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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       * @return never
 451       */
 452  	protected function wp_die( $ajax_message, $message = null ) {
 453          if ( $this->doing_ajax() ) {
 454              wp_die( $ajax_message );
 455          }
 456  
 457          if ( ! $message ) {
 458              $message = __( 'An error occurred while customizing. Please refresh the page and try again.' );
 459          }
 460  
 461          if ( $this->messenger_channel ) {
 462              ob_start();
 463              wp_enqueue_scripts();
 464              wp_print_scripts( array( 'customize-base' ) );
 465  
 466              $settings = array(
 467                  'messengerArgs' => array(
 468                      'channel' => $this->messenger_channel,
 469                      'url'     => wp_customize_url(),
 470                  ),
 471                  'error'         => $ajax_message,
 472              );
 473              $message .= ob_get_clean();
 474              ob_start();
 475              ?>
 476              <script>
 477              ( function( api, settings ) {
 478                  var preview = new api.Messenger( settings.messengerArgs );
 479                  preview.send( 'iframe-loading-error', settings.error );
 480              } )( wp.customize, <?php echo wp_json_encode( $settings, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ); ?> );
 481              </script>
 482              <?php
 483              $message .= wp_get_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
 484          }
 485  
 486          wp_die( $message );
 487      }
 488  
 489      /**
 490       * Returns the Ajax wp_die() handler if it's a customized request.
 491       *
 492       * @since 3.4.0
 493       * @deprecated 4.7.0
 494       *
 495       * @return callable Die handler.
 496       */
 497  	public function wp_die_handler() {
 498          _deprecated_function( __METHOD__, '4.7.0' );
 499  
 500          if ( $this->doing_ajax() || isset( $_POST['customized'] ) ) {
 501              return '_ajax_wp_die_handler';
 502          }
 503  
 504          return '_default_wp_die_handler';
 505      }
 506  
 507      /**
 508       * Starts preview and customize theme.
 509       *
 510       * Check if customize query variable exist. Init filters to filter the active theme.
 511       *
 512       * @since 3.4.0
 513       *
 514       * @global string $pagenow The filename of the current screen.
 515       */
 516  	public function setup_theme() {
 517          global $pagenow;
 518  
 519          // Check permissions for customize.php access since this method is called before customize.php can run any code.
 520          if ( 'customize.php' === $pagenow && ! current_user_can( 'customize' ) ) {
 521              if ( ! is_user_logged_in() ) {
 522                  auth_redirect();
 523              } else {
 524                  wp_die(
 525                      '<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
 526                      '<p>' . __( 'Sorry, you are not allowed to customize this site.' ) . '</p>',
 527                      403
 528                  );
 529              }
 530              return;
 531          }
 532  
 533          // If a changeset was provided is invalid.
 534          if ( isset( $this->_changeset_uuid ) && false !== $this->_changeset_uuid && ! wp_is_uuid( $this->_changeset_uuid ) ) {
 535              $this->wp_die( -1, __( 'Invalid changeset UUID' ) );
 536          }
 537  
 538          /*
 539           * Clear incoming post data if the user lacks a CSRF token (nonce). Note that the customizer
 540           * application will inject the customize_preview_nonce query parameter into all Ajax requests.
 541           * For similar behavior elsewhere in WordPress, see rest_cookie_check_errors() which logs out
 542           * a user when a valid nonce isn't present.
 543           */
 544          $has_post_data_nonce = (
 545              check_ajax_referer( 'preview-customize_' . $this->get_stylesheet(), 'nonce', false )
 546              ||
 547              check_ajax_referer( 'save-customize_' . $this->get_stylesheet(), 'nonce', false )
 548              ||
 549              check_ajax_referer( 'preview-customize_' . $this->get_stylesheet(), 'customize_preview_nonce', false )
 550          );
 551          if ( ! current_user_can( 'customize' ) || ! $has_post_data_nonce ) {
 552              unset( $_POST['customized'] );
 553              unset( $_REQUEST['customized'] );
 554          }
 555  
 556          /*
 557           * If unauthenticated then require a valid changeset UUID to load the preview.
 558           * In this way, the UUID serves as a secret key. If the messenger channel is present,
 559           * then send unauthenticated code to prompt re-auth.
 560           */
 561          if ( ! current_user_can( 'customize' ) && ! $this->changeset_post_id() ) {
 562              $this->wp_die( $this->messenger_channel ? 0 : -1, __( 'Non-existent changeset UUID.' ) );
 563          }
 564  
 565          if ( ! headers_sent() ) {
 566              send_origin_headers();
 567          }
 568  
 569          // Hide the admin bar if we're embedded in the customizer iframe.
 570          if ( $this->messenger_channel ) {
 571              show_admin_bar( false );
 572          }
 573  
 574          if ( $this->is_theme_active() ) {
 575              // Once the theme is loaded, we'll validate it.
 576              add_action( 'after_setup_theme', array( $this, 'after_setup_theme' ) );
 577          } else {
 578              /*
 579               * If the requested theme is not the active theme and the user doesn't have
 580               * the switch_themes cap, bail.
 581               */
 582              if ( ! current_user_can( 'switch_themes' ) ) {
 583                  $this->wp_die( -1, __( 'Sorry, you are not allowed to edit theme options on this site.' ) );
 584              }
 585  
 586              // If the theme has errors while loading, bail.
 587              if ( $this->theme()->errors() ) {
 588                  $this->wp_die( -1, $this->theme()->errors()->get_error_message() );
 589              }
 590  
 591              // If the theme isn't allowed per multisite settings, bail.
 592              if ( ! $this->theme()->is_allowed() ) {
 593                  $this->wp_die( -1, __( 'The requested theme does not exist.' ) );
 594              }
 595          }
 596  
 597          // Make sure changeset UUID is established immediately after the theme is loaded.
 598          add_action( 'after_setup_theme', array( $this, 'establish_loaded_changeset' ), 5 );
 599  
 600          /*
 601           * Import theme starter content for fresh installations when landing in the customizer.
 602           * Import starter content at after_setup_theme:100 so that any
 603           * add_theme_support( 'starter-content' ) calls will have been made.
 604           */
 605          if ( get_option( 'fresh_site' ) && 'customize.php' === $pagenow ) {
 606              add_action( 'after_setup_theme', array( $this, 'import_theme_starter_content' ), 100 );
 607          }
 608  
 609          $this->start_previewing_theme();
 610      }
 611  
 612      /**
 613       * Establishes the loaded changeset.
 614       *
 615       * This method runs right at after_setup_theme and applies the 'customize_changeset_branching' filter to determine
 616       * whether concurrent changesets are allowed. Then if the Customizer is not initialized with a `changeset_uuid` param,
 617       * this method will determine which UUID should be used. If changeset branching is disabled, then the most saved
 618       * changeset will be loaded by default. Otherwise, if there are no existing saved changesets or if changeset branching is
 619       * enabled, then a new UUID will be generated.
 620       *
 621       * @since 4.9.0
 622       *
 623       * @global string $pagenow The filename of the current screen.
 624       */
 625  	public function establish_loaded_changeset() {
 626          global $pagenow;
 627  
 628          if ( empty( $this->_changeset_uuid ) ) {
 629              $changeset_uuid = null;
 630  
 631              if ( ! $this->branching() && $this->is_theme_active() ) {
 632                  $unpublished_changeset_posts = $this->get_changeset_posts(
 633                      array(
 634                          'post_status'               => array_diff( get_post_stati(), array( 'auto-draft', 'publish', 'trash', 'inherit', 'private' ) ),
 635                          'exclude_restore_dismissed' => false,
 636                          'author'                    => 'any',
 637                          'posts_per_page'            => 1,
 638                          'order'                     => 'DESC',
 639                          'orderby'                   => 'date',
 640                      )
 641                  );
 642                  $unpublished_changeset_post  = array_shift( $unpublished_changeset_posts );
 643                  if ( ! empty( $unpublished_changeset_post ) && wp_is_uuid( $unpublished_changeset_post->post_name ) ) {
 644                      $changeset_uuid = $unpublished_changeset_post->post_name;
 645                  }
 646              }
 647  
 648              // If no changeset UUID has been set yet, then generate a new one.
 649              if ( empty( $changeset_uuid ) ) {
 650                  $changeset_uuid = wp_generate_uuid4();
 651              }
 652  
 653              $this->_changeset_uuid = $changeset_uuid;
 654          }
 655  
 656          if ( is_admin() && 'customize.php' === $pagenow ) {
 657              $this->set_changeset_lock( $this->changeset_post_id() );
 658          }
 659      }
 660  
 661      /**
 662       * Callback to validate a theme once it is loaded
 663       *
 664       * @since 3.4.0
 665       */
 666  	public function after_setup_theme() {
 667          $doing_ajax_or_is_customized = ( $this->doing_ajax() || isset( $_POST['customized'] ) );
 668          if ( ! $doing_ajax_or_is_customized && ! validate_current_theme() ) {
 669              wp_redirect( 'themes.php?broken=true' );
 670              exit;
 671          }
 672      }
 673  
 674      /**
 675       * If the theme to be previewed isn't the active theme, add filter callbacks
 676       * to swap it out at runtime.
 677       *
 678       * @since 3.4.0
 679       */
 680  	public function start_previewing_theme() {
 681          // Bail if we're already previewing.
 682          if ( $this->is_preview() ) {
 683              return;
 684          }
 685  
 686          $this->previewing = true;
 687  
 688          if ( ! $this->is_theme_active() ) {
 689              add_filter( 'template', array( $this, 'get_template' ) );
 690              add_filter( 'stylesheet', array( $this, 'get_stylesheet' ) );
 691              add_filter( 'pre_option_current_theme', array( $this, 'current_theme' ) );
 692  
 693              // @link: https://core.trac.wordpress.org/ticket/20027
 694              add_filter( 'pre_option_stylesheet', array( $this, 'get_stylesheet' ) );
 695              add_filter( 'pre_option_template', array( $this, 'get_template' ) );
 696  
 697              // Handle custom theme roots.
 698              add_filter( 'pre_option_stylesheet_root', array( $this, 'get_stylesheet_root' ) );
 699              add_filter( 'pre_option_template_root', array( $this, 'get_template_root' ) );
 700          }
 701  
 702          /**
 703           * Fires once the Customizer theme preview has started.
 704           *
 705           * @since 3.4.0
 706           *
 707           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
 708           */
 709          do_action( 'start_previewing_theme', $this );
 710      }
 711  
 712      /**
 713       * Stops previewing the selected theme.
 714       *
 715       * Removes filters to change the active theme.
 716       *
 717       * @since 3.4.0
 718       */
 719  	public function stop_previewing_theme() {
 720          if ( ! $this->is_preview() ) {
 721              return;
 722          }
 723  
 724          $this->previewing = false;
 725  
 726          if ( ! $this->is_theme_active() ) {
 727              remove_filter( 'template', array( $this, 'get_template' ) );
 728              remove_filter( 'stylesheet', array( $this, 'get_stylesheet' ) );
 729              remove_filter( 'pre_option_current_theme', array( $this, 'current_theme' ) );
 730  
 731              // @link: https://core.trac.wordpress.org/ticket/20027
 732              remove_filter( 'pre_option_stylesheet', array( $this, 'get_stylesheet' ) );
 733              remove_filter( 'pre_option_template', array( $this, 'get_template' ) );
 734  
 735              // Handle custom theme roots.
 736              remove_filter( 'pre_option_stylesheet_root', array( $this, 'get_stylesheet_root' ) );
 737              remove_filter( 'pre_option_template_root', array( $this, 'get_template_root' ) );
 738          }
 739  
 740          /**
 741           * Fires once the Customizer theme preview has stopped.
 742           *
 743           * @since 3.4.0
 744           *
 745           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
 746           */
 747          do_action( 'stop_previewing_theme', $this );
 748      }
 749  
 750      /**
 751       * Gets whether settings are or will be previewed.
 752       *
 753       * @since 4.9.0
 754       *
 755       * @see WP_Customize_Setting::preview()
 756       *
 757       * @return bool
 758       */
 759  	public function settings_previewed() {
 760          return $this->settings_previewed;
 761      }
 762  
 763      /**
 764       * Gets whether data from a changeset's autosaved revision should be loaded if it exists.
 765       *
 766       * @since 4.9.0
 767       *
 768       * @see WP_Customize_Manager::changeset_data()
 769       *
 770       * @return bool Is using autosaved changeset revision.
 771       */
 772  	public function autosaved() {
 773          return $this->autosaved;
 774      }
 775  
 776      /**
 777       * Whether the changeset branching is allowed.
 778       *
 779       * @since 4.9.0
 780       *
 781       * @see WP_Customize_Manager::establish_loaded_changeset()
 782       *
 783       * @return bool Is changeset branching.
 784       */
 785  	public function branching() {
 786  
 787          /**
 788           * Filters whether or not changeset branching is allowed.
 789           *
 790           * By default in core, when changeset branching is not allowed, changesets will operate
 791           * linearly in that only one saved changeset will exist at a time (with a 'draft' or
 792           * 'future' status). This makes the Customizer operate in a way that is similar to going to
 793           * "edit" to one existing post: all users will be making changes to the same post, and autosave
 794           * revisions will be made for that post.
 795           *
 796           * By contrast, when changeset branching is allowed, then the model is like users going
 797           * to "add new" for a page and each user makes changes independently of each other since
 798           * they are all operating on their own separate pages, each getting their own separate
 799           * initial auto-drafts and then once initially saved, autosave revisions on top of that
 800           * user's specific post.
 801           *
 802           * Since linear changesets are deemed to be more suitable for the majority of WordPress users,
 803           * they are the default. For WordPress sites that have heavy site management in the Customizer
 804           * by multiple users then branching changesets should be enabled by means of this filter.
 805           *
 806           * @since 4.9.0
 807           *
 808           * @param bool                 $allow_branching Whether branching is allowed. If `false`, the default,
 809           *                                              then only one saved changeset exists at a time.
 810           * @param WP_Customize_Manager $wp_customize    Manager instance.
 811           */
 812          $this->branching = apply_filters( 'customize_changeset_branching', $this->branching, $this );
 813  
 814          return $this->branching;
 815      }
 816  
 817      /**
 818       * Gets the changeset UUID.
 819       *
 820       * @since 4.7.0
 821       *
 822       * @see WP_Customize_Manager::establish_loaded_changeset()
 823       *
 824       * @return string UUID.
 825       */
 826  	public function changeset_uuid() {
 827          if ( empty( $this->_changeset_uuid ) ) {
 828              $this->establish_loaded_changeset();
 829          }
 830          return $this->_changeset_uuid;
 831      }
 832  
 833      /**
 834       * Gets the theme being customized.
 835       *
 836       * @since 3.4.0
 837       *
 838       * @return WP_Theme
 839       */
 840  	public function theme() {
 841          if ( ! $this->theme ) {
 842              $this->theme = wp_get_theme();
 843          }
 844          return $this->theme;
 845      }
 846  
 847      /**
 848       * Gets the registered settings.
 849       *
 850       * @since 3.4.0
 851       *
 852       * @return array
 853       */
 854  	public function settings() {
 855          return $this->settings;
 856      }
 857  
 858      /**
 859       * Gets the registered controls.
 860       *
 861       * @since 3.4.0
 862       *
 863       * @return array
 864       */
 865  	public function controls() {
 866          return $this->controls;
 867      }
 868  
 869      /**
 870       * Gets the registered containers.
 871       *
 872       * @since 4.0.0
 873       *
 874       * @return array
 875       */
 876  	public function containers() {
 877          return $this->containers;
 878      }
 879  
 880      /**
 881       * Gets the registered sections.
 882       *
 883       * @since 3.4.0
 884       *
 885       * @return array
 886       */
 887  	public function sections() {
 888          return $this->sections;
 889      }
 890  
 891      /**
 892       * Gets the registered panels.
 893       *
 894       * @since 4.0.0
 895       *
 896       * @return array Panels.
 897       */
 898  	public function panels() {
 899          return $this->panels;
 900      }
 901  
 902      /**
 903       * Checks if the current theme is active.
 904       *
 905       * @since 3.4.0
 906       *
 907       * @return bool
 908       */
 909  	public function is_theme_active() {
 910          return $this->get_stylesheet() === $this->original_stylesheet;
 911      }
 912  
 913      /**
 914       * Registers styles/scripts and initialize the preview of each setting
 915       *
 916       * @since 3.4.0
 917       */
 918  	public function wp_loaded() {
 919  
 920          /*
 921           * Unconditionally register core types for panels, sections, and controls
 922           * in case plugin unhooks all customize_register actions.
 923           */
 924          $this->register_panel_type( 'WP_Customize_Panel' );
 925          $this->register_panel_type( 'WP_Customize_Themes_Panel' );
 926          $this->register_section_type( 'WP_Customize_Section' );
 927          $this->register_section_type( 'WP_Customize_Sidebar_Section' );
 928          $this->register_section_type( 'WP_Customize_Themes_Section' );
 929          $this->register_control_type( 'WP_Customize_Color_Control' );
 930          $this->register_control_type( 'WP_Customize_Media_Control' );
 931          $this->register_control_type( 'WP_Customize_Upload_Control' );
 932          $this->register_control_type( 'WP_Customize_Image_Control' );
 933          $this->register_control_type( 'WP_Customize_Background_Image_Control' );
 934          $this->register_control_type( 'WP_Customize_Background_Position_Control' );
 935          $this->register_control_type( 'WP_Customize_Cropped_Image_Control' );
 936          $this->register_control_type( 'WP_Customize_Site_Icon_Control' );
 937          $this->register_control_type( 'WP_Customize_Theme_Control' );
 938          $this->register_control_type( 'WP_Customize_Code_Editor_Control' );
 939          $this->register_control_type( 'WP_Customize_Date_Time_Control' );
 940  
 941          /**
 942           * Fires once WordPress has loaded, allowing scripts and styles to be initialized.
 943           *
 944           * @since 3.4.0
 945           *
 946           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
 947           */
 948          do_action( 'customize_register', $this );
 949  
 950          if ( $this->settings_previewed() ) {
 951              foreach ( $this->settings as $setting ) {
 952                  $setting->preview();
 953              }
 954          }
 955  
 956          if ( $this->is_preview() && ! is_admin() ) {
 957              $this->customize_preview_init();
 958          }
 959      }
 960  
 961      /**
 962       * Prevents Ajax requests from following redirects when previewing a theme
 963       * by issuing a 200 response instead of a 30x.
 964       *
 965       * Instead, the JS will sniff out the location header.
 966       *
 967       * @since 3.4.0
 968       * @deprecated 4.7.0
 969       *
 970       * @param int $status Status.
 971       * @return int
 972       */
 973  	public function wp_redirect_status( $status ) {
 974          _deprecated_function( __FUNCTION__, '4.7.0' );
 975  
 976          if ( $this->is_preview() && ! is_admin() ) {
 977              return 200;
 978          }
 979  
 980          return $status;
 981      }
 982  
 983      /**
 984       * Finds the changeset post ID for a given changeset UUID.
