class-wp-widget-calendar.php
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<?php
/**
* Widget API: WP_Widget_Calendar class
*
* @package WordPress
* @subpackage Widgets
* @since 4.4.0
*/
/**
* Core class used to implement the Calendar widget.
*
* @since 2.8.0
*
* @see WP_Widget
*/
class WP_Widget_Calendar extends WP_Widget {
/**
* Ensure that the ID attribute only appears in the markup once
*
* @since 4.4.0
* @var int
*/
private static $instance = 0;
/**
* Sets up a new Calendar widget instance.
*
* @since 2.8.0
*/
public function __construct() {
$widget_ops = array(
'classname' => 'widget_calendar',
'description' => __( 'A calendar of your site’s posts.' ),
'customize_selective_refresh' => true,
'show_instance_in_rest' => true,
);
parent::__construct( 'calendar', __( 'Calendar' ), $widget_ops );
}
/**
* Outputs the content for the current Calendar widget instance.
*
* @since 2.8.0
*
* @param array $args Display arguments including 'before_title', 'after_title',
* 'before_widget', and 'after_widget'.
* @param array $instance The settings for the particular instance of the widget.
*/
public function widget( $args, $instance ) {
$title = ! empty( $instance['title'] ) ? $instance['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 . $args['after_title'];
}
if ( 0 === self::$instance ) {
echo '<div id="calendar_wrap" class="calendar_wrap">';
} else {
echo '<div class="calendar_wrap">';
}
get_calendar();
echo '</div>';
echo $args['after_widget'];
self::$instance++;
}
/**
* Handles updating settings for the current Calendar 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 Calendar 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
}
}