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/wp-content/themes/twentytwenty/inc/ -> template-tags.php (source)

   1  <?php
   2  /**
   3   * Custom template tags for this theme.
   4   *
   5   * @package WordPress
   6   * @subpackage Twenty_Twenty
   7   * @since Twenty Twenty 1.0
   8   */
   9  
  10  /**
  11   * Table of Contents:
  12   * Logo & Description
  13   * Comments
  14   * Post Meta
  15   * Menus
  16   * Classes
  17   * Archives
  18   * Miscellaneous
  19   */
  20  
  21  /**
  22   * Logo & Description
  23   */
  24  
  25  /**
  26   * Displays the site logo, either text or image.
  27   *
  28   * @param array   $args Arguments for displaying the site logo either as an image or text.
  29   * @param bool    $echo Echo or return the HTML.
  30   * @return string Compiled HTML based on our arguments.
  31   */
  32  function twentytwenty_site_logo( $args = array(), $echo = true ) {
  33      $logo       = get_custom_logo();
  34      $site_title = get_bloginfo( 'name' );
  35      $contents   = '';
  36      $classname  = '';
  37  
  38      $defaults = array(
  39          'logo'        => '%1$s<span class="screen-reader-text">%2$s</span>',
  40          'logo_class'  => 'site-logo',
  41          'title'       => '<a href="%1$s">%2$s</a>',
  42          'title_class' => 'site-title',
  43          'home_wrap'   => '<h1 class="%1$s">%2$s</h1>',
  44          'single_wrap' => '<div class="%1$s faux-heading">%2$s</div>',
  45          'condition'   => ( is_front_page() || is_home() ) && ! is_page(),
  46      );
  47  
  48      $args = wp_parse_args( $args, $defaults );
  49  
  50      /**
  51       * Filters the arguments for `twentytwenty_site_logo()`.
  52       *
  53       * @param array  $args     Parsed arguments.
  54       * @param array  $defaults Function's default arguments.
  55       */
  56      $args = apply_filters( 'twentytwenty_site_logo_args', $args, $defaults );
  57  
  58      if ( has_custom_logo() ) {
  59          $contents  = sprintf( $args['logo'], $logo, esc_html( $site_title ) );
  60          $classname = $args['logo_class'];
  61      } else {
  62          $contents  = sprintf( $args['title'], esc_url( get_home_url( null, '/' ) ), esc_html( $site_title ) );
  63          $classname = $args['title_class'];
  64      }
  65  
  66      $wrap = $args['condition'] ? 'home_wrap' : 'single_wrap';
  67  
  68      $html = sprintf( $args[ $wrap ], $classname, $contents );
  69  
  70      /**
  71       * Filters the arguments for `twentytwenty_site_logo()`.
  72       *
  73       * @param string $html      Compiled HTML based on our arguments.
  74       * @param array  $args      Parsed arguments.
  75       * @param string $classname Class name based on current view, home or single.
  76       * @param string $contents  HTML for site title or logo.
  77       */
  78      $html = apply_filters( 'twentytwenty_site_logo', $html, $args, $classname, $contents );
  79  
  80      if ( ! $echo ) {
  81          return $html;
  82      }
  83  
  84      echo $html; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
  85  
  86  }
  87  
  88  /**
  89   * Displays the site description.
  90   *
  91   * @param bool $echo Echo or return the html.
  92   * @return string The HTML to display.
  93   */
  94  function twentytwenty_site_description( $echo = true ) {
  95      $description = get_bloginfo( 'description' );
  96  
  97      if ( ! $description ) {
  98          return;
  99      }
 100  
 101      $wrapper = '<div class="site-description">%s</div><!-- .site-description -->';
 102  
 103      $html = sprintf( $wrapper, esc_html( $description ) );
 104  
 105      /**
 106       * Filters the HTML for the site description.
 107       *
 108       * @since Twenty Twenty 1.0
 109       *
 110       * @param string $html         The HTML to display.
 111       * @param string $description  Site description via `bloginfo()`.
 112       * @param string $wrapper      The format used in case you want to reuse it in a `sprintf()`.
