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/wp-includes/ -> class-wp-customize-manager.php (source)

   1  <?php
   2  /**
   3   * WordPress Customize Manager classes
   4   *
   5   * @package WordPress
   6   * @subpackage Customize
   7   * @since 3.4.0
   8   */
   9  
  10  /**
  11   * Customize Manager class.
  12   *
  13   * Bootstraps the Customize experience on the server-side.
  14   *
  15   * Sets up the theme-switching process if a theme other than the active one is
  16   * being previewed and customized.
  17   *
  18   * Serves as a factory for Customize Controls and Settings, and
  19   * instantiates default Customize Controls and Settings.
  20   *
  21   * @since 3.4.0
  22   */
  23  #[AllowDynamicProperties]
  24  final class WP_Customize_Manager {
  25      /**
  26       * An instance of the theme being previewed.
  27       *
  28       * @since 3.4.0
  29       * @var WP_Theme
  30       */
  31      protected $theme;
  32  
  33      /**
  34       * The directory name of the previously active theme (within the theme_root).
  35       *
  36       * @since 3.4.0
  37       * @var string
  38       */
  39      protected $original_stylesheet;
  40  
  41      /**
  42       * Whether this is a Customizer pageload.
  43       *
  44       * @since 3.4.0
  45       * @var bool
  46       */
  47      protected $previewing = false;
  48  
  49      /**
  50       * Methods and properties dealing with managing widgets in the Customizer.
  51       *
  52       * @since 3.9.0
  53       * @var WP_Customize_Widgets
  54       */
  55      public $widgets;
  56  
  57      /**
  58       * Methods and properties dealing with managing nav menus in the Customizer.
  59       *
  60       * @since 4.3.0
  61       * @var WP_Customize_Nav_Menus
  62       */
  63      public $nav_menus;
  64  
  65      /**
  66       * Methods and properties dealing with selective refresh in the Customizer preview.
  67       *
  68       * @since 4.5.0
  69       * @var WP_Customize_Selective_Refresh
  70       */
  71      public $selective_refresh;
  72  
  73      /**
  74       * Registered instances of WP_Customize_Setting.
  75       *
  76       * @since 3.4.0
  77       * @var array
  78       */
  79      protected $settings = array();
  80  
  81      /**
  82       * Sorted top-level instances of WP_Customize_Panel and WP_Customize_Section.
  83       *
  84       * @since 4.0.0
  85       * @var array
  86       */
  87      protected $containers = array();
  88  
  89      /**
  90       * Registered instances of WP_Customize_Panel.
  91       *
  92       * @since 4.0.0
  93       * @var array
  94       */
  95      protected $panels = array();
  96  
  97      /**
  98       * List of core components.
  99       *
 100       * @since 4.5.0
 101       * @var array
 102       */
 103      protected $components = array( 'nav_menus' );
 104  
 105      /**
 106       * Registered instances of WP_Customize_Section.
 107       *
 108       * @since 3.4.0
 109       * @var array
 110       */
 111      protected $sections = array();
 112  
 113      /**
 114       * Registered instances of WP_Customize_Control.
 115       *
 116       * @since 3.4.0
 117       * @var array
 118       */
 119      protected $controls = array();
 120  
 121      /**
 122       * Panel types that may be rendered from JS templates.
 123       *
 124       * @since 4.3.0
 125       * @var array
 126       */
 127      protected $registered_panel_types = array();
 128  
 129      /**
 130       * Section types that may be rendered from JS templates.
 131       *
 132       * @since 4.3.0
 133       * @var array
 134       */
 135      protected $registered_section_types = array();
 136  
 137      /**
 138       * Control types that may be rendered from JS templates.
 139       *
 140       * @since 4.1.0
 141       * @var array
 142       */
 143      protected $registered_control_types = array();
 144  
 145      /**
 146       * Initial URL being previewed.
 147       *
 148       * @since 4.4.0
 149       * @var string
 150       */
 151      protected $preview_url;
 152  
 153      /**
 154       * URL to link the user to when closing the Customizer.
 155       *
 156       * @since 4.4.0
 157       * @var string
 158       */
 159      protected $return_url;
 160  
 161      /**
 162       * Mapping of 'panel', 'section', 'control' to the ID which should be autofocused.
 163       *
 164       * @since 4.4.0
 165       * @var string[]
 166       */
 167      protected $autofocus = array();
 168  
 169      /**
 170       * Messenger channel.
 171       *
 172       * @since 4.7.0
 173       * @var string
 174       */
 175      protected $messenger_channel;
 176  
 177      /**
 178       * Whether the autosave revision of the changeset should be loaded.
 179       *
 180       * @since 4.9.0
 181       * @var bool
 182       */
 183      protected $autosaved = false;
 184  
 185      /**
 186       * Whether the changeset branching is allowed.
 187       *
 188       * @since 4.9.0
 189       * @var bool
 190       */
 191      protected $branching = true;
 192  
 193      /**
 194       * Whether settings should be previewed.
 195       *
 196       * @since 4.9.0
 197       * @var bool
 198       */
 199      protected $settings_previewed = true;
 200  
 201      /**
 202       * Whether a starter content changeset was saved.
 203       *
 204       * @since 4.9.0
 205       * @var bool
 206       */
 207      protected $saved_starter_content_changeset = false;
 208  
 209      /**
 210       * Unsanitized values for Customize Settings parsed from $_POST['customized'].
 211       *
 212       * @var array
 213       */
 214      private $_post_values;
 215  
 216      /**
 217       * Changeset UUID.
 218       *
 219       * @since 4.7.0
 220       * @var string
 221       */
 222      private $_changeset_uuid;
 223  
 224      /**
 225       * Changeset post ID.
 226       *
 227       * @since 4.7.0
 228       * @var int|false
 229       */
 230      private $_changeset_post_id;
 231  
 232      /**
 233       * Changeset data loaded from a customize_changeset post.
 234       *
 235       * @since 4.7.0
 236       * @var array|null
 237       */
 238      private $_changeset_data;
 239  
 240      /**
 241       * Constructor.
 242       *
 243       * @since 3.4.0
 244       * @since 4.7.0 Added `$args` parameter.
 245       *
 246       * @param array $args {
 247       *     Args.
 248       *
 249       *     @type null|string|false $changeset_uuid     Changeset UUID, the `post_name` for the customize_changeset post containing the customized state.
 250       *                                                 Defaults to `null` resulting in a UUID to be immediately generated. If `false` is provided, then
 251       *                                                 then the changeset UUID will be determined during `after_setup_theme`: when the
 252       *                                                 `customize_changeset_branching` filter returns false, then the default UUID will be that
 253       *                                                 of the most recent `customize_changeset` post that has a status other than 'auto-draft',
 254       *                                                 'publish', or 'trash'. Otherwise, if changeset branching is enabled, then a random UUID will be used.
 255       *     @type string            $theme              Theme to be previewed (for theme switch). Defaults to customize_theme or theme query params.
 256       *     @type string            $messenger_channel  Messenger channel. Defaults to customize_messenger_channel query param.
 257       *     @type bool              $settings_previewed If settings should be previewed. Defaults to true.
 258       *     @type bool              $branching          If changeset branching is allowed; otherwise, changesets are linear. Defaults to true.
 259       *     @type bool              $autosaved          If data from a changeset's autosaved revision should be loaded if it exists. Defaults to false.
 260       * }
 261       */
 262  	public function __construct( $args = array() ) {
 263  
 264          $args = array_merge(
 265              array_fill_keys( array( 'changeset_uuid', 'theme', 'messenger_channel', 'settings_previewed', 'autosaved', 'branching' ), null ),
 266              $args
 267          );
 268  
 269          // Note that the UUID format will be validated in the setup_theme() method.
 270          if ( ! isset( $args['changeset_uuid'] ) ) {
 271              $args['changeset_uuid'] = wp_generate_uuid4();
 272          }
 273  
 274          /*
 275           * The theme and messenger_channel should be supplied via $args,
 276           * but they are also looked at in the $_REQUEST global here for back-compat.
 277           */
 278          if ( ! isset( $args['theme'] ) ) {
 279              if ( isset( $_REQUEST['customize_theme'] ) ) {
 280                  $args['theme'] = wp_unslash( $_REQUEST['customize_theme'] );
 281              } elseif ( isset( $_REQUEST['theme'] ) ) { // Deprecated.
 282                  $args['theme'] = wp_unslash( $_REQUEST['theme'] );
 283              }
 284          }
 285          if ( ! isset( $args['messenger_channel'] ) && isset( $_REQUEST['customize_messenger_channel'] ) ) {
 286              $args['messenger_channel'] = sanitize_key( wp_unslash( $_REQUEST['customize_messenger_channel'] ) );
 287          }
 288  
 289          // Do not load 'widgets' component if a block theme is activated.
 290          if ( ! wp_is_block_theme() ) {
 291              $this->components[] = 'widgets';
 292          }
 293  
 294          $this->original_stylesheet = get_stylesheet();
 295          $this->theme               = wp_get_theme( 0 === validate_file( $args['theme'] ) ? $args['theme'] : null );
 296          $this->messenger_channel   = $args['messenger_channel'];
 297          $this->_changeset_uuid     = $args['changeset_uuid'];
 298  
 299          foreach ( array( 'settings_previewed', 'autosaved', 'branching' ) as $key ) {
 300              if ( isset( $args[ $key ] ) ) {
 301                  $this->$key = (bool) $args[ $key ];
 302              }
 303          }
 304  
 305          require_once  ABSPATH . WPINC . '/class-wp-customize-setting.php';
 306          require_once  ABSPATH . WPINC . '/class-wp-customize-panel.php';
 307          require_once  ABSPATH . WPINC . '/class-wp-customize-section.php';
 308          require_once  ABSPATH . WPINC . '/class-wp-customize-control.php';
 309  
 310          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-color-control.php';
 311          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-media-control.php';
 312          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-upload-control.php';
 313          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-image-control.php';
 314          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-background-image-control.php';
 315          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-background-position-control.php';
 316          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-cropped-image-control.php';
 317          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-site-icon-control.php';
 318          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-header-image-control.php';
 319          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-theme-control.php';
 320          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-code-editor-control.php';
 321          require_once  ABSPATH . WPINC . '/customize/class-wp-widget-area-customize-control.php';
 322          require_once  ABSPATH . WPINC . '/customize/class-wp-widget-form-customize-control.php';
 323          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-control.php';
 324          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-item-control.php';
 325          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-location-control.php';
 326          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-name-control.php';
 327          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-locations-control.php';
 328          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-auto-add-control.php';
 329  
 330          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menus-panel.php';
 331  
 332          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-themes-panel.php';
 333          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-themes-section.php';
 334          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-sidebar-section.php';
 335          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-section.php';
 336  
 337          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-custom-css-setting.php';
 338          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-filter-setting.php';
 339          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-header-image-setting.php';
 340          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-background-image-setting.php';
 341          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-item-setting.php';
 342          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-setting.php';
 343  
 344          /**
 345           * Filters the core Customizer components to load.
 346           *
 347           * This allows Core components to be excluded from being instantiated by
 348           * filtering them out of the array. Note that this filter generally runs
 349           * during the {@see 'plugins_loaded'} action, so it cannot be added
 350           * in a theme.
 351           *
 352           * @since 4.4.0
 353           *
 354           * @see WP_Customize_Manager::__construct()
 355           *
 356           * @param string[]             $components Array of core components to load.
 357           * @param WP_Customize_Manager $manager    WP_Customize_Manager instance.
 358           */
 359          $components = apply_filters( 'customize_loaded_components', $this->components, $this );
 360  
 361          require_once  ABSPATH . WPINC . '/customize/class-wp-customize-selective-refresh.php';
 362          $this->selective_refresh = new WP_Customize_Selective_Refresh( $this );
 363  
 364          if ( in_array( 'widgets', $components, true ) ) {
 365              require_once  ABSPATH . WPINC . '/class-wp-customize-widgets.php';
 366              $this->widgets = new WP_Customize_Widgets( $this );
 367          }
 368  
 369          if ( in_array( 'nav_menus', $components, true ) ) {
 370              require_once  ABSPATH . WPINC . '/class-wp-customize-nav-menus.php';
 371              $this->nav_menus = new WP_Customize_Nav_Menus( $this );
 372          }
 373  
 374          add_action( 'setup_theme', array( $this, 'setup_theme' ) );
 375          add_action( 'wp_loaded', array( $this, 'wp_loaded' ) );
 376  
 377          // Do not spawn cron (especially the alternate cron) while running the Customizer.
 378          remove_action( 'init', 'wp_cron' );
 379  
 380          // Do not run update checks when rendering the controls.
 381          remove_action( 'admin_init', '_maybe_update_core' );
 382          remove_action( 'admin_init', '_maybe_update_plugins' );
 383          remove_action( 'admin_init', '_maybe_update_themes' );
 384  
 385          add_action( 'wp_ajax_customize_save', array( $this, 'save' ) );
 386          add_action( 'wp_ajax_customize_trash', array( $this, 'handle_changeset_trash_request' ) );
 387          add_action( 'wp_ajax_customize_refresh_nonces', array( $this, 'refresh_nonces' ) );
 388          add_action( 'wp_ajax_customize_load_themes', array( $this, 'handle_load_themes_request' ) );
 389          add_filter( 'heartbeat_settings', array( $this, 'add_customize_screen_to_heartbeat_settings' ) );
 390          add_filter( 'heartbeat_received', array( $this, 'check_changeset_lock_with_heartbeat' ), 10, 3 );
 391          add_action( 'wp_ajax_customize_override_changeset_lock', array( $this, 'handle_override_changeset_lock_request' ) );
 392          add_action( 'wp_ajax_customize_dismiss_autosave_or_lock', array( $this, 'handle_dismiss_autosave_or_lock_request' ) );
 393  
 394          add_action( 'customize_register', array( $this, 'register_controls' ) );
 395          add_action( 'customize_register', array( $this, 'register_dynamic_settings' ), 11 ); // Allow code to create settings first.
 396          add_action( 'customize_controls_init', array( $this, 'prepare_controls' ) );
 397          add_action( 'customize_controls_enqueue_scripts', array( $this, 'enqueue_control_scripts' ) );
 398  
 399          // Render Common, Panel, Section, and Control templates.
 400          add_action( 'customize_controls_print_footer_scripts', array( $this, 'render_panel_templates' ), 1 );
 401          add_action( 'customize_controls_print_footer_scripts', array( $this, 'render_section_templates' ), 1 );
 402          add_action( 'customize_controls_print_footer_scripts', array( $this, 'render_control_templates' ), 1 );
 403  
 404          // Export header video settings with the partial response.
 405          add_filter( 'customize_render_partials_response', array( $this, 'export_header_video_settings' ), 10, 3 );
 406  
 407          // Export the settings to JS via the _wpCustomizeSettings variable.
 408          add_action( 'customize_controls_print_footer_scripts', array( $this, 'customize_pane_settings' ), 1000 );
 409  
 410          // Add theme update notices.
 411          if ( current_user_can( 'install_themes' ) || current_user_can( 'update_themes' ) ) {
 412              require_once  ABSPATH . 'wp-admin/includes/update.php';
 413              add_action( 'customize_controls_print_footer_scripts', 'wp_print_admin_notice_templates' );
 414          }
 415      }
 416  
 417      /**
 418       * Returns true if it's an Ajax request.
 419       *
 420       * @since 3.4.0
 421       * @since 4.2.0 Added `$action` param.
 422       *
 423       * @param string|null $action Whether the supplied Ajax action is being run.
 424       * @return bool True if it's an Ajax request, false otherwise.
 425       */
 426  	public function doing_ajax( $action = null ) {
 427          if ( ! wp_doing_ajax() ) {
 428              return false;
 429          }
 430  
 431          if ( ! $action ) {
 432              return true;
 433          } else {
 434              /*
 435               * Note: we can't just use doing_action( "wp_ajax_{$action}" ) because we need
 436               * to check before admin-ajax.php gets to that point.
 437               */
 438              return isset( $_REQUEST['action'] ) && wp_unslash( $_REQUEST['action'] ) === $action;
 439          }
 440      }
 441  
 442      /**
 443       * Custom wp_die wrapper. Returns either the standard message for UI
 444       * or the Ajax message.
 445       *
 446       * @since 3.4.0
 447       *
 448       * @param string|WP_Error $ajax_message Ajax return.
 449       * @param string          $message      Optional. UI message.
 450       */
 451  	protected function wp_die( $ajax_message, $message = null ) {
 452          if ( $this->doing_ajax() ) {
 453              wp_die( $ajax_message );
 454          }
 455  
 456          if ( ! $message ) {
 457              $message = __( 'An error occurred while customizing. Please refresh the page and try again.' );
 458          }
 459  
 460          if ( $this->messenger_channel ) {
 461              ob_start();
 462              wp_enqueue_scripts();
 463              wp_print_scripts( array( 'customize-base' ) );
 464  
 465              $settings = array(
 466                  'messengerArgs' => array(
 467                      'channel' => $this->messenger_channel,
 468                      'url'     => wp_customize_url(),
 469                  ),
 470                  'error'         => $ajax_message,
 471              );
 472              $message .= ob_get_clean();
 473              ob_start();
 474              ?>
 475              <script>
 476              ( function( api, settings ) {
 477                  var preview = new api.Messenger( settings.messengerArgs );
 478                  preview.send( 'iframe-loading-error', settings.error );
 479              } )( wp.customize, <?php echo wp_json_encode( $settings ); ?> );
 480              </script>
 481              <?php
 482              $message .= wp_get_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
 483          }
 484  
 485          wp_die( $message );
 486      }
 487  
 488      /**
 489       * Returns the Ajax wp_die() handler if it's a customized request.
 490       *
 491       * @since 3.4.0
 492       * @deprecated 4.7.0
 493       *
 494       * @return callable Die handler.
 495       */
 496  	public function wp_die_handler() {
 497          _deprecated_function( __METHOD__, '4.7.0' );
 498  
 499          if ( $this->doing_ajax() || isset( $_POST['customized'] ) ) {
 500              return '_ajax_wp_die_handler';
 501          }
 502  
 503          return '_default_wp_die_handler';
 504      }
 505  
 506      /**
 507       * Starts preview and customize theme.
 508       *
 509       * Check if customize query variable exist. Init filters to filter the active theme.
 510       *
 511       * @since 3.4.0
 512       *
 513       * @global string $pagenow The filename of the current screen.
 514       */
 515  	public function setup_theme() {
 516          global $pagenow;
 517  
 518          // Check permissions for customize.php access since this method is called before customize.php can run any code.
 519          if ( 'customize.php' === $pagenow && ! current_user_can( 'customize' ) ) {
 520              if ( ! is_user_logged_in() ) {
 521                  auth_redirect();
 522              } else {
 523                  wp_die(
 524                      '<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
 525                      '<p>' . __( 'Sorry, you are not allowed to customize this site.' ) . '</p>',
 526                      403
 527                  );
 528              }
 529              return;
 530          }
 531  
 532          // If a changeset was provided is invalid.
 533          if ( isset( $this->_changeset_uuid ) && false !== $this->_changeset_uuid && ! wp_is_uuid( $this->_changeset_uuid ) ) {
 534              $this->wp_die( -1, __( 'Invalid changeset UUID' ) );
 535          }
 536  
 537          /*
 538           * Clear incoming post data if the user lacks a CSRF token (nonce). Note that the customizer
 539           * application will inject the customize_preview_nonce query parameter into all Ajax requests.
 540           * For similar behavior elsewhere in WordPress, see rest_cookie_check_errors() which logs out
 541           * a user when a valid nonce isn't present.
 542           */
 543          $has_post_data_nonce = (
 544              check_ajax_referer( 'preview-customize_' . $this->get_stylesheet(), 'nonce', false )
 545              ||
 546              check_ajax_referer( 'save-customize_' . $this->get_stylesheet(), 'nonce', false )
 547              ||
 548              check_ajax_referer( 'preview-customize_' . $this->get_stylesheet(), 'customize_preview_nonce', false )
 549          );
 550          if ( ! current_user_can( 'customize' ) || ! $has_post_data_nonce ) {
 551              unset( $_POST['customized'] );
 552              unset( $_REQUEST['customized'] );
 553          }
 554  
 555          /*
 556           * If unauthenticated then require a valid changeset UUID to load the preview.
 557           * In this way, the UUID serves as a secret key. If the messenger channel is present,
 558           * then send unauthenticated code to prompt re-auth.
 559           */
 560          if ( ! current_user_can( 'customize' ) && ! $this->changeset_post_id() ) {
 561              $this->wp_die( $this->messenger_channel ? 0 : -1, __( 'Non-existent changeset UUID.' ) );
 562          }
 563  
 564          if ( ! headers_sent() ) {
 565              send_origin_headers();
 566          }
 567  
 568          // Hide the admin bar if we're embedded in the customizer iframe.
 569          if ( $this->messenger_channel ) {
 570              show_admin_bar( false );
 571          }
 572  
 573          if ( $this->is_theme_active() ) {
 574              // Once the theme is loaded, we'll validate it.
 575              add_action( 'after_setup_theme', array( $this, 'after_setup_theme' ) );
 576          } else {
 577              /*
 578               * If the requested theme is not the active theme and the user doesn't have
 579               * the switch_themes cap, bail.
 580               */
 581              if ( ! current_user_can( 'switch_themes' ) ) {
 582                  $this->wp_die( -1, __( 'Sorry, you are not allowed to edit theme options on this site.' ) );
 583              }
 584  
 585              // If the theme has errors while loading, bail.
 586              if ( $this->theme()->errors() ) {
 587                  $this->wp_die( -1, $this->theme()->errors()->get_error_message() );
 588              }
 589  
 590              // If the theme isn't allowed per multisite settings, bail.
 591              if ( ! $this->theme()->is_allowed() ) {
 592                  $this->wp_die( -1, __( 'The requested theme does not exist.' ) );
 593              }
 594          }
 595  
 596          // Make sure changeset UUID is established immediately after the theme is loaded.
 597          add_action( 'after_setup_theme', array( $this, 'establish_loaded_changeset' ), 5 );
 598  
 599          /*
 600           * Import theme starter content for fresh installations when landing in the customizer.
 601           * Import starter content at after_setup_theme:100 so that any
 602           * add_theme_support( 'starter-content' ) calls will have been made.
 603           */
 604          if ( get_option( 'fresh_site' ) && 'customize.php' === $pagenow ) {
 605              add_action( 'after_setup_theme', array( $this, 'import_theme_starter_content' ), 100 );
 606          }
 607  
 608          $this->start_previewing_theme();
 609      }
 610  
 611      /**
 612       * Establishes the loaded changeset.
 613       *
 614       * This method runs right at after_setup_theme and applies the 'customize_changeset_branching' filter to determine
 615       * whether concurrent changesets are allowed. Then if the Customizer is not initialized with a `changeset_uuid` param,
 616       * this method will determine which UUID should be used. If changeset branching is disabled, then the most saved
 617       * changeset will be loaded by default. Otherwise, if there are no existing saved changesets or if changeset branching is
 618       * enabled, then a new UUID will be generated.
 619       *
 620       * @since 4.9.0
 621       *
 622       * @global string $pagenow The filename of the current screen.
 623       */
 624  	public function establish_loaded_changeset() {
 625          global $pagenow;
 626  
 627          if ( empty( $this->_changeset_uuid ) ) {
 628              $changeset_uuid = null;
 629  
 630              if ( ! $this->branching() && $this->is_theme_active() ) {
 631                  $unpublished_changeset_posts = $this->get_changeset_posts(
 632                      array(
 633                          'post_status'               => array_diff( get_post_stati(), array( 'auto-draft', 'publish', 'trash', 'inherit', 'private' ) ),
 634                          'exclude_restore_dismissed' => false,
 635                          'author'                    => 'any',
 636                          'posts_per_page'            => 1,
 637                          'order'                     => 'DESC',
 638                          'orderby'                   => 'date',
 639                      )
 640                  );
 641                  $unpublished_changeset_post  = array_shift( $unpublished_changeset_posts );
 642                  if ( ! empty( $unpublished_changeset_post ) && wp_is_uuid( $unpublished_changeset_post->post_name ) ) {
 643                      $changeset_uuid = $unpublished_changeset_post->post_name;
 644                  }
 645              }
 646  
 647              // If no changeset UUID has been set yet, then generate a new one.
 648              if ( empty( $changeset_uuid ) ) {
 649                  $changeset_uuid = wp_generate_uuid4();
 650              }
 651  
 652              $this->_changeset_uuid = $changeset_uuid;
 653          }
 654  
 655          if ( is_admin() && 'customize.php' === $pagenow ) {
 656              $this->set_changeset_lock( $this->changeset_post_id() );
 657          }
 658      }
 659  
 660      /**
 661       * Callback to validate a theme once it is loaded
 662       *
 663       * @since 3.4.0
 664       */
 665  	public function after_setup_theme() {
 666          $doing_ajax_or_is_customized = ( $this->doing_ajax() || isset( $_POST['customized'] ) );
 667          if ( ! $doing_ajax_or_is_customized && ! validate_current_theme() ) {
 668              wp_redirect( 'themes.php?broken=true' );
 669              exit;
 670          }
 671      }
 672  
 673      /**
 674       * If the theme to be previewed isn't the active theme, add filter callbacks
 675       * to swap it out at runtime.
 676       *
 677       * @since 3.4.0
 678       */
 679  	public function start_previewing_theme() {
 680          // Bail if we're already previewing.
 681          if ( $this->is_preview() ) {
 682              return;
 683          }
 684  
 685          $this->previewing = true;
 686  
 687          if ( ! $this->is_theme_active() ) {
 688              add_filter( 'template', array( $this, 'get_template' ) );
 689              add_filter( 'stylesheet', array( $this, 'get_stylesheet' ) );
 690              add_filter( 'pre_option_current_theme', array( $this, 'current_theme' ) );
 691  
 692              // @link: https://core.trac.wordpress.org/ticket/20027
 693              add_filter( 'pre_option_stylesheet', array( $this, 'get_stylesheet' ) );
 694              add_filter( 'pre_option_template', array( $this, 'get_template' ) );
 695  
 696              // Handle custom theme roots.
 697              add_filter( 'pre_option_stylesheet_root', array( $this, 'get_stylesheet_root' ) );
 698              add_filter( 'pre_option_template_root', array( $this, 'get_template_root' ) );
 699          }
 700  
 701          /**
 702           * Fires once the Customizer theme preview has started.
 703           *
 704           * @since 3.4.0
 705           *
 706           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
 707           */
 708          do_action( 'start_previewing_theme', $this );
 709      }
 710  
 711      /**
 712       * Stops previewing the selected theme.
 713       *
 714       * Removes filters to change the active theme.
 715       *
 716       * @since 3.4.0
 717       */
 718  	public function stop_previewing_theme() {
 719          if ( ! $this->is_preview() ) {
 720              return;
 721          }
 722  
 723          $this->previewing = false;
 724  
 725          if ( ! $this->is_theme_active() ) {
 726              remove_filter( 'template', array( $this, 'get_template' ) );
 727              remove_filter( 'stylesheet', array( $this, 'get_stylesheet' ) );
 728              remove_filter( 'pre_option_current_theme', array( $this, 'current_theme' ) );
 729  
 730              // @link: https://core.trac.wordpress.org/ticket/20027
 731              remove_filter( 'pre_option_stylesheet', array( $this, 'get_stylesheet' ) );
 732              remove_filter( 'pre_option_template', array( $this, 'get_template' ) );
 733  
 734              // Handle custom theme roots.
 735              remove_filter( 'pre_option_stylesheet_root', array( $this, 'get_stylesheet_root' ) );
 736              remove_filter( 'pre_option_template_root', array( $this, 'get_template_root' ) );
 737          }
 738  
 739          /**
 740           * Fires once the Customizer theme preview has stopped.
 741           *
 742           * @since 3.4.0
 743           *
 744           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
 745           */
 746          do_action( 'stop_previewing_theme', $this );
 747      }
 748  
 749      /**
 750       * Gets whether settings are or will be previewed.
 751       *
 752       * @since 4.9.0
 753       *
 754       * @see WP_Customize_Setting::preview()
 755       *
 756       * @return bool
 757       */
 758  	public function settings_previewed() {
 759          return $this->settings_previewed;
 760      }
 761  
 762      /**
 763       * Gets whether data from a changeset's autosaved revision should be loaded if it exists.
 764       *
 765       * @since 4.9.0
 766       *
 767       * @see WP_Customize_Manager::changeset_data()
 768       *
 769       * @return bool Is using autosaved changeset revision.
 770       */
 771  	public function autosaved() {
 772          return $this->autosaved;
 773      }
 774  
 775      /**
 776       * Whether the changeset branching is allowed.
 777       *
 778       * @since 4.9.0
 779       *
 780       * @see WP_Customize_Manager::establish_loaded_changeset()
 781       *
 782       * @return bool Is changeset branching.
 783       */
 784  	public function branching() {
 785  
 786          /**
 787           * Filters whether or not changeset branching is allowed.
 788           *
 789           * By default in core, when changeset branching is not allowed, changesets will operate
 790           * linearly in that only one saved changeset will exist at a time (with a 'draft' or
 791           * 'future' status). This makes the Customizer operate in a way that is similar to going to
 792           * "edit" to one existing post: all users will be making changes to the same post, and autosave
 793           * revisions will be made for that post.
 794           *
 795           * By contrast, when changeset branching is allowed, then the model is like users going
 796           * to "add new" for a page and each user makes changes independently of each other since
 797           * they are all operating on their own separate pages, each getting their own separate
 798           * initial auto-drafts and then once initially saved, autosave revisions on top of that
 799           * user's specific post.
 800           *
 801           * Since linear changesets are deemed to be more suitable for the majority of WordPress users,
 802           * they are the default. For WordPress sites that have heavy site management in the Customizer
 803           * by multiple users then branching changesets should be enabled by means of this filter.
