Implementing Syncfusion Angular ContextMenu
The ContextMenu is a graphical user interface that appears when users right-click or perform touch-hold actions. It provides a context-aware menu with support for nested items, dynamic updates, animations, custom templates, and comprehensive event handling. This skill guides you through implementing, configuring, and customizing context menus for Angular applications.
When to Use This Skill
Use this skill when:
- You need to create a right-click or touch-hold context menu
- Managing menu items dynamically (add, remove, enable, disable)
- Handling menu item click events and actions
- Opening dialogs or navigating from menu selections
- Customizing menu appearance with animations, icons, or themes
- Showing/hiding items based on context or user permissions
- Binding menu items from data sources
- Creating complex menu templates or nested structures
- Implementing responsive menus with scrolling
- Adding keyboard shortcuts or accessibility features
Component Overview
The ContextMenu component enables intuitive right-click interfaces with:
- ✅ Dynamic item management (add/remove/enable/disable)
- ✅ Multi-level nested menus
- ✅ Data binding from arrays or objects
- ✅ Customizable animations (FadeIn, SlideDown, ZoomIn, None)
- ✅ Template support for rich content (icons, HTML, tables)
- ✅ Event handling (click, open, close)
- ✅ Icon and URL navigation
- ✅ Scrollable menus for large item lists
- ✅ Accessibility with keyboard support
Documentation and Navigation Guide
Getting Started
📄 Read: references/getting-started.md
- Package installation and dependencies
- Angular environment setup (standalone architecture)
- Creating your first ContextMenu
- Configuring target elements
- Basic menu item structure
Menu Items Management
📄 Read: references/menu-items-management.md
- Adding menu items dynamically (insertBefore, insertAfter)
- Removing menu items (removeItems method)
- Enabling and disabling items (enableItems)
- Showing and hiding items (showItems, hideItems)
- Dynamic context-aware menus
- Multi-level nested menus
Data Binding
📄 Read: references/data-binding.md
- Populating items from data sources
- MenuItemModel structure and properties
- Parent-child item relationships
- beforeItemRender event for item formatting
- Dynamic data updates
Interaction & Events
📄 Read: references/interaction-and-events.md
- Menu item click handlers (select event)
- Click-to-open submenus (showItemOnClick)
- Programmatic open and close methods
- Menu positioning with coordinates
- Opening dialogs on item selection
- MenuEventArgs and event properties
Styling & Customization
📄 Read: references/styling-and-customization.md
- Animation settings and effects (FadeIn, SlideDown, ZoomIn, None)
- CSS customization and class targeting
- Icon styling with iconCss property
- URL navigation and external links
- Scrollable menus (enableScrolling)
- Responsive design and Theme Studio
Templates & Advanced Features
📄 Read: references/templates-and-advanced.md
- Custom item templates (itemTemplate)
- Rich content with HTML and tables
- Character underlining and formatting
- Separator items and grouping
- Accessibility and keyboard navigation
- Advanced template patterns
Quick Start Example
typescript
import { Component } from '@angular/core';
import { ContextMenuModule } from '@syncfusion/ej2-angular-navigations';
import { MenuItemModel } from '@syncfusion/ej2-navigations';
@Component({
selector: 'app-root',
standalone: true,
imports: [ContextMenuModule],
template: `
<div class="e-section-control">
<!-- Target element for context menu -->
<div id="target">Right click / Touch hold to open the ContextMenu</div>
<!-- ContextMenu component -->
<ejs-contextmenu
id='contextmenu'
target='#target'
[items]='menuItems'>
</ejs-contextmenu>
</div>
`
})
export class AppComponent {
public menuItems: MenuItemModel[] = [
{ text: 'Cut', iconCss: 'e-cm-icons e-cut' },
{ text: 'Copy', iconCss: 'e-cm-icons e-copy' },