 113       */
 114      $html = apply_filters( 'twentytwenty_site_description', $html, $description, $wrapper );
 115  
 116      if ( ! $echo ) {
 117          return $html;
 118      }
 119  
 120      echo $html; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 121  }
 122  
 123  /**
 124   * Comments
 125   */
 126  
 127  /**
 128   * Checks if the specified comment is written by the author of the post commented on.
 129   *
 130   * @param object $comment Comment data.
 131   * @return bool
 132   */
 133  function twentytwenty_is_comment_by_post_author( $comment = null ) {
 134  
 135      if ( is_object( $comment ) && $comment->user_id > 0 ) {
 136  
 137          $user = get_userdata( $comment->user_id );
 138          $post = get_post( $comment->comment_post_ID );
 139  
 140          if ( ! empty( $user ) && ! empty( $post ) ) {
 141  
 142              return $comment->user_id === $post->post_author;
 143  
 144          }
 145      }
 146      return false;
 147  
 148  }
 149  
 150  /**
 151   * Filters comment reply link to not JS scroll.
 152   *
 153   * Filter the comment reply link to add a class indicating it should not use JS slow-scroll, as it
 154   * makes it scroll to the wrong position on the page.
 155   *
 156   * @param string $link Link to the top of the page.
 157   * @return string Link to the top of the page.
 158   */
 159  function twentytwenty_filter_comment_reply_link( $link ) {
 160  
 161      $link = str_replace( 'class=\'', 'class=\'do-not-scroll ', $link );
 162      return $link;
 163  
 164  }
 165  
 166  add_filter( 'comment_reply_link', 'twentytwenty_filter_comment_reply_link' );
 167  
 168  /**
 169   * Post Meta
 170   */
 171  
 172  /**
 173   * Retrieves and displays the post meta.
 174   *
 175   * If it's a single post, outputs the post meta values specified in the Customizer settings.
 176   *
 177   * @param int    $post_id  The ID of the post for which the post meta should be output.
 178   * @param string $location Which post meta location to output – single or preview.
 179   */
 180  function twentytwenty_the_post_meta( $post_id = null, $location = 'single-top' ) {
 181  
 182      echo twentytwenty_get_post_meta( $post_id, $location ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Escaped in twentytwenty_get_post_meta().
 183  
 184  }
 185  
 186  /**
 187   * Filters the edit post link to add an icon and use the post meta structure.
 188   *
 189   * @param string $link    Anchor tag for the edit link.
 190   * @param int    $post_id Post ID.
 191   * @param string $text    Anchor text.
 192   */
 193  function twentytwenty_edit_post_link( $link, $post_id, $text ) {
 194      if ( is_admin() ) {
 195          return $link;
 196      }
 197  
 198      $edit_url = get_edit_post_link( $post_id );
 199  
 200      if ( ! $edit_url ) {
 201          return;
 202      }
 203  
 204      $text = sprintf(
 205          wp_kses(
 206              /* translators: %s: Post title. Only visible to screen readers. */
 207              __( 'Edit <span class="screen-reader-text">%s</span>', 'twentytwenty' ),
 208              array(
 209                  'span' => array(
 210                      'class' => array(),
 211                  ),
 212              )
 213          ),
 214          get_the_title( $post_id )
 215      );
 216  
 217      return '<div class="post-meta-wrapper post-meta-edit-link-wrapper"><ul class="post-meta"><li class="post-edit meta-wrapper"><span class="meta-icon">' . twentytwenty_get_theme_svg( 'edit' ) . '</span><span class="meta-text"><a href="' . esc_url( $edit_url ) . '">' . $text . '</a></span></li></ul><!-- .post-meta --></div><!-- .post-meta-wrapper -->';
 218  
 219  }
 220  
 221  add_filter( 'edit_post_link', 'twentytwenty_edit_post_link', 10, 3 );
 222  
 223  /**
 224   * Retrieves the post meta.
 225   *
 226   * @param int    $post_id The ID of the post.
 227   * @param string $location The location where the meta is shown.
 228   */
 229  function twentytwenty_get_post_meta( $post_id = null, $location = 'single-top' ) {
 230  
 231      // Require post ID.
 232      if ( ! $post_id ) {
 233          return;
 234      }
 235  
 236      /**
 237       * Filters post types array.
 238       *
 239       * This filter can be used to hide post meta information of post, page or custom post type
 240       * registered by child themes or plugins.