 804           *
 805           * @since 4.9.0
 806           *
 807           * @param bool                 $allow_branching Whether branching is allowed. If `false`, the default,
 808           *                                              then only one saved changeset exists at a time.
 809           * @param WP_Customize_Manager $wp_customize    Manager instance.
 810           */
 811          $this->branching = apply_filters( 'customize_changeset_branching', $this->branching, $this );
 812  
 813          return $this->branching;
 814      }
 815  
 816      /**
 817       * Gets the changeset UUID.
 818       *
 819       * @since 4.7.0
 820       *
 821       * @see WP_Customize_Manager::establish_loaded_changeset()
 822       *
 823       * @return string UUID.
 824       */
 825  	public function changeset_uuid() {
 826          if ( empty( $this->_changeset_uuid ) ) {
 827              $this->establish_loaded_changeset();
 828          }
 829          return $this->_changeset_uuid;
 830      }
 831  
 832      /**
 833       * Gets the theme being customized.
 834       *
 835       * @since 3.4.0
 836       *
 837       * @return WP_Theme
 838       */
 839  	public function theme() {
 840          if ( ! $this->theme ) {
 841              $this->theme = wp_get_theme();
 842          }
 843          return $this->theme;
 844      }
 845  
 846      /**
 847       * Gets the registered settings.
 848       *
 849       * @since 3.4.0
 850       *
 851       * @return array
 852       */
 853  	public function settings() {
 854          return $this->settings;
 855      }
 856  
 857      /**
 858       * Gets the registered controls.
 859       *
 860       * @since 3.4.0
 861       *
 862       * @return array
 863       */
 864  	public function controls() {
 865          return $this->controls;
 866      }
 867  
 868      /**
 869       * Gets the registered containers.
 870       *
 871       * @since 4.0.0
 872       *
 873       * @return array
 874       */
 875  	public function containers() {
 876          return $this->containers;
 877      }
 878  
 879      /**
 880       * Gets the registered sections.
 881       *
 882       * @since 3.4.0
 883       *
 884       * @return array
 885       */
 886  	public function sections() {
 887          return $this->sections;
 888      }
 889  
 890      /**
 891       * Gets the registered panels.
 892       *
 893       * @since 4.0.0
 894       *
 895       * @return array Panels.
 896       */
 897  	public function panels() {
 898          return $this->panels;
 899      }
 900  
 901      /**
 902       * Checks if the current theme is active.
 903       *
 904       * @since 3.4.0
 905       *
 906       * @return bool
 907       */
 908  	public function is_theme_active() {
 909          return $this->get_stylesheet() === $this->original_stylesheet;
 910      }
 911  
 912      /**
 913       * Registers styles/scripts and initialize the preview of each setting
 914       *
 915       * @since 3.4.0
 916       */
 917  	public function wp_loaded() {
 918  
 919          /*
 920           * Unconditionally register core types for panels, sections, and controls
 921           * in case plugin unhooks all customize_register actions.
 922           */
 923          $this->register_panel_type( 'WP_Customize_Panel' );
 924          $this->register_panel_type( 'WP_Customize_Themes_Panel' );
 925          $this->register_section_type( 'WP_Customize_Section' );
 926          $this->register_section_type( 'WP_Customize_Sidebar_Section' );
 927          $this->register_section_type( 'WP_Customize_Themes_Section' );
 928          $this->register_control_type( 'WP_Customize_Color_Control' );
 929          $this->register_control_type( 'WP_Customize_Media_Control' );
 930          $this->register_control_type( 'WP_Customize_Upload_Control' );
 931          $this->register_control_type( 'WP_Customize_Image_Control' );
 932          $this->register_control_type( 'WP_Customize_Background_Image_Control' );
 933          $this->register_control_type( 'WP_Customize_Background_Position_Control' );
 934          $this->register_control_type( 'WP_Customize_Cropped_Image_Control' );
 935          $this->register_control_type( 'WP_Customize_Site_Icon_Control' );
 936          $this->register_control_type( 'WP_Customize_Theme_Control' );
 937          $this->register_control_type( 'WP_Customize_Code_Editor_Control' );
 938          $this->register_control_type( 'WP_Customize_Date_Time_Control' );
 939  
 940          /**
 941           * Fires once WordPress has loaded, allowing scripts and styles to be initialized.
 942           *
 943           * @since 3.4.0
 944           *
 945           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
 946           */
 947          do_action( 'customize_register', $this );
 948  
 949          if ( $this->settings_previewed() ) {
 950              foreach ( $this->settings as $setting ) {
 951                  $setting->preview();
 952              }
 953          }
 954  
 955          if ( $this->is_preview() && ! is_admin() ) {
 956              $this->customize_preview_init();
 957          }
 958      }
 959  
 960      /**
 961       * Prevents Ajax requests from following redirects when previewing a theme
 962       * by issuing a 200 response instead of a 30x.
 963       *
 964       * Instead, the JS will sniff out the location header.
 965       *
 966       * @since 3.4.0
 967       * @deprecated 4.7.0
 968       *
 969       * @param int $status Status.
 970       * @return int
 971       */
 972  	public function wp_redirect_status( $status ) {
 973          _deprecated_function( __FUNCTION__, '4.7.0' );
 974  
 975          if ( $this->is_preview() && ! is_admin() ) {
 976              return 200;
 977          }
 978  
 979          return $status;
 980      }
 981  
 982      /**
 983       * Finds the changeset post ID for a given changeset UUID.
 984       *
 985       * @since 4.7.0
 986       *
 987       * @param string $uuid Changeset UUID.
 988       * @return int|null Returns post ID on success and null on failure.
 989       */
 990  	public function find_changeset_post_id( $uuid ) {
 991          $cache_group       = 'customize_changeset_post';
 992          $changeset_post_id = wp_cache_get( $uuid, $cache_group );
 993          if ( $changeset_post_id && 'customize_changeset' === get_post_type( $changeset_post_id ) ) {
 994              return $changeset_post_id;
 995          }
 996  
 997          $changeset_post_query = new WP_Query(
 998              array(
 999                  'post_type'              => 'customize_changeset',
1000                  'post_status'            => get_post_stati(),
1001                  'name'                   => $uuid,
1002                  'posts_per_page'         => 1,
1003                  'no_found_rows'          => true,
1004                  'cache_results'          => true,
1005                  'update_post_meta_cache' => false,
1006                  'update_post_term_cache' => false,
1007                  'lazy_load_term_meta'    => false,
1008              )
1009          );
1010          if ( ! empty( $changeset_post_query->posts ) ) {
1011              // Note: 'fields'=>'ids' is not being used in order to cache the post object as it will be needed.
1012              $changeset_post_id = $changeset_post_query->posts[0]->ID;
1013              wp_cache_set( $uuid, $changeset_post_id, $cache_group );
1014              return $changeset_post_id;
1015          }
1016  
1017          return null;
1018      }
1019  
1020      /**
1021       * Gets changeset posts.
1022       *
1023       * @since 4.9.0
1024       *
1025       * @param array $args {
1026       *     Args to pass into `get_posts()` to query changesets.
1027       *
1028       *     @type int    $posts_per_page             Number of posts to return. Defaults to -1 (all posts).
1029       *     @type int    $author                     Post author. Defaults to current user.
1030       *     @type string $post_status                Status of changeset. Defaults to 'auto-draft'.
1031       *     @type bool   $exclude_restore_dismissed  Whether to exclude changeset auto-drafts that have been dismissed. Defaults to true.
1032       * }
1033       * @return WP_Post[] Auto-draft changesets.
1034       */
1035  	protected function get_changeset_posts( $args = array() ) {
1036          $default_args = array(
1037              'exclude_restore_dismissed' => true,
1038              'posts_per_page'            => -1,
1039              'post_type'                 => 'customize_changeset',
1040              'post_status'               => 'auto-draft',
1041              'order'                     => 'DESC',
1042              'orderby'                   => 'date',
1043              'no_found_rows'             => true,
1044              'cache_results'             => true,
1045              'update_post_meta_cache'    => false,
1046              'update_post_term_cache'    => false,
1047              'lazy_load_term_meta'       => false,
1048          );
1049          if ( get_current_user_id() ) {
1050              $default_args['author'] = get_current_user_id();
1051          }
1052          $args = array_merge( $default_args, $args );
1053  
1054          if ( ! empty( $args['exclude_restore_dismissed'] ) ) {
1055              unset( $args['exclude_restore_dismissed'] );
1056              $args['meta_query'] = array(
1057                  array(
1058                      'key'     => '_customize_restore_dismissed',
1059                      'compare' => 'NOT EXISTS',
1060                  ),
1061              );
1062          }
1063  
1064          return get_posts( $args );
1065      }
1066  
1067      /**
1068       * Dismisses all of the current user's auto-drafts (other than the present one).
1069       *
1070       * @since 4.9.0
1071       * @return int The number of auto-drafts that were dismissed.
1072       */
1073  	protected function dismiss_user_auto_draft_changesets() {
1074          $changeset_autodraft_posts = $this->get_changeset_posts(
1075              array(
1076                  'post_status'               => 'auto-draft',
1077                  'exclude_restore_dismissed' => true,
1078                  'posts_per_page'            => -1,
1079              )
1080          );
1081          $dismissed                 = 0;
1082          foreach ( $changeset_autodraft_posts as $autosave_autodraft_post ) {
1083              if ( $autosave_autodraft_post->ID === $this->changeset_post_id() ) {
1084                  continue;
1085              }
1086              if ( update_post_meta( $autosave_autodraft_post->ID, '_customize_restore_dismissed', true ) ) {
1087                  ++$dismissed;
1088              }
1089          }
1090          return $dismissed;
1091      }
1092  
1093      /**
1094       * Gets the changeset post ID for the loaded changeset.
1095       *
1096       * @since 4.7.0
1097       *
1098       * @return int|null Post ID on success or null if there is no post yet saved.
1099       */
1100  	public function changeset_post_id() {
1101          if ( ! isset( $this->_changeset_post_id ) ) {
1102              $post_id = $this->find_changeset_post_id( $this->changeset_uuid() );
1103              if ( ! $post_id ) {
1104                  $post_id = false;
1105              }
1106              $this->_changeset_post_id = $post_id;
1107          }
1108          if ( false === $this->_changeset_post_id ) {
1109              return null;
1110          }
1111          return $this->_changeset_post_id;
1112      }
1113  
1114      /**
1115       * Gets the data stored in a changeset post.
1116       *
1117       * @since 4.7.0
1118       *
1119       * @param int $post_id Changeset post ID.
1120       * @return array|WP_Error Changeset data or WP_Error on error.
1121       */
1122  	protected function get_changeset_post_data( $post_id ) {
1123          if ( ! $post_id ) {
1124              return new WP_Error( 'empty_post_id' );
1125          }
1126          $changeset_post = get_post( $post_id );
1127          if ( ! $changeset_post ) {
1128              return new WP_Error( 'missing_post' );
1129          }
1130          if ( 'revision' === $changeset_post->post_type ) {
1131              if ( 'customize_changeset' !== get_post_type( $changeset_post->post_parent ) ) {
1132                  return new WP_Error( 'wrong_post_type' );
1133              }
1134          } elseif ( 'customize_changeset' !== $changeset_post->post_type ) {
1135              return new WP_Error( 'wrong_post_type' );
1136          }
1137          $changeset_data = json_decode( $changeset_post->post_content, true );
1138          $last_error     = json_last_error();
1139          if ( $last_error ) {
1140              return new WP_Error( 'json_parse_error', '', $last_error );
1141          }
1142          if ( ! is_array( $changeset_data ) ) {
1143              return new WP_Error( 'expected_array' );
1144          }
1145          return $changeset_data;
1146      }
1147  
1148      /**
1149       * Gets changeset data.
1150       *
1151       * @since 4.7.0
1152       * @since 4.9.0 This will return the changeset's data with a user's autosave revision merged on top, if one exists and $autosaved is true.
1153       *
1154       * @return array Changeset data.
1155       */
1156  	public function changeset_data() {
1157          if ( isset( $this->_changeset_data ) ) {
1158              return $this->_changeset_data;
1159          }
1160          $changeset_post_id = $this->changeset_post_id();
1161          if ( ! $changeset_post_id ) {
1162              $this->_changeset_data = array();
1163          } else {
1164              if ( $this->autosaved() && is_user_logged_in() ) {
1165                  $autosave_post = wp_get_post_autosave( $changeset_post_id, get_current_user_id() );
1166                  if ( $autosave_post ) {
1167                      $data = $this->get_changeset_post_data( $autosave_post->ID );
1168                      if ( ! is_wp_error( $data ) ) {
1169                          $this->_changeset_data = $data;
1170                      }
1171                  }
1172              }
1173  
1174              // Load data from the changeset if it was not loaded from an autosave.
1175              if ( ! isset( $this->_changeset_data ) ) {
1176                  $data = $this->get_changeset_post_data( $changeset_post_id );
1177                  if ( ! is_wp_error( $data ) ) {
1178                      $this->_changeset_data = $data;
1179                  } else {
1180                      $this->_changeset_data = array();
1181                  }
1182              }
1183          }
1184          return $this->_changeset_data;
1185      }
1186  
1187      /**
1188       * Starter content setting IDs.
1189       *
1190       * @since 4.7.0
1191       * @var array
1192       */
1193      protected $pending_starter_content_settings_ids = array();
1194  
1195      /**
1196       * Imports theme starter content into the customized state.
1197       *
1198       * @since 4.7.0
1199       *
1200       * @param array $starter_content Starter content. Defaults to `get_theme_starter_content()`.
1201       */
1202  	public function import_theme_starter_content( $starter_content = array() ) {
1203          if ( empty( $starter_content ) ) {
1204              $starter_content = get_theme_starter_content();
1205          }
1206  
1207          $changeset_data = array();
1208          if ( $this->changeset_post_id() ) {
1209              /*
1210               * Don't re-import starter content into a changeset saved persistently.
1211               * This will need to be revisited in the future once theme switching
1212               * is allowed with drafted/scheduled changesets, since switching to
1213               * another theme could result in more starter content being applied.
1214               * However, when doing an explicit save it is currently possible for
1215               * nav menus and nav menu items specifically to lose their starter_content
1216               * flags, thus resulting in duplicates being created since they fail
1217               * to get re-used. See #40146.
1218               */
1219              if ( 'auto-draft' !== get_post_status( $this->changeset_post_id() ) ) {
1220                  return;
1221              }
1222  
1223              $changeset_data = $this->get_changeset_post_data( $this->changeset_post_id() );
1224          }
1225  
1226          $sidebars_widgets = isset( $starter_content['widgets'] ) && ! empty( $this->widgets ) ? $starter_content['widgets'] : array();
1227          $attachments      = isset( $starter_content['attachments'] ) && ! empty( $this->nav_menus ) ? $starter_content['attachments'] : array();
1228          $posts            = isset( $starter_content['posts'] ) && ! empty( $this->nav_menus ) ? $starter_content['posts'] : array();
1229          $options          = isset( $starter_content['options'] ) ? $starter_content['options'] : array();
1230          $nav_menus        = isset( $starter_content['nav_menus'] ) && ! empty( $this->nav_menus ) ? $starter_content['nav_menus'] : array();
1231          $theme_mods       = isset( $starter_content['theme_mods'] ) ? $starter_content['theme_mods'] : array();
1232  
1233          // Widgets.
1234          $max_widget_numbers = array();
1235          foreach ( $sidebars_widgets as $sidebar_id => $widgets ) {
1236              $sidebar_widget_ids = array();
1237              foreach ( $widgets as $widget ) {
1238                  list( $id_base, $instance ) = $widget;
1239  
1240                  if ( ! isset( $max_widget_numbers[ $id_base ] ) ) {
1241  
1242                      // When $settings is an array-like object, get an intrinsic array for use with array_keys().
1243                      $settings = get_option( "widget_{$id_base}", array() );
1244                      if ( $settings instanceof ArrayObject || $settings instanceof ArrayIterator ) {
1245                          $settings = $settings->getArrayCopy();
1246                      }
1247  
1248                      unset( $settings['_multiwidget'] );
1249  
1250                      // Find the max widget number for this type.
1251                      $widget_numbers = array_keys( $settings );
1252                      if ( count( $widget_numbers ) > 0 ) {
1253                          $widget_numbers[]               = 1;
1254                          $max_widget_numbers[ $id_base ] = max( ...$widget_numbers );
1255                      } else {
1256                          $max_widget_numbers[ $id_base ] = 1;
1257                      }
1258                  }
1259                  $max_widget_numbers[ $id_base ] += 1;
1260  
1261                  $widget_id  = sprintf( '%s-%d', $id_base, $max_widget_numbers[ $id_base ] );
1262                  $setting_id = sprintf( 'widget_%s[%d]', $id_base, $max_widget_numbers[ $id_base ] );
1263  
1264                  $setting_value = $this->widgets->sanitize_widget_js_instance( $instance );
1265                  if ( empty( $changeset_data[ $setting_id ] ) || ! empty( $changeset_data[ $setting_id ]['starter_content'] ) ) {
1266                      $this->set_post_value( $setting_id, $setting_value );
1267                      $this->pending_starter_content_settings_ids[] = $setting_id;
1268                  }
1269                  $sidebar_widget_ids[] = $widget_id;
1270              }
1271  
1272              $setting_id = sprintf( 'sidebars_widgets[%s]', $sidebar_id );
1273              if ( empty( $changeset_data[ $setting_id ] ) || ! empty( $changeset_data[ $setting_id ]['starter_content'] ) ) {
1274                  $this->set_post_value( $setting_id, $sidebar_widget_ids );
1275                  $this->pending_starter_content_settings_ids[] = $setting_id;
1276              }
1277          }
1278  
1279          $starter_content_auto_draft_post_ids = array();
1280          if ( ! empty( $changeset_data['nav_menus_created_posts']['value'] ) ) {
1281              $starter_content_auto_draft_post_ids = array_merge( $starter_content_auto_draft_post_ids, $changeset_data['nav_menus_created_posts']['value'] );
1282          }
1283  
1284          // Make an index of all the posts needed and what their slugs are.
1285          $needed_posts = array();
1286          $attachments  = $this->prepare_starter_content_attachments( $attachments );
1287          foreach ( $attachments as $attachment ) {
1288              $key                  = 'attachment:' . $attachment['post_name'];
1289              $needed_posts[ $key ] = true;
1290          }
1291          foreach ( array_keys( $posts ) as $post_symbol ) {
1292              if ( empty( $posts[ $post_symbol ]['post_name'] ) && empty( $posts[ $post_symbol ]['post_title'] ) ) {
1293                  unset( $posts[ $post_symbol ] );
1294                  continue;
1295              }
1296              if ( empty( $posts[ $post_symbol ]['post_name'] ) ) {
1297                  $posts[ $post_symbol ]['post_name'] = sanitize_title( $posts[ $post_symbol ]['post_title'] );
1298              }
1299              if ( empty( $posts[ $post_symbol ]['post_type'] ) ) {
1300                  $posts[ $post_symbol ]['post_type'] = 'post';
1301              }
1302              $needed_posts[ $posts[ $post_symbol ]['post_type'] . ':' . $posts[ $post_symbol ]['post_name'] ] = true;
1303          }
1304          $all_post_slugs = array_merge(
1305              wp_list_pluck( $attachments, 'post_name' ),
1306              wp_list_pluck( $posts, 'post_name' )
1307          );
1308  
1309          /*
1310           * Obtain all post types referenced in starter content to use in query.
1311           * This is needed because 'any' will not account for post types not yet registered.
1312           */
1313          $post_types = array_filter( array_merge( array( 'attachment' ), wp_list_pluck( $posts, 'post_type' ) ) );
1314  
1315          // Re-use auto-draft starter content posts referenced in the current customized state.
1316          $existing_starter_content_posts = array();
1317          if ( ! empty( $starter_content_auto_draft_post_ids ) ) {
1318              $existing_posts_query = new WP_Query(
1319                  array(
1320                      'post__in'       => $starter_content_auto_draft_post_ids,
1321                      'post_status'    => 'auto-draft',
1322                      'post_type'      => $post_types,
1323                      'posts_per_page' => -1,
1324                  )
1325              );
1326              foreach ( $existing_posts_query->posts as $existing_post ) {
1327                  $post_name = $existing_post->post_name;
1328                  if ( empty( $post_name ) ) {
1329                      $post_name = get_post_meta( $existing_post->ID, '_customize_draft_post_name', true );
1330                  }
1331                  $existing_starter_content_posts[ $existing_post->post_type . ':' . $post_name ] = $existing_post;
1332              }
1333          }
1334  
1335          // Re-use non-auto-draft posts.
1336          if ( ! empty( $all_post_slugs ) ) {
1337              $existing_posts_query = new WP_Query(
1338                  array(
1339                      'post_name__in'  => $all_post_slugs,
1340                      'post_status'    => array_diff( get_post_stati(), array( 'auto-draft' ) ),
1341                      'post_type'      => 'any',
1342                      'posts_per_page' => -1,
1343                  )
1344              );
1345              foreach ( $existing_posts_query->posts as $existing_post ) {
1346                  $key = $existing_post->post_type . ':' . $existing_post->post_name;
1347                  if ( isset( $needed_posts[ $key ] ) && ! isset( $existing_starter_content_posts[ $key ] ) ) {
1348                      $existing_starter_content_posts[ $key ] = $existing_post;
1349                  }
1350              }
1351          }
1352  
1353          // Attachments are technically posts but handled differently.
1354          if ( ! empty( $attachments ) ) {
1355  
1356              $attachment_ids = array();
1357  
1358              foreach ( $attachments as $symbol => $attachment ) {
1359                  $file_array    = array(
1360                      'name' => $attachment['file_name'],
1361                  );
1362                  $file_path     = $attachment['file_path'];
1363                  $attachment_id = null;
1364                  $attached_file = null;
1365                  if ( isset( $existing_starter_content_posts[ 'attachment:' . $attachment['post_name'] ] ) ) {
1366                      $attachment_post = $existing_starter_content_posts[ 'attachment:' . $attachment['post_name'] ];
1367                      $attachment_id   = $attachment_post->ID;
1368                      $attached_file   = get_attached_file( $attachment_id );
1369                      if ( empty( $attached_file ) || ! file_exists( $attached_file ) ) {
1370                          $attachment_id = null;
1371                          $attached_file = null;
1372                      } elseif ( $this->get_stylesheet() !== get_post_meta( $attachment_post->ID, '_starter_content_theme', true ) ) {
1373  
1374                          // Re-generate attachment metadata since it was previously generated for a different theme.
1375                          $metadata = wp_generate_attachment_metadata( $attachment_post->ID, $attached_file );
1376                          wp_update_attachment_metadata( $attachment_id, $metadata );
1377                          update_post_meta( $attachment_id, '_starter_content_theme', $this->get_stylesheet() );
1378                      }
1379                  }
1380  
1381                  // Insert the attachment auto-draft because it doesn't yet exist or the attached file is gone.
1382                  if ( ! $attachment_id ) {
1383  
1384                      // Copy file to temp location so that original file won't get deleted from theme after sideloading.
1385                      $temp_file_name = wp_tempnam( wp_basename( $file_path ) );
1386                      if ( $temp_file_name && copy( $file_path, $temp_file_name ) ) {
1387                          $file_array['tmp_name'] = $temp_file_name;
1388                      }
1389                      if ( empty( $file_array['tmp_name'] ) ) {
1390                          continue;
1391                      }
1392  
1393                      $attachment_post_data = array_merge(
1394                          wp_array_slice_assoc( $attachment, array( 'post_title', 'post_content', 'post_excerpt' ) ),
1395                          array(
1396                              'post_status' => 'auto-draft', // So attachment will be garbage collected in a week if changeset is never published.
1397                          )
1398                      );
1399  
1400                      $attachment_id = media_handle_sideload( $file_array, 0, null, $attachment_post_data );
1401                      if ( is_wp_error( $attachment_id ) ) {
1402                          continue;
1403                      }
1404                      update_post_meta( $attachment_id, '_starter_content_theme', $this->get_stylesheet() );
1405                      update_post_meta( $attachment_id, '_customize_draft_post_name', $attachment['post_name'] );
1406                  }
1407  
1408                  $attachment_ids[ $symbol ] = $attachment_id;
1409              }
1410              $starter_content_auto_draft_post_ids = array_merge( $starter_content_auto_draft_post_ids, array_values( $attachment_ids ) );
1411          }
1412  
1413          // Posts & pages.
1414          if ( ! empty( $posts ) ) {
1415              foreach ( array_keys( $posts ) as $post_symbol ) {
1416                  if ( empty( $posts[ $post_symbol ]['post_type'] ) || empty( $posts[ $post_symbol ]['post_name'] ) ) {
1417                      continue;
1418                  }
1419                  $post_type = $posts[ $post_symbol ]['post_type'];
1420                  if ( ! empty( $posts[ $post_symbol ]['post_name'] ) ) {
1421                      $post_name = $posts[ $post_symbol ]['post_name'];
1422                  } elseif ( ! empty( $posts[ $post_symbol ]['post_title'] ) ) {
1423                      $post_name = sanitize_title( $posts[ $post_symbol ]['post_title'] );
1424                  } else {
1425                      continue;
1426                  }
1427  
1428                  // Use existing auto-draft post if one already exists with the same type and name.
1429                  if ( isset( $existing_starter_content_posts[ $post_type . ':' . $post_name ] ) ) {
1430                      $posts[ $post_symbol ]['ID'] = $existing_starter_content_posts[ $post_type . ':' . $post_name ]->ID;
1431                      continue;
1432                  }
1433  
1434                  // Translate the featured image symbol.
1435                  if ( ! empty( $posts[ $post_symbol ]['thumbnail'] )
1436                      && preg_match( '/^{{(?P<symbol>.+)}}$/', $posts[ $post_symbol ]['thumbnail'], $matches )
1437                      && isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1438                      $posts[ $post_symbol ]['meta_input']['_thumbnail_id'] = $attachment_ids[ $matches['symbol'] ];
1439                  }
1440  
1441                  if ( ! empty( $posts[ $post_symbol ]['template'] ) ) {
1442                      $posts[ $post_symbol ]['meta_input']['_wp_page_template'] = $posts[ $post_symbol ]['template'];
1443                  }
1444  
1445                  $r = $this->nav_menus->insert_auto_draft_post( $posts[ $post_symbol ] );
1446                  if ( $r instanceof WP_Post ) {
1447                      $posts[ $post_symbol ]['ID'] = $r->ID;
1448                  }
1449              }
1450  
1451              $starter_content_auto_draft_post_ids = array_merge( $starter_content_auto_draft_post_ids, wp_list_pluck( $posts, 'ID' ) );
1452          }
1453  
1454          // The nav_menus_created_posts setting is why nav_menus component is dependency for adding posts.
1455          if ( ! empty( $this->nav_menus ) && ! empty( $starter_content_auto_draft_post_ids ) ) {
1456              $setting_id = 'nav_menus_created_posts';
1457              $this->set_post_value( $setting_id, array_unique( array_values( $starter_content_auto_draft_post_ids ) ) );
1458              $this->pending_starter_content_settings_ids[] = $setting_id;
1459          }
1460  
1461          // Nav menus.
1462          $placeholder_id              = -1;
1463          $reused_nav_menu_setting_ids = array();
1464          foreach ( $nav_menus as $nav_menu_location => $nav_menu ) {
1465  
1466              $nav_menu_term_id    = null;
1467              $nav_menu_setting_id = null;
1468              $matches             = array();
1469  
1470              // Look for an existing placeholder menu with starter content to re-use.
1471              foreach ( $changeset_data as $setting_id => $setting_params ) {
1472                  $can_reuse = (
1473                      ! empty( $setting_params['starter_content'] )
1474                      &&
1475                      ! in_array( $setting_id, $reused_nav_menu_setting_ids, true )
1476                      &&
1477                      preg_match( '#^nav_menu\[(?P<nav_menu_id>-?\d+)\]$#', $setting_id, $matches )
1478                  );
1479                  if ( $can_reuse ) {
1480                      $nav_menu_term_id              = (int) $matches['nav_menu_id'];
1481                      $nav_menu_setting_id           = $setting_id;
1482                      $reused_nav_menu_setting_ids[] = $setting_id;
1483                      break;
1484                  }
1485              }
1486  
1487              if ( ! $nav_menu_term_id ) {
1488                  while ( isset( $changeset_data[ sprintf( 'nav_menu[%d]', $placeholder_id ) ] ) ) {
1489                      --$placeholder_id;
1490                  }
1491                  $nav_menu_term_id    = $placeholder_id;
1492                  $nav_menu_setting_id = sprintf( 'nav_menu[%d]', $placeholder_id );
1493              }
1494  
1495              $this->set_post_value(
1496                  $nav_menu_setting_id,
1497                  array(
1498                      'name' => isset( $nav_menu['name'] ) ? $nav_menu['name'] : $nav_menu_location,
1499                  )
1500              );
1501              $this->pending_starter_content_settings_ids[] = $nav_menu_setting_id;
1502  
1503              // @todo Add support for menu_item_parent.
