[Summary view] [Print] [Text view]

   1  <?php
   2  /**
   3   * Template WordPress Administration API.
   4   *
   5   * A Big Mess. Also some neat functions that are nicely written.
   6   *
   7   * @package WordPress
   8   * @subpackage Administration
   9   */
  10  
  11  /** Walker_Category_Checklist class */
  12  require_once ABSPATH . 'wp-admin/includes/class-walker-category-checklist.php';
  13  
  14  /** WP_Internal_Pointers class */
  15  require_once ABSPATH . 'wp-admin/includes/class-wp-internal-pointers.php';
  16  
  17  //
  18  // Category Checklists.
  19  //
  20  
  21  /**
  22   * Output an unordered list of checkbox input elements labeled with category names.
  23   *
  24   * @since 2.5.1
  25   *
  26   * @see wp_terms_checklist()
  27   *
  28   * @param int         $post_id              Optional. Post to generate a categories checklist for. Default 0.
  29   *                                          $selected_cats must not be an array. Default 0.
  30   * @param int         $descendants_and_self Optional. ID of the category to output along with its descendants.
  31   *                                          Default 0.
  32   * @param int[]|false $selected_cats        Optional. Array of category IDs to mark as checked. Default false.
  33   * @param int[]|false $popular_cats         Optional. Array of category IDs to receive the "popular-category" class.
  34   *                                          Default false.
  35   * @param Walker      $walker               Optional. Walker object to use to build the output.
  36   *                                          Default is a Walker_Category_Checklist instance.
  37   * @param bool        $checked_ontop        Optional. Whether to move checked items out of the hierarchy and to
  38   *                                          the top of the list. Default true.
  39   */
  40  function wp_category_checklist( $post_id = 0, $descendants_and_self = 0, $selected_cats = false, $popular_cats = false, $walker = null, $checked_ontop = true ) {
  41      wp_terms_checklist(
  42          $post_id,
  43          array(
  44              'taxonomy'             => 'category',
  45              'descendants_and_self' => $descendants_and_self,
  46              'selected_cats'        => $selected_cats,
  47              'popular_cats'         => $popular_cats,
  48              'walker'               => $walker,
  49              'checked_ontop'        => $checked_ontop,
  50          )
  51      );
  52  }
  53  
  54  /**
  55   * Output an unordered list of checkbox input elements labelled with term names.
  56   *
  57   * Taxonomy-independent version of wp_category_checklist().
  58   *
  59   * @since 3.0.0
  60   * @since 4.4.0 Introduced the `$echo` argument.
  61   *
  62   * @param int          $post_id Optional. Post ID. Default 0.
  63   * @param array|string $args {
  64   *     Optional. Array or string of arguments for generating a terms checklist. Default empty array.
  65   *
  66   *     @type int    $descendants_and_self ID of the category to output along with its descendants.
  67   *                                        Default 0.
  68   *     @type int[]  $selected_cats        Array of category IDs to mark as checked. Default false.
  69   *     @type int[]  $popular_cats         Array of category IDs to receive the "popular-category" class.
  70   *                                        Default false.
  71   *     @type Walker $walker               Walker object to use to build the output.
  72   *                                        Default is a Walker_Category_Checklist instance.
  73   *     @type string $taxonomy             Taxonomy to generate the checklist for. Default 'category'.
  74   *     @type bool   $checked_ontop        Whether to move checked items out of the hierarchy and to
  75   *                                        the top of the list. Default true.
  76   *     @type bool   $echo                 Whether to echo the generated markup. False to return the markup instead
  77   *                                        of echoing it. Default true.
  78   * }
  79   * @return string HTML list of input elements.
  80   */
  81  function wp_terms_checklist( $post_id = 0, $args = array() ) {
  82      $defaults = array(
  83          'descendants_and_self' => 0,
  84          'selected_cats'        => false,
  85          'popular_cats'         => false,
  86          'walker'               => null,
  87          'taxonomy'             => 'category',
  88          'checked_ontop'        => true,
  89          'echo'                 => true,
  90      );
  91  
  92      /**
  93       * Filters the taxonomy terms checklist arguments.
  94       *
  95       * @since 3.4.0
  96       *
  97       * @see wp_terms_checklist()
  98       *
  99       * @param array $args    An array of arguments.
 100       * @param int   $post_id The post ID.
 101       */
 102      $params = apply_filters( 'wp_terms_checklist_args', $args, $post_id );
 103  
 104      $parsed_args = wp_parse_args( $params, $defaults );
 105  
 106      if ( empty( $parsed_args['walker'] ) || ! ( $parsed_args['walker'] instanceof Walker ) ) {
 107          $walker = new Walker_Category_Checklist;
 108      } else {
 109          $walker = $parsed_args['walker'];
 110      }
 111  
 112      $taxonomy             = $parsed_args['taxonomy'];
 113      $descendants_and_self = (int) $parsed_args['descendants_and_self'];
 114  
 115      $args = array( 'taxonomy' => $taxonomy );
 116  
 117      $tax              = get_taxonomy( $taxonomy );
 118      $args['disabled'] = ! current_user_can( $tax->cap->assign_terms );
 119  
 120      $args['list_only'] = ! empty( $parsed_args['list_only'] );
 121  
 122      if ( is_array( $parsed_args['selected_cats'] ) ) {
 123          $args['selected_cats'] = array_map( 'intval', $parsed_args['selected_cats'] );
 124      } elseif ( $post_id ) {
 125          $args['selected_cats'] = wp_get_object_terms( $post_id, $taxonomy, array_merge( $args, array( 'fields' => 'ids' ) ) );
 126      } else {
 127          $args['selected_cats'] = array();
 128      }
 129  
 130      if ( is_array( $parsed_args['popular_cats'] ) ) {
 131          $args['popular_cats'] = array_map( 'intval', $parsed_args['popular_cats'] );
 132      } else {
 133          $args['popular_cats'] = get_terms(
 134              array(
 135                  'taxonomy'     => $taxonomy,
 136                  'fields'       => 'ids',
 137                  'orderby'      => 'count',
 138                  'order'        => 'DESC',
 139                  'number'       => 10,
 140                  'hierarchical' => false,
 141              )
 142          );
 143      }
 144  
 145      if ( $descendants_and_self ) {
 146          $categories = (array) get_terms(
 147              array(
 148                  'taxonomy'     => $taxonomy,
 149                  'child_of'     => $descendants_and_self,
 150                  'hierarchical' => 0,
 151                  'hide_empty'   => 0,
 152              )
 153          );
 154          $self       = get_term( $descendants_and_self, $taxonomy );
 155          array_unshift( $categories, $self );
 156      } else {
 157          $categories = (array) get_terms(
 158              array(
 159                  'taxonomy' => $taxonomy,
 160                  'get'      => 'all',
 161              )
 162          );
 163      }
 164  
 165      $output = '';
 166  
 167      if ( $parsed_args['checked_ontop'] ) {
 168          // Post-process $categories rather than adding an exclude to the get_terms() query
 169          // to keep the query the same across all posts (for any query cache).
 170          $checked_categories = array();
 171          $keys               = array_keys( $categories );
 172  
 173          foreach ( $keys as $k ) {
 174              if ( in_array( $categories[ $k ]->term_id, $args['selected_cats'], true ) ) {
 175                  $checked_categories[] = $categories[ $k ];
 176                  unset( $categories[ $k ] );
 177              }
 178          }
 179  
 180          // Put checked categories on top.
 181          $output .= $walker->walk( $checked_categories, 0, $args );
 182      }
 183      // Then the rest of them.
 184      $output .= $walker->walk( $categories, 0, $args );
 185  
 186      if ( $parsed_args['echo'] ) {
 187          echo $output;
 188      }
 189  
 190      return $output;
 191  }
 192  
 193  /**
 194   * Retrieve a list of the most popular terms from the specified taxonomy.
 195   *
 196   * If the $echo argument is true then the elements for a list of checkbox
 197   * `<input>` elements labelled with the names of the selected terms is output.
 198   * If the $post_ID global isn't empty then the terms associated with that
 199   * post will be marked as checked.
 200   *
 201   * @since 2.5.0
 202   *
 203   * @param string $taxonomy Taxonomy to retrieve terms from.
 204   * @param int    $default  Not used.
 205   * @param int    $number   Number of terms to retrieve. Defaults to 10.
 206   * @param bool   $echo     Optionally output the list as well. Defaults to true.
 207   * @return int[] Array of popular term IDs.
 208   */
 209  function wp_popular_terms_checklist( $taxonomy, $default = 0, $number = 10, $echo = true ) {
 210      $post = get_post();
 211  
 212      if ( $post && $post->ID ) {
 213          $checked_terms = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );
 214      } else {
 215          $checked_terms = array();
 216      }
 217  
 218      $terms = get_terms(
 219          array(
 220              'taxonomy'     => $taxonomy,
 221              'orderby'      => 'count',
 222              'order'        => 'DESC',
 223              'number'       => $number,
 224              'hierarchical' => false,
 225          )
 226      );
 227  
 228      $tax = get_taxonomy( $taxonomy );
 229  
 230      $popular_ids = array();
 231  
 232      foreach ( (array) $terms as $term ) {
 233          $popular_ids[] = $term->term_id;
 234          if ( ! $echo ) { // Hack for Ajax use.
 235              continue;
 236          }
 237          $id      = "popular-$taxonomy-$term->term_id";
 238          $checked = in_array( $term->term_id, $checked_terms, true ) ? 'checked="checked"' : '';
 239          ?>
 240  
 241          <li id="<?php echo $id; ?>" class="popular-category">
 242              <label class="selectit">
 243                  <input id="in-<?php echo $id; ?>" type="checkbox" <?php echo $checked; ?> value="<?php echo (int) $term->term_id; ?>" <?php disabled( ! current_user_can( $tax->cap->assign_terms ) ); ?> />
 244                  <?php
 245                  /** This filter is documented in wp-includes/category-template.php */
 246                  echo esc_html( apply_filters( 'the_category', $term->name, '', '' ) );
 247                  ?>
 248              </label>
 249          </li>
 250  
 251          <?php
 252      }
 253      return $popular_ids;
 254  }
 255  
 256  /**
 257   * Outputs a link category checklist element.
 258   *
 259   * @since 2.5.1
 260   *
 261   * @param int $link_id
 262   */
 263  function wp_link_category_checklist( $link_id = 0 ) {
 264      $default = 1;
 265  
 266      $checked_categories = array();
 267  
 268      if ( $link_id ) {
 269          $checked_categories = wp_get_link_cats( $link_id );
 270          // No selected categories, strange.
 271          if ( ! count( $checked_categories ) ) {
 272              $checked_categories[] = $default;
 273          }
 274      } else {
 275          $checked_categories[] = $default;
 276      }
 277  
 278      $categories = get_terms(
 279          array(
 280              'taxonomy'   => 'link_category',
 281              'orderby'    => 'name',
 282              'hide_empty' => 0,
 283          )
 284      );
 285  
 286      if ( empty( $categories ) ) {
 287          return;
 288      }
 289  
 290      foreach ( $categories as $category ) {
 291          $cat_id = $category->term_id;
 292  
 293          /** This filter is documented in wp-includes/category-template.php */
 294          $name    = esc_html( apply_filters( 'the_category', $category->name, '', '' ) );
 295          $checked = in_array( $cat_id, $checked_categories, true ) ? ' checked="checked"' : '';
 296          echo '<li id="link-category-', $cat_id, '"><label for="in-link-category-', $cat_id, '" class="selectit"><input value="', $cat_id, '" type="checkbox" name="link_category[]" id="in-link-category-', $cat_id, '"', $checked, '/> ', $name, '</label></li>';
 297      }
 298  }
 299  
 300  /**
 301   * Adds hidden fields with the data for use in the inline editor for posts and pages.
 302   *
 303   * @since 2.7.0
 304   *
 305   * @param WP_Post $post Post object.
 306   */
 307  function get_inline_data( $post ) {
 308      $post_type_object = get_post_type_object( $post->post_type );
 309      if ( ! current_user_can( 'edit_post', $post->ID ) ) {
 310          return;
 311      }
 312  
 313      $title = esc_textarea( trim( $post->post_title ) );
 314  
 315      echo '
 316  <div class="hidden" id="inline_' . $post->ID . '">
 317      <div class="post_title">' . $title . '</div>' .
 318      /** This filter is documented in wp-admin/edit-tag-form.php */
 319      '<div class="post_name">' . apply_filters( 'editable_slug', $post->post_name, $post ) . '</div>
 320      <div class="post_author">' . $post->post_author . '</div>
 321      <div class="comment_status">' . esc_html( $post->comment_status ) . '</div>
 322      <div class="ping_status">' . esc_html( $post->ping_status ) . '</div>
 323      <div class="_status">' . esc_html( $post->post_status ) . '</div>
 324      <div class="jj">' . mysql2date( 'd', $post->post_date, false ) . '</div>
 325      <div class="mm">' . mysql2date( 'm', $post->post_date, false ) . '</div>
 326      <div class="aa">' . mysql2date( 'Y', $post->post_date, false ) . '</div>
 327      <div class="hh">' . mysql2date( 'H', $post->post_date, false ) . '</div>
 328      <div class="mn">' . mysql2date( 'i', $post->post_date, false ) . '</div>
 329      <div class="ss">' . mysql2date( 's', $post->post_date, false ) . '</div>
 330      <div class="post_password">' . esc_html( $post->post_password ) . '</div>';
 331  
 332      if ( $post_type_object->hierarchical ) {
 333          echo '<div class="post_parent">' . $post->post_parent . '</div>';
 334      }
 335  
 336      echo '<div class="page_template">' . ( $post->page_template ? esc_html( $post->page_template ) : 'default' ) . '</div>';
 337  
 338      if ( post_type_supports( $post->post_type, 'page-attributes' ) ) {
 339          echo '<div class="menu_order">' . $post->menu_order . '</div>';
 340      }
 341  
 342      $taxonomy_names = get_object_taxonomies( $post->post_type );
 343  
 344      foreach ( $taxonomy_names as $taxonomy_name ) {
 345          $taxonomy = get_taxonomy( $taxonomy_name );
 346  
 347          if ( $taxonomy->hierarchical && $taxonomy->show_ui ) {
 348  
 349              $terms = get_object_term_cache( $post->ID, $taxonomy_name );
 350              if ( false === $terms ) {
 351                  $terms = wp_get_object_terms( $post->ID, $taxonomy_name );
 352                  wp_cache_add( $post->ID, wp_list_pluck( $terms, 'term_id' ), $taxonomy_name . '_relationships' );
 353              }
 354              $term_ids = empty( $terms ) ? array() : wp_list_pluck( $terms, 'term_id' );
 355  
 356              echo '<div class="post_category" id="' . $taxonomy_name . '_' . $post->ID . '">' . implode( ',', $term_ids ) . '</div>';
 357  
 358          } elseif ( $taxonomy->show_ui ) {
 359  
 360              $terms_to_edit = get_terms_to_edit( $post->ID, $taxonomy_name );
 361              if ( ! is_string( $terms_to_edit ) ) {
 362                  $terms_to_edit = '';
 363              }
 364  
 365              echo '<div class="tags_input" id="' . $taxonomy_name . '_' . $post->ID . '">'
 366                  . esc_html( str_replace( ',', ', ', $terms_to_edit ) ) . '</div>';
 367  
 368          }
 369      }
 370  
 371      if ( ! $post_type_object->hierarchical ) {
 372          echo '<div class="sticky">' . ( is_sticky( $post->ID ) ? 'sticky' : '' ) . '</div>';
 373      }
 374  
 375      if ( post_type_supports( $post->post_type, 'post-formats' ) ) {
 376          echo '<div class="post_format">' . esc_html( get_post_format( $post->ID ) ) . '</div>';
 377      }
 378  
 379      /**
 380       * Fires after outputting the fields for the inline editor for posts and pages.