 241       *
 242       * @since Twenty Twenty 1.0
 243       *
 244       * @param array Array of post types
 245       */
 246      $disallowed_post_types = apply_filters( 'twentytwenty_disallowed_post_types_for_meta_output', array( 'page' ) );
 247  
 248      // Check whether the post type is allowed to output post meta.
 249      if ( in_array( get_post_type( $post_id ), $disallowed_post_types, true ) ) {
 250          return;
 251      }
 252  
 253      $post_meta_wrapper_classes = '';
 254      $post_meta_classes         = '';
 255  
 256      // Get the post meta settings for the location specified.
 257      if ( 'single-top' === $location ) {
 258          /**
 259           * Filters post meta info visibility.
 260           *
 261           * Use this filter to hide post meta information like Author, Post date, Comments, Is sticky status.
 262           *
 263           * @since Twenty Twenty 1.0
 264           *
 265           * @param array $args {
 266           *  @type string 'author'
 267           *  @type string 'post-date'
 268           *  @type string 'comments'
 269           *  @type string 'sticky'
 270           * }
 271           */
 272          $post_meta = apply_filters(
 273              'twentytwenty_post_meta_location_single_top',
 274              array(
 275                  'author',
 276                  'post-date',
 277                  'comments',
 278                  'sticky',
 279              )
 280          );
 281  
 282          $post_meta_wrapper_classes = ' post-meta-single post-meta-single-top';
 283  
 284      } elseif ( 'single-bottom' === $location ) {
 285  
 286          /**
 287           * Filters post tags visibility.
 288           *
 289           * Use this filter to hide post tags.
 290           *
 291           * @since Twenty Twenty 1.0
 292           *
 293           * @param array $args {
 294           *   @type string 'tags'
 295           * }
 296           */
 297          $post_meta = apply_filters(
 298              'twentytwenty_post_meta_location_single_bottom',
 299              array(
 300                  'tags',
 301              )
 302          );
 303  
 304          $post_meta_wrapper_classes = ' post-meta-single post-meta-single-bottom';
 305  
 306      }
 307  
 308      // If the post meta setting has the value 'empty', it's explicitly empty and the default post meta shouldn't be output.
 309      if ( $post_meta && ! in_array( 'empty', $post_meta, true ) ) {
 310  
 311          // Make sure we don't output an empty container.
 312          $has_meta = false;
 313  
 314          global $post;
 315          $the_post = get_post( $post_id );
 316          setup_postdata( $the_post );
 317  
 318          ob_start();
 319  
 320          ?>
 321  
 322          <div class="post-meta-wrapper<?php echo esc_attr( $post_meta_wrapper_classes ); ?>">
 323  
 324              <ul class="post-meta<?php echo esc_attr( $post_meta_classes ); ?>">
 325  
 326                  <?php
 327  
 328                  /**
 329                   * Fires before post meta HTML display.
 330                   *
 331                   * Allow output of additional post meta info to be added by child themes and plugins.
 332                   *
 333                   * @since Twenty Twenty 1.0
 334                   * @since Twenty Twenty 1.1 Added the `$post_meta` and `$location` parameters.
 335                   *
 336                   * @param int    $post_id   Post ID.
 337                   * @param array  $post_meta An array of post meta information.
 338                   * @param string $location  The location where the meta is shown.
 339                   *                          Accepts 'single-top' or 'single-bottom'.
 340                   */
 341                  do_action( 'twentytwenty_start_of_post_meta_list', $post_id, $post_meta, $location );
 342  
 343                  // Author.
 344                  if ( post_type_supports( get_post_type( $post_id ), 'author' ) && in_array( 'author', $post_meta, true ) ) {
 345  
 346                      $has_meta = true;
 347                      ?>
 348                      <li class="post-author meta-wrapper">
 349                          <span class="meta-icon">
 350                              <span class="screen-reader-text"><?php _e( 'Post author', 'twentytwenty' ); ?></span>
 351                              <?php twentytwenty_the_theme_svg( 'user' ); ?>
 352                          </span>
 353                          <span class="meta-text">
 354                              <?php
 355                              printf(
 356                                  /* translators: %s: Author name. */
 357                                  __( 'By %s', 'twentytwenty' ),
 358                                  '<a href="' . esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ) . '">' . esc_html( get_the_author_meta( 'display_name' ) ) . '</a>'
 359                              );
 360                              ?>
 361                          </span>
 362                      </li>
 363                      <?php
 364  
 365                  }
 366  
 367                  // Post date.