{ text: 'Paste', iconCss: 'e-cm-icons e-paste' },
{ separator: true },
{
text: 'View',
items: [
{ text: 'Large icons' },
{ text: 'Small icons' }
]
}
];
}
Common Patterns
Pattern 1: Dynamic Item Management
typescript
// Add items after 'Refresh'
this.contextmenu.insertAfter([{ text: 'Sort By' }], 'Refresh');
// Remove 'Paste' item
this.contextmenu.removeItems(['Paste']);
// Disable 'Edit' item
this.contextmenu.enableItems(['Edit'], false);
Pattern 2: Context-Aware Menus
typescript
beforeOpen(args: BeforeOpenCloseMenuEventArgs) {
if ((args.event.target as HTMLElement).id === 'editor') {
this.contextmenu.showItems(['Add', 'Edit', 'Delete']);
this.contextmenu.hideItems(['Cut', 'Copy', 'Paste']);
}
}
Pattern 3: Menu Item Click Handler
typescript
itemSelect(args: MenuEventArgs): void {
if (args.item.text === 'Save As...') {
this.dialogComponent.show();
}
}
Pattern 4: Animation Configuration
typescript
public animationSettings = {
effect: 'FadeIn',
duration: 400,
easing: 'ease'
};
Complete API Reference
Component Properties
Core Configuration Properties
| Property | Type | Default | Description |
|---|
| | | Required. Specifies target element selector in which the ContextMenu should be opened. |
| | | Specifies menu items with its properties which will be rendered as ContextMenu. |
| | | Specifies whether to show the sub menu or not on click. When , the sub menu will open only on mouse click. |
| | | Specifies the filter selector for elements inside the target in that the context menu will be opened. |
| | | If is set by particular number, the menu will open after that period (in milliseconds). |
Styling & Appearance Properties
| Property | Type | Default | Description |
|---|
| MenuAnimationSettingsModel
| { duration: 400, easing: 'ease', effect: 'SlideDown' }
| Specifies the animation settings for the sub menu open/close. See Animation Settings section. |
| | | Defines class/multiple classes separated by a space in the Menu wrapper. Use for custom styling. |
| | | Enable or disable rendering component in right to left direction. |
Data & Behavior Properties
| Property | Type | Default | Description |
|---|
| | | This property allows you to define custom templates for items in the ContextMenu. Can be string selector or template function. |
| | | Overrides the global culture and localization value for this component. Default global culture is . |
| | | Specifies whether to enable/disable the scrollable option in ContextMenu. |
Security & Persistence Properties
| Property | Type | Default | Description |
|---|
| | | Specifies whether to enable the rendering of untrusted HTML values. If , the component will sanitize any suspected untrusted strings and scripts before rendering them. Set to only when you trust the HTML source completely. |
| | | Enable or disable persisting component's state between page reloads. When enabled, menu state is saved in localStorage. |
Property Example - Basic Configuration
Brief Example:
typescript
@Component({
selector: 'app-context-menu',
template: `
<div id="target">Right click here</div>
<ejs-contextmenu
target='#target'
[items]='items'
[animationSettings]='animSettings'
cssClass='custom-menu'>
</ejs-contextmenu>
`
})
export class ContextMenuComponent {
items: MenuItemModel[] = [
{ text: 'Edit' },
{ text: 'Delete' }
];
animSettings = {
duration: 300,
effect: 'FadeIn',
easing: 'ease-out'
};
}
Full Working Example:
typescript
import { Component, ViewChild } from '@angular/core';
import { ContextMenuComponent } from '@syncfusion/ej2-angular-navigations';
import { MenuItemModel } from '@syncfusion/ej2-navigations';
@Component({
selector: 'app-context-menu-config',
standalone: true,
imports: [ContextMenuModule],
template: `
<div class="container">
<h3>Advanced Configuration Example</h3>
<!-- Target element for context menu -->
<div id="configTarget" class="target-box">
Right click or touch hold to open menu
</div>
<!-- ContextMenu with complete configuration -->
<ejs-contextmenu
#contextMenu
id='contextMenu'
target='#configTarget'
