The RSS dashboard widget control.

Sets up $args to be used as input to wp_widget_rss_form(). Handles POST data
from RSS-type widgets.

function wp_dashboard_rss_control( $widget_id, $form_inputs = array() ) {
	$widget_options = get_option( 'dashboard_widget_options' );

	if ( ! $widget_options ) {
		$widget_options = array();
	}

	if ( ! isset( $widget_options[ $widget_id ] ) ) {
		$widget_options[ $widget_id ] = array();
	}

	$number = 1; // Hack to use wp_widget_rss_form().

	$widget_options[ $widget_id ]['number'] = $number;

	if ( 'POST' === $_SERVER['REQUEST_METHOD'] && isset( $_POST['widget-rss'][ $number ] ) ) {
		$_POST['widget-rss'][ $number ]         = wp_unslash( $_POST['widget-rss'][ $number ] );
		$widget_options[ $widget_id ]           = wp_widget_rss_process( $_POST['widget-rss'][ $number ] );
		$widget_options[ $widget_id ]['number'] = $number;

		// Title is optional. If black, fill it if possible.
		if ( ! $widget_options[ $widget_id ]['title'] && isset( $_POST['widget-rss'][ $number ]['title'] ) ) {
			$rss = fetch_feed( $widget_options[ $widget_id ]['url'] );
			if ( is_wp_error( $rss ) ) {
				$widget_options[ $widget_id ]['title'] = htmlentities( __( 'Unknown Feed' ) );
			} else {
				$widget_options[ $widget_id ]['title'] = htmlentities( strip_tags( $rss->get_title() ) );
				$rss->__destruct();
				unset( $rss );
			}
		}

		update_option( 'dashboard_widget_options', $widget_options );

		$locale    = get_user_locale();
		$cache_key = 'dash_v2_' . md5( $widget_id . '_' . $locale );
		delete_transient( $cache_key );
	}

	wp_widget_rss_form( $widget_options[ $widget_id ], $form_inputs );
}