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/wp-content/themes/twentytwelve/ -> functions.php (source)

   1  <?php
   2  /**
   3   * Twenty Twelve functions and definitions
   4   *
   5   * Sets up the theme and provides some helper functions, which are used
   6   * in the theme as custom template tags. Others are attached to action and
   7   * filter hooks in WordPress to change core functionality.
   8   *
   9   * When using a child theme you can override certain functions (those wrapped
  10   * in a function_exists() call) by defining them first in your child theme's
  11   * functions.php file. The child theme's functions.php file is included before
  12   * the parent theme's file, so the child theme functions would be used.
  13   *
  14   * @link https://developer.wordpress.org/themes/basics/theme-functions/
  15   * @link https://developer.wordpress.org/themes/advanced-topics/child-themes/
  16   *
  17   * Functions that are not pluggable (not wrapped in function_exists()) are instead attached
  18   * to a filter or action hook.
  19   *
  20   * For more information on hooks, actions, and filters, @link https://developer.wordpress.org/plugins/
  21   *
  22   * @package WordPress
  23   * @subpackage Twenty_Twelve
  24   * @since Twenty Twelve 1.0
  25   */
  26  
  27  // Set up the content width value based on the theme's design and stylesheet.
  28  if ( ! isset( $content_width ) ) {
  29      $content_width = 625;
  30  }
  31  
  32  /**
  33   * Twenty Twelve setup.
  34   *
  35   * Sets up theme defaults and registers the various WordPress features that
  36   * Twenty Twelve supports.
  37   *
  38   * @uses load_theme_textdomain() For translation/localization support.
  39   * @uses add_editor_style() To add a Visual Editor stylesheet.
  40   * @uses add_theme_support() To add support for post thumbnails, automatic feed links,
  41   *  custom background, and post formats.
  42   * @uses register_nav_menu() To add support for navigation menus.
  43   * @uses set_post_thumbnail_size() To set a custom post thumbnail size.
  44   *
  45   * @since Twenty Twelve 1.0
  46   */
  47  function twentytwelve_setup() {
  48      /*
  49       * Makes Twenty Twelve available for translation.
  50       *
  51       * Translations can be filed at WordPress.org. See: https://translate.wordpress.org/projects/wp-themes/twentytwelve
  52       * If you're building a theme based on Twenty Twelve, use a find and replace
  53       * to change 'twentytwelve' to the name of your theme in all the template files.
  54       *
  55       * Manual loading of text domain is not required after the introduction of
  56       * just in time translation loading in WordPress version 4.6.
  57       *
  58       * @ticket 58318
  59       */
  60      if ( version_compare( $GLOBALS['wp_version'], '4.6', '<' ) ) {
  61          load_theme_textdomain( 'twentytwelve' );
  62      }
  63  
  64      // This theme styles the visual editor with editor-style.css to match the theme style.
  65      add_editor_style();
  66  
  67      // Load regular editor styles into the new block-based editor.
  68      add_theme_support( 'editor-styles' );
  69  
  70      // Load default block styles.
  71      add_theme_support( 'wp-block-styles' );
  72  
  73      // Add support for responsive embeds.
  74      add_theme_support( 'responsive-embeds' );
  75  
  76      // Add support for custom color scheme.
  77      add_theme_support(
  78          'editor-color-palette',
  79          array(
  80              array(
  81                  'name'  => __( 'Blue', 'twentytwelve' ),
  82                  'slug'  => 'blue',
  83                  'color' => '#21759b',
  84              ),
  85              array(
  86                  'name'  => __( 'Dark Gray', 'twentytwelve' ),
  87                  'slug'  => 'dark-gray',
  88                  'color' => '#444',
  89              ),
  90              array(
  91                  'name'  => __( 'Medium Gray', 'twentytwelve' ),
  92                  'slug'  => 'medium-gray',
  93                  'color' => '#9f9f9f',
  94              ),
  95              array(
  96                  'name'  => __( 'Light Gray', 'twentytwelve' ),
  97                  'slug'  => 'light-gray',
  98                  'color' => '#e6e6e6',
  99              ),
 100              array(
 101                  'name'  => __( 'White', 'twentytwelve' ),
 102                  'slug'  => 'white',
 103                  'color' => '#fff',
 104              ),
 105          )
 106      );
 107  
 108      // Adds RSS feed links to <head> for posts and comments.