1504              $position = 0;
1505              foreach ( $nav_menu['items'] as $nav_menu_item ) {
1506                  $nav_menu_item_setting_id = sprintf( 'nav_menu_item[%d]', $placeholder_id-- );
1507                  if ( ! isset( $nav_menu_item['position'] ) ) {
1508                      $nav_menu_item['position'] = $position++;
1509                  }
1510                  $nav_menu_item['nav_menu_term_id'] = $nav_menu_term_id;
1511  
1512                  if ( isset( $nav_menu_item['object_id'] ) ) {
1513                      if ( 'post_type' === $nav_menu_item['type'] && preg_match( '/^{{(?P<symbol>.+)}}$/', $nav_menu_item['object_id'], $matches ) && isset( $posts[ $matches['symbol'] ] ) ) {
1514                          $nav_menu_item['object_id'] = $posts[ $matches['symbol'] ]['ID'];
1515                          if ( empty( $nav_menu_item['title'] ) ) {
1516                              $original_object        = get_post( $nav_menu_item['object_id'] );
1517                              $nav_menu_item['title'] = $original_object->post_title;
1518                          }
1519                      } else {
1520                          continue;
1521                      }
1522                  } else {
1523                      $nav_menu_item['object_id'] = 0;
1524                  }
1525  
1526                  if ( empty( $changeset_data[ $nav_menu_item_setting_id ] ) || ! empty( $changeset_data[ $nav_menu_item_setting_id ]['starter_content'] ) ) {
1527                      $this->set_post_value( $nav_menu_item_setting_id, $nav_menu_item );
1528                      $this->pending_starter_content_settings_ids[] = $nav_menu_item_setting_id;
1529                  }
1530              }
1531  
1532              $setting_id = sprintf( 'nav_menu_locations[%s]', $nav_menu_location );
1533              if ( empty( $changeset_data[ $setting_id ] ) || ! empty( $changeset_data[ $setting_id ]['starter_content'] ) ) {
1534                  $this->set_post_value( $setting_id, $nav_menu_term_id );
1535                  $this->pending_starter_content_settings_ids[] = $setting_id;
1536              }
1537          }
1538  
1539          // Options.
1540          foreach ( $options as $name => $value ) {
1541  
1542              // Serialize the value to check for post symbols.
1543              $value = maybe_serialize( $value );
1544  
1545              if ( is_serialized( $value ) ) {
1546                  if ( preg_match( '/s:\d+:"{{(?P<symbol>.+)}}"/', $value, $matches ) ) {
1547                      if ( isset( $posts[ $matches['symbol'] ] ) ) {
1548                          $symbol_match = $posts[ $matches['symbol'] ]['ID'];
1549                      } elseif ( isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1550                          $symbol_match = $attachment_ids[ $matches['symbol'] ];
1551                      }
1552  
1553                      // If we have any symbol matches, update the values.
1554                      if ( isset( $symbol_match ) ) {
1555                          // Replace found string matches with post IDs.
1556                          $value = str_replace( $matches[0], "i:{$symbol_match}", $value );
1557                      } else {
1558                          continue;
1559                      }
1560                  }
1561              } elseif ( preg_match( '/^{{(?P<symbol>.+)}}$/', $value, $matches ) ) {
1562                  if ( isset( $posts[ $matches['symbol'] ] ) ) {
1563                      $value = $posts[ $matches['symbol'] ]['ID'];
1564                  } elseif ( isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1565                      $value = $attachment_ids[ $matches['symbol'] ];
1566                  } else {
1567                      continue;
1568                  }
1569              }
1570  
1571              // Unserialize values after checking for post symbols, so they can be properly referenced.
1572              $value = maybe_unserialize( $value );
1573  
1574              if ( empty( $changeset_data[ $name ] ) || ! empty( $changeset_data[ $name ]['starter_content'] ) ) {
1575                  $this->set_post_value( $name, $value );
1576                  $this->pending_starter_content_settings_ids[] = $name;
1577              }
1578          }
1579  
1580          // Theme mods.
1581          foreach ( $theme_mods as $name => $value ) {
1582  
1583              // Serialize the value to check for post symbols.
1584              $value = maybe_serialize( $value );
1585  
1586              // Check if value was serialized.
1587              if ( is_serialized( $value ) ) {
1588                  if ( preg_match( '/s:\d+:"{{(?P<symbol>.+)}}"/', $value, $matches ) ) {
1589                      if ( isset( $posts[ $matches['symbol'] ] ) ) {
1590                          $symbol_match = $posts[ $matches['symbol'] ]['ID'];
1591                      } elseif ( isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1592                          $symbol_match = $attachment_ids[ $matches['symbol'] ];
1593                      }
1594  
1595                      // If we have any symbol matches, update the values.
1596                      if ( isset( $symbol_match ) ) {
1597                          // Replace found string matches with post IDs.
1598                          $value = str_replace( $matches[0], "i:{$symbol_match}", $value );
1599                      } else {
1600                          continue;
1601                      }
1602                  }
1603              } elseif ( preg_match( '/^{{(?P<symbol>.+)}}$/', $value, $matches ) ) {
1604                  if ( isset( $posts[ $matches['symbol'] ] ) ) {
1605                      $value = $posts[ $matches['symbol'] ]['ID'];
1606                  } elseif ( isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1607                      $value = $attachment_ids[ $matches['symbol'] ];
1608                  } else {
1609                      continue;
1610                  }
1611              }
1612  
1613              // Unserialize values after checking for post symbols, so they can be properly referenced.
1614              $value = maybe_unserialize( $value );
1615  
1616              // Handle header image as special case since setting has a legacy format.
1617              if ( 'header_image' === $name ) {
1618                  $name     = 'header_image_data';
1619                  $metadata = wp_get_attachment_metadata( $value );
1620                  if ( empty( $metadata ) ) {
1621                      continue;
1622                  }
1623                  $value = array(
1624                      'attachment_id' => $value,
1625                      'url'           => wp_get_attachment_url( $value ),
1626                      'height'        => $metadata['height'],
1627                      'width'         => $metadata['width'],
1628                  );
1629              } elseif ( 'background_image' === $name ) {
1630                  $value = wp_get_attachment_url( $value );
1631              }
1632  
1633              if ( empty( $changeset_data[ $name ] ) || ! empty( $changeset_data[ $name ]['starter_content'] ) ) {
1634                  $this->set_post_value( $name, $value );
1635                  $this->pending_starter_content_settings_ids[] = $name;
1636              }
1637          }
1638  
1639          if ( ! empty( $this->pending_starter_content_settings_ids ) ) {
1640              if ( did_action( 'customize_register' ) ) {
1641                  $this->_save_starter_content_changeset();
1642              } else {
1643                  add_action( 'customize_register', array( $this, '_save_starter_content_changeset' ), 1000 );
1644              }
1645          }
1646      }
1647  
1648      /**
1649       * Prepares starter content attachments.
1650       *
1651       * Ensure that the attachments are valid and that they have slugs and file name/path.
1652       *
1653       * @since 4.7.0
1654       *
1655       * @param array $attachments Attachments.
1656       * @return array Prepared attachments.
1657       */
1658  	protected function prepare_starter_content_attachments( $attachments ) {
1659          $prepared_attachments = array();
1660          if ( empty( $attachments ) ) {
1661              return $prepared_attachments;
1662          }
1663  
1664          // Such is The WordPress Way.
1665          require_once  ABSPATH . 'wp-admin/includes/file.php';
1666          require_once  ABSPATH . 'wp-admin/includes/media.php';
1667          require_once  ABSPATH . 'wp-admin/includes/image.php';
1668  
1669          foreach ( $attachments as $symbol => $attachment ) {
1670  
1671              // A file is required and URLs to files are not currently allowed.
1672              if ( empty( $attachment['file'] ) || preg_match( '#^https?://$#', $attachment['file'] ) ) {
1673                  continue;
1674              }
1675  
1676              $file_path = null;
1677              if ( file_exists( $attachment['file'] ) ) {
1678                  $file_path = $attachment['file']; // Could be absolute path to file in plugin.
1679              } elseif ( is_child_theme() && file_exists( get_stylesheet_directory() . '/' . $attachment['file'] ) ) {
1680                  $file_path = get_stylesheet_directory() . '/' . $attachment['file'];
1681              } elseif ( file_exists( get_template_directory() . '/' . $attachment['file'] ) ) {
1682                  $file_path = get_template_directory() . '/' . $attachment['file'];
1683              } else {
1684                  continue;
1685              }
1686              $file_name = wp_basename( $attachment['file'] );
1687  
1688              // Skip file types that are not recognized.
1689              $checked_filetype = wp_check_filetype( $file_name );
1690              if ( empty( $checked_filetype['type'] ) ) {
1691                  continue;
1692              }
1693  
1694              // Ensure post_name is set since not automatically derived from post_title for new auto-draft posts.
1695              if ( empty( $attachment['post_name'] ) ) {
1696                  if ( ! empty( $attachment['post_title'] ) ) {
1697                      $attachment['post_name'] = sanitize_title( $attachment['post_title'] );
1698                  } else {
1699                      $attachment['post_name'] = sanitize_title( preg_replace( '/\.\w+$/', '', $file_name ) );
1700                  }
1701              }
1702  
1703              $attachment['file_name']         = $file_name;
1704              $attachment['file_path']         = $file_path;
1705              $prepared_attachments[ $symbol ] = $attachment;
1706          }
1707          return $prepared_attachments;
1708      }
1709  
1710      /**
1711       * Saves starter content changeset.
1712       *
1713       * @since 4.7.0
1714       */
1715  	public function _save_starter_content_changeset() {
1716  
1717          if ( empty( $this->pending_starter_content_settings_ids ) ) {
1718              return;
1719          }
1720  
1721          $this->save_changeset_post(
1722              array(
1723                  'data'            => array_fill_keys( $this->pending_starter_content_settings_ids, array( 'starter_content' => true ) ),
1724                  'starter_content' => true,
1725              )
1726          );
1727          $this->saved_starter_content_changeset = true;
1728  
1729          $this->pending_starter_content_settings_ids = array();
1730      }
1731  
1732      /**
1733       * Gets dirty pre-sanitized setting values in the current customized state.
1734       *
1735       * The returned array consists of a merge of three sources:
1736       * 1. If the theme is not currently active, then the base array is any stashed
1737       *    theme mods that were modified previously but never published.
1738       * 2. The values from the current changeset, if it exists.
1739       * 3. If the user can customize, the values parsed from the incoming
1740       *    `$_POST['customized']` JSON data.
1741       * 4. Any programmatically-set post values via `WP_Customize_Manager::set_post_value()`.
1742       *
1743       * The name "unsanitized_post_values" is a carry-over from when the customized
1744       * state was exclusively sourced from `$_POST['customized']`. Nevertheless,
1745       * the value returned will come from the current changeset post and from the
1746       * incoming post data.
1747       *
1748       * @since 4.1.1
1749       * @since 4.7.0 Added `$args` parameter and merging with changeset values and stashed theme mods.
1750       *
1751       * @param array $args {
1752       *     Args.
1753       *
1754       *     @type bool $exclude_changeset Whether the changeset values should also be excluded. Defaults to false.
1755       *     @type bool $exclude_post_data Whether the post input values should also be excluded. Defaults to false when lacking the customize capability.
1756       * }
1757       * @return array
1758       */
1759  	public function unsanitized_post_values( $args = array() ) {
1760          $args = array_merge(
1761              array(
1762                  'exclude_changeset' => false,
1763                  'exclude_post_data' => ! current_user_can( 'customize' ),
1764              ),
1765              $args
1766          );
1767  
1768          $values = array();
1769  
1770          // Let default values be from the stashed theme mods if doing a theme switch and if no changeset is present.
1771          if ( ! $this->is_theme_active() ) {
1772              $stashed_theme_mods = get_option( 'customize_stashed_theme_mods' );
1773              $stylesheet         = $this->get_stylesheet();
1774              if ( isset( $stashed_theme_mods[ $stylesheet ] ) ) {
1775                  $values = array_merge( $values, wp_list_pluck( $stashed_theme_mods[ $stylesheet ], 'value' ) );
1776              }
1777          }
1778  
1779          if ( ! $args['exclude_changeset'] ) {
1780              foreach ( $this->changeset_data() as $setting_id => $setting_params ) {
1781                  if ( ! array_key_exists( 'value', $setting_params ) ) {
1782                      continue;
1783                  }
1784                  if ( isset( $setting_params['type'] ) && 'theme_mod' === $setting_params['type'] ) {
1785  
1786                      // Ensure that theme mods values are only used if they were saved under the active theme.
1787                      $namespace_pattern = '/^(?P<stylesheet>.+?)::(?P<setting_id>.+)$/';
1788                      if ( preg_match( $namespace_pattern, $setting_id, $matches ) && $this->get_stylesheet() === $matches['stylesheet'] ) {
1789                          $values[ $matches['setting_id'] ] = $setting_params['value'];
1790                      }
1791                  } else {
1792                      $values[ $setting_id ] = $setting_params['value'];
1793                  }
1794              }
1795          }
1796  
1797          if ( ! $args['exclude_post_data'] ) {
1798              if ( ! isset( $this->_post_values ) ) {
1799                  if ( isset( $_POST['customized'] ) ) {
1800                      $post_values = json_decode( wp_unslash( $_POST['customized'] ), true );
1801                  } else {
1802                      $post_values = array();
1803                  }
1804                  if ( is_array( $post_values ) ) {
1805                      $this->_post_values = $post_values;
1806                  } else {
1807                      $this->_post_values = array();
1808                  }
1809              }
1810              $values = array_merge( $values, $this->_post_values );
1811          }
1812          return $values;
1813      }
1814  
1815      /**
1816       * Returns the sanitized value for a given setting from the current customized state.
1817       *
1818       * The name "post_value" is a carry-over from when the customized state was exclusively
1819       * sourced from `$_POST['customized']`. Nevertheless, the value returned will come
1820       * from the current changeset post and from the incoming post data.
1821       *
1822       * @since 3.4.0
1823       * @since 4.1.1 Introduced the `$default_value` parameter.
1824       * @since 4.6.0 `$default_value` is now returned early when the setting post value is invalid.
1825       *
1826       * @see WP_REST_Server::dispatch()
1827       * @see WP_REST_Request::sanitize_params()
1828       * @see WP_REST_Request::has_valid_params()
1829       *
1830       * @param WP_Customize_Setting $setting       A WP_Customize_Setting derived object.
1831       * @param mixed                $default_value Value returned if `$setting` has no post value (added in 4.2.0)
1832       *                                            or the post value is invalid (added in 4.6.0).
1833       * @return string|mixed Sanitized value or the `$default_value` provided.
1834       */
1835  	public function post_value( $setting, $default_value = null ) {
1836          $post_values = $this->unsanitized_post_values();
1837          if ( ! array_key_exists( $setting->id, $post_values ) ) {
1838              return $default_value;
1839          }
1840  
1841          $value = $post_values[ $setting->id ];
1842          $valid = $setting->validate( $value );
1843          if ( is_wp_error( $valid ) ) {
1844              return $default_value;
1845          }
1846  
1847          $value = $setting->sanitize( $value );
1848          if ( is_null( $value ) || is_wp_error( $value ) ) {
1849              return $default_value;
1850          }
1851  
1852          return $value;
1853      }
1854  
1855      /**
1856       * Overrides a setting's value in the current customized state.
1857       *
1858       * The name "post_value" is a carry-over from when the customized state was
1859       * exclusively sourced from `$_POST['customized']`.
1860       *
1861       * @since 4.2.0
1862       *
1863       * @param string $setting_id ID for the WP_Customize_Setting instance.
1864       * @param mixed  $value      Post value.
1865       */
1866  	public function set_post_value( $setting_id, $value ) {
1867          $this->unsanitized_post_values(); // Populate _post_values from $_POST['customized'].
1868          $this->_post_values[ $setting_id ] = $value;
1869  
1870          /**
1871           * Announces when a specific setting's unsanitized post value has been set.
1872           *
1873           * Fires when the WP_Customize_Manager::set_post_value() method is called.
1874           *
1875           * The dynamic portion of the hook name, `$setting_id`, refers to the setting ID.
1876           *
1877           * @since 4.4.0
1878           *
1879           * @param mixed                $value   Unsanitized setting post value.
1880           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
1881           */
1882          do_action( "customize_post_value_set_{$setting_id}", $value, $this );
1883  
1884          /**
1885           * Announces when any setting's unsanitized post value has been set.
1886           *
1887           * Fires when the WP_Customize_Manager::set_post_value() method is called.
1888           *
1889           * This is useful for `WP_Customize_Setting` instances to watch
1890           * in order to update a cached previewed value.
1891           *
1892           * @since 4.4.0
1893           *
1894           * @param string               $setting_id Setting ID.
1895           * @param mixed                $value      Unsanitized setting post value.
1896           * @param WP_Customize_Manager $manager    WP_Customize_Manager instance.
1897           */
1898          do_action( 'customize_post_value_set', $setting_id, $value, $this );
1899      }
1900  
1901      /**
1902       * Prints JavaScript settings.
1903       *
1904       * @since 3.4.0
1905       */
1906  	public function customize_preview_init() {
1907  
1908          /*
1909           * Now that Customizer previews are loaded into iframes via GET requests
1910           * and natural URLs with transaction UUIDs added, we need to ensure that
1911           * the responses are never cached by proxies. In practice, this will not
1912           * be needed if the user is logged-in anyway. But if anonymous access is
1913           * allowed then the auth cookies would not be sent and WordPress would
1914           * not send no-cache headers by default.
1915           */
1916          if ( ! headers_sent() ) {
1917              nocache_headers();
1918              header( 'X-Robots: noindex, nofollow, noarchive' );
1919              header( 'X-Robots-Tag: noindex, nofollow, noarchive' );
1920          }
1921          add_filter( 'wp_robots', 'wp_robots_no_robots' );
1922          add_filter( 'wp_headers', array( $this, 'filter_iframe_security_headers' ) );
1923  
1924          /*
1925           * If preview is being served inside the customizer preview iframe, and
1926           * if the user doesn't have customize capability, then it is assumed
1927           * that the user's session has expired and they need to re-authenticate.
1928           */
1929          if ( $this->messenger_channel && ! current_user_can( 'customize' ) ) {
1930              $this->wp_die(
1931                  -1,
1932                  sprintf(
1933                      /* translators: %s: customize_messenger_channel */
1934                      __( 'Unauthorized. You may remove the %s param to preview as frontend.' ),
1935                      '<code>customize_messenger_channel<code>'
1936                  )
1937              );
1938              return;
1939          }
1940  
1941          $this->prepare_controls();
1942  
1943          add_filter( 'wp_redirect', array( $this, 'add_state_query_params' ) );
1944  
1945          wp_enqueue_script( 'customize-preview' );
1946          wp_enqueue_style( 'customize-preview' );
1947          add_action( 'wp_head', array( $this, 'customize_preview_loading_style' ) );
1948          add_action( 'wp_head', array( $this, 'remove_frameless_preview_messenger_channel' ) );
1949          add_action( 'wp_footer', array( $this, 'customize_preview_settings' ), 20 );
1950          add_filter( 'get_edit_post_link', '__return_empty_string' );
1951  
1952          /**
1953           * Fires once the Customizer preview has initialized and JavaScript
1954           * settings have been printed.
1955           *
1956           * @since 3.4.0
1957           *
1958           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
1959           */
1960          do_action( 'customize_preview_init', $this );
1961      }
1962  
1963      /**
1964       * Filters the X-Frame-Options and Content-Security-Policy headers to ensure frontend can load in customizer.
1965       *
1966       * @since 4.7.0
1967       *
1968       * @param array $headers Headers.
1969       * @return array Headers.
1970       */
1971  	public function filter_iframe_security_headers( $headers ) {
1972          $headers['X-Frame-Options']         = 'SAMEORIGIN';
1973          $headers['Content-Security-Policy'] = "frame-ancestors 'self'";
1974          return $headers;
1975      }
1976  
1977      /**
1978       * Adds customize state query params to a given URL if preview is allowed.
1979       *
1980       * @since 4.7.0
1981       *
1982       * @see wp_redirect()
1983       * @see WP_Customize_Manager::get_allowed_url()
1984       *
1985       * @param string $url URL.
1986       * @return string URL.
1987       */
1988  	public function add_state_query_params( $url ) {
1989          $parsed_original_url = wp_parse_url( $url );
1990          $is_allowed          = false;
1991          foreach ( $this->get_allowed_urls() as $allowed_url ) {
1992              $parsed_allowed_url = wp_parse_url( $allowed_url );
1993              $is_allowed         = (
1994                  $parsed_allowed_url['scheme'] === $parsed_original_url['scheme']
1995                  &&
1996                  $parsed_allowed_url['host'] === $parsed_original_url['host']
1997                  &&
1998                  str_starts_with( $parsed_original_url['path'], $parsed_allowed_url['path'] )
1999              );
2000              if ( $is_allowed ) {
2001                  break;
2002              }
2003          }
2004  
2005          if ( $is_allowed ) {
2006              $query_params = array(
2007                  'customize_changeset_uuid' => $this->changeset_uuid(),
2008              );
2009              if ( ! $this->is_theme_active() ) {
2010                  $query_params['customize_theme'] = $this->get_stylesheet();
2011              }
2012              if ( $this->messenger_channel ) {
2013                  $query_params['customize_messenger_channel'] = $this->messenger_channel;
2014              }
2015              $url = add_query_arg( $query_params, $url );
2016          }
2017  
2018          return $url;
2019      }
2020  
2021      /**
2022       * Prevents sending a 404 status when returning the response for the customize
2023       * preview, since it causes the jQuery Ajax to fail. Send 200 instead.
2024       *
2025       * @since 4.0.0
2026       * @deprecated 4.7.0
2027       */
2028  	public function customize_preview_override_404_status() {
2029          _deprecated_function( __METHOD__, '4.7.0' );
2030      }
2031  
2032      /**
2033       * Prints base element for preview frame.
2034       *
2035       * @since 3.4.0
2036       * @deprecated 4.7.0
2037       */
2038  	public function customize_preview_base() {
2039          _deprecated_function( __METHOD__, '4.7.0' );
2040      }
2041  
2042      /**
2043       * Prints a workaround to handle HTML5 tags in IE < 9.
2044       *
2045       * @since 3.4.0
2046       * @deprecated 4.7.0 Customizer no longer supports IE8, so all supported browsers recognize HTML5.
2047       */
2048  	public function customize_preview_html5() {
2049          _deprecated_function( __FUNCTION__, '4.7.0' );
2050      }
2051  
2052      /**
2053       * Prints CSS for loading indicators for the Customizer preview.
2054       *
2055       * @since 4.2.0
2056       */
2057  	public function customize_preview_loading_style() {
2058          ?>
2059          <style>
2060              body.wp-customizer-unloading {
2061                  opacity: 0.25;
2062                  cursor: progress !important;
2063                  -webkit-transition: opacity 0.5s;
2064                  transition: opacity 0.5s;
2065              }
2066              body.wp-customizer-unloading * {
2067                  pointer-events: none !important;
2068              }
2069              form.customize-unpreviewable,
2070              form.customize-unpreviewable input,
2071              form.customize-unpreviewable select,
2072              form.customize-unpreviewable button,
2073              a.customize-unpreviewable,
2074              area.customize-unpreviewable {
2075                  cursor: not-allowed !important;
2076              }
2077          </style>
2078          <?php
2079      }
2080  
2081      /**
2082       * Removes customize_messenger_channel query parameter from the preview window when it is not in an iframe.
2083       *
2084       * This ensures that the admin bar will be shown. It also ensures that link navigation will
2085       * work as expected since the parent frame is not being sent the URL to navigate to.
2086       *
2087       * @since 4.7.0
2088       */
2089  	public function remove_frameless_preview_messenger_channel() {
2090          if ( ! $this->messenger_channel ) {
2091              return;
2092          }
2093          ob_start();
2094          ?>
2095          <script>
2096          ( function() {
2097              if ( parent !== window ) {
2098                  return;
2099              }
2100              const url = new URL( location.href );
2101              if ( url.searchParams.has( 'customize_messenger_channel' ) ) {
2102                  url.searchParams.delete( 'customize_messenger_channel' );
2103                  location.replace( url );
2104              }
2105          } )();
2106          </script>
2107          <?php
2108          wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
2109      }
2110  
2111      /**
2112       * Prints JavaScript settings for preview frame.
2113       *
2114       * @since 3.4.0
2115       */
2116  	public function customize_preview_settings() {
2117          $post_values                 = $this->unsanitized_post_values( array( 'exclude_changeset' => true ) );
2118          $setting_validities          = $this->validate_setting_values( $post_values );
2119          $exported_setting_validities = array_map( array( $this, 'prepare_setting_validity_for_js' ), $setting_validities );
2120  
2121          // Note that the REQUEST_URI is not passed into home_url() since this breaks subdirectory installations.
2122          $self_url           = empty( $_SERVER['REQUEST_URI'] ) ? home_url( '/' ) : sanitize_url( wp_unslash( $_SERVER['REQUEST_URI'] ) );
2123          $state_query_params = array(
2124              'customize_theme',
2125              'customize_changeset_uuid',
2126              'customize_messenger_channel',
2127          );
2128          $self_url           = remove_query_arg( $state_query_params, $self_url );
2129  
2130          $allowed_urls  = $this->get_allowed_urls();
2131          $allowed_hosts = array();
2132          foreach ( $allowed_urls as $allowed_url ) {
2133              $parsed = wp_parse_url( $allowed_url );
2134              if ( empty( $parsed['host'] ) ) {
2135                  continue;
2136              }
2137              $host = $parsed['host'];
2138              if ( ! empty( $parsed['port'] ) ) {
2139                  $host .= ':' . $parsed['port'];
2140              }
2141              $allowed_hosts[] = $host;
2142          }
2143  
2144          $switched_locale = switch_to_user_locale( get_current_user_id() );
2145          $l10n            = array(
2146              'shiftClickToEdit'  => __( 'Shift-click to edit this element.' ),
2147              'linkUnpreviewable' => __( 'This link is not live-previewable.' ),
2148              'formUnpreviewable' => __( 'This form is not live-previewable.' ),
2149          );
2150          if ( $switched_locale ) {
2151              restore_previous_locale();
2152          }
2153  
2154          $settings = array(
2155              'changeset'         => array(
2156                  'uuid'      => $this->changeset_uuid(),
2157                  'autosaved' => $this->autosaved(),
2158              ),
2159              'timeouts'          => array(
2160                  'selectiveRefresh' => 250,
2161                  'keepAliveSend'    => 1000,
2162              ),
2163              'theme'             => array(
2164                  'stylesheet'   => $this->get_stylesheet(),
2165                  'active'       => $this->is_theme_active(),
2166                  'isBlockTheme' => wp_is_block_theme(),
2167              ),
2168              'url'               => array(
2169                  'self'          => $self_url,
2170                  'allowed'       => array_map( 'sanitize_url', $this->get_allowed_urls() ),
2171                  'allowedHosts'  => array_unique( $allowed_hosts ),
2172                  'isCrossDomain' => $this->is_cross_domain(),
2173              ),
2174              'channel'           => $this->messenger_channel,
2175              'activePanels'      => array(),
2176              'activeSections'    => array(),
2177              'activeControls'    => array(),
2178              'settingValidities' => $exported_setting_validities,
2179              'nonce'             => current_user_can( 'customize' ) ? $this->get_nonces() : array(),
2180              'l10n'              => $l10n,
2181              '_dirty'            => array_keys( $post_values ),
2182          );
2183  
2184          foreach ( $this->panels as $panel_id => $panel ) {
2185              if ( $panel->check_capabilities() ) {
2186                  $settings['activePanels'][ $panel_id ] = $panel->active();
2187                  foreach ( $panel->sections as $section_id => $section ) {
2188                      if ( $section->check_capabilities() ) {
2189                          $settings['activeSections'][ $section_id ] = $section->active();
2190                      }
2191                  }
2192              }
2193          }
2194          foreach ( $this->sections as $id => $section ) {
2195              if ( $section->check_capabilities() ) {
2196                  $settings['activeSections'][ $id ] = $section->active();
2197              }
2198          }
2199          foreach ( $this->controls as $id => $control ) {
2200              if ( $control->check_capabilities() ) {
2201                  $settings['activeControls'][ $id ] = $control->active();
2202              }
2203          }
2204  
2205          ob_start();
2206          ?>
2207          <script>
2208              var _wpCustomizeSettings = <?php echo wp_json_encode( $settings ); ?>;
2209              _wpCustomizeSettings.values = {};
2210              (function( v ) {
2211                  <?php
2212                  /*
2213                   * Serialize settings separately from the initial _wpCustomizeSettings
2214                   * serialization in order to avoid a peak memory usage spike.
2215                   * @todo We may not even need to export the values at all since the pane syncs them anyway.
2216                   */
2217                  foreach ( $this->settings as $id => $setting ) {
2218                      if ( $setting->check_capabilities() ) {
2219                          printf(
2220                              "v[%s] = %s;\n",
2221                              wp_json_encode( $id ),
2222                              wp_json_encode( $setting->js_value() )
2223                          );
2224                      }
2225                  }
2226                  ?>
2227              })( _wpCustomizeSettings.values );
2228          </script>
2229          <?php
2230          wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
2231      }
2232  
2233      /**
2234       * Prints a signature so we can ensure the Customizer was properly executed.
2235       *
2236       * @since 3.4.0
2237       * @deprecated 4.7.0
2238       */
2239  	public function customize_preview_signature() {
2240          _deprecated_function( __METHOD__, '4.7.0' );
2241      }
2242  
2243      /**
2244       * Removes the signature in case we experience a case where the Customizer was not properly executed.
2245       *
2246       * @since 3.4.0
2247       * @deprecated 4.7.0
2248       *
2249       * @param callable|null $callback Optional. Value passed through for {@see 'wp_die_handler'} filter.
2250       *                                Default null.
2251       * @return callable|null Value passed through for {@see 'wp_die_handler'} filter.
2252       */
2253  	public function remove_preview_signature( $callback = null ) {
2254          _deprecated_function( __METHOD__, '4.7.0' );
2255  
2256          return $callback;
2257      }
2258  
2259      /**
2260       * Determines whether it is a theme preview or not.
2261       *
2262       * @since 3.4.0
2263       *
2264       * @return bool True if it's a preview, false if not.