 985       *
 986       * @since 4.7.0
 987       *
 988       * @param string $uuid Changeset UUID.
 989       * @return int|null Returns post ID on success and null on failure.
 990       */
 991  	public function find_changeset_post_id( $uuid ) {
 992          $cache_group       = 'customize_changeset_post';
 993          $changeset_post_id = wp_cache_get( $uuid, $cache_group );
 994          if ( $changeset_post_id && 'customize_changeset' === get_post_type( $changeset_post_id ) ) {
 995              return $changeset_post_id;
 996          }
 997  
 998          $changeset_post_query = new WP_Query(
 999              array(
1000                  'post_type'              => 'customize_changeset',
1001                  'post_status'            => get_post_stati(),
1002                  'name'                   => $uuid,
1003                  'posts_per_page'         => 1,
1004                  'no_found_rows'          => true,
1005                  'cache_results'          => true,
1006                  'update_post_meta_cache' => false,
1007                  'update_post_term_cache' => false,
1008                  'lazy_load_term_meta'    => false,
1009              )
1010          );
1011          if ( ! empty( $changeset_post_query->posts ) ) {
1012              // Note: 'fields'=>'ids' is not being used in order to cache the post object as it will be needed.
1013              $changeset_post_id = $changeset_post_query->posts[0]->ID;
1014              wp_cache_set( $uuid, $changeset_post_id, $cache_group );
1015              return $changeset_post_id;
1016          }
1017  
1018          return null;
1019      }
1020  
1021      /**
1022       * Gets changeset posts.
1023       *
1024       * @since 4.9.0
1025       *
1026       * @param array $args {
1027       *     Args to pass into `get_posts()` to query changesets.
1028       *
1029       *     @type int    $posts_per_page             Number of posts to return. Defaults to -1 (all posts).
1030       *     @type int    $author                     Post author. Defaults to current user.
1031       *     @type string $post_status                Status of changeset. Defaults to 'auto-draft'.
1032       *     @type bool   $exclude_restore_dismissed  Whether to exclude changeset auto-drafts that have been dismissed. Defaults to true.
1033       * }
1034       * @return WP_Post[] Auto-draft changesets.
1035       */
1036  	protected function get_changeset_posts( $args = array() ) {
1037          $default_args = array(
1038              'exclude_restore_dismissed' => true,
1039              'posts_per_page'            => -1,
1040              'post_type'                 => 'customize_changeset',
1041              'post_status'               => 'auto-draft',
1042              'order'                     => 'DESC',
1043              'orderby'                   => 'date',
1044              'no_found_rows'             => true,
1045              'cache_results'             => true,
1046              'update_post_meta_cache'    => false,
1047              'update_post_term_cache'    => false,
1048              'lazy_load_term_meta'       => false,
1049          );
1050          if ( get_current_user_id() ) {
1051              $default_args['author'] = get_current_user_id();
1052          }
1053          $args = array_merge( $default_args, $args );
1054  
1055          if ( ! empty( $args['exclude_restore_dismissed'] ) ) {
1056              unset( $args['exclude_restore_dismissed'] );
1057              $args['meta_query'] = array(
1058                  array(
1059                      'key'     => '_customize_restore_dismissed',
1060                      'compare' => 'NOT EXISTS',
1061                  ),
1062              );
1063          }
1064  
1065          return get_posts( $args );
1066      }
1067  
1068      /**
1069       * Dismisses all of the current user's auto-drafts (other than the present one).
1070       *
1071       * @since 4.9.0
1072       * @return int The number of auto-drafts that were dismissed.
1073       */
1074  	protected function dismiss_user_auto_draft_changesets() {
1075          $changeset_autodraft_posts = $this->get_changeset_posts(
1076              array(
1077                  'post_status'               => 'auto-draft',
1078                  'exclude_restore_dismissed' => true,
1079                  'posts_per_page'            => -1,
1080              )
1081          );
1082          $dismissed                 = 0;
1083          foreach ( $changeset_autodraft_posts as $autosave_autodraft_post ) {
1084              if ( $autosave_autodraft_post->ID === $this->changeset_post_id() ) {
1085                  continue;
1086              }
1087              if ( update_post_meta( $autosave_autodraft_post->ID, '_customize_restore_dismissed', true ) ) {
1088                  ++$dismissed;
1089              }
1090          }
1091          return $dismissed;
1092      }
1093  
1094      /**
1095       * Gets the changeset post ID for the loaded changeset.
1096       *
1097       * @since 4.7.0
1098       *
1099       * @return int|null Post ID on success or null if there is no post yet saved.
1100       */
1101  	public function changeset_post_id() {
1102          if ( ! isset( $this->_changeset_post_id ) ) {
1103              $post_id = $this->find_changeset_post_id( $this->changeset_uuid() );
1104              if ( ! $post_id ) {
1105                  $post_id = false;
1106              }
1107              $this->_changeset_post_id = $post_id;
1108          }
1109          if ( false === $this->_changeset_post_id ) {
1110              return null;
1111          }
1112          return $this->_changeset_post_id;
1113      }
1114  
1115      /**
1116       * Gets the data stored in a changeset post.
1117       *
1118       * @since 4.7.0
1119       *
1120       * @param int $post_id Changeset post ID.
1121       * @return array|WP_Error Changeset data or WP_Error on error.
1122       */
1123  	protected function get_changeset_post_data( $post_id ) {
1124          if ( ! $post_id ) {
1125              return new WP_Error( 'empty_post_id' );
1126          }
1127          $changeset_post = get_post( $post_id );
1128          if ( ! $changeset_post ) {
1129              return new WP_Error( 'missing_post' );
1130          }
1131          if ( 'revision' === $changeset_post->post_type ) {
1132              if ( 'customize_changeset' !== get_post_type( $changeset_post->post_parent ) ) {
1133                  return new WP_Error( 'wrong_post_type' );
1134              }
1135          } elseif ( 'customize_changeset' !== $changeset_post->post_type ) {
1136              return new WP_Error( 'wrong_post_type' );
1137          }
1138          $changeset_data = json_decode( $changeset_post->post_content, true );
1139          $last_error     = json_last_error();
1140          if ( $last_error ) {
1141              return new WP_Error( 'json_parse_error', '', $last_error );
1142          }
1143          if ( ! is_array( $changeset_data ) ) {
1144              return new WP_Error( 'expected_array' );
1145          }
1146          return $changeset_data;
1147      }
1148  
1149      /**
1150       * Gets changeset data.
1151       *
1152       * @since 4.7.0
1153       * @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.
1154       *
1155       * @return array Changeset data.
1156       */
1157  	public function changeset_data() {
1158          if ( isset( $this->_changeset_data ) ) {
1159              return $this->_changeset_data;
1160          }
1161          $changeset_post_id = $this->changeset_post_id();
1162          if ( ! $changeset_post_id ) {
1163              $this->_changeset_data = array();
1164          } else {
1165              if ( $this->autosaved() && is_user_logged_in() ) {
1166                  $autosave_post = wp_get_post_autosave( $changeset_post_id, get_current_user_id() );
1167                  if ( $autosave_post ) {
1168                      $data = $this->get_changeset_post_data( $autosave_post->ID );
1169                      if ( ! is_wp_error( $data ) ) {
1170                          $this->_changeset_data = $data;
1171                      }
1172                  }
1173              }
1174  
1175              // Load data from the changeset if it was not loaded from an autosave.
1176              if ( ! isset( $this->_changeset_data ) ) {
1177                  $data = $this->get_changeset_post_data( $changeset_post_id );
1178                  if ( ! is_wp_error( $data ) ) {
1179                      $this->_changeset_data = $data;
1180                  } else {
1181                      $this->_changeset_data = array();
1182                  }
1183              }
1184          }
1185          return $this->_changeset_data;
1186      }
1187  
1188      /**
1189       * Starter content setting IDs.
1190       *
1191       * @since 4.7.0
1192       * @var array
1193       */
1194      protected $pending_starter_content_settings_ids = array();
1195  
1196      /**
1197       * Imports theme starter content into the customized state.
1198       *
1199       * @since 4.7.0
1200       *
1201       * @param array $starter_content Starter content. Defaults to `get_theme_starter_content()`.
1202       */
1203  	public function import_theme_starter_content( $starter_content = array() ) {
1204          if ( empty( $starter_content ) ) {
1205              $starter_content = get_theme_starter_content();
1206          }
1207  
1208          $changeset_data = array();
1209          if ( $this->changeset_post_id() ) {
1210              /*
1211               * Don't re-import starter content into a changeset saved persistently.
1212               * This will need to be revisited in the future once theme switching
1213               * is allowed with drafted/scheduled changesets, since switching to
1214               * another theme could result in more starter content being applied.
1215               * However, when doing an explicit save it is currently possible for
1216               * nav menus and nav menu items specifically to lose their starter_content
1217               * flags, thus resulting in duplicates being created since they fail
1218               * to get re-used. See #40146.
1219               */
1220              if ( 'auto-draft' !== get_post_status( $this->changeset_post_id() ) ) {
1221                  return;
1222              }
1223  
1224              $changeset_data = $this->get_changeset_post_data( $this->changeset_post_id() );
1225          }
1226  
1227          $sidebars_widgets = isset( $starter_content['widgets'] ) && ! empty( $this->widgets ) ? $starter_content['widgets'] : array();
1228          $attachments      = isset( $starter_content['attachments'] ) && ! empty( $this->nav_menus ) ? $starter_content['attachments'] : array();
1229          $posts            = isset( $starter_content['posts'] ) && ! empty( $this->nav_menus ) ? $starter_content['posts'] : array();
1230          $options          = $starter_content['options'] ?? array();
1231          $nav_menus        = isset( $starter_content['nav_menus'] ) && ! empty( $this->nav_menus ) ? $starter_content['nav_menus'] : array();
1232          $theme_mods       = $starter_content['theme_mods'] ?? array();
1233  
1234          // Widgets.
1235          $max_widget_numbers = array();
1236          foreach ( $sidebars_widgets as $sidebar_id => $widgets ) {
1237              $sidebar_widget_ids = array();
1238              foreach ( $widgets as $widget ) {
1239                  list( $id_base, $instance ) = $widget;
1240  
1241                  if ( ! isset( $max_widget_numbers[ $id_base ] ) ) {
1242  
1243                      // When $settings is an array-like object, get an intrinsic array for use with array_keys().
1244                      $settings = get_option( "widget_{$id_base}", array() );
1245                      if ( $settings instanceof ArrayObject || $settings instanceof ArrayIterator ) {
1246                          $settings = $settings->getArrayCopy();
1247                      }
1248  
1249                      unset( $settings['_multiwidget'] );
1250  
1251                      // Find the max widget number for this type.
1252                      $widget_numbers = array_keys( $settings );
1253                      if ( count( $widget_numbers ) > 0 ) {
1254                          $widget_numbers[]               = 1;
1255                          $max_widget_numbers[ $id_base ] = max( ...$widget_numbers );
1256                      } else {
1257                          $max_widget_numbers[ $id_base ] = 1;
1258                      }
1259                  }
1260                  $max_widget_numbers[ $id_base ] += 1;
1261  
1262                  $widget_id  = sprintf( '%s-%d', $id_base, $max_widget_numbers[ $id_base ] );
1263                  $setting_id = sprintf( 'widget_%s[%d]', $id_base, $max_widget_numbers[ $id_base ] );
1264  
1265                  $setting_value = $this->widgets->sanitize_widget_js_instance( $instance );
1266                  if ( empty( $changeset_data[ $setting_id ] ) || ! empty( $changeset_data[ $setting_id ]['starter_content'] ) ) {
1267                      $this->set_post_value( $setting_id, $setting_value );
1268                      $this->pending_starter_content_settings_ids[] = $setting_id;
1269                  }
1270                  $sidebar_widget_ids[] = $widget_id;
1271              }
1272  
1273              $setting_id = sprintf( 'sidebars_widgets[%s]', $sidebar_id );
1274              if ( empty( $changeset_data[ $setting_id ] ) || ! empty( $changeset_data[ $setting_id ]['starter_content'] ) ) {
1275                  $this->set_post_value( $setting_id, $sidebar_widget_ids );
1276                  $this->pending_starter_content_settings_ids[] = $setting_id;
1277              }
1278          }
1279  
1280          $starter_content_auto_draft_post_ids = array();
1281          if ( ! empty( $changeset_data['nav_menus_created_posts']['value'] ) ) {
1282              $starter_content_auto_draft_post_ids = array_merge( $starter_content_auto_draft_post_ids, $changeset_data['nav_menus_created_posts']['value'] );
1283          }
1284  
1285          // Make an index of all the posts needed and what their slugs are.
1286          $needed_posts = array();
1287          $attachments  = $this->prepare_starter_content_attachments( $attachments );
1288          foreach ( $attachments as $attachment ) {
1289              $key                  = 'attachment:' . $attachment['post_name'];
1290              $needed_posts[ $key ] = true;
1291          }
1292          foreach ( array_keys( $posts ) as $post_symbol ) {
1293              if ( empty( $posts[ $post_symbol ]['post_name'] ) && empty( $posts[ $post_symbol ]['post_title'] ) ) {
1294                  unset( $posts[ $post_symbol ] );
1295                  continue;
1296              }
1297              if ( empty( $posts[ $post_symbol ]['post_name'] ) ) {
1298                  $posts[ $post_symbol ]['post_name'] = sanitize_title( $posts[ $post_symbol ]['post_title'] );
1299              }
1300              if ( empty( $posts[ $post_symbol ]['post_type'] ) ) {
1301                  $posts[ $post_symbol ]['post_type'] = 'post';
1302              }
1303              $needed_posts[ $posts[ $post_symbol ]['post_type'] . ':' . $posts[ $post_symbol ]['post_name'] ] = true;
1304          }
1305          $all_post_slugs = array_merge(
1306              wp_list_pluck( $attachments, 'post_name' ),
1307              wp_list_pluck( $posts, 'post_name' )
1308          );
1309  
1310          /*
1311           * Obtain all post types referenced in starter content to use in query.
1312           * This is needed because 'any' will not account for post types not yet registered.
1313           */
1314          $post_types = array_filter( array_merge( array( 'attachment' ), wp_list_pluck( $posts, 'post_type' ) ) );
1315  
1316          // Re-use auto-draft starter content posts referenced in the current customized state.
1317          $existing_starter_content_posts = array();
1318          if ( ! empty( $starter_content_auto_draft_post_ids ) ) {
1319              $existing_posts_query = new WP_Query(
1320                  array(
1321                      'post__in'       => $starter_content_auto_draft_post_ids,
1322                      'post_status'    => 'auto-draft',
1323                      'post_type'      => $post_types,
1324                      'posts_per_page' => -1,
1325                  )
1326              );
1327              foreach ( $existing_posts_query->posts as $existing_post ) {
1328                  $post_name = $existing_post->post_name;
1329                  if ( empty( $post_name ) ) {
1330                      $post_name = get_post_meta( $existing_post->ID, '_customize_draft_post_name', true );
1331                  }
1332                  $existing_starter_content_posts[ $existing_post->post_type . ':' . $post_name ] = $existing_post;
1333              }
1334          }
1335  
1336          // Re-use non-auto-draft posts.
1337          if ( ! empty( $all_post_slugs ) ) {
1338              $existing_posts_query = new WP_Query(
1339                  array(
1340                      'post_name__in'  => $all_post_slugs,
1341                      'post_status'    => array_diff( get_post_stati(), array( 'auto-draft' ) ),
1342                      'post_type'      => 'any',
1343                      'posts_per_page' => -1,
1344                  )
1345              );
1346              foreach ( $existing_posts_query->posts as $existing_post ) {
1347                  $key = $existing_post->post_type . ':' . $existing_post->post_name;
1348                  if ( isset( $needed_posts[ $key ] ) && ! isset( $existing_starter_content_posts[ $key ] ) ) {
1349                      $existing_starter_content_posts[ $key ] = $existing_post;
1350                  }
1351              }
1352          }
1353  
1354          // Attachments are technically posts but handled differently.
1355          if ( ! empty( $attachments ) ) {
1356  
1357              $attachment_ids = array();
1358  
1359              foreach ( $attachments as $symbol => $attachment ) {
1360                  $file_array    = array(
1361                      'name' => $attachment['file_name'],
1362                  );
1363                  $file_path     = $attachment['file_path'];
1364                  $attachment_id = null;
1365                  $attached_file = null;
1366                  if ( isset( $existing_starter_content_posts[ 'attachment:' . $attachment['post_name'] ] ) ) {
1367                      $attachment_post = $existing_starter_content_posts[ 'attachment:' . $attachment['post_name'] ];
1368                      $attachment_id   = $attachment_post->ID;
1369                      $attached_file   = get_attached_file( $attachment_id );
1370                      if ( empty( $attached_file ) || ! file_exists( $attached_file ) ) {
1371                          $attachment_id = null;
1372                          $attached_file = null;
1373                      } elseif ( $this->get_stylesheet() !== get_post_meta( $attachment_post->ID, '_starter_content_theme', true ) ) {
1374  
1375                          // Re-generate attachment metadata since it was previously generated for a different theme.
1376                          $metadata = wp_generate_attachment_metadata( $attachment_post->ID, $attached_file );
1377                          wp_update_attachment_metadata( $attachment_id, $metadata );
1378                          update_post_meta( $attachment_id, '_starter_content_theme', $this->get_stylesheet() );
1379                      }
1380                  }
1381  
1382                  // Insert the attachment auto-draft because it doesn't yet exist or the attached file is gone.
1383                  if ( ! $attachment_id ) {
1384  
1385                      // Copy file to temp location so that original file won't get deleted from theme after sideloading.
1386                      $temp_file_name = wp_tempnam( wp_basename( $file_path ) );
1387                      if ( $temp_file_name && copy( $file_path, $temp_file_name ) ) {
1388                          $file_array['tmp_name'] = $temp_file_name;
1389                      }
1390                      if ( empty( $file_array['tmp_name'] ) ) {
1391                          continue;
1392                      }
1393  
1394                      $attachment_post_data = array_merge(
1395                          wp_array_slice_assoc( $attachment, array( 'post_title', 'post_content', 'post_excerpt' ) ),
1396                          array(
1397                              'post_status' => 'auto-draft', // So attachment will be garbage collected in a week if changeset is never published.
1398                          )
1399                      );
1400  
1401                      $attachment_id = media_handle_sideload( $file_array, 0, null, $attachment_post_data );
1402                      if ( is_wp_error( $attachment_id ) ) {
1403                          continue;
1404                      }
1405                      update_post_meta( $attachment_id, '_starter_content_theme', $this->get_stylesheet() );
1406                      update_post_meta( $attachment_id, '_customize_draft_post_name', $attachment['post_name'] );
1407                  }
1408  
1409                  $attachment_ids[ $symbol ] = $attachment_id;
1410              }
1411              $starter_content_auto_draft_post_ids = array_merge( $starter_content_auto_draft_post_ids, array_values( $attachment_ids ) );
1412          }
1413  
1414          // Posts & pages.
