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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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 1287x 4897x 4897x 1287x 1287x 1x 1x 282x 282x 282x 282x 219x 219x 219x 282x 282x 187x 187x 282x 282x 1x 1x 526x 526x 431x 431x 526x 526x 1x 1x 808x 484x 484x 324x 324x 324x 808x 808x 1x | import {
ContentChildren,
Directive,
EventEmitter,
Output,
QueryList,
forwardRef,
} from '@angular/core';
import { FocusTargetDirective } from './focus-target.directive';
@Directive({
selector: '[data-gc-focus-scope]',
standalone: false,
})
export class FocusScopeDirective {
@Output()
public readonly onFocusLeft: EventEmitter<EventTarget | null> =
new EventEmitter<EventTarget | null>();
@Output()
public readonly onFocusEntered: EventEmitter<void> = new EventEmitter<void>();
// FocusTargetDirective gets the FocusScopeDirective injected in its constructor, hence
// Angular will order the declaration of the FocusTargetDirective after the declaration
// of the current class in the built library output. due to this, the FocusTargetDirective
// is not yet declared at the point when the code/metadata for this decorator is emitted
// and the class is missing => break this interdependency with a forwardRef, so the
// FocusTargetDirective can be used before its declared.
// note that the described error would be only visible at runtime when using the built library
// in another project!
@ContentChildren(forwardRef(() => FocusTargetDirective), {
descendants: true,
})
protected focusTargets!: QueryList<FocusTargetDirective>;
public get focusWithin(): boolean {
return this._focusWithin;
}
private _focusWithin = false;
public onTargetBlur(event: FocusEvent): void {
const newFocusedElement = event.relatedTarget;
if (
event.relatedTarget &&
(event.relatedTarget as HTMLElement).getAttribute(
'data-gc-refuse-focus',
) === 'true'
) {
// Workaround for https://gitlab.bestsolution.at/gefa/gefa-web-controls/-/issues/2670
const el = event.target as HTMLElement;
setTimeout(() => {
el.focus();
});
} else if (!this.isFocusWithin(newFocusedElement)) {
this._focusWithin = false;
this.onFocusLeft.emit(event.relatedTarget);
}
}
public onTargetFocus(event: FocusEvent): void {
const previousFocusedElement = event.relatedTarget;
if (!this.isFocusWithin(previousFocusedElement)) {
this._focusWithin = true;
this.onFocusEntered.emit();
}
}
private isFocusWithin(eventTarget: EventTarget | null): boolean {
if (eventTarget !== null) {
return this.focusTargets.some(target =>
target.isFocusTarget(eventTarget),
);
} else {
return false;
}
}
}
|