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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              /**
  23               * Filters the Twenty Sixteen entry meta avatar size.
  24               *
  25               * @since Twenty Sixteen 1.0
  26               *
  27               * @param int $size The avatar height and width size in pixels.
  28               */
  29              $author_avatar_size = apply_filters( 'twentysixteen_author_avatar_size', 49 );
  30              printf(
  31                  '<span class="byline">%1$s<span class="screen-reader-text">%2$s </span><span class="author vcard"><a class="url fn n" href="%3$s">%4$s</a></span></span>',
  32                  get_avatar( get_the_author_meta( 'user_email' ), $author_avatar_size ),
  33                  /* translators: Hidden accessibility text. */
  34                  _x( 'Author', 'Used before post author name.', 'twentysixteen' ),
  35                  esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
  36                  get_the_author()
  37              );
  38          }
  39  
  40          if ( in_array( get_post_type(), array( 'post', 'attachment' ), true ) ) {
  41              twentysixteen_entry_date();
  42          }
  43  
  44          $format = get_post_format();
  45          if ( current_theme_supports( 'post-formats', $format ) ) {
  46              printf(
  47                  '<span class="entry-format">%1$s<a href="%2$s">%3$s</a></span>',
  48                  sprintf(
  49                      '<span class="screen-reader-text">%s </span>',
  50                      /* translators: Hidden accessibility text. */
  51                      _x( 'Format', 'Used before post format.', 'twentysixteen' )
  52                  ),
  53                  esc_url( get_post_format_link( $format ) ),
  54                  get_post_format_string( $format )
  55              );
  56          }
  57  
  58          if ( 'post' === get_post_type() ) {
  59              twentysixteen_entry_taxonomies();
  60          }
  61  
  62          if ( ! is_singular() && ! post_password_required() && ( comments_open() || get_comments_number() ) ) {
  63              echo '<span class="comments-link">';
  64              /* translators: %s: Post title. Only visible to screen readers. */
  65              comments_popup_link( sprintf( __( 'Leave a comment<span class="screen-reader-text"> on %s</span>', 'twentysixteen' ), get_the_title() ) );
  66              echo '</span>';
  67          }
  68      }
  69  endif;
  70  
  71  if ( ! function_exists( 'twentysixteen_entry_date' ) ) :
  72      /**
  73       * Prints HTML with date information for current post.
  74       *
  75       * Create your own twentysixteen_entry_date() function to override in a child theme.
  76       *
  77       * @since Twenty Sixteen 1.0
  78       */
  79  	function twentysixteen_entry_date() {
  80          $time_string = '<time class="entry-date published updated" datetime="%1$s">%2$s</time>';
  81  
  82          if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) {
  83              $time_string = '<time class="entry-date published" datetime="%1$s">%2$s</time><time class="updated" datetime="%3$s">%4$s</time>';
  84          }
  85  
  86          $time_string = sprintf(
  87              $time_string,
  88              esc_attr( get_the_date( 'c' ) ),
  89              get_the_date(),
  90              esc_attr( get_the_modified_date( 'c' ) ),
  91              get_the_modified_date()
  92          );
  93  
  94          printf(
  95              '<span class="posted-on"><span class="screen-reader-text">%1$s </span><a href="%2$s" rel="bookmark">%3$s</a></span>',
  96              /* translators: Hidden accessibility text. */
  97              _x( 'Posted on', 'Used before publish date.', 'twentysixteen' ),
  98              esc_url( get_permalink() ),
  99              $time_string
 100          );
 101      }
 102  endif;
 103  
 104  if ( ! function_exists( 'twentysixteen_entry_taxonomies' ) ) :
 105      /**
 106       * Prints HTML with category and tags for current post.
 107       *
 108       * Create your own twentysixteen_entry_taxonomies() function to override in a child theme.
 109       *
 110       * @since Twenty Sixteen 1.0
 111       */
 112  	function twentysixteen_entry_taxonomies() {
 113          $categories_list = get_the_category_list( _x( ', ', 'Used between list items, there is a space after the comma.', 'twentysixteen' ) );
 114          if ( $categories_list && twentysixteen_categorized_blog() ) {
 115              printf(
 116                  '<span class="cat-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
 117                  /* translators: Hidden accessibility text. */
 118                  _x( 'Categories', 'Used before category names.', 'twentysixteen' ),
 119                  $categories_list
 120              );
 121          }
 122  
 123          $tags_list = get_the_tag_list( '', _x( ', ', 'Used between list items, there is a space after the comma.', 'twentysixteen' ) );
 124          if ( $tags_list && ! is_wp_error( $tags_list ) ) {
 125              printf(
 126                  '<span class="tags-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
 127                  /* translators: Hidden accessibility text. */
 128                  _x( 'Tags', 'Used before tag names.', 'twentysixteen' ),
 129                  $tags_list
 130              );
 131          }
 132      }
 133  endif;
 134  
 135  if ( ! function_exists( 'twentysixteen_post_thumbnail' ) ) :
 136      /**
 137       * Displays an optional post thumbnail.
 138       *
 139       * Wraps the post thumbnail in an anchor element on index views, or a div
 140       * element when on single views.
 141       *
 142       * Create your own twentysixteen_post_thumbnail() function to override in a child theme.
