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   1  <?php
   2  /**
   3   * Widget API: WP_Widget_Links class
   4   *
   5   * @package WordPress
   6   * @subpackage Widgets
   7   * @since 4.4.0
   8   */
   9  
  10  /**
  11   * Core class used to implement a Links widget.
  12   *
  13   * @since 2.8.0
  14   *
  15   * @see WP_Widget
  16   */
  17  class WP_Widget_Links extends WP_Widget {
  18  
  19      /**
  20       * Sets up a new Links widget instance.
  21       *
  22       * @since 2.8.0
  23       */
  24  	public function __construct() {
  25          $widget_ops = array(
  26              'description'                 => __( 'Your blogroll' ),
  27              'customize_selective_refresh' => true,
  28          );
  29          parent::__construct( 'links', __( 'Links' ), $widget_ops );
  30      }
  31  
  32      /**
  33       * Outputs the content for the current Links widget instance.
  34       *
  35       * @since 2.8.0
  36       *
  37       * @param array $args     Display arguments including 'before_title', 'after_title',
  38       *                        'before_widget', and 'after_widget'.
  39       * @param array $instance Settings for the current Links widget instance.
  40       */
  41  	public function widget( $args, $instance ) {
  42          $show_description = isset( $instance['description'] ) ? $instance['description'] : false;
  43          $show_name        = isset( $instance['name'] ) ? $instance['name'] : false;
  44          $show_rating      = isset( $instance['rating'] ) ? $instance['rating'] : false;
  45          $show_images      = isset( $instance['images'] ) ? $instance['images'] : true;
  46          $category         = isset( $instance['category'] ) ? $instance['category'] : false;
  47          $orderby          = isset( $instance['orderby'] ) ? $instance['orderby'] : 'name';
  48          $order            = 'rating' === $orderby ? 'DESC' : 'ASC';
  49          $limit            = isset( $instance['limit'] ) ? $instance['limit'] : -1;
  50  
  51          $before_widget = preg_replace( '/id="[^"]*"/', 'id="%id"', $args['before_widget'] );
  52  
  53          $widget_links_args = array(
  54              'title_before'     => $args['before_title'],
  55              'title_after'      => $args['after_title'],
  56              'category_before'  => $before_widget,
  57              'category_after'   => $args['after_widget'],
  58              'show_images'      => $show_images,
  59              'show_description' => $show_description,
  60              'show_name'        => $show_name,
  61              'show_rating'      => $show_rating,
  62              'category'         => $category,
  63              'class'            => 'linkcat widget',
  64              'orderby'          => $orderby,
  65              'order'            => $order,
  66              'limit'            => $limit,
  67          );
  68  
  69          /**
  70           * Filters the arguments for the Links widget.
  71           *
  72           * @since 2.6.0
  73           * @since 4.4.0 Added the `$instance` parameter.
  74           *
  75           * @see wp_list_bookmarks()
  76           *
  77           * @param array $widget_links_args An array of arguments to retrieve the links list.
  78           * @param array $instance          The settings for the particular instance of the widget.
  79           */
  80          wp_list_bookmarks( apply_filters( 'widget_links_args', $widget_links_args, $instance ) );
  81      }
  82  
  83      /**
  84       * Handles updating settings for the current Links widget instance.
  85       *
  86       * @since 2.8.0
  87       *
  88       * @param array $new_instance New settings for this instance as input by the user via
  89       *                            WP_Widget::form().
  90       * @param array $old_instance Old settings for this instance.
  91       * @return array Updated settings to save.
  92       */
  93  	public function update( $new_instance, $old_instance ) {
  94          $new_instance = (array) $new_instance;
  95          $instance     = array(
  96              'images'      => 0,
  97              'name'        => 0,
  98              'description' => 0,
  99              'rating'      => 0,
 100          );
 101          foreach ( $instance as $field => $val ) {
 102              if ( isset( $new_instance[ $field ] ) ) {
 103                  $instance[ $field ] = 1;
 104              }
 105          }
 106  
 107          $instance['orderby'] = 'name';
 108          if ( in_array( $new_instance['orderby'], array( 'name', 'rating', 'id', 'rand' ), true ) ) {
 109              $instance['orderby'] = $new_instance['orderby'];
 110          }
 111  
 112          $instance['category'] = (int) $new_instance['category'];
 113          $instance['limit']    = ! empty( $new_instance['limit'] ) ? (int) $new_instance['limit'] : -1;
 114  
 115          return $instance;
 116      }
 117  
 118      /**
 119       * Outputs the settings form for the Links widget.