 381       *
 382       * @since 4.9.8
 383       *
 384       * @param WP_Post      $post             The current post object.
 385       * @param WP_Post_Type $post_type_object The current post's post type object.
 386       */
 387      do_action( 'add_inline_data', $post, $post_type_object );
 388  
 389      echo '</div>';
 390  }
 391  
 392  /**
 393   * Outputs the in-line comment reply-to form in the Comments list table.
 394   *
 395   * @since 2.7.0
 396   *
 397   * @global WP_List_Table $wp_list_table
 398   *
 399   * @param int    $position
 400   * @param bool   $checkbox
 401   * @param string $mode
 402   * @param bool   $table_row
 403   */
 404  function wp_comment_reply( $position = 1, $checkbox = false, $mode = 'single', $table_row = true ) {
 405      global $wp_list_table;
 406      /**
 407       * Filters the in-line comment reply-to form output in the Comments
 408       * list table.
 409       *
 410       * Returning a non-empty value here will short-circuit display
 411       * of the in-line comment-reply form in the Comments list table,
 412       * echoing the returned value instead.
 413       *
 414       * @since 2.7.0
 415       *
 416       * @see wp_comment_reply()
 417       *
 418       * @param string $content The reply-to form content.
 419       * @param array  $args    An array of default args.
 420       */
 421      $content = apply_filters(
 422          'wp_comment_reply',
 423          '',
 424          array(
 425              'position' => $position,
 426              'checkbox' => $checkbox,
 427              'mode'     => $mode,
 428          )
 429      );
 430  
 431      if ( ! empty( $content ) ) {
 432          echo $content;
 433          return;
 434      }
 435  
 436      if ( ! $wp_list_table ) {
 437          if ( 'single' === $mode ) {
 438              $wp_list_table = _get_list_table( 'WP_Post_Comments_List_Table' );
 439          } else {
 440              $wp_list_table = _get_list_table( 'WP_Comments_List_Table' );
 441          }
 442      }
 443  
 444      ?>
 445  <form method="get">
 446      <?php if ( $table_row ) : ?>
 447  <table style="display:none;"><tbody id="com-reply"><tr id="replyrow" class="inline-edit-row" style="display:none;"><td colspan="<?php echo $wp_list_table->get_column_count(); ?>" class="colspanchange">
 448  <?php else : ?>
 449  <div id="com-reply" style="display:none;"><div id="replyrow" style="display:none;">
 450  <?php endif; ?>
 451      <fieldset class="comment-reply">
 452      <legend>
 453          <span class="hidden" id="editlegend"><?php _e( 'Edit Comment' ); ?></span>
 454          <span class="hidden" id="replyhead"><?php _e( 'Reply to Comment' ); ?></span>
 455          <span class="hidden" id="addhead"><?php _e( 'Add new Comment' ); ?></span>
 456      </legend>
 457  
 458      <div id="replycontainer">
 459      <label for="replycontent" class="screen-reader-text"><?php _e( 'Comment' ); ?></label>
 460      <?php
 461      $quicktags_settings = array( 'buttons' => 'strong,em,link,block,del,ins,img,ul,ol,li,code,close' );
 462      wp_editor(
 463          '',
 464          'replycontent',
 465          array(
 466              'media_buttons' => false,
 467              'tinymce'       => false,
 468              'quicktags'     => $quicktags_settings,
 469          )
 470      );
 471      ?>
 472      </div>
 473  
 474      <div id="edithead" style="display:none;">
 475          <div class="inside">
 476          <label for="author-name"><?php _e( 'Name' ); ?></label>
 477          <input type="text" name="newcomment_author" size="50" value="" id="author-name" />
 478          </div>
 479  
 480          <div class="inside">
 481          <label for="author-email"><?php _e( 'Email' ); ?></label>
 482          <input type="text" name="newcomment_author_email" size="50" value="" id="author-email" />
 483          </div>
 484  
 485          <div class="inside">
 486          <label for="author-url"><?php _e( 'URL' ); ?></label>
 487          <input type="text" id="author-url" name="newcomment_author_url" class="code" size="103" value="" />
 488          </div>
 489      </div>
 490  
 491      <div id="replysubmit" class="submit">
 492          <p class="reply-submit-buttons">
 493              <button type="button" class="save button button-primary">
 494                  <span id="addbtn" style="display: none;"><?php _e( 'Add Comment' ); ?></span>
 495                  <span id="savebtn" style="display: none;"><?php _e( 'Update Comment' ); ?></span>
 496                  <span id="replybtn" style="display: none;"><?php _e( 'Submit Reply' ); ?></span>
 497              </button>
 498              <button type="button" class="cancel button"><?php _e( 'Cancel' ); ?></button>
 499              <span class="waiting spinner"></span>
 500          </p>
 501          <div class="notice notice-error notice-alt inline hidden">
 502              <p class="error"></p>
 503          </div>
 504      </div>
 505  
 506      <input type="hidden" name="action" id="action" value="" />
 507      <input type="hidden" name="comment_ID" id="comment_ID" value="" />
 508      <input type="hidden" name="comment_post_ID" id="comment_post_ID" value="" />
 509      <input type="hidden" name="status" id="status" value="" />
 510      <input type="hidden" name="position" id="position" value="<?php echo $position; ?>" />
 511      <input type="hidden" name="checkbox" id="checkbox" value="<?php echo $checkbox ? 1 : 0; ?>" />
 512      <input type="hidden" name="mode" id="mode" value="<?php echo esc_attr( $mode ); ?>" />
 513      <?php
 514          wp_nonce_field( 'replyto-comment', '_ajax_nonce-replyto-comment', false );
 515      if ( current_user_can( 'unfiltered_html' ) ) {
 516          wp_nonce_field( 'unfiltered-html-comment', '_wp_unfiltered_html_comment', false );
 517      }
 518      ?>
 519      </fieldset>
 520      <?php if ( $table_row ) : ?>
 521  </td></tr></tbody></table>
 522      <?php else : ?>
 523  </div></div>
 524      <?php endif; ?>
 525  </form>
 526      <?php
 527  }
 528  
 529  /**
 530   * Output 'undo move to Trash' text for comments
 531   *
 532   * @since 2.9.0
 533   */
 534  function wp_comment_trashnotice() {
 535      ?>
 536  <div class="hidden" id="trash-undo-holder">
 537      <div class="trash-undo-inside">
 538          <?php
 539          /* translators: %s: Comment author, filled by Ajax. */
 540          printf( __( 'Comment by %s moved to the Trash.' ), '<strong></strong>' );
 541          ?>
 542          <span class="undo untrash"><a href="#"><?php _e( 'Undo' ); ?></a></span>
 543      </div>
 544  </div>
 545  <div class="hidden" id="spam-undo-holder">
 546      <div class="spam-undo-inside">
 547          <?php
 548          /* translators: %s: Comment author, filled by Ajax. */
 549          printf( __( 'Comment by %s marked as spam.' ), '<strong></strong>' );
 550          ?>
 551          <span class="undo unspam"><a href="#"><?php _e( 'Undo' ); ?></a></span>
 552      </div>
 553  </div>
 554      <?php
 555  }
 556  
 557  /**
 558   * Outputs a post's public meta data in the Custom Fields meta box.
 559   *
 560   * @since 1.2.0
 561   *
 562   * @param array $meta
 563   */
 564  function list_meta( $meta ) {
 565      // Exit if no meta.
 566      if ( ! $meta ) {
 567          echo '
 568  <table id="list-table" style="display: none;">
 569      <thead>
 570      <tr>
 571          <th class="left">' . _x( 'Name', 'meta name' ) . '</th>
 572          <th>' . __( 'Value' ) . '</th>
 573      </tr>
 574      </thead>
 575      <tbody id="the-list" data-wp-lists="list:meta">
 576      <tr><td></td></tr>
 577      </tbody>
 578  </table>'; // TBODY needed for list-manipulation JS.
 579          return;
 580      }
 581      $count = 0;
 582      ?>
 583  <table id="list-table">
 584      <thead>
 585      <tr>
 586          <th class="left"><?php _ex( 'Name', 'meta name' ); ?></th>
 587          <th><?php _e( 'Value' ); ?></th>
 588      </tr>
 589      </thead>
 590      <tbody id='the-list' data-wp-lists='list:meta'>
 591      <?php
 592      foreach ( $meta as $entry ) {
 593          echo _list_meta_row( $entry, $count );
 594      }
 595      ?>
 596      </tbody>
 597  </table>
 598      <?php
 599  }
 600  
 601  /**
 602   * Outputs a single row of public meta data in the Custom Fields meta box.
 603   *
 604   * @since 2.5.0
 605   *
 606   * @param array $entry
 607   * @param int   $count
 608   * @return string
 609   */
 610  function _list_meta_row( $entry, &$count ) {
 611      static $update_nonce = '';
 612  
 613      if ( is_protected_meta( $entry['meta_key'], 'post' ) ) {
 614          return '';
 615      }
 616  
 617      if ( ! $update_nonce ) {
 618          $update_nonce = wp_create_nonce( 'add-meta' );
 619      }
 620  
 621      $r = '';
 622      ++ $count;
 623  
 624      if ( is_serialized( $entry['meta_value'] ) ) {
 625          if ( is_serialized_string( $entry['meta_value'] ) ) {
 626              // This is a serialized string, so we should display it.
 627              $entry['meta_value'] = maybe_unserialize( $entry['meta_value'] );
 628          } else {
 629              // This is a serialized array/object so we should NOT display it.
 630              --$count;
 631              return '';
 632          }
 633      }
 634  
 635      $entry['meta_key']   = esc_attr( $entry['meta_key'] );
 636      $entry['meta_value'] = esc_textarea( $entry['meta_value'] ); // Using a <textarea />.
 637      $entry['meta_id']    = (int) $entry['meta_id'];
 638  
 639      $delete_nonce = wp_create_nonce( 'delete-meta_' . $entry['meta_id'] );
 640  
 641      $r .= "\n\t<tr id='meta-{$entry['meta_id']}'>";
 642      $r .= "\n\t\t<td class='left'><label class='screen-reader-text' for='meta-{$entry['meta_id']}-key'>" . __( 'Key' ) . "</label><input name='meta[{$entry['meta_id']}][key]' id='meta-{$entry['meta_id']}-key' type='text' size='20' value='{$entry['meta_key']}' />";
 643  
 644      $r .= "\n\t\t<div class='submit'>";
 645      $r .= get_submit_button( __( 'Delete' ), 'deletemeta small', "deletemeta[{$entry['meta_id']}]", false, array( 'data-wp-lists' => "delete:the-list:meta-{$entry['meta_id']}::_ajax_nonce=$delete_nonce" ) );
 646      $r .= "\n\t\t";
 647      $r .= get_submit_button( __( 'Update' ), 'updatemeta small', "meta-{$entry['meta_id']}-submit", false, array( 'data-wp-lists' => "add:the-list:meta-{$entry['meta_id']}::_ajax_nonce-add-meta=$update_nonce" ) );
 648      $r .= '</div>';
 649      $r .= wp_nonce_field( 'change-meta', '_ajax_nonce', false, false );
 650      $r .= '</td>';
 651  
 652      $r .= "\n\t\t<td><label class='screen-reader-text' for='meta-{$entry['meta_id']}-value'>" . __( 'Value' ) . "</label><textarea name='meta[{$entry['meta_id']}][value]' id='meta-{$entry['meta_id']}-value' rows='2' cols='30'>{$entry['meta_value']}</textarea></td>\n\t</tr>";
 653      return $r;
 654  }
 655  
 656  /**
 657   * Prints the form in the Custom Fields meta box.
 658   *
 659   * @since 1.2.0
 660   *
 661   * @global wpdb $wpdb WordPress database abstraction object.
 662   *
 663   * @param WP_Post $post Optional. The post being edited.
 664   */
 665  function meta_form( $post = null ) {
 666      global $wpdb;
 667      $post = get_post( $post );
 668  
 669      /**
 670       * Filters values for the meta key dropdown in the Custom Fields meta box.
 671       *
 672       * Returning a non-null value will effectively short-circuit and avoid a
 673       * potentially expensive query against postmeta.
 674       *
 675       * @since 4.4.0
 676       *
 677       * @param array|null $keys Pre-defined meta keys to be used in place of a postmeta query. Default null.
 678       * @param WP_Post    $post The current post object.
