/**
* @license
* Copyright 2018 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
import type { ElementHandle } from '../api/ElementHandle.js';
import type { Realm } from '../api/Realm.js';
/**
* Represents a Node and the properties of it that are relevant to Accessibility.
* @public
*/
export interface SerializedAXNode {
/**
* The {@link https://www.w3.org/TR/wai-aria/#usage_intro | role} of the node.
*/
role: string;
/**
* A human readable name for the node.
*/
name?: string;
/**
* The current value of the node.
*/
value?: string | number;
/**
* An additional human readable description of the node.
*/
description?: string;
/**
* Any keyboard shortcuts associated with this node.
*/
keyshortcuts?: string;
/**
* A human readable alternative to the role.
*/
roledescription?: string;
/**
* A description of the current value.
*/
valuetext?: string;
disabled?: boolean;
expanded?: boolean;
focused?: boolean;
modal?: boolean;
multiline?: boolean;
/**
* Whether more than one child can be selected.
*/
multiselectable?: boolean;
readonly?: boolean;
required?: boolean;
selected?: boolean;
/**
* Whether the checkbox is checked, or in a
* {@link https://www.w3.org/TR/wai-aria-practices/examples/checkbox/checkbox-2/checkbox-2.html | mixed state}.
*/
checked?: boolean | 'mixed';
/**
* Whether the node is checked or in a mixed state.
*/
pressed?: boolean | 'mixed';
/**
* The level of a heading.
*/
level?: number;
valuemin?: number;
valuemax?: number;
autocomplete?: string;
haspopup?: string;
/**
* Whether and in what way this node's value is invalid.
*/
invalid?: string;
orientation?: string;
/**
* Children of this node, if there are any.
*/
children?: SerializedAXNode[];
/**
* Get an ElementHandle for this AXNode if available.
*
* If the underlying DOM element has been disposed, the method might return an
* error.
*/
elementHandle(): Promise<ElementHandle | null>;
}
/**
* @public
*/
export interface SnapshotOptions {
/**
* Prune uninteresting nodes from the tree.
* @defaultValue `true`
*/
interestingOnly?: boolean;
/**
* Root node to get the accessibility tree for
* @defaultValue The root node of the entire page.
*/
root?: ElementHandle<Node>;
}
/**
* The Accessibility class provides methods for inspecting the browser's
* accessibility tree. The accessibility tree is used by assistive technology
* such as {@link https://en.wikipedia.org/wiki/Screen_reader | screen readers} or
* {@link https://en.wikipedia.org/wiki/Switch_access | switches}.
*
* @remarks
*
* Accessibility is a very platform-specific thing. On different platforms,
* there are different screen readers that might have wildly different output.
*
* Blink - Chrome's rendering engine - has a concept of "accessibility tree",
* which is then translated into different platform-specific APIs. Accessibility
* namespace gives users access to the Blink Accessibility Tree.
*
* Most of the accessibility tree gets filtered out when converting from Blink
* AX Tree to Platform-specific AX-Tree or by assistive technologies themselves.
* By default, Puppeteer tries to approximate this filtering, exposing only
* the "interesting" nodes of the tree.
*
* @public
*/
export declare class Accessibility {
#private;
/**
* @internal
*/
constructor(realm: Realm);
/**
* Captures the current state of the accessibility tree.
* The returned object represents the root accessible node of the page.
*
* @remarks
*
* **NOTE** The Chrome accessibility tree contains nodes that go unused on
* most platforms and by most screen readers. Puppeteer will discard them as
* well for an easier to process tree, unless `interestingOnly` is set to
* `false`.
*
* @example
* An example of dumping the entire accessibility tree:
*
* ```ts
* const snapshot = await page.accessibility.snapshot();
* console.log(snapshot);
* ```
*
* @example
* An example of logging the focused node's name:
*
* ```ts
* const snapshot = await page.accessibility.snapshot();
* const node = findFocusedNode(snapshot);
* console.log(node && node.name);
*
* function findFocusedNode(node) {
* if (node.focused) return node;
* for (const child of node.children || []) {
* const foundNode = findFocusedNode(child);
* return foundNode;
* }
* return null;
* }
* ```
*
* @returns An AXNode object representing the snapshot.
*/
snapshot(options?: SnapshotOptions): Promise<SerializedAXNode | null>;
private serializeTree;
private collectInterestingNodes;
}
//# sourceMappingURL=Accessibility.d.ts.map |