 109      add_theme_support( 'automatic-feed-links' );
 110  
 111      // This theme supports a variety of post formats.
 112      add_theme_support( 'post-formats', array( 'aside', 'image', 'link', 'quote', 'status' ) );
 113  
 114      // This theme uses wp_nav_menu() in one location.
 115      register_nav_menu( 'primary', __( 'Primary Menu', 'twentytwelve' ) );
 116  
 117      /*
 118       * This theme supports custom background color and image,
 119       * and here we also set up the default background color.
 120       */
 121      add_theme_support(
 122          'custom-background',
 123          array(
 124              'default-color' => 'e6e6e6',
 125          )
 126      );
 127  
 128      // This theme uses a custom image size for featured images, displayed on "standard" posts.
 129      add_theme_support( 'post-thumbnails' );
 130      set_post_thumbnail_size( 624, 9999 ); // Unlimited height, soft crop.
 131  
 132      // Indicate widget sidebars can use selective refresh in the Customizer.
 133      add_theme_support( 'customize-selective-refresh-widgets' );
 134  }
 135  add_action( 'after_setup_theme', 'twentytwelve_setup' );
 136  
 137  /**
 138   * Add support for a custom header image.
 139   */
 140  require get_template_directory() . '/inc/custom-header.php';
 141  
 142  /**
 143   * Add block patterns.
 144   */
 145  require get_template_directory() . '/inc/block-patterns.php';
 146  
 147  if ( ! function_exists( 'twentytwelve_get_font_url' ) ) :
 148      /**
 149       * Return the font stylesheet URL if available.
 150       *
 151       * The use of Open Sans by default is localized. For languages that use
 152       * characters not supported by the font, the font can be disabled.
 153       *
 154       * @since Twenty Twelve 1.2
 155       * @since Twenty Twelve 3.9 Replaced Google URL with self-hosted font.
 156       *
 157       * @return string Font stylesheet or empty string if disabled.
 158       */
 159  	function twentytwelve_get_font_url() {
 160          $font_url = '';
 161  
 162          /*
 163          * translators: If there are characters in your language that are not supported
 164          * by Open Sans, translate this to 'off'. Do not translate into your own language.
 165          */
 166          if ( 'off' !== _x( 'on', 'Open Sans font: on or off', 'twentytwelve' ) ) {
 167              $font_url = get_template_directory_uri() . '/fonts/font-open-sans.css';
 168          }
 169  
 170          return $font_url;
 171      }
 172  endif;
 173  
 174  /**
 175   * Enqueue scripts and styles for front end.
 176   *
 177   * @since Twenty Twelve 1.0
 178   */
 179  function twentytwelve_scripts_styles() {
 180      global $wp_styles;
 181  
 182      /*
 183       * Adds JavaScript to pages with the comment form to support
 184       * sites with threaded comments (when in use).
 185       */
 186      if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
 187          wp_enqueue_script( 'comment-reply' );
 188      }
 189  
 190      // Adds JavaScript for handling the navigation menu hide-and-show behavior.
 191      wp_enqueue_script(
 192          'twentytwelve-navigation',
 193          get_template_directory_uri() . '/js/navigation.js',
 194          array( 'jquery' ),
 195          '20141205',
 196          array(
 197              'in_footer' => false, // Because involves header.
 198              'strategy'  => 'defer',
 199          )
 200      );
 201  
 202      $font_url = twentytwelve_get_font_url();
 203      if ( ! empty( $font_url ) ) {
 204          $font_version = ( 0 === strpos( (string) twentytwelve_get_font_url(), get_template_directory_uri() . '/' ) ) ? '20230328' : null;
 205          wp_enqueue_style( 'twentytwelve-fonts', esc_url_raw( $font_url ), array(), $font_version );
 206      }
 207  
 208      // Loads our main stylesheet.
 209      wp_enqueue_style( 'twentytwelve-style', get_stylesheet_uri(), array(), '20231107' );
 210  
 211      // Theme block stylesheet.
 212      wp_enqueue_style( 'twentytwelve-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentytwelve-style' ), '20230213' );
 213  
 214      // Loads the Internet Explorer specific stylesheet.
