| /** |
| * @license |
| * Copyright Google LLC All Rights Reserved. |
| * |
| * Use of this source code is governed by an MIT-style license that can be |
| * found in the LICENSE file at https://angular.io/license |
| */ |
| import { Platform } from '@angular/cdk/platform'; |
| /** |
| * Utility for checking the interactivity of an element, such as whether is is focusable or |
| * tabbable. |
| */ |
| export declare class InteractivityChecker { |
| private _platform; |
| constructor(_platform: Platform); |
| /** |
| * Gets whether an element is disabled. |
| * |
| * @param element Element to be checked. |
| * @returns Whether the element is disabled. |
| */ |
| isDisabled(element: HTMLElement): boolean; |
| /** |
| * Gets whether an element is visible for the purposes of interactivity. |
| * |
| * This will capture states like `display: none` and `visibility: hidden`, but not things like |
| * being clipped by an `overflow: hidden` parent or being outside the viewport. |
| * |
| * @returns Whether the element is visible. |
| */ |
| isVisible(element: HTMLElement): boolean; |
| /** |
| * Gets whether an element can be reached via Tab key. |
| * Assumes that the element has already been checked with isFocusable. |
| * |
| * @param element Element to be checked. |
| * @returns Whether the element is tabbable. |
| */ |
| isTabbable(element: HTMLElement): boolean; |
| /** |
| * Gets whether an element can be focused by the user. |
| * |
| * @param element Element to be checked. |
| * @returns Whether the element is focusable. |
| */ |
| isFocusable(element: HTMLElement): boolean; |
| } |