WP_Embed::__construct()

Source

public function __construct() {
	// Hack to get the  shortcode to run before wpautop().
	add_filter( 'the_content', array( $this, 'run_shortcode' ), 8 );
	add_filter( 'widget_text_content', array( $this, 'run_shortcode' ), 8 );
	add_filter( 'widget_block_content', array( $this, 'run_shortcode' ), 8 );

	// Shortcode placeholder for strip_shortcodes().
	add_shortcode( 'embed', '__return_false' );

	// Attempts to embed all URLs in a post.
	add_filter( 'the_content', array( $this, 'autoembed' ), 8 );
	add_filter( 'widget_text_content', array( $this, 'autoembed' ), 8 );
	add_filter( 'widget_block_content', array( $this, 'autoembed' ), 8 );

	// After a post is saved, cache oEmbed items via Ajax.
	add_action( 'edit_form_advanced', array( $this, 'maybe_run_ajax_cache' ) );
	add_action( 'edit_page_form', array( $this, 'maybe_run_ajax_cache' ) );
}

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