 679       */
 680      $keys = apply_filters( 'postmeta_form_keys', null, $post );
 681  
 682      if ( null === $keys ) {
 683          /**
 684           * Filters the number of custom fields to retrieve for the drop-down
 685           * in the Custom Fields meta box.
 686           *
 687           * @since 2.1.0
 688           *
 689           * @param int $limit Number of custom fields to retrieve. Default 30.
 690           */
 691          $limit = apply_filters( 'postmeta_form_limit', 30 );
 692  
 693          $keys = $wpdb->get_col(
 694              $wpdb->prepare(
 695                  "SELECT DISTINCT meta_key
 696                  FROM $wpdb->postmeta
 697                  WHERE meta_key NOT BETWEEN '_' AND '_z'
 698                  HAVING meta_key NOT LIKE %s
 699                  ORDER BY meta_key
 700                  LIMIT %d",
 701                  $wpdb->esc_like( '_' ) . '%',
 702                  $limit
 703              )
 704          );
 705      }
 706  
 707      if ( $keys ) {
 708          natcasesort( $keys );
 709          $meta_key_input_id = 'metakeyselect';
 710      } else {
 711          $meta_key_input_id = 'metakeyinput';
 712      }
 713      ?>
 714  <p><strong><?php _e( 'Add New Custom Field:' ); ?></strong></p>
 715  <table id="newmeta">
 716  <thead>
 717  <tr>
 718  <th class="left"><label for="<?php echo $meta_key_input_id; ?>"><?php _ex( 'Name', 'meta name' ); ?></label></th>
 719  <th><label for="metavalue"><?php _e( 'Value' ); ?></label></th>
 720  </tr>
 721  </thead>
 722  
 723  <tbody>
 724  <tr>
 725  <td id="newmetaleft" class="left">
 726      <?php if ( $keys ) { ?>
 727  <select id="metakeyselect" name="metakeyselect">
 728  <option value="#NONE#"><?php _e( '&mdash; Select &mdash;' ); ?></option>
 729          <?php
 730          foreach ( $keys as $key ) {
 731              if ( is_protected_meta( $key, 'post' ) || ! current_user_can( 'add_post_meta', $post->ID, $key ) ) {
 732                  continue;
 733              }
 734              echo "\n<option value='" . esc_attr( $key ) . "'>" . esc_html( $key ) . '</option>';
 735          }
 736          ?>
 737  </select>
 738  <input class="hide-if-js" type="text" id="metakeyinput" name="metakeyinput" value="" />
 739  <a href="#postcustomstuff" class="hide-if-no-js" onclick="jQuery('#metakeyinput, #metakeyselect, #enternew, #cancelnew').toggle();return false;">
 740  <span id="enternew"><?php _e( 'Enter new' ); ?></span>
 741  <span id="cancelnew" class="hidden"><?php _e( 'Cancel' ); ?></span></a>
 742  <?php } else { ?>
 743  <input type="text" id="metakeyinput" name="metakeyinput" value="" />
 744  <?php } ?>
 745  </td>
 746  <td><textarea id="metavalue" name="metavalue" rows="2" cols="25"></textarea></td>
 747  </tr>
 748  
 749  <tr><td colspan="2">
 750  <div class="submit">
 751      <?php
 752      submit_button(
 753          __( 'Add Custom Field' ),
 754          '',
 755          'addmeta',
 756          false,
 757          array(
 758              'id'            => 'newmeta-submit',
 759              'data-wp-lists' => 'add:the-list:newmeta',
 760          )
 761      );
 762      ?>
 763  </div>
 764      <?php wp_nonce_field( 'add-meta', '_ajax_nonce-add-meta', false ); ?>
 765  </td></tr>
 766  </tbody>
 767  </table>
 768      <?php
 769  
 770  }
 771  
 772  /**
 773   * Print out HTML form date elements for editing post or comment publish date.
 774   *
 775   * @since 0.71
 776   * @since 4.4.0 Converted to use get_comment() instead of the global `$comment`.
 777   *
 778   * @global WP_Locale $wp_locale WordPress date and time locale object.
 779   *
 780   * @param int|bool $edit      Accepts 1|true for editing the date, 0|false for adding the date.
 781   * @param int|bool $for_post  Accepts 1|true for applying the date to a post, 0|false for a comment.
 782   * @param int      $tab_index The tabindex attribute to add. Default 0.
 783   * @param int|bool $multi     Optional. Whether the additional fields and buttons should be added.
 784   *                            Default 0|false.
 785   */
 786  function touch_time( $edit = 1, $for_post = 1, $tab_index = 0, $multi = 0 ) {
 787      global $wp_locale;
 788      $post = get_post();
 789  
 790      if ( $for_post ) {
 791          $edit = ! ( in_array( $post->post_status, array( 'draft', 'pending' ), true ) && ( ! $post->post_date_gmt || '0000-00-00 00:00:00' === $post->post_date_gmt ) );
 792      }
 793  
 794      $tab_index_attribute = '';
 795      if ( (int) $tab_index > 0 ) {
 796          $tab_index_attribute = " tabindex=\"$tab_index\"";
 797      }
 798  
 799      // @todo Remove this?
 800      // echo '<label for="timestamp" style="display: block;"><input type="checkbox" class="checkbox" name="edit_date" value="1" id="timestamp"'.$tab_index_attribute.' /> '.__( 'Edit timestamp' ).'</label><br />';
 801  
 802      $post_date = ( $for_post ) ? $post->post_date : get_comment()->comment_date;
 803      $jj        = ( $edit ) ? mysql2date( 'd', $post_date, false ) : current_time( 'd' );
 804      $mm        = ( $edit ) ? mysql2date( 'm', $post_date, false ) : current_time( 'm' );
 805      $aa        = ( $edit ) ? mysql2date( 'Y', $post_date, false ) : current_time( 'Y' );
 806      $hh        = ( $edit ) ? mysql2date( 'H', $post_date, false ) : current_time( 'H' );
 807      $mn        = ( $edit ) ? mysql2date( 'i', $post_date, false ) : current_time( 'i' );
 808      $ss        = ( $edit ) ? mysql2date( 's', $post_date, false ) : current_time( 's' );
 809  
 810      $cur_jj = current_time( 'd' );
 811      $cur_mm = current_time( 'm' );
 812      $cur_aa = current_time( 'Y' );
 813      $cur_hh = current_time( 'H' );
 814      $cur_mn = current_time( 'i' );
 815  
 816      $month = '<label><span class="screen-reader-text">' . __( 'Month' ) . '</span><select class="form-required" ' . ( $multi ? '' : 'id="mm" ' ) . 'name="mm"' . $tab_index_attribute . ">\n";
 817      for ( $i = 1; $i < 13; $i = $i + 1 ) {
 818          $monthnum  = zeroise( $i, 2 );
 819          $monthtext = $wp_locale->get_month_abbrev( $wp_locale->get_month( $i ) );
 820          $month    .= "\t\t\t" . '<option value="' . $monthnum . '" data-text="' . $monthtext . '" ' . selected( $monthnum, $mm, false ) . '>';
 821          /* translators: 1: Month number (01, 02, etc.), 2: Month abbreviation. */
 822          $month .= sprintf( __( '%1$s-%2$s' ), $monthnum, $monthtext ) . "</option>\n";
 823      }
 824      $month .= '</select></label>';
 825  
 826      $day    = '<label><span class="screen-reader-text">' . __( 'Day' ) . '</span><input type="text" ' . ( $multi ? '' : 'id="jj" ' ) . 'name="jj" value="' . $jj . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" class="form-required" /></label>';
 827      $year   = '<label><span class="screen-reader-text">' . __( 'Year' ) . '</span><input type="text" ' . ( $multi ? '' : 'id="aa" ' ) . 'name="aa" value="' . $aa . '" size="4" maxlength="4"' . $tab_index_attribute . ' autocomplete="off" class="form-required" /></label>';
 828      $hour   = '<label><span class="screen-reader-text">' . __( 'Hour' ) . '</span><input type="text" ' . ( $multi ? '' : 'id="hh" ' ) . 'name="hh" value="' . $hh . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" class="form-required" /></label>';
 829      $minute = '<label><span class="screen-reader-text">' . __( 'Minute' ) . '</span><input type="text" ' . ( $multi ? '' : 'id="mn" ' ) . 'name="mn" value="' . $mn . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" class="form-required" /></label>';
 830  
 831      echo '<div class="timestamp-wrap">';
 832      /* translators: 1: Month, 2: Day, 3: Year, 4: Hour, 5: Minute. */
 833      printf( __( '%1$s %2$s, %3$s at %4$s:%5$s' ), $month, $day, $year, $hour, $minute );
 834  
 835      echo '</div><input type="hidden" id="ss" name="ss" value="' . $ss . '" />';
 836  
 837      if ( $multi ) {
 838          return;
 839      }
 840  
 841      echo "\n\n";
 842  
 843      $map = array(
 844          'mm' => array( $mm, $cur_mm ),
 845          'jj' => array( $jj, $cur_jj ),
 846          'aa' => array( $aa, $cur_aa ),
 847          'hh' => array( $hh, $cur_hh ),
 848          'mn' => array( $mn, $cur_mn ),
 849      );
 850  
 851      foreach ( $map as $timeunit => $value ) {
 852          list( $unit, $curr ) = $value;
 853  
 854          echo '<input type="hidden" id="hidden_' . $timeunit . '" name="hidden_' . $timeunit . '" value="' . $unit . '" />' . "\n";
 855          $cur_timeunit = 'cur_' . $timeunit;
 856          echo '<input type="hidden" id="' . $cur_timeunit . '" name="' . $cur_timeunit . '" value="' . $curr . '" />' . "\n";
 857      }
 858      ?>
 859  
 860  <p>
 861  <a href="#edit_timestamp" class="save-timestamp hide-if-no-js button"><?php _e( 'OK' ); ?></a>
 862  <a href="#edit_timestamp" class="cancel-timestamp hide-if-no-js button-cancel"><?php _e( 'Cancel' ); ?></a>
 863  </p>
 864      <?php
 865  }
 866  
 867  /**
 868   * Print out option HTML elements for the page templates drop-down.
 869   *
 870   * @since 1.5.0
 871   * @since 4.7.0 Added the `$post_type` parameter.
 872   *
 873   * @param string $default   Optional. The template file name. Default empty.
 874   * @param string $post_type Optional. Post type to get templates for. Default 'post'.
 875   */
 876  function page_template_dropdown( $default = '', $post_type = 'page' ) {
 877      $templates = get_page_templates( null, $post_type );
 878  
 879      ksort( $templates );
 880  
 881      foreach ( array_keys( $templates ) as $template ) {
 882          $selected = selected( $default, $templates[ $template ], false );
 883          echo "\n\t<option value='" . esc_attr( $templates[ $template ] ) . "' $selected>" . esc_html( $template ) . '</option>';
 884      }
 885  }
 886  
 887  /**
 888   * Print out option HTML elements for the page parents drop-down.
 889   *
 890   * @since 1.5.0
 891   * @since 4.4.0 `$post` argument was added.
 892   *
 893   * @global wpdb $wpdb WordPress database abstraction object.
 894   *
 895   * @param int         $default Optional. The default page ID to be pre-selected. Default 0.
 896   * @param int         $parent  Optional. The parent page ID. Default 0.
 897   * @param int         $level   Optional. Page depth level. Default 0.
 898   * @param int|WP_Post $post    Post ID or WP_Post object.
 899   * @return void|false Void on success, false if the page has no children.
 900   */
 901  function parent_dropdown( $default = 0, $parent = 0, $level = 0, $post = null ) {
 902      global $wpdb;
 903  
 904      $post  = get_post( $post );
 905      $items = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_parent, post_title FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'page' ORDER BY menu_order", $parent ) );
 906  
 907      if ( $items ) {
 908          foreach ( $items as $item ) {
 909              // A page cannot be its own parent.
 910              if ( $post && $post->ID && (int) $item->ID === $post->ID ) {
 911                  continue;
 912              }
 913  
 914              $pad      = str_repeat( '&nbsp;', $level * 3 );
 915              $selected = selected( $default, $item->ID, false );
 916  
 917              echo "\n\t<option class='level-$level' value='$item->ID' $selected>$pad " . esc_html( $item->post_title ) . '</option>';
 918              parent_dropdown( $default, $item->ID, $level + 1 );
 919          }
 920      } else {
 921          return false;
 922      }
 923  }
 924  
 925  /**
 926   * Print out option HTML elements for role selectors.
 927   *
 928   * @since 2.1.0
 929   *
 930   * @param string $selected Slug for the role that should be already selected.
 931   */
 932  function wp_dropdown_roles( $selected = '' ) {
 933      $r = '';
 934  
 935      $editable_roles = array_reverse( get_editable_roles() );
 936  
 937      foreach ( $editable_roles as $role => $details ) {
 938          $name = translate_user_role( $details['name'] );
 939          // Preselect specified role.
 940          if ( $selected === $role ) {
 941              $r .= "\n\t<option selected='selected' value='" . esc_attr( $role ) . "'>$name</option>";
 942          } else {
 943              $r .= "\n\t<option value='" . esc_attr( $role ) . "'>$name</option>";
 944          }
 945      }
 946  
 947      echo $r;
 948  }
 949  
 950  /**
 951   * Outputs the form used by the importers to accept the data to be imported
 952   *
 953   * @since 2.0.0
 954   *
 955   * @param string $action The action attribute for the form.
 956   */
 957  function wp_import_upload_form( $action ) {
 958  
 959      /**
 960       * Filters the maximum allowed upload size for import files.
 961       *
 962       * @since 2.3.0
 963       *
 964       * @see wp_max_upload_size()
 965       *
 966       * @param int $max_upload_size Allowed upload size. Default 1 MB.