2265       */
2266  	public function is_preview() {
2267          return (bool) $this->previewing;
2268      }
2269  
2270      /**
2271       * Retrieves the template name of the previewed theme.
2272       *
2273       * @since 3.4.0
2274       *
2275       * @return string Template name.
2276       */
2277  	public function get_template() {
2278          return $this->theme()->get_template();
2279      }
2280  
2281      /**
2282       * Retrieves the stylesheet name of the previewed theme.
2283       *
2284       * @since 3.4.0
2285       *
2286       * @return string Stylesheet name.
2287       */
2288  	public function get_stylesheet() {
2289          return $this->theme()->get_stylesheet();
2290      }
2291  
2292      /**
2293       * Retrieves the template root of the previewed theme.
2294       *
2295       * @since 3.4.0
2296       *
2297       * @return string Theme root.
2298       */
2299  	public function get_template_root() {
2300          return get_raw_theme_root( $this->get_template(), true );
2301      }
2302  
2303      /**
2304       * Retrieves the stylesheet root of the previewed theme.
2305       *
2306       * @since 3.4.0
2307       *
2308       * @return string Theme root.
2309       */
2310  	public function get_stylesheet_root() {
2311          return get_raw_theme_root( $this->get_stylesheet(), true );
2312      }
2313  
2314      /**
2315       * Filters the active theme and return the name of the previewed theme.
2316       *
2317       * @since 3.4.0
2318       *
2319       * @param mixed $current_theme {@internal Parameter is not used}
2320       * @return string Theme name.
2321       */
2322  	public function current_theme( $current_theme ) {
2323          return $this->theme()->display( 'Name' );
2324      }
2325  
2326      /**
2327       * Validates setting values.
2328       *
2329       * Validation is skipped for unregistered settings or for values that are
2330       * already null since they will be skipped anyway. Sanitization is applied
2331       * to values that pass validation, and values that become null or `WP_Error`
2332       * after sanitizing are marked invalid.
2333       *
2334       * @since 4.6.0
2335       *
2336       * @see WP_REST_Request::has_valid_params()
2337       * @see WP_Customize_Setting::validate()
2338       *
2339       * @param array $setting_values Mapping of setting IDs to values to validate and sanitize.
2340       * @param array $options {
2341       *     Options.
2342       *
2343       *     @type bool $validate_existence  Whether a setting's existence will be checked.
2344       *     @type bool $validate_capability Whether the setting capability will be checked.
2345       * }
2346       * @return array Mapping of setting IDs to return value of validate method calls, either `true` or `WP_Error`.
2347       */
2348  	public function validate_setting_values( $setting_values, $options = array() ) {
2349          $options = wp_parse_args(
2350              $options,
2351              array(
2352                  'validate_capability' => false,
2353                  'validate_existence'  => false,
2354              )
2355          );
2356  
2357          $validities = array();
2358          foreach ( $setting_values as $setting_id => $unsanitized_value ) {
2359              $setting = $this->get_setting( $setting_id );
2360              if ( ! $setting ) {
2361                  if ( $options['validate_existence'] ) {
2362                      $validities[ $setting_id ] = new WP_Error( 'unrecognized', __( 'Setting does not exist or is unrecognized.' ) );
2363                  }
2364                  continue;
2365              }
2366              if ( $options['validate_capability'] && ! current_user_can( $setting->capability ) ) {
2367                  $validity = new WP_Error( 'unauthorized', __( 'Unauthorized to modify setting due to capability.' ) );
2368              } else {
2369                  if ( is_null( $unsanitized_value ) ) {
2370                      continue;
2371                  }
2372                  $validity = $setting->validate( $unsanitized_value );
2373              }
2374              if ( ! is_wp_error( $validity ) ) {
2375                  /** This filter is documented in wp-includes/class-wp-customize-setting.php */
2376                  $late_validity = apply_filters( "customize_validate_{$setting->id}", new WP_Error(), $unsanitized_value, $setting );
2377                  if ( is_wp_error( $late_validity ) && $late_validity->has_errors() ) {
2378                      $validity = $late_validity;
2379                  }
2380              }
2381              if ( ! is_wp_error( $validity ) ) {
2382                  $value = $setting->sanitize( $unsanitized_value );
2383                  if ( is_null( $value ) ) {
2384                      $validity = false;
2385                  } elseif ( is_wp_error( $value ) ) {
2386                      $validity = $value;
2387                  }
2388              }
2389              if ( false === $validity ) {
2390                  $validity = new WP_Error( 'invalid_value', __( 'Invalid value.' ) );
2391              }
2392              $validities[ $setting_id ] = $validity;
2393          }
2394          return $validities;
2395      }
2396  
2397      /**
2398       * Prepares setting validity for exporting to the client (JS).
2399       *
2400       * Converts `WP_Error` instance into array suitable for passing into the
2401       * `wp.customize.Notification` JS model.
2402       *
2403       * @since 4.6.0
2404       *
2405       * @param true|WP_Error $validity Setting validity.
2406       * @return true|array If `$validity` was a WP_Error, the error codes will be array-mapped
2407       *                    to their respective `message` and `data` to pass into the
2408       *                    `wp.customize.Notification` JS model.
2409       */
2410  	public function prepare_setting_validity_for_js( $validity ) {
2411          if ( is_wp_error( $validity ) ) {
2412              $notification = array();
2413              foreach ( $validity->errors as $error_code => $error_messages ) {
2414                  $notification[ $error_code ] = array(
2415                      'message' => implode( ' ', $error_messages ),
2416                      'data'    => $validity->get_error_data( $error_code ),
2417                  );
2418              }
2419              return $notification;
2420          } else {
2421              return true;
2422          }
2423      }
2424  
2425      /**
2426       * Handles customize_save WP Ajax request to save/update a changeset.
2427       *
2428       * @since 3.4.0
2429       * @since 4.7.0 The semantics of this method have changed to update a changeset, optionally to also change the status and other attributes.
2430       */
2431  	public function save() {
2432          if ( ! is_user_logged_in() ) {
2433              wp_send_json_error( 'unauthenticated' );
2434          }
2435  
2436          if ( ! $this->is_preview() ) {
2437              wp_send_json_error( 'not_preview' );
2438          }
2439  
2440          $action = 'save-customize_' . $this->get_stylesheet();
2441          if ( ! check_ajax_referer( $action, 'nonce', false ) ) {
2442              wp_send_json_error( 'invalid_nonce' );
2443          }
2444  
2445          $changeset_post_id = $this->changeset_post_id();
2446          $is_new_changeset  = empty( $changeset_post_id );
2447          if ( $is_new_changeset ) {
2448              if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->create_posts ) ) {
2449                  wp_send_json_error( 'cannot_create_changeset_post' );
2450              }
2451          } else {
2452              if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id ) ) {
2453                  wp_send_json_error( 'cannot_edit_changeset_post' );
2454              }
2455          }
2456  
2457          if ( ! empty( $_POST['customize_changeset_data'] ) ) {
2458              $input_changeset_data = json_decode( wp_unslash( $_POST['customize_changeset_data'] ), true );
2459              if ( ! is_array( $input_changeset_data ) ) {
2460                  wp_send_json_error( 'invalid_customize_changeset_data' );
2461              }
2462          } else {
2463              $input_changeset_data = array();
2464          }
2465  
2466          // Validate title.
2467          $changeset_title = null;
2468          if ( isset( $_POST['customize_changeset_title'] ) ) {
2469              $changeset_title = sanitize_text_field( wp_unslash( $_POST['customize_changeset_title'] ) );
2470          }
2471  
2472          // Validate changeset status param.
2473          $is_publish       = null;
2474          $changeset_status = null;
2475          if ( isset( $_POST['customize_changeset_status'] ) ) {
2476              $changeset_status = wp_unslash( $_POST['customize_changeset_status'] );
2477              if ( ! get_post_status_object( $changeset_status ) || ! in_array( $changeset_status, array( 'draft', 'pending', 'publish', 'future' ), true ) ) {
2478                  wp_send_json_error( 'bad_customize_changeset_status', 400 );
2479              }
2480              $is_publish = ( 'publish' === $changeset_status || 'future' === $changeset_status );
2481              if ( $is_publish && ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->publish_posts ) ) {
2482                  wp_send_json_error( 'changeset_publish_unauthorized', 403 );
2483              }
2484          }
2485  
2486          /*
2487           * Validate changeset date param. Date is assumed to be in local time for
2488           * the WP if in MySQL format (YYYY-MM-DD HH:MM:SS). Otherwise, the date
2489           * is parsed with strtotime() so that ISO date format may be supplied
2490           * or a string like "+10 minutes".
2491           */
2492          $changeset_date_gmt = null;
2493          if ( isset( $_POST['customize_changeset_date'] ) ) {
2494              $changeset_date = wp_unslash( $_POST['customize_changeset_date'] );
2495              if ( preg_match( '/^\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d$/', $changeset_date ) ) {
2496                  $mm         = substr( $changeset_date, 5, 2 );
2497                  $jj         = substr( $changeset_date, 8, 2 );
2498                  $aa         = substr( $changeset_date, 0, 4 );
2499                  $valid_date = wp_checkdate( $mm, $jj, $aa, $changeset_date );
2500                  if ( ! $valid_date ) {
2501                      wp_send_json_error( 'bad_customize_changeset_date', 400 );
2502                  }
2503                  $changeset_date_gmt = get_gmt_from_date( $changeset_date );
2504              } else {
2505                  $timestamp = strtotime( $changeset_date );
2506                  if ( ! $timestamp ) {
2507                      wp_send_json_error( 'bad_customize_changeset_date', 400 );
2508                  }
2509                  $changeset_date_gmt = gmdate( 'Y-m-d H:i:s', $timestamp );
2510              }
2511          }
2512  
2513          $lock_user_id = null;
2514          $autosave     = ! empty( $_POST['customize_changeset_autosave'] );
2515          if ( ! $is_new_changeset ) {
2516              $lock_user_id = wp_check_post_lock( $this->changeset_post_id() );
2517          }
2518  
2519          // Force request to autosave when changeset is locked.
2520          if ( $lock_user_id && ! $autosave ) {
2521              $autosave           = true;
2522              $changeset_status   = null;
2523              $changeset_date_gmt = null;
2524          }
2525  
2526          if ( $autosave && ! defined( 'DOING_AUTOSAVE' ) ) { // Back-compat.
2527              define( 'DOING_AUTOSAVE', true );
2528          }
2529  
2530          $autosaved = false;
2531          $r         = $this->save_changeset_post(
2532              array(
2533                  'status'   => $changeset_status,
2534                  'title'    => $changeset_title,
2535                  'date_gmt' => $changeset_date_gmt,
2536                  'data'     => $input_changeset_data,
2537                  'autosave' => $autosave,
2538              )
2539          );
2540          if ( $autosave && ! is_wp_error( $r ) ) {
2541              $autosaved = true;
2542          }
2543  
2544          // If the changeset was locked and an autosave request wasn't itself an error, then now explicitly return with a failure.
2545          if ( $lock_user_id && ! is_wp_error( $r ) ) {
2546              $r = new WP_Error(
2547                  'changeset_locked',
2548                  __( 'Changeset is being edited by other user.' ),
2549                  array(
2550                      'lock_user' => $this->get_lock_user_data( $lock_user_id ),
2551                  )
2552              );
2553          }
2554  
2555          if ( is_wp_error( $r ) ) {
2556              $response = array(
2557                  'message' => $r->get_error_message(),
2558                  'code'    => $r->get_error_code(),
2559              );
2560              if ( is_array( $r->get_error_data() ) ) {
2561                  $response = array_merge( $response, $r->get_error_data() );
2562              } else {
2563                  $response['data'] = $r->get_error_data();
2564              }
2565          } else {
2566              $response       = $r;
2567              $changeset_post = get_post( $this->changeset_post_id() );
2568  
2569              // Dismiss all other auto-draft changeset posts for this user (they serve like autosave revisions), as there should only be one.
2570              if ( $is_new_changeset ) {
2571                  $this->dismiss_user_auto_draft_changesets();
2572              }
2573  
2574              // Note that if the changeset status was publish, then it will get set to Trash if revisions are not supported.
2575              $response['changeset_status'] = $changeset_post->post_status;
2576              if ( $is_publish && 'trash' === $response['changeset_status'] ) {
2577                  $response['changeset_status'] = 'publish';
2578              }
2579  
2580              if ( 'publish' !== $response['changeset_status'] ) {
2581                  $this->set_changeset_lock( $changeset_post->ID );
2582              }
2583  
2584              if ( 'future' === $response['changeset_status'] ) {
2585                  $response['changeset_date'] = $changeset_post->post_date;
2586              }
2587  
2588              if ( 'publish' === $response['changeset_status'] || 'trash' === $response['changeset_status'] ) {
2589                  $response['next_changeset_uuid'] = wp_generate_uuid4();
2590              }
2591          }
2592  
2593          if ( $autosave ) {
2594              $response['autosaved'] = $autosaved;
2595          }
2596  
2597          if ( isset( $response['setting_validities'] ) ) {
2598              $response['setting_validities'] = array_map( array( $this, 'prepare_setting_validity_for_js' ), $response['setting_validities'] );
2599          }
2600  
2601          /**
2602           * Filters response data for a successful customize_save Ajax request.
2603           *
2604           * This filter does not apply if there was a nonce or authentication failure.
2605           *
2606           * @since 4.2.0
2607           *
2608           * @param array                $response Additional information passed back to the 'saved'
2609           *                                       event on `wp.customize`.
2610           * @param WP_Customize_Manager $manager  WP_Customize_Manager instance.
2611           */
2612          $response = apply_filters( 'customize_save_response', $response, $this );
2613  
2614          if ( is_wp_error( $r ) ) {
2615              wp_send_json_error( $response );
2616          } else {
2617              wp_send_json_success( $response );
2618          }
2619      }
2620  
2621      /**
2622       * Saves the post for the loaded changeset.
2623       *
2624       * @since 4.7.0
2625       *
2626       * @param array $args {
2627       *     Args for changeset post.
2628       *
2629       *     @type array  $data            Optional additional changeset data. Values will be merged on top of any existing post values.
2630       *     @type string $status          Post status. Optional. If supplied, the save will be transactional and a post revision will be allowed.
2631       *     @type string $title           Post title. Optional.
2632       *     @type string $date_gmt        Date in GMT. Optional.
2633       *     @type int    $user_id         ID for user who is saving the changeset. Optional, defaults to the current user ID.
2634       *     @type bool   $starter_content Whether the data is starter content. If false (default), then $starter_content will be cleared for any $data being saved.
2635       *     @type bool   $autosave        Whether this is a request to create an autosave revision.
2636       * }
2637       *
2638       * @return array|WP_Error Returns array on success and WP_Error with array data on error.
2639       */
2640  	public function save_changeset_post( $args = array() ) {
2641  
2642          $args = array_merge(
2643              array(
2644                  'status'          => null,
2645                  'title'           => null,
2646                  'data'            => array(),
2647                  'date_gmt'        => null,
2648                  'user_id'         => get_current_user_id(),
2649                  'starter_content' => false,
2650                  'autosave'        => false,
2651              ),
2652              $args
2653          );
2654  
2655          $changeset_post_id       = $this->changeset_post_id();
2656          $existing_changeset_data = array();
2657          if ( $changeset_post_id ) {
2658              $existing_status = get_post_status( $changeset_post_id );
2659              if ( 'publish' === $existing_status || 'trash' === $existing_status ) {
2660                  return new WP_Error(
2661                      'changeset_already_published',
2662                      __( 'The previous set of changes has already been published. Please try saving your current set of changes again.' ),
2663                      array(
2664                          'next_changeset_uuid' => wp_generate_uuid4(),
2665                      )
2666                  );
2667              }
2668  
2669              $existing_changeset_data = $this->get_changeset_post_data( $changeset_post_id );
2670              if ( is_wp_error( $existing_changeset_data ) ) {
2671                  return $existing_changeset_data;
2672              }
2673          }
2674  
2675          // Fail if attempting to publish but publish hook is missing.
2676          if ( 'publish' === $args['status'] && false === has_action( 'transition_post_status', '_wp_customize_publish_changeset' ) ) {
2677              return new WP_Error( 'missing_publish_callback' );
2678          }
2679  
2680          // Validate date.
2681          $now = gmdate( 'Y-m-d H:i:59' );
2682          if ( $args['date_gmt'] ) {
2683              $is_future_dated = ( mysql2date( 'U', $args['date_gmt'], false ) > mysql2date( 'U', $now, false ) );
2684              if ( ! $is_future_dated ) {
2685                  return new WP_Error( 'not_future_date', __( 'You must supply a future date to schedule.' ) ); // Only future dates are allowed.
2686              }
2687  
2688              if ( ! $this->is_theme_active() && ( 'future' === $args['status'] || $is_future_dated ) ) {
2689                  return new WP_Error( 'cannot_schedule_theme_switches' ); // This should be allowed in the future, when theme is a regular setting.
2690              }
2691              $will_remain_auto_draft = ( ! $args['status'] && ( ! $changeset_post_id || 'auto-draft' === get_post_status( $changeset_post_id ) ) );
2692              if ( $will_remain_auto_draft ) {
2693                  return new WP_Error( 'cannot_supply_date_for_auto_draft_changeset' );
2694              }
2695          } elseif ( $changeset_post_id && 'future' === $args['status'] ) {
2696  
2697              // Fail if the new status is future but the existing post's date is not in the future.
2698              $changeset_post = get_post( $changeset_post_id );
2699              if ( mysql2date( 'U', $changeset_post->post_date_gmt, false ) <= mysql2date( 'U', $now, false ) ) {
2700                  return new WP_Error( 'not_future_date', __( 'You must supply a future date to schedule.' ) );
2701              }
2702          }
2703  
2704          if ( ! empty( $is_future_dated ) && 'publish' === $args['status'] ) {
2705              $args['status'] = 'future';
2706          }
2707  
2708          // Validate autosave param. See _wp_post_revision_fields() for why these fields are disallowed.
2709          if ( $args['autosave'] ) {
2710              if ( $args['date_gmt'] ) {
2711                  return new WP_Error( 'illegal_autosave_with_date_gmt' );
2712              } elseif ( $args['status'] ) {
2713                  return new WP_Error( 'illegal_autosave_with_status' );
2714              } elseif ( $args['user_id'] && get_current_user_id() !== $args['user_id'] ) {
2715                  return new WP_Error( 'illegal_autosave_with_non_current_user' );
2716              }
2717          }
2718  
2719          // The request was made via wp.customize.previewer.save().
2720          $update_transactionally = (bool) $args['status'];
2721          $allow_revision         = (bool) $args['status'];
2722  
2723          // Amend post values with any supplied data.
2724          foreach ( $args['data'] as $setting_id => $setting_params ) {
2725              if ( is_array( $setting_params ) && array_key_exists( 'value', $setting_params ) ) {
2726                  $this->set_post_value( $setting_id, $setting_params['value'] ); // Add to post values so that they can be validated and sanitized.
2727              }
2728          }
2729  
2730          // Note that in addition to post data, this will include any stashed theme mods.
2731          $post_values = $this->unsanitized_post_values(
2732              array(
2733                  'exclude_changeset' => true,
2734                  'exclude_post_data' => false,
2735              )
2736          );
2737          $this->add_dynamic_settings( array_keys( $post_values ) ); // Ensure settings get created even if they lack an input value.
2738  
2739          /*
2740           * Get list of IDs for settings that have values different from what is currently
2741           * saved in the changeset. By skipping any values that are already the same, the
2742           * subset of changed settings can be passed into validate_setting_values to prevent
2743           * an underprivileged modifying a single setting for which they have the capability
2744           * from being blocked from saving. This also prevents a user from touching of the
2745           * previous saved settings and overriding the associated user_id if they made no change.
2746           */
2747          $changed_setting_ids = array();
2748          foreach ( $post_values as $setting_id => $setting_value ) {
2749              $setting = $this->get_setting( $setting_id );
2750  
2751              if ( $setting && 'theme_mod' === $setting->type ) {
2752                  $prefixed_setting_id = $this->get_stylesheet() . '::' . $setting->id;
2753              } else {
2754                  $prefixed_setting_id = $setting_id;
2755              }
2756  
2757              $is_value_changed = (
2758                  ! isset( $existing_changeset_data[ $prefixed_setting_id ] )
2759                  ||
2760                  ! array_key_exists( 'value', $existing_changeset_data[ $prefixed_setting_id ] )
2761                  ||
2762                  $existing_changeset_data[ $prefixed_setting_id ]['value'] !== $setting_value
2763              );
2764              if ( $is_value_changed ) {
2765                  $changed_setting_ids[] = $setting_id;
2766              }
2767          }
2768  
2769          /**
2770           * Fires before save validation happens.
2771           *
2772           * Plugins can add just-in-time {@see 'customize_validate_{$this->ID}'} filters
2773           * at this point to catch any settings registered after `customize_register`.
2774           * The dynamic portion of the hook name, `$this->ID` refers to the setting ID.
2775           *
2776           * @since 4.6.0
2777           *
2778           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
2779           */
2780          do_action( 'customize_save_validation_before', $this );
2781  
2782          // Validate settings.
2783          $validated_values      = array_merge(
2784              array_fill_keys( array_keys( $args['data'] ), null ), // Make sure existence/capability checks are done on value-less setting updates.
2785              $post_values
2786          );
2787          $setting_validities    = $this->validate_setting_values(
2788              $validated_values,
2789              array(
2790                  'validate_capability' => true,
2791                  'validate_existence'  => true,
2792              )
2793          );
2794          $invalid_setting_count = count( array_filter( $setting_validities, 'is_wp_error' ) );
2795  
2796          /*
2797           * Short-circuit if there are invalid settings the update is transactional.
2798           * A changeset update is transactional when a status is supplied in the request.
2799           */
2800          if ( $update_transactionally && $invalid_setting_count > 0 ) {
2801              $response = array(
2802                  'setting_validities' => $setting_validities,
2803                  /* translators: %s: Number of invalid settings. */
2804                  'message'            => sprintf( _n( 'Unable to save due to %s invalid setting.', 'Unable to save due to %s invalid settings.', $invalid_setting_count ), number_format_i18n( $invalid_setting_count ) ),
2805              );
2806              return new WP_Error( 'transaction_fail', '', $response );
2807          }
2808  
2809          // Obtain/merge data for changeset.
2810          $original_changeset_data = $this->get_changeset_post_data( $changeset_post_id );
2811          $data                    = $original_changeset_data;
2812          if ( is_wp_error( $data ) ) {
2813              $data = array();
2814          }
2815  
2816          // Ensure that all post values are included in the changeset data.
2817          foreach ( $post_values as $setting_id => $post_value ) {
2818              if ( ! isset( $args['data'][ $setting_id ] ) ) {
2819                  $args['data'][ $setting_id ] = array();
2820              }
2821              if ( ! isset( $args['data'][ $setting_id ]['value'] ) ) {
2822                  $args['data'][ $setting_id ]['value'] = $post_value;
2823              }
2824          }
2825  
2826          foreach ( $args['data'] as $setting_id => $setting_params ) {
2827              $setting = $this->get_setting( $setting_id );
2828              if ( ! $setting || ! $setting->check_capabilities() ) {
2829                  continue;
2830              }
2831  
2832              // Skip updating changeset for invalid setting values.
2833              if ( isset( $setting_validities[ $setting_id ] ) && is_wp_error( $setting_validities[ $setting_id ] ) ) {
2834                  continue;
2835              }
2836  
2837              $changeset_setting_id = $setting_id;
2838              if ( 'theme_mod' === $setting->type ) {
2839                  $changeset_setting_id = sprintf( '%s::%s', $this->get_stylesheet(), $setting_id );
2840              }
2841  
2842              if ( null === $setting_params ) {
2843                  // Remove setting from changeset entirely.
2844                  unset( $data[ $changeset_setting_id ] );
2845              } else {
2846  
2847                  if ( ! isset( $data[ $changeset_setting_id ] ) ) {
2848                      $data[ $changeset_setting_id ] = array();
2849                  }
2850  
2851                  // Merge any additional setting params that have been supplied with the existing params.
2852                  $merged_setting_params = array_merge( $data[ $changeset_setting_id ], $setting_params );
2853  
2854                  // Skip updating setting params if unchanged (ensuring the user_id is not overwritten).
2855                  if ( $data[ $changeset_setting_id ] === $merged_setting_params ) {
2856                      continue;
2857                  }
2858  
2859                  $data[ $changeset_setting_id ] = array_merge(
2860                      $merged_setting_params,
2861                      array(
2862                          'type'              => $setting->type,
2863                          'user_id'           => $args['user_id'],
2864                          'date_modified_gmt' => current_time( 'mysql', true ),
2865                      )
2866                  );
2867  
2868                  // Clear starter_content flag in data if changeset is not explicitly being updated for starter content.
2869                  if ( empty( $args['starter_content'] ) ) {
2870                      unset( $data[ $changeset_setting_id ]['starter_content'] );
2871                  }
2872              }
2873          }
2874  
2875          $filter_context = array(
2876              'uuid'          => $this->changeset_uuid(),
2877              'title'         => $args['title'],
2878              'status'        => $args['status'],
2879              'date_gmt'      => $args['date_gmt'],
2880              'post_id'       => $changeset_post_id,
2881              'previous_data' => is_wp_error( $original_changeset_data ) ? array() : $original_changeset_data,
2882              'manager'       => $this,
2883          );
2884  
2885          /**
2886           * Filters the settings' data that will be persisted into the changeset.
2887           *
2888           * Plugins may amend additional data (such as additional meta for settings) into the changeset with this filter.
2889           *
2890           * @since 4.7.0
2891           *
2892           * @param array $data Updated changeset data, mapping setting IDs to arrays containing a $value item and optionally other metadata.
2893           * @param array $context {
2894           *     Filter context.
2895           *
2896           *     @type string               $uuid          Changeset UUID.
2897           *     @type string               $title         Requested title for the changeset post.
2898           *     @type string               $status        Requested status for the changeset post.
2899           *     @type string               $date_gmt      Requested date for the changeset post in MySQL format and GMT timezone.
2900           *     @type int|false            $post_id       Post ID for the changeset, or false if it doesn't exist yet.
2901           *     @type array                $previous_data Previous data contained in the changeset.
2902           *     @type WP_Customize_Manager $manager       Manager instance.
2903           * }
2904           */
2905          $data = apply_filters( 'customize_changeset_save_data', $data, $filter_context );
2906  
2907          // Switch theme if publishing changes now.
2908          if ( 'publish' === $args['status'] && ! $this->is_theme_active() ) {
2909              // Temporarily stop previewing the theme to allow switch_themes() to operate properly.
2910              $this->stop_previewing_theme();
2911              switch_theme( $this->get_stylesheet() );
2912              update_option( 'theme_switched_via_customizer', true );
2913              $this->start_previewing_theme();
2914          }
2915  
2916          // Gather the data for wp_insert_post()/wp_update_post().
2917          $post_array = array(
2918              // JSON_UNESCAPED_SLASHES is only to improve readability as slashes needn't be escaped in storage.
2919              'post_content' => wp_json_encode( $data, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT ),
2920          );
2921          if ( $args['title'] ) {
2922              $post_array['post_title'] = $args['title'];
2923          }
2924          if ( $changeset_post_id ) {
2925              $post_array['ID'] = $changeset_post_id;
2926          } else {
2927              $post_array['post_type']   = 'customize_changeset';
2928              $post_array['post_name']   = $this->changeset_uuid();
2929              $post_array['post_status'] = 'auto-draft';
2930          }
2931          if ( $args['status'] ) {
2932              $post_array['post_status'] = $args['status'];
2933          }
2934  
2935          // Reset post date to now if we are publishing, otherwise pass post_date_gmt and translate for post_date.
2936          if ( 'publish' === $args['status'] ) {
2937              $post_array['post_date_gmt'] = '0000-00-00 00:00:00';
2938              $post_array['post_date']     = '0000-00-00 00:00:00';
2939          } elseif ( $args['date_gmt'] ) {
2940              $post_array['post_date_gmt'] = $args['date_gmt'];
2941              $post_array['post_date']     = get_date_from_gmt( $args['date_gmt'] );
2942          } elseif ( $changeset_post_id && 'auto-draft' === get_post_status( $changeset_post_id ) ) {
2943              /*
2944               * Keep bumping the date for the auto-draft whenever it is modified;
2945               * this extends its life, preserving it from garbage-collection via
2946               * wp_delete_auto_drafts().
2947               */
2948              $post_array['post_date']     = current_time( 'mysql' );
2949              $post_array['post_date_gmt'] = '';
2950          }
2951  
2952          $this->store_changeset_revision = $allow_revision;
2953          add_filter( 'wp_save_post_revision_post_has_changed', array( $this, '_filter_revision_post_has_changed' ), 5, 3 );
2954  
2955          /*
2956           * Update the changeset post. The publish_customize_changeset action will cause the settings in the
2957           * changeset to be saved via WP_Customize_Setting::save(). Updating a post with publish status will
2958           * trigger WP_Customize_Manager::publish_changeset_values().
2959           */
2960          add_filter( 'wp_insert_post_data', array( $this, 'preserve_insert_changeset_post_content' ), 5, 3 );
2961          if ( $changeset_post_id ) {
2962              if ( $args['autosave'] && 'auto-draft' !== get_post_status( $changeset_post_id ) ) {
2963                  // See _wp_translate_postdata() for why this is required as it will use the edit_post meta capability.
2964                  add_filter( 'map_meta_cap', array( $this, 'grant_edit_post_capability_for_changeset' ), 10, 4 );
2965  
2966                  $post_array['post_ID']   = $post_array['ID'];
2967                  $post_array['post_type'] = 'customize_changeset';
2968  
2969                  $r = wp_create_post_autosave( wp_slash( $post_array ) );
2970  
2971                  remove_filter( 'map_meta_cap', array( $this, 'grant_edit_post_capability_for_changeset' ), 10 );
2972              } else {
2973                  $post_array['edit_date'] = true; // Prevent date clearing.
