DevExtreme Angular - Keyboard Support
An end user can use the following keys to interact with the widget.
Key | Action |
---|---|
Alt + ↓ | Opens the drop-down menu. |
Enter or Backspace | If the drop-down menu is closed, opens it; otherwise selects the current item. |
Esc | Closes the drop-down menu. |
↑ / ↓ | If the drop-down menu is opened, moves focus to the previous/next item. |
Tab / Shift + Tab | If the drop-down menu is opened, moves focus to the list / search field. |
You can implement a custom handler for a key using the registerKeyHandler(key, handler) method.
TypeScript
- import { ..., ViewChild, AfterViewInit } from '@angular/core';
- import { DxLookupModule, DxLookupComponent } from 'devextreme-angular';
- // ...
- export class AppComponent implements AfterViewInit {
- @ViewChild(DxLookupComponent, { static: false }) lookup: DxLookupComponent;
- // Prior to Angular 8
- // @ViewChild(DxLookupComponent) lookup: DxLookupComponent;
- ngAfterViewInit () {
- this.lookup.instance.registerKeyHandler('backspace', function(e) {
- // The argument "e" contains information on the event
- });
- this.lookup.instance.registerKeyHandler('space', function(e) {
- // ...
- });
- }
- }
- @NgModule({
- imports: [
- // ...
- DxLookupModule
- ],
- // ...
- })
See Also
- Call Methods: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
- Lookup Demos
- Lookup API Reference
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