1<?php
2/**
3 * Widget API: WP_Widget_Meta class
4 *
5 * @package WordPress
6 * @subpackage Widgets
7 * @since 4.4.0
8 */
9
10/**
11 * Core class used to implement a Meta widget.
12 *
13 * Displays log in/out, RSS feed links, etc.
14 *
15 * @since 2.8.0
16 *
17 * @see WP_Widget
18 */
19class WP_Widget_Meta extends WP_Widget {
20
21	/**
22	 * Sets up a new Meta widget instance.
23	 *
24	 * @since 2.8.0
25	 */
26	public function __construct() {
27		$widget_ops = array(
28			'classname'                   => 'widget_meta',
29			'description'                 => __( 'Login, RSS, &amp; WordPress.org links.' ),
30			'customize_selective_refresh' => true,
31			'show_instance_in_rest'       => true,
32		);
33		parent::__construct( 'meta', __( 'Meta' ), $widget_ops );
34	}
35
36	/**
37	 * Outputs the content for the current Meta widget instance.
38	 *
39	 * @since 2.8.0
40	 *
41	 * @param array $args     Display arguments including 'before_title', 'after_title',
42	 *                        'before_widget', and 'after_widget'.
43	 * @param array $instance Settings for the current Meta widget instance.
44	 */
45	public function widget( $args, $instance ) {
46		$default_title = __( 'Meta' );
47		$title         = ! empty( $instance['title'] ) ? $instance['title'] : $default_title;
48
49		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
50		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
51
52		echo $args['before_widget'];
53
54		if ( $title ) {
55			echo $args['before_title'] . $title . $args['after_title'];
56		}
57
58		$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';
59
60		/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */
61		$format = apply_filters( 'navigation_widgets_format', $format );
62
63		if ( 'html5' === $format ) {
64			// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
65			$title      = trim( strip_tags( $title ) );
66			$aria_label = $title ? $title : $default_title;
67			echo '<nav role="navigation" aria-label="' . esc_attr( $aria_label ) . '">';
68		}
69		?>
70
71		<ul>
72			<?php wp_register(); ?>
73			<li><?php wp_loginout(); ?></li>
74			<li><a href="<?php echo esc_url( get_bloginfo( 'rss2_url' ) ); ?>"><?php _e( 'Entries feed' ); ?></a></li>
75			<li><a href="<?php echo esc_url( get_bloginfo( 'comments_rss2_url' ) ); ?>"><?php _e( 'Comments feed' ); ?></a></li>
76
77			<?php
78			/**
79			 * Filters the "WordPress.org" list item HTML in the Meta widget.
80			 *
81			 * @since 3.6.0
82			 * @since 4.9.0 Added the `$instance` parameter.
83			 *
84			 * @param string $html     Default HTML for the WordPress.org list item.
85			 * @param array  $instance Array of settings for the current widget.
86			 */
87			echo apply_filters(
88				'widget_meta_poweredby',
89				sprintf(
90					'<li><a href="%1$s">%2$s</a></li>',
91					esc_url( __( 'https://wordpress.org/' ) ),
92					__( 'WordPress.org' )
93				),
94				$instance
95			);
96
97			wp_meta();
98			?>
99
100		</ul>
101
102		<?php
103		if ( 'html5' === $format ) {
104			echo '</nav>';
105		}
106
107		echo $args['after_widget'];
108	}
109
110	/**
111	 * Handles updating settings for the current Meta widget instance.
112	 *
113	 * @since 2.8.0
114	 *
115	 * @param array $new_instance New settings for this instance as input by the user via
116	 *                            WP_Widget::form().
117	 * @param array $old_instance Old settings for this instance.
118	 * @return array Updated settings to save.
119	 */
120	public function update( $new_instance, $old_instance ) {
121		$instance          = $old_instance;
122		$instance['title'] = sanitize_text_field( $new_instance['title'] );
123
124		return $instance;
125	}
126
127	/**
128	 * Outputs the settings form for the Meta widget.
129	 *
130	 * @since 2.8.0
131	 *
132	 * @param array $instance Current settings.
133	 */
134	public function form( $instance ) {
135		$instance = wp_parse_args( (array) $instance, array( 'title' => '' ) );
136		?>
137		<p>
138			<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
139			<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'] ); ?>" />
140		</p>
141		<?php
142	}
143}
144