Enable or disable context menu items in Angular Context menu component

6 Sep 20224 minutes to read

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.

app.component.ts

import { Component, ViewChild } from '@angular/core';
import { ContextMenuComponent, MenuEventArgs, MenuItemModel } from '@syncfusion/ej2-angular-navigations';

@Component({
  selector: 'app-root',
  template: `<!--target element-->
            <div id="target">Right click / Touch hold to open the ContextMenu</div>
            <!-- To Render ContextMenu. -->
            <ejs-contextmenu #contextmenu target='#target' [items]='menuItems' (created)='onCreated()' (beforeOpen)='beforeOpen()'></ejs-contextmenu>`
})

export class AppComponent {

    @ViewChild('contextmenu')
    public contextmenu: ContextMenuComponent;

    // ContextMenu items definition
    public menuItems: MenuItemModel[] = [
    {
        text: 'View',
        items: [
          {
            text: 'Large icons'
          },
          {
            text: 'Medium icons'
          },
          {
            text: 'Small icons'
          }
        ]
    },
    {
        text: 'Sort By'
    },
    {
        text: 'Refresh'
    },
    {
        separator: true
    },
    {
        text: 'New'
    },
    {
        separator: true
    },
    {
        text: 'Display Settings'
    },
    {
        text: 'Personalize'
    }];

    onCreated(): void {
      this.contextmenu.enableItems(['Display Settings'], false);
    }

    beforeOpen(): void {
      this.contextmenu.enableItems(['Medium icons'], false);
    }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ContextMenuModule } from '@syncfusion/ej2-angular-navigations';
import { enableRipple } from '@syncfusion/ej2-base';

enableRipple(true);

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule,
        ContextMenuModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }

main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

To disable sub menu items, use the beforeOpen event.