goog.ui.ModalAriaVisibilityHelper

Provided By	`goog.ui.ModalAriaVisibilityHelper`

Helper object to control aria visibility of the rest of the page (background) for a given element. Example usage is to restrict screenreader focus to a modal popup while it is visible.

WARNING: This will work only if the element is rendered directly in the 'body' element.

new ModalAriaVisibilityHelper( `element`, `domHelper` )

Parameters

`element`	`Element`
	The given element.
`domHelper`	`goog.dom.DomHelper`
	DomHelper for the page.

VIEW SOURCE

Instance Methods

Sets aria-hidden on the rest of the page to restrict screen reader focus. Top-level elements with an explicit aria-hidden state are not altered.

Parameters

`hide`	`boolean`
	Whether to hide or show the rest of the page.

VIEW SOURCE

goog.ui.ModalAriaVisibilityHelper

new ModalAriaVisibilityHelper( element, domHelper )

Instance Methods

this.setBackgroundVisibility( hide ) → void

new ModalAriaVisibilityHelper( `element`, `domHelper` )

`this.`setBackgroundVisibility( `hide` ) `→` `void`