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   1  <?php
   2  /**
   3   * Widget API: WP_Widget_Recent_Posts class
   4   *
   5   * @package WordPress
   6   * @subpackage Widgets
   7   * @since 4.4.0
   8   */
   9  
  10  /**
  11   * Core class used to implement a Recent Posts widget.
  12   *
  13   * @since 2.8.0
  14   *
  15   * @see WP_Widget
  16   */
  17  class WP_Widget_Recent_Posts extends WP_Widget {
  18  
  19      /**
  20       * Sets up a new Recent Posts widget instance.
  21       *
  22       * @since 2.8.0
  23       */
  24  	public function __construct() {
  25          $widget_ops = array(
  26              'classname'                   => 'widget_recent_entries',
  27              'description'                 => __( 'Your site&#8217;s most recent Posts.' ),
  28              'customize_selective_refresh' => true,
  29              'show_instance_in_rest'       => true,
  30          );
  31          parent::__construct( 'recent-posts', __( 'Recent Posts' ), $widget_ops );
  32          $this->alt_option_name = 'widget_recent_entries';
  33      }
  34  
  35      /**
  36       * Outputs the content for the current Recent Posts widget instance.
  37       *
  38       * @since 2.8.0
  39       *
  40       * @param array $args     Display arguments including 'before_title', 'after_title',
  41       *                        'before_widget', and 'after_widget'.
  42       * @param array $instance Settings for the current Recent Posts widget instance.
  43       */
  44  	public function widget( $args, $instance ) {
  45          if ( ! isset( $args['widget_id'] ) ) {
  46              $args['widget_id'] = $this->id;
  47          }
  48  
  49          $default_title = __( 'Recent Posts' );
  50          $title         = ( ! empty( $instance['title'] ) ) ? $instance['title'] : $default_title;
  51  
  52          /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
  53          $title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
  54  
  55          $number = ( ! empty( $instance['number'] ) ) ? absint( $instance['number'] ) : 5;
  56          if ( ! $number ) {
  57              $number = 5;
  58          }
  59          $show_date = isset( $instance['show_date'] ) ? $instance['show_date'] : false;
  60  
  61          $r = new WP_Query(
  62              /**
  63               * Filters the arguments for the Recent Posts widget.
  64               *
  65               * @since 3.4.0
  66               * @since 4.9.0 Added the `$instance` parameter.
  67               *
  68               * @see WP_Query::get_posts()
  69               *
  70               * @param array $args     An array of arguments used to retrieve the recent posts.
  71               * @param array $instance Array of settings for the current widget.
  72               */
  73              apply_filters(
  74                  'widget_posts_args',
  75                  array(
  76                      'posts_per_page'      => $number,
  77                      'no_found_rows'       => true,
  78                      'post_status'         => 'publish',
  79                      'ignore_sticky_posts' => true,
  80                  ),
  81                  $instance
  82              )
  83          );
  84  
  85          if ( ! $r->have_posts() ) {
  86              return;
  87          }
  88          ?>
  89  
  90          <?php echo $args['before_widget']; ?>
  91  
  92          <?php
  93          if ( $title ) {
  94              echo $args['before_title'] . $title . $args['after_title'];
  95          }
  96  
  97          $format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';
  98  
  99          /** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */
 100          $format = apply_filters( 'navigation_widgets_format', $format );
 101  
 102          if ( 'html5' === $format ) {
 103              // The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
 104              $title      = trim( strip_tags( $title ) );
 105              $aria_label = $title ? $title : $default_title;
 106              echo '<nav role="navigation" aria-label="' . esc_attr( $aria_label ) . '">';
 107          }
 108          ?>
 109  
 110          <ul>
 111              <?php foreach ( $r->posts as $recent_post ) : ?>
 112                  <?php
 113                  $post_title   = get_the_title( $recent_post->ID );
 114                  $title        = ( ! empty( $post_title ) ) ? $post_title : __( '(no title)' );
 115                  $aria_current = '';
 116  
 117                  if ( get_queried_object_id() === $recent_post->ID ) {
 118                      $aria_current = ' aria-current="page"';
 119                  }
 120                  ?>
 121                  <li>
 122                      <a href="<?php the_permalink( $recent_post->ID ); ?>"<?php echo $aria_current; ?>><?php echo $title; ?></a>
 123                      <?php if ( $show_date ) : ?>
 124                          <span class="post-date"><?php echo get_the_date( '', $recent_post->ID ); ?></span>
 125                      <?php endif; ?>
 126                  </li>
 127              <?php endforeach; ?>
 128          </ul>
 129  
 130          <?php
 131          if ( 'html5' === $format ) {
 132              echo '</nav>';
 133          }
 134  
 135          echo $args['after_widget'];
 136      }
 137  
 138      /**
 139       * Handles updating the settings for the current Recent Posts widget instance.
 140       *
 141       * @since 2.8.0
 142       *
 143       * @param array $new_instance New settings for this instance as input by the user via
 144       *                            WP_Widget::form().
 145       * @param array $old_instance Old settings for this instance.
 146       * @return array Updated settings to save.
 147       */
 148  	public function update( $new_instance, $old_instance ) {
 149          $instance              = $old_instance;
 150          $instance['title']     = sanitize_text_field( $new_instance['title'] );
 151          $instance['number']    = (int) $new_instance['number'];
 152          $instance['show_date'] = isset( $new_instance['show_date'] ) ? (bool) $new_instance['show_date'] : false;
 153          return $instance;
 154      }
 155  
 156      /**
 157       * Outputs the settings form for the Recent Posts widget.
 158       *
 159       * @since 2.8.0
 160       *
 161       * @param array $instance Current settings.
 162       */
 163  	public function form( $instance ) {
 164          $title     = isset( $instance['title'] ) ? esc_attr( $instance['title'] ) : '';
 165          $number    = isset( $instance['number'] ) ? absint( $instance['number'] ) : 5;
 166          $show_date = isset( $instance['show_date'] ) ? (bool) $instance['show_date'] : false;
 167          ?>
 168          <p>
 169              <label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
 170              <input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo $title; ?>" />
 171          </p>
 172  
 173          <p>
 174              <label for="<?php echo $this->get_field_id( 'number' ); ?>"><?php _e( 'Number of posts to show:' ); ?></label>
 175              <input class="tiny-text" id="<?php echo $this->get_field_id( 'number' ); ?>" name="<?php echo $this->get_field_name( 'number' ); ?>" type="number" step="1" min="1" value="<?php echo $number; ?>" size="3" />
 176          </p>
 177  
 178          <p>
 179              <input class="checkbox" type="checkbox"<?php checked( $show_date ); ?> id="<?php echo $this->get_field_id( 'show_date' ); ?>" name="<?php echo $this->get_field_name( 'show_date' ); ?>" />
 180              <label for="<?php echo $this->get_field_id( 'show_date' ); ?>"><?php _e( 'Display post date?' ); ?></label>
 181          </p>
 182          <?php
 183      }
 184  }