 368                  if ( in_array( 'post-date', $post_meta, true ) ) {
 369  
 370                      $has_meta = true;
 371                      ?>
 372                      <li class="post-date meta-wrapper">
 373                          <span class="meta-icon">
 374                              <span class="screen-reader-text"><?php _e( 'Post date', 'twentytwenty' ); ?></span>
 375                              <?php twentytwenty_the_theme_svg( 'calendar' ); ?>
 376                          </span>
 377                          <span class="meta-text">
 378                              <a href="<?php the_permalink(); ?>"><?php the_time( get_option( 'date_format' ) ); ?></a>
 379                          </span>
 380                      </li>
 381                      <?php
 382  
 383                  }
 384  
 385                  // Categories.
 386                  if ( in_array( 'categories', $post_meta, true ) && has_category() ) {
 387  
 388                      $has_meta = true;
 389                      ?>
 390                      <li class="post-categories meta-wrapper">
 391                          <span class="meta-icon">
 392                              <span class="screen-reader-text"><?php _e( 'Categories', 'twentytwenty' ); ?></span>
 393                              <?php twentytwenty_the_theme_svg( 'folder' ); ?>
 394                          </span>
 395                          <span class="meta-text">
 396                              <?php _ex( 'In', 'A string that is output before one or more categories', 'twentytwenty' ); ?> <?php the_category( ', ' ); ?>
 397                          </span>
 398                      </li>
 399                      <?php
 400  
 401                  }
 402  
 403                  // Tags.
 404                  if ( in_array( 'tags', $post_meta, true ) && has_tag() ) {
 405  
 406                      $has_meta = true;
 407                      ?>
 408                      <li class="post-tags meta-wrapper">
 409                          <span class="meta-icon">
 410                              <span class="screen-reader-text"><?php _e( 'Tags', 'twentytwenty' ); ?></span>
 411                              <?php twentytwenty_the_theme_svg( 'tag' ); ?>
 412                          </span>
 413                          <span class="meta-text">
 414                              <?php the_tags( '', ', ', '' ); ?>
 415                          </span>
 416                      </li>
 417                      <?php
 418  
 419                  }
 420  
 421                  // Comments link.
 422                  if ( in_array( 'comments', $post_meta, true ) && ! post_password_required() && ( comments_open() || get_comments_number() ) ) {
 423  
 424                      $has_meta = true;
 425                      ?>
 426                      <li class="post-comment-link meta-wrapper">
 427                          <span class="meta-icon">
 428                              <?php twentytwenty_the_theme_svg( 'comment' ); ?>
 429                          </span>
 430                          <span class="meta-text">
 431                              <?php comments_popup_link(); ?>
 432                          </span>
 433                      </li>
 434                      <?php
 435  
 436                  }
 437  
 438                  // Sticky.
 439                  if ( in_array( 'sticky', $post_meta, true ) && is_sticky() ) {
 440  
 441                      $has_meta = true;
 442                      ?>
 443                      <li class="post-sticky meta-wrapper">
 444                          <span class="meta-icon">
 445                              <?php twentytwenty_the_theme_svg( 'bookmark' ); ?>
 446                          </span>
 447                          <span class="meta-text">
 448                              <?php _e( 'Sticky post', 'twentytwenty' ); ?>
 449                          </span>
 450                      </li>
 451                      <?php
 452  
 453                  }
 454  
 455                  /**
 456                   * Fires after post meta HTML display.
 457                   *
 458                   * Allow output of additional post meta info to be added by child themes and plugins.
 459                   *
 460                   * @since Twenty Twenty 1.0
 461                   * @since Twenty Twenty 1.1 Added the `$post_meta` and `$location` parameters.
 462                   *
 463                   * @param int    $post_id   Post ID.
 464                   * @param array  $post_meta An array of post meta information.
 465                   * @param string $location  The location where the meta is shown.
 466                   *                          Accepts 'single-top' or 'single-bottom'.