 215      wp_enqueue_style( 'twentytwelve-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentytwelve-style' ), '20150214' );
 216      $wp_styles->add_data( 'twentytwelve-ie', 'conditional', 'lt IE 9' );
 217  }
 218  add_action( 'wp_enqueue_scripts', 'twentytwelve_scripts_styles' );
 219  
 220  /**
 221   * Enqueue styles for the block-based editor.
 222   *
 223   * @since Twenty Twelve 2.6
 224   */
 225  function twentytwelve_block_editor_styles() {
 226      // Block styles.
 227      wp_enqueue_style( 'twentytwelve-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), '20230213' );
 228      // Add custom fonts.
 229      $font_version = ( 0 === strpos( (string) twentytwelve_get_font_url(), get_template_directory_uri() . '/' ) ) ? '20230328' : null;
 230      wp_enqueue_style( 'twentytwelve-fonts', twentytwelve_get_font_url(), array(), $font_version );
 231  }
 232  add_action( 'enqueue_block_editor_assets', 'twentytwelve_block_editor_styles' );
 233  
 234  /**
 235   * Add preconnect for Google Fonts.
 236   *
 237   * @since Twenty Twelve 2.2
 238   * @deprecated Twenty Twelve 3.9 Disabled filter because, by default, fonts are self-hosted.
 239   *
 240   * @param array   $urls          URLs to print for resource hints.
 241   * @param string  $relation_type The relation type the URLs are printed.
 242   * @return array URLs to print for resource hints.
 243   */
 244  function twentytwelve_resource_hints( $urls, $relation_type ) {
 245      if ( wp_style_is( 'twentytwelve-fonts', 'queue' ) && 'preconnect' === $relation_type ) {
 246          if ( version_compare( $GLOBALS['wp_version'], '4.7-alpha', '>=' ) ) {
 247              $urls[] = array(
 248                  'href' => 'https://fonts.gstatic.com',
 249                  'crossorigin',
 250              );
 251          } else {
 252              $urls[] = 'https://fonts.gstatic.com';
 253          }
 254      }
 255  
 256      return $urls;
 257  }
 258  // add_filter( 'wp_resource_hints', 'twentytwelve_resource_hints', 10, 2 );
 259  
 260  /**
 261   * Filter TinyMCE CSS path to include hosted fonts.
 262   *
 263   * Adds additional stylesheets to the TinyMCE editor if needed.
 264   *
 265   * @uses twentytwelve_get_font_url() To get the font stylesheet URL.
 266   *
 267   * @since Twenty Twelve 1.2
 268   *
 269   * @param string $mce_css CSS path to load in TinyMCE.
 270   * @return string Filtered CSS path.
 271   */
 272  function twentytwelve_mce_css( $mce_css ) {
 273      $font_url = twentytwelve_get_font_url();
 274  
 275      if ( empty( $font_url ) ) {
 276          return $mce_css;
 277      }
 278  
 279      if ( ! empty( $mce_css ) ) {
 280          $mce_css .= ',';
 281      }
 282  
 283      $mce_css .= esc_url_raw( str_replace( ',', '%2C', $font_url ) );
 284  
 285      return $mce_css;
 286  }
 287  add_filter( 'mce_css', 'twentytwelve_mce_css' );
 288  
 289  /**
 290   * Filter the page title.
 291   *
 292   * Creates a nicely formatted and more specific title element text
 293   * for output in head of document, based on current view.
 294   *
 295   * @since Twenty Twelve 1.0
 296   *
 297   * @param string $title Default title text for current view.
 298   * @param string $sep Optional separator.
 299   * @return string Filtered title.
 300   */
 301  function twentytwelve_wp_title( $title, $sep ) {
 302      global $paged, $page;
 303  
 304      if ( is_feed() ) {
 305          return $title;
 306      }
 307  
 308      // Add the site name.
 309      $title .= get_bloginfo( 'name', 'display' );
 310  
 311      // Add the site description for the home/front page.
 312      $site_description = get_bloginfo( 'description', 'display' );
 313      if ( $site_description && ( is_home() || is_front_page() ) ) {
 314          $title = "$title $sep $site_description";
 315      }
 316  
 317      // Add a page number if necessary.
