<?php
/**
* Widget API: WP_Widget_Search class
*
* @package WordPress
* @subpackage Widgets
* @since 4.4.0
*/

/**
* Core class used to implement a Search widget.
*
* @since 2.8.0
*
* @see WP_Widget
*/
class WP_Widget_Search extends WP_Widget {

/**
* Sets up a new Search widget instance.
*
* @since 2.8.0
*/
public function __construct() {
$widget_ops = array(
'classname' => 'widget_search',
'description' => __( 'A search form for your site.' ),
'customize_selective_refresh' => true,
'show_instance_in_rest' => true,
);
parent::__construct( 'search', _x( 'Search', 'Search widget' ), $widget_ops );
}

/**
* Outputs the content for the current Search 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 Search widget instance.
*/
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'];
}

// Use active theme search form if it exists.
get_search_form();

echo $args['after_widget'];
}

/**
* Outputs the settings form for the Search widget.
*
* @since 2.8.0
*
* @param array $instance Current settings.
*/
public function form( $instance ) {
$instance = wp_parse_args( (array) $instance, array( 'title' => '' ) );
$title = $instance['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( $title ); ?>" />
</p>
<?php
}

/**
* Handles updating settings for the current Search 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.
*/
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$new_instance = wp_parse_args( (array) $new_instance, array( 'title' => '' ) );
$instance['title'] = sanitize_text_field( $new_instance['title'] );
return $instance;
}
}