[items]='menuItems'
[animationSettings]='animationSettings'
cssClass='modern-menu'
[showItemOnClick]='true'
[enableScrolling]='true'
[hoverDelay]='300'
[enableHtmlSanitizer]='true'
[enablePersistence]='true'
locale='en-US'>
</ejs-contextmenu>
</div>
`,
styles: [`
.target-box {
width: 300px;
height: 200px;
border: 2px dashed #ccc;
display: flex;
align-items: center;
justify-content: center;
background: #f5f5f5;
cursor: context-menu;
}
`]
})
export class AdvancedContextMenuComponent {
@ViewChild('contextMenu') contextMenu!: ContextMenuComponent;
menuItems: MenuItemModel[] = [
{ text: 'Edit', iconCss: 'e-cm-icons e-edit', id: 'edit' },
{ text: 'Delete', iconCss: 'e-cm-icons e-delete', id: 'delete' },
{ separator: true },
{ text: 'More', id: 'more' }
];
animationSettings = {
effect: 'FadeIn' as any,
duration: 400,
easing: 'ease-in-out'
};
}
Menu Item Properties (MenuItemModel)
MenuItemModel defines the structure for each menu item. Each item in the
array follows this model:
| Property | Type | Optional | Description |
|---|
| | No | Required. Specifies text for menu item. This is the display label shown to users. |
| | Yes | Specifies the id for menu item. Use this for identifying items in methods like , , etc. |
| | Yes | Specifies the sub menu items that is the array of MenuItem model. Creates nested/hierarchical menus. |
| | Yes | Specifies separator between the menu items. Separators are either horizontal or vertical lines used to group menu items. Set to to create a visual divider. |
| | Yes | Defines class/multiple classes separated by a space for the menu Item that is used to include an icon. Menu Item can include font icon and sprite image. Example: iconCss: 'e-icons e-edit'
. |
| | Yes | Specifies url for menu item that creates the anchor link to navigate to the url provided. When clicked, navigates to this URL. |
| | Yes | Specifies the htmlAttributes property to support adding custom attributes to the menu items. Example: { 'data-info': 'value', 'title': 'My Tooltip' }
. |
MenuItem Example - Basic Usage
Brief Example:
typescript
items: MenuItemModel[] = [
{ text: 'Cut', id: 'cut', iconCss: 'e-icons e-cut' },
{ text: 'Copy', id: 'copy', iconCss: 'e-icons e-copy' },
{ text: 'Paste', id: 'paste', iconCss: 'e-icons e-paste' },
{ separator: true },
{ text: 'Delete', id: 'delete', iconCss: 'e-icons e-delete' }
];
Full Working Example - Complex MenuItemModel:
typescript
@Component({
selector: 'app-menu-items-config',
standalone: true,
imports: [ContextMenuModule],
template: `
<div id="target">Right click for advanced menu</div>
<ejs-contextmenu target='#target' [items]='menuItems'></ejs-contextmenu>
`
})
export class MenuItemsComponent {
menuItems: MenuItemModel[] = [
// Item with icon
{
text: 'Edit',
id: 'edit-item',
iconCss: 'e-icons e-edit',
htmlAttributes: {
'data-action': 'edit',
'title': 'Edit selected item'
}
},
// Item with submenu
{
text: 'Format',
id: 'format',
iconCss: 'e-icons e-palette',
items: [
{ text: 'Bold', id: 'bold' },
{ text: 'Italic', id: 'italic' },
{ text: 'Underline', id: 'underline' }
]
},
// Navigation item with URL
{
text: 'Visit Website',
id: 'website',
iconCss: 'e-icons e-export',
url: 'https://example.com',
htmlAttributes: { 'target': '_blank' }
},
// Separator
{ separator: true },
// Item with nested submenu
{
text: 'Advanced',
id: 'advanced',
items: [
{
text: 'Settings',
id: 'settings',
items: [
{ text: 'General', id: 'general' },
{ text: 'Advanced', id: 'adv' }
]
},
{ text: 'Help', id: 'help', url: 'https://help.example.com' }
]
}
];
}
Component Methods
Method: enableItems
Signature:
typescript
enableItems(items: string[], enable?: boolean, isUniqueId?: boolean): void
| Parameter | Type | Optional | Description |
|---|
| | No | Array of item text or ids that needs to be enabled/disabled. |
| | Yes, default: | Set to enable items; set to disable items. |
| | Yes, default: | Set if items array contains unique ids instead of text. |
Brief Example:
typescript
// Disable 'Delete' item by text