 143       *
 144       * @since Twenty Sixteen 1.0
 145       */
 146  	function twentysixteen_post_thumbnail() {
 147          if ( post_password_required() || is_attachment() || ! has_post_thumbnail() ) {
 148              return;
 149          }
 150  
 151          if ( is_singular() ) :
 152              ?>
 153  
 154          <div class="post-thumbnail">
 155              <?php the_post_thumbnail(); ?>
 156      </div><!-- .post-thumbnail -->
 157  
 158      <?php else : ?>
 159  
 160      <a class="post-thumbnail" href="<?php the_permalink(); ?>" aria-hidden="true">
 161          <?php the_post_thumbnail( 'post-thumbnail', array( 'alt' => the_title_attribute( 'echo=0' ) ) ); ?>
 162      </a>
 163  
 164          <?php
 165      endif; // End is_singular().
 166      }
 167  endif;
 168  
 169  if ( ! function_exists( 'twentysixteen_excerpt' ) ) :
 170      /**
 171       * Displays the optional excerpt.
 172       *
 173       * Wraps the excerpt in a div element.
 174       *
 175       * Create your own twentysixteen_excerpt() function to override in a child theme.
 176       *
 177       * @since Twenty Sixteen 1.0
 178       *
 179       * @param string $css_class Optional. Class string of the div element. Defaults to 'entry-summary'.
 180       */
 181  	function twentysixteen_excerpt( $css_class = 'entry-summary' ) {
 182          $css_class = esc_attr( $css_class );
 183  
 184          if ( has_excerpt() || is_search() ) :
 185              ?>
 186              <div class="<?php echo $css_class; ?>">
 187                  <?php the_excerpt(); ?>
 188              </div><!-- .<?php echo $css_class; ?> -->
 189              <?php
 190          endif;
 191      }
 192  endif;
 193  
 194  if ( ! function_exists( 'twentysixteen_excerpt_more' ) && ! is_admin() ) :
 195      /**
 196       * Replaces "[...]" (appended to automatically generated excerpts) with ... and
 197       * a 'Continue reading' link.
 198       *
 199       * Create your own twentysixteen_excerpt_more() function to override in a child theme.
 200       *
 201       * @since Twenty Sixteen 1.0
 202       *
 203       * @return string 'Continue reading' link prepended with an ellipsis.
 204       */
 205  	function twentysixteen_excerpt_more() {
 206          $link = sprintf(
 207              '<a href="%1$s" class="more-link">%2$s</a>',
 208              esc_url( get_permalink( get_the_ID() ) ),
 209              /* translators: %s: Post title. Only visible to screen readers. */
 210              sprintf( __( 'Continue reading<span class="screen-reader-text"> "%s"</span>', 'twentysixteen' ), get_the_title( get_the_ID() ) )
 211          );
 212          return ' &hellip; ' . $link;
 213      }
 214      add_filter( 'excerpt_more', 'twentysixteen_excerpt_more' );
 215  endif;
 216  
 217  if ( ! function_exists( 'twentysixteen_categorized_blog' ) ) :
 218      /**
 219       * Determines whether blog/site has more than one category.
 220       *
 221       * Create your own twentysixteen_categorized_blog() function to override in a child theme.
 222       *
 223       * @since Twenty Sixteen 1.0
 224       *
 225       * @return bool True if there is more than one category, false otherwise.
 226       */
 227  	function twentysixteen_categorized_blog() {
 228          $all_the_cool_cats = get_transient( 'twentysixteen_categories' );
 229          if ( false === $all_the_cool_cats ) {
 230              // Create an array of all the categories that are attached to posts.
 231              $all_the_cool_cats = get_categories(
 232                  array(
 233                      'fields' => 'ids',
 234                      // We only need to know if there is more than one category.
 235                      'number' => 2,
 236                  )
 237              );
 238  
 239              // Count the number of categories that are attached to the posts.
 240              $all_the_cool_cats = count( $all_the_cool_cats );
 241  
 242              set_transient( 'twentysixteen_categories', $all_the_cool_cats );
 243          }
 244  
 245          if ( $all_the_cool_cats > 1 || is_preview() ) {
 246              // This blog has more than 1 category so twentysixteen_categorized_blog() should return true.
 247              return true;
 248          } else {
 249              // This blog has only 1 category so twentysixteen_categorized_blog() should return false.
 250              return false;
 251          }
 252      }
 253  endif;
 254  
 255  /**
 256   * Flushes out the transients used in twentysixteen_categorized_blog().
 257   *
 258   * @since Twenty Sixteen 1.0
 259   */
 260  function twentysixteen_category_transient_flusher() {
 261      if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
 262          return;
 263      }
 264      // Like, beat it. Dig?
 265      delete_transient( 'twentysixteen_categories' );
 266  }
 267  add_action( 'edit_category', 'twentysixteen_category_transient_flusher' );
 268  add_action( 'save_post', 'twentysixteen_category_transient_flusher' );
 269  
 270  if ( ! function_exists( 'twentysixteen_the_custom_logo' ) ) :
 271      /**
 272       * Displays the optional custom logo.
 273       *
 274       * Does nothing if the custom logo is not available.
 275       *
 276       * @since Twenty Sixteen 1.2
 277       */
 278  	function twentysixteen_the_custom_logo() {
 279          if ( function_exists( 'the_custom_logo' ) ) {
 280              the_custom_logo();
 281          }
 282      }
 283  endif;
 284  
 285  if ( ! function_exists( 'wp_body_open' ) ) :
 286      /**
 287       * Fires the wp_body_open action.
 288       *
 289       * Added for backward compatibility to support pre-5.2.0 WordPress versions.
 290       *
 291       * @since Twenty Sixteen 2.0
 292       */
 293  	function wp_body_open() {
 294          /**
 295           * Triggered after the opening <body> tag.
 296           *
 297           * @since Twenty Sixteen 2.0
 298           */
 299          do_action( 'wp_body_open' );
 300      }
 301  endif;