 467                   */
 468                  do_action( 'twentytwenty_end_of_post_meta_list', $post_id, $post_meta, $location );
 469  
 470                  ?>
 471  
 472              </ul><!-- .post-meta -->
 473  
 474          </div><!-- .post-meta-wrapper -->
 475  
 476          <?php
 477  
 478          wp_reset_postdata();
 479  
 480          $meta_output = ob_get_clean();
 481  
 482          // If there is meta to output, return it.
 483          if ( $has_meta && $meta_output ) {
 484  
 485              return $meta_output;
 486  
 487          }
 488      }
 489  
 490  }
 491  
 492  /**
 493   * Menus
 494   */
 495  
 496  /**
 497   * Filters classes of wp_list_pages items to match menu items.
 498   *
 499   * Filter the class applied to wp_list_pages() items with children to match the menu class, to simplify.
 500   * styling of sub levels in the fallback. Only applied if the match_menu_classes argument is set.
 501   *
 502   * @param string[] $css_class    An array of CSS classes to be applied to each list item.
 503   * @param WP_Post  $page         Page data object.
 504   * @param int      $depth        Depth of page, used for padding.
 505   * @param array    $args         An array of arguments.
 506   * @param int      $current_page ID of the current page.
 507   * @return array CSS class names.
 508   */
 509  function twentytwenty_filter_wp_list_pages_item_classes( $css_class, $page, $depth, $args, $current_page ) {
 510  
 511      // Only apply to wp_list_pages() calls with match_menu_classes set to true.
 512      $match_menu_classes = isset( $args['match_menu_classes'] );
 513  
 514      if ( ! $match_menu_classes ) {
 515          return $css_class;
 516      }
 517  
 518      // Add current menu item class.
 519      if ( in_array( 'current_page_item', $css_class, true ) ) {
 520          $css_class[] = 'current-menu-item';
 521      }
 522  
 523      // Add menu item has children class.
 524      if ( in_array( 'page_item_has_children', $css_class, true ) ) {
 525          $css_class[] = 'menu-item-has-children';
 526      }
 527  
 528      return $css_class;
 529  
 530  }
 531  
 532  add_filter( 'page_css_class', 'twentytwenty_filter_wp_list_pages_item_classes', 10, 5 );
 533  
 534  /**
 535   * Adds a Sub Nav Toggle to the Expanded Menu and Mobile Menu.
 536   *
 537   * @param stdClass $args  An object of wp_nav_menu() arguments.
 538   * @param WP_Post  $item  Menu item data object.
 539   * @param int      $depth Depth of menu item. Used for padding.
 540   * @return stdClass An object of wp_nav_menu() arguments.
 541   */
 542  function twentytwenty_add_sub_toggles_to_main_menu( $args, $item, $depth ) {
 543  
 544      // Add sub menu toggles to the Expanded Menu with toggles.
 545      if ( isset( $args->show_toggles ) && $args->show_toggles ) {
 546  
 547          // Wrap the menu item link contents in a div, used for positioning.
 548          $args->before = '<div class="ancestor-wrapper">';
 549          $args->after  = '';
 550  
 551          // Add a toggle to items with children.
 552          if ( in_array( 'menu-item-has-children', $item->classes, true ) ) {
 553  
 554              $toggle_target_string = '.menu-modal .menu-item-' . $item->ID . ' > .sub-menu';
 555              $toggle_duration      = twentytwenty_toggle_duration();
 556  
 557              // Add the sub menu toggle.
 558              $args->after .= '<button class="toggle sub-menu-toggle fill-children-current-color" data-toggle-target="' . $toggle_target_string . '" data-toggle-type="slidetoggle" data-toggle-duration="' . absint( $toggle_duration ) . '" aria-expanded="false"><span class="screen-reader-text">' . __( 'Show sub menu', 'twentytwenty' ) . '</span>' . twentytwenty_get_theme_svg( 'chevron-down' ) . '</button>';
 559  
 560          }
 561  
 562          // Close the wrapper.
 563          $args->after .= '</div><!-- .ancestor-wrapper -->';
 564  
 565          // Add sub menu icons to the primary menu without toggles.