2974  
2975                  $r = wp_update_post( wp_slash( $post_array ), true );
2976  
2977                  // Delete autosave revision for user when the changeset is updated.
2978                  if ( ! empty( $args['user_id'] ) ) {
2979                      $autosave_draft = wp_get_post_autosave( $changeset_post_id, $args['user_id'] );
2980                      if ( $autosave_draft ) {
2981                          wp_delete_post( $autosave_draft->ID, true );
2982                      }
2983                  }
2984              }
2985          } else {
2986              $r = wp_insert_post( wp_slash( $post_array ), true );
2987              if ( ! is_wp_error( $r ) ) {
2988                  $this->_changeset_post_id = $r; // Update cached post ID for the loaded changeset.
2989              }
2990          }
2991          remove_filter( 'wp_insert_post_data', array( $this, 'preserve_insert_changeset_post_content' ), 5 );
2992  
2993          $this->_changeset_data = null; // Reset so WP_Customize_Manager::changeset_data() will re-populate with updated contents.
2994  
2995          remove_filter( 'wp_save_post_revision_post_has_changed', array( $this, '_filter_revision_post_has_changed' ) );
2996  
2997          $response = array(
2998              'setting_validities' => $setting_validities,
2999          );
3000  
3001          if ( is_wp_error( $r ) ) {
3002              $response['changeset_post_save_failure'] = $r->get_error_code();
3003              return new WP_Error( 'changeset_post_save_failure', '', $response );
3004          }
3005  
3006          return $response;
3007      }
3008  
3009      /**
3010       * Preserves the initial JSON post_content passed to save into the post.
3011       *
3012       * This is needed to prevent KSES and other {@see 'content_save_pre'} filters
3013       * from corrupting JSON data.
3014       *
3015       * Note that WP_Customize_Manager::validate_setting_values() have already
3016       * run on the setting values being serialized as JSON into the post content
3017       * so it is pre-sanitized.
3018       *
3019       * Also, the sanitization logic is re-run through the respective
3020       * WP_Customize_Setting::sanitize() method when being read out of the
3021       * changeset, via WP_Customize_Manager::post_value(), and this sanitized
3022       * value will also be sent into WP_Customize_Setting::update() for
3023       * persisting to the DB.
3024       *
3025       * Multiple users can collaborate on a single changeset, where one user may
3026       * have the unfiltered_html capability but another may not. A user with
3027       * unfiltered_html may add a script tag to some field which needs to be kept
3028       * intact even when another user updates the changeset to modify another field
3029       * when they do not have unfiltered_html.
3030       *
3031       * @since 5.4.1
3032       *
3033       * @param array $data                An array of slashed and processed post data.
3034       * @param array $postarr             An array of sanitized (and slashed) but otherwise unmodified post data.
3035       * @param array $unsanitized_postarr An array of slashed yet *unsanitized* and unprocessed post data as originally passed to wp_insert_post().
3036       * @return array Filtered post data.
3037       */
3038  	public function preserve_insert_changeset_post_content( $data, $postarr, $unsanitized_postarr ) {
3039          if (
3040              isset( $data['post_type'] ) &&
3041              isset( $unsanitized_postarr['post_content'] ) &&
3042              'customize_changeset' === $data['post_type'] ||
3043              (
3044                  'revision' === $data['post_type'] &&
3045                  ! empty( $data['post_parent'] ) &&
3046                  'customize_changeset' === get_post_type( $data['post_parent'] )
3047              )
3048          ) {
3049              $data['post_content'] = $unsanitized_postarr['post_content'];
3050          }
3051          return $data;
3052      }
3053  
3054      /**
3055       * Trashes or deletes a changeset post.
3056       *
3057       * The following re-formulates the logic from `wp_trash_post()` as done in
3058       * `wp_publish_post()`. The reason for bypassing `wp_trash_post()` is that it
3059       * will mutate the the `post_content` and the `post_name` when they should be
3060       * untouched.
3061       *
3062       * @since 4.9.0
3063       *
3064       * @see wp_trash_post()
3065       * @global wpdb $wpdb WordPress database abstraction object.
3066       *
3067       * @param int|WP_Post $post The changeset post.
3068       * @return mixed A WP_Post object for the trashed post or an empty value on failure.
3069       */
3070  	public function trash_changeset_post( $post ) {
3071          global $wpdb;
3072  
3073          $post = get_post( $post );
3074  
3075          if ( ! ( $post instanceof WP_Post ) ) {
3076              return $post;
3077          }
3078          $post_id = $post->ID;
3079  
3080          if ( ! EMPTY_TRASH_DAYS ) {
3081              return wp_delete_post( $post_id, true );
3082          }
3083  
3084          if ( 'trash' === get_post_status( $post ) ) {
3085              return false;
3086          }
3087  
3088          $previous_status = $post->post_status;
3089  
3090          /** This filter is documented in wp-includes/post.php */
3091          $check = apply_filters( 'pre_trash_post', null, $post, $previous_status );
3092          if ( null !== $check ) {
3093              return $check;
3094          }
3095  
3096          /** This action is documented in wp-includes/post.php */
3097          do_action( 'wp_trash_post', $post_id, $previous_status );
3098  
3099          add_post_meta( $post_id, '_wp_trash_meta_status', $previous_status );
3100          add_post_meta( $post_id, '_wp_trash_meta_time', time() );
3101  
3102          $new_status = 'trash';
3103          $wpdb->update( $wpdb->posts, array( 'post_status' => $new_status ), array( 'ID' => $post->ID ) );
3104          clean_post_cache( $post->ID );
3105  
3106          $post->post_status = $new_status;
3107          wp_transition_post_status( $new_status, $previous_status, $post );
3108  
3109          /** This action is documented in wp-includes/post.php */
3110          do_action( "edit_post_{$post->post_type}", $post->ID, $post );
3111  
3112          /** This action is documented in wp-includes/post.php */
3113          do_action( 'edit_post', $post->ID, $post );
3114  
3115          /** This action is documented in wp-includes/post.php */
3116          do_action( "save_post_{$post->post_type}", $post->ID, $post, true );
3117  
3118          /** This action is documented in wp-includes/post.php */
3119          do_action( 'save_post', $post->ID, $post, true );
3120  
3121          /** This action is documented in wp-includes/post.php */
3122          do_action( 'wp_insert_post', $post->ID, $post, true );
3123  
3124          wp_after_insert_post( get_post( $post_id ), true, $post );
3125  
3126          wp_trash_post_comments( $post_id );
3127  
3128          /** This action is documented in wp-includes/post.php */
3129          do_action( 'trashed_post', $post_id, $previous_status );
3130  
3131          return $post;
3132      }
3133  
3134      /**
3135       * Handles request to trash a changeset.
3136       *
3137       * @since 4.9.0
3138       */
3139  	public function handle_changeset_trash_request() {
3140          if ( ! is_user_logged_in() ) {
3141              wp_send_json_error( 'unauthenticated' );
3142          }
3143  
3144          if ( ! $this->is_preview() ) {
3145              wp_send_json_error( 'not_preview' );
3146          }
3147  
3148          if ( ! check_ajax_referer( 'trash_customize_changeset', 'nonce', false ) ) {
3149              wp_send_json_error(
3150                  array(
3151                      'code'    => 'invalid_nonce',
3152                      'message' => __( 'There was an authentication problem. Please reload and try again.' ),
3153                  )
3154              );
3155          }
3156  
3157          $changeset_post_id = $this->changeset_post_id();
3158  
3159          if ( ! $changeset_post_id ) {
3160              wp_send_json_error(
3161                  array(
3162                      'message' => __( 'No changes saved yet, so there is nothing to trash.' ),
3163                      'code'    => 'non_existent_changeset',
3164                  )
3165              );
3166              return;
3167          }
3168  
3169          if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->delete_post, $changeset_post_id ) ) {
3170              wp_send_json_error(
3171                  array(
3172                      'code'    => 'changeset_trash_unauthorized',
3173                      'message' => __( 'Unable to trash changes.' ),
3174                  )
3175              );
3176          }
3177  
3178          $lock_user = (int) wp_check_post_lock( $changeset_post_id );
3179  
3180          if ( $lock_user && get_current_user_id() !== $lock_user ) {
3181              wp_send_json_error(
3182                  array(
3183                      'code'     => 'changeset_locked',
3184                      'message'  => __( 'Changeset is being edited by other user.' ),
3185                      'lockUser' => $this->get_lock_user_data( $lock_user ),
3186                  )
3187              );
3188          }
3189  
3190          if ( 'trash' === get_post_status( $changeset_post_id ) ) {
3191              wp_send_json_error(
3192                  array(
3193                      'message' => __( 'Changes have already been trashed.' ),
3194                      'code'    => 'changeset_already_trashed',
3195                  )
3196              );
3197              return;
3198          }
3199  
3200          $r = $this->trash_changeset_post( $changeset_post_id );
3201          if ( ! ( $r instanceof WP_Post ) ) {
3202              wp_send_json_error(
3203                  array(
3204                      'code'    => 'changeset_trash_failure',
3205                      'message' => __( 'Unable to trash changes.' ),
3206                  )
3207              );
3208          }
3209  
3210          wp_send_json_success(
3211              array(
3212                  'message' => __( 'Changes trashed successfully.' ),
3213              )
3214          );
3215      }
3216  
3217      /**
3218       * Re-maps 'edit_post' meta cap for a customize_changeset post to be the same as 'customize' maps.
3219       *
3220       * There is essentially a "meta meta" cap in play here, where 'edit_post' meta cap maps to
3221       * the 'customize' meta cap which then maps to 'edit_theme_options'. This is currently
3222       * required in core for `wp_create_post_autosave()` because it will call
3223       * `_wp_translate_postdata()` which in turn will check if a user can 'edit_post', but the
3224       * the caps for the customize_changeset post type are all mapping to the meta capability.
3225       * This should be able to be removed once #40922 is addressed in core.
3226       *
3227       * @since 4.9.0
3228       *
3229       * @link https://core.trac.wordpress.org/ticket/40922
3230       * @see WP_Customize_Manager::save_changeset_post()
3231       * @see _wp_translate_postdata()
3232       *
3233       * @param string[] $caps    Array of the user's capabilities.
3234       * @param string   $cap     Capability name.
3235       * @param int      $user_id The user ID.
3236       * @param array    $args    Adds the context to the cap. Typically the object ID.
3237       * @return array Capabilities.
3238       */
3239  	public function grant_edit_post_capability_for_changeset( $caps, $cap, $user_id, $args ) {
3240          if ( 'edit_post' === $cap && ! empty( $args[0] ) && 'customize_changeset' === get_post_type( $args[0] ) ) {
3241              $post_type_obj = get_post_type_object( 'customize_changeset' );
3242              $caps          = map_meta_cap( $post_type_obj->cap->$cap, $user_id );
3243          }
3244          return $caps;
3245      }
3246  
3247      /**
3248       * Marks the changeset post as being currently edited by the current user.
3249       *
3250       * @since 4.9.0
3251       *
3252       * @param int  $changeset_post_id Changeset post ID.
3253       * @param bool $take_over Whether to take over the changeset. Default false.
3254       */
3255  	public function set_changeset_lock( $changeset_post_id, $take_over = false ) {
3256          if ( $changeset_post_id ) {
3257              $can_override = ! (bool) get_post_meta( $changeset_post_id, '_edit_lock', true );
3258  
3259              if ( $take_over ) {
3260                  $can_override = true;
3261              }
3262  
3263              if ( $can_override ) {
3264                  $lock = sprintf( '%s:%s', time(), get_current_user_id() );
3265                  update_post_meta( $changeset_post_id, '_edit_lock', $lock );
3266              } else {
3267                  $this->refresh_changeset_lock( $changeset_post_id );
3268              }
3269          }
3270      }
3271  
3272      /**
3273       * Refreshes changeset lock with the current time if current user edited the changeset before.
3274       *
3275       * @since 4.9.0
3276       *
3277       * @param int $changeset_post_id Changeset post ID.
3278       */
3279  	public function refresh_changeset_lock( $changeset_post_id ) {
3280          if ( ! $changeset_post_id ) {
3281              return;
3282          }
3283  
3284          $lock = get_post_meta( $changeset_post_id, '_edit_lock', true );
3285          $lock = explode( ':', $lock );
3286  
3287          if ( $lock && ! empty( $lock[1] ) ) {
3288              $user_id         = (int) $lock[1];
3289              $current_user_id = get_current_user_id();
3290              if ( $user_id === $current_user_id ) {
3291                  $lock = sprintf( '%s:%s', time(), $user_id );
3292                  update_post_meta( $changeset_post_id, '_edit_lock', $lock );
3293              }
3294          }
3295      }
3296  
3297      /**
3298       * Filters heartbeat settings for the Customizer.
3299       *
3300       * @since 4.9.0
3301       *
3302       * @global string $pagenow The filename of the current screen.
3303       *
3304       * @param array $settings Current settings to filter.
3305       * @return array Heartbeat settings.
3306       */
3307  	public function add_customize_screen_to_heartbeat_settings( $settings ) {
3308          global $pagenow;
3309  
3310          if ( 'customize.php' === $pagenow ) {
3311              $settings['screenId'] = 'customize';
3312          }
3313  
3314          return $settings;
3315      }
3316  
3317      /**
3318       * Gets lock user data.
3319       *
3320       * @since 4.9.0
3321       *
3322       * @param int $user_id User ID.
3323       * @return array|null User data formatted for client.
3324       */
3325  	protected function get_lock_user_data( $user_id ) {
3326          if ( ! $user_id ) {
3327              return null;
3328          }
3329  
3330          $lock_user = get_userdata( $user_id );
3331  
3332          if ( ! $lock_user ) {
3333              return null;
3334          }
3335  
3336          $user_details = array(
3337              'id'   => $lock_user->ID,
3338              'name' => $lock_user->display_name,
3339          );
3340  
3341          if ( get_option( 'show_avatars' ) ) {
3342              $user_details['avatar'] = get_avatar_url( $lock_user->ID, array( 'size' => 128 ) );
3343          }
3344  
3345          return $user_details;
3346      }
3347  
3348      /**
3349       * Checks locked changeset with heartbeat API.
3350       *
3351       * @since 4.9.0
3352       *
3353       * @param array  $response  The Heartbeat response.
3354       * @param array  $data      The $_POST data sent.
3355       * @param string $screen_id The screen id.
3356       * @return array The Heartbeat response.
3357       */
3358  	public function check_changeset_lock_with_heartbeat( $response, $data, $screen_id ) {
3359          if ( isset( $data['changeset_uuid'] ) ) {
3360              $changeset_post_id = $this->find_changeset_post_id( $data['changeset_uuid'] );
3361          } else {
3362              $changeset_post_id = $this->changeset_post_id();
3363          }
3364  
3365          if (
3366              array_key_exists( 'check_changeset_lock', $data )
3367              && 'customize' === $screen_id
3368              && $changeset_post_id
3369              && current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id )
3370          ) {
3371              $lock_user_id = wp_check_post_lock( $changeset_post_id );
3372  
3373              if ( $lock_user_id ) {
3374                  $response['customize_changeset_lock_user'] = $this->get_lock_user_data( $lock_user_id );
3375              } else {
3376  
3377                  // Refreshing time will ensure that the user is sitting on customizer and has not closed the customizer tab.
3378                  $this->refresh_changeset_lock( $changeset_post_id );
3379              }
3380          }
3381  
3382          return $response;
3383      }
3384  
3385      /**
3386       * Removes changeset lock when take over request is sent via Ajax.
3387       *
3388       * @since 4.9.0
3389       */
3390  	public function handle_override_changeset_lock_request() {
3391          if ( ! $this->is_preview() ) {
3392              wp_send_json_error( 'not_preview', 400 );
3393          }
3394  
3395          if ( ! check_ajax_referer( 'customize_override_changeset_lock', 'nonce', false ) ) {
3396              wp_send_json_error(
3397                  array(
3398                      'code'    => 'invalid_nonce',
3399                      'message' => __( 'Security check failed.' ),
3400                  )
3401              );
3402          }
3403  
3404          $changeset_post_id = $this->changeset_post_id();
3405  
3406          if ( empty( $changeset_post_id ) ) {
3407              wp_send_json_error(
3408                  array(
3409                      'code'    => 'no_changeset_found_to_take_over',
3410                      'message' => __( 'No changeset found to take over' ),
3411                  )
3412              );
3413          }
3414  
3415          if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id ) ) {
3416              wp_send_json_error(
3417                  array(
3418                      'code'    => 'cannot_remove_changeset_lock',
3419                      'message' => __( 'Sorry, you are not allowed to take over.' ),
3420                  )
3421              );
3422          }
3423  
3424          $this->set_changeset_lock( $changeset_post_id, true );
3425  
3426          wp_send_json_success( 'changeset_taken_over' );
3427      }
3428  
3429      /**
3430       * Determines whether a changeset revision should be made.
3431       *
3432       * @since 4.7.0
3433       * @var bool
3434       */
3435      protected $store_changeset_revision;
3436  
3437      /**
3438       * Filters whether a changeset has changed to create a new revision.
3439       *
3440       * Note that this will not be called while a changeset post remains in auto-draft status.
3441       *
3442       * @since 4.7.0
3443       *
3444       * @param bool    $post_has_changed Whether the post has changed.
3445       * @param WP_Post $latest_revision  The latest revision post object.
3446       * @param WP_Post $post             The post object.
3447       * @return bool Whether a revision should be made.
3448       */
3449  	public function _filter_revision_post_has_changed( $post_has_changed, $latest_revision, $post ) {
3450          unset( $latest_revision );
3451          if ( 'customize_changeset' === $post->post_type ) {
3452              $post_has_changed = $this->store_changeset_revision;
3453          }
3454          return $post_has_changed;
3455      }
3456  
3457      /**
3458       * Publishes the values of a changeset.
3459       *
3460       * This will publish the values contained in a changeset, even changesets that do not
3461       * correspond to current manager instance. This is called by
3462       * `_wp_customize_publish_changeset()` when a customize_changeset post is
3463       * transitioned to the `publish` status. As such, this method should not be
3464       * called directly and instead `wp_publish_post()` should be used.
3465       *
3466       * Please note that if the settings in the changeset are for a non-activated
3467       * theme, the theme must first be switched to (via `switch_theme()`) before
3468       * invoking this method.
3469       *
3470       * @since 4.7.0
3471       *
3472       * @see _wp_customize_publish_changeset()
3473       * @global wpdb $wpdb WordPress database abstraction object.
3474       *
3475       * @param int $changeset_post_id ID for customize_changeset post. Defaults to the changeset for the current manager instance.
3476       * @return true|WP_Error True or error info.
3477       */
3478  	public function _publish_changeset_values( $changeset_post_id ) {
3479          global $wpdb;
3480  
3481          $publishing_changeset_data = $this->get_changeset_post_data( $changeset_post_id );
3482          if ( is_wp_error( $publishing_changeset_data ) ) {
3483              return $publishing_changeset_data;
3484          }
3485  
3486          $changeset_post = get_post( $changeset_post_id );
3487  
3488          /*
3489           * Temporarily override the changeset context so that it will be read
3490           * in calls to unsanitized_post_values() and so that it will be available
3491           * on the $wp_customize object passed to hooks during the save logic.
3492           */
3493          $previous_changeset_post_id = $this->_changeset_post_id;
3494          $this->_changeset_post_id   = $changeset_post_id;
3495          $previous_changeset_uuid    = $this->_changeset_uuid;
3496          $this->_changeset_uuid      = $changeset_post->post_name;
3497          $previous_changeset_data    = $this->_changeset_data;
3498          $this->_changeset_data      = $publishing_changeset_data;
3499  
3500          // Parse changeset data to identify theme mod settings and user IDs associated with settings to be saved.
3501          $setting_user_ids   = array();
3502          $theme_mod_settings = array();
3503          $namespace_pattern  = '/^(?P<stylesheet>.+?)::(?P<setting_id>.+)$/';
3504          $matches            = array();
3505          foreach ( $this->_changeset_data as $raw_setting_id => $setting_params ) {
3506              $actual_setting_id    = null;
3507              $is_theme_mod_setting = (
3508                  isset( $setting_params['value'] )
3509                  &&
3510                  isset( $setting_params['type'] )
3511                  &&
3512                  'theme_mod' === $setting_params['type']
3513                  &&
3514                  preg_match( $namespace_pattern, $raw_setting_id, $matches )
3515              );
3516              if ( $is_theme_mod_setting ) {
3517                  if ( ! isset( $theme_mod_settings[ $matches['stylesheet'] ] ) ) {
3518                      $theme_mod_settings[ $matches['stylesheet'] ] = array();
3519                  }
3520                  $theme_mod_settings[ $matches['stylesheet'] ][ $matches['setting_id'] ] = $setting_params;
3521  
3522                  if ( $this->get_stylesheet() === $matches['stylesheet'] ) {
3523                      $actual_setting_id = $matches['setting_id'];
3524                  }
3525              } else {
3526                  $actual_setting_id = $raw_setting_id;
3527              }
3528  
3529              // Keep track of the user IDs for settings actually for this theme.
3530              if ( $actual_setting_id && isset( $setting_params['user_id'] ) ) {
3531                  $setting_user_ids[ $actual_setting_id ] = $setting_params['user_id'];
3532              }
3533          }
3534  
3535          $changeset_setting_values = $this->unsanitized_post_values(
3536              array(
3537                  'exclude_post_data' => true,
3538                  'exclude_changeset' => false,
3539              )
3540          );
3541          $changeset_setting_ids    = array_keys( $changeset_setting_values );
3542          $this->add_dynamic_settings( $changeset_setting_ids );
3543  
3544          /**
3545           * Fires once the theme has switched in the Customizer, but before settings
3546           * have been saved.
3547           *
3548           * @since 3.4.0
3549           *
3550           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
3551           */
3552          do_action( 'customize_save', $this );
3553  
3554          /*
3555           * Ensure that all settings will allow themselves to be saved. Note that
3556           * this is safe because the setting would have checked the capability
3557           * when the setting value was written into the changeset. So this is why
3558           * an additional capability check is not required here.
3559           */
3560          $original_setting_capabilities = array();
3561          foreach ( $changeset_setting_ids as $setting_id ) {
3562              $setting = $this->get_setting( $setting_id );
3563              if ( $setting && ! isset( $setting_user_ids[ $setting_id ] ) ) {
3564                  $original_setting_capabilities[ $setting->id ] = $setting->capability;
3565                  $setting->capability                           = 'exist';
3566              }
3567          }
3568  
3569          $original_user_id = get_current_user_id();
3570          foreach ( $changeset_setting_ids as $setting_id ) {
3571              $setting = $this->get_setting( $setting_id );
3572              if ( $setting ) {
3573                  /*
3574                   * Set the current user to match the user who saved the value into
3575                   * the changeset so that any filters that apply during the save
3576                   * process will respect the original user's capabilities. This
3577                   * will ensure, for example, that KSES won't strip unsafe HTML
3578                   * when a scheduled changeset publishes via WP Cron.
3579                   */
3580                  if ( isset( $setting_user_ids[ $setting_id ] ) ) {
3581                      wp_set_current_user( $setting_user_ids[ $setting_id ] );
3582                  } else {
3583                      wp_set_current_user( $original_user_id );
3584                  }
3585  
3586                  $setting->save();
3587              }
3588          }
3589          wp_set_current_user( $original_user_id );
3590  
3591          // Update the stashed theme mod settings, removing the active theme's stashed settings, if activated.
3592          if ( did_action( 'switch_theme' ) ) {
3593              $other_theme_mod_settings = $theme_mod_settings;
3594              unset( $other_theme_mod_settings[ $this->get_stylesheet() ] );
3595              $this->update_stashed_theme_mod_settings( $other_theme_mod_settings );
3596          }
3597  
3598          /**
3599           * Fires after Customize settings have been saved.
3600           *
3601           * @since 3.6.0
3602           *
3603           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
3604           */
3605          do_action( 'customize_save_after', $this );
3606  
3607          // Restore original capabilities.
3608          foreach ( $original_setting_capabilities as $setting_id => $capability ) {
3609              $setting = $this->get_setting( $setting_id );
3610              if ( $setting ) {
3611                  $setting->capability = $capability;
3612              }
3613          }
3614  
3615          // Restore original changeset data.
3616          $this->_changeset_data    = $previous_changeset_data;
3617          $this->_changeset_post_id = $previous_changeset_post_id;
3618          $this->_changeset_uuid    = $previous_changeset_uuid;
3619  
3620          /*
3621           * Convert all autosave revisions into their own auto-drafts so that users can be prompted to
3622           * restore them when a changeset is published, but they had been locked out from including
3623           * their changes in the changeset.
3624           */
3625          $revisions = wp_get_post_revisions( $changeset_post_id, array( 'check_enabled' => false ) );
3626          foreach ( $revisions as $revision ) {
3627              if ( str_contains( $revision->post_name, "{$changeset_post_id}-autosave" ) ) {
3628                  $wpdb->update(
3629                      $wpdb->posts,
3630                      array(
3631                          'post_status' => 'auto-draft',
3632                          'post_type'   => 'customize_changeset',
3633                          'post_name'   => wp_generate_uuid4(),
3634                          'post_parent' => 0,
3635                      ),
3636                      array(
3637                          'ID' => $revision->ID,
3638                      )
3639                  );
3640                  clean_post_cache( $revision->ID );
3641              }
3642          }
3643  
3644          return true;
3645      }
3646  
3647      /**
3648       * Updates stashed theme mod settings.
3649       *
3650       * @since 4.7.0
3651       *
3652       * @param array $inactive_theme_mod_settings Mapping of stylesheet to arrays of theme mod settings.
3653       * @return array|false Returns array of updated stashed theme mods or false if the update failed or there were no changes.
3654       */
3655  	protected function update_stashed_theme_mod_settings( $inactive_theme_mod_settings ) {
3656          $stashed_theme_mod_settings = get_option( 'customize_stashed_theme_mods' );
3657          if ( empty( $stashed_theme_mod_settings ) ) {
3658              $stashed_theme_mod_settings = array();
3659          }
3660  
3661          // Delete any stashed theme mods for the active theme since they would have been loaded and saved upon activation.
3662          unset( $stashed_theme_mod_settings[ $this->get_stylesheet() ] );
3663  
3664          // Merge inactive theme mods with the stashed theme mod settings.
3665          foreach ( $inactive_theme_mod_settings as $stylesheet => $theme_mod_settings ) {
3666              if ( ! isset( $stashed_theme_mod_settings[ $stylesheet ] ) ) {
3667                  $stashed_theme_mod_settings[ $stylesheet ] = array();
3668              }
3669  
3670              $stashed_theme_mod_settings[ $stylesheet ] = array_merge(
3671                  $stashed_theme_mod_settings[ $stylesheet ],
3672                  $theme_mod_settings
3673              );
3674          }
3675  
3676          $autoload = false;
3677          $result   = update_option( 'customize_stashed_theme_mods', $stashed_theme_mod_settings, $autoload );
3678          if ( ! $result ) {
3679              return false;
3680          }
3681          return $stashed_theme_mod_settings;
3682      }
3683  
3684      /**
3685       * Refreshes nonces for the current preview.
3686       *
3687       * @since 4.2.0
3688       */
3689  	public function refresh_nonces() {
3690          if ( ! $this->is_preview() ) {
3691              wp_send_json_error( 'not_preview' );
3692          }
3693  
3694          wp_send_json_success( $this->get_nonces() );
3695      }
3696  
3697      /**
3698       * Deletes a given auto-draft changeset or the autosave revision for a given changeset or delete changeset lock.
3699       *
3700       * @since 4.9.0
3701       */
3702  	public function handle_dismiss_autosave_or_lock_request() {
3703          // Calls to dismiss_user_auto_draft_changesets() and wp_get_post_autosave() require non-zero get_current_user_id().
3704          if ( ! is_user_logged_in() ) {
3705              wp_send_json_error( 'unauthenticated', 401 );
3706          }
3707  
3708          if ( ! $this->is_preview() ) {
3709              wp_send_json_error( 'not_preview', 400 );
3710          }
3711  
3712          if ( ! check_ajax_referer( 'customize_dismiss_autosave_or_lock', 'nonce', false ) ) {
3713              wp_send_json_error( 'invalid_nonce', 403 );
3714          }
3715  
3716          $changeset_post_id = $this->changeset_post_id();
3717          $dismiss_lock      = ! empty( $_POST['dismiss_lock'] );
3718          $dismiss_autosave  = ! empty( $_POST['dismiss_autosave'] );
3719  
3720          if ( $dismiss_lock ) {
3721              if ( empty( $changeset_post_id ) && ! $dismiss_autosave ) {
3722                  wp_send_json_error( 'no_changeset_to_dismiss_lock', 404 );
3723              }
3724              if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id ) && ! $dismiss_autosave ) {
3725                  wp_send_json_error( 'cannot_remove_changeset_lock', 403 );
3726              }
3727  
3728              delete_post_meta( $changeset_post_id, '_edit_lock' );
3729  
3730              if ( ! $dismiss_autosave ) {
3731                  wp_send_json_success( 'changeset_lock_dismissed' );
3732              }
3733          }
3734  
3735          if ( $dismiss_autosave ) {
3736              if ( empty( $changeset_post_id ) || 'auto-draft' === get_post_status( $changeset_post_id ) ) {
3737                  $dismissed = $this->dismiss_user_auto_draft_changesets();
3738                  if ( $dismissed > 0 ) {
3739                      wp_send_json_success( 'auto_draft_dismissed' );
3740                  } else {
3741                      wp_send_json_error( 'no_auto_draft_to_delete', 404 );
3742                  }
3743              } else {
3744                  $revision = wp_get_post_autosave( $changeset_post_id, get_current_user_id() );
3745  
3746                  if ( $revision ) {
3747                      if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->delete_post, $changeset_post_id ) ) {
3748                          wp_send_json_error( 'cannot_delete_autosave_revision', 403 );
3749                      }
3750  
3751                      if ( ! wp_delete_post( $revision->ID, true ) ) {
3752                          wp_send_json_error( 'autosave_revision_deletion_failure', 500 );
3753                      } else {
3754                          wp_send_json_success( 'autosave_revision_deleted' );
3755                      }
3756                  } else {
3757                      wp_send_json_error( 'no_autosave_revision_to_delete', 404 );
3758                  }
3759              }
3760          }
3761  
3762          wp_send_json_error( 'unknown_error', 500 );
3763      }
3764  
3765      /**
3766       * Adds a customize setting.