 318      if ( ( $paged >= 2 || $page >= 2 ) && ! is_404() ) {
 319          /* translators: %s: Page number. */
 320          $title = "$title $sep " . sprintf( __( 'Page %s', 'twentytwelve' ), max( $paged, $page ) );
 321      }
 322  
 323      return $title;
 324  }
 325  add_filter( 'wp_title', 'twentytwelve_wp_title', 10, 2 );
 326  
 327  /**
 328   * Filter the page menu arguments.
 329   *
 330   * Makes our wp_nav_menu() fallback -- wp_page_menu() -- show a home link.
 331   *
 332   * @since Twenty Twelve 1.0
 333   */
 334  function twentytwelve_page_menu_args( $args ) {
 335      if ( ! isset( $args['show_home'] ) ) {
 336          $args['show_home'] = true;
 337      }
 338      return $args;
 339  }
 340  add_filter( 'wp_page_menu_args', 'twentytwelve_page_menu_args' );
 341  
 342  /**
 343   * Register sidebars.
 344   *
 345   * Registers our main widget area and the front page widget areas.
 346   *
 347   * @since Twenty Twelve 1.0
 348   */
 349  function twentytwelve_widgets_init() {
 350      register_sidebar(
 351          array(
 352              'name'          => __( 'Main Sidebar', 'twentytwelve' ),
 353              'id'            => 'sidebar-1',
 354              'description'   => __( 'Appears on posts and pages except the optional Front Page template, which has its own widgets', 'twentytwelve' ),
 355              'before_widget' => '<aside id="%1$s" class="widget %2$s">',
 356              'after_widget'  => '</aside>',
 357              'before_title'  => '<h3 class="widget-title">',
 358              'after_title'   => '</h3>',
 359          )
 360      );
 361  
 362      register_sidebar(
 363          array(
 364              'name'          => __( 'First Front Page Widget Area', 'twentytwelve' ),
 365              'id'            => 'sidebar-2',
 366              'description'   => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
 367              'before_widget' => '<aside id="%1$s" class="widget %2$s">',
 368              'after_widget'  => '</aside>',
 369              'before_title'  => '<h3 class="widget-title">',
 370              'after_title'   => '</h3>',
 371          )
 372      );
 373  
 374      register_sidebar(
 375          array(
 376              'name'          => __( 'Second Front Page Widget Area', 'twentytwelve' ),
 377              'id'            => 'sidebar-3',
 378              'description'   => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
 379              'before_widget' => '<aside id="%1$s" class="widget %2$s">',
 380              'after_widget'  => '</aside>',
 381              'before_title'  => '<h3 class="widget-title">',
 382              'after_title'   => '</h3>',
 383          )
 384      );
 385  }
 386  add_action( 'widgets_init', 'twentytwelve_widgets_init' );
 387  
 388  if ( ! function_exists( 'wp_get_list_item_separator' ) ) :
 389      /**
 390       * Retrieves the list item separator based on the locale.
 391       *
 392       * Added for backward compatibility to support pre-6.0.0 WordPress versions.
 393       *
 394       * @since 6.0.0
 395       */
 396  	function wp_get_list_item_separator() {
 397          /* translators: Used between list items, there is a space after the comma. */
 398          return __( ', ', 'twentytwelve' );
 399      }
 400  endif;
 401  
 402  if ( ! function_exists( 'twentytwelve_content_nav' ) ) :
 403      /**
 404       * Displays navigation to next/previous pages when applicable.
 405       *
 406       * @since Twenty Twelve 1.0
 407       */
 408  	function twentytwelve_content_nav( $html_id ) {
 409          global $wp_query;
 410  
 411          if ( $wp_query->max_num_pages > 1 ) : ?>
 412              <nav id="<?php echo esc_attr( $html_id ); ?>" class="navigation">
 413                  <h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>
 414                  <div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">&larr;</span> Older posts', 'twentytwelve' ) ); ?></div>
 415                  <div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">&rarr;</span>', 'twentytwelve' ) ); ?></div>
 416              </nav><!-- .navigation -->
 417              <?php
 418      endif;
 419      }
 420  endif;
 421  
 422  if ( ! function_exists( 'twentytwelve_comment' ) ) :
 423      /**
 424       * Template for comments and pingbacks.