this.contextMenu.enableItems(['Delete'], false);
// Enable items by id
this.contextMenu.enableItems(['edit-item', 'copy-item'], true, true);
Full Working Example:
typescript
@Component({
selector: 'app-enable-items',
template: `
<button (click)="disableDelete()">Disable Delete</button>
<button (click)="enableAll()">Enable All</button>
<div id="target">Right click here</div>
<ejs-contextmenu #cm target='#target' [items]='items'></ejs-contextmenu>
`
})
export class EnableItemsComponent {
@ViewChild('cm') contextMenu!: ContextMenuComponent;
items: MenuItemModel[] = [
{ text: 'Edit', id: 'edit' },
{ text: 'Delete', id: 'delete' },
{ text: 'Copy', id: 'copy' }
];
disableDelete() {
this.contextMenu.enableItems(['Delete'], false);
}
enableAll() {
this.contextMenu.enableItems(['Edit', 'Delete', 'Copy'], true);
}
}
Method: insertAfter
Signature:
typescript
insertAfter(items: MenuItemModel[], text: string, isUniqueId?: boolean): void
| Parameter | Type | Optional | Description |
|---|
| | No | Array of MenuItemModel that needs to be inserted. |
| | No | Text item after which the element to be inserted. If is true, this is the unique id. |
| | Yes, default: | Set if text is a unique id instead of display text. |
Brief Example:
typescript
// Insert item after 'Edit'
this.contextMenu.insertAfter([{ text: 'Save' }], 'Edit');
// Insert after item with specific id
this.contextMenu.insertAfter([{ text: 'New', id: 'new-item' }], 'edit-item', true);
Full Working Example:
typescript
@Component({
selector: 'app-insert-after',
template: `
<button (click)="addAfterEdit()">Add Item After Edit</button>
<div id="target">Right click here</div>
<ejs-contextmenu #cm target='#target' [items]='items'></ejs-contextmenu>
`
})
export class InsertAfterComponent {
@ViewChild('cm') contextMenu!: ContextMenuComponent;
items: MenuItemModel[] = [
{ text: 'Edit', id: 'edit' },
{ text: 'Delete', id: 'delete' }
];
addAfterEdit() {
this.contextMenu.insertAfter(
[
{ text: 'Copy', id: 'copy' },
{ text: 'Paste', id: 'paste' }
],
'Edit'
);
}
}
Method: insertBefore
Signature:
typescript
insertBefore(items: MenuItemModel[], text: string, isUniqueId?: boolean): void
| Parameter | Type | Optional | Description |
|---|
| | No | Array of MenuItemModel that needs to be inserted. |
| | No | Text item before which the element to be inserted. If is true, this is the unique id. |
| | Yes, default: | Set if text is a unique id instead of display text. |
Brief Example:
typescript
this.contextMenu.insertBefore([{ text: 'Undo' }], 'Edit');
Method: removeItems
Signature:
typescript
removeItems(items: string[], isUniqueId?: boolean): void
| Parameter | Type | Optional | Description |
|---|
| | No | Array of item text or ids that needs to be removed. |
| | Yes, default: | Set if items array contains unique ids instead of text. |
Brief Example:
typescript
this.contextMenu.removeItems(['Delete', 'Copy']);
Method: hideItems
Signature:
typescript
hideItems(items: string[], isUniqueId?: boolean): void
| Parameter | Type | Optional | Description |
|---|
| | No | Array of item text or ids that needs to be hidden. |
| | Yes, default: | Set if items array contains unique ids instead of text. |
Brief Example:
typescript
this.contextMenu.hideItems(['AdminOnly'], true);
Method: showItems
Signature:
typescript
showItems(items: string[], isUniqueId?: boolean): void
| Parameter | Type | Optional | Description |
|---|
| | No | Array of item text or ids that needs to be shown. |
| | Yes, default: | Set if items array contains unique ids instead of text. |
Brief Example:
typescript
this.contextMenu.showItems(['AdminOnly'], true);
Method: getItemIndex
Signature:
typescript
getItemIndex(item: MenuItem | string, isUniqueId?: boolean): number[]
| Parameter | Type | Optional | Description |
|---|
| | No | MenuItem object or id/text to get the index for. |
| | Yes, default: | Set if item is a unique id instead of text. |
Return: - Array of indices representing the position of the item in the menu hierarchy.