 120       *
 121       * @since 2.8.0
 122       *
 123       * @param array $instance Current settings.
 124       */
 125  	public function form( $instance ) {
 126  
 127          // Defaults.
 128          $instance  = wp_parse_args(
 129              (array) $instance,
 130              array(
 131                  'images'      => true,
 132                  'name'        => true,
 133                  'description' => false,
 134                  'rating'      => false,
 135                  'category'    => false,
 136                  'orderby'     => 'name',
 137                  'limit'       => -1,
 138              )
 139          );
 140          $link_cats = get_terms( array( 'taxonomy' => 'link_category' ) );
 141          $limit     = (int) $instance['limit'];
 142          if ( ! $limit ) {
 143              $limit = -1;
 144          }
 145          ?>
 146          <p>
 147              <label for="<?php echo $this->get_field_id( 'category' ); ?>"><?php _e( 'Select Link Category:' ); ?></label>
 148              <select class="widefat" id="<?php echo $this->get_field_id( 'category' ); ?>" name="<?php echo $this->get_field_name( 'category' ); ?>">
 149                  <option value=""><?php _ex( 'All Links', 'links widget' ); ?></option>
 150                  <?php foreach ( $link_cats as $link_cat ) : ?>
 151                      <option value="<?php echo (int) $link_cat->term_id; ?>" <?php selected( $instance['category'], $link_cat->term_id ); ?>>
 152                          <?php echo esc_html( $link_cat->name ); ?>
 153                      </option>
 154                  <?php endforeach; ?>
 155              </select>
 156              <label for="<?php echo $this->get_field_id( 'orderby' ); ?>"><?php _e( 'Sort by:' ); ?></label>
 157              <select name="<?php echo $this->get_field_name( 'orderby' ); ?>" id="<?php echo $this->get_field_id( 'orderby' ); ?>" class="widefat">
 158                  <option value="name"<?php selected( $instance['orderby'], 'name' ); ?>><?php _e( 'Link title' ); ?></option>
 159                  <option value="rating"<?php selected( $instance['orderby'], 'rating' ); ?>><?php _e( 'Link rating' ); ?></option>
 160                  <option value="id"<?php selected( $instance['orderby'], 'id' ); ?>><?php _e( 'Link ID' ); ?></option>
 161                  <option value="rand"<?php selected( $instance['orderby'], 'rand' ); ?>><?php _ex( 'Random', 'Links widget' ); ?></option>
 162              </select>
 163          </p>
 164  
 165          <p>
 166              <input class="checkbox" type="checkbox"<?php checked( $instance['images'], true ); ?> id="<?php echo $this->get_field_id( 'images' ); ?>" name="<?php echo $this->get_field_name( 'images' ); ?>" />
 167              <label for="<?php echo $this->get_field_id( 'images' ); ?>"><?php _e( 'Show Link Image' ); ?></label>
 168              <br />
 169  
 170              <input class="checkbox" type="checkbox"<?php checked( $instance['name'], true ); ?> id="<?php echo $this->get_field_id( 'name' ); ?>" name="<?php echo $this->get_field_name( 'name' ); ?>" />
 171              <label for="<?php echo $this->get_field_id( 'name' ); ?>"><?php _e( 'Show Link Name' ); ?></label>
 172              <br />
 173  
 174              <input class="checkbox" type="checkbox"<?php checked( $instance['description'], true ); ?> id="<?php echo $this->get_field_id( 'description' ); ?>" name="<?php echo $this->get_field_name( 'description' ); ?>" />
 175              <label for="<?php echo $this->get_field_id( 'description' ); ?>"><?php _e( 'Show Link Description' ); ?></label>
 176              <br />
 177  
 178              <input class="checkbox" type="checkbox"<?php checked( $instance['rating'], true ); ?> id="<?php echo $this->get_field_id( 'rating' ); ?>" name="<?php echo $this->get_field_name( 'rating' ); ?>" />
 179              <label for="<?php echo $this->get_field_id( 'rating' ); ?>"><?php _e( 'Show Link Rating' ); ?></label>
 180          </p>
 181  
 182          <p>
 183              <label for="<?php echo $this->get_field_id( 'limit' ); ?>"><?php _e( 'Number of links to show:' ); ?></label>
 184              <input id="<?php echo $this->get_field_id( 'limit' ); ?>" name="<?php echo $this->get_field_name( 'limit' ); ?>" type="text" value="<?php echo ( -1 !== $limit ) ? (int) $limit : ''; ?>" size="3" />
 185          </p>
 186          <?php
 187      }
 188  }