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   1  <?php
   2  /**
   3   * Custom Twenty Sixteen template tags
   4   *
   5   * Eventually, some of the functionality here could be replaced by core features.
   6   *
   7   * @package WordPress
   8   * @subpackage Twenty_Sixteen
   9   * @since Twenty Sixteen 1.0
  10   */
  11  
  12  if ( ! function_exists( 'twentysixteen_entry_meta' ) ) :
  13      /**
  14       * Prints HTML with meta information for the categories, tags.
  15       *
  16       * Create your own twentysixteen_entry_meta() function to override in a child theme.
  17       *
  18       * @since Twenty Sixteen 1.0
  19       */
  20  	function twentysixteen_entry_meta() {
  21          if ( 'post' === get_post_type() ) {
  22              $author_avatar_size = apply_filters( 'twentysixteen_author_avatar_size', 49 );
  23              printf(
  24                  '<span class="byline"><span class="author vcard">%1$s<span class="screen-reader-text">%2$s </span> <a class="url fn n" href="%3$s">%4$s</a></span></span>',
  25                  get_avatar( get_the_author_meta( 'user_email' ), $author_avatar_size ),
  26                  _x( 'Author', 'Used before post author name.', 'twentysixteen' ),
  27                  esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
  28                  get_the_author()
  29              );
  30          }
  31  
  32          if ( in_array( get_post_type(), array( 'post', 'attachment' ), true ) ) {
  33              twentysixteen_entry_date();
  34          }
  35  
  36          $format = get_post_format();
  37          if ( current_theme_supports( 'post-formats', $format ) ) {
  38              printf(
  39                  '<span class="entry-format">%1$s<a href="%2$s">%3$s</a></span>',
  40                  sprintf( '<span class="screen-reader-text">%s </span>', _x( 'Format', 'Used before post format.', 'twentysixteen' ) ),
  41                  esc_url( get_post_format_link( $format ) ),
  42                  get_post_format_string( $format )
  43              );
  44          }
  45  
  46          if ( 'post' === get_post_type() ) {
  47              twentysixteen_entry_taxonomies();
  48          }
  49  
  50          if ( ! is_singular() && ! post_password_required() && ( comments_open() || get_comments_number() ) ) {
  51              echo '<span class="comments-link">';
  52              /* translators: %s: Post title. Only visible to screen readers. */
  53              comments_popup_link( sprintf( __( 'Leave a comment<span class="screen-reader-text"> on %s</span>', 'twentysixteen' ), get_the_title() ) );
  54              echo '</span>';
  55          }
  56      }
  57  endif;
  58  
  59  if ( ! function_exists( 'twentysixteen_entry_date' ) ) :
  60      /**
  61       * Prints HTML with date information for current post.
  62       *
  63       * Create your own twentysixteen_entry_date() function to override in a child theme.
  64       *
  65       * @since Twenty Sixteen 1.0
  66       */
  67  	function twentysixteen_entry_date() {
  68          $time_string = '<time class="entry-date published updated" datetime="%1$s">%2$s</time>';
  69  
  70          if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) {
  71              $time_string = '<time class="entry-date published" datetime="%1$s">%2$s</time><time class="updated" datetime="%3$s">%4$s</time>';
  72          }
  73  
  74          $time_string = sprintf(
  75              $time_string,
  76              esc_attr( get_the_date( 'c' ) ),
  77              get_the_date(),
  78              esc_attr( get_the_modified_date( 'c' ) ),
  79              get_the_modified_date()
  80          );
  81  
  82          printf(
  83              '<span class="posted-on"><span class="screen-reader-text">%1$s </span><a href="%2$s" rel="bookmark">%3$s</a></span>',
  84              _x( 'Posted on', 'Used before publish date.', 'twentysixteen' ),
  85              esc_url( get_permalink() ),
  86              $time_string
  87          );
  88      }
  89  endif;
  90  
  91  if ( ! function_exists( 'twentysixteen_entry_taxonomies' ) ) :
  92      /**
  93       * Prints HTML with category and tags for current post.
  94       *
  95       * Create your own twentysixteen_entry_taxonomies() function to override in a child theme.
  96       *
  97       * @since Twenty Sixteen 1.0
  98       */
  99  	function twentysixteen_entry_taxonomies() {
 100          $categories_list = get_the_category_list( _x( ', ', 'Used between list items, there is a space after the comma.', 'twentysixteen' ) );
 101          if ( $categories_list && twentysixteen_categorized_blog() ) {
 102              printf(
 103                  '<span class="cat-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
 104                  _x( 'Categories', 'Used before category names.', 'twentysixteen' ),
 105                  $categories_list
 106              );
 107          }
 108  
 109          $tags_list = get_the_tag_list( '', _x( ', ', 'Used between list items, there is a space after the comma.', 'twentysixteen' ) );
 110          if ( $tags_list && ! is_wp_error( $tags_list ) ) {
 111              printf(
 112                  '<span class="tags-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
 113                  _x( 'Tags', 'Used before tag names.', 'twentysixteen' ),
 114                  $tags_list
 115              );
 116          }
 117      }
 118  endif;
 119  
 120  if ( ! function_exists( 'twentysixteen_post_thumbnail' ) ) :
 121      /**
 122       * Displays an optional post thumbnail.
 123       *
 124       * Wraps the post thumbnail in an anchor element on index views, or a div
 125       * element when on single views.
 126       *
 127       * Create your own twentysixteen_post_thumbnail() function to override in a child theme.