Brief Example:
typescript
// Get index by text
const index = this.contextMenu.getItemIndex('Edit'); // [0] for first item
// Get index by id
const index = this.contextMenu.getItemIndex('edit-item', true); // [0]
// For nested items
const index = this.contextMenu.getItemIndex('Bold', true); // [1, 0] for Format > Bold
Full Working Example:
typescript
@Component({
selector: 'app-get-index',
template: `
<button (click)="findItem()">Find Item Index</button>
<div>Index: {{ itemIndex }}</div>
<div id="target">Right click here</div>
<ejs-contextmenu #cm target='#target' [items]='items'></ejs-contextmenu>
`
})
export class GetIndexComponent {
@ViewChild('cm') contextMenu!: ContextMenuComponent;
itemIndex: any = null;
items: MenuItemModel[] = [
{ text: 'Edit', id: 'edit' },
{
text: 'Format',
id: 'format',
items: [
{ text: 'Bold', id: 'bold' },
{ text: 'Italic', id: 'italic' }
]
}
];
findItem() {
this.itemIndex = this.contextMenu.getItemIndex('Bold', true);
console.log('Item index:', this.itemIndex); // [1, 0]
}
}
Method: setItem
Signature:
typescript
setItem(item: MenuItem, id?: string, isUniqueId?: boolean): void
| Parameter | Type | Optional | Description |
|---|
| | No | MenuItem object containing updated properties. |
| | Yes | id or text of the item to be updated. If not provided, updates the item passed as first parameter. |
| | Yes, default: | Set if id is a unique id instead of text. |
Brief Example:
typescript
// Update item by text
this.contextMenu.setItem({ text: 'Edit Document' }, 'Edit');
// Update item by id
this.contextMenu.setItem(
{ text: 'Remove', iconCss: 'e-icons e-delete' },
'delete-item',
true
);
Method: open
Signature:
typescript
open(top: number, left: number, target?: HTMLElement): void
| Parameter | Type | Optional | Description |
|---|
| | No | To specify ContextMenu vertical positioning (Y coordinate in pixels). |
| | No | To specify ContextMenu horizontal positioning (X coordinate in pixels). |
| | Yes | To calculate z-index for ContextMenu based upon the specified target element. |
Brief Example:
typescript
// Open at mouse position
this.contextMenu.open(event.clientY, event.clientX);
// Open at specific coordinates
this.contextMenu.open(200, 300);
// Open relative to target element
this.contextMenu.open(100, 150, document.getElementById('target'));
Method: close
Signature:
Brief Example:
typescript
// Close the open ContextMenu
this.contextMenu.close();
Method: destroy
Signature:
Brief Example:
typescript
// Completely destroy the component and cleanup resources
this.contextMenu.destroy();
Full Working Example - Destroy on Component Destroy:
typescript
import { Component, ViewChild, OnDestroy } from '@angular/core';
import { ContextMenuComponent } from '@syncfusion/ej2-angular-navigations';
@Component({
selector: 'app-destroy-example',
template: `
<button (click)="destroyMenu()">Destroy Menu</button>
<div id="target">Right click here</div>
<ejs-contextmenu #cm target='#target' [items]='items'></ejs-contextmenu>
`
})
export class DestroyExampleComponent implements OnDestroy {
@ViewChild('cm') contextMenu!: ContextMenuComponent;
items: MenuItemModel[] = [{ text: 'Item 1' }];
destroyMenu() {
if (this.contextMenu) {
this.contextMenu.destroy();
console.log('Menu destroyed');
}
}
ngOnDestroy() {
// Cleanup when component is destroyed
if (this.contextMenu) {
this.contextMenu.destroy();
}
}
}
Animation Settings (MenuAnimationSettingsModel)
Configure how menu items animate when opening/closing:
| Property | Type | Default | Description |
|---|
| | | Specifies the time duration (in milliseconds) to transform/animate the menu. Example: for 300ms animation. |
| | | Specifies the easing effect applied while transform. Examples: , , , , , 'cubic-bezier(0.25, 0.1, 0.25, 1)'
. |
| | | Specifies the effect that shown in the sub menu transform. Options: 'None' | 'SlideDown' | 'ZoomIn' | 'FadeIn'
. |
Effect Options:
- None: Specifies the sub menu transform with no animation effect.
