DevExtreme Angular - Keyboard Support
An end user can use the following keys to interact with the widget.
Key | Action |
---|---|
Alt + ↓ | Opens the drop-down list. |
Alt + ↑ | Closes the drop-down list. |
Esc | Closes the drop-down list and removes focus from the widget. |
↑ / ↓ | If the drop-down list is opened, moves focus to the previous/next item; otherwise, selects the previous/next item. |
Page Up / Page Down | Moves focus to the first/last item. |
Enter or Space | Selects the item. |
You can implement a custom handler for a key using the registerKeyHandler(key, handler) method.
TypeScript
- import { ..., ViewChild, AfterViewInit } from "@angular/core";
- import { DxSelectBoxModule, DxSelectBoxComponent } from "devextreme-angular";
- // ...
- export class AppComponent implements AfterViewInit {
- @ViewChild(DxSelectBoxComponent, { static: false }) selectBox: DxSelectBoxComponent
- // Prior to Angular 8
- // @ViewChild(DxSelectBoxComponent) selectBox: DxSelectBoxComponent
- ngAfterViewInit () {
- this.selectBox.instance.registerKeyHandler("backspace", function (e) {
- // The argument "e" contains information on the event
- });
- this.selectBox.instance.registerKeyHandler("space", function (e) {
- // ...
- });
- }
- }
- @NgModule({
- imports: [
- // ...
- DxSelectBoxModule
- ],
- // ...
- })
See Also
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