 566      } elseif ( 'primary' === $args->theme_location ) {
 567          if ( in_array( 'menu-item-has-children', $item->classes, true ) ) {
 568              $args->after = '<span class="icon"></span>';
 569          } else {
 570              $args->after = '';
 571          }
 572      }
 573  
 574      return $args;
 575  
 576  }
 577  
 578  add_filter( 'nav_menu_item_args', 'twentytwenty_add_sub_toggles_to_main_menu', 10, 3 );
 579  
 580  /**
 581   * Displays SVG icons in social links menu.
 582   *
 583   * @param string   $item_output The menu item's starting HTML output.
 584   * @param WP_Post  $item        Menu item data object.
 585   * @param int      $depth       Depth of the menu. Used for padding.
 586   * @param stdClass $args        An object of wp_nav_menu() arguments.
 587   * @return string The menu item output with social icon.
 588   */
 589  function twentytwenty_nav_menu_social_icons( $item_output, $item, $depth, $args ) {
 590      // Change SVG icon inside social links menu if there is supported URL.
 591      if ( 'social' === $args->theme_location ) {
 592          $svg = TwentyTwenty_SVG_Icons::get_social_link_svg( $item->url );
 593          if ( empty( $svg ) ) {
 594              $svg = twentytwenty_get_theme_svg( 'link' );
 595          }
 596          $item_output = str_replace( $args->link_after, '</span>' . $svg, $item_output );
 597      }
 598  
 599      return $item_output;
 600  }
 601  
 602  add_filter( 'walker_nav_menu_start_el', 'twentytwenty_nav_menu_social_icons', 10, 4 );
 603  
 604  /**
 605   * Classes
 606   */
 607  
 608  /**
 609   * Adds 'no-js' class.
 610   *
 611   * If we're missing JavaScript support, the HTML element will have a 'no-js' class.
 612   */
 613  function twentytwenty_no_js_class() {
 614  
 615      ?>
 616      <script>document.documentElement.className = document.documentElement.className.replace( 'no-js', 'js' );</script>
 617      <?php
 618  
 619  }
 620  
 621  add_action( 'wp_head', 'twentytwenty_no_js_class' );
 622  
 623  /**
 624   * Adds conditional body classes.
 625   *
 626   * @param array $classes Classes added to the body tag.
 627   * @return array Classes added to the body tag.
 628   */
 629  function twentytwenty_body_classes( $classes ) {
 630  
 631      global $post;
 632      $post_type = isset( $post ) ? $post->post_type : false;
 633  
 634      // Check whether we're singular.
 635      if ( is_singular() ) {
 636          $classes[] = 'singular';
 637      }
 638  
 639      // Check whether the current page should have an overlay header.
 640      if ( is_page_template( array( 'templates/template-cover.php' ) ) ) {
 641          $classes[] = 'overlay-header';
 642      }
 643  
 644      // Check whether the current page has full-width content.
 645      if ( is_page_template( array( 'templates/template-full-width.php' ) ) ) {
 646          $classes[] = 'has-full-width-content';
 647      }
 648  
 649      // Check for enabled search.
 650      if ( true === get_theme_mod( 'enable_header_search', true ) ) {
 651          $classes[] = 'enable-search-modal';
 652      }
 653  
 654      // Check for post thumbnail.
 655      if ( is_singular() && has_post_thumbnail() ) {
 656          $classes[] = 'has-post-thumbnail';
 657      } elseif ( is_singular() ) {
 658          $classes[] = 'missing-post-thumbnail';
 659      }
 660  
 661      // Check whether we're in the customizer preview.
 662      if ( is_customize_preview() ) {
 663          $classes[] = 'customizer-preview';
 664      }
 665  
 666      // Check if posts have single pagination.
 667      if ( is_single() && ( get_next_post() || get_previous_post() ) ) {
 668          $classes[] = 'has-single-pagination';
 669      } else {
 670          $classes[] = 'has-no-pagination';
 671      }
 672  
 673      // Check if we're showing comments.
 674      if ( $post && ( ( 'post' === $post_type || comments_open() || get_comments_number() ) && ! post_password_required() ) ) {
 675          $classes[] = 'showing-comments';
 676      } else {
 677          $classes[] = 'not-showing-comments';
 678      }
 679  
 680      // Check if avatars are visible.