 967       */
 968      $bytes      = apply_filters( 'import_upload_size_limit', wp_max_upload_size() );
 969      $size       = size_format( $bytes );
 970      $upload_dir = wp_upload_dir();
 971      if ( ! empty( $upload_dir['error'] ) ) :
 972          ?>
 973          <div class="error"><p><?php _e( 'Before you can upload your import file, you will need to fix the following error:' ); ?></p>
 974          <p><strong><?php echo $upload_dir['error']; ?></strong></p></div>
 975                                  <?php
 976      else :
 977          ?>
 978  <form enctype="multipart/form-data" id="import-upload-form" method="post" class="wp-upload-form" action="<?php echo esc_url( wp_nonce_url( $action, 'import-upload' ) ); ?>">
 979  <p>
 980          <?php
 981          printf(
 982              '<label for="upload">%s</label> (%s)',
 983              __( 'Choose a file from your computer:' ),
 984              /* translators: %s: Maximum allowed file size. */
 985              sprintf( __( 'Maximum size: %s' ), $size )
 986          );
 987          ?>
 988  <input type="file" id="upload" name="import" size="25" />
 989  <input type="hidden" name="action" value="save" />
 990  <input type="hidden" name="max_file_size" value="<?php echo $bytes; ?>" />
 991  </p>
 992          <?php submit_button( __( 'Upload file and import' ), 'primary' ); ?>
 993  </form>
 994          <?php
 995      endif;
 996  }
 997  
 998  /**
 999   * Adds a meta box to one or more screens.
1000   *
1001   * @since 2.5.0
1002   * @since 4.4.0 The `$screen` parameter now accepts an array of screen IDs.
1003   *
1004   * @global array $wp_meta_boxes
1005   *
1006   * @param string                 $id            Meta box ID (used in the 'id' attribute for the meta box).
1007   * @param string                 $title         Title of the meta box.
1008   * @param callable               $callback      Function that fills the box with the desired content.
1009   *                                              The function should echo its output.
1010   * @param string|array|WP_Screen $screen        Optional. The screen or screens on which to show the box
1011   *                                              (such as a post type, 'link', or 'comment'). Accepts a single
1012   *                                              screen ID, WP_Screen object, or array of screen IDs. Default
1013   *                                              is the current screen.  If you have used add_menu_page() or
1014   *                                              add_submenu_page() to create a new screen (and hence screen_id),
1015   *                                              make sure your menu slug conforms to the limits of sanitize_key()
1016   *                                              otherwise the 'screen' menu may not correctly render on your page.
1017   * @param string                 $context       Optional. The context within the screen where the box
1018   *                                              should display. Available contexts vary from screen to
1019   *                                              screen. Post edit screen contexts include 'normal', 'side',
1020   *                                              and 'advanced'. Comments screen contexts include 'normal'
1021   *                                              and 'side'. Menus meta boxes (accordion sections) all use
1022   *                                              the 'side' context. Global default is 'advanced'.
1023   * @param string                 $priority      Optional. The priority within the context where the box should show.
1024   *                                              Accepts 'high', 'core', 'default', or 'low'. Default 'default'.
1025   * @param array                  $callback_args Optional. Data that should be set as the $args property
1026   *                                              of the box array (which is the second parameter passed
1027   *                                              to your callback). Default null.
1028   */
1029  function add_meta_box( $id, $title, $callback, $screen = null, $context = 'advanced', $priority = 'default', $callback_args = null ) {
1030      global $wp_meta_boxes;
1031  
1032      if ( empty( $screen ) ) {
1033          $screen = get_current_screen();
1034      } elseif ( is_string( $screen ) ) {
1035          $screen = convert_to_screen( $screen );
1036      } elseif ( is_array( $screen ) ) {
1037          foreach ( $screen as $single_screen ) {
1038              add_meta_box( $id, $title, $callback, $single_screen, $context, $priority, $callback_args );
1039          }
1040      }
1041  
1042      if ( ! isset( $screen->id ) ) {
1043          return;
1044      }
1045  
1046      $page = $screen->id;
1047  
1048      if ( ! isset( $wp_meta_boxes ) ) {
1049          $wp_meta_boxes = array();
1050      }
1051      if ( ! isset( $wp_meta_boxes[ $page ] ) ) {
1052          $wp_meta_boxes[ $page ] = array();
1053      }
1054      if ( ! isset( $wp_meta_boxes[ $page ][ $context ] ) ) {
1055          $wp_meta_boxes[ $page ][ $context ] = array();
1056      }
1057  
1058      foreach ( array_keys( $wp_meta_boxes[ $page ] ) as $a_context ) {
1059          foreach ( array( 'high', 'core', 'default', 'low' ) as $a_priority ) {
1060              if ( ! isset( $wp_meta_boxes[ $page ][ $a_context ][ $a_priority ][ $id ] ) ) {
1061                  continue;
1062              }
1063  
1064              // If a core box was previously removed, don't add.
1065              if ( ( 'core' === $priority || 'sorted' === $priority )
1066                  && false === $wp_meta_boxes[ $page ][ $a_context ][ $a_priority ][ $id ]
1067              ) {
1068                  return;
1069              }
1070  
1071              // If a core box was previously added by a plugin, don't add.
1072              if ( 'core' === $priority ) {
1073                  /*
1074                   * If the box was added with default priority, give it core priority
1075                   * to maintain sort order.
1076                   */
1077                  if ( 'default' === $a_priority ) {
1078                      $wp_meta_boxes[ $page ][ $a_context ]['core'][ $id ] = $wp_meta_boxes[ $page ][ $a_context ]['default'][ $id ];
1079                      unset( $wp_meta_boxes[ $page ][ $a_context ]['default'][ $id ] );
1080                  }
1081                  return;
1082              }
1083  
1084              // If no priority given and ID already present, use existing priority.
1085              if ( empty( $priority ) ) {
1086                  $priority = $a_priority;
1087                  /*
1088                   * Else, if we're adding to the sorted priority, we don't know the title
1089                   * or callback. Grab them from the previously added context/priority.
1090                   */
1091              } elseif ( 'sorted' === $priority ) {
1092                  $title         = $wp_meta_boxes[ $page ][ $a_context ][ $a_priority ][ $id ]['title'];
1093                  $callback      = $wp_meta_boxes[ $page ][ $a_context ][ $a_priority ][ $id ]['callback'];
1094                  $callback_args = $wp_meta_boxes[ $page ][ $a_context ][ $a_priority ][ $id ]['args'];
1095              }
1096  
1097              // An ID can be in only one priority and one context.
1098              if ( $priority !== $a_priority || $context !== $a_context ) {
1099                  unset( $wp_meta_boxes[ $page ][ $a_context ][ $a_priority ][ $id ] );
1100              }
1101          }
1102      }
1103  
1104      if ( empty( $priority ) ) {
1105          $priority = 'low';
1106      }
1107  
1108      if ( ! isset( $wp_meta_boxes[ $page ][ $context ][ $priority ] ) ) {
1109          $wp_meta_boxes[ $page ][ $context ][ $priority ] = array();
1110      }
1111  
1112      $wp_meta_boxes[ $page ][ $context ][ $priority ][ $id ] = array(
1113          'id'       => $id,
1114          'title'    => $title,
1115          'callback' => $callback,
1116          'args'     => $callback_args,
1117      );
1118  }
1119  
1120  
1121  /**
1122   * Function that renders a "fake" meta box with an information message,
1123   * shown on the block editor, when an incompatible meta box is found.
1124   *
1125   * @since 5.0.0
1126   *
1127   * @param mixed $object The data object being rendered on this screen.
1128   * @param array $box    {
1129   *     Custom formats meta box arguments.
1130   *
1131   *     @type string   $id           Meta box 'id' attribute.
1132   *     @type string   $title        Meta box title.
1133   *     @type callable $old_callback The original callback for this meta box.
1134   *     @type array    $args         Extra meta box arguments.
1135   * }
1136   */
1137  function do_block_editor_incompatible_meta_box( $object, $box ) {
1138      $plugin  = _get_plugin_from_callback( $box['old_callback'] );
1139      $plugins = get_plugins();
1140      echo '<p>';
1141      if ( $plugin ) {
1142          /* translators: %s: The name of the plugin that generated this meta box. */
1143          printf( __( "This meta box, from the %s plugin, isn't compatible with the block editor." ), "<strong>{$plugin['Name']}</strong>" );
1144      } else {
1145          _e( "This meta box isn't compatible with the block editor." );
1146      }
1147      echo '</p>';
1148  
1149      if ( empty( $plugins['classic-editor/classic-editor.php'] ) ) {
1150          if ( current_user_can( 'install_plugins' ) ) {
1151              echo '<p>';
1152              printf(
1153                  /* translators: %s: A link to install the Classic Editor plugin. */
1154                  __( 'Please install the <a href="%s">Classic Editor plugin</a> to use this meta box.' ),
1155                  esc_url( wp_nonce_url( self_admin_url( 'plugin-install.php?tab=favorites&user=wordpressdotorg&save=0' ), 'save_wporg_username_' . get_current_user_id() ) )
1156              );
1157              echo '</p>';
1158          }
1159      } elseif ( is_plugin_inactive( 'classic-editor/classic-editor.php' ) ) {
1160          if ( current_user_can( 'activate_plugins' ) ) {
1161              $activate_url = wp_nonce_url( self_admin_url( 'plugins.php?action=activate&plugin=classic-editor/classic-editor.php' ), 'activate-plugin_classic-editor/classic-editor.php' );
1162              echo '<p>';
1163              /* translators: %s: A link to activate the Classic Editor plugin. */
1164              printf( __( 'Please activate the <a href="%s">Classic Editor plugin</a> to use this meta box.' ), esc_url( $activate_url ) );
1165              echo '</p>';
1166          }
1167      } elseif ( $object instanceof WP_Post ) {
1168          $edit_url = add_query_arg(
1169              array(
1170                  'classic-editor'         => '',
1171                  'classic-editor__forget' => '',
1172              ),
1173              get_edit_post_link( $object )
1174          );
1175          echo '<p>';
1176          /* translators: %s: A link to use the Classic Editor plugin. */
1177          printf( __( 'Please open the <a href="%s">classic editor</a> to use this meta box.' ), esc_url( $edit_url ) );
1178          echo '</p>';
1179      }
1180  }
1181  
1182  /**
1183   * Internal helper function to find the plugin from a meta box callback.
1184   *
1185   * @since 5.0.0
1186   *
1187   * @access private
1188   *
1189   * @param callable $callback The callback function to check.
1190   * @return array|null The plugin that the callback belongs to, or null if it doesn't belong to a plugin.
1191   */
1192  function _get_plugin_from_callback( $callback ) {
1193      try {
1194          if ( is_array( $callback ) ) {
1195              $reflection = new ReflectionMethod( $callback[0], $callback[1] );
1196          } elseif ( is_string( $callback ) && false !== strpos( $callback, '::' ) ) {
1197              $reflection = new ReflectionMethod( $callback );
1198          } else {
1199              $reflection = new ReflectionFunction( $callback );
1200          }
1201      } catch ( ReflectionException $exception ) {
1202          // We could not properly reflect on the callable, so we abort here.
1203          return null;
1204      }
1205  
1206      // Don't show an error if it's an internal PHP function.
1207      if ( ! $reflection->isInternal() ) {
1208  
1209          // Only show errors if the meta box was registered by a plugin.
1210          $filename   = wp_normalize_path( $reflection->getFileName() );
1211          $plugin_dir = wp_normalize_path( WP_PLUGIN_DIR );
1212  
1213          if ( strpos( $filename, $plugin_dir ) === 0 ) {
1214              $filename = str_replace( $plugin_dir, '', $filename );
1215              $filename = preg_replace( '|^/([^/]*/).*$|', '\\1', $filename );
1216  
1217              $plugins = get_plugins();
1218  
1219              foreach ( $plugins as $name => $plugin ) {
1220                  if ( strpos( $name, $filename ) === 0 ) {
1221                      return $plugin;
1222                  }
1223              }
1224          }
1225      }
1226  
1227      return null;
1228  }
1229  
1230  /**
1231   * Meta-Box template function.
1232   *
1233   * @since 2.5.0
1234   *
1235   * @global array $wp_meta_boxes
1236   *
1237   * @param string|WP_Screen $screen  The screen identifier. If you have used add_menu_page() or
1238   *                                  add_submenu_page() to create a new screen (and hence screen_id)
1239   *                                  make sure your menu slug conforms to the limits of sanitize_key()
1240   *                                  otherwise the 'screen' menu may not correctly render on your page.
1241   * @param string           $context The screen context for which to display meta boxes.
1242   * @param mixed            $object  Gets passed to the meta box callback function as the first parameter.
1243   *                                  Often this is the object that's the focus of the current screen, for
1244   *                                  example a `WP_Post` or `WP_Comment` object.
1245   * @return int Number of meta_boxes.
1246   */
1247  function do_meta_boxes( $screen, $context, $object ) {
1248      global $wp_meta_boxes;
1249      static $already_sorted = false;
1250  
1251      if ( empty( $screen ) ) {
1252          $screen = get_current_screen();
1253      } elseif ( is_string( $screen ) ) {
1254          $screen = convert_to_screen( $screen );
1255      }
1256  
1257      $page = $screen->id;
1258  
1259      $hidden = get_hidden_meta_boxes( $screen );
1260  
1261      printf( '<div id="%s-sortables" class="meta-box-sortables">', esc_attr( $context ) );
1262  
1263      // Grab the ones the user has manually sorted.
1264      // Pull them out of their previous context/priority and into the one the user chose.
1265      $sorted = get_user_option( "meta-box-order_$page" );
1266  
1267      if ( ! $already_sorted && $sorted ) {
1268          foreach ( $sorted as $box_context => $ids ) {
1269              foreach ( explode( ',', $ids ) as $id ) {
1270                  if ( $id && 'dashboard_browser_nag' !== $id ) {
1271                      add_meta_box( $id, null, null, $screen, $box_context, 'sorted' );
1272                  }
1273              }
1274          }
1275      }
1276  
1277      $already_sorted = true;
1278  
1279      $i = 0;
1280  
1281      if ( isset( $wp_meta_boxes[ $page ][ $context ] ) ) {
1282          foreach ( array( 'high', 'sorted', 'core', 'default', 'low' ) as $priority ) {
1283              if ( isset( $wp_meta_boxes[ $page ][ $context ][ $priority ] ) ) {
1284                  foreach ( (array) $wp_meta_boxes[ $page ][ $context ][ $priority ] as $box ) {
1285                      if ( false === $box || ! $box['title'] ) {
1286                          continue;
1287                      }
1288  
1289                      $block_compatible = true;
1290                      if ( is_array( $box['args'] ) ) {
1291                          // If a meta box is just here for back compat, don't show it in the block editor.