 425       *
 426       * To override this walker in a child theme without modifying the comments template
 427       * simply create your own twentytwelve_comment(), and that function will be used instead.
 428       *
 429       * Used as a callback by wp_list_comments() for displaying the comments.
 430       *
 431       * @since Twenty Twelve 1.0
 432       *
 433       * @global WP_Post $post Global post object.
 434       */
 435  	function twentytwelve_comment( $comment, $args, $depth ) {
 436          $GLOBALS['comment'] = $comment;
 437          switch ( $comment->comment_type ) :
 438              case 'pingback':
 439              case 'trackback':
 440                  // Display trackbacks differently than normal comments.
 441                  ?>
 442          <li <?php comment_class(); ?> id="comment-<?php comment_ID(); ?>">
 443          <p><?php _e( 'Pingback:', 'twentytwelve' ); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __( '(Edit)', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?></p>
 444                  <?php
 445                  break;
 446              default:
 447                  // Proceed with normal comments.
 448                  global $post;
 449                  ?>
 450          <li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
 451          <article id="comment-<?php comment_ID(); ?>" class="comment">
 452              <header class="comment-meta comment-author vcard">
 453                  <?php
 454                      echo get_avatar( $comment, 44 );
 455                      printf(
 456                          '<cite><b class="fn">%1$s</b> %2$s</cite>',
 457                          get_comment_author_link(),
 458                          // If current post author is also comment author, make it known visually.
 459                          ( $comment->user_id === $post->post_author ) ? '<span>' . __( 'Post author', 'twentytwelve' ) . '</span>' : ''
 460                      );
 461                      printf(
 462                          '<a href="%1$s"><time datetime="%2$s">%3$s</time></a>',
 463                          esc_url( get_comment_link( $comment->comment_ID ) ),
 464                          get_comment_time( 'c' ),
 465                          /* translators: 1: Date, 2: Time. */
 466                          sprintf( __( '%1$s at %2$s', 'twentytwelve' ), get_comment_date(), get_comment_time() )
 467                      );
 468                  ?>
 469                  </header><!-- .comment-meta -->
 470  
 471                  <?php
 472                  $commenter = wp_get_current_commenter();
 473                  if ( $commenter['comment_author_email'] ) {
 474                      $moderation_note = __( 'Your comment is awaiting moderation.', 'twentytwelve' );
 475                  } else {
 476                      $moderation_note = __( 'Your comment is awaiting moderation. This is a preview; your comment will be visible after it has been approved.', 'twentytwelve' );
 477                  }
 478                  ?>
 479  
 480                  <?php if ( '0' === $comment->comment_approved ) : ?>
 481                  <p class="comment-awaiting-moderation"><?php echo $moderation_note; ?></p>
 482                  <?php endif; ?>
 483  
 484                  <section class="comment-content comment">
 485                  <?php comment_text(); ?>
 486                  <?php edit_comment_link( __( 'Edit', 'twentytwelve' ), '<p class="edit-link">', '</p>' ); ?>
 487                  </section><!-- .comment-content -->
 488  
 489                  <div class="reply">
 490                  <?php
 491                  comment_reply_link(
 492                      array_merge(
 493                          $args,
 494                          array(
 495                              'reply_text' => __( 'Reply', 'twentytwelve' ),
 496                              'after'      => ' <span>&darr;</span>',
 497                              'depth'      => $depth,
 498                              'max_depth'  => $args['max_depth'],
 499                          )
 500                      )
 501                  );
 502                  ?>
 503                  </div><!-- .reply -->
 504              </article><!-- #comment-## -->
 505                  <?php
 506                  break;
 507          endswitch; // End comment_type check.
 508      }
 509  endif;
 510  
 511  if ( ! function_exists( 'twentytwelve_entry_meta' ) ) :
 512      /**
 513       * Set up post entry meta.
 514       *
 515       * Prints HTML with meta information for current post: categories, tags, permalink, author, and date.
 516       *
 517       * Create your own twentytwelve_entry_meta() to override in a child theme.