 681      $classes[] = get_option( 'show_avatars' ) ? 'show-avatars' : 'hide-avatars';
 682  
 683      // Slim page template class names (class = name - file suffix).
 684      if ( is_page_template() ) {
 685          $classes[] = basename( get_page_template_slug(), '.php' );
 686      }
 687  
 688      // Check for the elements output in the top part of the footer.
 689      $has_footer_menu = has_nav_menu( 'footer' );
 690      $has_social_menu = has_nav_menu( 'social' );
 691      $has_sidebar_1   = is_active_sidebar( 'sidebar-1' );
 692      $has_sidebar_2   = is_active_sidebar( 'sidebar-2' );
 693  
 694      // Add a class indicating whether those elements are output.
 695      if ( $has_footer_menu || $has_social_menu || $has_sidebar_1 || $has_sidebar_2 ) {
 696          $classes[] = 'footer-top-visible';
 697      } else {
 698          $classes[] = 'footer-top-hidden';
 699      }
 700  
 701      // Get header/footer background color.
 702      $header_footer_background = get_theme_mod( 'header_footer_background_color', '#ffffff' );
 703      $header_footer_background = strtolower( '#' . ltrim( $header_footer_background, '#' ) );
 704  
 705      // Get content background color.
 706      $background_color = get_theme_mod( 'background_color', 'f5efe0' );
 707      $background_color = strtolower( '#' . ltrim( $background_color, '#' ) );
 708  
 709      // Add extra class if main background and header/footer background are the same color.
 710      if ( $background_color === $header_footer_background ) {
 711          $classes[] = 'reduced-spacing';
 712      }
 713  
 714      return $classes;
 715  
 716  }
 717  
 718  add_filter( 'body_class', 'twentytwenty_body_classes' );
 719  
 720  /**
 721   * Archives
 722   */
 723  
 724  /**
 725   * Filters the archive title and styles the word before the first colon.
 726   *
 727   * @param string $title Current archive title.
 728   * @return string Current archive title.
 729   */
 730  function twentytwenty_get_the_archive_title( $title ) {
 731  
 732      $regex = apply_filters(
 733          'twentytwenty_get_the_archive_title_regex',
 734          array(
 735              'pattern'     => '/(\A[^\:]+\:)/',
 736              'replacement' => '<span class="color-accent">$1</span>',
 737          )
 738      );
 739  
 740      if ( empty( $regex ) ) {
 741  
 742          return $title;
 743  
 744      }
 745  
 746      return preg_replace( $regex['pattern'], $regex['replacement'], $title );
 747  
 748  }
 749  
 750  add_filter( 'get_the_archive_title', 'twentytwenty_get_the_archive_title' );
 751  
 752  /**
 753   * Miscellaneous
 754   */
 755  
 756  /**
 757   * Toggles animation duration in milliseconds.
 758   *
 759   * @return int Duration in milliseconds
 760   */
 761  function twentytwenty_toggle_duration() {
 762      /**
 763       * Filters the animation duration/speed used usually for submenu toggles.
 764       *
 765       * @since Twenty Twenty 1.0
 766       *
 767       * @param int $duration Duration in milliseconds.
 768       */
 769      $duration = apply_filters( 'twentytwenty_toggle_duration', 250 );
 770  
 771      return $duration;
 772  }
 773  
 774  /**
 775   * Gets unique ID.
 776   *
 777   * This is a PHP implementation of Underscore's uniqueId method. A static variable
 778   * contains an integer that is incremented with each call. This number is returned
 779   * with the optional prefix. As such the returned value is not universally unique,
 780   * but it is unique across the life of the PHP process.
 781   *
 782   * @see wp_unique_id() Themes requiring WordPress 5.0.3 and greater should use this instead.
 783   *
 784   * @param string $prefix Prefix for the returned ID.
 785   * @return string Unique ID.
 786   */
 787  function twentytwenty_unique_id( $prefix = '' ) {
 788      static $id_counter = 0;
 789      if ( function_exists( 'wp_unique_id' ) ) {
 790          return wp_unique_id( $prefix );
 791      }
 792      return $prefix . (string) ++$id_counter;
 793  }


Generated : Thu Oct 22 08:20:02 2020 Cross-referenced by PHPXref