| 1 | import { NgZone } from '@angular/core';
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| 2 | import { Observable } from 'rxjs';
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| 3 | export declare const FOCUSABLE_ELEMENTS_SELECTOR: string;
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| 4 | /**
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| 5 | * Returns first and last focusable elements inside of a given element based on specific CSS selector
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| 6 | */
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| 7 | export declare function getFocusableBoundaryElements(element: HTMLElement): HTMLElement[];
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| 8 | /**
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| 9 | * Function that enforces browser focus to be trapped inside a DOM element.
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| 10 | *
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| 11 | * Works only for clicks inside the element and navigation with 'Tab', ignoring clicks outside of the element
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| 12 | *
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| 13 | * @param zone Angular zone
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| 14 | * @param element The element around which focus will be trapped inside
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| 15 | * @param stopFocusTrap$ The observable stream. When completed the focus trap will clean up listeners
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| 16 | * and free internal resources
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| 17 | * @param refocusOnClick Put the focus back to the last focused element whenever a click occurs on element (default to
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| 18 | * false)
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| 19 | */
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| 20 | export declare const ngbFocusTrap: (zone: NgZone, element: HTMLElement, stopFocusTrap$: Observable<any>, refocusOnClick?: boolean) => void;
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