- SlideDown: Specifies the sub menu transform with slide down effect (default).
- ZoomIn: Specifies the sub menu transform with zoom in effect.
- FadeIn: Specifies the sub menu transform with fade in effect.
Brief Example:
typescript
animationSettings = {
duration: 300,
effect: 'FadeIn' as any,
easing: 'ease-out'
};
Full Working Example:
typescript
@Component({
selector: 'app-animation-config',
template: `
<div id="target">Right click here</div>
<ejs-contextmenu
target='#target'
[items]='items'
[animationSettings]='animSettings'>
</ejs-contextmenu>
`
})
export class AnimationConfigComponent {
items: MenuItemModel[] = [
{ text: 'Option 1' },
{ text: 'Option 2' }
];
animSettings = {
effect: 'ZoomIn' as any,
duration: 200,
easing: 'ease-in-out'
};
}
Component Events
Event: beforeOpen
Signature: (beforeOpen): EmitType<BeforeOpenCloseMenuEventArgs>
Triggers before opening the menu item. Use this to prevent menu opening, show/hide items based on context, or customize menu before display.
Event Arguments - BeforeOpenCloseMenuEventArgs:
| Property | Type | Description |
|---|
| | Specifies name of the event (value: ). |
Brief Example:
typescript
onBeforeOpen(args: BeforeOpenCloseMenuEventArgs) {
console.log('Menu about to open');
}
Full Working Example:
typescript
@Component({
selector: 'app-before-open',
template: `
<div id="target">Right click to open</div>
<ejs-contextmenu
target='#target'
[items]='items'
(beforeOpen)='onBeforeOpen($event)'>
</ejs-contextmenu>
`
})
export class BeforeOpenComponent {
items: MenuItemModel[] = [{ text: 'Item 1' }];
onBeforeOpen(args: BeforeOpenCloseMenuEventArgs) {
console.log('Event:', args.name); // 'beforeOpen'
}
}
Event: beforeClose
Signature: (beforeClose): EmitType<BeforeOpenCloseMenuEventArgs>
Triggers before closing the menu. Use this to perform cleanup or prevent menu from closing.
Event Arguments - BeforeOpenCloseMenuEventArgs:
| Property | Type | Description |
|---|
| | Specifies name of the event (value: ). |
Brief Example:
typescript
onBeforeClose(args: BeforeOpenCloseMenuEventArgs) {
console.log('Menu about to close');
}
Event: onOpen
Signature: (onOpen): EmitType<OpenCloseMenuEventArgs>
Triggers while opening the menu item. This event fires after the menu has been opened and is visible.
Event Arguments - OpenCloseMenuEventArgs:
| Property | Type | Description |
|---|
| | Specifies name of the event (value: ). |
Brief Example:
typescript
onOpen(args: OpenCloseMenuEventArgs) {
console.log('Menu opened:', args.name);
}
Full Working Example:
typescript
@Component({
selector: 'app-open-event',
template: `
<div id="target">Right click here</div>
<ejs-contextmenu
target='#target'
[items]='items'
(onOpen)='onOpen($event)'
(onClose)='onClose($event)'>
</ejs-contextmenu>
<p>Status: {{ menuStatus }}</p>
`
})
export class OpenEventComponent {
items: MenuItemModel[] = [{ text: 'Item 1' }];
menuStatus = 'Closed';
onOpen(args: OpenCloseMenuEventArgs) {
this.menuStatus = 'Menu Opened - ' + args.name;
}
onClose(args: OpenCloseMenuEventArgs) {
this.menuStatus = 'Menu Closed - ' + args.name;
}
}
Event: onClose
Signature: (onClose): EmitType<OpenCloseMenuEventArgs>
Triggers while closing the menu. This event fires after the menu has been closed and is no longer visible.