1292                          if ( $screen->is_block_editor() && isset( $box['args']['__back_compat_meta_box'] ) && $box['args']['__back_compat_meta_box'] ) {
1293                              continue;
1294                          }
1295  
1296                          if ( isset( $box['args']['__block_editor_compatible_meta_box'] ) ) {
1297                              $block_compatible = (bool) $box['args']['__block_editor_compatible_meta_box'];
1298                              unset( $box['args']['__block_editor_compatible_meta_box'] );
1299                          }
1300  
1301                          // If the meta box is declared as incompatible with the block editor, override the callback function.
1302                          if ( ! $block_compatible && $screen->is_block_editor() ) {
1303                              $box['old_callback'] = $box['callback'];
1304                              $box['callback']     = 'do_block_editor_incompatible_meta_box';
1305                          }
1306  
1307                          if ( isset( $box['args']['__back_compat_meta_box'] ) ) {
1308                              $block_compatible = $block_compatible || (bool) $box['args']['__back_compat_meta_box'];
1309                              unset( $box['args']['__back_compat_meta_box'] );
1310                          }
1311                      }
1312  
1313                      $i++;
1314                      // get_hidden_meta_boxes() doesn't apply in the block editor.
1315                      $hidden_class = ( ! $screen->is_block_editor() && in_array( $box['id'], $hidden, true ) ) ? ' hide-if-js' : '';
1316                      echo '<div id="' . $box['id'] . '" class="postbox ' . postbox_classes( $box['id'], $page ) . $hidden_class . '" ' . '>' . "\n";
1317  
1318                      echo '<div class="postbox-header">';
1319                      echo '<h2 class="hndle">';
1320                      if ( 'dashboard_php_nag' === $box['id'] ) {
1321                          echo '<span aria-hidden="true" class="dashicons dashicons-warning"></span>';
1322                          echo '<span class="screen-reader-text">' . __( 'Warning:' ) . ' </span>';
1323                      }
1324                      echo $box['title'];
1325                      echo "</h2>\n";
1326  
1327                      if ( 'dashboard_browser_nag' !== $box['id'] ) {
1328                          $widget_title = $box['title'];
1329  
1330                          if ( is_array( $box['args'] ) && isset( $box['args']['__widget_basename'] ) ) {
1331                              $widget_title = $box['args']['__widget_basename'];
1332                              // Do not pass this parameter to the user callback function.
1333                              unset( $box['args']['__widget_basename'] );
1334                          }
1335  
1336                          echo '<div class="handle-actions hide-if-no-js">';
1337  
1338                          echo '<button type="button" class="handle-order-higher" aria-disabled="false" aria-describedby="' . $box['id'] . '-handle-order-higher-description">';
1339                          echo '<span class="screen-reader-text">' . __( 'Move up' ) . '</span>';
1340                          echo '<span class="order-higher-indicator" aria-hidden="true"></span>';
1341                          echo '</button>';
1342                          echo '<span class="hidden" id="' . $box['id'] . '-handle-order-higher-description">' . sprintf(
1343                              /* translators: %s: Meta box title. */
1344                              __( 'Move %s box up' ),
1345                              $widget_title
1346                          ) . '</span>';
1347  
1348                          echo '<button type="button" class="handle-order-lower" aria-disabled="false" aria-describedby="' . $box['id'] . '-handle-order-lower-description">';
1349                          echo '<span class="screen-reader-text">' . __( 'Move down' ) . '</span>';
1350                          echo '<span class="order-lower-indicator" aria-hidden="true"></span>';
1351                          echo '</button>';
1352                          echo '<span class="hidden" id="' . $box['id'] . '-handle-order-lower-description">' . sprintf(
1353                              /* translators: %s: Meta box title. */
1354                              __( 'Move %s box down' ),
1355                              $widget_title
1356                          ) . '</span>';
1357  
1358                          echo '<button type="button" class="handlediv" aria-expanded="true">';
1359                          echo '<span class="screen-reader-text">' . sprintf(
1360                              /* translators: %s: Meta box title. */
1361                              __( 'Toggle panel: %s' ),
1362                              $widget_title
1363                          ) . '</span>';
1364                          echo '<span class="toggle-indicator" aria-hidden="true"></span>';
1365                          echo '</button>';
1366  
1367                          echo '</div>';
1368                      }
1369                      echo '</div>';
1370  
1371                      echo '<div class="inside">' . "\n";
1372  
1373                      if ( WP_DEBUG && ! $block_compatible && 'edit' === $screen->parent_base && ! $screen->is_block_editor() && ! isset( $_GET['meta-box-loader'] ) ) {
1374                          $plugin = _get_plugin_from_callback( $box['callback'] );
1375                          if ( $plugin ) {
1376                              ?>
1377                              <div class="error inline">
1378                                  <p>
1379                                      <?php
1380                                          /* translators: %s: The name of the plugin that generated this meta box. */
1381                                          printf( __( "This meta box, from the %s plugin, isn't compatible with the block editor." ), "<strong>{$plugin['Name']}</strong>" );
1382                                      ?>
1383                                  </p>
1384                              </div>
1385                              <?php
1386                          }
1387                      }
1388  
1389                      call_user_func( $box['callback'], $object, $box );
1390                      echo "</div>\n";
1391                      echo "</div>\n";
1392                  }
1393              }
1394          }
1395      }
1396  
1397      echo '</div>';
1398  
1399      return $i;
1400  
1401  }
1402  
1403  /**
1404   * Removes a meta box from one or more screens.
1405   *
1406   * @since 2.6.0
1407   * @since 4.4.0 The `$screen` parameter now accepts an array of screen IDs.
1408   *
1409   * @global array $wp_meta_boxes
1410   *
1411   * @param string                 $id      Meta box ID (used in the 'id' attribute for the meta box).
1412   * @param string|array|WP_Screen $screen  The screen or screens on which the meta box is shown (such as a
1413   *                                        post type, 'link', or 'comment'). Accepts a single screen ID,
1414   *                                        WP_Screen object, or array of screen IDs.
1415   * @param string                 $context The context within the screen where the box is set to display.
1416   *                                        Contexts vary from screen to screen. Post edit screen contexts
1417   *                                        include 'normal', 'side', and 'advanced'. Comments screen contexts
1418   *                                        include 'normal' and 'side'. Menus meta boxes (accordion sections)
1419   *                                        all use the 'side' context.
1420   */
1421  function remove_meta_box( $id, $screen, $context ) {
1422      global $wp_meta_boxes;
1423  
1424      if ( empty( $screen ) ) {
1425          $screen = get_current_screen();
1426      } elseif ( is_string( $screen ) ) {
1427          $screen = convert_to_screen( $screen );
1428      } elseif ( is_array( $screen ) ) {
1429          foreach ( $screen as $single_screen ) {
1430              remove_meta_box( $id, $single_screen, $context );
1431          }
1432      }
1433  
1434      if ( ! isset( $screen->id ) ) {
1435          return;
1436      }
1437  
1438      $page = $screen->id;
1439  
1440      if ( ! isset( $wp_meta_boxes ) ) {
1441          $wp_meta_boxes = array();
1442      }
1443      if ( ! isset( $wp_meta_boxes[ $page ] ) ) {
1444          $wp_meta_boxes[ $page ] = array();
1445      }
1446      if ( ! isset( $wp_meta_boxes[ $page ][ $context ] ) ) {
1447          $wp_meta_boxes[ $page ][ $context ] = array();
1448      }
1449  
1450      foreach ( array( 'high', 'core', 'default', 'low' ) as $priority ) {
1451          $wp_meta_boxes[ $page ][ $context ][ $priority ][ $id ] = false;
1452      }
1453  }
1454  
1455  /**
1456   * Meta Box Accordion Template Function.
1457   *
1458   * Largely made up of abstracted code from do_meta_boxes(), this
1459   * function serves to build meta boxes as list items for display as
1460   * a collapsible accordion.
1461   *
1462   * @since 3.6.0
1463   *
1464   * @uses global $wp_meta_boxes Used to retrieve registered meta boxes.
1465   *
1466   * @param string|object $screen  The screen identifier.
1467   * @param string        $context The screen context for which to display accordion sections.
1468   * @param mixed         $object  Gets passed to the section callback function as the first parameter.
1469   * @return int Number of meta boxes as accordion sections.
1470   */
1471  function do_accordion_sections( $screen, $context, $object ) {
1472      global $wp_meta_boxes;
1473  
1474      wp_enqueue_script( 'accordion' );
1475  
1476      if ( empty( $screen ) ) {
1477          $screen = get_current_screen();
1478      } elseif ( is_string( $screen ) ) {
1479          $screen = convert_to_screen( $screen );
1480      }
1481  
1482      $page = $screen->id;
1483  
1484      $hidden = get_hidden_meta_boxes( $screen );
1485      ?>
1486      <div id="side-sortables" class="accordion-container">
1487          <ul class="outer-border">
1488      <?php
1489      $i          = 0;
1490      $first_open = false;
1491  
1492      if ( isset( $wp_meta_boxes[ $page ][ $context ] ) ) {
1493          foreach ( array( 'high', 'core', 'default', 'low' ) as $priority ) {
1494              if ( isset( $wp_meta_boxes[ $page ][ $context ][ $priority ] ) ) {
1495                  foreach ( $wp_meta_boxes[ $page ][ $context ][ $priority ] as $box ) {
1496                      if ( false === $box || ! $box['title'] ) {
1497                          continue;
1498                      }
1499  
1500                      $i++;
1501                      $hidden_class = in_array( $box['id'], $hidden, true ) ? 'hide-if-js' : '';
1502  
1503                      $open_class = '';
1504                      if ( ! $first_open && empty( $hidden_class ) ) {
1505                          $first_open = true;
1506                          $open_class = 'open';
1507                      }
1508                      ?>
1509                      <li class="control-section accordion-section <?php echo $hidden_class; ?> <?php echo $open_class; ?> <?php echo esc_attr( $box['id'] ); ?>" id="<?php echo esc_attr( $box['id'] ); ?>">
1510                          <h3 class="accordion-section-title hndle" tabindex="0">
1511                              <?php echo esc_html( $box['title'] ); ?>
1512                              <span class="screen-reader-text"><?php _e( 'Press return or enter to open this section' ); ?></span>
1513                          </h3>
1514                          <div class="accordion-section-content <?php postbox_classes( $box['id'], $page ); ?>">
1515                              <div class="inside">
1516                                  <?php call_user_func( $box['callback'], $object, $box ); ?>
1517                              </div><!-- .inside -->
1518                          </div><!-- .accordion-section-content -->
1519                      </li><!-- .accordion-section -->
1520                      <?php
1521                  }
1522              }
1523          }
1524      }
1525      ?>
1526          </ul><!-- .outer-border -->
1527      </div><!-- .accordion-container -->
1528      <?php
1529      return $i;
1530  }
1531  
1532  /**
1533   * Add a new section to a settings page.
1534   *
1535   * Part of the Settings API. Use this to define new settings sections for an admin page.
1536   * Show settings sections in your admin page callback function with do_settings_sections().
1537   * Add settings fields to your section with add_settings_field().
1538   *
1539   * The $callback argument should be the name of a function that echoes out any
1540   * content you want to show at the top of the settings section before the actual
1541   * fields. It can output nothing if you want.
1542   *
1543   * @since 2.7.0
1544   *
1545   * @global array $wp_settings_sections Storage array of all settings sections added to admin pages.
1546   *
1547   * @param string   $id       Slug-name to identify the section. Used in the 'id' attribute of tags.
1548   * @param string   $title    Formatted title of the section. Shown as the heading for the section.
1549   * @param callable $callback Function that echos out any content at the top of the section (between heading and fields).
1550   * @param string   $page     The slug-name of the settings page on which to show the section. Built-in pages include
1551   *                           'general', 'reading', 'writing', 'discussion', 'media', etc. Create your own using
1552   *                           add_options_page();
1553   */
1554  function add_settings_section( $id, $title, $callback, $page ) {
1555      global $wp_settings_sections;
1556  
1557      if ( 'misc' === $page ) {
1558          _deprecated_argument(
1559              __FUNCTION__,
1560              '3.0.0',
1561              sprintf(
1562                  /* translators: %s: misc */
1563                  __( 'The "%s" options group has been removed. Use another settings group.' ),
1564                  'misc'
1565              )
1566          );
1567          $page = 'general';
1568      }
1569  
1570      if ( 'privacy' === $page ) {
1571          _deprecated_argument(
1572              __FUNCTION__,
1573              '3.5.0',
1574              sprintf(
1575                  /* translators: %s: privacy */
1576                  __( 'The "%s" options group has been removed. Use another settings group.' ),
1577                  'privacy'
1578              )
1579          );
1580          $page = 'reading';
1581      }
1582  
1583      $wp_settings_sections[ $page ][ $id ] = array(
1584          'id'       => $id,
1585          'title'    => $title,
1586          'callback' => $callback,
1587      );
1588  }
1589  
1590  /**
1591   * Add a new field to a section of a settings page.
1592   *
1593   * Part of the Settings API. Use this to define a settings field that will show
1594   * as part of a settings section inside a settings page. The fields are shown using
1595   * do_settings_fields() in do_settings_sections().
1596   *
1597   * The $callback argument should be the name of a function that echoes out the
1598   * HTML input tags for this setting field. Use get_option() to retrieve existing
1599   * values to show.
1600   *
1601   * @since 2.7.0
1602   * @since 4.2.0 The `$class` argument was added.
1603   *
1604   * @global array $wp_settings_fields Storage array of settings fields and info about their pages/sections.
1605   *
1606   * @param string   $id       Slug-name to identify the field. Used in the 'id' attribute of tags.
1607   * @param string   $title    Formatted title of the field. Shown as the label for the field
1608   *                           during output.
1609   * @param callable $callback Function that fills the field with the desired form inputs. The
1610   *                           function should echo its output.