 518       *
 519       * @since Twenty Twelve 1.0
 520       */
 521  	function twentytwelve_entry_meta() {
 522          $categories_list = get_the_category_list( wp_get_list_item_separator() );
 523  
 524          $tags_list = get_the_tag_list( '', wp_get_list_item_separator() );
 525  
 526          $date = sprintf(
 527              '<a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s">%4$s</time></a>',
 528              esc_url( get_permalink() ),
 529              esc_attr( get_the_time() ),
 530              esc_attr( get_the_date( 'c' ) ),
 531              esc_html( get_the_date() )
 532          );
 533  
 534          $author = sprintf(
 535              '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s" rel="author">%3$s</a></span>',
 536              esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
 537              /* translators: %s: Author display name. */
 538              esc_attr( sprintf( __( 'View all posts by %s', 'twentytwelve' ), get_the_author() ) ),
 539              get_the_author()
 540          );
 541  
 542          if ( $tags_list && ! is_wp_error( $tags_list ) ) {
 543              /* translators: 1: Category name, 2: Tag name, 3: Date, 4: Author display name. */
 544              $utility_text = __( 'This entry was posted in %1$s and tagged %2$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
 545          } elseif ( $categories_list ) {
 546              /* translators: 1: Category name, 3: Date, 4: Author display name. */
 547              $utility_text = __( 'This entry was posted in %1$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
 548          } else {
 549              /* translators: 3: Date, 4: Author display name. */
 550              $utility_text = __( 'This entry was posted on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
 551          }
 552  
 553          printf(
 554              $utility_text,
 555              $categories_list,
 556              $tags_list,
 557              $date,
 558              $author
 559          );
 560      }
 561  endif;
 562  
 563  /**
 564   * Extend the default WordPress body classes.
 565   *
 566   * Extends the default WordPress body class to denote:
 567   * 1. Using a full-width layout, when no active widgets in the sidebar
 568   *    or full-width template.
 569   * 2. Front Page template: thumbnail in use and number of sidebars for
 570   *    widget areas.
 571   * 3. White or empty background color to change the layout and spacing.
 572   * 4. Custom fonts enabled.
 573   * 5. Single or multiple authors.
 574   *
 575   * @since Twenty Twelve 1.0
 576   *
 577   * @param array $classes Existing class values.
 578   * @return array Filtered class values.
 579   */
 580  function twentytwelve_body_class( $classes ) {
 581      $background_color = get_background_color();
 582      $background_image = get_background_image();
 583  
 584      if ( ! is_active_sidebar( 'sidebar-1' ) || is_page_template( 'page-templates/full-width.php' ) ) {
 585          $classes[] = 'full-width';
 586      }
 587  
 588      if ( is_page_template( 'page-templates/front-page.php' ) ) {
 589          $classes[] = 'template-front-page';
 590          if ( has_post_thumbnail() ) {
 591              $classes[] = 'has-post-thumbnail';
 592          }
 593          if ( is_active_sidebar( 'sidebar-2' ) && is_active_sidebar( 'sidebar-3' ) ) {
 594              $classes[] = 'two-sidebars';
 595          }
 596      }
 597  
 598      if ( empty( $background_image ) ) {
 599          if ( empty( $background_color ) ) {
 600              $classes[] = 'custom-background-empty';
 601          } elseif ( in_array( $background_color, array( 'fff', 'ffffff' ), true ) ) {
 602              $classes[] = 'custom-background-white';
 603          }
 604      }
 605  
 606      // Enable custom font class only if the font CSS is queued to load.
 607      if ( wp_style_is( 'twentytwelve-fonts', 'queue' ) ) {
 608          $classes[] = 'custom-font-enabled';
 609      }
 610  
 611      if ( ! is_multi_author() ) {
 612          $classes[] = 'single-author';
 613      }
 614  
 615      return $classes;
 616  }
 617  add_filter( 'body_class', 'twentytwelve_body_class' );
 618  
 619  /**
 620   * Adjust content width in certain contexts.
 621   *
 622   * Adjusts content_width value for full-width and single image attachment
 623   * templates, and when there are no active widgets in the sidebar.
