Checks if current user can make a proxy oEmbed request.

Retrieves the post type’s schema, conforming to JSON Schema.

Removes an HTTP header from the current response.

Sets up the site query, based on the query vars passed.

Core class that implements a media widget.

Constructor.

Add hooks while registering all widget instances of this widget class.

Filters the default media display states for items in the Media list table.

Loads the required scripts and styles for the widget control.

Enqueue preview scripts.