<?php

/**

 * Widget API: WP_Widget_Meta class

 *

 * @package WordPress

 * @subpackage Widgets

 * @since 4.4.0

 */

/**

 * Core class used to implement a Meta widget.

 *

 * Displays log in/out, RSS feed links, etc.

 *

 * @since 2.8.0

 *

 * @see WP_Widget

 */

class WP_Widget_Meta extends WP_Widget {

	/**

	 * Sets up a new Meta widget instance.

	 *

	 * @since 2.8.0

	 */

	public function __construct() {

		$widget_ops = array(

			'classname'                   => 'widget_meta',

			'description'                 => __( 'Login, RSS, & WordPress.org links.' ),

			'customize_selective_refresh' => true,

			'show_instance_in_rest'       => true,

		);

		parent::__construct( 'meta', __( 'Meta' ), $widget_ops );

	}

	/**

	 * Outputs the content for the current Meta widget instance.

	 *

	 * @since 2.8.0

	 *

	 * @param array $args     Display arguments including 'before_title', 'after_title',

	 *                        'before_widget', and 'after_widget'.

	 * @param array $instance Settings for the current Meta widget instance.

	 */

	public function widget( $args, $instance ) {

		$default_title = __( 'Meta' );

		$title         = ! empty( $instance['title'] ) ? $instance['title'] : $default_title;

		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */

		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );

		echo $args['before_widget'];

		if ( $title ) {

			echo $args['before_title'] . $title . $args['after_title'];

		}

		$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';

		/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */

		$format = apply_filters( 'navigation_widgets_format', $format );

		if ( 'html5' === $format ) {

			// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.

			$title      = trim( strip_tags( $title ) );

			$aria_label = $title ? $title : $default_title;

			echo '<nav aria-label="' . esc_attr( $aria_label ) . '">';

		}

		?>

		<ul>

			<?php wp_register(); ?>

			<li><?php wp_loginout(); ?></li>

			<li><a href="<?php echo esc_url( get_bloginfo( 'rss2_url' ) ); ?>"><?php _e( 'Entries feed' ); ?></a></li>

			<li><a href="<?php echo esc_url( get_bloginfo( 'comments_rss2_url' ) ); ?>"><?php _e( 'Comments feed' ); ?></a></li>

			<?php

			/**

			 * Filters the "WordPress.org" list item HTML in the Meta widget.

			 *

			 * @since 3.6.0

			 * @since 4.9.0 Added the `$instance` parameter.

			 *

			 * @param string $html     Default HTML for the WordPress.org list item.

			 * @param array  $instance Array of settings for the current widget.

			 */

			echo apply_filters(

				'widget_meta_poweredby',

				sprintf(

					'<li><a href="%1$s">%2$s</a></li>',

					esc_url( __( 'https://wordpress.org/' ) ),

					__( 'WordPress.org' )

				),

				$instance

			);

			wp_meta();

			?>

		</ul>

		<?php

		if ( 'html5' === $format ) {

			echo '</nav>';

		}

		echo $args['after_widget'];

	}

	/**

	 * Handles updating settings for the current Meta widget instance.

	 *

	 * @since 2.8.0

	 *

	 * @param array $new_instance New settings for this instance as input by the user via

	 *                            WP_Widget::form().

	 * @param array $old_instance Old settings for this instance.

	 * @return array Updated settings to save.

	 */

	public function update( $new_instance, $old_instance ) {

		$instance          = $old_instance;

		$instance['title'] = sanitize_text_field( $new_instance['title'] );

		return $instance;

	}

	/**

	 * Outputs the settings form for the Meta widget.

	 *

	 * @since 2.8.0

	 *

	 * @param array $instance Current settings.

	 */

	public function form( $instance ) {

		$instance = wp_parse_args( (array) $instance, array( 'title' => '' ) );

		?>

		<p>

			<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>

			<input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $instance['title'] ); ?>" />

		</p>

		<?php

	}

}