1415          if ( ! empty( $posts ) ) {
1416              foreach ( array_keys( $posts ) as $post_symbol ) {
1417                  if ( empty( $posts[ $post_symbol ]['post_type'] ) || empty( $posts[ $post_symbol ]['post_name'] ) ) {
1418                      continue;
1419                  }
1420                  $post_type = $posts[ $post_symbol ]['post_type'];
1421                  if ( ! empty( $posts[ $post_symbol ]['post_name'] ) ) {
1422                      $post_name = $posts[ $post_symbol ]['post_name'];
1423                  } elseif ( ! empty( $posts[ $post_symbol ]['post_title'] ) ) {
1424                      $post_name = sanitize_title( $posts[ $post_symbol ]['post_title'] );
1425                  } else {
1426                      continue;
1427                  }
1428  
1429                  // Use existing auto-draft post if one already exists with the same type and name.
1430                  if ( isset( $existing_starter_content_posts[ $post_type . ':' . $post_name ] ) ) {
1431                      $posts[ $post_symbol ]['ID'] = $existing_starter_content_posts[ $post_type . ':' . $post_name ]->ID;
1432                      continue;
1433                  }
1434  
1435                  // Translate the featured image symbol.
1436                  if ( ! empty( $posts[ $post_symbol ]['thumbnail'] )
1437                      && preg_match( '/^{{(?P<symbol>.+)}}$/', $posts[ $post_symbol ]['thumbnail'], $matches )
1438                      && isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1439                      $posts[ $post_symbol ]['meta_input']['_thumbnail_id'] = $attachment_ids[ $matches['symbol'] ];
1440                  }
1441  
1442                  if ( ! empty( $posts[ $post_symbol ]['template'] ) ) {
1443                      $posts[ $post_symbol ]['meta_input']['_wp_page_template'] = $posts[ $post_symbol ]['template'];
1444                  }
1445  
1446                  $r = $this->nav_menus->insert_auto_draft_post( $posts[ $post_symbol ] );
1447                  if ( $r instanceof WP_Post ) {
1448                      $posts[ $post_symbol ]['ID'] = $r->ID;
1449                  }
1450              }
1451  
1452              $starter_content_auto_draft_post_ids = array_merge( $starter_content_auto_draft_post_ids, wp_list_pluck( $posts, 'ID' ) );
1453          }
1454  
1455          // The nav_menus_created_posts setting is why nav_menus component is dependency for adding posts.
1456          if ( ! empty( $this->nav_menus ) && ! empty( $starter_content_auto_draft_post_ids ) ) {
1457              $setting_id = 'nav_menus_created_posts';
1458              $this->set_post_value( $setting_id, array_unique( array_values( $starter_content_auto_draft_post_ids ) ) );
1459              $this->pending_starter_content_settings_ids[] = $setting_id;
1460          }
1461  
1462          // Nav menus.
1463          $placeholder_id              = -1;
1464          $reused_nav_menu_setting_ids = array();
1465          foreach ( $nav_menus as $nav_menu_location => $nav_menu ) {
1466  
1467              $nav_menu_term_id    = null;
1468              $nav_menu_setting_id = null;
1469              $matches             = array();
1470  
1471              // Look for an existing placeholder menu with starter content to re-use.
1472              foreach ( $changeset_data as $setting_id => $setting_params ) {
1473                  $can_reuse = (
1474                      ! empty( $setting_params['starter_content'] )
1475                      &&
1476                      ! in_array( $setting_id, $reused_nav_menu_setting_ids, true )
1477                      &&
1478                      preg_match( '#^nav_menu\[(?P<nav_menu_id>-?\d+)\]$#', $setting_id, $matches )
1479                  );
1480                  if ( $can_reuse ) {
1481                      $nav_menu_term_id              = (int) $matches['nav_menu_id'];
1482                      $nav_menu_setting_id           = $setting_id;
1483                      $reused_nav_menu_setting_ids[] = $setting_id;
1484                      break;
1485                  }
1486              }
1487  
1488              if ( ! $nav_menu_term_id ) {
1489                  while ( isset( $changeset_data[ sprintf( 'nav_menu[%d]', $placeholder_id ) ] ) ) {
1490                      --$placeholder_id;
1491                  }
1492                  $nav_menu_term_id    = $placeholder_id;
1493                  $nav_menu_setting_id = sprintf( 'nav_menu[%d]', $placeholder_id );
1494              }
1495  
1496              $this->set_post_value(
1497                  $nav_menu_setting_id,
1498                  array(
1499                      'name' => $nav_menu['name'] ?? $nav_menu_location,
1500                  )
1501              );
1502              $this->pending_starter_content_settings_ids[] = $nav_menu_setting_id;
1503  
1504              // @todo Add support for menu_item_parent.
1505              $position = 0;
1506              foreach ( $nav_menu['items'] as $nav_menu_item ) {
1507                  $nav_menu_item_setting_id = sprintf( 'nav_menu_item[%d]', $placeholder_id-- );
1508                  if ( ! isset( $nav_menu_item['position'] ) ) {
1509                      $nav_menu_item['position'] = $position++;
1510                  }
1511                  $nav_menu_item['nav_menu_term_id'] = $nav_menu_term_id;
1512  
1513                  if ( isset( $nav_menu_item['object_id'] ) ) {
1514                      if ( 'post_type' === $nav_menu_item['type'] && preg_match( '/^{{(?P<symbol>.+)}}$/', $nav_menu_item['object_id'], $matches ) && isset( $posts[ $matches['symbol'] ] ) ) {
1515                          $nav_menu_item['object_id'] = $posts[ $matches['symbol'] ]['ID'];
1516                          if ( empty( $nav_menu_item['title'] ) ) {
1517                              $original_object        = get_post( $nav_menu_item['object_id'] );
1518                              $nav_menu_item['title'] = $original_object->post_title;
1519                          }
1520                      } else {
1521                          continue;
1522                      }
1523                  } else {
1524                      $nav_menu_item['object_id'] = 0;
1525                  }
1526  
1527                  if ( empty( $changeset_data[ $nav_menu_item_setting_id ] ) || ! empty( $changeset_data[ $nav_menu_item_setting_id ]['starter_content'] ) ) {
1528                      $this->set_post_value( $nav_menu_item_setting_id, $nav_menu_item );
1529                      $this->pending_starter_content_settings_ids[] = $nav_menu_item_setting_id;
1530                  }
1531              }
1532  
1533              $setting_id = sprintf( 'nav_menu_locations[%s]', $nav_menu_location );
1534              if ( empty( $changeset_data[ $setting_id ] ) || ! empty( $changeset_data[ $setting_id ]['starter_content'] ) ) {
1535                  $this->set_post_value( $setting_id, $nav_menu_term_id );
1536                  $this->pending_starter_content_settings_ids[] = $setting_id;
1537              }
1538          }
1539  
1540          // Options.
1541          foreach ( $options as $name => $value ) {
1542  
1543              // Serialize the value to check for post symbols.
1544              $value = maybe_serialize( $value );
1545  
1546              if ( is_serialized( $value ) ) {
1547                  if ( preg_match( '/s:\d+:"{{(?P<symbol>.+)}}"/', $value, $matches ) ) {
1548                      if ( isset( $posts[ $matches['symbol'] ] ) ) {
1549                          $symbol_match = $posts[ $matches['symbol'] ]['ID'];
1550                      } elseif ( isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1551                          $symbol_match = $attachment_ids[ $matches['symbol'] ];
1552                      }
1553  
1554                      // If we have any symbol matches, update the values.
1555                      if ( isset( $symbol_match ) ) {
1556                          // Replace found string matches with post IDs.
1557                          $value = str_replace( $matches[0], "i:{$symbol_match}", $value );
1558                      } else {
1559                          continue;
1560                      }
1561                  }
1562              } elseif ( preg_match( '/^{{(?P<symbol>.+)}}$/', $value, $matches ) ) {
1563                  if ( isset( $posts[ $matches['symbol'] ] ) ) {
1564                      $value = $posts[ $matches['symbol'] ]['ID'];
1565                  } elseif ( isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1566                      $value = $attachment_ids[ $matches['symbol'] ];
1567                  } else {
1568                      continue;
1569                  }
1570              }
1571  
1572              // Unserialize values after checking for post symbols, so they can be properly referenced.
1573              $value = maybe_unserialize( $value );
1574  
1575              if ( empty( $changeset_data[ $name ] ) || ! empty( $changeset_data[ $name ]['starter_content'] ) ) {
1576                  $this->set_post_value( $name, $value );
1577                  $this->pending_starter_content_settings_ids[] = $name;
1578              }
1579          }
1580  
1581          // Theme mods.
1582          foreach ( $theme_mods as $name => $value ) {
1583  
1584              // Serialize the value to check for post symbols.
1585              $value = maybe_serialize( $value );
1586  
1587              // Check if value was serialized.
1588              if ( is_serialized( $value ) ) {
1589                  if ( preg_match( '/s:\d+:"{{(?P<symbol>.+)}}"/', $value, $matches ) ) {
1590                      if ( isset( $posts[ $matches['symbol'] ] ) ) {
1591                          $symbol_match = $posts[ $matches['symbol'] ]['ID'];
1592                      } elseif ( isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1593                          $symbol_match = $attachment_ids[ $matches['symbol'] ];
1594                      }
1595  
1596                      // If we have any symbol matches, update the values.
1597                      if ( isset( $symbol_match ) ) {
1598                          // Replace found string matches with post IDs.
1599                          $value = str_replace( $matches[0], "i:{$symbol_match}", $value );
1600                      } else {
1601                          continue;
1602                      }
1603                  }
1604              } elseif ( preg_match( '/^{{(?P<symbol>.+)}}$/', $value, $matches ) ) {
1605                  if ( isset( $posts[ $matches['symbol'] ] ) ) {
1606                      $value = $posts[ $matches['symbol'] ]['ID'];
1607                  } elseif ( isset( $attachment_ids[ $matches['symbol'] ] ) ) {
1608                      $value = $attachment_ids[ $matches['symbol'] ];
1609                  } else {
1610                      continue;
1611                  }
1612              }
1613  
1614              // Unserialize values after checking for post symbols, so they can be properly referenced.
1615              $value = maybe_unserialize( $value );
1616  
1617              // Handle header image as special case since setting has a legacy format.
1618              if ( 'header_image' === $name ) {
1619                  $name     = 'header_image_data';
1620                  $metadata = wp_get_attachment_metadata( $value );
1621                  if ( empty( $metadata ) ) {
1622                      continue;
1623                  }
1624                  $value = array(
1625                      'attachment_id' => $value,
1626                      'url'           => wp_get_attachment_url( $value ),
1627                      'height'        => $metadata['height'],
1628                      'width'         => $metadata['width'],
1629                  );
1630              } elseif ( 'background_image' === $name ) {
1631                  $value = wp_get_attachment_url( $value );
1632              }
1633  
1634              if ( empty( $changeset_data[ $name ] ) || ! empty( $changeset_data[ $name ]['starter_content'] ) ) {
1635                  $this->set_post_value( $name, $value );
1636                  $this->pending_starter_content_settings_ids[] = $name;
1637              }
1638          }
1639  
1640          if ( ! empty( $this->pending_starter_content_settings_ids ) ) {
1641              if ( did_action( 'customize_register' ) ) {
1642                  $this->_save_starter_content_changeset();
1643              } else {
1644                  add_action( 'customize_register', array( $this, '_save_starter_content_changeset' ), 1000 );
1645              }
1646          }
1647      }
1648  
1649      /**
1650       * Prepares starter content attachments.
1651       *
1652       * Ensure that the attachments are valid and that they have slugs and file name/path.
1653       *
1654       * @since 4.7.0
1655       *
1656       * @param array $attachments Attachments.
1657       * @return array Prepared attachments.
1658       */
1659  	protected function prepare_starter_content_attachments( $attachments ) {
1660          $prepared_attachments = array();
1661          if ( empty( $attachments ) ) {
1662              return $prepared_attachments;
1663          }
1664  
1665          // Such is The WordPress Way.
1666          require_once  ABSPATH . 'wp-admin/includes/file.php';
1667          require_once  ABSPATH . 'wp-admin/includes/media.php';
1668          require_once  ABSPATH . 'wp-admin/includes/image.php';
1669  
1670          foreach ( $attachments as $symbol => $attachment ) {
1671  
1672              // A file is required and URLs to files are not currently allowed.
1673              if ( empty( $attachment['file'] ) || preg_match( '#^https?://$#', $attachment['file'] ) ) {
1674                  continue;
1675              }
1676  
1677              $file_path = null;
1678              if ( file_exists( $attachment['file'] ) ) {
1679                  $file_path = $attachment['file']; // Could be absolute path to file in plugin.
1680              } elseif ( is_child_theme() && file_exists( get_stylesheet_directory() . '/' . $attachment['file'] ) ) {
1681                  $file_path = get_stylesheet_directory() . '/' . $attachment['file'];
1682              } elseif ( file_exists( get_template_directory() . '/' . $attachment['file'] ) ) {
1683                  $file_path = get_template_directory() . '/' . $attachment['file'];
1684              } else {
1685                  continue;
1686              }
1687              $file_name = wp_basename( $attachment['file'] );
1688  
1689              // Skip file types that are not recognized.
1690              $checked_filetype = wp_check_filetype( $file_name );
1691              if ( empty( $checked_filetype['type'] ) ) {
1692                  continue;
1693              }
1694  
1695              // Ensure post_name is set since not automatically derived from post_title for new auto-draft posts.
1696              if ( empty( $attachment['post_name'] ) ) {
1697                  if ( ! empty( $attachment['post_title'] ) ) {
1698                      $attachment['post_name'] = sanitize_title( $attachment['post_title'] );
1699                  } else {
1700                      $attachment['post_name'] = sanitize_title( preg_replace( '/\.\w+$/', '', $file_name ) );
1701                  }
1702              }
1703  
1704              $attachment['file_name']         = $file_name;
1705              $attachment['file_path']         = $file_path;
1706              $prepared_attachments[ $symbol ] = $attachment;
1707          }
1708          return $prepared_attachments;
1709      }
1710  
1711      /**
1712       * Saves starter content changeset.
1713       *
1714       * @since 4.7.0
1715       */
1716  	public function _save_starter_content_changeset() {
1717  
1718          if ( empty( $this->pending_starter_content_settings_ids ) ) {
1719              return;
1720          }
1721  
1722          $this->save_changeset_post(
1723              array(
1724                  'data'            => array_fill_keys( $this->pending_starter_content_settings_ids, array( 'starter_content' => true ) ),
1725                  'starter_content' => true,
1726              )
1727          );
1728          $this->saved_starter_content_changeset = true;
1729  
1730          $this->pending_starter_content_settings_ids = array();
1731      }
1732  
1733      /**
1734       * Gets dirty pre-sanitized setting values in the current customized state.
1735       *
1736       * The returned array consists of a merge of three sources:
1737       * 1. If the theme is not currently active, then the base array is any stashed
1738       *    theme mods that were modified previously but never published.
1739       * 2. The values from the current changeset, if it exists.
1740       * 3. If the user can customize, the values parsed from the incoming
1741       *    `$_POST['customized']` JSON data.
1742       * 4. Any programmatically-set post values via `WP_Customize_Manager::set_post_value()`.
1743       *
1744       * The name "unsanitized_post_values" is a carry-over from when the customized
1745       * state was exclusively sourced from `$_POST['customized']`. Nevertheless,
1746       * the value returned will come from the current changeset post and from the
1747       * incoming post data.
1748       *
1749       * @since 4.1.1
1750       * @since 4.7.0 Added `$args` parameter and merging with changeset values and stashed theme mods.
1751       *
1752       * @param array $args {
1753       *     Args.
1754       *
1755       *     @type bool $exclude_changeset Whether the changeset values should also be excluded. Defaults to false.
1756       *     @type bool $exclude_post_data Whether the post input values should also be excluded. Defaults to false when lacking the customize capability.
1757       * }
1758       * @return array
1759       */
1760  	public function unsanitized_post_values( $args = array() ) {
1761          $args = array_merge(
1762              array(
1763                  'exclude_changeset' => false,
1764                  'exclude_post_data' => ! current_user_can( 'customize' ),
1765              ),
1766              $args
1767          );
1768  
1769          $values = array();
1770  
1771          // Let default values be from the stashed theme mods if doing a theme switch and if no changeset is present.
1772          if ( ! $this->is_theme_active() ) {
1773              $stashed_theme_mods = get_option( 'customize_stashed_theme_mods' );
1774              $stylesheet         = $this->get_stylesheet();
1775              if ( isset( $stashed_theme_mods[ $stylesheet ] ) ) {
1776                  $values = array_merge( $values, wp_list_pluck( $stashed_theme_mods[ $stylesheet ], 'value' ) );
1777              }
1778          }
1779  
1780          if ( ! $args['exclude_changeset'] ) {
1781              foreach ( $this->changeset_data() as $setting_id => $setting_params ) {
1782                  if ( ! array_key_exists( 'value', $setting_params ) ) {
1783                      continue;
1784                  }
1785                  if ( isset( $setting_params['type'] ) && 'theme_mod' === $setting_params['type'] ) {
1786  
1787                      // Ensure that theme mods values are only used if they were saved under the active theme.
1788                      $namespace_pattern = '/^(?P<stylesheet>.+?)::(?P<setting_id>.+)$/';
1789                      if ( preg_match( $namespace_pattern, $setting_id, $matches ) && $this->get_stylesheet() === $matches['stylesheet'] ) {
1790                          $values[ $matches['setting_id'] ] = $setting_params['value'];
1791                      }
1792                  } else {
1793                      $values[ $setting_id ] = $setting_params['value'];
1794                  }
1795              }
1796          }
1797  
1798          if ( ! $args['exclude_post_data'] ) {
1799              if ( ! isset( $this->_post_values ) ) {
1800                  if ( isset( $_POST['customized'] ) ) {
1801                      $post_values = json_decode( wp_unslash( $_POST['customized'] ), true );
1802                  } else {
1803                      $post_values = array();
1804                  }
1805                  if ( is_array( $post_values ) ) {
1806                      $this->_post_values = $post_values;
1807                  } else {
1808                      $this->_post_values = array();
1809                  }
1810              }
1811              $values = array_merge( $values, $this->_post_values );
1812          }
1813          return $values;
1814      }
1815  
1816      /**
1817       * Returns the sanitized value for a given setting from the current customized state.
1818       *
1819       * The name "post_value" is a carry-over from when the customized state was exclusively
1820       * sourced from `$_POST['customized']`. Nevertheless, the value returned will come
1821       * from the current changeset post and from the incoming post data.
1822       *
1823       * @since 3.4.0
1824       * @since 4.1.1 Introduced the `$default_value` parameter.
1825       * @since 4.6.0 `$default_value` is now returned early when the setting post value is invalid.