 128       *
 129       * @since Twenty Sixteen 1.0
 130       */
 131  	function twentysixteen_post_thumbnail() {
 132          if ( post_password_required() || is_attachment() || ! has_post_thumbnail() ) {
 133              return;
 134          }
 135  
 136          if ( is_singular() ) :
 137              ?>
 138  
 139          <div class="post-thumbnail">
 140              <?php the_post_thumbnail(); ?>
 141      </div><!-- .post-thumbnail -->
 142  
 143      <?php else : ?>
 144  
 145      <a class="post-thumbnail" href="<?php the_permalink(); ?>" aria-hidden="true">
 146          <?php the_post_thumbnail( 'post-thumbnail', array( 'alt' => the_title_attribute( 'echo=0' ) ) ); ?>
 147      </a>
 148  
 149          <?php
 150      endif; // End is_singular().
 151      }
 152  endif;
 153  
 154  if ( ! function_exists( 'twentysixteen_excerpt' ) ) :
 155      /**
 156       * Displays the optional excerpt.
 157       *
 158       * Wraps the excerpt in a div element.
 159       *
 160       * Create your own twentysixteen_excerpt() function to override in a child theme.
 161       *
 162       * @since Twenty Sixteen 1.0
 163       *
 164       * @param string $css_class Optional. Class string of the div element. Defaults to 'entry-summary'.
 165       */
 166  	function twentysixteen_excerpt( $css_class = 'entry-summary' ) {
 167          $css_class = esc_attr( $css_class );
 168  
 169          if ( has_excerpt() || is_search() ) :
 170              ?>
 171              <div class="<?php echo $css_class; ?>">
 172                  <?php the_excerpt(); ?>
 173              </div><!-- .<?php echo $css_class; ?> -->
 174              <?php
 175          endif;
 176      }
 177  endif;
 178  
 179  if ( ! function_exists( 'twentysixteen_excerpt_more' ) && ! is_admin() ) :
 180      /**
 181       * Replaces "[...]" (appended to automatically generated excerpts) with ... and
 182       * a 'Continue reading' link.
 183       *
 184       * Create your own twentysixteen_excerpt_more() function to override in a child theme.
 185       *
 186       * @since Twenty Sixteen 1.0
 187       *
 188       * @return string 'Continue reading' link prepended with an ellipsis.
 189       */
 190  	function twentysixteen_excerpt_more() {
 191          $link = sprintf(
 192              '<a href="%1$s" class="more-link">%2$s</a>',
 193              esc_url( get_permalink( get_the_ID() ) ),
 194              /* translators: %s: Post title. Only visible to screen readers. */
 195              sprintf( __( 'Continue reading<span class="screen-reader-text"> "%s"</span>', 'twentysixteen' ), get_the_title( get_the_ID() ) )
 196          );
 197          return ' &hellip; ' . $link;
 198      }
 199      add_filter( 'excerpt_more', 'twentysixteen_excerpt_more' );
 200  endif;
 201  
 202  if ( ! function_exists( 'twentysixteen_categorized_blog' ) ) :
 203      /**
 204       * Determines whether blog/site has more than one category.
 205       *
 206       * Create your own twentysixteen_categorized_blog() function to override in a child theme.
 207       *
 208       * @since Twenty Sixteen 1.0
 209       *
 210       * @return bool True if there is more than one category, false otherwise.
 211       */
 212  	function twentysixteen_categorized_blog() {
 213          $all_the_cool_cats = get_transient( 'twentysixteen_categories' );
 214          if ( false === $all_the_cool_cats ) {
 215              // Create an array of all the categories that are attached to posts.
 216              $all_the_cool_cats = get_categories(
 217                  array(
 218                      'fields' => 'ids',
 219                      // We only need to know if there is more than one category.
 220                      'number' => 2,
 221                  )
 222              );
 223  
 224              // Count the number of categories that are attached to the posts.
 225              $all_the_cool_cats = count( $all_the_cool_cats );
 226  
 227              set_transient( 'twentysixteen_categories', $all_the_cool_cats );
 228          }
 229  
 230          if ( $all_the_cool_cats > 1 || is_preview() ) {
 231              // This blog has more than 1 category so twentysixteen_categorized_blog() should return true.
 232              return true;
 233          } else {
 234              // This blog has only 1 category so twentysixteen_categorized_blog() should return false.
 235              return false;
 236          }
 237      }
 238  endif;
 239  
 240  /**
 241   * Flushes out the transients used in twentysixteen_categorized_blog().
 242   *
 243   * @since Twenty Sixteen 1.0
 244   */
 245  function twentysixteen_category_transient_flusher() {
 246      if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
 247          return;
 248      }
 249      // Like, beat it. Dig?
 250      delete_transient( 'twentysixteen_categories' );
 251  }
 252  add_action( 'edit_category', 'twentysixteen_category_transient_flusher' );
 253  add_action( 'save_post', 'twentysixteen_category_transient_flusher' );
 254  
 255  if ( ! function_exists( 'twentysixteen_the_custom_logo' ) ) :
 256      /**
 257       * Displays the optional custom logo.
 258       *
 259       * Does nothing if the custom logo is not available.
 260       *
 261       * @since Twenty Sixteen 1.2
 262       */
 263  	function twentysixteen_the_custom_logo() {
 264          if ( function_exists( 'the_custom_logo' ) ) {
 265              the_custom_logo();
 266          }
 267      }
 268  endif;
 269  
 270  if ( ! function_exists( 'wp_body_open' ) ) :
 271      /**
 272       * Fire the wp_body_open action.
 273       *
 274       * Added for backward compatibility to support pre-5.2.0 WordPress versions.
 275       *
 276       * @since Twenty Sixteen 2.0
 277       */
 278  	function wp_body_open() {
 279          /**
 280           * Triggered after the opening <body> tag.
 281           *
 282           * @since Twenty Sixteen 2.0
 283           */
 284          do_action( 'wp_body_open' );
 285      }
 286  endif;