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   1  <?php
   2  /**
   3   * Widget API: WP_Widget_Archives class
   4   *
   5   * @package WordPress
   6   * @subpackage Widgets
   7   * @since 4.4.0
   8   */
   9  
  10  /**
  11   * Core class used to implement the Archives widget.
  12   *
  13   * @since 2.8.0
  14   *
  15   * @see WP_Widget
  16   */
  17  class WP_Widget_Archives extends WP_Widget {
  18  
  19      /**
  20       * Sets up a new Archives widget instance.
  21       *
  22       * @since 2.8.0
  23       */
  24  	public function __construct() {
  25          $widget_ops = array(
  26              'classname'                   => 'widget_archive',
  27              'description'                 => __( 'A monthly archive of your site&#8217;s Posts.' ),
  28              'customize_selective_refresh' => true,
  29              'show_instance_in_rest'       => true,
  30          );
  31          parent::__construct( 'archives', __( 'Archives' ), $widget_ops );
  32      }
  33  
  34      /**
  35       * Outputs the content for the current Archives 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 Archives widget instance.
  42       */
  43  	public function widget( $args, $instance ) {
  44          $default_title = __( 'Archives' );
  45          $title         = ! empty( $instance['title'] ) ? $instance['title'] : $default_title;
  46  
  47          /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
  48          $title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
  49  
  50          $count    = ! empty( $instance['count'] ) ? '1' : '0';
  51          $dropdown = ! empty( $instance['dropdown'] ) ? '1' : '0';
  52  
  53          echo $args['before_widget'];
  54  
  55          if ( $title ) {
  56              echo $args['before_title'] . $title . $args['after_title'];
  57          }
  58  
  59          if ( $dropdown ) {
  60              $dropdown_id = "{$this->id_base}-dropdown-{$this->number}";
  61              ?>
  62          <label class="screen-reader-text" for="<?php echo esc_attr( $dropdown_id ); ?>"><?php echo $title; ?></label>
  63          <select id="<?php echo esc_attr( $dropdown_id ); ?>" name="archive-dropdown">
  64              <?php
  65              /**
  66               * Filters the arguments for the Archives widget drop-down.
  67               *
  68               * @since 2.8.0
  69               * @since 4.9.0 Added the `$instance` parameter.
  70               *
  71               * @see wp_get_archives()
  72               *
  73               * @param array $args     An array of Archives widget drop-down arguments.
  74               * @param array $instance Settings for the current Archives widget instance.
  75               */
  76              $dropdown_args = apply_filters(
  77                  'widget_archives_dropdown_args',
  78                  array(
  79                      'type'            => 'monthly',
  80                      'format'          => 'option',
  81                      'show_post_count' => $count,
  82                  ),
  83                  $instance
  84              );
  85  
  86              switch ( $dropdown_args['type'] ) {
  87                  case 'yearly':
  88                      $label = __( 'Select Year' );
  89                      break;
  90                  case 'monthly':
  91                      $label = __( 'Select Month' );
  92                      break;
  93                  case 'daily':
  94                      $label = __( 'Select Day' );
  95                      break;
  96                  case 'weekly':
  97                      $label = __( 'Select Week' );
  98                      break;
  99                  default:
 100                      $label = __( 'Select Post' );
 101                      break;
 102              }
 103  
 104              $type_attr = current_theme_supports( 'html5', 'script' ) ? '' : ' type="text/javascript"';
 105              ?>
 106  
 107              <option value=""><?php echo esc_html( $label ); ?></option>
 108              <?php wp_get_archives( $dropdown_args ); ?>
 109  
 110          </select>
 111  
 112  <script<?php echo $type_attr; ?>>
 113  /* <![CDATA[ */
 114  (function() {
 115      var dropdown = document.getElementById( "<?php echo esc_js( $dropdown_id ); ?>" );
 116  	function onSelectChange() {
 117          if ( dropdown.options[ dropdown.selectedIndex ].value !== '' ) {
 118              document.location.href = this.options[ this.selectedIndex ].value;
 119          }
 120      }
 121      dropdown.onchange = onSelectChange;
 122  })();
 123  /* ]]> */
 124  </script>
 125              <?php
 126          } else {
 127              $format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';
 128  
 129              /** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */
 130              $format = apply_filters( 'navigation_widgets_format', $format );
 131  
 132              if ( 'html5' === $format ) {
 133                  // The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
 134                  $title      = trim( strip_tags( $title ) );
 135                  $aria_label = $title ? $title : $default_title;
 136                  echo '<nav role="navigation" aria-label="' . esc_attr( $aria_label ) . '">';
 137              }
 138              ?>
 139  
 140              <ul>
 141                  <?php
 142                  wp_get_archives(
 143                      /**
 144                       * Filters the arguments for the Archives widget.