1826       *
1827       * @see WP_REST_Server::dispatch()
1828       * @see WP_REST_Request::sanitize_params()
1829       * @see WP_REST_Request::has_valid_params()
1830       *
1831       * @param WP_Customize_Setting $setting       A WP_Customize_Setting derived object.
1832       * @param mixed                $default_value Value returned if `$setting` has no post value (added in 4.2.0)
1833       *                                            or the post value is invalid (added in 4.6.0).
1834       * @return string|mixed Sanitized value or the `$default_value` provided.
1835       */
1836  	public function post_value( $setting, $default_value = null ) {
1837          $post_values = $this->unsanitized_post_values();
1838          if ( ! array_key_exists( $setting->id, $post_values ) ) {
1839              return $default_value;
1840          }
1841  
1842          $value = $post_values[ $setting->id ];
1843          $valid = $setting->validate( $value );
1844          if ( is_wp_error( $valid ) ) {
1845              return $default_value;
1846          }
1847  
1848          $value = $setting->sanitize( $value );
1849          if ( is_null( $value ) || is_wp_error( $value ) ) {
1850              return $default_value;
1851          }
1852  
1853          return $value;
1854      }
1855  
1856      /**
1857       * Overrides a setting's value in the current customized state.
1858       *
1859       * The name "post_value" is a carry-over from when the customized state was
1860       * exclusively sourced from `$_POST['customized']`.
1861       *
1862       * @since 4.2.0
1863       *
1864       * @param string $setting_id ID for the WP_Customize_Setting instance.
1865       * @param mixed  $value      Post value.
1866       */
1867  	public function set_post_value( $setting_id, $value ) {
1868          $this->unsanitized_post_values(); // Populate _post_values from $_POST['customized'].
1869          $this->_post_values[ $setting_id ] = $value;
1870  
1871          /**
1872           * Announces when a specific setting's unsanitized post value has been set.
1873           *
1874           * Fires when the WP_Customize_Manager::set_post_value() method is called.
1875           *
1876           * The dynamic portion of the hook name, `$setting_id`, refers to the setting ID.
1877           *
1878           * @since 4.4.0
1879           *
1880           * @param mixed                $value   Unsanitized setting post value.
1881           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
1882           */
1883          do_action( "customize_post_value_set_{$setting_id}", $value, $this );
1884  
1885          /**
1886           * Announces when any setting's unsanitized post value has been set.
1887           *
1888           * Fires when the WP_Customize_Manager::set_post_value() method is called.
1889           *
1890           * This is useful for `WP_Customize_Setting` instances to watch
1891           * in order to update a cached previewed value.
1892           *
1893           * @since 4.4.0
1894           *
1895           * @param string               $setting_id Setting ID.
1896           * @param mixed                $value      Unsanitized setting post value.
1897           * @param WP_Customize_Manager $manager    WP_Customize_Manager instance.
1898           */
1899          do_action( 'customize_post_value_set', $setting_id, $value, $this );
1900      }
1901  
1902      /**
1903       * Prints JavaScript settings.
1904       *
1905       * @since 3.4.0
1906       */
1907  	public function customize_preview_init() {
1908  
1909          /*
1910           * Now that Customizer previews are loaded into iframes via GET requests
1911           * and natural URLs with transaction UUIDs added, we need to ensure that
1912           * the responses are never cached by proxies. In practice, this will not
1913           * be needed if the user is logged-in anyway. But if anonymous access is
1914           * allowed then the auth cookies would not be sent and WordPress would
1915           * not send no-cache headers by default.
1916           */
1917          if ( ! headers_sent() ) {
1918              nocache_headers();
1919              header( 'X-Robots: noindex, nofollow, noarchive' );
1920              header( 'X-Robots-Tag: noindex, nofollow, noarchive' );
1921          }
1922          add_filter( 'wp_robots', 'wp_robots_no_robots' );
1923          add_filter( 'wp_headers', array( $this, 'filter_iframe_security_headers' ) );
1924  
1925          /*
1926           * If preview is being served inside the customizer preview iframe, and
1927           * if the user doesn't have customize capability, then it is assumed
1928           * that the user's session has expired and they need to re-authenticate.
1929           */
1930          if ( $this->messenger_channel && ! current_user_can( 'customize' ) ) {
1931              $this->wp_die(
1932                  -1,
1933                  sprintf(
1934                      /* translators: %s: customize_messenger_channel */
1935                      __( 'Unauthorized. You may remove the %s param to preview as frontend.' ),
1936                      '<code>customize_messenger_channel</code>'
1937                  )
1938              );
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() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
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, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ); ?>;
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, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ),
2222                              wp_json_encode( $setting->js_value(), JSON_HEX_TAG | JSON_UNESCAPED_SLASHES )
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() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
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       * @return never
2432       */
2433  	public function save() {
2434          if ( ! is_user_logged_in() ) {
2435              wp_send_json_error( 'unauthenticated' );
2436          }
2437  
2438          if ( ! $this->is_preview() ) {
2439              wp_send_json_error( 'not_preview' );
2440          }
2441  
2442          $action = 'save-customize_' . $this->get_stylesheet();
2443          if ( ! check_ajax_referer( $action, 'nonce', false ) ) {
2444              wp_send_json_error( 'invalid_nonce' );
2445          }
2446  
2447          $changeset_post_id = $this->changeset_post_id();
2448          $is_new_changeset  = empty( $changeset_post_id );
2449          if ( $is_new_changeset ) {
2450              if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->create_posts ) ) {
2451                  wp_send_json_error( 'cannot_create_changeset_post' );
2452              }
2453          } else {
2454              if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id ) ) {
2455                  wp_send_json_error( 'cannot_edit_changeset_post' );
2456              }
2457          }
2458  
2459          if ( ! empty( $_POST['customize_changeset_data'] ) ) {
2460              $input_changeset_data = json_decode( wp_unslash( $_POST['customize_changeset_data'] ), true );
2461              if ( ! is_array( $input_changeset_data ) ) {
2462                  wp_send_json_error( 'invalid_customize_changeset_data' );
2463              }
2464          } else {
2465              $input_changeset_data = array();
2466          }
2467  
2468          // Validate title.
2469          $changeset_title = null;
2470          if ( isset( $_POST['customize_changeset_title'] ) ) {
2471              $changeset_title = sanitize_text_field( wp_unslash( $_POST['customize_changeset_title'] ) );
2472          }
2473  
2474          // Validate changeset status param.
2475          $is_publish       = null;
2476          $changeset_status = null;
2477          if ( isset( $_POST['customize_changeset_status'] ) ) {
2478              $changeset_status = wp_unslash( $_POST['customize_changeset_status'] );
2479              if ( ! get_post_status_object( $changeset_status ) || ! in_array( $changeset_status, array( 'draft', 'pending', 'publish', 'future' ), true ) ) {
2480                  wp_send_json_error( 'bad_customize_changeset_status', 400 );
2481              }
2482              $is_publish = ( 'publish' === $changeset_status || 'future' === $changeset_status );
2483              if ( $is_publish && ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->publish_posts ) ) {
2484                  wp_send_json_error( 'changeset_publish_unauthorized', 403 );
2485              }
2486          }
2487  
2488          /*
2489           * Validate changeset date param. Date is assumed to be in local time for
2490           * the WP if in MySQL format (YYYY-MM-DD HH:MM:SS). Otherwise, the date
2491           * is parsed with strtotime() so that ISO date format may be supplied
2492           * or a string like "+10 minutes".
2493           */
2494          $changeset_date_gmt = null;
2495          if ( isset( $_POST['customize_changeset_date'] ) ) {
2496              $changeset_date = wp_unslash( $_POST['customize_changeset_date'] );
2497              if ( preg_match( '/^\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d$/', $changeset_date ) ) {
2498                  $mm         = substr( $changeset_date, 5, 2 );
2499                  $jj         = substr( $changeset_date, 8, 2 );
2500                  $aa         = substr( $changeset_date, 0, 4 );
2501                  $valid_date = wp_checkdate( $mm, $jj, $aa, $changeset_date );
2502                  if ( ! $valid_date ) {
2503                      wp_send_json_error( 'bad_customize_changeset_date', 400 );
2504                  }
2505                  $changeset_date_gmt = get_gmt_from_date( $changeset_date );
2506              } else {
2507                  $timestamp = strtotime( $changeset_date );
2508                  if ( ! $timestamp ) {
2509                      wp_send_json_error( 'bad_customize_changeset_date', 400 );
2510                  }
2511                  $changeset_date_gmt = gmdate( 'Y-m-d H:i:s', $timestamp );
2512              }
2513          }
2514  
2515          $lock_user_id = null;
2516          $autosave     = ! empty( $_POST['customize_changeset_autosave'] );
2517          if ( ! $is_new_changeset ) {
2518              $lock_user_id = wp_check_post_lock( $this->changeset_post_id() );
2519          }
2520  
2521          // Force request to autosave when changeset is locked.
2522          if ( $lock_user_id && ! $autosave ) {
2523              $autosave           = true;
2524              $changeset_status   = null;
2525              $changeset_date_gmt = null;
2526          }
2527  
2528          if ( $autosave && ! defined( 'DOING_AUTOSAVE' ) ) { // Back-compat.
2529              define( 'DOING_AUTOSAVE', true );
2530          }
2531  
2532          $autosaved = false;
2533          $r         = $this->save_changeset_post(
2534              array(
2535                  'status'   => $changeset_status,
2536                  'title'    => $changeset_title,
2537                  'date_gmt' => $changeset_date_gmt,
2538                  'data'     => $input_changeset_data,
2539                  'autosave' => $autosave,
2540              )
2541          );
2542          if ( $autosave && ! is_wp_error( $r ) ) {
2543              $autosaved = true;
2544          }
2545  
2546          // If the changeset was locked and an autosave request wasn't itself an error, then now explicitly return with a failure.
2547          if ( $lock_user_id && ! is_wp_error( $r ) ) {
2548              $r = new WP_Error(
2549                  'changeset_locked',
2550                  __( 'Changeset is being edited by other user.' ),
2551                  array(
2552                      'lock_user' => $this->get_lock_user_data( $lock_user_id ),
2553                  )
2554              );
2555          }
2556  
2557          if ( is_wp_error( $r ) ) {
2558              $response = array(
2559                  'message' => $r->get_error_message(),
2560                  'code'    => $r->get_error_code(),
2561              );
2562              if ( is_array( $r->get_error_data() ) ) {
2563                  $response = array_merge( $response, $r->get_error_data() );
2564              } else {
2565                  $response['data'] = $r->get_error_data();
2566              }
2567          } else {
2568              $response       = $r;
2569              $changeset_post = get_post( $this->changeset_post_id() );
2570  
2571              // Dismiss all other auto-draft changeset posts for this user (they serve like autosave revisions), as there should only be one.
2572              if ( $is_new_changeset ) {
2573                  $this->dismiss_user_auto_draft_changesets();
2574              }
2575  
2576              // Note that if the changeset status was publish, then it will get set to Trash if revisions are not supported.
2577              $response['changeset_status'] = $changeset_post->post_status;
2578              if ( $is_publish && 'trash' === $response['changeset_status'] ) {
2579                  $response['changeset_status'] = 'publish';
2580              }
2581  
2582              if ( 'publish' !== $response['changeset_status'] ) {
2583                  $this->set_changeset_lock( $changeset_post->ID );
2584              }
2585  
2586              if ( 'future' === $response['changeset_status'] ) {
2587                  $response['changeset_date'] = $changeset_post->post_date;
2588              }
2589  
2590              if ( 'publish' === $response['changeset_status'] || 'trash' === $response['changeset_status'] ) {
2591                  $response['next_changeset_uuid'] = wp_generate_uuid4();
2592              }
2593          }
2594  
2595          if ( $autosave ) {
2596              $response['autosaved'] = $autosaved;
2597          }
2598  
2599          if ( isset( $response['setting_validities'] ) ) {
2600              $response['setting_validities'] = array_map( array( $this, 'prepare_setting_validity_for_js' ), $response['setting_validities'] );
2601          }
2602  
2603          /**
2604           * Filters response data for a successful customize_save Ajax request.
2605           *
2606           * This filter does not apply if there was a nonce or authentication failure.
2607           *
2608           * @since 4.2.0
2609           *
2610           * @param array                $response Additional information passed back to the 'saved'
2611           *                                       event on `wp.customize`.
2612           * @param WP_Customize_Manager $manager  WP_Customize_Manager instance.
2613           */
2614          $response = apply_filters( 'customize_save_response', $response, $this );
2615  
2616          if ( is_wp_error( $r ) ) {
2617              wp_send_json_error( $response );
2618          } else {
2619              wp_send_json_success( $response );
2620          }
2621      }
2622  
2623      /**
2624       * Saves the post for the loaded changeset.
2625       *
2626       * @since 4.7.0
2627       *
2628       * @param array $args {
2629       *     Args for changeset post.
2630       *
2631       *     @type array  $data            Optional additional changeset data. Values will be merged on top of any existing post values.
2632       *     @type string $status          Post status. Optional. If supplied, the save will be transactional and a post revision will be allowed.
2633       *     @type string $title           Post title. Optional.
2634       *     @type string $date_gmt        Date in GMT. Optional.
2635       *     @type int    $user_id         ID for user who is saving the changeset. Optional, defaults to the current user ID.
2636       *     @type bool   $starter_content Whether the data is starter content. If false (default), then $starter_content will be cleared for any $data being saved.
2637       *     @type bool   $autosave        Whether this is a request to create an autosave revision.
2638       * }
2639       *
2640       * @return array|WP_Error Returns array on success and WP_Error with array data on error.
2641       */
2642  	public function save_changeset_post( $args = array() ) {
2643  
2644          $args = array_merge(
2645              array(
2646                  'status'          => null,
2647                  'title'           => null,
2648                  'data'            => array(),
2649                  'date_gmt'        => null,
2650                  'user_id'         => get_current_user_id(),
2651                  'starter_content' => false,
2652                  'autosave'        => false,
2653              ),
2654              $args
2655          );
2656  
2657          $changeset_post_id       = $this->changeset_post_id();
2658          $existing_changeset_data = array();
2659          if ( $changeset_post_id ) {
2660              $existing_status = get_post_status( $changeset_post_id );
2661              if ( 'publish' === $existing_status || 'trash' === $existing_status ) {
2662                  return new WP_Error(
2663                      'changeset_already_published',
2664                      __( 'The previous set of changes has already been published. Please try saving your current set of changes again.' ),
2665                      array(
2666                          'next_changeset_uuid' => wp_generate_uuid4(),
2667                      )
2668                  );
2669              }
2670  
2671              $existing_changeset_data = $this->get_changeset_post_data( $changeset_post_id );
2672              if ( is_wp_error( $existing_changeset_data ) ) {
2673                  return $existing_changeset_data;
2674              }
2675          }
2676  
2677          // Fail if attempting to publish but publish hook is missing.
2678          if ( 'publish' === $args['status'] && false === has_action( 'transition_post_status', '_wp_customize_publish_changeset' ) ) {
2679              return new WP_Error( 'missing_publish_callback' );
2680          }
2681  
2682          // Validate date.
2683          $now = gmdate( 'Y-m-d H:i:59' );
2684          if ( $args['date_gmt'] ) {
2685              $is_future_dated = ( mysql2date( 'U', $args['date_gmt'], false ) > mysql2date( 'U', $now, false ) );
2686              if ( ! $is_future_dated ) {
2687                  return new WP_Error( 'not_future_date', __( 'You must supply a future date to schedule.' ) ); // Only future dates are allowed.
2688              }
2689  
2690              if ( ! $this->is_theme_active() && ( 'future' === $args['status'] || $is_future_dated ) ) {
2691                  return new WP_Error( 'cannot_schedule_theme_switches' ); // This should be allowed in the future, when theme is a regular setting.
2692              }
2693              $will_remain_auto_draft = ( ! $args['status'] && ( ! $changeset_post_id || 'auto-draft' === get_post_status( $changeset_post_id ) ) );
2694              if ( $will_remain_auto_draft ) {
2695                  return new WP_Error( 'cannot_supply_date_for_auto_draft_changeset' );
2696              }
2697          } elseif ( $changeset_post_id && 'future' === $args['status'] ) {
2698  
2699              // Fail if the new status is future but the existing post's date is not in the future.
2700              $changeset_post = get_post( $changeset_post_id );
2701              if ( mysql2date( 'U', $changeset_post->post_date_gmt, false ) <= mysql2date( 'U', $now, false ) ) {
2702                  return new WP_Error( 'not_future_date', __( 'You must supply a future date to schedule.' ) );
2703              }
2704          }
2705  
2706          if ( ! empty( $is_future_dated ) && 'publish' === $args['status'] ) {
2707              $args['status'] = 'future';
2708          }
2709  
2710          // Validate autosave param. See _wp_post_revision_fields() for why these fields are disallowed.
2711          if ( $args['autosave'] ) {
2712              if ( $args['date_gmt'] ) {
2713                  return new WP_Error( 'illegal_autosave_with_date_gmt' );
2714              } elseif ( $args['status'] ) {
2715                  return new WP_Error( 'illegal_autosave_with_status' );
2716              } elseif ( $args['user_id'] && get_current_user_id() !== $args['user_id'] ) {
2717                  return new WP_Error( 'illegal_autosave_with_non_current_user' );
2718              }
2719          }
2720  
2721          // The request was made via wp.customize.previewer.save().
2722          $update_transactionally = (bool) $args['status'];
2723          $allow_revision         = (bool) $args['status'];
2724  
2725          // Amend post values with any supplied data.
2726          foreach ( $args['data'] as $setting_id => $setting_params ) {
2727              if ( is_array( $setting_params ) && array_key_exists( 'value', $setting_params ) ) {
2728                  $this->set_post_value( $setting_id, $setting_params['value'] ); // Add to post values so that they can be validated and sanitized.
2729              }
2730          }
2731  
2732          // Note that in addition to post data, this will include any stashed theme mods.
2733          $post_values = $this->unsanitized_post_values(
2734              array(
2735                  'exclude_changeset' => true,
2736                  'exclude_post_data' => false,
2737              )
2738          );
2739          $this->add_dynamic_settings( array_keys( $post_values ) ); // Ensure settings get created even if they lack an input value.
2740  
2741          /*
2742           * Get list of IDs for settings that have values different from what is currently
2743           * saved in the changeset. By skipping any values that are already the same, the
2744           * subset of changed settings can be passed into validate_setting_values to prevent
2745           * an underprivileged modifying a single setting for which they have the capability
2746           * from being blocked from saving. This also prevents a user from touching of the
2747           * previous saved settings and overriding the associated user_id if they made no change.