 624   *
 625   * @since Twenty Twelve 1.0
 626   */
 627  function twentytwelve_content_width() {
 628      if ( is_page_template( 'page-templates/full-width.php' ) || is_attachment() || ! is_active_sidebar( 'sidebar-1' ) ) {
 629          global $content_width;
 630          $content_width = 960;
 631      }
 632  }
 633  add_action( 'template_redirect', 'twentytwelve_content_width' );
 634  
 635  /**
 636   * Register postMessage support.
 637   *
 638   * Add postMessage support for site title and description for the Customizer.
 639   *
 640   * @since Twenty Twelve 1.0
 641   *
 642   * @param WP_Customize_Manager $wp_customize Customizer object.
 643   */
 644  function twentytwelve_customize_register( $wp_customize ) {
 645      $wp_customize->get_setting( 'blogname' )->transport         = 'postMessage';
 646      $wp_customize->get_setting( 'blogdescription' )->transport  = 'postMessage';
 647      $wp_customize->get_setting( 'header_textcolor' )->transport = 'postMessage';
 648  
 649      if ( isset( $wp_customize->selective_refresh ) ) {
 650          $wp_customize->selective_refresh->add_partial(
 651              'blogname',
 652              array(
 653                  'selector'            => '.site-title > a',
 654                  'container_inclusive' => false,
 655                  'render_callback'     => 'twentytwelve_customize_partial_blogname',
 656              )
 657          );
 658          $wp_customize->selective_refresh->add_partial(
 659              'blogdescription',
 660              array(
 661                  'selector'            => '.site-description',
 662                  'container_inclusive' => false,
 663                  'render_callback'     => 'twentytwelve_customize_partial_blogdescription',
 664              )
 665          );
 666      }
 667  }
 668  add_action( 'customize_register', 'twentytwelve_customize_register' );
 669  
 670  /**
 671   * Render the site title for the selective refresh partial.
 672   *
 673   * @since Twenty Twelve 2.0
 674   *
 675   * @see twentytwelve_customize_register()
 676   *
 677   * @return void
 678   */
 679  function twentytwelve_customize_partial_blogname() {
 680      bloginfo( 'name' );
 681  }
 682  
 683  /**
 684   * Render the site tagline for the selective refresh partial.
 685   *
 686   * @since Twenty Twelve 2.0
 687   *
 688   * @see twentytwelve_customize_register()
 689   *
 690   * @return void
 691   */
 692  function twentytwelve_customize_partial_blogdescription() {
 693      bloginfo( 'description' );
 694  }
 695  
 696  /**
 697   * Enqueue JavaScript postMessage handlers for the Customizer.
 698   *
 699   * Binds JS handlers to make the Customizer preview reload changes asynchronously.
 700   *
 701   * @since Twenty Twelve 1.0
 702   */
 703  function twentytwelve_customize_preview_js() {
 704      wp_enqueue_script( 'twentytwelve-customizer', get_template_directory_uri() . '/js/theme-customizer.js', array( 'customize-preview' ), '20200516', array( 'in_footer' => true ) );
 705  }
 706  add_action( 'customize_preview_init', 'twentytwelve_customize_preview_js' );
 707  
 708  /**
 709   * Modifies tag cloud widget arguments to display all tags in the same font size
 710   * and use list format for better accessibility.
 711   *
 712   * @since Twenty Twelve 2.4
 713   *
 714   * @param array $args Arguments for tag cloud widget.
 715   * @return array The filtered arguments for tag cloud widget.
 716   */
 717  function twentytwelve_widget_tag_cloud_args( $args ) {
 718      $args['largest']  = 22;
 719      $args['smallest'] = 8;
 720      $args['unit']     = 'pt';
 721      $args['format']   = 'list';
 722  
 723      return $args;
 724  }
 725  add_filter( 'widget_tag_cloud_args', 'twentytwelve_widget_tag_cloud_args' );
 726  
 727  if ( ! function_exists( 'wp_body_open' ) ) :
 728      /**
 729       * Fire the wp_body_open action.
 730       *
 731       * Added for backward compatibility to support pre-5.2.0 WordPress versions.
 732       *
 733       * @since Twenty Twelve 3.0
 734       */
 735  	function wp_body_open() {
 736          /**
 737           * Triggered after the opening <body> tag.
 738           *
 739           * @since Twenty Twelve 3.0
 740           */
 741          do_action( 'wp_body_open' );
 742      }
 743  endif;


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