1<?php
2/**
3 * Widget API: WP_Widget_Calendar class
4 *
5 * @package WordPress
6 * @subpackage Widgets
7 * @since 4.4.0
8 */
9
10/**
11 * Core class used to implement the Calendar widget.
12 *
13 * @since 2.8.0
14 *
15 * @see WP_Widget
16 */
17class WP_Widget_Calendar extends WP_Widget {
18 /**
19 * Ensure that the ID attribute only appears in the markup once
20 *
21 * @since 4.4.0
22 * @var int
23 */
24 private static $instance = 0;
25
26 /**
27 * Sets up a new Calendar widget instance.
28 *
29 * @since 2.8.0
30 */
31 public function __construct() {
32 $widget_ops = array(
33 'classname' => 'widget_calendar',
34 'description' => __( 'A calendar of your site’s posts.' ),
35 'customize_selective_refresh' => true,
36 'show_instance_in_rest' => true,
37 );
38 parent::__construct( 'calendar', __( 'Calendar' ), $widget_ops );
39 }
40
41 /**
42 * Outputs the content for the current Calendar widget instance.
43 *
44 * @since 2.8.0
45 *
46 * @param array $args Display arguments including 'before_title', 'after_title',
47 * 'before_widget', and 'after_widget'.
48 * @param array $instance The settings for the particular instance of the widget.
49 */
50 public function widget( $args, $instance ) {
51 $title = ! empty( $instance['title'] ) ? $instance['title'] : '';
52
53 /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
54 $title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
55
56 echo $args['before_widget'];
57 if ( $title ) {
58 echo $args['before_title'] . $title . $args['after_title'];
59 }
60 if ( 0 === self::$instance ) {
61 echo '<div id="calendar_wrap" class="calendar_wrap">';
62 } else {
63 echo '<div class="calendar_wrap">';
64 }
65 get_calendar();
66 echo '</div>';
67 echo $args['after_widget'];
68
69 ++self::$instance;
70 }
71
72 /**
73 * Handles updating settings for the current Calendar widget instance.
74 *
75 * @since 2.8.0
76 *
77 * @param array $new_instance New settings for this instance as input by the user via
78 * WP_Widget::form().
79 * @param array $old_instance Old settings for this instance.
80 * @return array Updated settings to save.
81 */
82 public function update( $new_instance, $old_instance ) {
83 $instance = $old_instance;
84 $instance['title'] = sanitize_text_field( $new_instance['title'] );
85
86 return $instance;
87 }
88
89 /**
90 * Outputs the settings form for the Calendar widget.
91 *
92 * @since 2.8.0
93 *
94 * @param array $instance Current settings.
95 */
96 public function form( $instance ) {
97 $instance = wp_parse_args( (array) $instance, array( 'title' => '' ) );
98 ?>
99 <p>
100 <label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
101 <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'] ); ?>" />
102 </p>
103 <?php
104 }
105}
106