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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 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 1273x 5670x 5670x 1273x 1273x 1x 1x 276x 276x 276x 276x 215x 215x 215x 276x 276x 185x 185x 276x 276x 1x 1x 513x 513x 422x 422x 513x 513x 1x 1x 789x 473x 473x 316x 316x 316x 789x 789x 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;
}
}
}
|