3767       *
3768       * @since 3.4.0
3769       * @since 4.5.0 Return added WP_Customize_Setting instance.
3770       *
3771       * @see WP_Customize_Setting::__construct()
3772       * @link https://developer.wordpress.org/themes/customize-api
3773       *
3774       * @param WP_Customize_Setting|string $id   Customize Setting object, or ID.
3775       * @param array                       $args Optional. Array of properties for the new Setting object.
3776       *                                          See WP_Customize_Setting::__construct() for information
3777       *                                          on accepted arguments. Default empty array.
3778       * @return WP_Customize_Setting The instance of the setting that was added.
3779       */
3780  	public function add_setting( $id, $args = array() ) {
3781          if ( $id instanceof WP_Customize_Setting ) {
3782              $setting = $id;
3783          } else {
3784              $class = 'WP_Customize_Setting';
3785  
3786              /** This filter is documented in wp-includes/class-wp-customize-manager.php */
3787              $args = apply_filters( 'customize_dynamic_setting_args', $args, $id );
3788  
3789              /** This filter is documented in wp-includes/class-wp-customize-manager.php */
3790              $class = apply_filters( 'customize_dynamic_setting_class', $class, $id, $args );
3791  
3792              $setting = new $class( $this, $id, $args );
3793          }
3794  
3795          $this->settings[ $setting->id ] = $setting;
3796          return $setting;
3797      }
3798  
3799      /**
3800       * Registers any dynamically-created settings, such as those from $_POST['customized']
3801       * that have no corresponding setting created.
3802       *
3803       * This is a mechanism to "wake up" settings that have been dynamically created
3804       * on the front end and have been sent to WordPress in `$_POST['customized']`. When WP
3805       * loads, the dynamically-created settings then will get created and previewed
3806       * even though they are not directly created statically with code.
3807       *
3808       * @since 4.2.0
3809       *
3810       * @param array $setting_ids The setting IDs to add.
3811       * @return array The WP_Customize_Setting objects added.
3812       */
3813  	public function add_dynamic_settings( $setting_ids ) {
3814          $new_settings = array();
3815          foreach ( $setting_ids as $setting_id ) {
3816              // Skip settings already created.
3817              if ( $this->get_setting( $setting_id ) ) {
3818                  continue;
3819              }
3820  
3821              $setting_args  = false;
3822              $setting_class = 'WP_Customize_Setting';
3823  
3824              /**
3825               * Filters a dynamic setting's constructor args.
3826               *
3827               * For a dynamic setting to be registered, this filter must be employed
3828               * to override the default false value with an array of args to pass to
3829               * the WP_Customize_Setting constructor.
3830               *
3831               * @since 4.2.0
3832               *
3833               * @param false|array $setting_args The arguments to the WP_Customize_Setting constructor.
3834               * @param string      $setting_id   ID for dynamic setting, usually coming from `$_POST['customized']`.
3835               */
3836              $setting_args = apply_filters( 'customize_dynamic_setting_args', $setting_args, $setting_id );
3837              if ( false === $setting_args ) {
3838                  continue;
3839              }
3840  
3841              /**
3842               * Allow non-statically created settings to be constructed with custom WP_Customize_Setting subclass.
3843               *
3844               * @since 4.2.0
3845               *
3846               * @param string $setting_class WP_Customize_Setting or a subclass.
3847               * @param string $setting_id    ID for dynamic setting, usually coming from `$_POST['customized']`.
3848               * @param array  $setting_args  WP_Customize_Setting or a subclass.
3849               */
3850              $setting_class = apply_filters( 'customize_dynamic_setting_class', $setting_class, $setting_id, $setting_args );
3851  
3852              $setting = new $setting_class( $this, $setting_id, $setting_args );
3853  
3854              $this->add_setting( $setting );
3855              $new_settings[] = $setting;
3856          }
3857          return $new_settings;
3858      }
3859  
3860      /**
3861       * Retrieves a customize setting.
3862       *
3863       * @since 3.4.0
3864       *
3865       * @param string $id Customize Setting ID.
3866       * @return WP_Customize_Setting|void The setting, if set.
3867       */
3868  	public function get_setting( $id ) {
3869          if ( isset( $this->settings[ $id ] ) ) {
3870              return $this->settings[ $id ];
3871          }
3872      }
3873  
3874      /**
3875       * Removes a customize setting.
3876       *
3877       * Note that removing the setting doesn't destroy the WP_Customize_Setting instance or remove its filters.
3878       *
3879       * @since 3.4.0
3880       *
3881       * @param string $id Customize Setting ID.
3882       */
3883  	public function remove_setting( $id ) {
3884          unset( $this->settings[ $id ] );
3885      }
3886  
3887      /**
3888       * Adds a customize panel.
3889       *
3890       * @since 4.0.0
3891       * @since 4.5.0 Return added WP_Customize_Panel instance.
3892       *
3893       * @see WP_Customize_Panel::__construct()
3894       *
3895       * @param WP_Customize_Panel|string $id   Customize Panel object, or ID.
3896       * @param array                     $args Optional. Array of properties for the new Panel object.
3897       *                                        See WP_Customize_Panel::__construct() for information
3898       *                                        on accepted arguments. Default empty array.
3899       * @return WP_Customize_Panel The instance of the panel that was added.
3900       */
3901  	public function add_panel( $id, $args = array() ) {
3902          if ( $id instanceof WP_Customize_Panel ) {
3903              $panel = $id;
3904          } else {
3905              $panel = new WP_Customize_Panel( $this, $id, $args );
3906          }
3907  
3908          $this->panels[ $panel->id ] = $panel;
3909          return $panel;
3910      }
3911  
3912      /**
3913       * Retrieves a customize panel.
3914       *
3915       * @since 4.0.0
3916       *
3917       * @param string $id Panel ID to get.
3918       * @return WP_Customize_Panel|void Requested panel instance, if set.
3919       */
3920  	public function get_panel( $id ) {
3921          if ( isset( $this->panels[ $id ] ) ) {
3922              return $this->panels[ $id ];
3923          }
3924      }
3925  
3926      /**
3927       * Removes a customize panel.
3928       *
3929       * Note that removing the panel doesn't destroy the WP_Customize_Panel instance or remove its filters.
3930       *
3931       * @since 4.0.0
3932       *
3933       * @param string $id Panel ID to remove.
3934       */
3935  	public function remove_panel( $id ) {
3936          // Removing core components this way is _doing_it_wrong().
3937          if ( in_array( $id, $this->components, true ) ) {
3938              _doing_it_wrong(
3939                  __METHOD__,
3940                  sprintf(
3941                      /* translators: 1: Panel ID, 2: Link to 'customize_loaded_components' filter reference. */
3942                      __( 'Removing %1$s manually will cause PHP warnings. Use the %2$s filter instead.' ),
3943                      $id,
3944                      sprintf(
3945                          '<a href="%1$s">%2$s</a>',
3946                          esc_url( 'https://developer.wordpress.org/reference/hooks/customize_loaded_components/' ),
3947                          '<code>customize_loaded_components</code>'
3948                      )
3949                  ),
3950                  '4.5.0'
3951              );
3952          }
3953          unset( $this->panels[ $id ] );
3954      }
3955  
3956      /**
3957       * Registers a customize panel type.
3958       *
3959       * Registered types are eligible to be rendered via JS and created dynamically.
3960       *
3961       * @since 4.3.0
3962       *
3963       * @see WP_Customize_Panel
3964       *
3965       * @param string $panel Name of a custom panel which is a subclass of WP_Customize_Panel.
3966       */
3967  	public function register_panel_type( $panel ) {
3968          $this->registered_panel_types[] = $panel;
3969      }
3970  
3971      /**
3972       * Renders JS templates for all registered panel types.
3973       *
3974       * @since 4.3.0
3975       */
3976  	public function render_panel_templates() {
3977          foreach ( $this->registered_panel_types as $panel_type ) {
3978              $panel = new $panel_type( $this, 'temp', array() );
3979              $panel->print_template();
3980          }
3981      }
3982  
3983      /**
3984       * Adds a customize section.
3985       *
3986       * @since 3.4.0
3987       * @since 4.5.0 Return added WP_Customize_Section instance.
3988       *
3989       * @see WP_Customize_Section::__construct()
3990       *
3991       * @param WP_Customize_Section|string $id   Customize Section object, or ID.
3992       * @param array                       $args Optional. Array of properties for the new Section object.
3993       *                                          See WP_Customize_Section::__construct() for information
3994       *                                          on accepted arguments. Default empty array.
3995       * @return WP_Customize_Section The instance of the section that was added.
3996       */
3997  	public function add_section( $id, $args = array() ) {
3998          if ( $id instanceof WP_Customize_Section ) {
3999              $section = $id;
4000          } else {
4001              $section = new WP_Customize_Section( $this, $id, $args );
4002          }
4003  
4004          $this->sections[ $section->id ] = $section;
4005          return $section;
4006      }
4007  
4008      /**
4009       * Retrieves a customize section.
4010       *
4011       * @since 3.4.0
4012       *
4013       * @param string $id Section ID.
4014       * @return WP_Customize_Section|void The section, if set.
4015       */
4016  	public function get_section( $id ) {
4017          if ( isset( $this->sections[ $id ] ) ) {
4018              return $this->sections[ $id ];
4019          }
4020      }
4021  
4022      /**
4023       * Removes a customize section.
4024       *
4025       * Note that removing the section doesn't destroy the WP_Customize_Section instance or remove its filters.
4026       *
4027       * @since 3.4.0
4028       *
4029       * @param string $id Section ID.
4030       */
4031  	public function remove_section( $id ) {
4032          unset( $this->sections[ $id ] );
4033      }
4034  
4035      /**
4036       * Registers a customize section type.
4037       *
4038       * Registered types are eligible to be rendered via JS and created dynamically.
4039       *
4040       * @since 4.3.0
4041       *
4042       * @see WP_Customize_Section
4043       *
4044       * @param string $section Name of a custom section which is a subclass of WP_Customize_Section.
4045       */
4046  	public function register_section_type( $section ) {
4047          $this->registered_section_types[] = $section;
4048      }
4049  
4050      /**
4051       * Renders JS templates for all registered section types.
4052       *
4053       * @since 4.3.0
4054       */
4055  	public function render_section_templates() {
4056          foreach ( $this->registered_section_types as $section_type ) {
4057              $section = new $section_type( $this, 'temp', array() );
4058              $section->print_template();
4059          }
4060      }
4061  
4062      /**
4063       * Adds a customize control.
4064       *
4065       * @since 3.4.0
4066       * @since 4.5.0 Return added WP_Customize_Control instance.
4067       *
4068       * @see WP_Customize_Control::__construct()
4069       *
4070       * @param WP_Customize_Control|string $id   Customize Control object, or ID.
4071       * @param array                       $args Optional. Array of properties for the new Control object.
4072       *                                          See WP_Customize_Control::__construct() for information
4073       *                                          on accepted arguments. Default empty array.
4074       * @return WP_Customize_Control The instance of the control that was added.
4075       */
4076  	public function add_control( $id, $args = array() ) {
4077          if ( $id instanceof WP_Customize_Control ) {
4078              $control = $id;
4079          } else {
4080              $control = new WP_Customize_Control( $this, $id, $args );
4081          }
4082  
4083          $this->controls[ $control->id ] = $control;
4084          return $control;
4085      }
4086  
4087      /**
4088       * Retrieves a customize control.
4089       *
4090       * @since 3.4.0
4091       *
4092       * @param string $id ID of the control.
4093       * @return WP_Customize_Control|void The control object, if set.
4094       */
4095  	public function get_control( $id ) {
4096          if ( isset( $this->controls[ $id ] ) ) {
4097              return $this->controls[ $id ];
4098          }
4099      }
4100  
4101      /**
4102       * Removes a customize control.
4103       *
4104       * Note that removing the control doesn't destroy the WP_Customize_Control instance or remove its filters.
4105       *
4106       * @since 3.4.0
4107       *
4108       * @param string $id ID of the control.
4109       */
4110  	public function remove_control( $id ) {
4111          unset( $this->controls[ $id ] );
4112      }
4113  
4114      /**
4115       * Registers a customize control type.
4116       *
4117       * Registered types are eligible to be rendered via JS and created dynamically.
4118       *
4119       * @since 4.1.0
4120       *
4121       * @param string $control Name of a custom control which is a subclass of
4122       *                        WP_Customize_Control.
4123       */
4124  	public function register_control_type( $control ) {
4125          $this->registered_control_types[] = $control;
4126      }
4127  
4128      /**
4129       * Renders JS templates for all registered control types.
4130       *
4131       * @since 4.1.0
4132       */
4133  	public function render_control_templates() {
4134          if ( $this->branching() ) {
4135              $l10n = array(
4136                  /* translators: %s: User who is customizing the changeset in customizer. */
4137                  'locked'                => __( '%s is already customizing this changeset. Please wait until they are done to try customizing. Your latest changes have been autosaved.' ),
4138                  /* translators: %s: User who is customizing the changeset in customizer. */
4139                  'locked_allow_override' => __( '%s is already customizing this changeset. Do you want to take over?' ),
4140              );
4141          } else {
4142              $l10n = array(
4143                  /* translators: %s: User who is customizing the changeset in customizer. */
4144                  'locked'                => __( '%s is already customizing this site. Please wait until they are done to try customizing. Your latest changes have been autosaved.' ),
4145                  /* translators: %s: User who is customizing the changeset in customizer. */
4146                  'locked_allow_override' => __( '%s is already customizing this site. Do you want to take over?' ),
4147              );
4148          }
4149  
4150          foreach ( $this->registered_control_types as $control_type ) {
4151              $control = new $control_type(
4152                  $this,
4153                  'temp',
4154                  array(
4155                      'settings' => array(),
4156                  )
4157              );
4158              $control->print_template();
4159          }
4160          ?>
4161  
4162          <script type="text/html" id="tmpl-customize-control-default-content">
4163              <#
4164              var inputId = _.uniqueId( 'customize-control-default-input-' );
4165              var descriptionId = _.uniqueId( 'customize-control-default-description-' );
4166              var describedByAttr = data.description ? ' aria-describedby="' + descriptionId + '" ' : '';
4167              #>
4168              <# switch ( data.type ) {
4169                  case 'checkbox': #>
4170                      <span class="customize-inside-control-row">
4171                          <input
4172                              id="{{ inputId }}"
4173                              {{{ describedByAttr }}}
4174                              type="checkbox"
4175                              value="{{ data.value }}"
4176                              data-customize-setting-key-link="default"
4177                          >
4178                          <label for="{{ inputId }}">
4179                              {{ data.label }}
4180                          </label>
4181                          <# if ( data.description ) { #>
4182                              <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
4183                          <# } #>
4184                      </span>
4185                      <#
4186                      break;
4187                  case 'radio':
4188                      if ( ! data.choices ) {
4189                          return;
4190                      }
4191                      #>
4192                      <# if ( data.label ) { #>
4193                          <label for="{{ inputId }}" class="customize-control-title">
4194                              {{ data.label }}
4195                          </label>
4196                      <# } #>
4197                      <# if ( data.description ) { #>
4198                          <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
4199                      <# } #>
4200                      <# _.each( data.choices, function( val, key ) { #>
4201                          <span class="customize-inside-control-row">
4202                              <#
4203                              var value, text;
4204                              if ( _.isObject( val ) ) {
4205                                  value = val.value;
4206                                  text = val.text;
4207                              } else {
4208                                  value = key;
4209                                  text = val;
4210                              }
4211                              #>
4212                              <input
4213                                  id="{{ inputId + '-' + value }}"
4214                                  type="radio"
4215                                  value="{{ value }}"
4216                                  name="{{ inputId }}"
4217                                  data-customize-setting-key-link="default"
4218                                  {{{ describedByAttr }}}
4219                              >
4220                              <label for="{{ inputId + '-' + value }}">{{ text }}</label>
4221                          </span>
4222                      <# } ); #>
4223                      <#
4224                      break;
4225                  default:
4226                      #>
4227                      <# if ( data.label ) { #>
4228                          <label for="{{ inputId }}" class="customize-control-title">
4229                              {{ data.label }}
4230                          </label>
4231                      <# } #>
4232                      <# if ( data.description ) { #>
4233                          <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
4234                      <# } #>
4235  
4236                      <#
4237                      var inputAttrs = {
4238                          id: inputId,
4239                          'data-customize-setting-key-link': 'default'
4240                      };
4241                      if ( 'textarea' === data.type ) {
4242                          inputAttrs.rows = '5';
4243                      } else if ( 'button' === data.type ) {
4244                          inputAttrs['class'] = 'button button-secondary';
4245                          inputAttrs.type = 'button';
4246                      } else {
4247                          inputAttrs.type = data.type;
4248                      }
4249                      if ( data.description ) {
4250                          inputAttrs['aria-describedby'] = descriptionId;
4251                      }
4252                      _.extend( inputAttrs, data.input_attrs );
4253                      #>
4254  
4255                      <# if ( 'button' === data.type ) { #>
4256                          <button
4257                              <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
4258                                  {{{ key }}}="{{ value }}"
4259                              <# } ); #>
4260                          >{{ inputAttrs.value }}</button>
4261                      <# } else if ( 'textarea' === data.type ) { #>
4262                          <textarea
4263                              <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
4264                                  {{{ key }}}="{{ value }}"
4265                              <# }); #>
4266                          >{{ inputAttrs.value }}</textarea>
4267                      <# } else if ( 'select' === data.type ) { #>
4268                          <# delete inputAttrs.type; #>
4269                          <select
4270                              <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
4271                                  {{{ key }}}="{{ value }}"
4272                              <# }); #>
4273                              >
4274                              <# _.each( data.choices, function( val, key ) { #>
4275                                  <#
4276                                  var value, text;
4277                                  if ( _.isObject( val ) ) {
4278                                      value = val.value;
4279                                      text = val.text;
4280                                  } else {
4281                                      value = key;
4282                                      text = val;
4283                                  }
4284                                  #>
4285                                  <option value="{{ value }}">{{ text }}</option>
4286                              <# } ); #>
4287                          </select>
4288                      <# } else { #>
4289                          <input
4290                              <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
4291                                  {{{ key }}}="{{ value }}"
4292                              <# }); #>
4293                              >
4294                      <# } #>
4295              <# } #>
4296          </script>
4297  
4298          <script type="text/html" id="tmpl-customize-notification">
4299              <li class="notice notice-{{ data.type || 'info' }} {{ data.alt ? 'notice-alt' : '' }} {{ data.dismissible ? 'is-dismissible' : '' }} {{ data.containerClasses || '' }}" data-code="{{ data.code }}" data-type="{{ data.type }}">
4300                  <div class="notification-message">{{{ data.message || data.code }}}</div>
4301                  <# if ( data.dismissible ) { #>
4302                      <button type="button" class="notice-dismiss"><span class="screen-reader-text">
4303                          <?php
4304                          /* translators: Hidden accessibility text. */
4305                          _e( 'Dismiss' );
4306                          ?>
4307                      </span></button>
4308                  <# } #>
4309              </li>
4310          </script>
4311  
4312          <script type="text/html" id="tmpl-customize-changeset-locked-notification">
4313              <li class="notice notice-{{ data.type || 'info' }} {{ data.containerClasses || '' }}" data-code="{{ data.code }}" data-type="{{ data.type }}">
4314                  <div class="notification-message customize-changeset-locked-message {{ data.lockUser.avatar ? 'has-avatar' : '' }}">
4315                      <# if ( data.lockUser.avatar ) { #>
4316                          <img class="customize-changeset-locked-avatar" src="{{ data.lockUser.avatar }}" alt="{{ data.lockUser.name }}" />
4317                      <# } #>
4318                      <p class="currently-editing">
4319                          <# if ( data.message ) { #>
4320                              {{{ data.message }}}
4321                          <# } else if ( data.allowOverride ) { #>
4322                              <?php
4323                              echo esc_html( sprintf( $l10n['locked_allow_override'], '{{ data.lockUser.name }}' ) );
4324                              ?>
4325                          <# } else { #>
4326                              <?php
4327                              echo esc_html( sprintf( $l10n['locked'], '{{ data.lockUser.name }}' ) );
4328                              ?>
4329                          <# } #>
4330                      </p>
4331                      <p class="notice notice-error notice-alt" hidden></p>
4332                      <p class="action-buttons">
4333                          <# if ( data.returnUrl !== data.previewUrl ) { #>
4334                              <a class="button customize-notice-go-back-button" href="{{ data.returnUrl }}"><?php _e( 'Go back' ); ?></a>
4335                          <# } #>
4336                          <a class="button customize-notice-preview-button" href="{{ data.frontendPreviewUrl }}"><?php _e( 'Preview' ); ?></a>
4337                          <# if ( data.allowOverride ) { #>
4338                              <button class="button button-primary wp-tab-last customize-notice-take-over-button"><?php _e( 'Take over' ); ?></button>
4339                          <# } #>
4340                      </p>
4341                  </div>
4342              </li>
4343          </script>
4344  
4345          <script type="text/html" id="tmpl-customize-code-editor-lint-error-notification">
4346              <li class="notice notice-{{ data.type || 'info' }} {{ data.alt ? 'notice-alt' : '' }} {{ data.dismissible ? 'is-dismissible' : '' }} {{ data.containerClasses || '' }}" data-code="{{ data.code }}" data-type="{{ data.type }}">
4347                  <div class="notification-message">{{{ data.message || data.code }}}</div>
4348  
4349                  <p>
4350                      <# var elementId = 'el-' + String( Math.random() ); #>
4351                      <input id="{{ elementId }}" type="checkbox">
4352                      <label for="{{ elementId }}"><?php _e( 'Update anyway, even though it might break your site?' ); ?></label>
4353                  </p>
4354              </li>
4355          </script>
4356  
4357          <?php
4358          /* The following template is obsolete in core but retained for plugins. */
4359          ?>
4360          <script type="text/html" id="tmpl-customize-control-notifications">
4361              <ul>
4362                  <# _.each( data.notifications, function( notification ) { #>
4363                      <li class="notice notice-{{ notification.type || 'info' }} {{ data.altNotice ? 'notice-alt' : '' }}" data-code="{{ notification.code }}" data-type="{{ notification.type }}">{{{ notification.message || notification.code }}}</li>
4364                  <# } ); #>
4365              </ul>
4366          </script>
4367  
4368          <script type="text/html" id="tmpl-customize-preview-link-control" >
4369              <# var elementPrefix = _.uniqueId( 'el' ) + '-' #>
4370              <p class="customize-control-title">
4371                  <?php esc_html_e( 'Share Preview Link' ); ?>
4372              </p>
4373              <p class="description customize-control-description"><?php esc_html_e( 'See how changes would look live on your website, and share the preview with people who can\'t access the Customizer.' ); ?></p>
4374              <div class="customize-control-notifications-container"></div>
4375              <div class="preview-link-wrapper">
4376                  <label for="{{ elementPrefix }}customize-preview-link-input" class="screen-reader-text">
4377                      <?php
4378                      /* translators: Hidden accessibility text. */
4379                      esc_html_e( 'Preview Link' );
4380                      ?>
4381                  </label>
4382                  <a href="" target="">
4383                      <span class="preview-control-element" data-component="url"></span>
4384                      <span class="screen-reader-text">
4385                          <?php
4386                          /* translators: Hidden accessibility text. */
4387                          _e( '(opens in a new tab)' );
4388                          ?>
4389                      </span>
4390                  </a>
4391                  <input id="{{ elementPrefix }}customize-preview-link-input" readonly tabindex="-1" class="preview-control-element" data-component="input">
4392                  <button class="customize-copy-preview-link preview-control-element button button-secondary" data-component="button" data-copy-text="<?php esc_attr_e( 'Copy' ); ?>" data-copied-text="<?php esc_attr_e( 'Copied' ); ?>" ><?php esc_html_e( 'Copy' ); ?></button>
4393              </div>
4394          </script>
4395          <script type="text/html" id="tmpl-customize-selected-changeset-status-control">
4396              <# var inputId = _.uniqueId( 'customize-selected-changeset-status-control-input-' ); #>
4397              <# var descriptionId = _.uniqueId( 'customize-selected-changeset-status-control-description-' ); #>
4398              <# if ( data.label ) { #>
4399                  <label for="{{ inputId }}" class="customize-control-title">{{ data.label }}</label>
4400              <# } #>
4401              <# if ( data.description ) { #>
4402                  <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
4403              <# } #>
4404              <# _.each( data.choices, function( choice ) { #>
4405                  <# var choiceId = inputId + '-' + choice.status; #>
4406                  <span class="customize-inside-control-row">
4407                      <input id="{{ choiceId }}" type="radio" value="{{ choice.status }}" name="{{ inputId }}" data-customize-setting-key-link="default">
4408                      <label for="{{ choiceId }}">{{ choice.label }}</label>
4409                  </span>
4410              <# } ); #>
4411          </script>
4412          <?php
4413      }
4414  
4415      /**
4416       * Helper function to compare two objects by priority, ensuring sort stability via instance_number.
4417       *
4418       * @since 3.4.0
4419       * @deprecated 4.7.0 Use wp_list_sort()
4420       *
4421       * @param WP_Customize_Panel|WP_Customize_Section|WP_Customize_Control $a Object A.
4422       * @param WP_Customize_Panel|WP_Customize_Section|WP_Customize_Control $b Object B.
4423       * @return int
4424       */
4425  	protected function _cmp_priority( $a, $b ) {
4426          _deprecated_function( __METHOD__, '4.7.0', 'wp_list_sort' );
4427  
4428          if ( $a->priority === $b->priority ) {
4429              return $a->instance_number - $b->instance_number;
4430          } else {
4431              return $a->priority - $b->priority;
4432          }
4433      }
4434  
4435      /**
4436       * Prepares panels, sections, and controls.
4437       *
4438       * For each, check if required related components exist,
4439       * whether the user has the necessary capabilities,
4440       * and sort by priority.
4441       *
4442       * @since 3.4.0
4443       */
4444  	public function prepare_controls() {
4445  
4446          $controls       = array();
4447          $this->controls = wp_list_sort(
4448              $this->controls,
4449              array(
4450                  'priority'        => 'ASC',
4451                  'instance_number' => 'ASC',
4452              ),
4453              'ASC',
4454              true
4455          );
4456  
4457          foreach ( $this->controls as $id => $control ) {
4458              if ( ! isset( $this->sections[ $control->section ] ) || ! $control->check_capabilities() ) {
4459                  continue;
4460              }
4461  
4462              $this->sections[ $control->section ]->controls[] = $control;
4463              $controls[ $id ]                                 = $control;
4464          }
4465          $this->controls = $controls;
4466  
4467          // Prepare sections.
4468          $this->sections = wp_list_sort(
4469              $this->sections,
4470              array(
4471                  'priority'        => 'ASC',
4472                  'instance_number' => 'ASC',
4473              ),
4474              'ASC',
4475              true
4476          );
4477          $sections       = array();
4478  
4479          foreach ( $this->sections as $section ) {
4480              if ( ! $section->check_capabilities() ) {
4481                  continue;
4482              }
4483  
4484              $section->controls = wp_list_sort(
4485                  $section->controls,
4486                  array(
4487                      'priority'        => 'ASC',
4488                      'instance_number' => 'ASC',
4489                  )
4490              );
4491  
4492              if ( ! $section->panel ) {
4493                  // Top-level section.
4494                  $sections[ $section->id ] = $section;
4495              } else {
4496                  // This section belongs to a panel.
4497                  if ( isset( $this->panels [ $section->panel ] ) ) {
4498                      $this->panels[ $section->panel ]->sections[ $section->id ] = $section;
4499                  }
4500              }
4501          }
4502          $this->sections = $sections;
4503  
4504          // Prepare panels.
4505          $this->panels = wp_list_sort(
4506              $this->panels,
4507              array(
4508                  'priority'        => 'ASC',
4509                  'instance_number' => 'ASC',
4510              ),
4511              'ASC',
4512              true
4513          );
4514          $panels       = array();
4515  
4516          foreach ( $this->panels as $panel ) {
4517              if ( ! $panel->check_capabilities() ) {
4518                  continue;
4519              }
4520  
4521              $panel->sections      = wp_list_sort(
4522                  $panel->sections,
4523                  array(
4524                      'priority'        => 'ASC',
4525                      'instance_number' => 'ASC',
4526                  ),
4527                  'ASC',
4528                  true
4529              );
4530              $panels[ $panel->id ] = $panel;
4531          }
4532          $this->panels = $panels;
4533  
4534          // Sort panels and top-level sections together.
4535          $this->containers = array_merge( $this->panels, $this->sections );
4536          $this->containers = wp_list_sort(
4537              $this->containers,
4538              array(
4539                  'priority'        => 'ASC',
4540                  'instance_number' => 'ASC',
4541              ),
4542              'ASC',
4543              true
4544          );
4545      }
4546  
4547      /**
4548       * Enqueues scripts for customize controls.
