1<?php
  2/**
  3 * Widget API: WP_Widget_Search class
  4 *
  5 * @package WordPress
  6 * @subpackage Widgets
  7 * @since 4.4.0
  8 */
  9
 10/**
 11 * Core class used to implement a Search widget.
 12 *
 13 * @since 2.8.0
 14 *
 15 * @see WP_Widget
 16 */
 17class WP_Widget_Search extends WP_Widget {
 18
 19	/**
 20	 * Sets up a new Search widget instance.
 21	 *
 22	 * @since 2.8.0
 23	 */
 24	public function __construct() {
 25		$widget_ops = array(
 26			'classname'                   => 'widget_search',
 27			'description'                 => __( 'A search form for your site.' ),
 28			'customize_selective_refresh' => true,
 29			'show_instance_in_rest'       => true,
 30		);
 31		parent::__construct( 'search', _x( 'Search', 'Search widget' ), $widget_ops );
 32	}
 33
 34	/**
 35	 * Outputs the content for the current Search widget instance.
 36	 *
 37	 * @since 2.8.0
 38	 *
 39	 * @param array $args     Display arguments including 'before_title', 'after_title',
 40	 *                        'before_widget', and 'after_widget'.
 41	 * @param array $instance Settings for the current Search widget instance.
 42	 */
 43	public function widget( $args, $instance ) {
 44		$title = ! empty( $instance['title'] ) ? $instance['title'] : '';
 45
 46		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
 47		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
 48
 49		echo $args['before_widget'];
 50		if ( $title ) {
 51			echo $args['before_title'] . $title . $args['after_title'];
 52		}
 53
 54		// Use active theme search form if it exists.
 55		get_search_form();
 56
 57		echo $args['after_widget'];
 58	}
 59
 60	/**
 61	 * Outputs the settings form for the Search widget.
 62	 *
 63	 * @since 2.8.0
 64	 *
 65	 * @param array $instance Current settings.
 66	 */
 67	public function form( $instance ) {
 68		$instance = wp_parse_args( (array) $instance, array( 'title' => '' ) );
 69		$title    = $instance['title'];
 70		?>
 71		<p>
 72			<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
 73			<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( $title ); ?>" />
 74		</p>
 75		<?php
 76	}
 77
 78	/**
 79	 * Handles updating settings for the current Search widget instance.
 80	 *
 81	 * @since 2.8.0
 82	 *
 83	 * @param array $new_instance New settings for this instance as input by the user via
 84	 *                            WP_Widget::form().
 85	 * @param array $old_instance Old settings for this instance.
 86	 * @return array Updated settings.
 87	 */
 88	public function update( $new_instance, $old_instance ) {
 89		$instance          = $old_instance;
 90		$new_instance      = wp_parse_args( (array) $new_instance, array( 'title' => '' ) );
 91		$instance['title'] = sanitize_text_field( $new_instance['title'] );
 92		return $instance;
 93	}
 94}
 95