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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 130x 130x 130x 1x 1x 130x 130x 130x 1x 1x 2801x 2801x 2801x 1x 1x 171x 171x 171x 1x 1x 1x 1x 1x 1x 130x 130x 1x 1x 1x 1x 1x 48x 48x 1x 1x 1x 20x 20x 1x 1x 1x 1x 70x 70x 1x | import {
Directive,
EventEmitter,
HostBinding,
HostListener,
Input,
Output,
} from '@angular/core';
import { Converter, Item, Key } from '../utils/util.types';
import { VirtualListboxService } from './virtual-listbox.service';
export interface ListboxSelectEvent {
key: Key;
open: boolean;
}
/**
* Aria Support for ListBox using a virtual focus with aria-activedescendant
*/
@Directive({
selector: '[data-gc-virtual-listbox]',
standalone: false,
})
export class VirtualListBoxDirective {
@HostBinding('attr.role')
protected readonly role = 'listbox';
@HostBinding('tabindex')
protected readonly tabindex = 0;
@Output()
public get onSelect(): EventEmitter<ListboxSelectEvent> {
return this.vls.onSelect;
}
@Output()
public get onKeypress(): EventEmitter<KeyboardEvent> {
return this.vls.onKeypress;
}
@HostBinding('attr.aria-activedescendant')
public get activeDescendant(): string | null {
return this.vls.activeDescendant;
}
@Input()
public set value(value: Key | undefined) {
this.vls.value = value;
}
public get value(): Key | undefined {
return this.vls.value;
}
@Input()
public get itemIdComputer(): Converter<Item, string> {
return this.vls.itemIdComputer;
}
public set itemIdComputer(itemIdComputer: Converter<Item, string>) {
this.vls.itemIdComputer = itemIdComputer;
}
constructor(private readonly vls: VirtualListboxService) {}
@HostListener('focus')
public onFocus(): void {
this.vls.onFocus();
}
@HostListener('blur')
public onBlur(): void {
this.vls.onBlur();
}
/** @ignore */
@HostListener('keydown', ['$event'])
public onKeyDown(event: KeyboardEvent): void {
this.vls.onKeyDown(event);
}
}
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