1611   * @param string   $page     The slug-name of the settings page on which to show the section
1612   *                           (general, reading, writing, ...).
1613   * @param string   $section  Optional. The slug-name of the section of the settings page
1614   *                           in which to show the box. Default 'default'.
1615   * @param array    $args {
1616   *     Optional. Extra arguments used when outputting the field.
1617   *
1618   *     @type string $label_for When supplied, the setting title will be wrapped
1619   *                             in a `<label>` element, its `for` attribute populated
1620   *                             with this value.
1621   *     @type string $class     CSS Class to be added to the `<tr>` element when the
1622   *                             field is output.
1623   * }
1624   */
1625  function add_settings_field( $id, $title, $callback, $page, $section = 'default', $args = array() ) {
1626      global $wp_settings_fields;
1627  
1628      if ( 'misc' === $page ) {
1629          _deprecated_argument(
1630              __FUNCTION__,
1631              '3.0.0',
1632              sprintf(
1633                  /* translators: %s: misc */
1634                  __( 'The "%s" options group has been removed. Use another settings group.' ),
1635                  'misc'
1636              )
1637          );
1638          $page = 'general';
1639      }
1640  
1641      if ( 'privacy' === $page ) {
1642          _deprecated_argument(
1643              __FUNCTION__,
1644              '3.5.0',
1645              sprintf(
1646                  /* translators: %s: privacy */
1647                  __( 'The "%s" options group has been removed. Use another settings group.' ),
1648                  'privacy'
1649              )
1650          );
1651          $page = 'reading';
1652      }
1653  
1654      $wp_settings_fields[ $page ][ $section ][ $id ] = array(
1655          'id'       => $id,
1656          'title'    => $title,
1657          'callback' => $callback,
1658          'args'     => $args,
1659      );
1660  }
1661  
1662  /**
1663   * Prints out all settings sections added to a particular settings page
1664   *
1665   * Part of the Settings API. Use this in a settings page callback function
1666   * to output all the sections and fields that were added to that $page with
1667   * add_settings_section() and add_settings_field()
1668   *
1669   * @global array $wp_settings_sections Storage array of all settings sections added to admin pages.
1670   * @global array $wp_settings_fields Storage array of settings fields and info about their pages/sections.
1671   * @since 2.7.0
1672   *
1673   * @param string $page The slug name of the page whose settings sections you want to output.
1674   */
1675  function do_settings_sections( $page ) {
1676      global $wp_settings_sections, $wp_settings_fields;
1677  
1678      if ( ! isset( $wp_settings_sections[ $page ] ) ) {
1679          return;
1680      }
1681  
1682      foreach ( (array) $wp_settings_sections[ $page ] as $section ) {
1683          if ( $section['title'] ) {
1684              echo "<h2>{$section['title']}</h2>\n";
1685          }
1686  
1687          if ( $section['callback'] ) {
1688              call_user_func( $section['callback'], $section );
1689          }
1690  
1691          if ( ! isset( $wp_settings_fields ) || ! isset( $wp_settings_fields[ $page ] ) || ! isset( $wp_settings_fields[ $page ][ $section['id'] ] ) ) {
1692              continue;
1693          }
1694          echo '<table class="form-table" role="presentation">';
1695          do_settings_fields( $page, $section['id'] );
1696          echo '</table>';
1697      }
1698  }
1699  
1700  /**
1701   * Print out the settings fields for a particular settings section.
1702   *
1703   * Part of the Settings API. Use this in a settings page to output
1704   * a specific section. Should normally be called by do_settings_sections()
1705   * rather than directly.
1706   *
1707   * @global array $wp_settings_fields Storage array of settings fields and their pages/sections.
1708   *
1709   * @since 2.7.0
1710   *
1711   * @param string $page Slug title of the admin page whose settings fields you want to show.
1712   * @param string $section Slug title of the settings section whose fields you want to show.
1713   */
1714  function do_settings_fields( $page, $section ) {
1715      global $wp_settings_fields;
1716  
1717      if ( ! isset( $wp_settings_fields[ $page ][ $section ] ) ) {
1718          return;
1719      }
1720  
1721      foreach ( (array) $wp_settings_fields[ $page ][ $section ] as $field ) {
1722          $class = '';
1723  
1724          if ( ! empty( $field['args']['class'] ) ) {
1725              $class = ' class="' . esc_attr( $field['args']['class'] ) . '"';
1726          }
1727  
1728          echo "<tr{$class}>";
1729  
1730          if ( ! empty( $field['args']['label_for'] ) ) {
1731              echo '<th scope="row"><label for="' . esc_attr( $field['args']['label_for'] ) . '">' . $field['title'] . '</label></th>';
1732          } else {
1733              echo '<th scope="row">' . $field['title'] . '</th>';
1734          }
1735  
1736          echo '<td>';
1737          call_user_func( $field['callback'], $field['args'] );
1738          echo '</td>';
1739          echo '</tr>';
1740      }
1741  }
1742  
1743  /**
1744   * Register a settings error to be displayed to the user.
1745   *
1746   * Part of the Settings API. Use this to show messages to users about settings validation
1747   * problems, missing settings or anything else.
1748   *
1749   * Settings errors should be added inside the $sanitize_callback function defined in
1750   * register_setting() for a given setting to give feedback about the submission.
1751   *
1752   * By default messages will show immediately after the submission that generated the error.
1753   * Additional calls to settings_errors() can be used to show errors even when the settings
1754   * page is first accessed.
1755   *
1756   * @since 3.0.0
1757   * @since 5.3.0 Added `warning` and `info` as possible values for `$type`.
1758   *
1759   * @global array $wp_settings_errors Storage array of errors registered during this pageload
1760   *
1761   * @param string $setting Slug title of the setting to which this error applies.
1762   * @param string $code    Slug-name to identify the error. Used as part of 'id' attribute in HTML output.
1763   * @param string $message The formatted message text to display to the user (will be shown inside styled
1764   *                        `<div>` and `<p>` tags).
1765   * @param string $type    Optional. Message type, controls HTML class. Possible values include 'error',
1766   *                        'success', 'warning', 'info'. Default 'error'.
1767   */
1768  function add_settings_error( $setting, $code, $message, $type = 'error' ) {
1769      global $wp_settings_errors;
1770  
1771      $wp_settings_errors[] = array(
1772          'setting' => $setting,
1773          'code'    => $code,
1774          'message' => $message,
1775          'type'    => $type,
1776      );
1777  }
1778  
1779  /**
1780   * Fetch settings errors registered by add_settings_error().
1781   *
1782   * Checks the $wp_settings_errors array for any errors declared during the current
1783   * pageload and returns them.
1784   *
1785   * If changes were just submitted ($_GET['settings-updated']) and settings errors were saved
1786   * to the 'settings_errors' transient then those errors will be returned instead. This
1787   * is used to pass errors back across pageloads.
1788   *
1789   * Use the $sanitize argument to manually re-sanitize the option before returning errors.
1790   * This is useful if you have errors or notices you want to show even when the user
1791   * hasn't submitted data (i.e. when they first load an options page, or in the {@see 'admin_notices'}
1792   * action hook).
1793   *
1794   * @since 3.0.0
1795   *
1796   * @global array $wp_settings_errors Storage array of errors registered during this pageload
1797   *
1798   * @param string $setting  Optional. Slug title of a specific setting whose errors you want.
1799   * @param bool   $sanitize Optional. Whether to re-sanitize the setting value before returning errors.
1800   * @return array {
1801   *     Array of settings errors.
1802   *
1803   *     @type string $setting Slug title of the setting to which this error applies.
1804   *     @type string $code    Slug-name to identify the error. Used as part of 'id' attribute in HTML output.
1805   *     @type string $message The formatted message text to display to the user (will be shown inside styled
1806   *                           `<div>` and `<p>` tags).
1807   *     @type string $type    Optional. Message type, controls HTML class. Possible values include 'error',
1808   *                           'success', 'warning', 'info'. Default 'error'.
1809   * }
1810   */
1811  function get_settings_errors( $setting = '', $sanitize = false ) {
1812      global $wp_settings_errors;
1813  
1814      /*
1815       * If $sanitize is true, manually re-run the sanitization for this option
1816       * This allows the $sanitize_callback from register_setting() to run, adding
1817       * any settings errors you want to show by default.
1818       */
1819      if ( $sanitize ) {
1820          sanitize_option( $setting, get_option( $setting ) );
1821      }
1822  
1823      // If settings were passed back from options.php then use them.
1824      if ( isset( $_GET['settings-updated'] ) && $_GET['settings-updated'] && get_transient( 'settings_errors' ) ) {
1825          $wp_settings_errors = array_merge( (array) $wp_settings_errors, get_transient( 'settings_errors' ) );
1826          delete_transient( 'settings_errors' );
1827      }
1828  
1829      // Check global in case errors have been added on this pageload.
1830      if ( empty( $wp_settings_errors ) ) {
1831          return array();
1832      }
1833  
1834      // Filter the results to those of a specific setting if one was set.
1835      if ( $setting ) {
1836          $setting_errors = array();
1837  
1838          foreach ( (array) $wp_settings_errors as $key => $details ) {
1839              if ( $setting === $details['setting'] ) {
1840                  $setting_errors[] = $wp_settings_errors[ $key ];
1841              }
1842          }
1843  
1844          return $setting_errors;
1845      }
1846  
1847      return $wp_settings_errors;
1848  }
1849  
1850  /**
1851   * Display settings errors registered by add_settings_error().
1852   *
1853   * Part of the Settings API. Outputs a div for each error retrieved by
1854   * get_settings_errors().
1855   *
1856   * This is called automatically after a settings page based on the
1857   * Settings API is submitted. Errors should be added during the validation
1858   * callback function for a setting defined in register_setting().
1859   *
1860   * The $sanitize option is passed into get_settings_errors() and will
1861   * re-run the setting sanitization
1862   * on its current value.
1863   *
1864   * The $hide_on_update option will cause errors to only show when the settings
1865   * page is first loaded. if the user has already saved new values it will be
1866   * hidden to avoid repeating messages already shown in the default error
1867   * reporting after submission. This is useful to show general errors like
1868   * missing settings when the user arrives at the settings page.
1869   *
1870   * @since 3.0.0
1871   * @since 5.3.0 Legacy `error` and `updated` CSS classes are mapped to
1872   *              `notice-error` and `notice-success`.
1873   *
1874   * @param string $setting        Optional slug title of a specific setting whose errors you want.
1875   * @param bool   $sanitize       Whether to re-sanitize the setting value before returning errors.
1876   * @param bool   $hide_on_update If set to true errors will not be shown if the settings page has
1877   *                               already been submitted.
1878   */
1879  function settings_errors( $setting = '', $sanitize = false, $hide_on_update = false ) {
1880  
1881      if ( $hide_on_update && ! empty( $_GET['settings-updated'] ) ) {
1882          return;
1883      }
1884  
1885      $settings_errors = get_settings_errors( $setting, $sanitize );
1886  
1887      if ( empty( $settings_errors ) ) {
1888          return;
1889      }
1890  
1891      $output = '';
1892  
1893      foreach ( $settings_errors as $key => $details ) {
1894          if ( 'updated' === $details['type'] ) {
1895              $details['type'] = 'success';
1896          }
1897  
1898          if ( in_array( $details['type'], array( 'error', 'success', 'warning', 'info' ), true ) ) {
1899              $details['type'] = 'notice-' . $details['type'];
1900          }
1901  
1902          $css_id    = sprintf(
1903              'setting-error-%s',
1904              esc_attr( $details['code'] )
1905          );
1906          $css_class = sprintf(
1907              'notice %s settings-error is-dismissible',
1908              esc_attr( $details['type'] )
1909          );
1910  
1911          $output .= "<div id='$css_id' class='$css_class'> \n";
1912          $output .= "<p><strong>{$details['message']}</strong></p>";
1913          $output .= "</div> \n";
1914      }
1915  
1916      echo $output;
1917  }
1918  
1919  /**
1920   * Outputs the modal window used for attaching media to posts or pages in the media-listing screen.
1921   *
1922   * @since 2.7.0
1923   *
1924   * @param string $found_action
1925   */
1926  function find_posts_div( $found_action = '' ) {
1927      ?>
1928      <div id="find-posts" class="find-box" style="display: none;">
1929          <div id="find-posts-head" class="find-box-head">
1930              <?php _e( 'Attach to existing content' ); ?>
1931              <button type="button" id="find-posts-close"><span class="screen-reader-text"><?php _e( 'Close media attachment panel' ); ?></span></button>
1932          </div>
1933          <div class="find-box-inside">
1934              <div class="find-box-search">
1935                  <?php if ( $found_action ) { ?>
1936                      <input type="hidden" name="found_action" value="<?php echo esc_attr( $found_action ); ?>" />
1937                  <?php } ?>
1938                  <input type="hidden" name="affected" id="affected" value="" />
1939                  <?php wp_nonce_field( 'find-posts', '_ajax_nonce', false ); ?>
1940                  <label class="screen-reader-text" for="find-posts-input"><?php _e( 'Search' ); ?></label>
1941                  <input type="text" id="find-posts-input" name="ps" value="" />
1942                  <span class="spinner"></span>
1943                  <input type="button" id="find-posts-search" value="<?php esc_attr_e( 'Search' ); ?>" class="button" />
1944                  <div class="clear"></div>
1945              </div>
1946              <div id="find-posts-response"></div>
1947          </div>
1948          <div class="find-box-buttons">
1949              <?php submit_button( __( 'Select' ), 'primary alignright', 'find-posts-submit', false ); ?>
1950              <div class="clear"></div>
1951          </div>
1952      </div>
1953      <?php
1954  }
1955  
1956  /**
1957   * Displays the post password.
1958   *
1959   * The password is passed through esc_attr() to ensure that it is safe for placing in an HTML attribute.
1960   *
1961   * @since 2.7.0
1962   */
1963  function the_post_password() {
1964      $post = get_post();
1965      if ( isset( $post->post_password ) ) {
1966          echo esc_attr( $post->post_password );
1967      }
1968  }
1969  
1970  /**
1971   * Get the post title.
1972   *
1973   * The post title is fetched and if it is blank then a default string is
1974   * returned.