4549       *
4550       * @since 3.4.0
4551       */
4552  	public function enqueue_control_scripts() {
4553          foreach ( $this->controls as $control ) {
4554              $control->enqueue();
4555          }
4556  
4557          if ( ! is_multisite() && ( current_user_can( 'install_themes' ) || current_user_can( 'update_themes' ) || current_user_can( 'delete_themes' ) ) ) {
4558              wp_enqueue_script( 'updates' );
4559              wp_localize_script(
4560                  'updates',
4561                  '_wpUpdatesItemCounts',
4562                  array(
4563                      'totals' => wp_get_update_data(),
4564                  )
4565              );
4566          }
4567      }
4568  
4569      /**
4570       * Determines whether the user agent is iOS.
4571       *
4572       * @since 4.4.0
4573       *
4574       * @return bool Whether the user agent is iOS.
4575       */
4576  	public function is_ios() {
4577          return wp_is_mobile() && preg_match( '/iPad|iPod|iPhone/', $_SERVER['HTTP_USER_AGENT'] );
4578      }
4579  
4580      /**
4581       * Gets the template string for the Customizer pane document title.
4582       *
4583       * @since 4.4.0
4584       *
4585       * @return string The template string for the document title.
4586       */
4587  	public function get_document_title_template() {
4588          if ( $this->is_theme_active() ) {
4589              /* translators: %s: Document title from the preview. */
4590              $document_title_tmpl = __( 'Customize: %s' );
4591          } else {
4592              /* translators: %s: Document title from the preview. */
4593              $document_title_tmpl = __( 'Live Preview: %s' );
4594          }
4595          $document_title_tmpl = html_entity_decode( $document_title_tmpl, ENT_QUOTES, 'UTF-8' ); // Because exported to JS and assigned to document.title.
4596          return $document_title_tmpl;
4597      }
4598  
4599      /**
4600       * Sets the initial URL to be previewed.
4601       *
4602       * URL is validated.
4603       *
4604       * @since 4.4.0
4605       *
4606       * @param string $preview_url URL to be previewed.
4607       */
4608  	public function set_preview_url( $preview_url ) {
4609          $preview_url       = sanitize_url( $preview_url );
4610          $this->preview_url = wp_validate_redirect( $preview_url, home_url( '/' ) );
4611      }
4612  
4613      /**
4614       * Gets the initial URL to be previewed.
4615       *
4616       * @since 4.4.0
4617       *
4618       * @return string URL being previewed.
4619       */
4620  	public function get_preview_url() {
4621          if ( empty( $this->preview_url ) ) {
4622              $preview_url = home_url( '/' );
4623          } else {
4624              $preview_url = $this->preview_url;
4625          }
4626          return $preview_url;
4627      }
4628  
4629      /**
4630       * Determines whether the admin and the frontend are on different domains.
4631       *
4632       * @since 4.7.0
4633       *
4634       * @return bool Whether cross-domain.
4635       */
4636  	public function is_cross_domain() {
4637          $admin_origin = wp_parse_url( admin_url() );
4638          $home_origin  = wp_parse_url( home_url() );
4639          $cross_domain = ( strtolower( $admin_origin['host'] ) !== strtolower( $home_origin['host'] ) );
4640          return $cross_domain;
4641      }
4642  
4643      /**
4644       * Gets URLs allowed to be previewed.
4645       *
4646       * If the front end and the admin are served from the same domain, load the
4647       * preview over ssl if the Customizer is being loaded over ssl. This avoids
4648       * insecure content warnings. This is not attempted if the admin and front end
4649       * are on different domains to avoid the case where the front end doesn't have
4650       * ssl certs. Domain mapping plugins can allow other urls in these conditions
4651       * using the customize_allowed_urls filter.
4652       *
4653       * @since 4.7.0
4654       *
4655       * @return array Allowed URLs.
4656       */
4657  	public function get_allowed_urls() {
4658          $allowed_urls = array( home_url( '/' ) );
4659  
4660          if ( is_ssl() && ! $this->is_cross_domain() ) {
4661              $allowed_urls[] = home_url( '/', 'https' );
4662          }
4663  
4664          /**
4665           * Filters the list of URLs allowed to be clicked and followed in the Customizer preview.
4666           *
4667           * @since 3.4.0
4668           *
4669           * @param string[] $allowed_urls An array of allowed URLs.
4670           */
4671          $allowed_urls = array_unique( apply_filters( 'customize_allowed_urls', $allowed_urls ) );
4672  
4673          return $allowed_urls;
4674      }
4675  
4676      /**
4677       * Gets messenger channel.
4678       *
4679       * @since 4.7.0
4680       *
4681       * @return string Messenger channel.
4682       */
4683  	public function get_messenger_channel() {
4684          return $this->messenger_channel;
4685      }
4686  
4687      /**
4688       * Sets URL to link the user to when closing the Customizer.
4689       *
4690       * URL is validated.
4691       *
4692       * @since 4.4.0
4693       *
4694       * @param string $return_url URL for return link.
4695       */
4696  	public function set_return_url( $return_url ) {
4697          $return_url       = sanitize_url( $return_url );
4698          $return_url       = remove_query_arg( wp_removable_query_args(), $return_url );
4699          $return_url       = wp_validate_redirect( $return_url );
4700          $this->return_url = $return_url;
4701      }
4702  
4703      /**
4704       * Gets URL to link the user to when closing the Customizer.
4705       *
4706       * @since 4.4.0
4707       *
4708       * @global array $_registered_pages
4709       *
4710       * @return string URL for link to close Customizer.
4711       */
4712  	public function get_return_url() {
4713          global $_registered_pages;
4714  
4715          $referer                    = wp_get_referer();
4716          $excluded_referer_basenames = array( 'customize.php', 'wp-login.php' );
4717  
4718          if ( $this->return_url ) {
4719              $return_url = $this->return_url;
4720  
4721              $return_url_basename = wp_basename( parse_url( $this->return_url, PHP_URL_PATH ) );
4722              $return_url_query    = parse_url( $this->return_url, PHP_URL_QUERY );
4723  
4724              if ( 'themes.php' === $return_url_basename && $return_url_query ) {
4725                  parse_str( $return_url_query, $query_vars );
4726  
4727                  /*
4728                   * If the return URL is a page added by a theme to the Appearance menu via add_submenu_page(),
4729                   * verify that it belongs to the active theme, otherwise fall back to the Themes screen.
4730                   */
4731                  if ( isset( $query_vars['page'] ) && ! isset( $_registered_pages[ "appearance_page_{$query_vars['page']}" ] ) ) {
4732                      $return_url = admin_url( 'themes.php' );
4733                  }
4734              }
4735          } elseif ( $referer && ! in_array( wp_basename( parse_url( $referer, PHP_URL_PATH ) ), $excluded_referer_basenames, true ) ) {
4736              $return_url = $referer;
4737          } elseif ( $this->preview_url ) {
4738              $return_url = $this->preview_url;
4739          } else {
4740              $return_url = home_url( '/' );
4741          }
4742  
4743          return $return_url;
4744      }
4745  
4746      /**
4747       * Sets the autofocused constructs.
4748       *
4749       * @since 4.4.0
4750       *
4751       * @param array $autofocus {
4752       *     Mapping of 'panel', 'section', 'control' to the ID which should be autofocused.
4753       *
4754       *     @type string $control ID for control to be autofocused.
4755       *     @type string $section ID for section to be autofocused.
4756       *     @type string $panel   ID for panel to be autofocused.
4757       * }
4758       */
4759  	public function set_autofocus( $autofocus ) {
4760          $this->autofocus = array_filter( wp_array_slice_assoc( $autofocus, array( 'panel', 'section', 'control' ) ), 'is_string' );
4761      }
4762  
4763      /**
4764       * Gets the autofocused constructs.
4765       *
4766       * @since 4.4.0
4767       *
4768       * @return string[] {
4769       *     Mapping of 'panel', 'section', 'control' to the ID which should be autofocused.
4770       *
4771       *     @type string $control ID for control to be autofocused.
4772       *     @type string $section ID for section to be autofocused.
4773       *     @type string $panel   ID for panel to be autofocused.
4774       * }
4775       */
4776  	public function get_autofocus() {
4777          return $this->autofocus;
4778      }
4779  
4780      /**
4781       * Gets nonces for the Customizer.
4782       *
4783       * @since 4.5.0
4784       *
4785       * @return array Nonces.
4786       */
4787  	public function get_nonces() {
4788          $nonces = array(
4789              'save'                     => wp_create_nonce( 'save-customize_' . $this->get_stylesheet() ),
4790              'preview'                  => wp_create_nonce( 'preview-customize_' . $this->get_stylesheet() ),
4791              'switch_themes'            => wp_create_nonce( 'switch_themes' ),
4792              'dismiss_autosave_or_lock' => wp_create_nonce( 'customize_dismiss_autosave_or_lock' ),
4793              'override_lock'            => wp_create_nonce( 'customize_override_changeset_lock' ),
4794              'trash'                    => wp_create_nonce( 'trash_customize_changeset' ),
4795          );
4796  
4797          /**
4798           * Filters nonces for Customizer.
4799           *
4800           * @since 4.2.0
4801           *
4802           * @param string[]             $nonces  Array of refreshed nonces for save and
4803           *                                      preview actions.
4804           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
4805           */
4806          $nonces = apply_filters( 'customize_refresh_nonces', $nonces, $this );
4807  
4808          return $nonces;
4809      }
4810  
4811      /**
4812       * Prints JavaScript settings for parent window.
4813       *
4814       * @since 4.4.0
4815       */
4816  	public function customize_pane_settings() {
4817  
4818          $login_url = add_query_arg(
4819              array(
4820                  'interim-login'   => 1,
4821                  'customize-login' => 1,
4822              ),
4823              wp_login_url()
4824          );
4825  
4826          // Ensure dirty flags are set for modified settings.
4827          foreach ( array_keys( $this->unsanitized_post_values() ) as $setting_id ) {
4828              $setting = $this->get_setting( $setting_id );
4829              if ( $setting ) {
4830                  $setting->dirty = true;
4831              }
4832          }
4833  
4834          $autosave_revision_post  = null;
4835          $autosave_autodraft_post = null;
4836          $changeset_post_id       = $this->changeset_post_id();
4837          if ( ! $this->saved_starter_content_changeset && ! $this->autosaved() ) {
4838              if ( $changeset_post_id ) {
4839                  if ( is_user_logged_in() ) {
4840                      $autosave_revision_post = wp_get_post_autosave( $changeset_post_id, get_current_user_id() );
4841                  }
4842              } else {
4843                  $autosave_autodraft_posts = $this->get_changeset_posts(
4844                      array(
4845                          'posts_per_page'            => 1,
4846                          'post_status'               => 'auto-draft',
4847                          'exclude_restore_dismissed' => true,
4848                      )
4849                  );
4850                  if ( ! empty( $autosave_autodraft_posts ) ) {
4851                      $autosave_autodraft_post = array_shift( $autosave_autodraft_posts );
4852                  }
4853              }
4854          }
4855  
4856          $current_user_can_publish = current_user_can( get_post_type_object( 'customize_changeset' )->cap->publish_posts );
4857  
4858          // @todo Include all of the status labels here from script-loader.php, and then allow it to be filtered.
4859          $status_choices = array();
4860          if ( $current_user_can_publish ) {
4861              $status_choices[] = array(
4862                  'status' => 'publish',
4863                  'label'  => __( 'Publish' ),
4864              );
4865          }
4866          $status_choices[] = array(
4867              'status' => 'draft',
4868              'label'  => __( 'Save Draft' ),
4869          );
4870          if ( $current_user_can_publish ) {
4871              $status_choices[] = array(
4872                  'status' => 'future',
4873                  'label'  => _x( 'Schedule', 'customizer changeset action/button label' ),
4874              );
4875          }
4876  
4877          // Prepare Customizer settings to pass to JavaScript.
4878          $changeset_post = null;
4879          if ( $changeset_post_id ) {
4880              $changeset_post = get_post( $changeset_post_id );
4881          }
4882  
4883          // Determine initial date to be at present or future, not past.
4884          $current_time = current_time( 'mysql', false );
4885          $initial_date = $current_time;
4886          if ( $changeset_post ) {
4887              $initial_date = get_the_time( 'Y-m-d H:i:s', $changeset_post->ID );
4888              if ( $initial_date < $current_time ) {
4889                  $initial_date = $current_time;
4890              }
4891          }
4892  
4893          $lock_user_id = false;
4894          if ( $this->changeset_post_id() ) {
4895              $lock_user_id = wp_check_post_lock( $this->changeset_post_id() );
4896          }
4897  
4898          $settings = array(
4899              'changeset'              => array(
4900                  'uuid'                  => $this->changeset_uuid(),
4901                  'branching'             => $this->branching(),
4902                  'autosaved'             => $this->autosaved(),
4903                  'hasAutosaveRevision'   => ! empty( $autosave_revision_post ),
4904                  'latestAutoDraftUuid'   => $autosave_autodraft_post ? $autosave_autodraft_post->post_name : null,
4905                  'status'                => $changeset_post ? $changeset_post->post_status : '',
4906                  'currentUserCanPublish' => $current_user_can_publish,
4907                  'publishDate'           => $initial_date,
4908                  'statusChoices'         => $status_choices,
4909                  'lockUser'              => $lock_user_id ? $this->get_lock_user_data( $lock_user_id ) : null,
4910              ),
4911              'initialServerDate'      => $current_time,
4912              'dateFormat'             => get_option( 'date_format' ),
4913              'timeFormat'             => get_option( 'time_format' ),
4914              'initialServerTimestamp' => floor( microtime( true ) * 1000 ),
4915              'initialClientTimestamp' => -1, // To be set with JS below.
4916              'timeouts'               => array(
4917                  'windowRefresh'           => 250,
4918                  'changesetAutoSave'       => AUTOSAVE_INTERVAL * 1000,
4919                  'keepAliveCheck'          => 2500,
4920                  'reflowPaneContents'      => 100,
4921                  'previewFrameSensitivity' => 2000,
4922              ),
4923              'theme'                  => array(
4924                  'stylesheet'  => $this->get_stylesheet(),
4925                  'active'      => $this->is_theme_active(),
4926                  '_canInstall' => current_user_can( 'install_themes' ),
4927              ),
4928              'url'                    => array(
4929                  'preview'       => sanitize_url( $this->get_preview_url() ),
4930                  'return'        => sanitize_url( $this->get_return_url() ),
4931                  'parent'        => sanitize_url( admin_url() ),
4932                  'activated'     => sanitize_url( home_url( '/' ) ),
4933                  'ajax'          => sanitize_url( admin_url( 'admin-ajax.php', 'relative' ) ),
4934                  'allowed'       => array_map( 'sanitize_url', $this->get_allowed_urls() ),
4935                  'isCrossDomain' => $this->is_cross_domain(),
4936                  'home'          => sanitize_url( home_url( '/' ) ),
4937                  'login'         => sanitize_url( $login_url ),
4938              ),
4939              'browser'                => array(
4940                  'mobile' => wp_is_mobile(),
4941                  'ios'    => $this->is_ios(),
4942              ),
4943              'panels'                 => array(),
4944              'sections'               => array(),
4945              'nonce'                  => $this->get_nonces(),
4946              'autofocus'              => $this->get_autofocus(),
4947              'documentTitleTmpl'      => $this->get_document_title_template(),
4948              'previewableDevices'     => $this->get_previewable_devices(),
4949              'l10n'                   => array(
4950                  'confirmDeleteTheme'   => __( 'Are you sure you want to delete this theme?' ),
4951                  /* translators: %d: Number of theme search results, which cannot currently consider singular vs. plural forms. */
4952                  'themeSearchResults'   => __( '%d themes found' ),
4953                  /* translators: %d: Number of themes being displayed, which cannot currently consider singular vs. plural forms. */
4954                  'announceThemeCount'   => __( 'Displaying %d themes' ),
4955                  /* translators: %s: Theme name. */
4956                  'announceThemeDetails' => __( 'Showing details for theme: %s' ),
4957              ),
4958          );
4959  
4960          // Temporarily disable installation in Customizer. See #42184.
4961          $filesystem_method = get_filesystem_method();
4962          ob_start();
4963          $filesystem_credentials_are_stored = request_filesystem_credentials( self_admin_url() );
4964          ob_end_clean();
4965          if ( 'direct' !== $filesystem_method && ! $filesystem_credentials_are_stored ) {
4966              $settings['theme']['_filesystemCredentialsNeeded'] = true;
4967          }
4968  
4969          // Prepare Customize Section objects to pass to JavaScript.
4970          foreach ( $this->sections() as $id => $section ) {
4971              if ( $section->check_capabilities() ) {
4972                  $settings['sections'][ $id ] = $section->json();
4973              }
4974          }
4975  
4976          // Prepare Customize Panel objects to pass to JavaScript.
4977          foreach ( $this->panels() as $panel_id => $panel ) {
4978              if ( $panel->check_capabilities() ) {
4979                  $settings['panels'][ $panel_id ] = $panel->json();
4980                  foreach ( $panel->sections as $section_id => $section ) {
4981                      if ( $section->check_capabilities() ) {
4982                          $settings['sections'][ $section_id ] = $section->json();
4983                      }
4984                  }
4985              }
4986          }
4987  
4988          ob_start();
4989          ?>
4990          <script>
4991              var _wpCustomizeSettings = <?php echo wp_json_encode( $settings ); ?>;
4992              _wpCustomizeSettings.initialClientTimestamp = _.now();
4993              _wpCustomizeSettings.controls = {};
4994              _wpCustomizeSettings.settings = {};
4995              <?php
4996  
4997              // Serialize settings one by one to improve memory usage.
4998              echo "(function ( s ){\n";
4999              foreach ( $this->settings() as $setting ) {
5000                  if ( $setting->check_capabilities() ) {
5001                      printf(
5002                          "s[%s] = %s;\n",
5003                          wp_json_encode( $setting->id ),
5004                          wp_json_encode( $setting->json() )
5005                      );
5006                  }
5007              }
5008              echo "})( _wpCustomizeSettings.settings );\n";
5009  
5010              // Serialize controls one by one to improve memory usage.
5011              echo "(function ( c ){\n";
5012              foreach ( $this->controls() as $control ) {
5013                  if ( $control->check_capabilities() ) {
5014                      printf(
5015                          "c[%s] = %s;\n",
5016                          wp_json_encode( $control->id ),
5017                          wp_json_encode( $control->json() )
5018                      );
5019                  }
5020              }
5021              echo "})( _wpCustomizeSettings.controls );\n";
5022              ?>
5023          </script>
5024          <?php
5025          wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
5026      }
5027  
5028      /**
5029       * Returns a list of devices to allow previewing.
5030       *
5031       * @since 4.5.0
5032       *
5033       * @return array List of devices with labels and default setting.
5034       */
5035  	public function get_previewable_devices() {
5036          $devices = array(
5037              'desktop' => array(
5038                  'label'   => __( 'Enter desktop preview mode' ),
5039                  'default' => true,
5040              ),
5041              'tablet'  => array(
5042                  'label' => __( 'Enter tablet preview mode' ),
5043              ),
5044              'mobile'  => array(
5045                  'label' => __( 'Enter mobile preview mode' ),
5046              ),
5047          );
5048  
5049          /**
5050           * Filters the available devices to allow previewing in the Customizer.
5051           *
5052           * @since 4.5.0
5053           *
5054           * @see WP_Customize_Manager::get_previewable_devices()
5055           *
5056           * @param array $devices List of devices with labels and default setting.
5057           */
5058          $devices = apply_filters( 'customize_previewable_devices', $devices );
5059  
5060          return $devices;
5061      }
5062  
5063      /**
5064       * Registers some default controls.
5065       *
5066       * @since 3.4.0
5067       */
5068  	public function register_controls() {
5069  
5070          /* Themes (controls are loaded via ajax) */
5071  
5072          $this->add_panel(
5073              new WP_Customize_Themes_Panel(
5074                  $this,
5075                  'themes',
5076                  array(
5077                      'title'       => $this->theme()->display( 'Name' ),
5078                      'description' => (
5079                      '<p>' . __( 'Looking for a theme? You can search or browse the WordPress.org theme directory, install and preview themes, then activate them right here.' ) . '</p>' .
5080                      '<p>' . __( 'While previewing a new theme, you can continue to tailor things like widgets and menus, and explore theme-specific options.' ) . '</p>'
5081                      ),
5082                      'capability'  => 'switch_themes',
5083                      'priority'    => 0,
5084                  )
5085              )
5086          );
5087  
5088          $this->add_section(
5089              new WP_Customize_Themes_Section(
5090                  $this,
5091                  'installed_themes',
5092                  array(
5093                      'title'      => __( 'Installed themes' ),
5094                      'action'     => 'installed',
5095                      'capability' => 'switch_themes',
5096                      'panel'      => 'themes',
5097                      'priority'   => 0,
5098                  )
5099              )
5100          );
5101  
5102          if ( ! is_multisite() ) {
5103              $this->add_section(
5104                  new WP_Customize_Themes_Section(
5105                      $this,
5106                      'wporg_themes',
5107                      array(
5108                          'title'       => __( 'WordPress.org themes' ),
5109                          'action'      => 'wporg',
5110                          'filter_type' => 'remote',
5111                          'capability'  => 'install_themes',
5112                          'panel'       => 'themes',
5113                          'priority'    => 5,
5114                      )
5115                  )
5116              );
5117          }
5118  
5119          // Themes Setting (unused - the theme is considerably more fundamental to the Customizer experience).
5120          $this->add_setting(
5121              new WP_Customize_Filter_Setting(
5122                  $this,
5123                  'active_theme',
5124                  array(
5125                      'capability' => 'switch_themes',
5126                  )
5127              )
5128          );
5129  
5130          /* Site Identity */
5131  
5132          $this->add_section(
5133              'title_tagline',
5134              array(
5135                  'title'    => __( 'Site Identity' ),
5136                  'priority' => 20,
5137              )
5138          );
5139  
5140          $this->add_setting(
5141              'blogname',
5142              array(
5143                  'default'    => get_option( 'blogname' ),
5144                  'type'       => 'option',
5145                  'capability' => 'manage_options',
5146              )
5147          );
5148  
5149          $this->add_control(
5150              'blogname',
5151              array(
5152                  'label'   => __( 'Site Title' ),
5153                  'section' => 'title_tagline',
5154              )
5155          );
5156  
5157          $this->add_setting(
5158              'blogdescription',
5159              array(
5160                  'default'    => get_option( 'blogdescription' ),
5161                  'type'       => 'option',
5162                  'capability' => 'manage_options',
5163              )
5164          );
5165  
5166          $this->add_control(
5167              'blogdescription',
5168              array(
5169                  'label'   => __( 'Tagline' ),
5170                  'section' => 'title_tagline',
5171              )
5172          );
5173  
5174          // Add a setting to hide header text if the theme doesn't support custom headers.
5175          if ( ! current_theme_supports( 'custom-header', 'header-text' ) ) {
5176              $this->add_setting(
5177                  'header_text',
5178                  array(
5179                      'theme_supports'    => array( 'custom-logo', 'header-text' ),
5180                      'default'           => 1,
5181                      'sanitize_callback' => 'absint',
5182                  )
5183              );
5184  
5185              $this->add_control(
5186                  'header_text',
5187                  array(
5188                      'label'    => __( 'Display Site Title and Tagline' ),
5189                      'section'  => 'title_tagline',
5190                      'settings' => 'header_text',
5191                      'type'     => 'checkbox',
5192                  )
5193              );
5194          }
5195  
5196          $this->add_setting(
5197              'site_icon',
5198              array(
5199                  'type'       => 'option',
5200                  'capability' => 'manage_options',
5201                  'transport'  => 'postMessage', // Previewed with JS in the Customizer controls window.
5202              )
5203          );
5204  
5205          $this->add_control(
5206              new WP_Customize_Site_Icon_Control(
5207                  $this,
5208                  'site_icon',
5209                  array(
5210                      'label'       => __( 'Site Icon' ),
5211                      'description' => sprintf(
5212                          /* translators: 1: pixel value for icon size. 2: pixel value for icon size. */
5213                          '<p>' . __( 'The Site Icon is what you see in browser tabs, bookmark bars, and within the WordPress mobile apps. It should be square and at least <code>%1$s by %2$s</code> pixels.' ) . '</p>',
5214                          512,
5215                          512
5216                      ),
5217                      'section'     => 'title_tagline',
5218                      'priority'    => 60,
5219                      'height'      => 512,
5220                      'width'       => 512,
5221                  )
5222              )
5223          );
5224  
5225          $this->add_setting(
5226              'custom_logo',
5227              array(
5228                  'theme_supports' => array( 'custom-logo' ),
5229                  'transport'      => 'postMessage',
5230              )
5231          );
5232  
5233          $custom_logo_args = get_theme_support( 'custom-logo' );
5234          $this->add_control(
5235              new WP_Customize_Cropped_Image_Control(
5236                  $this,
5237                  'custom_logo',
5238                  array(
5239                      'label'         => __( 'Logo' ),
5240                      'section'       => 'title_tagline',
5241                      'priority'      => 8,
5242                      'height'        => isset( $custom_logo_args[0]['height'] ) ? $custom_logo_args[0]['height'] : null,
5243                      'width'         => isset( $custom_logo_args[0]['width'] ) ? $custom_logo_args[0]['width'] : null,
5244                      'flex_height'   => isset( $custom_logo_args[0]['flex-height'] ) ? $custom_logo_args[0]['flex-height'] : null,
5245                      'flex_width'    => isset( $custom_logo_args[0]['flex-width'] ) ? $custom_logo_args[0]['flex-width'] : null,
5246                      'button_labels' => array(
5247                          'select'       => __( 'Select logo' ),
5248                          'change'       => __( 'Change logo' ),
5249                          'remove'       => __( 'Remove' ),
5250                          'default'      => __( 'Default' ),
5251                          'placeholder'  => __( 'No logo selected' ),
5252                          'frame_title'  => __( 'Select logo' ),
5253                          'frame_button' => __( 'Choose logo' ),
5254                      ),
5255                  )
5256              )
5257          );
5258  
5259          $this->selective_refresh->add_partial(
5260              'custom_logo',
5261              array(
5262                  'settings'            => array( 'custom_logo' ),
5263                  'selector'            => '.custom-logo-link',
5264                  'render_callback'     => array( $this, '_render_custom_logo_partial' ),
5265                  'container_inclusive' => true,
5266              )
5267          );
5268  
5269          /* Colors */
5270  
5271          $this->add_section(
5272              'colors',
5273              array(
5274                  'title'    => __( 'Colors' ),
5275                  'priority' => 40,
5276              )
5277          );
5278  
5279          $this->add_setting(
5280              'header_textcolor',
5281              array(
5282                  'theme_supports'       => array( 'custom-header', 'header-text' ),
5283                  'default'              => get_theme_support( 'custom-header', 'default-text-color' ),
5284  
5285                  'sanitize_callback'    => array( $this, '_sanitize_header_textcolor' ),
5286                  'sanitize_js_callback' => 'maybe_hash_hex_color',
5287              )
5288          );
5289  
5290          // Input type: checkbox, with custom value.
5291          $this->add_control(
5292              'display_header_text',
5293              array(
5294                  'settings' => 'header_textcolor',
5295                  'label'    => __( 'Display Site Title and Tagline' ),
5296                  'section'  => 'title_tagline',
5297                  'type'     => 'checkbox',
5298                  'priority' => 40,
5299              )
5300          );
5301  
5302          $this->add_control(
5303              new WP_Customize_Color_Control(
5304                  $this,
5305                  'header_textcolor',
5306                  array(
5307                      'label'   => __( 'Header Text Color' ),
5308                      'section' => 'colors',
5309                  )
5310              )
5311          );
5312  
5313          // Input type: color, with sanitize_callback.