 145                       *
 146                       * @since 2.8.0
 147                       * @since 4.9.0 Added the `$instance` parameter.
 148                       *
 149                       * @see wp_get_archives()
 150                       *
 151                       * @param array $args     An array of Archives option arguments.
 152                       * @param array $instance Array of settings for the current widget.
 153                       */
 154                      apply_filters(
 155                          'widget_archives_args',
 156                          array(
 157                              'type'            => 'monthly',
 158                              'show_post_count' => $count,
 159                          ),
 160                          $instance
 161                      )
 162                  );
 163                  ?>
 164              </ul>
 165  
 166              <?php
 167              if ( 'html5' === $format ) {
 168                  echo '</nav>';
 169              }
 170          }
 171  
 172          echo $args['after_widget'];
 173      }
 174  
 175      /**
 176       * Handles updating settings for the current Archives widget instance.
 177       *
 178       * @since 2.8.0
 179       *
 180       * @param array $new_instance New settings for this instance as input by the user via
 181       *                            WP_Widget_Archives::form().
 182       * @param array $old_instance Old settings for this instance.
 183       * @return array Updated settings to save.
 184       */
 185  	public function update( $new_instance, $old_instance ) {
 186          $instance             = $old_instance;
 187          $new_instance         = wp_parse_args(
 188              (array) $new_instance,
 189              array(
 190                  'title'    => '',
 191                  'count'    => 0,
 192                  'dropdown' => '',
 193              )
 194          );
 195          $instance['title']    = sanitize_text_field( $new_instance['title'] );
 196          $instance['count']    = $new_instance['count'] ? 1 : 0;
 197          $instance['dropdown'] = $new_instance['dropdown'] ? 1 : 0;
 198  
 199          return $instance;
 200      }
 201  
 202      /**
 203       * Outputs the settings form for the Archives widget.
 204       *
 205       * @since 2.8.0
 206       *
 207       * @param array $instance Current settings.
 208       */
 209  	public function form( $instance ) {
 210          $instance = wp_parse_args(
 211              (array) $instance,
 212              array(
 213                  'title'    => '',
 214                  'count'    => 0,
 215                  'dropdown' => '',
 216              )
 217          );
 218          ?>
 219          <p>
 220              <label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
 221              <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( $instance['title'] ); ?>" />
 222          </p>
 223          <p>
 224              <input class="checkbox" type="checkbox"<?php checked( $instance['dropdown'] ); ?> id="<?php echo $this->get_field_id( 'dropdown' ); ?>" name="<?php echo $this->get_field_name( 'dropdown' ); ?>" />
 225              <label for="<?php echo $this->get_field_id( 'dropdown' ); ?>"><?php _e( 'Display as dropdown' ); ?></label>
 226              <br/>
 227              <input class="checkbox" type="checkbox"<?php checked( $instance['count'] ); ?> id="<?php echo $this->get_field_id( 'count' ); ?>" name="<?php echo $this->get_field_name( 'count' ); ?>" />
 228              <label for="<?php echo $this->get_field_id( 'count' ); ?>"><?php _e( 'Show post counts' ); ?></label>
 229          </p>
 230          <?php
 231      }
 232  }