2748           */
2749          $changed_setting_ids = array();
2750          foreach ( $post_values as $setting_id => $setting_value ) {
2751              $setting = $this->get_setting( $setting_id );
2752  
2753              if ( $setting && 'theme_mod' === $setting->type ) {
2754                  $prefixed_setting_id = $this->get_stylesheet() . '::' . $setting->id;
2755              } else {
2756                  $prefixed_setting_id = $setting_id;
2757              }
2758  
2759              $is_value_changed = (
2760                  ! isset( $existing_changeset_data[ $prefixed_setting_id ] )
2761                  ||
2762                  ! array_key_exists( 'value', $existing_changeset_data[ $prefixed_setting_id ] )
2763                  ||
2764                  $existing_changeset_data[ $prefixed_setting_id ]['value'] !== $setting_value
2765              );
2766              if ( $is_value_changed ) {
2767                  $changed_setting_ids[] = $setting_id;
2768              }
2769          }
2770  
2771          /**
2772           * Fires before save validation happens.
2773           *
2774           * Plugins can add just-in-time {@see 'customize_validate_{$this->ID}'} filters
2775           * at this point to catch any settings registered after `customize_register`.
2776           * The dynamic portion of the hook name, `$this->ID` refers to the setting ID.
2777           *
2778           * @since 4.6.0
2779           *
2780           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
2781           */
2782          do_action( 'customize_save_validation_before', $this );
2783  
2784          // Validate settings.
2785          $validated_values      = array_merge(
2786              array_fill_keys( array_keys( $args['data'] ), null ), // Make sure existence/capability checks are done on value-less setting updates.
2787              $post_values
2788          );
2789          $setting_validities    = $this->validate_setting_values(
2790              $validated_values,
2791              array(
2792                  'validate_capability' => true,
2793                  'validate_existence'  => true,
2794              )
2795          );
2796          $invalid_setting_count = count( array_filter( $setting_validities, 'is_wp_error' ) );
2797  
2798          /*
2799           * Short-circuit if there are invalid settings the update is transactional.
2800           * A changeset update is transactional when a status is supplied in the request.
2801           */
2802          if ( $update_transactionally && $invalid_setting_count > 0 ) {
2803              $response = array(
2804                  'setting_validities' => $setting_validities,
2805                  /* translators: %s: Number of invalid settings. */
2806                  '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 ) ),
2807              );
2808              return new WP_Error( 'transaction_fail', '', $response );
2809          }
2810  
2811          // Obtain/merge data for changeset.
2812          $original_changeset_data = $this->get_changeset_post_data( $changeset_post_id );
2813          $data                    = $original_changeset_data;
2814          if ( is_wp_error( $data ) ) {
2815              $data = array();
2816          }
2817  
2818          // Ensure that all post values are included in the changeset data.
2819          foreach ( $post_values as $setting_id => $post_value ) {
2820              if ( ! isset( $args['data'][ $setting_id ] ) ) {
2821                  $args['data'][ $setting_id ] = array();
2822              }
2823              if ( ! isset( $args['data'][ $setting_id ]['value'] ) ) {
2824                  $args['data'][ $setting_id ]['value'] = $post_value;
2825              }
2826          }
2827  
2828          foreach ( $args['data'] as $setting_id => $setting_params ) {
2829              $setting = $this->get_setting( $setting_id );
2830              if ( ! $setting || ! $setting->check_capabilities() ) {
2831                  continue;
2832              }
2833  
2834              // Skip updating changeset for invalid setting values.
2835              if ( isset( $setting_validities[ $setting_id ] ) && is_wp_error( $setting_validities[ $setting_id ] ) ) {
2836                  continue;
2837              }
2838  
2839              $changeset_setting_id = $setting_id;
2840              if ( 'theme_mod' === $setting->type ) {
2841                  $changeset_setting_id = sprintf( '%s::%s', $this->get_stylesheet(), $setting_id );
2842              }
2843  
2844              if ( null === $setting_params ) {
2845                  // Remove setting from changeset entirely.
2846                  unset( $data[ $changeset_setting_id ] );
2847              } else {
2848  
2849                  if ( ! isset( $data[ $changeset_setting_id ] ) ) {
2850                      $data[ $changeset_setting_id ] = array();
2851                  }
2852  
2853                  // Merge any additional setting params that have been supplied with the existing params.
2854                  $merged_setting_params = array_merge( $data[ $changeset_setting_id ], $setting_params );
2855  
2856                  // Skip updating setting params if unchanged (ensuring the user_id is not overwritten).
2857                  if ( $data[ $changeset_setting_id ] === $merged_setting_params ) {
2858                      continue;
2859                  }
2860  
2861                  $data[ $changeset_setting_id ] = array_merge(
2862                      $merged_setting_params,
2863                      array(
2864                          'type'              => $setting->type,
2865                          'user_id'           => $args['user_id'],
2866                          'date_modified_gmt' => current_time( 'mysql', true ),
2867                      )
2868                  );
2869  
2870                  // Clear starter_content flag in data if changeset is not explicitly being updated for starter content.
2871                  if ( empty( $args['starter_content'] ) ) {
2872                      unset( $data[ $changeset_setting_id ]['starter_content'] );
2873                  }
2874              }
2875          }
2876  
2877          $filter_context = array(
2878              'uuid'          => $this->changeset_uuid(),
2879              'title'         => $args['title'],
2880              'status'        => $args['status'],
2881              'date_gmt'      => $args['date_gmt'],
2882              'post_id'       => $changeset_post_id,
2883              'previous_data' => is_wp_error( $original_changeset_data ) ? array() : $original_changeset_data,
2884              'manager'       => $this,
2885          );
2886  
2887          /**
2888           * Filters the settings' data that will be persisted into the changeset.
2889           *
2890           * Plugins may amend additional data (such as additional meta for settings) into the changeset with this filter.
2891           *
2892           * @since 4.7.0
2893           *
2894           * @param array $data Updated changeset data, mapping setting IDs to arrays containing a $value item and optionally other metadata.
2895           * @param array $context {
2896           *     Filter context.
2897           *
2898           *     @type string               $uuid          Changeset UUID.
2899           *     @type string               $title         Requested title for the changeset post.
2900           *     @type string               $status        Requested status for the changeset post.
2901           *     @type string               $date_gmt      Requested date for the changeset post in MySQL format and GMT timezone.
2902           *     @type int|false            $post_id       Post ID for the changeset, or false if it doesn't exist yet.
2903           *     @type array                $previous_data Previous data contained in the changeset.
2904           *     @type WP_Customize_Manager $manager       Manager instance.
2905           * }
2906           */
2907          $data = apply_filters( 'customize_changeset_save_data', $data, $filter_context );
2908  
2909          // Switch theme if publishing changes now.
2910          if ( 'publish' === $args['status'] && ! $this->is_theme_active() ) {
2911              // Temporarily stop previewing the theme to allow switch_themes() to operate properly.
2912              $this->stop_previewing_theme();
2913              switch_theme( $this->get_stylesheet() );
2914              update_option( 'theme_switched_via_customizer', true );
2915              $this->start_previewing_theme();
2916          }
2917  
2918          // Gather the data for wp_insert_post()/wp_update_post().
2919          $post_array = array(
2920              // JSON_UNESCAPED_SLASHES is only to improve readability as slashes needn't be escaped in storage.
2921              'post_content' => wp_json_encode( $data, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT ),
2922          );
2923          if ( $args['title'] ) {
2924              $post_array['post_title'] = $args['title'];
2925          }
2926          if ( $changeset_post_id ) {
2927              $post_array['ID'] = $changeset_post_id;
2928          } else {
2929              $post_array['post_type']   = 'customize_changeset';
2930              $post_array['post_name']   = $this->changeset_uuid();
2931              $post_array['post_status'] = 'auto-draft';
2932          }
2933          if ( $args['status'] ) {
2934              $post_array['post_status'] = $args['status'];
2935          }
2936  
2937          // Reset post date to now if we are publishing, otherwise pass post_date_gmt and translate for post_date.
2938          if ( 'publish' === $args['status'] ) {
2939              $post_array['post_date_gmt'] = '0000-00-00 00:00:00';
2940              $post_array['post_date']     = '0000-00-00 00:00:00';
2941          } elseif ( $args['date_gmt'] ) {
2942              $post_array['post_date_gmt'] = $args['date_gmt'];
2943              $post_array['post_date']     = get_date_from_gmt( $args['date_gmt'] );
2944          } elseif ( $changeset_post_id && 'auto-draft' === get_post_status( $changeset_post_id ) ) {
2945              /*
2946               * Keep bumping the date for the auto-draft whenever it is modified;
2947               * this extends its life, preserving it from garbage-collection via
2948               * wp_delete_auto_drafts().
2949               */
2950              $post_array['post_date']     = current_time( 'mysql' );
2951              $post_array['post_date_gmt'] = '';
2952          }
2953  
2954          $this->store_changeset_revision = $allow_revision;
2955          add_filter( 'wp_save_post_revision_post_has_changed', array( $this, '_filter_revision_post_has_changed' ), 5, 3 );
2956  
2957          /*
2958           * Update the changeset post. The publish_customize_changeset action will cause the settings in the
2959           * changeset to be saved via WP_Customize_Setting::save(). Updating a post with publish status will
2960           * trigger WP_Customize_Manager::publish_changeset_values().
2961           */
2962          add_filter( 'wp_insert_post_data', array( $this, 'preserve_insert_changeset_post_content' ), 5, 3 );
2963          if ( $changeset_post_id ) {
2964              if ( $args['autosave'] && 'auto-draft' !== get_post_status( $changeset_post_id ) ) {
2965                  // See _wp_translate_postdata() for why this is required as it will use the edit_post meta capability.
2966                  add_filter( 'map_meta_cap', array( $this, 'grant_edit_post_capability_for_changeset' ), 10, 4 );
2967  
2968                  $post_array['post_ID']   = $post_array['ID'];
2969                  $post_array['post_type'] = 'customize_changeset';
2970  
2971                  $r = wp_create_post_autosave( wp_slash( $post_array ) );
2972  
2973                  remove_filter( 'map_meta_cap', array( $this, 'grant_edit_post_capability_for_changeset' ), 10 );
2974              } else {
2975                  $post_array['edit_date'] = true; // Prevent date clearing.
2976  
2977                  $r = wp_update_post( wp_slash( $post_array ), true );
2978  
2979                  // Delete autosave revision for user when the changeset is updated.
2980                  if ( ! empty( $args['user_id'] ) ) {
2981                      $autosave_draft = wp_get_post_autosave( $changeset_post_id, $args['user_id'] );
2982                      if ( $autosave_draft ) {
2983                          wp_delete_post( $autosave_draft->ID, true );
2984                      }
2985                  }
2986              }
2987          } else {
2988              $r = wp_insert_post( wp_slash( $post_array ), true );
2989              if ( ! is_wp_error( $r ) ) {
2990                  $this->_changeset_post_id = $r; // Update cached post ID for the loaded changeset.
2991              }
2992          }
2993          remove_filter( 'wp_insert_post_data', array( $this, 'preserve_insert_changeset_post_content' ), 5 );
2994  
2995          $this->_changeset_data = null; // Reset so WP_Customize_Manager::changeset_data() will re-populate with updated contents.
2996  
2997          remove_filter( 'wp_save_post_revision_post_has_changed', array( $this, '_filter_revision_post_has_changed' ) );
2998  
2999          $response = array(
3000              'setting_validities' => $setting_validities,
3001          );
3002  
3003          if ( is_wp_error( $r ) ) {
3004              $response['changeset_post_save_failure'] = $r->get_error_code();
3005              return new WP_Error( 'changeset_post_save_failure', '', $response );
3006          }
3007  
3008          return $response;
3009      }
3010  
3011      /**
3012       * Preserves the initial JSON post_content passed to save into the post.
3013       *
3014       * This is needed to prevent KSES and other {@see 'content_save_pre'} filters
3015       * from corrupting JSON data.
3016       *
3017       * Note that WP_Customize_Manager::validate_setting_values() have already
3018       * run on the setting values being serialized as JSON into the post content
3019       * so it is pre-sanitized.
3020       *
3021       * Also, the sanitization logic is re-run through the respective
3022       * WP_Customize_Setting::sanitize() method when being read out of the
3023       * changeset, via WP_Customize_Manager::post_value(), and this sanitized
3024       * value will also be sent into WP_Customize_Setting::update() for
3025       * persisting to the DB.
3026       *
3027       * Multiple users can collaborate on a single changeset, where one user may
3028       * have the unfiltered_html capability but another may not. A user with
3029       * unfiltered_html may add a script tag to some field which needs to be kept
3030       * intact even when another user updates the changeset to modify another field
3031       * when they do not have unfiltered_html.
3032       *
3033       * @since 5.4.1
3034       *
3035       * @param array $data                An array of slashed and processed post data.
3036       * @param array $postarr             An array of sanitized (and slashed) but otherwise unmodified post data.
3037       * @param array $unsanitized_postarr An array of slashed yet *unsanitized* and unprocessed post data as originally passed to wp_insert_post().
3038       * @return array Filtered post data.
3039       */
3040  	public function preserve_insert_changeset_post_content( $data, $postarr, $unsanitized_postarr ) {
3041          if (
3042              isset( $data['post_type'] ) &&
3043              isset( $unsanitized_postarr['post_content'] ) &&
3044              'customize_changeset' === $data['post_type'] ||
3045              (
3046                  'revision' === $data['post_type'] &&
3047                  ! empty( $data['post_parent'] ) &&
3048                  'customize_changeset' === get_post_type( $data['post_parent'] )
3049              )
3050          ) {
3051              $data['post_content'] = $unsanitized_postarr['post_content'];
3052          }
3053          return $data;
3054      }
3055  
3056      /**
3057       * Trashes or deletes a changeset post.
3058       *
3059       * The following re-formulates the logic from `wp_trash_post()` as done in
3060       * `wp_publish_post()`. The reason for bypassing `wp_trash_post()` is that it
3061       * will mutate the `post_content` and the `post_name` when they should be
3062       * untouched.
3063       *
3064       * @since 4.9.0
3065       *
3066       * @see wp_trash_post()
3067       * @global wpdb $wpdb WordPress database abstraction object.
3068       *
3069       * @param int|WP_Post $post The changeset post.
3070       * @return mixed A WP_Post object for the trashed post or an empty value on failure.
3071       */
3072  	public function trash_changeset_post( $post ) {
3073          global $wpdb;
3074  
3075          $post = get_post( $post );
3076  
3077          if ( ! ( $post instanceof WP_Post ) ) {
3078              return $post;
3079          }
3080          $post_id = $post->ID;
3081  
3082          if ( ! EMPTY_TRASH_DAYS ) {
3083              return wp_delete_post( $post_id, true );
3084          }
3085  
3086          if ( 'trash' === get_post_status( $post ) ) {
3087              return false;
3088          }
3089  
3090          $previous_status = $post->post_status;
3091  
3092          /** This filter is documented in wp-includes/post.php */
3093          $check = apply_filters( 'pre_trash_post', null, $post, $previous_status );
3094          if ( null !== $check ) {
3095              return $check;
3096          }
3097  
3098          /** This action is documented in wp-includes/post.php */
3099          do_action( 'wp_trash_post', $post_id, $previous_status );
3100  
3101          add_post_meta( $post_id, '_wp_trash_meta_status', $previous_status );
3102          add_post_meta( $post_id, '_wp_trash_meta_time', time() );
3103  
3104          $new_status = 'trash';
3105          $wpdb->update( $wpdb->posts, array( 'post_status' => $new_status ), array( 'ID' => $post->ID ) );
3106          clean_post_cache( $post->ID );
3107  
3108          $post->post_status = $new_status;
3109          wp_transition_post_status( $new_status, $previous_status, $post );
3110  
3111          /** This action is documented in wp-includes/post.php */
3112          do_action( "edit_post_{$post->post_type}", $post->ID, $post );
3113  
3114          /** This action is documented in wp-includes/post.php */
3115          do_action( 'edit_post', $post->ID, $post );
3116  
3117          /** This action is documented in wp-includes/post.php */
3118          do_action( "save_post_{$post->post_type}", $post->ID, $post, true );
3119  
3120          /** This action is documented in wp-includes/post.php */
3121          do_action( 'save_post', $post->ID, $post, true );
3122  
3123          /** This action is documented in wp-includes/post.php */
3124          do_action( 'wp_insert_post', $post->ID, $post, true );
3125  
3126          wp_after_insert_post( get_post( $post_id ), true, $post );
3127  
3128          wp_trash_post_comments( $post_id );
3129  
3130          /** This action is documented in wp-includes/post.php */
3131          do_action( 'trashed_post', $post_id, $previous_status );
3132  
3133          return $post;
3134      }
3135  
3136      /**
3137       * Handles request to trash a changeset.
3138       *
3139       * @since 4.9.0
3140       */
3141  	public function handle_changeset_trash_request() {
3142          if ( ! is_user_logged_in() ) {
3143              wp_send_json_error( 'unauthenticated' );
3144          }
3145  
3146          if ( ! $this->is_preview() ) {
3147              wp_send_json_error( 'not_preview' );
3148          }
3149  
3150          if ( ! check_ajax_referer( 'trash_customize_changeset', 'nonce', false ) ) {
3151              wp_send_json_error(
3152                  array(
3153                      'code'    => 'invalid_nonce',
3154                      'message' => __( 'There was an authentication problem. Please reload and try again.' ),
3155                  )
3156              );
3157          }
3158  
3159          $changeset_post_id = $this->changeset_post_id();
3160  
3161          if ( ! $changeset_post_id ) {
3162              wp_send_json_error(
3163                  array(
3164                      'message' => __( 'No changes saved yet, so there is nothing to trash.' ),
3165                      'code'    => 'non_existent_changeset',
3166                  )
3167              );
3168          }
3169  
3170          if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->delete_post, $changeset_post_id ) ) {
3171              wp_send_json_error(
3172                  array(
3173                      'code'    => 'changeset_trash_unauthorized',
3174                      'message' => __( 'Unable to trash changes.' ),
3175                  )
3176              );
3177          }
3178  
3179          $lock_user = (int) wp_check_post_lock( $changeset_post_id );
3180  
3181          if ( $lock_user && get_current_user_id() !== $lock_user ) {
3182              wp_send_json_error(
3183                  array(
3184                      'code'     => 'changeset_locked',
3185                      'message'  => __( 'Changeset is being edited by other user.' ),
3186                      'lockUser' => $this->get_lock_user_data( $lock_user ),
3187                  )
3188              );
3189          }
3190  
3191          if ( 'trash' === get_post_status( $changeset_post_id ) ) {
3192              wp_send_json_error(
3193                  array(
3194                      'message' => __( 'Changes have already been trashed.' ),
3195                      'code'    => 'changeset_already_trashed',
3196                  )
3197              );
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       * @return never
3391       */
3392  	public function handle_override_changeset_lock_request() {
3393          if ( ! $this->is_preview() ) {
3394              wp_send_json_error( 'not_preview', 400 );
3395          }
3396  
3397          if ( ! check_ajax_referer( 'customize_override_changeset_lock', 'nonce', false ) ) {
3398              wp_send_json_error(
3399                  array(
3400                      'code'    => 'invalid_nonce',
3401                      'message' => __( 'Security check failed.' ),
3402                  )
3403              );
3404          }
3405  
3406          $changeset_post_id = $this->changeset_post_id();
3407  
3408          if ( empty( $changeset_post_id ) ) {
3409              wp_send_json_error(
3410                  array(
3411                      'code'    => 'no_changeset_found_to_take_over',
3412                      'message' => __( 'No changeset found to take over' ),
3413                  )
3414              );
3415          }
3416  
3417          if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id ) ) {
3418              wp_send_json_error(
3419                  array(
3420                      'code'    => 'cannot_remove_changeset_lock',
3421                      'message' => __( 'Sorry, you are not allowed to take over.' ),
3422                  )
3423              );
3424          }
3425  
3426          $this->set_changeset_lock( $changeset_post_id, true );
3427  
3428          wp_send_json_success( 'changeset_taken_over' );
3429      }
3430  
3431      /**
3432       * Determines whether a changeset revision should be made.