5314          $this->add_setting(
5315              'background_color',
5316              array(
5317                  'default'              => get_theme_support( 'custom-background', 'default-color' ),
5318                  'theme_supports'       => 'custom-background',
5319  
5320                  'sanitize_callback'    => 'sanitize_hex_color_no_hash',
5321                  'sanitize_js_callback' => 'maybe_hash_hex_color',
5322              )
5323          );
5324  
5325          $this->add_control(
5326              new WP_Customize_Color_Control(
5327                  $this,
5328                  'background_color',
5329                  array(
5330                      'label'   => __( 'Background Color' ),
5331                      'section' => 'colors',
5332                  )
5333              )
5334          );
5335  
5336          /* Custom Header */
5337  
5338          if ( current_theme_supports( 'custom-header', 'video' ) ) {
5339              $title       = __( 'Header Media' );
5340              $description = '<p>' . __( 'If you add a video, the image will be used as a fallback while the video loads.' ) . '</p>';
5341  
5342              $width  = absint( get_theme_support( 'custom-header', 'width' ) );
5343              $height = absint( get_theme_support( 'custom-header', 'height' ) );
5344              if ( $width && $height ) {
5345                  $control_description = sprintf(
5346                      /* translators: 1: .mp4, 2: Header size in pixels. */
5347                      __( 'Upload your video in %1$s format and minimize its file size for best results. Your theme recommends dimensions of %2$s pixels.' ),
5348                      '<code>.mp4</code>',
5349                      sprintf( '<strong>%s &times; %s</strong>', $width, $height )
5350                  );
5351              } elseif ( $width ) {
5352                  $control_description = sprintf(
5353                      /* translators: 1: .mp4, 2: Header width in pixels. */
5354                      __( 'Upload your video in %1$s format and minimize its file size for best results. Your theme recommends a width of %2$s pixels.' ),
5355                      '<code>.mp4</code>',
5356                      sprintf( '<strong>%s</strong>', $width )
5357                  );
5358              } else {
5359                  $control_description = sprintf(
5360                      /* translators: 1: .mp4, 2: Header height in pixels. */
5361                      __( 'Upload your video in %1$s format and minimize its file size for best results. Your theme recommends a height of %2$s pixels.' ),
5362                      '<code>.mp4</code>',
5363                      sprintf( '<strong>%s</strong>', $height )
5364                  );
5365              }
5366          } else {
5367              $title               = __( 'Header Image' );
5368              $description         = '';
5369              $control_description = '';
5370          }
5371  
5372          $this->add_section(
5373              'header_image',
5374              array(
5375                  'title'          => $title,
5376                  'description'    => $description,
5377                  'theme_supports' => 'custom-header',
5378                  'priority'       => 60,
5379              )
5380          );
5381  
5382          $this->add_setting(
5383              'header_video',
5384              array(
5385                  'theme_supports'    => array( 'custom-header', 'video' ),
5386                  'transport'         => 'postMessage',
5387                  'sanitize_callback' => 'absint',
5388                  'validate_callback' => array( $this, '_validate_header_video' ),
5389              )
5390          );
5391  
5392          $this->add_setting(
5393              'external_header_video',
5394              array(
5395                  'theme_supports'    => array( 'custom-header', 'video' ),
5396                  'transport'         => 'postMessage',
5397                  'sanitize_callback' => array( $this, '_sanitize_external_header_video' ),
5398                  'validate_callback' => array( $this, '_validate_external_header_video' ),
5399              )
5400          );
5401  
5402          $this->add_setting(
5403              new WP_Customize_Filter_Setting(
5404                  $this,
5405                  'header_image',
5406                  array(
5407                      'default'        => sprintf( get_theme_support( 'custom-header', 'default-image' ), get_template_directory_uri(), get_stylesheet_directory_uri() ),
5408                      'theme_supports' => 'custom-header',
5409                  )
5410              )
5411          );
5412  
5413          $this->add_setting(
5414              new WP_Customize_Header_Image_Setting(
5415                  $this,
5416                  'header_image_data',
5417                  array(
5418                      'theme_supports' => 'custom-header',
5419                  )
5420              )
5421          );
5422  
5423          /*
5424           * Switch image settings to postMessage when video support is enabled since
5425           * it entails that the_custom_header_markup() will be used, and thus selective
5426           * refresh can be utilized.
5427           */
5428          if ( current_theme_supports( 'custom-header', 'video' ) ) {
5429              $this->get_setting( 'header_image' )->transport      = 'postMessage';
5430              $this->get_setting( 'header_image_data' )->transport = 'postMessage';
5431          }
5432  
5433          $this->add_control(
5434              new WP_Customize_Media_Control(
5435                  $this,
5436                  'header_video',
5437                  array(
5438                      'theme_supports'  => array( 'custom-header', 'video' ),
5439                      'label'           => __( 'Header Video' ),
5440                      'description'     => $control_description,
5441                      'section'         => 'header_image',
5442                      'mime_type'       => 'video',
5443                      'active_callback' => 'is_header_video_active',
5444                  )
5445              )
5446          );
5447  
5448          $this->add_control(
5449              'external_header_video',
5450              array(
5451                  'theme_supports'  => array( 'custom-header', 'video' ),
5452                  'type'            => 'url',
5453                  'description'     => __( 'Or, enter a YouTube URL:' ),
5454                  'section'         => 'header_image',
5455                  'active_callback' => 'is_header_video_active',
5456              )
5457          );
5458  
5459          $this->add_control( new WP_Customize_Header_Image_Control( $this ) );
5460  
5461          $this->selective_refresh->add_partial(
5462              'custom_header',
5463              array(
5464                  'selector'            => '#wp-custom-header',
5465                  'render_callback'     => 'the_custom_header_markup',
5466                  'settings'            => array( 'header_video', 'external_header_video', 'header_image' ), // The image is used as a video fallback here.
5467                  'container_inclusive' => true,
5468              )
5469          );
5470  
5471          /* Custom Background */
5472  
5473          $this->add_section(
5474              'background_image',
5475              array(
5476                  'title'          => __( 'Background Image' ),
5477                  'theme_supports' => 'custom-background',
5478                  'priority'       => 80,
5479              )
5480          );
5481  
5482          $this->add_setting(
5483              'background_image',
5484              array(
5485                  'default'           => get_theme_support( 'custom-background', 'default-image' ),
5486                  'theme_supports'    => 'custom-background',
5487                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5488              )
5489          );
5490  
5491          $this->add_setting(
5492              new WP_Customize_Background_Image_Setting(
5493                  $this,
5494                  'background_image_thumb',
5495                  array(
5496                      'theme_supports'    => 'custom-background',
5497                      'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5498                  )
5499              )
5500          );
5501  
5502          $this->add_control( new WP_Customize_Background_Image_Control( $this ) );
5503  
5504          $this->add_setting(
5505              'background_preset',
5506              array(
5507                  'default'           => get_theme_support( 'custom-background', 'default-preset' ),
5508                  'theme_supports'    => 'custom-background',
5509                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5510              )
5511          );
5512  
5513          $this->add_control(
5514              'background_preset',
5515              array(
5516                  'label'   => _x( 'Preset', 'Background Preset' ),
5517                  'section' => 'background_image',
5518                  'type'    => 'select',
5519                  'choices' => array(
5520                      'default' => _x( 'Default', 'Default Preset' ),
5521                      'fill'    => __( 'Fill Screen' ),
5522                      'fit'     => __( 'Fit to Screen' ),
5523                      'repeat'  => _x( 'Repeat', 'Repeat Image' ),
5524                      'custom'  => _x( 'Custom', 'Custom Preset' ),
5525                  ),
5526              )
5527          );
5528  
5529          $this->add_setting(
5530              'background_position_x',
5531              array(
5532                  'default'           => get_theme_support( 'custom-background', 'default-position-x' ),
5533                  'theme_supports'    => 'custom-background',
5534                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5535              )
5536          );
5537  
5538          $this->add_setting(
5539              'background_position_y',
5540              array(
5541                  'default'           => get_theme_support( 'custom-background', 'default-position-y' ),
5542                  'theme_supports'    => 'custom-background',
5543                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5544              )
5545          );
5546  
5547          $this->add_control(
5548              new WP_Customize_Background_Position_Control(
5549                  $this,
5550                  'background_position',
5551                  array(
5552                      'label'    => __( 'Image Position' ),
5553                      'section'  => 'background_image',
5554                      'settings' => array(
5555                          'x' => 'background_position_x',
5556                          'y' => 'background_position_y',
5557                      ),
5558                  )
5559              )
5560          );
5561  
5562          $this->add_setting(
5563              'background_size',
5564              array(
5565                  'default'           => get_theme_support( 'custom-background', 'default-size' ),
5566                  'theme_supports'    => 'custom-background',
5567                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5568              )
5569          );
5570  
5571          $this->add_control(
5572              'background_size',
5573              array(
5574                  'label'   => __( 'Image Size' ),
5575                  'section' => 'background_image',
5576                  'type'    => 'select',
5577                  'choices' => array(
5578                      'auto'    => _x( 'Original', 'Original Size' ),
5579                      'contain' => __( 'Fit to Screen' ),
5580                      'cover'   => __( 'Fill Screen' ),
5581                  ),
5582              )
5583          );
5584  
5585          $this->add_setting(
5586              'background_repeat',
5587              array(
5588                  'default'           => get_theme_support( 'custom-background', 'default-repeat' ),
5589                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5590                  'theme_supports'    => 'custom-background',
5591              )
5592          );
5593  
5594          $this->add_control(
5595              'background_repeat',
5596              array(
5597                  'label'   => __( 'Repeat Background Image' ),
5598                  'section' => 'background_image',
5599                  'type'    => 'checkbox',
5600              )
5601          );
5602  
5603          $this->add_setting(
5604              'background_attachment',
5605              array(
5606                  'default'           => get_theme_support( 'custom-background', 'default-attachment' ),
5607                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5608                  'theme_supports'    => 'custom-background',
5609              )
5610          );
5611  
5612          $this->add_control(
5613              'background_attachment',
5614              array(
5615                  'label'   => __( 'Scroll with Page' ),
5616                  'section' => 'background_image',
5617                  'type'    => 'checkbox',
5618              )
5619          );
5620  
5621          /*
5622           * If the theme is using the default background callback, we can update
5623           * the background CSS using postMessage.
5624           */
5625          if ( get_theme_support( 'custom-background', 'wp-head-callback' ) === '_custom_background_cb' ) {
5626              foreach ( array( 'color', 'image', 'preset', 'position_x', 'position_y', 'size', 'repeat', 'attachment' ) as $prop ) {
5627                  $this->get_setting( 'background_' . $prop )->transport = 'postMessage';
5628              }
5629          }
5630  
5631          /*
5632           * Static Front Page
5633           * See also https://core.trac.wordpress.org/ticket/19627 which introduces the static-front-page theme_support.
5634           * The following replicates behavior from options-reading.php.
5635           */
5636  
5637          $this->add_section(
5638              'static_front_page',
5639              array(
5640                  'title'           => __( 'Homepage Settings' ),
5641                  'priority'        => 120,
5642                  'description'     => __( 'You can choose what&#8217;s displayed on the homepage of your site. It can be posts in reverse chronological order (classic blog), or a fixed/static page. To set a static homepage, you first need to create two Pages. One will become the homepage, and the other will be where your posts are displayed.' ),
5643                  'active_callback' => array( $this, 'has_published_pages' ),
5644              )
5645          );
5646  
5647          $this->add_setting(
5648              'show_on_front',
5649              array(
5650                  'default'    => get_option( 'show_on_front' ),
5651                  'capability' => 'manage_options',
5652                  'type'       => 'option',
5653              )
5654          );
5655  
5656          $this->add_control(
5657              'show_on_front',
5658              array(
5659                  'label'   => __( 'Your homepage displays' ),
5660                  'section' => 'static_front_page',
5661                  'type'    => 'radio',
5662                  'choices' => array(
5663                      'posts' => __( 'Your latest posts' ),
5664                      'page'  => __( 'A static page' ),
5665                  ),
5666              )
5667          );
5668  
5669          $this->add_setting(
5670              'page_on_front',
5671              array(
5672                  'type'       => 'option',
5673                  'capability' => 'manage_options',
5674              )
5675          );
5676  
5677          $this->add_control(
5678              'page_on_front',
5679              array(
5680                  'label'          => __( 'Homepage' ),
5681                  'section'        => 'static_front_page',
5682                  'type'           => 'dropdown-pages',
5683                  'allow_addition' => true,
5684              )
5685          );
5686  
5687          $this->add_setting(
5688              'page_for_posts',
5689              array(
5690                  'type'       => 'option',
5691                  'capability' => 'manage_options',
5692              )
5693          );
5694  
5695          $this->add_control(
5696              'page_for_posts',
5697              array(
5698                  'label'          => __( 'Posts page' ),
5699                  'section'        => 'static_front_page',
5700                  'type'           => 'dropdown-pages',
5701                  'allow_addition' => true,
5702              )
5703          );
5704  
5705          /* Custom CSS */
5706          $section_description  = '<p>';
5707          $section_description .= __( 'Add your own CSS code here to customize the appearance and layout of your site.' );
5708          $section_description .= sprintf(
5709              ' <a href="%1$s" class="external-link" target="_blank">%2$s<span class="screen-reader-text"> %3$s</span></a>',
5710              esc_url( __( 'https://developer.wordpress.org/advanced-administration/wordpress/css/' ) ),
5711              __( 'Learn more about CSS' ),
5712              /* translators: Hidden accessibility text. */
5713              __( '(opens in a new tab)' )
5714          );
5715          $section_description .= '</p>';
5716  
5717          $section_description .= '<p id="editor-keyboard-trap-help-1">' . __( 'When using a keyboard to navigate:' ) . '</p>';
5718          $section_description .= '<ul>';
5719          $section_description .= '<li id="editor-keyboard-trap-help-2">' . __( 'In the editing area, the Tab key enters a tab character.' ) . '</li>';
5720          $section_description .= '<li id="editor-keyboard-trap-help-3">' . __( 'To move away from this area, press the Esc key followed by the Tab key.' ) . '</li>';
5721          $section_description .= '<li id="editor-keyboard-trap-help-4">' . __( 'Screen reader users: when in forms mode, you may need to press the Esc key twice.' ) . '</li>';
5722          $section_description .= '</ul>';
5723  
5724          if ( 'false' !== wp_get_current_user()->syntax_highlighting ) {
5725              $section_description .= '<p>';
5726              $section_description .= sprintf(
5727                  /* translators: 1: Link to user profile, 2: Additional link attributes, 3: Accessibility text. */
5728                  __( 'The edit field automatically highlights code syntax. You can disable this in your <a href="%1$s" %2$s>user profile%3$s</a> to work in plain text mode.' ),
5729                  esc_url( get_edit_profile_url() ),
5730                  'class="external-link" target="_blank"',
5731                  sprintf(
5732                      '<span class="screen-reader-text"> %s</span>',
5733                      /* translators: Hidden accessibility text. */
5734                      __( '(opens in a new tab)' )
5735                  )
5736              );
5737              $section_description .= '</p>';
5738          }
5739  
5740          $section_description .= '<p class="section-description-buttons">';
5741          $section_description .= '<button type="button" class="button-link section-description-close">' . __( 'Close' ) . '</button>';
5742          $section_description .= '</p>';
5743  
5744          $this->add_section(
5745              'custom_css',
5746              array(
5747                  'title'              => __( 'Additional CSS' ),
5748                  'priority'           => 200,
5749                  'description_hidden' => true,
5750                  'description'        => $section_description,
5751              )
5752          );
5753  
5754          $custom_css_setting = new WP_Customize_Custom_CSS_Setting(
5755              $this,
5756              sprintf( 'custom_css[%s]', get_stylesheet() ),
5757              array(
5758                  'capability' => 'edit_css',
5759                  'default'    => '',
5760              )
5761          );
5762          $this->add_setting( $custom_css_setting );
5763  
5764          $this->add_control(
5765              new WP_Customize_Code_Editor_Control(
5766                  $this,
5767                  'custom_css',
5768                  array(
5769                      'label'       => __( 'CSS code' ),
5770                      'section'     => 'custom_css',
5771                      'settings'    => array( 'default' => $custom_css_setting->id ),
5772                      'code_type'   => 'text/css',
5773                      'input_attrs' => array(
5774                          'aria-describedby' => 'editor-keyboard-trap-help-1 editor-keyboard-trap-help-2 editor-keyboard-trap-help-3 editor-keyboard-trap-help-4',
5775                      ),
5776                  )
5777              )
5778          );
5779      }
5780  
5781      /**
5782       * Returns whether there are published pages.
5783       *
5784       * Used as active callback for static front page section and controls.
5785       *
5786       * @since 4.7.0
5787       *
5788       * @return bool Whether there are published (or to be published) pages.
5789       */
5790  	public function has_published_pages() {
5791  
5792          $setting = $this->get_setting( 'nav_menus_created_posts' );
5793          if ( $setting ) {
5794              foreach ( $setting->value() as $post_id ) {
5795                  if ( 'page' === get_post_type( $post_id ) ) {
5796                      return true;
5797                  }
5798              }
5799          }
5800  
5801          return 0 !== count(
5802              get_pages(
5803                  array(
5804                      'number'       => 1,
5805                      'hierarchical' => 0,
5806                  )
5807              )
5808          );
5809      }
5810  
5811      /**
5812       * Adds settings from the POST data that were not added with code, e.g. dynamically-created settings for Widgets
5813       *
5814       * @since 4.2.0
5815       *
5816       * @see add_dynamic_settings()
5817       */
5818  	public function register_dynamic_settings() {
5819          $setting_ids = array_keys( $this->unsanitized_post_values() );
5820          $this->add_dynamic_settings( $setting_ids );
5821      }
5822  
5823      /**
5824       * Loads themes into the theme browsing/installation UI.
5825       *
5826       * @since 4.9.0
5827       */
5828  	public function handle_load_themes_request() {
5829          check_ajax_referer( 'switch_themes', 'nonce' );
5830  
5831          if ( ! current_user_can( 'switch_themes' ) ) {
5832              wp_die( -1 );
5833          }
5834  
5835          if ( empty( $_POST['theme_action'] ) ) {
5836              wp_send_json_error( 'missing_theme_action' );
5837          }
5838          $theme_action = sanitize_key( $_POST['theme_action'] );
5839          $themes       = array();
5840          $args         = array();
5841  
5842          // Define query filters based on user input.
5843          if ( ! array_key_exists( 'search', $_POST ) ) {
5844              $args['search'] = '';
5845          } else {
5846              $args['search'] = sanitize_text_field( wp_unslash( $_POST['search'] ) );
5847          }
5848  
5849          if ( ! array_key_exists( 'tags', $_POST ) ) {
5850              $args['tag'] = '';
5851          } else {
5852              $args['tag'] = array_map( 'sanitize_text_field', wp_unslash( (array) $_POST['tags'] ) );
5853          }
5854  
5855          if ( ! array_key_exists( 'page', $_POST ) ) {
5856              $args['page'] = 1;
5857          } else {
5858              $args['page'] = absint( $_POST['page'] );
5859          }
5860  
5861          require_once  ABSPATH . 'wp-admin/includes/theme.php';
5862  
5863          if ( 'installed' === $theme_action ) {
5864  
5865              // Load all installed themes from wp_prepare_themes_for_js().
5866              $themes = array( 'themes' => array() );
5867              foreach ( wp_prepare_themes_for_js() as $theme ) {
5868                  $theme['type']      = 'installed';
5869                  $theme['active']    = ( isset( $_POST['customized_theme'] ) && $_POST['customized_theme'] === $theme['id'] );
5870                  $themes['themes'][] = $theme;
5871              }
5872          } elseif ( 'wporg' === $theme_action ) {
5873  
5874              // Load WordPress.org themes from the .org API and normalize data to match installed theme objects.
5875              if ( ! current_user_can( 'install_themes' ) ) {
5876                  wp_die( -1 );
5877              }
5878  
5879              // Arguments for all queries.
5880              $wporg_args = array(
5881                  'per_page' => 100,
5882                  'fields'   => array(
5883                      'reviews_url' => true, // Explicitly request the reviews URL to be linked from the customizer.
5884                  ),
5885              );
5886  
5887              $args = array_merge( $wporg_args, $args );
5888  
5889              if ( '' === $args['search'] && '' === $args['tag'] ) {
5890                  $args['browse'] = 'new'; // Sort by latest themes by default.
5891              }
5892  
5893              // Load themes from the .org API.
5894              $themes = themes_api( 'query_themes', $args );
5895              if ( is_wp_error( $themes ) ) {
5896                  wp_send_json_error();
5897              }
5898  
5899              // This list matches the allowed tags in wp-admin/includes/theme-install.php.
5900              $themes_allowedtags                     = array_fill_keys(
5901                  array( 'a', 'abbr', 'acronym', 'code', 'pre', 'em', 'strong', 'div', 'p', 'ul', 'ol', 'li', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'img' ),
5902                  array()
5903              );
5904              $themes_allowedtags['a']                = array_fill_keys( array( 'href', 'title', 'target' ), true );
5905              $themes_allowedtags['acronym']['title'] = true;
5906              $themes_allowedtags['abbr']['title']    = true;
5907              $themes_allowedtags['img']              = array_fill_keys( array( 'src', 'class', 'alt' ), true );
5908  
5909              // Prepare a list of installed themes to check against before the loop.
5910              $installed_themes = array();
5911              $wp_themes        = wp_get_themes();
5912              foreach ( $wp_themes as $theme ) {
5913                  $installed_themes[] = $theme->get_stylesheet();
5914              }
5915              $update_php = network_admin_url( 'update.php?action=install-theme' );
5916  
5917              // Set up properties for themes available on WordPress.org.
5918              foreach ( $themes->themes as &$theme ) {
5919                  $theme->install_url = add_query_arg(
5920                      array(
5921                          'theme'    => $theme->slug,
5922                          '_wpnonce' => wp_create_nonce( 'install-theme_' . $theme->slug ),
5923                      ),
5924                      $update_php
5925                  );
5926  
5927                  $theme->name        = wp_kses( $theme->name, $themes_allowedtags );
5928                  $theme->version     = wp_kses( $theme->version, $themes_allowedtags );
5929                  $theme->description = wp_kses( $theme->description, $themes_allowedtags );
5930                  $theme->stars       = wp_star_rating(
5931                      array(
5932                          'rating' => $theme->rating,
5933                          'type'   => 'percent',
5934                          'number' => $theme->num_ratings,
5935                          'echo'   => false,
5936                      )
5937                  );
5938                  $theme->num_ratings = number_format_i18n( $theme->num_ratings );
5939                  $theme->preview_url = set_url_scheme( $theme->preview_url );
5940  
5941                  // Handle themes that are already installed as installed themes.
5942                  if ( in_array( $theme->slug, $installed_themes, true ) ) {
5943                      $theme->type = 'installed';
5944                  } else {
5945                      $theme->type = $theme_action;
5946                  }
5947  
5948                  // Set active based on customized theme.
5949                  $theme->active = ( isset( $_POST['customized_theme'] ) && $_POST['customized_theme'] === $theme->slug );
5950  
5951                  // Map available theme properties to installed theme properties.
5952                  $theme->id            = $theme->slug;
5953                  $theme->screenshot    = array( $theme->screenshot_url );
5954                  $theme->authorAndUri  = wp_kses( $theme->author['display_name'], $themes_allowedtags );
5955                  $theme->compatibleWP  = is_wp_version_compatible( $theme->requires ); // phpcs:ignore WordPress.NamingConventions.ValidVariableName
5956                  $theme->compatiblePHP = is_php_version_compatible( $theme->requires_php ); // phpcs:ignore WordPress.NamingConventions.ValidVariableName
5957  
5958                  if ( isset( $theme->parent ) ) {
5959                      $theme->parent = $theme->parent['slug'];
5960                  } else {
5961                      $theme->parent = false;
5962                  }
5963                  unset( $theme->slug );
5964                  unset( $theme->screenshot_url );
5965                  unset( $theme->author );
5966              } // End foreach().
5967          } // End if().
5968  
5969          /**
5970           * Filters the theme data loaded in the customizer.
5971           *
5972           * This allows theme data to be loading from an external source,
5973           * or modification of data loaded from `wp_prepare_themes_for_js()`
5974           * or WordPress.org via `themes_api()`.
5975           *
5976           * @since 4.9.0
5977           *
5978           * @see wp_prepare_themes_for_js()
5979           * @see themes_api()
5980           * @see WP_Customize_Manager::__construct()
5981           *
5982           * @param array|stdClass       $themes  Nested array or object of theme data.
5983           * @param array                $args    List of arguments, such as page, search term, and tags to query for.
5984           * @param WP_Customize_Manager $manager Instance of Customize manager.
5985           */
5986          $themes = apply_filters( 'customize_load_themes', $themes, $args, $this );
5987  
5988          wp_send_json_success( $themes );
5989      }
5990  
5991  
5992      /**
5993       * Callback for validating the header_textcolor value.
5994       *
5995       * Accepts 'blank', and otherwise uses sanitize_hex_color_no_hash().
5996       * Returns default text color if hex color is empty.
5997       *
5998       * @since 3.4.0
5999       *
6000       * @param string $color
6001       * @return mixed
6002       */
6003  	public function _sanitize_header_textcolor( $color ) {
6004          if ( 'blank' === $color ) {
6005              return 'blank';
6006          }
6007  
6008          $color = sanitize_hex_color_no_hash( $color );
6009          if ( empty( $color ) ) {
6010              $color = get_theme_support( 'custom-header', 'default-text-color' );
6011          }
6012  
6013          return $color;
6014      }
6015  
6016      /**
6017       * Callback for validating a background setting value.
6018       *
6019       * @since 4.7.0
6020       *
6021       * @param string               $value   Repeat value.
6022       * @param WP_Customize_Setting $setting Setting.
6023       * @return string|WP_Error Background value or validation error.
6024       */
6025  	public function _sanitize_background_setting( $value, $setting ) {
6026          if ( 'background_repeat' === $setting->id ) {
6027              if ( ! in_array( $value, array( 'repeat-x', 'repeat-y', 'repeat', 'no-repeat' ), true ) ) {
6028                  return new WP_Error( 'invalid_value', __( 'Invalid value for background repeat.' ) );
6029              }
6030          } elseif ( 'background_attachment' === $setting->id ) {
6031              if ( ! in_array( $value, array( 'fixed', 'scroll' ), true ) ) {
6032                  return new WP_Error( 'invalid_value', __( 'Invalid value for background attachment.' ) );
6033              }
6034          } elseif ( 'background_position_x' === $setting->id ) {
6035              if ( ! in_array( $value, array( 'left', 'center', 'right' ), true ) ) {
6036                  return new WP_Error( 'invalid_value', __( 'Invalid value for background position X.' ) );
6037              }
6038          } elseif ( 'background_position_y' === $setting->id ) {
6039              if ( ! in_array( $value, array( 'top', 'center', 'bottom' ), true ) ) {
6040                  return new WP_Error( 'invalid_value', __( 'Invalid value for background position Y.' ) );
6041              }
6042          } elseif ( 'background_size' === $setting->id ) {
6043              if ( ! in_array( $value, array( 'auto', 'contain', 'cover' ), true ) ) {
6044                  return new WP_Error( 'invalid_value', __( 'Invalid value for background size.' ) );
6045              }
6046          } elseif ( 'background_preset' === $setting->id ) {
6047              if ( ! in_array( $value, array( 'default', 'fill', 'fit', 'repeat', 'custom' ), true ) ) {
6048                  return new WP_Error( 'invalid_value', __( 'Invalid value for background size.' ) );
6049              }
6050          } elseif ( 'background_image' === $setting->id || 'background_image_thumb' === $setting->id ) {
6051              $value = empty( $value ) ? '' : sanitize_url( $value );
6052          } else {
6053              return new WP_Error( 'unrecognized_setting', __( 'Unrecognized background setting.' ) );
6054          }
6055          return $value;
6056      }
6057  
6058      /**
6059       * Exports header video settings to facilitate selective refresh.
6060       *
6061       * @since 4.7.0
6062       *
6063       * @param array                          $response          Response.
6064       * @param WP_Customize_Selective_Refresh $selective_refresh Selective refresh component.
6065       * @param array                          $partials          Array of partials.
6066       * @return array
6067       */
6068  	public function export_header_video_settings( $response, $selective_refresh, $partials ) {
6069          if ( isset( $partials['custom_header'] ) ) {
6070              $response['custom_header_settings'] = get_header_video_settings();
6071          }
6072  
6073          return $response;
6074      }
6075  
6076      /**
6077       * Callback for validating the header_video value.
6078       *
6079       * Ensures that the selected video is less than 8MB and provides an error message.
6080       *
6081       * @since 4.7.0
6082       *
6083       * @param WP_Error $validity
6084       * @param mixed    $value
6085       * @return mixed
6086       */
6087  	public function _validate_header_video( $validity, $value ) {
6088          $video = get_attached_file( absint( $value ) );
6089          if ( $video ) {
6090              $size = filesize( $video );
6091              if ( $size > 8 * MB_IN_BYTES ) {
6092                  $validity->add(
6093                      'size_too_large',
6094                      __( 'This video file is too large to use as a header video. Try a shorter video or optimize the compression settings and re-upload a file that is less than 8MB. Or, upload your video to YouTube and link it with the option below.' )
6095                  );
6096              }
6097              if ( ! str_ends_with( $video, '.mp4' ) && ! str_ends_with( $video, '.mov' ) ) { // Check for .mp4 or .mov format, which (assuming h.264 encoding) are the only cross-browser-supported formats.
6098                  $validity->add(
6099                      'invalid_file_type',
6100                      sprintf(
6101                          /* translators: 1: .mp4, 2: .mov */
6102                          __( 'Only %1$s or %2$s files may be used for header video. Please convert your video file and try again, or, upload your video to YouTube and link it with the option below.' ),
6103                          '<code>.mp4</code>',
6104                          '<code>.mov</code>'
6105                      )
6106                  );
6107              }
6108          }
6109          return $validity;
6110      }
6111  
6112      /**
6113       * Callback for validating the external_header_video value.
6114       *
6115       * Ensures that the provided URL is supported.
6116       *
6117       * @since 4.7.0
6118       *
6119       * @param WP_Error $validity
6120       * @param mixed    $value
6121       * @return mixed
6122       */
6123  	public function _validate_external_header_video( $validity, $value ) {
6124          $video = sanitize_url( $value );
6125          if ( $video ) {
6126              if ( ! preg_match( '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#', $video ) ) {
6127                  $validity->add( 'invalid_url', __( 'Please enter a valid YouTube URL.' ) );
6128              }
6129          }
6130          return $validity;
6131      }
6132  
6133      /**
6134       * Callback for sanitizing the external_header_video value.
6135       *
6136       * @since 4.7.1
6137       *
6138       * @param string $value URL.
6139       * @return string Sanitized URL.
6140       */
6141  	public function _sanitize_external_header_video( $value ) {
6142          return sanitize_url( trim( $value ) );
6143      }
6144  
6145      /**
6146       * Callback for rendering the custom logo, used in the custom_logo partial.
6147       *
6148       * This method exists because the partial object and context data are passed
6149       * into a partial's render_callback so we cannot use get_custom_logo() as
6150       * the render_callback directly since it expects a blog ID as the first
6151       * argument.
6152       *
6153       * @see WP_Customize_Manager::register_controls()
6154       *
6155       * @since 4.5.0
6156       *
6157       * @return string Custom logo.
6158       */
6159  	public function _render_custom_logo_partial() {
6160          return get_custom_logo();
6161      }
6162  }


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