1975   *
1976   * @since 2.7.0
1977   *
1978   * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
1979   * @return string The post title if set.
1980   */
1981  function _draft_or_post_title( $post = 0 ) {
1982      $title = get_the_title( $post );
1983      if ( empty( $title ) ) {
1984          $title = __( '(no title)' );
1985      }
1986      return esc_html( $title );
1987  }
1988  
1989  /**
1990   * Displays the search query.
1991   *
1992   * A simple wrapper to display the "s" parameter in a `GET` URI. This function
1993   * should only be used when the_search_query() cannot.
1994   *
1995   * @since 2.7.0
1996   */
1997  function _admin_search_query() {
1998      echo isset( $_REQUEST['s'] ) ? esc_attr( wp_unslash( $_REQUEST['s'] ) ) : '';
1999  }
2000  
2001  /**
2002   * Generic Iframe header for use with Thickbox
2003   *
2004   * @since 2.7.0
2005   *
2006   * @global string    $hook_suffix
2007   * @global string    $admin_body_class
2008   * @global WP_Locale $wp_locale        WordPress date and time locale object.
2009   *
2010   * @param string $title      Optional. Title of the Iframe page. Default empty.
2011   * @param bool   $deprecated Not used.
2012   */
2013  function iframe_header( $title = '', $deprecated = false ) {
2014      show_admin_bar( false );
2015      global $hook_suffix, $admin_body_class, $wp_locale;
2016      $admin_body_class = preg_replace( '/[^a-z0-9_-]+/i', '-', $hook_suffix );
2017  
2018      $current_screen = get_current_screen();
2019  
2020      header( 'Content-Type: ' . get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' ) );
2021      _wp_admin_html_begin();
2022      ?>
2023  <title><?php bloginfo( 'name' ); ?> &rsaquo; <?php echo $title; ?> &#8212; <?php _e( 'WordPress' ); ?></title>
2024      <?php
2025      wp_enqueue_style( 'colors' );
2026      ?>
2027  <script type="text/javascript">
2028  addLoadEvent = function(func){if(typeof jQuery!=='undefined')jQuery(document).ready(func);else if(typeof wpOnload!=='function'){wpOnload=func;}else{var oldonload=wpOnload;wpOnload=function(){oldonload();func();}}};
2029  function tb_close(){var win=window.dialogArguments||opener||parent||top;win.tb_remove();}
2030  var ajaxurl = '<?php echo esc_js( admin_url( 'admin-ajax.php', 'relative' ) ); ?>',
2031      pagenow = '<?php echo esc_js( $current_screen->id ); ?>',
2032      typenow = '<?php echo esc_js( $current_screen->post_type ); ?>',
2033      adminpage = '<?php echo esc_js( $admin_body_class ); ?>',
2034      thousandsSeparator = '<?php echo esc_js( $wp_locale->number_format['thousands_sep'] ); ?>',
2035      decimalPoint = '<?php echo esc_js( $wp_locale->number_format['decimal_point'] ); ?>',
2036      isRtl = <?php echo (int) is_rtl(); ?>;
2037  </script>
2038      <?php
2039      /** This action is documented in wp-admin/admin-header.php */
2040      do_action( 'admin_enqueue_scripts', $hook_suffix );
2041  
2042      /** This action is documented in wp-admin/admin-header.php */
2043      do_action( "admin_print_styles-{$hook_suffix}" );  // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
2044  
2045      /** This action is documented in wp-admin/admin-header.php */
2046      do_action( 'admin_print_styles' );
2047  
2048      /** This action is documented in wp-admin/admin-header.php */
2049      do_action( "admin_print_scripts-{$hook_suffix}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
2050  
2051      /** This action is documented in wp-admin/admin-header.php */
2052      do_action( 'admin_print_scripts' );
2053  
2054      /** This action is documented in wp-admin/admin-header.php */
2055      do_action( "admin_head-{$hook_suffix}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
2056  
2057      /** This action is documented in wp-admin/admin-header.php */
2058      do_action( 'admin_head' );
2059  
2060      $admin_body_class .= ' locale-' . sanitize_html_class( strtolower( str_replace( '_', '-', get_user_locale() ) ) );
2061  
2062      if ( is_rtl() ) {
2063          $admin_body_class .= ' rtl';
2064      }
2065  
2066      ?>
2067  </head>
2068      <?php
2069      /**
2070       * @global string $body_id
2071       */
2072      $admin_body_id = isset( $GLOBALS['body_id'] ) ? 'id="' . $GLOBALS['body_id'] . '" ' : '';
2073  
2074      /** This filter is documented in wp-admin/admin-header.php */
2075      $admin_body_classes = apply_filters( 'admin_body_class', '' );
2076      $admin_body_classes = ltrim( $admin_body_classes . ' ' . $admin_body_class );
2077      ?>
2078  <body <?php echo $admin_body_id; ?>class="wp-admin wp-core-ui no-js iframe <?php echo $admin_body_classes; ?>">
2079  <script type="text/javascript">
2080  (function(){
2081  var c = document.body.className;
2082  c = c.replace(/no-js/, 'js');
2083  document.body.className = c;
2084  })();
2085  </script>
2086      <?php
2087  }
2088  
2089  /**
2090   * Generic Iframe footer for use with Thickbox
2091   *
2092   * @since 2.7.0
2093   */
2094  function iframe_footer() {
2095      /*
2096       * We're going to hide any footer output on iFrame pages,
2097       * but run the hooks anyway since they output JavaScript
2098       * or other needed content.
2099       */
2100  
2101      /**
2102       * @global string $hook_suffix
2103       */
2104      global $hook_suffix;
2105      ?>
2106      <div class="hidden">
2107      <?php
2108      /** This action is documented in wp-admin/admin-footer.php */
2109      do_action( 'admin_footer', $hook_suffix );
2110  
2111      /** This action is documented in wp-admin/admin-footer.php */
2112      do_action( "admin_print_footer_scripts-{$hook_suffix}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
2113  
2114      /** This action is documented in wp-admin/admin-footer.php */
2115      do_action( 'admin_print_footer_scripts' );
2116      ?>
2117      </div>
2118  <script type="text/javascript">if(typeof wpOnload==='function')wpOnload();</script>
2119  </body>
2120  </html>
2121      <?php
2122  }
2123  
2124  /**
2125   * Function to echo or return the post states as HTML.
2126   *
2127   * @since 2.7.0
2128   * @since 5.3.0 Added the `$echo` parameter and a return value.
2129   *
2130   * @see get_post_states()
2131   *
2132   * @param WP_Post $post The post to retrieve states for.
2133   * @param bool    $echo Optional. Whether to echo the post states as an HTML string. Default true.
2134   * @return string Post states string.
2135   */
2136  function _post_states( $post, $echo = true ) {
2137      $post_states        = get_post_states( $post );
2138      $post_states_string = '';
2139  
2140      if ( ! empty( $post_states ) ) {
2141          $state_count = count( $post_states );
2142          $i           = 0;
2143  
2144          $post_states_string .= ' &mdash; ';
2145  
2146          foreach ( $post_states as $state ) {
2147              $sep = ( ++$i === $state_count ) ? '' : ', ';
2148  
2149              $post_states_string .= "<span class='post-state'>$state$sep</span>";
2150          }
2151      }
2152  
2153      if ( $echo ) {
2154          echo $post_states_string;
2155      }
2156  
2157      return $post_states_string;
2158  }
2159  
2160  /**
2161   * Retrieves an array of post states from a post.
2162   *
2163   * @since 5.3.0
2164   *
2165   * @param WP_Post $post The post to retrieve states for.
2166   * @return string[] Array of post state labels keyed by their state.
2167   */
2168  function get_post_states( $post ) {
2169      $post_states = array();
2170  
2171      if ( isset( $_REQUEST['post_status'] ) ) {
2172          $post_status = $_REQUEST['post_status'];
2173      } else {
2174          $post_status = '';
2175      }
2176  
2177      if ( ! empty( $post->post_password ) ) {
2178          $post_states['protected'] = _x( 'Password protected', 'post status' );
2179      }
2180  
2181      if ( 'private' === $post->post_status && 'private' !== $post_status ) {
2182          $post_states['private'] = _x( 'Private', 'post status' );
2183      }
2184  
2185      if ( 'draft' === $post->post_status ) {
2186          if ( get_post_meta( $post->ID, '_customize_changeset_uuid', true ) ) {
2187              $post_states[] = __( 'Customization Draft' );
2188          } elseif ( 'draft' !== $post_status ) {
2189              $post_states['draft'] = _x( 'Draft', 'post status' );
2190          }
2191      } elseif ( 'trash' === $post->post_status && get_post_meta( $post->ID, '_customize_changeset_uuid', true ) ) {
2192          $post_states[] = _x( 'Customization Draft', 'post status' );
2193      }
2194  
2195      if ( 'pending' === $post->post_status && 'pending' !== $post_status ) {
2196          $post_states['pending'] = _x( 'Pending', 'post status' );
2197      }
2198  
2199      if ( is_sticky( $post->ID ) ) {
2200          $post_states['sticky'] = _x( 'Sticky', 'post status' );
2201      }
2202  
2203      if ( 'future' === $post->post_status ) {
2204          $post_states['scheduled'] = _x( 'Scheduled', 'post status' );
2205      }
2206  
2207      if ( 'page' === get_option( 'show_on_front' ) ) {
2208          if ( (int) get_option( 'page_on_front' ) === $post->ID ) {
2209              $post_states['page_on_front'] = _x( 'Front Page', 'page label' );
2210          }
2211  
2212          if ( (int) get_option( 'page_for_posts' ) === $post->ID ) {
2213              $post_states['page_for_posts'] = _x( 'Posts Page', 'page label' );
2214          }
2215      }
2216  
2217      if ( (int) get_option( 'wp_page_for_privacy_policy' ) === $post->ID ) {
2218          $post_states['page_for_privacy_policy'] = _x( 'Privacy Policy Page', 'page label' );
2219      }
2220  
2221      /**
2222       * Filters the default post display states used in the posts list table.
2223       *
2224       * @since 2.8.0
2225       * @since 3.6.0 Added the `$post` parameter.
2226       * @since 5.5.0 Also applied in the Customizer context. If any admin functions
2227       *              are used within the filter, their existence should be checked
2228       *              with `function_exists()` before being used.
2229       *
2230       * @param string[] $post_states An array of post display states.
2231       * @param WP_Post  $post        The current post object.
2232       */
2233      return apply_filters( 'display_post_states', $post_states, $post );
2234  }
2235  
2236  /**
2237   * Outputs the attachment media states as HTML.
2238   *
2239   * @since 3.2.0
2240   * @since 5.6.0 Added the `$echo` parameter and a return value.
2241   *
2242   * @param WP_Post $post The attachment post to retrieve states for.
2243   * @param bool    $echo Optional. Whether to echo the post states as an HTML string. Default true.
2244   * @return string Media states string.
2245   */
2246  function _media_states( $post, $echo = true ) {
2247      $media_states        = get_media_states( $post );
2248      $media_states_string = '';
2249  
2250      if ( ! empty( $media_states ) ) {
2251          $state_count = count( $media_states );
2252          $i           = 0;
2253  
2254          $media_states_string .= ' &mdash; ';
2255  
2256          foreach ( $media_states as $state ) {
2257              $sep = ( ++$i === $state_count ) ? '' : ', ';
2258  
2259              $media_states_string .= "<span class='post-state'>$state$sep</span>";
2260          }
2261      }
2262  
2263      if ( $echo ) {
2264          echo $media_states_string;
2265      }
2266  
2267      return $media_states_string;
2268  }
2269  
2270  /**
2271   * Retrieves an array of media states from an attachment.
2272   *
2273   * @since 5.6.0
2274   *
2275   * @param WP_Post $post The attachment to retrieve states for.
2276   * @return string[] Array of media state labels keyed by their state.
2277   */
2278  function get_media_states( $post ) {
2279      static $header_images;
2280  
2281      $media_states = array();
2282      $stylesheet   = get_option( 'stylesheet' );
2283  
2284      if ( current_theme_supports( 'custom-header' ) ) {
2285          $meta_header = get_post_meta( $post->ID, '_wp_attachment_is_custom_header', true );
2286  
2287          if ( is_random_header_image() ) {
2288              if ( ! isset( $header_images ) ) {
2289                  $header_images = wp_list_pluck( get_uploaded_header_images(), 'attachment_id' );
2290              }
2291  
2292              if ( $meta_header === $stylesheet && in_array( $post->ID, $header_images, true ) ) {
2293                  $media_states[] = __( 'Header Image' );
2294              }
2295          } else {
2296              $header_image = get_header_image();
2297  
2298              // Display "Header Image" if the image was ever used as a header image.
2299              if ( ! empty( $meta_header ) && $meta_header === $stylesheet && wp_get_attachment_url( $post->ID ) !== $header_image ) {
2300                  $media_states[] = __( 'Header Image' );
2301              }
2302  
2303              // Display "Current Header Image" if the image is currently the header image.
2304              if ( $header_image && wp_get_attachment_url( $post->ID ) === $header_image ) {
2305                  $media_states[] = __( 'Current Header Image' );
2306              }
2307          }
2308  
2309          if ( get_theme_support( 'custom-header', 'video' ) && has_header_video() ) {
2310              $mods = get_theme_mods();
2311              if ( isset( $mods['header_video'] ) && $post->ID === $mods['header_video'] ) {
2312                  $media_states[] = __( 'Current Header Video' );
2313              }
2314          }
2315      }
2316  
2317      if ( current_theme_supports( 'custom-background' ) ) {
2318          $meta_background = get_post_meta( $post->ID, '_wp_attachment_is_custom_background', true );
2319  
2320          if ( ! empty( $meta_background ) && $meta_background === $stylesheet ) {
2321              $media_states[] = __( 'Background Image' );
2322  
2323              $background_image = get_background_image();
2324              if ( $background_image && wp_get_attachment_url( $post->ID ) === $background_image ) {
2325                  $media_states[] = __( 'Current Background Image' );
2326              }
2327          }
2328      }
2329  
2330      if ( (int) get_option( 'site_icon' ) === $post->ID ) {
2331          $media_states[] = __( 'Site Icon' );
2332      }
2333  
2334      if ( (int) get_theme_mod( 'custom_logo' ) === $post->ID ) {
2335          $media_states[] = __( 'Logo' );
2336      }
2337  
2338      /**
2339       * Filters the default media display states for items in the Media list table.