3433       *
3434       * @since 4.7.0
3435       * @var bool
3436       */
3437      protected $store_changeset_revision;
3438  
3439      /**
3440       * Filters whether a changeset has changed to create a new revision.
3441       *
3442       * Note that this will not be called while a changeset post remains in auto-draft status.
3443       *
3444       * @since 4.7.0
3445       *
3446       * @param bool    $post_has_changed Whether the post has changed.
3447       * @param WP_Post $latest_revision  The latest revision post object.
3448       * @param WP_Post $post             The post object.
3449       * @return bool Whether a revision should be made.
3450       */
3451  	public function _filter_revision_post_has_changed( $post_has_changed, $latest_revision, $post ) {
3452          unset( $latest_revision );
3453          if ( 'customize_changeset' === $post->post_type ) {
3454              $post_has_changed = $this->store_changeset_revision;
3455          }
3456          return $post_has_changed;
3457      }
3458  
3459      /**
3460       * Publishes the values of a changeset.
3461       *
3462       * This will publish the values contained in a changeset, even changesets that do not
3463       * correspond to current manager instance. This is called by
3464       * `_wp_customize_publish_changeset()` when a customize_changeset post is
3465       * transitioned to the `publish` status. As such, this method should not be
3466       * called directly and instead `wp_publish_post()` should be used.
3467       *
3468       * Please note that if the settings in the changeset are for a non-activated
3469       * theme, the theme must first be switched to (via `switch_theme()`) before
3470       * invoking this method.
3471       *
3472       * @since 4.7.0
3473       *
3474       * @see _wp_customize_publish_changeset()
3475       * @global wpdb $wpdb WordPress database abstraction object.
3476       *
3477       * @param int $changeset_post_id ID for customize_changeset post. Defaults to the changeset for the current manager instance.
3478       * @return true|WP_Error True or error info.
3479       */
3480  	public function _publish_changeset_values( $changeset_post_id ) {
3481          global $wpdb;
3482  
3483          $publishing_changeset_data = $this->get_changeset_post_data( $changeset_post_id );
3484          if ( is_wp_error( $publishing_changeset_data ) ) {
3485              return $publishing_changeset_data;
3486          }
3487  
3488          $changeset_post = get_post( $changeset_post_id );
3489  
3490          /*
3491           * Temporarily override the changeset context so that it will be read
3492           * in calls to unsanitized_post_values() and so that it will be available
3493           * on the $wp_customize object passed to hooks during the save logic.
3494           */
3495          $previous_changeset_post_id = $this->_changeset_post_id;
3496          $this->_changeset_post_id   = $changeset_post_id;
3497          $previous_changeset_uuid    = $this->_changeset_uuid;
3498          $this->_changeset_uuid      = $changeset_post->post_name;
3499          $previous_changeset_data    = $this->_changeset_data;
3500          $this->_changeset_data      = $publishing_changeset_data;
3501  
3502          // Parse changeset data to identify theme mod settings and user IDs associated with settings to be saved.
3503          $setting_user_ids   = array();
3504          $theme_mod_settings = array();
3505          $namespace_pattern  = '/^(?P<stylesheet>.+?)::(?P<setting_id>.+)$/';
3506          $matches            = array();
3507          foreach ( $this->_changeset_data as $raw_setting_id => $setting_params ) {
3508              $actual_setting_id    = null;
3509              $is_theme_mod_setting = (
3510                  isset( $setting_params['value'] )
3511                  &&
3512                  isset( $setting_params['type'] )
3513                  &&
3514                  'theme_mod' === $setting_params['type']
3515                  &&
3516                  preg_match( $namespace_pattern, $raw_setting_id, $matches )
3517              );
3518              if ( $is_theme_mod_setting ) {
3519                  if ( ! isset( $theme_mod_settings[ $matches['stylesheet'] ] ) ) {
3520                      $theme_mod_settings[ $matches['stylesheet'] ] = array();
3521                  }
3522                  $theme_mod_settings[ $matches['stylesheet'] ][ $matches['setting_id'] ] = $setting_params;
3523  
3524                  if ( $this->get_stylesheet() === $matches['stylesheet'] ) {
3525                      $actual_setting_id = $matches['setting_id'];
3526                  }
3527              } else {
3528                  $actual_setting_id = $raw_setting_id;
3529              }
3530  
3531              // Keep track of the user IDs for settings actually for this theme.
3532              if ( $actual_setting_id && isset( $setting_params['user_id'] ) ) {
3533                  $setting_user_ids[ $actual_setting_id ] = $setting_params['user_id'];
3534              }
3535          }
3536  
3537          $changeset_setting_values = $this->unsanitized_post_values(
3538              array(
3539                  'exclude_post_data' => true,
3540                  'exclude_changeset' => false,
3541              )
3542          );
3543          $changeset_setting_ids    = array_keys( $changeset_setting_values );
3544          $this->add_dynamic_settings( $changeset_setting_ids );
3545  
3546          /**
3547           * Fires once the theme has switched in the Customizer, but before settings
3548           * have been saved.
3549           *
3550           * @since 3.4.0
3551           *
3552           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
3553           */
3554          do_action( 'customize_save', $this );
3555  
3556          /*
3557           * Ensure that all settings will allow themselves to be saved. Note that
3558           * this is safe because the setting would have checked the capability
3559           * when the setting value was written into the changeset. So this is why
3560           * an additional capability check is not required here.
3561           */
3562          $original_setting_capabilities = array();
3563          foreach ( $changeset_setting_ids as $setting_id ) {
3564              $setting = $this->get_setting( $setting_id );
3565              if ( $setting && ! isset( $setting_user_ids[ $setting_id ] ) ) {
3566                  $original_setting_capabilities[ $setting->id ] = $setting->capability;
3567                  $setting->capability                           = 'exist';
3568              }
3569          }
3570  
3571          $original_user_id = get_current_user_id();
3572          foreach ( $changeset_setting_ids as $setting_id ) {
3573              $setting = $this->get_setting( $setting_id );
3574              if ( $setting ) {
3575                  /*
3576                   * Set the current user to match the user who saved the value into
3577                   * the changeset so that any filters that apply during the save
3578                   * process will respect the original user's capabilities. This
3579                   * will ensure, for example, that KSES won't strip unsafe HTML
3580                   * when a scheduled changeset publishes via WP Cron.
3581                   */
3582                  if ( isset( $setting_user_ids[ $setting_id ] ) ) {
3583                      wp_set_current_user( $setting_user_ids[ $setting_id ] );
3584                  } else {
3585                      wp_set_current_user( $original_user_id );
3586                  }
3587  
3588                  $setting->save();
3589              }
3590          }
3591          wp_set_current_user( $original_user_id );
3592  
3593          // Update the stashed theme mod settings, removing the active theme's stashed settings, if activated.
3594          if ( did_action( 'switch_theme' ) ) {
3595              $other_theme_mod_settings = $theme_mod_settings;
3596              unset( $other_theme_mod_settings[ $this->get_stylesheet() ] );
3597              $this->update_stashed_theme_mod_settings( $other_theme_mod_settings );
3598          }
3599  
3600          /**
3601           * Fires after Customize settings have been saved.
3602           *
3603           * @since 3.6.0
3604           *
3605           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
3606           */
3607          do_action( 'customize_save_after', $this );
3608  
3609          // Restore original capabilities.
3610          foreach ( $original_setting_capabilities as $setting_id => $capability ) {
3611              $setting = $this->get_setting( $setting_id );
3612              if ( $setting ) {
3613                  $setting->capability = $capability;
3614              }
3615          }
3616  
3617          // Restore original changeset data.
3618          $this->_changeset_data    = $previous_changeset_data;
3619          $this->_changeset_post_id = $previous_changeset_post_id;
3620          $this->_changeset_uuid    = $previous_changeset_uuid;
3621  
3622          /*
3623           * Convert all autosave revisions into their own auto-drafts so that users can be prompted to
3624           * restore them when a changeset is published, but they had been locked out from including
3625           * their changes in the changeset.
3626           */
3627          $revisions = wp_get_post_revisions( $changeset_post_id, array( 'check_enabled' => false ) );
3628          foreach ( $revisions as $revision ) {
3629              if ( str_contains( $revision->post_name, "{$changeset_post_id}-autosave" ) ) {
3630                  $wpdb->update(
3631                      $wpdb->posts,
3632                      array(
3633                          'post_status' => 'auto-draft',
3634                          'post_type'   => 'customize_changeset',
3635                          'post_name'   => wp_generate_uuid4(),
3636                          'post_parent' => 0,
3637                      ),
3638                      array(
3639                          'ID' => $revision->ID,
3640                      )
3641                  );
3642                  clean_post_cache( $revision->ID );
3643              }
3644          }
3645  
3646          return true;
3647      }
3648  
3649      /**
3650       * Updates stashed theme mod settings.
3651       *
3652       * @since 4.7.0
3653       *
3654       * @param array $inactive_theme_mod_settings Mapping of stylesheet to arrays of theme mod settings.
3655       * @return array|false Returns array of updated stashed theme mods or false if the update failed or there were no changes.
3656       */
3657  	protected function update_stashed_theme_mod_settings( $inactive_theme_mod_settings ) {
3658          $stashed_theme_mod_settings = get_option( 'customize_stashed_theme_mods' );
3659          if ( empty( $stashed_theme_mod_settings ) ) {
3660              $stashed_theme_mod_settings = array();
3661          }
3662  
3663          // Delete any stashed theme mods for the active theme since they would have been loaded and saved upon activation.
3664          unset( $stashed_theme_mod_settings[ $this->get_stylesheet() ] );
3665  
3666          // Merge inactive theme mods with the stashed theme mod settings.
3667          foreach ( $inactive_theme_mod_settings as $stylesheet => $theme_mod_settings ) {
3668              if ( ! isset( $stashed_theme_mod_settings[ $stylesheet ] ) ) {
3669                  $stashed_theme_mod_settings[ $stylesheet ] = array();
3670              }
3671  
3672              $stashed_theme_mod_settings[ $stylesheet ] = array_merge(
3673                  $stashed_theme_mod_settings[ $stylesheet ],
3674                  $theme_mod_settings
3675              );
3676          }
3677  
3678          $autoload = false;
3679          $result   = update_option( 'customize_stashed_theme_mods', $stashed_theme_mod_settings, $autoload );
3680          if ( ! $result ) {
3681              return false;
3682          }
3683          return $stashed_theme_mod_settings;
3684      }
3685  
3686      /**
3687       * Refreshes nonces for the current preview.
3688       *
3689       * @since 4.2.0
3690       *
3691       * @return never
3692       */
3693  	public function refresh_nonces() {
3694          if ( ! $this->is_preview() ) {
3695              wp_send_json_error( 'not_preview' );
3696          }
3697  
3698          wp_send_json_success( $this->get_nonces() );
3699      }
3700  
3701      /**
3702       * Deletes a given auto-draft changeset or the autosave revision for a given changeset or delete changeset lock.
3703       *
3704       * @since 4.9.0
3705       *
3706       * @return never
3707       */
3708  	public function handle_dismiss_autosave_or_lock_request() {
3709          // Calls to dismiss_user_auto_draft_changesets() and wp_get_post_autosave() require non-zero get_current_user_id().
3710          if ( ! is_user_logged_in() ) {
3711              wp_send_json_error( 'unauthenticated', 401 );
3712          }
3713  
3714          if ( ! $this->is_preview() ) {
3715              wp_send_json_error( 'not_preview', 400 );
3716          }
3717  
3718          if ( ! check_ajax_referer( 'customize_dismiss_autosave_or_lock', 'nonce', false ) ) {
3719              wp_send_json_error( 'invalid_nonce', 403 );
3720          }
3721  
3722          $changeset_post_id = $this->changeset_post_id();
3723          $dismiss_lock      = ! empty( $_POST['dismiss_lock'] );
3724          $dismiss_autosave  = ! empty( $_POST['dismiss_autosave'] );
3725  
3726          if ( $dismiss_lock ) {
3727              if ( empty( $changeset_post_id ) && ! $dismiss_autosave ) {
3728                  wp_send_json_error( 'no_changeset_to_dismiss_lock', 404 );
3729              }
3730              if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id ) && ! $dismiss_autosave ) {
3731                  wp_send_json_error( 'cannot_remove_changeset_lock', 403 );
3732              }
3733  
3734              delete_post_meta( $changeset_post_id, '_edit_lock' );
3735  
3736              if ( ! $dismiss_autosave ) {
3737                  wp_send_json_success( 'changeset_lock_dismissed' );
3738              }
3739          }
3740  
3741          if ( $dismiss_autosave ) {
3742              if ( empty( $changeset_post_id ) || 'auto-draft' === get_post_status( $changeset_post_id ) ) {
3743                  $dismissed = $this->dismiss_user_auto_draft_changesets();
3744                  if ( $dismissed > 0 ) {
3745                      wp_send_json_success( 'auto_draft_dismissed' );
3746                  } else {
3747                      wp_send_json_error( 'no_auto_draft_to_delete', 404 );
3748                  }
3749              } else {
3750                  $revision = wp_get_post_autosave( $changeset_post_id, get_current_user_id() );
3751  
3752                  if ( $revision ) {
3753                      if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->delete_post, $changeset_post_id ) ) {
3754                          wp_send_json_error( 'cannot_delete_autosave_revision', 403 );
3755                      }
3756  
3757                      if ( ! wp_delete_post( $revision->ID, true ) ) {
3758                          wp_send_json_error( 'autosave_revision_deletion_failure', 500 );
3759                      } else {
3760                          wp_send_json_success( 'autosave_revision_deleted' );
3761                      }
3762                  } else {
3763                      wp_send_json_error( 'no_autosave_revision_to_delete', 404 );
3764                  }
3765              }
3766          }
3767  
3768          wp_send_json_error( 'unknown_error', 500 );
3769      }
3770  
3771      /**
3772       * Adds a customize setting.
3773       *
3774       * @since 3.4.0
3775       * @since 4.5.0 Return added WP_Customize_Setting instance.
3776       *
3777       * @see WP_Customize_Setting::__construct()
3778       * @link https://developer.wordpress.org/themes/customize-api
3779       *
3780       * @param WP_Customize_Setting|string $id   Customize Setting object, or ID.
3781       * @param array                       $args Optional. Array of properties for the new Setting object.
3782       *                                          See WP_Customize_Setting::__construct() for information
3783       *                                          on accepted arguments. Default empty array.
3784       * @return WP_Customize_Setting The instance of the setting that was added.
3785       */
3786  	public function add_setting( $id, $args = array() ) {
3787          if ( $id instanceof WP_Customize_Setting ) {
3788              $setting = $id;
3789          } else {
3790              $class = 'WP_Customize_Setting';
3791  
3792              /** This filter is documented in wp-includes/class-wp-customize-manager.php */
3793              $args = apply_filters( 'customize_dynamic_setting_args', $args, $id );
3794  
3795              /** This filter is documented in wp-includes/class-wp-customize-manager.php */
3796              $class = apply_filters( 'customize_dynamic_setting_class', $class, $id, $args );
3797  
3798              $setting = new $class( $this, $id, $args );
3799          }
3800  
3801          $this->settings[ $setting->id ] = $setting;
3802          return $setting;
3803      }
3804  
3805      /**
3806       * Registers any dynamically-created settings, such as those from $_POST['customized']
3807       * that have no corresponding setting created.
3808       *
3809       * This is a mechanism to "wake up" settings that have been dynamically created
3810       * on the front end and have been sent to WordPress in `$_POST['customized']`. When WP
3811       * loads, the dynamically-created settings then will get created and previewed
3812       * even though they are not directly created statically with code.
3813       *
3814       * @since 4.2.0
3815       *
3816       * @param array $setting_ids The setting IDs to add.
3817       * @return array The WP_Customize_Setting objects added.
3818       */
3819  	public function add_dynamic_settings( $setting_ids ) {
3820          $new_settings = array();
3821          foreach ( $setting_ids as $setting_id ) {
3822              // Skip settings already created.
3823              if ( $this->get_setting( $setting_id ) ) {
3824                  continue;
3825              }
3826  
3827              $setting_args  = false;
3828              $setting_class = 'WP_Customize_Setting';
3829  
3830              /**
3831               * Filters a dynamic setting's constructor args.
3832               *
3833               * For a dynamic setting to be registered, this filter must be employed
3834               * to override the default false value with an array of args to pass to
3835               * the WP_Customize_Setting constructor.
3836               *
3837               * @since 4.2.0
3838               *
3839               * @param false|array $setting_args The arguments to the WP_Customize_Setting constructor.
3840               * @param string      $setting_id   ID for dynamic setting, usually coming from `$_POST['customized']`.
3841               */
3842              $setting_args = apply_filters( 'customize_dynamic_setting_args', $setting_args, $setting_id );
3843              if ( false === $setting_args ) {
3844                  continue;
3845              }
3846  
3847              /**
3848               * Allow non-statically created settings to be constructed with custom WP_Customize_Setting subclass.
3849               *
3850               * @since 4.2.0
3851               *
3852               * @param string $setting_class WP_Customize_Setting or a subclass.
3853               * @param string $setting_id    ID for dynamic setting, usually coming from `$_POST['customized']`.
3854               * @param array  $setting_args  WP_Customize_Setting or a subclass.
3855               */
3856              $setting_class = apply_filters( 'customize_dynamic_setting_class', $setting_class, $setting_id, $setting_args );
3857  
3858              $setting = new $setting_class( $this, $setting_id, $setting_args );
3859  
3860              $this->add_setting( $setting );
3861              $new_settings[] = $setting;
3862          }
3863          return $new_settings;
3864      }
3865  
3866      /**
3867       * Retrieves a customize setting.
3868       *
3869       * @since 3.4.0
3870       *
3871       * @param string $id Customize Setting ID.
3872       * @return WP_Customize_Setting|null The setting, if set.
3873       */
3874  	public function get_setting( $id ) {
3875          if ( isset( $this->settings[ $id ] ) ) {
3876              return $this->settings[ $id ];
3877          }
3878      }
3879  
3880      /**
3881       * Removes a customize setting.
