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class-wp-widget-pages.php (5739B)

---

 <?php
 /**
  * Widget API: WP_Widget_Pages class
  *
  * @package WordPress
  * @subpackage Widgets
  * @since 4.4.0
  */
 
 /**
  * Core class used to implement a Pages widget.
  *
  * @since 2.8.0
  *
  * @see WP_Widget
  */
 class WP_Widget_Pages extends WP_Widget {
 
 	/**
 	 * Sets up a new Pages widget instance.
 	 *
 	 * @since 2.8.0
 	 */
 	public function __construct() {
 		$widget_ops = array(
 			'classname'                   => 'widget_pages',
 			'description'                 => __( 'A list of your site&#8217;s Pages.' ),
 			'customize_selective_refresh' => true,
 			'show_instance_in_rest'       => true,
 		);
 		parent::__construct( 'pages', __( 'Pages' ), $widget_ops );
 	}
 
 	/**
 	 * Outputs the content for the current Pages 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 Pages widget instance.
 	 */
 	public function widget( $args, $instance ) {
 		$default_title = __( 'Pages' );
 		$title         = ! empty( $instance['title'] ) ? $instance['title'] : $default_title;
 
 		/**
 		 * Filters the widget title.
 		 *
 		 * @since 2.6.0
 		 *
 		 * @param string $title    The widget title. Default 'Pages'.
 		 * @param array  $instance Array of settings for the current widget.
 		 * @param mixed  $id_base  The widget ID.
 		 */
 		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
 
 		$sortby  = empty( $instance['sortby'] ) ? 'menu_order' : $instance['sortby'];
 		$exclude = empty( $instance['exclude'] ) ? '' : $instance['exclude'];
 
 		if ( 'menu_order' === $sortby ) {
 			$sortby = 'menu_order, post_title';
 		}
 
 		$output = wp_list_pages(
 			/**
 			 * Filters the arguments for the Pages widget.
 			 *
 			 * @since 2.8.0
 			 * @since 4.9.0 Added the `$instance` parameter.
 			 *
 			 * @see wp_list_pages()
 			 *
 			 * @param array $args     An array of arguments to retrieve the pages list.
 			 * @param array $instance Array of settings for the current widget.
 			 */
 			apply_filters(
 				'widget_pages_args',
 				array(
 					'title_li'    => '',
 					'echo'        => 0,
 					'sort_column' => $sortby,
 					'exclude'     => $exclude,
 				),
 				$instance
 			)
 		);
 
 		if ( ! empty( $output ) ) {
 			echo $args['before_widget'];
 			if ( $title ) {
 				echo $args['before_title'] . $title . $args['after_title'];
 			}
 
 			$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';
 
 			/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */
 			$format = apply_filters( 'navigation_widgets_format', $format );
 
 			if ( 'html5' === $format ) {
 				// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
 				$title      = trim( strip_tags( $title ) );
 				$aria_label = $title ? $title : $default_title;
 				echo '<nav role="navigation" aria-label="' . esc_attr( $aria_label ) . '">';
 			}
 			?>
 
 			<ul>
 				<?php echo $output; ?>
 			</ul>
 
 			<?php
 			if ( 'html5' === $format ) {
 				echo '</nav>';
 			}
 
 			echo $args['after_widget'];
 		}
 	}
 
 	/**
 	 * Handles updating settings for the current Pages 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'] );
 		if ( in_array( $new_instance['sortby'], array( 'post_title', 'menu_order', 'ID' ), true ) ) {
 			$instance['sortby'] = $new_instance['sortby'];
 		} else {
 			$instance['sortby'] = 'menu_order';
 		}
 
 		$instance['exclude'] = sanitize_text_field( $new_instance['exclude'] );
 
 		return $instance;
 	}
 
 	/**
 	 * Outputs the settings form for the Pages widget.
 	 *
 	 * @since 2.8.0
 	 *
 	 * @param array $instance Current settings.
 	 */
 	public function form( $instance ) {
 		// Defaults.
 		$instance = wp_parse_args(
 			(array) $instance,
 			array(
 				'sortby'  => 'post_title',
 				'title'   => '',
 				'exclude' => '',
 			)
 		);
 		?>
 		<p>
 			<label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php _e( 'Title:' ); ?></label>
 			<input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $instance['title'] ); ?>" />
 		</p>
 
 		<p>
 			<label for="<?php echo esc_attr( $this->get_field_id( 'sortby' ) ); ?>"><?php _e( 'Sort by:' ); ?></label>
 			<select name="<?php echo esc_attr( $this->get_field_name( 'sortby' ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( 'sortby' ) ); ?>" class="widefat">
 				<option value="post_title"<?php selected( $instance['sortby'], 'post_title' ); ?>><?php _e( 'Page title' ); ?></option>
 				<option value="menu_order"<?php selected( $instance['sortby'], 'menu_order' ); ?>><?php _e( 'Page order' ); ?></option>
 				<option value="ID"<?php selected( $instance['sortby'], 'ID' ); ?>><?php _e( 'Page ID' ); ?></option>
 			</select>
 		</p>
 
 		<p>
 			<label for="<?php echo esc_attr( $this->get_field_id( 'exclude' ) ); ?>"><?php _e( 'Exclude:' ); ?></label>
 			<input type="text" value="<?php echo esc_attr( $instance['exclude'] ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'exclude' ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( 'exclude' ) ); ?>" class="widefat" />
 			<br />
 			<small><?php _e( 'Page IDs, separated by commas.' ); ?></small>
 		</p>
 		<?php
 	}
 
 }