Event Arguments - OpenCloseMenuEventArgs:
| Property | Type | Description |
|---|
| | Specifies name of the event (value: ). |
Brief Example:
typescript
onClose(args: OpenCloseMenuEventArgs) {
console.log('Menu closed:', args.name);
}
Event: select
Signature: (select): EmitType<MenuEventArgs>
Triggers while selecting menu item. Use this to handle menu item clicks and perform actions.
Event Arguments - MenuEventArgs:
| Property | Type | Description |
|---|
| | Specifies name of the event (value: ). |
Brief Example:
typescript
onSelect(args: MenuEventArgs) {
console.log('Item selected:', args.name);
}
Full Working Example:
typescript
@Component({
selector: 'app-select-event',
template: `
<div id="target">Right click here</div>
<ejs-contextmenu
target='#target'
[items]='items'
(select)='onSelect($event)'>
</ejs-contextmenu>
<p>Selected: {{ selectedItem }}</p>
`
})
export class SelectEventComponent {
items: MenuItemModel[] = [
{ text: 'Edit', id: 'edit' },
{ text: 'Delete', id: 'delete' },
{ text: 'Copy', id: 'copy' }
];
selectedItem = 'None';
onSelect(args: MenuEventArgs) {
this.selectedItem = args.name;
console.log('Selected item event:', args.name);
}
}
Event: beforeItemRender
Signature: (beforeItemRender): EmitType<MenuEventArgs>
Triggers while rendering each menu item. Use this to customize each item's appearance or behavior before rendering.
Event Arguments - MenuEventArgs:
| Property | Type | Description |
|---|
| | Specifies name of the event (value: ). |
Brief Example:
typescript
onBeforeItemRender(args: MenuEventArgs) {
console.log('Rendering item:', args.name);
}
Full Working Example:
typescript
@Component({
selector: 'app-before-item-render',
template: `
<div id="target">Right click here</div>
<ejs-contextmenu
target='#target'
[items]='items'
(beforeItemRender)='onBeforeItemRender($event)'>
</ejs-contextmenu>
`
})
export class BeforeItemRenderComponent {
items: MenuItemModel[] = [
{ text: 'Edit', id: 'edit' },
{ text: 'Delete', id: 'delete' }
];
onBeforeItemRender(args: MenuEventArgs) {
console.log('Rendering:', args.name);
// Customize items before rendering
}
}
Event: created
Signature: (created): EmitType<Event>
Triggers once the component rendering is completed. Use this for post-initialization setup.
Event Arguments:
| Property | Type | Description |
|---|
| - | | Standard JavaScript Event object. |
Brief Example:
typescript
onCreated(event: Event) {
console.log('ContextMenu component created and ready');
}
Key Properties & Events Quick Reference
| Property/Event | Purpose | Example |
|---|
| Define menu structure | |
| Element triggering menu | |
| Menu item click | (select)="onSelect($event)"
|
| Before menu opens | (beforeOpen)="onBeforeOpen($event)"
|
| Toggle item availability | enableItems(['Edit'], false)
|
| Add items after target | insertAfter([...], 'Refresh')
|
| Hide specific items | hideItems(['Cut', 'Copy'])
|
| Control appearance effects | |
Common Use Cases
- File Operations Menu - Cut, Copy, Paste, Delete options
- Content Editor Menu - Format, Insert, Link, Media options
- Data Grid Context - Edit, Delete, Export, Filter actions
- Navigation Menu - Links to pages or external URLs
- Permission-Based Menu - Show/hide items based on user role
- Multi-Language Menu - Dynamic item text from translations
- Confirmation Dialogs - Open dialog before executing action
- Table Operations - Row/column management in data tables
Next Steps
- Select a reference file based on your task (Getting Started, Menu Management, Data Binding, Events, Styling, or Templates)
- Review the code examples for your specific use case
- Copy relevant code patterns to your project
- Customize menu items for your application context
- Test interactions with different target elements
Need help with a specific task? Reference the appropriate guide above and let me know which menu feature you're implementing.