3882       *
3883       * Note that removing the setting doesn't destroy the WP_Customize_Setting instance or remove its filters.
3884       *
3885       * @since 3.4.0
3886       *
3887       * @param string $id Customize Setting ID.
3888       */
3889  	public function remove_setting( $id ) {
3890          unset( $this->settings[ $id ] );
3891      }
3892  
3893      /**
3894       * Adds a customize panel.
3895       *
3896       * @since 4.0.0
3897       * @since 4.5.0 Return added WP_Customize_Panel instance.
3898       *
3899       * @see WP_Customize_Panel::__construct()
3900       *
3901       * @param WP_Customize_Panel|string $id   Customize Panel object, or ID.
3902       * @param array                     $args Optional. Array of properties for the new Panel object.
3903       *                                        See WP_Customize_Panel::__construct() for information
3904       *                                        on accepted arguments. Default empty array.
3905       * @return WP_Customize_Panel The instance of the panel that was added.
3906       */
3907  	public function add_panel( $id, $args = array() ) {
3908          if ( $id instanceof WP_Customize_Panel ) {
3909              $panel = $id;
3910          } else {
3911              $panel = new WP_Customize_Panel( $this, $id, $args );
3912          }
3913  
3914          $this->panels[ $panel->id ] = $panel;
3915          return $panel;
3916      }
3917  
3918      /**
3919       * Retrieves a customize panel.
3920       *
3921       * @since 4.0.0
3922       *
3923       * @param string $id Panel ID to get.
3924       * @return WP_Customize_Panel|null Requested panel instance, if set.
3925       */
3926  	public function get_panel( $id ) {
3927          if ( isset( $this->panels[ $id ] ) ) {
3928              return $this->panels[ $id ];
3929          }
3930      }
3931  
3932      /**
3933       * Removes a customize panel.
3934       *
3935       * Note that removing the panel doesn't destroy the WP_Customize_Panel instance or remove its filters.
3936       *
3937       * @since 4.0.0
3938       *
3939       * @param string $id Panel ID to remove.
3940       */
3941  	public function remove_panel( $id ) {
3942          // Removing core components this way is _doing_it_wrong().
3943          if ( in_array( $id, $this->components, true ) ) {
3944              _doing_it_wrong(
3945                  __METHOD__,
3946                  sprintf(
3947                      /* translators: 1: Panel ID, 2: Link to 'customize_loaded_components' filter reference. */
3948                      __( 'Removing %1$s manually will cause PHP warnings. Use the %2$s filter instead.' ),
3949                      $id,
3950                      sprintf(
3951                          '<a href="%1$s">%2$s</a>',
3952                          esc_url( 'https://developer.wordpress.org/reference/hooks/customize_loaded_components/' ),
3953                          '<code>customize_loaded_components</code>'
3954                      )
3955                  ),
3956                  '4.5.0'
3957              );
3958          }
3959          unset( $this->panels[ $id ] );
3960      }
3961  
3962      /**
3963       * Registers a customize panel type.
3964       *
3965       * Registered types are eligible to be rendered via JS and created dynamically.
3966       *
3967       * @since 4.3.0
3968       *
3969       * @see WP_Customize_Panel
3970       *
3971       * @param string $panel Name of a custom panel which is a subclass of WP_Customize_Panel.
3972       */
3973  	public function register_panel_type( $panel ) {
3974          $this->registered_panel_types[] = $panel;
3975      }
3976  
3977      /**
3978       * Renders JS templates for all registered panel types.
3979       *
3980       * @since 4.3.0
3981       */
3982  	public function render_panel_templates() {
3983          foreach ( $this->registered_panel_types as $panel_type ) {
3984              $panel = new $panel_type( $this, 'temp', array() );
3985              $panel->print_template();
3986          }
3987      }
3988  
3989      /**
3990       * Adds a customize section.
3991       *
3992       * @since 3.4.0
3993       * @since 4.5.0 Return added WP_Customize_Section instance.
3994       *
3995       * @see WP_Customize_Section::__construct()
3996       *
3997       * @param WP_Customize_Section|string $id   Customize Section object, or ID.
3998       * @param array                       $args Optional. Array of properties for the new Section object.
3999       *                                          See WP_Customize_Section::__construct() for information
4000       *                                          on accepted arguments. Default empty array.
4001       * @return WP_Customize_Section The instance of the section that was added.
4002       */
4003  	public function add_section( $id, $args = array() ) {
4004          if ( $id instanceof WP_Customize_Section ) {
4005              $section = $id;
4006          } else {
4007              $section = new WP_Customize_Section( $this, $id, $args );
4008          }
4009  
4010          $this->sections[ $section->id ] = $section;
4011          return $section;
4012      }
4013  
4014      /**
4015       * Retrieves a customize section.
4016       *
4017       * @since 3.4.0
4018       *
4019       * @param string $id Section ID.
4020       * @return WP_Customize_Section|null The section, if set.
4021       */
4022  	public function get_section( $id ) {
4023          if ( isset( $this->sections[ $id ] ) ) {
4024              return $this->sections[ $id ];
4025          }
4026      }
4027  
4028      /**
4029       * Removes a customize section.
4030       *
4031       * Note that removing the section doesn't destroy the WP_Customize_Section instance or remove its filters.
4032       *
4033       * @since 3.4.0
4034       *
4035       * @param string $id Section ID.
4036       */
4037  	public function remove_section( $id ) {
4038          unset( $this->sections[ $id ] );
4039      }
4040  
4041      /**
4042       * Registers a customize section type.
4043       *
4044       * Registered types are eligible to be rendered via JS and created dynamically.
4045       *
4046       * @since 4.3.0
4047       *
4048       * @see WP_Customize_Section
4049       *
4050       * @param string $section Name of a custom section which is a subclass of WP_Customize_Section.
4051       */
4052  	public function register_section_type( $section ) {
4053          $this->registered_section_types[] = $section;
4054      }
4055  
4056      /**
4057       * Renders JS templates for all registered section types.
4058       *
4059       * @since 4.3.0
4060       */
4061  	public function render_section_templates() {
4062          foreach ( $this->registered_section_types as $section_type ) {
4063              $section = new $section_type( $this, 'temp', array() );
4064              $section->print_template();
4065          }
4066      }
4067  
4068      /**
4069       * Adds a customize control.
4070       *
4071       * @since 3.4.0
4072       * @since 4.5.0 Return added WP_Customize_Control instance.
4073       *
4074       * @see WP_Customize_Control::__construct()
4075       *
4076       * @param WP_Customize_Control|string $id   Customize Control object, or ID.
4077       * @param array                       $args Optional. Array of properties for the new Control object.
4078       *                                          See WP_Customize_Control::__construct() for information
4079       *                                          on accepted arguments. Default empty array.
4080       * @return WP_Customize_Control The instance of the control that was added.
4081       */
4082  	public function add_control( $id, $args = array() ) {
4083          if ( $id instanceof WP_Customize_Control ) {
4084              $control = $id;
4085          } else {
4086              $control = new WP_Customize_Control( $this, $id, $args );
4087          }
4088  
4089          $this->controls[ $control->id ] = $control;
4090          return $control;
4091      }
4092  
4093      /**
4094       * Retrieves a customize control.
4095       *
4096       * @since 3.4.0
4097       *
4098       * @param string $id ID of the control.
4099       * @return WP_Customize_Control|null The control object, if set.
4100       */
4101  	public function get_control( $id ) {
4102          if ( isset( $this->controls[ $id ] ) ) {
4103              return $this->controls[ $id ];
4104          }
4105      }
4106  
4107      /**
4108       * Removes a customize control.
4109       *
4110       * Note that removing the control doesn't destroy the WP_Customize_Control instance or remove its filters.
4111       *
4112       * @since 3.4.0
4113       *
4114       * @param string $id ID of the control.
4115       */
4116  	public function remove_control( $id ) {
4117          unset( $this->controls[ $id ] );
4118      }
4119  
4120      /**
4121       * Registers a customize control type.
4122       *
4123       * Registered types are eligible to be rendered via JS and created dynamically.
4124       *
4125       * @since 4.1.0
4126       *
4127       * @param string $control Name of a custom control which is a subclass of
4128       *                        WP_Customize_Control.
4129       */
4130  	public function register_control_type( $control ) {
4131          $this->registered_control_types[] = $control;
4132      }
4133  
4134      /**
4135       * Renders JS templates for all registered control types.
4136       *
4137       * @since 4.1.0
4138       */
4139  	public function render_control_templates() {
4140          if ( $this->branching() ) {
4141              $l10n = array(
4142                  /* translators: %s: User who is customizing the changeset in customizer. */
4143                  'locked'                => __( '%s is already customizing this changeset. Please wait until they are done to try customizing. Your latest changes have been autosaved.' ),
4144                  /* translators: %s: User who is customizing the changeset in customizer. */
4145                  'locked_allow_override' => __( '%s is already customizing this changeset. Do you want to take over?' ),
4146              );
4147          } else {
4148              $l10n = array(
4149                  /* translators: %s: User who is customizing the changeset in customizer. */
4150                  'locked'                => __( '%s is already customizing this site. Please wait until they are done to try customizing. Your latest changes have been autosaved.' ),
4151                  /* translators: %s: User who is customizing the changeset in customizer. */
4152                  'locked_allow_override' => __( '%s is already customizing this site. Do you want to take over?' ),
4153              );
4154          }
4155  
4156          foreach ( $this->registered_control_types as $control_type ) {
4157              $control = new $control_type(
4158                  $this,
4159                  'temp',
4160                  array(
4161                      'settings' => array(),
4162                  )
4163              );
4164              $control->print_template();
4165          }
4166          ?>
4167  
4168          <script type="text/html" id="tmpl-customize-control-default-content">
4169              <#
4170              var inputId = _.uniqueId( 'customize-control-default-input-' );
4171              var descriptionId = _.uniqueId( 'customize-control-default-description-' );
4172              var describedByAttr = data.description ? ' aria-describedby="' + descriptionId + '" ' : '';
4173              #>
4174              <# switch ( data.type ) {
4175                  case 'checkbox': #>
4176                      <span class="customize-inside-control-row">
4177                          <input
4178                              id="{{ inputId }}"
4179                              {{{ describedByAttr }}}
4180                              type="checkbox"
4181                              value="{{ data.value }}"
4182                              data-customize-setting-key-link="default"
4183                          >
4184                          <label for="{{ inputId }}">
4185                              {{ data.label }}
4186                          </label>
4187                          <# if ( data.description ) { #>
4188                              <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
4189                          <# } #>
4190                      </span>
4191                      <#
4192                      break;
4193                  case 'radio':
4194                      if ( ! data.choices ) {
4195                          return;
4196                      }
4197                      #>
4198                      <# if ( data.label ) { #>
4199                          <label for="{{ inputId }}" class="customize-control-title">
4200                              {{ data.label }}
4201                          </label>
4202                      <# } #>
4203                      <# if ( data.description ) { #>
4204                          <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
4205                      <# } #>
4206                      <# _.each( data.choices, function( val, key ) { #>
4207                          <span class="customize-inside-control-row">
4208                              <#
4209                              var value, text;
4210                              if ( _.isObject( val ) ) {
4211                                  value = val.value;
4212                                  text = val.text;
4213                              } else {
4214                                  value = key;
4215                                  text = val;
4216                              }
4217                              #>
4218                              <input
4219                                  id="{{ inputId + '-' + value }}"
4220                                  type="radio"
4221                                  value="{{ value }}"
4222                                  name="{{ inputId }}"
4223                                  data-customize-setting-key-link="default"
4224                                  {{{ describedByAttr }}}
4225                              >
4226                              <label for="{{ inputId + '-' + value }}">{{ text }}</label>
4227                          </span>
4228                      <# } ); #>
4229                      <#
4230                      break;
4231                  default:
4232                      #>
4233                      <# if ( data.label ) { #>
4234                          <label for="{{ inputId }}" class="customize-control-title">
4235                              {{ data.label }}
4236                          </label>
4237                      <# } #>
4238                      <# if ( data.description ) { #>
4239                          <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
4240                      <# } #>
4241  
4242                      <#
4243                      var inputAttrs = {
4244                          id: inputId,
4245                          'data-customize-setting-key-link': 'default'
4246                      };
4247                      if ( 'textarea' === data.type ) {
4248                          inputAttrs.rows = '5';
4249                      } else if ( 'button' === data.type ) {
4250                          inputAttrs['class'] = 'button button-secondary';
4251                          inputAttrs.type = 'button';
4252                      } else {
4253                          inputAttrs.type = data.type;
4254                      }
4255                      if ( data.description ) {
4256                          inputAttrs['aria-describedby'] = descriptionId;
4257                      }
4258                      _.extend( inputAttrs, data.input_attrs );
4259                      #>
4260  
4261                      <# if ( 'button' === data.type ) { #>
4262                          <button
4263                              <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
4264                                  {{{ key }}}="{{ value }}"
4265                              <# } ); #>
4266                          >{{ inputAttrs.value }}</button>
4267                      <# } else if ( 'textarea' === data.type ) { #>
4268                          <textarea
4269                              <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
4270                                  {{{ key }}}="{{ value }}"
4271                              <# }); #>
4272                          >{{ inputAttrs.value }}</textarea>
4273                      <# } else if ( 'select' === data.type ) { #>
4274                          <# delete inputAttrs.type; #>
4275                          <select
4276                              <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
4277                                  {{{ key }}}="{{ value }}"
4278                              <# }); #>
4279                              >
4280                              <# _.each( data.choices, function( val, key ) { #>
4281                                  <#
4282                                  var value, text;
4283                                  if ( _.isObject( val ) ) {
4284                                      value = val.value;
4285                                      text = val.text;
4286                                  } else {
4287                                      value = key;
4288                                      text = val;
4289                                  }
4290                                  #>
4291                                  <option value="{{ value }}">{{ text }}</option>
4292                              <# } ); #>
4293                          </select>
4294                      <# } else { #>
4295                          <input
4296                              <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
4297                                  {{{ key }}}="{{ value }}"
4298                              <# }); #>
4299                              >
4300                      <# } #>
4301              <# } #>
4302          </script>
4303  
4304          <script type="text/html" id="tmpl-customize-notification">
4305              <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 }}">
4306                  <div class="notification-message">{{{ data.message || data.code }}}</div>
4307                  <# if ( data.dismissible ) { #>
4308                      <button type="button" class="notice-dismiss"><span class="screen-reader-text">
4309                          <?php
4310                          /* translators: Hidden accessibility text. */
4311                          _e( 'Dismiss' );
4312                          ?>
4313                      </span></button>
4314                  <# } #>
4315              </li>
4316          </script>
4317  
4318          <script type="text/html" id="tmpl-customize-changeset-locked-notification">
4319              <li class="notice notice-{{ data.type || 'info' }} {{ data.containerClasses || '' }}" data-code="{{ data.code }}" data-type="{{ data.type }}">
4320                  <div class="notification-message customize-changeset-locked-message {{ data.lockUser.avatar ? 'has-avatar' : '' }}">
4321                      <# if ( data.lockUser.avatar ) { #>
4322                          <img class="customize-changeset-locked-avatar" src="{{ data.lockUser.avatar }}" alt="{{ data.lockUser.name }}" />
4323                      <# } #>
4324                      <p class="currently-editing">
4325                          <# if ( data.message ) { #>
4326                              {{{ data.message }}}
4327                          <# } else if ( data.allowOverride ) { #>
4328                              <?php
4329                              echo esc_html( sprintf( $l10n['locked_allow_override'], '{{ data.lockUser.name }}' ) );
4330                              ?>
4331                          <# } else { #>
4332                              <?php
4333                              echo esc_html( sprintf( $l10n['locked'], '{{ data.lockUser.name }}' ) );
4334                              ?>
4335                          <# } #>
4336                      </p>
4337                      <p class="notice notice-error notice-alt" hidden></p>
4338                      <p class="action-buttons">
4339                          <# if ( data.returnUrl !== data.previewUrl ) { #>
4340                              <a class="button customize-notice-go-back-button" href="{{ data.returnUrl }}"><?php _e( 'Go back' ); ?></a>
4341                          <# } #>
4342                          <a class="button customize-notice-preview-button" href="{{ data.frontendPreviewUrl }}"><?php echo esc_html_x( 'Preview', 'verb' ); ?></a>
4343                          <# if ( data.allowOverride ) { #>
4344                              <button class="button button-primary wp-tab-last customize-notice-take-over-button"><?php _e( 'Take over' ); ?></button>
4345                          <# } #>
4346                      </p>
4347                  </div>
4348              </li>
4349          </script>
4350  
4351          <script type="text/html" id="tmpl-customize-code-editor-lint-error-notification">
4352              <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 }}">
4353                  <div class="notification-message">{{{ data.message || data.code }}}</div>
4354  
4355                  <p>
4356                      <# var elementId = 'el-' + String( Math.random() ); #>
4357                      <input id="{{ elementId }}" type="checkbox">
4358                      <label for="{{ elementId }}"><?php _e( 'Update anyway, even though it might break your site?' ); ?></label>
4359                  </p>
4360              </li>
4361          </script>
4362  
4363          <?php
4364          /* The following template is obsolete in core but retained for plugins. */
4365          ?>
4366          <script type="text/html" id="tmpl-customize-control-notifications">
4367              <ul>
4368                  <# _.each( data.notifications, function( notification ) { #>
4369                      <li class="notice notice-{{ notification.type || 'info' }} {{ data.altNotice ? 'notice-alt' : '' }}" data-code="{{ notification.code }}" data-type="{{ notification.type }}">{{{ notification.message || notification.code }}}</li>
4370                  <# } ); #>
4371              </ul>
4372          </script>
4373  
4374          <script type="text/html" id="tmpl-customize-preview-link-control" >
4375              <# var elementPrefix = _.uniqueId( 'el' ) + '-' #>
4376              <p class="customize-control-title">
4377                  <?php esc_html_e( 'Share Preview Link' ); ?>
4378              </p>
4379              <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>
4380              <div class="customize-control-notifications-container"></div>
4381              <div class="preview-link-wrapper">
4382                  <label for="{{ elementPrefix }}customize-preview-link-input" class="screen-reader-text">
4383                      <?php
4384                      /* translators: Hidden accessibility text. */
4385                      esc_html_e( 'Preview Link' );
4386                      ?>
4387                  </label>
4388                  <a href="" target="">
4389                      <span class="preview-control-element" data-component="url"></span>
4390                      <span class="screen-reader-text">
4391                          <?php
4392                          /* translators: Hidden accessibility text. */
4393                          _e( '(opens in a new tab)' );
4394                          ?>
4395                      </span>
4396                  </a>
4397                  <input id="{{ elementPrefix }}customize-preview-link-input" readonly tabindex="-1" class="preview-control-element" data-component="input">
4398                  <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>
4399              </div>
4400          </script>
4401          <script type="text/html" id="tmpl-customize-selected-changeset-status-control">
4402              <# var inputId = _.uniqueId( 'customize-selected-changeset-status-control-input-' ); #>
4403              <# var descriptionId = _.uniqueId( 'customize-selected-changeset-status-control-description-' ); #>
4404              <# if ( data.label ) { #>
4405                  <label for="{{ inputId }}" class="customize-control-title">{{ data.label }}</label>
4406              <# } #>
4407              <# if ( data.description ) { #>
4408                  <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
4409              <# } #>
4410              <# _.each( data.choices, function( choice ) { #>
4411                  <# var choiceId = inputId + '-' + choice.status; #>
4412                  <span class="customize-inside-control-row">
4413                      <input id="{{ choiceId }}" type="radio" value="{{ choice.status }}" name="{{ inputId }}" data-customize-setting-key-link="default">
4414                      <label for="{{ choiceId }}">{{ choice.label }}</label>
4415                  </span>
4416              <# } ); #>
4417          </script>
4418          <?php
4419      }
4420  
4421      /**
4422       * Helper function to compare two objects by priority, ensuring sort stability via instance_number.
