
                    { text: 'Medium icons' },
                    { text: 'Small icons' }
                ],
                text: 'View'
            },
            {
                text: 'Sort By'
            },
            {
                text: 'Refresh'
            },
            {
                separator: true
            },
            {
                text: 'New'
            },
            {
                separator: true
            },
            {
                text: 'Display Settings'
            },
            {
                text: 'Personalize'
            }
        ];
        this.created = this.created.bind(this);
        this.beforeOpen = this.beforeOpen.bind(this);
    }
    render() {
        return (<div className="container">
                <div id='target'>Right click / Touch hold to open the ContextMenu</div>
                <ContextMenuComponent id="cmenu" ref={(scope) => this.cMenu = scope} target='#target' items={this.menuItems} created={this.created} beforeOpen={this.beforeOpen}/>
            </div>);
    }
    created() {
        this.cMenu.enableItems(['Display Settings'], false);
    }
    ;
    beforeOpen() {
        this.cMenu.enableItems(['Medium icons'], false);
    }
    ;
}
ReactDom.render(<App />, document.getElementById('element'));

To disable sub menu items, use the beforeOpen event.