2340       *
2341       * @since 3.2.0
2342       * @since 4.8.0 Added the `$post` parameter.
2343       *
2344       * @param string[] $media_states An array of media states. Default 'Header Image',
2345       *                               'Background Image', 'Site Icon', 'Logo'.
2346       * @param WP_Post  $post         The current attachment object.
2347       */
2348       return apply_filters( 'display_media_states', $media_states, $post );
2349  }
2350  
2351  /**
2352   * Test support for compressing JavaScript from PHP
2353   *
2354   * Outputs JavaScript that tests if compression from PHP works as expected
2355   * and sets an option with the result. Has no effect when the current user
2356   * is not an administrator. To run the test again the option 'can_compress_scripts'
2357   * has to be deleted.
2358   *
2359   * @since 2.8.0
2360   */
2361  function compression_test() {
2362      ?>
2363      <script type="text/javascript">
2364      var compressionNonce = <?php echo wp_json_encode( wp_create_nonce( 'update_can_compress_scripts' ) ); ?>;
2365      var testCompression = {
2366          get : function(test) {
2367              var x;
2368              if ( window.XMLHttpRequest ) {
2369                  x = new XMLHttpRequest();
2370              } else {
2371                  try{x=new ActiveXObject('Msxml2.XMLHTTP');}catch(e){try{x=new ActiveXObject('Microsoft.XMLHTTP');}catch(e){};}
2372              }
2373  
2374              if (x) {
2375                  x.onreadystatechange = function() {
2376                      var r, h;
2377                      if ( x.readyState == 4 ) {
2378                          r = x.responseText.substr(0, 18);
2379                          h = x.getResponseHeader('Content-Encoding');
2380                          testCompression.check(r, h, test);
2381                      }
2382                  };
2383  
2384                  x.open('GET', ajaxurl + '?action=wp-compression-test&test='+test+'&_ajax_nonce='+compressionNonce+'&'+(new Date()).getTime(), true);
2385                  x.send('');
2386              }
2387          },
2388  
2389          check : function(r, h, test) {
2390              if ( ! r && ! test )
2391                  this.get(1);
2392  
2393              if ( 1 == test ) {
2394                  if ( h && ( h.match(/deflate/i) || h.match(/gzip/i) ) )
2395                      this.get('no');
2396                  else
2397                      this.get(2);
2398  
2399                  return;
2400              }
2401  
2402              if ( 2 == test ) {
2403                  if ( '"wpCompressionTest' === r )
2404                      this.get('yes');
2405                  else
2406                      this.get('no');
2407              }
2408          }
2409      };
2410      testCompression.check();
2411      </script>
2412      <?php
2413  }
2414  
2415  /**
2416   * Echoes a submit button, with provided text and appropriate class(es).
2417   *
2418   * @since 3.1.0
2419   *
2420   * @see get_submit_button()
2421   *
2422   * @param string       $text             The text of the button (defaults to 'Save Changes')
2423   * @param string       $type             Optional. The type and CSS class(es) of the button. Core values
2424   *                                       include 'primary', 'small', and 'large'. Default 'primary'.
2425   * @param string       $name             The HTML name of the submit button. Defaults to "submit". If no
2426   *                                       id attribute is given in $other_attributes below, $name will be
2427   *                                       used as the button's id.
2428   * @param bool         $wrap             True if the output button should be wrapped in a paragraph tag,
2429   *                                       false otherwise. Defaults to true.
2430   * @param array|string $other_attributes Other attributes that should be output with the button, mapping
2431   *                                       attributes to their values, such as setting tabindex to 1, etc.
2432   *                                       These key/value attribute pairs will be output as attribute="value",
2433   *                                       where attribute is the key. Other attributes can also be provided
2434   *                                       as a string such as 'tabindex="1"', though the array format is
2435   *                                       preferred. Default null.
2436   */
2437  function submit_button( $text = null, $type = 'primary', $name = 'submit', $wrap = true, $other_attributes = null ) {
2438      echo get_submit_button( $text, $type, $name, $wrap, $other_attributes );
2439  }
2440  
2441  /**
2442   * Returns a submit button, with provided text and appropriate class
2443   *
2444   * @since 3.1.0
2445   *
2446   * @param string       $text             Optional. The text of the button. Default 'Save Changes'.
2447   * @param string       $type             Optional. The type and CSS class(es) of the button. Core values
2448   *                                       include 'primary', 'small', and 'large'. Default 'primary large'.
2449   * @param string       $name             Optional. The HTML name of the submit button. Defaults to "submit".
2450   *                                       If no id attribute is given in $other_attributes below, `$name` will
2451   *                                       be used as the button's id. Default 'submit'.
2452   * @param bool         $wrap             Optional. True if the output button should be wrapped in a paragraph
2453   *                                       tag, false otherwise. Default true.
2454   * @param array|string $other_attributes Optional. Other attributes that should be output with the button,
2455   *                                       mapping attributes to their values, such as `array( 'tabindex' => '1' )`.
2456   *                                       These attributes will be output as `attribute="value"`, such as
2457   *                                       `tabindex="1"`. Other attributes can also be provided as a string such
2458   *                                       as `tabindex="1"`, though the array format is typically cleaner.
2459   *                                       Default empty.
2460   * @return string Submit button HTML.
2461   */
2462  function get_submit_button( $text = '', $type = 'primary large', $name = 'submit', $wrap = true, $other_attributes = '' ) {
2463      if ( ! is_array( $type ) ) {
2464          $type = explode( ' ', $type );
2465      }
2466  
2467      $button_shorthand = array( 'primary', 'small', 'large' );
2468      $classes          = array( 'button' );
2469  
2470      foreach ( $type as $t ) {
2471          if ( 'secondary' === $t || 'button-secondary' === $t ) {
2472              continue;
2473          }
2474  
2475          $classes[] = in_array( $t, $button_shorthand, true ) ? 'button-' . $t : $t;
2476      }
2477  
2478      // Remove empty items, remove duplicate items, and finally build a string.
2479      $class = implode( ' ', array_unique( array_filter( $classes ) ) );
2480  
2481      $text = $text ? $text : __( 'Save Changes' );
2482  
2483      // Default the id attribute to $name unless an id was specifically provided in $other_attributes.
2484      $id = $name;
2485      if ( is_array( $other_attributes ) && isset( $other_attributes['id'] ) ) {
2486          $id = $other_attributes['id'];
2487          unset( $other_attributes['id'] );
2488      }
2489  
2490      $attributes = '';
2491      if ( is_array( $other_attributes ) ) {
2492          foreach ( $other_attributes as $attribute => $value ) {
2493              $attributes .= $attribute . '="' . esc_attr( $value ) . '" '; // Trailing space is important.
2494          }
2495      } elseif ( ! empty( $other_attributes ) ) { // Attributes provided as a string.
2496          $attributes = $other_attributes;
2497      }
2498  
2499      // Don't output empty name and id attributes.
2500      $name_attr = $name ? ' name="' . esc_attr( $name ) . '"' : '';
2501      $id_attr   = $id ? ' id="' . esc_attr( $id ) . '"' : '';
2502  
2503      $button  = '<input type="submit"' . $name_attr . $id_attr . ' class="' . esc_attr( $class );
2504      $button .= '" value="' . esc_attr( $text ) . '" ' . $attributes . ' />';
2505  
2506      if ( $wrap ) {
2507          $button = '<p class="submit">' . $button . '</p>';
2508      }
2509  
2510      return $button;
2511  }
2512  
2513  /**
2514   * @global bool $is_IE
2515   */
2516  function _wp_admin_html_begin() {
2517      global $is_IE;
2518  
2519      $admin_html_class = ( is_admin_bar_showing() ) ? 'wp-toolbar' : '';
2520  
2521      if ( $is_IE ) {
2522          header( 'X-UA-Compatible: IE=edge' );
2523      }
2524  
2525      ?>
2526  <!DOCTYPE html>
2527  <html class="<?php echo $admin_html_class; ?>"
2528      <?php
2529      /**
2530       * Fires inside the HTML tag in the admin header.
2531       *
2532       * @since 2.2.0
2533       */
2534      do_action( 'admin_xml_ns' );
2535  
2536      language_attributes();
2537      ?>
2538  >
2539  <head>
2540  <meta http-equiv="Content-Type" content="<?php bloginfo( 'html_type' ); ?>; charset=<?php echo get_option( 'blog_charset' ); ?>" />
2541      <?php
2542  }
2543  
2544  /**
2545   * Convert a screen string to a screen object
2546   *
2547   * @since 3.0.0
2548   *
2549   * @param string $hook_name The hook name (also known as the hook suffix) used to determine the screen.
2550   * @return WP_Screen Screen object.
2551   */
2552  function convert_to_screen( $hook_name ) {
2553      if ( ! class_exists( 'WP_Screen' ) ) {
2554          _doing_it_wrong(
2555              'convert_to_screen(), add_meta_box()',
2556              sprintf(
2557                  /* translators: 1: wp-admin/includes/template.php, 2: add_meta_box(), 3: add_meta_boxes */
2558                  __( 'Likely direct inclusion of %1$s in order to use %2$s. This is very wrong. Hook the %2$s call into the %3$s action instead.' ),
2559                  '<code>wp-admin/includes/template.php</code>',
2560                  '<code>add_meta_box()</code>',
2561                  '<code>add_meta_boxes</code>'
2562              ),
2563              '3.3.0'
2564          );
2565          return (object) array(
2566              'id'   => '_invalid',
2567              'base' => '_are_belong_to_us',
2568          );
2569      }
2570  
2571      return WP_Screen::get( $hook_name );
2572  }
2573  
2574  /**
2575   * Output the HTML for restoring the post data from DOM storage
2576   *
2577   * @since 3.6.0
2578   * @access private
2579   */
2580  function _local_storage_notice() {
2581      ?>
2582      <div id="local-storage-notice" class="hidden notice is-dismissible">
2583      <p class="local-restore">
2584          <?php _e( 'The backup of this post in your browser is different from the version below.' ); ?>
2585          <button type="button" class="button restore-backup"><?php _e( 'Restore the backup' ); ?></button>
2586      </p>
2587      <p class="help">
2588          <?php _e( 'This will replace the current editor content with the last backup version. You can use undo and redo in the editor to get the old content back or to return to the restored version.' ); ?>
2589      </p>
2590      </div>
2591      <?php
2592  }
2593  
2594  /**
2595   * Output a HTML element with a star rating for a given rating.
2596   *
2597   * Outputs a HTML element with the star rating exposed on a 0..5 scale in
2598   * half star increments (ie. 1, 1.5, 2 stars). Optionally, if specified, the
2599   * number of ratings may also be displayed by passing the $number parameter.
2600   *
2601   * @since 3.8.0
2602   * @since 4.4.0 Introduced the `echo` parameter.
2603   *
2604   * @param array $args {
2605   *     Optional. Array of star ratings arguments.
2606   *
2607   *     @type int|float $rating The rating to display, expressed in either a 0.5 rating increment,
2608   *                             or percentage. Default 0.
2609   *     @type string    $type   Format that the $rating is in. Valid values are 'rating' (default),
2610   *                             or, 'percent'. Default 'rating'.
2611   *     @type int       $number The number of ratings that makes up this rating. Default 0.
2612   *     @type bool      $echo   Whether to echo the generated markup. False to return the markup instead
2613   *                             of echoing it. Default true.
2614   * }
2615   * @return string Star rating HTML.
2616   */
2617  function wp_star_rating( $args = array() ) {
2618      $defaults    = array(
2619          'rating' => 0,
2620          'type'   => 'rating',
2621          'number' => 0,
2622          'echo'   => true,
2623      );
2624      $parsed_args = wp_parse_args( $args, $defaults );
2625  
2626      // Non-English decimal places when the $rating is coming from a string.
2627      $rating = (float) str_replace( ',', '.', $parsed_args['rating'] );
2628  
2629      // Convert percentage to star rating, 0..5 in .5 increments.
2630      if ( 'percent' === $parsed_args['type'] ) {
2631          $rating = round( $rating / 10, 0 ) / 2;
2632      }
2633  
2634      // Calculate the number of each type of star needed.
2635      $full_stars  = floor( $rating );
2636      $half_stars  = ceil( $rating - $full_stars );
2637      $empty_stars = 5 - $full_stars - $half_stars;
2638  
2639      if ( $parsed_args['number'] ) {
2640          /* translators: 1: The rating, 2: The number of ratings. */
2641          $format = _n( '%1$s rating based on %2$s rating', '%1$s rating based on %2$s ratings', $parsed_args['number'] );
2642          $title  = sprintf( $format, number_format_i18n( $rating, 1 ), number_format_i18n( $parsed_args['number'] ) );
2643      } else {
2644          /* translators: %s: The rating. */
2645          $title = sprintf( __( '%s rating' ), number_format_i18n( $rating, 1 ) );
2646      }
2647  
2648      $output  = '<div class="star-rating">';
2649      $output .= '<span class="screen-reader-text">' . $title . '</span>';
2650      $output .= str_repeat( '<div class="star star-full" aria-hidden="true"></div>', $full_stars );
2651      $output .= str_repeat( '<div class="star star-half" aria-hidden="true"></div>', $half_stars );
2652      $output .= str_repeat( '<div class="star star-empty" aria-hidden="true"></div>', $empty_stars );
2653      $output .= '</div>';
2654  
2655      if ( $parsed_args['echo'] ) {
2656          echo $output;
2657      }
2658  
2659      return $output;
2660  }
2661  
2662  /**
2663   * Output a notice when editing the page for posts (internal use only).
2664   *
2665   * @ignore
2666   * @since 4.2.0
2667   */
2668  function _wp_posts_page_notice() {
2669      echo '<div class="notice notice-warning inline"><p>' . __( 'You are currently editing the page that shows your latest posts.' ) . '</p></div>';
2670  }