4423       *
4424       * @since 3.4.0
4425       * @deprecated 4.7.0 Use wp_list_sort()
4426       *
4427       * @param WP_Customize_Panel|WP_Customize_Section|WP_Customize_Control $a Object A.
4428       * @param WP_Customize_Panel|WP_Customize_Section|WP_Customize_Control $b Object B.
4429       * @return int
4430       */
4431  	protected function _cmp_priority( $a, $b ) {
4432          _deprecated_function( __METHOD__, '4.7.0', 'wp_list_sort' );
4433  
4434          if ( $a->priority === $b->priority ) {
4435              return $a->instance_number - $b->instance_number;
4436          } else {
4437              return $a->priority - $b->priority;
4438          }
4439      }
4440  
4441      /**
4442       * Prepares panels, sections, and controls.
4443       *
4444       * For each, check if required related components exist,
4445       * whether the user has the necessary capabilities,
4446       * and sort by priority.
4447       *
4448       * @since 3.4.0
4449       */
4450  	public function prepare_controls() {
4451  
4452          $controls       = array();
4453          $this->controls = wp_list_sort(
4454              $this->controls,
4455              array(
4456                  'priority'        => 'ASC',
4457                  'instance_number' => 'ASC',
4458              ),
4459              'ASC',
4460              true
4461          );
4462  
4463          foreach ( $this->controls as $id => $control ) {
4464              if ( ! isset( $this->sections[ $control->section ] ) || ! $control->check_capabilities() ) {
4465                  continue;
4466              }
4467  
4468              $this->sections[ $control->section ]->controls[] = $control;
4469              $controls[ $id ]                                 = $control;
4470          }
4471          $this->controls = $controls;
4472  
4473          // Prepare sections.
4474          $this->sections = wp_list_sort(
4475              $this->sections,
4476              array(
4477                  'priority'        => 'ASC',
4478                  'instance_number' => 'ASC',
4479              ),
4480              'ASC',
4481              true
4482          );
4483          $sections       = array();
4484  
4485          foreach ( $this->sections as $section ) {
4486              if ( ! $section->check_capabilities() ) {
4487                  continue;
4488              }
4489  
4490              $section->controls = wp_list_sort(
4491                  $section->controls,
4492                  array(
4493                      'priority'        => 'ASC',
4494                      'instance_number' => 'ASC',
4495                  )
4496              );
4497  
4498              if ( ! $section->panel ) {
4499                  // Top-level section.
4500                  $sections[ $section->id ] = $section;
4501              } else {
4502                  // This section belongs to a panel.
4503                  if ( isset( $this->panels [ $section->panel ] ) ) {
4504                      $this->panels[ $section->panel ]->sections[ $section->id ] = $section;
4505                  }
4506              }
4507          }
4508          $this->sections = $sections;
4509  
4510          // Prepare panels.
4511          $this->panels = wp_list_sort(
4512              $this->panels,
4513              array(
4514                  'priority'        => 'ASC',
4515                  'instance_number' => 'ASC',
4516              ),
4517              'ASC',
4518              true
4519          );
4520          $panels       = array();
4521  
4522          foreach ( $this->panels as $panel ) {
4523              if ( ! $panel->check_capabilities() ) {
4524                  continue;
4525              }
4526  
4527              $panel->sections      = wp_list_sort(
4528                  $panel->sections,
4529                  array(
4530                      'priority'        => 'ASC',
4531                      'instance_number' => 'ASC',
4532                  ),
4533                  'ASC',
4534                  true
4535              );
4536              $panels[ $panel->id ] = $panel;
4537          }
4538          $this->panels = $panels;
4539  
4540          // Sort panels and top-level sections together.
4541          $this->containers = array_merge( $this->panels, $this->sections );
4542          $this->containers = wp_list_sort(
4543              $this->containers,
4544              array(
4545                  'priority'        => 'ASC',
4546                  'instance_number' => 'ASC',
4547              ),
4548              'ASC',
4549              true
4550          );
4551      }
4552  
4553      /**
4554       * Enqueues scripts for customize controls.
4555       *
4556       * @since 3.4.0
4557       */
4558  	public function enqueue_control_scripts() {
4559          foreach ( $this->controls as $control ) {
4560              $control->enqueue();
4561          }
4562  
4563          if ( ! is_multisite() && ( current_user_can( 'install_themes' ) || current_user_can( 'update_themes' ) || current_user_can( 'delete_themes' ) ) ) {
4564              wp_enqueue_script( 'updates' );
4565              wp_localize_script(
4566                  'updates',
4567                  '_wpUpdatesItemCounts',
4568                  array(
4569                      'totals' => wp_get_update_data(),
4570                  )
4571              );
4572          }
4573      }
4574  
4575      /**
4576       * Determines whether the user agent is iOS.
4577       *
4578       * @since 4.4.0
4579       *
4580       * @return bool Whether the user agent is iOS.
4581       */
4582  	public function is_ios() {
4583          return wp_is_mobile() && preg_match( '/iPad|iPod|iPhone/', $_SERVER['HTTP_USER_AGENT'] );
4584      }
4585  
4586      /**
4587       * Gets the template string for the Customizer pane document title.
4588       *
4589       * @since 4.4.0
4590       *
4591       * @return string The template string for the document title.
4592       */
4593  	public function get_document_title_template() {
4594          if ( $this->is_theme_active() ) {
4595              /* translators: %s: Document title from the preview. */
4596              $document_title_tmpl = __( 'Customize: %s' );
4597          } else {
4598              /* translators: %s: Document title from the preview. */
4599              $document_title_tmpl = __( 'Live Preview: %s' );
4600          }
4601          $document_title_tmpl = html_entity_decode( $document_title_tmpl, ENT_QUOTES, 'UTF-8' ); // Because exported to JS and assigned to document.title.
4602          return $document_title_tmpl;
4603      }
4604  
4605      /**
4606       * Sets the initial URL to be previewed.
4607       *
4608       * URL is validated.
4609       *
4610       * @since 4.4.0
4611       *
4612       * @param string $preview_url URL to be previewed.
4613       */
4614  	public function set_preview_url( $preview_url ) {
4615          $preview_url       = sanitize_url( $preview_url );
4616          $this->preview_url = wp_validate_redirect( $preview_url, home_url( '/' ) );
4617      }
4618  
4619      /**
4620       * Gets the initial URL to be previewed.
4621       *
4622       * @since 4.4.0
4623       *
4624       * @return string URL being previewed.
4625       */
4626  	public function get_preview_url() {
4627          if ( empty( $this->preview_url ) ) {
4628              $preview_url = home_url( '/' );
4629          } else {
4630              $preview_url = $this->preview_url;
4631          }
4632          return $preview_url;
4633      }
4634  
4635      /**
4636       * Determines whether the admin and the frontend are on different domains.
4637       *
4638       * @since 4.7.0
4639       *
4640       * @return bool Whether cross-domain.
4641       */
4642  	public function is_cross_domain() {
4643          $admin_origin = wp_parse_url( admin_url() );
4644          $home_origin  = wp_parse_url( home_url() );
4645          $cross_domain = ( strtolower( $admin_origin['host'] ) !== strtolower( $home_origin['host'] ) );
4646          return $cross_domain;
4647      }
4648  
4649      /**
4650       * Gets URLs allowed to be previewed.
4651       *
4652       * If the front end and the admin are served from the same domain, load the
4653       * preview over ssl if the Customizer is being loaded over ssl. This avoids
4654       * insecure content warnings. This is not attempted if the admin and front end
4655       * are on different domains to avoid the case where the front end doesn't have
4656       * ssl certs. Domain mapping plugins can allow other urls in these conditions
4657       * using the customize_allowed_urls filter.
4658       *
4659       * @since 4.7.0
4660       *
4661       * @return array Allowed URLs.
4662       */
4663  	public function get_allowed_urls() {
4664          $allowed_urls = array( home_url( '/' ) );
4665  
4666          if ( is_ssl() && ! $this->is_cross_domain() ) {
4667              $allowed_urls[] = home_url( '/', 'https' );
4668          }
4669  
4670          /**
4671           * Filters the list of URLs allowed to be clicked and followed in the Customizer preview.
4672           *
4673           * @since 3.4.0
4674           *
4675           * @param string[] $allowed_urls An array of allowed URLs.
4676           */
4677          $allowed_urls = array_unique( apply_filters( 'customize_allowed_urls', $allowed_urls ) );
4678  
4679          return $allowed_urls;
4680      }
4681  
4682      /**
4683       * Gets messenger channel.
4684       *
4685       * @since 4.7.0
4686       *
4687       * @return string Messenger channel.
4688       */
4689  	public function get_messenger_channel() {
4690          return $this->messenger_channel;
4691      }
4692  
4693      /**
4694       * Sets URL to link the user to when closing the Customizer.
4695       *
4696       * URL is validated.
4697       *
4698       * @since 4.4.0
4699       *
4700       * @param string $return_url URL for return link.
4701       */
4702  	public function set_return_url( $return_url ) {
4703          $return_url       = sanitize_url( $return_url );
4704          $return_url       = remove_query_arg( wp_removable_query_args(), $return_url );
4705          $return_url       = wp_validate_redirect( $return_url );
4706          $this->return_url = $return_url;
4707      }
4708  
4709      /**
4710       * Gets URL to link the user to when closing the Customizer.
4711       *
4712       * @since 4.4.0
4713       *
4714       * @global array $_registered_pages
4715       *
4716       * @return string URL for link to close Customizer.
4717       */
4718  	public function get_return_url() {
4719          global $_registered_pages;
4720  
4721          $referer                    = wp_get_referer();
4722          $excluded_referer_basenames = array( 'customize.php', 'wp-login.php' );
4723  
4724          if ( $this->return_url ) {
4725              $return_url = $this->return_url;
4726  
4727              $return_url_basename = wp_basename( parse_url( $this->return_url, PHP_URL_PATH ) );
4728              $return_url_query    = parse_url( $this->return_url, PHP_URL_QUERY );
4729  
4730              if ( 'themes.php' === $return_url_basename && $return_url_query ) {
4731                  parse_str( $return_url_query, $query_vars );
4732  
4733                  /*
4734                   * If the return URL is a page added by a theme to the Appearance menu via add_submenu_page(),
4735                   * verify that it belongs to the active theme, otherwise fall back to the Themes screen.
4736                   */
4737                  if ( isset( $query_vars['page'] ) && ! isset( $_registered_pages[ "appearance_page_{$query_vars['page']}" ] ) ) {
4738                      $return_url = admin_url( 'themes.php' );
4739                  }
4740              }
4741          } elseif ( $referer && ! in_array( wp_basename( parse_url( $referer, PHP_URL_PATH ) ), $excluded_referer_basenames, true ) ) {
4742              $return_url = $referer;
4743          } elseif ( $this->preview_url ) {
4744              $return_url = $this->preview_url;
4745          } else {
4746              $return_url = home_url( '/' );
4747          }
4748  
4749          return $return_url;
4750      }
4751  
4752      /**
4753       * Sets the autofocused constructs.
4754       *
4755       * @since 4.4.0
4756       *
4757       * @param array $autofocus {
4758       *     Mapping of 'panel', 'section', 'control' to the ID which should be autofocused.
4759       *
4760       *     @type string $control ID for control to be autofocused.
4761       *     @type string $section ID for section to be autofocused.
4762       *     @type string $panel   ID for panel to be autofocused.
4763       * }
4764       */
4765  	public function set_autofocus( $autofocus ) {
4766          $this->autofocus = array_filter( wp_array_slice_assoc( $autofocus, array( 'panel', 'section', 'control' ) ), 'is_string' );
4767      }
4768  
4769      /**
4770       * Gets the autofocused constructs.
4771       *
4772       * @since 4.4.0
4773       *
4774       * @return string[] {
4775       *     Mapping of 'panel', 'section', 'control' to the ID which should be autofocused.
4776       *
4777       *     @type string $control ID for control to be autofocused.
4778       *     @type string $section ID for section to be autofocused.
4779       *     @type string $panel   ID for panel to be autofocused.
4780       * }
4781       */
4782  	public function get_autofocus() {
4783          return $this->autofocus;
4784      }
4785  
4786      /**
4787       * Gets nonces for the Customizer.
4788       *
4789       * @since 4.5.0
4790       *
4791       * @return array Nonces.
4792       */
4793  	public function get_nonces() {
4794          $nonces = array(
4795              'save'                     => wp_create_nonce( 'save-customize_' . $this->get_stylesheet() ),
4796              'preview'                  => wp_create_nonce( 'preview-customize_' . $this->get_stylesheet() ),
4797              'switch_themes'            => wp_create_nonce( 'switch_themes' ),
4798              'dismiss_autosave_or_lock' => wp_create_nonce( 'customize_dismiss_autosave_or_lock' ),
4799              'override_lock'            => wp_create_nonce( 'customize_override_changeset_lock' ),
4800              'trash'                    => wp_create_nonce( 'trash_customize_changeset' ),
4801          );
4802  
4803          /**
4804           * Filters nonces for Customizer.
4805           *
4806           * @since 4.2.0
4807           *
4808           * @param string[]             $nonces  Array of refreshed nonces for save and
4809           *                                      preview actions.
4810           * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
4811           */
4812          $nonces = apply_filters( 'customize_refresh_nonces', $nonces, $this );
4813  
4814          return $nonces;
4815      }
4816  
4817      /**
4818       * Prints JavaScript settings for parent window.
4819       *
4820       * @since 4.4.0
4821       */
4822  	public function customize_pane_settings() {
4823  
4824          $login_url = add_query_arg(
4825              array(
4826                  'interim-login'   => 1,
4827                  'customize-login' => 1,
4828              ),
4829              wp_login_url()
4830          );
4831  
4832          // Ensure dirty flags are set for modified settings.
4833          foreach ( array_keys( $this->unsanitized_post_values() ) as $setting_id ) {
4834              $setting = $this->get_setting( $setting_id );
4835              if ( $setting ) {
4836                  $setting->dirty = true;
4837              }
4838          }
4839  
4840          $autosave_revision_post  = null;
4841          $autosave_autodraft_post = null;
4842          $changeset_post_id       = $this->changeset_post_id();
4843          if ( ! $this->saved_starter_content_changeset && ! $this->autosaved() ) {
4844              if ( $changeset_post_id ) {
4845                  if ( is_user_logged_in() ) {
4846                      $autosave_revision_post = wp_get_post_autosave( $changeset_post_id, get_current_user_id() );
4847                  }
4848              } else {
4849                  $autosave_autodraft_posts = $this->get_changeset_posts(
4850                      array(
4851                          'posts_per_page'            => 1,
4852                          'post_status'               => 'auto-draft',
4853                          'exclude_restore_dismissed' => true,
4854                      )
4855                  );
4856                  if ( ! empty( $autosave_autodraft_posts ) ) {
4857                      $autosave_autodraft_post = array_shift( $autosave_autodraft_posts );
4858                  }
4859              }
4860          }
4861  
4862          $current_user_can_publish = current_user_can( get_post_type_object( 'customize_changeset' )->cap->publish_posts );
4863  
4864          // @todo Include all of the status labels here from script-loader.php, and then allow it to be filtered.
4865          $status_choices = array();
4866          if ( $current_user_can_publish ) {
4867              $status_choices[] = array(
4868                  'status' => 'publish',
4869                  'label'  => __( 'Publish' ),
4870              );
4871          }
4872          $status_choices[] = array(
4873              'status' => 'draft',
4874              'label'  => __( 'Save Draft' ),
4875          );
4876          if ( $current_user_can_publish ) {
4877              $status_choices[] = array(
4878                  'status' => 'future',
4879                  'label'  => _x( 'Schedule', 'customizer changeset action/button label' ),
4880              );
4881          }
4882  
4883          // Prepare Customizer settings to pass to JavaScript.
4884          $changeset_post = null;
4885          if ( $changeset_post_id ) {
4886              $changeset_post = get_post( $changeset_post_id );
4887          }
4888  
4889          // Determine initial date to be at present or future, not past.
4890          $current_time = current_time( 'mysql', false );
4891          $initial_date = $current_time;
4892          if ( $changeset_post ) {
4893              $initial_date = get_the_time( 'Y-m-d H:i:s', $changeset_post->ID );
4894              if ( $initial_date < $current_time ) {
4895                  $initial_date = $current_time;
4896              }
4897          }
4898  
4899          $lock_user_id = false;
4900          if ( $this->changeset_post_id() ) {
4901              $lock_user_id = wp_check_post_lock( $this->changeset_post_id() );
4902          }
4903  
4904          $settings = array(
4905              'changeset'              => array(
4906                  'uuid'                  => $this->changeset_uuid(),
4907                  'branching'             => $this->branching(),
4908                  'autosaved'             => $this->autosaved(),
4909                  'hasAutosaveRevision'   => ! empty( $autosave_revision_post ),
4910                  'latestAutoDraftUuid'   => $autosave_autodraft_post ? $autosave_autodraft_post->post_name : null,
4911                  'status'                => $changeset_post ? $changeset_post->post_status : '',
4912                  'currentUserCanPublish' => $current_user_can_publish,
4913                  'publishDate'           => $initial_date,
4914                  'statusChoices'         => $status_choices,
4915                  'lockUser'              => $lock_user_id ? $this->get_lock_user_data( $lock_user_id ) : null,
4916              ),
4917              'initialServerDate'      => $current_time,
4918              'dateFormat'             => get_option( 'date_format' ),
4919              'timeFormat'             => get_option( 'time_format' ),
4920              'initialServerTimestamp' => floor( microtime( true ) * 1000 ),
4921              'initialClientTimestamp' => -1, // To be set with JS below.
4922              'timeouts'               => array(
4923                  'windowRefresh'           => 250,
4924                  'changesetAutoSave'       => AUTOSAVE_INTERVAL * 1000,
4925                  'keepAliveCheck'          => 2500,
4926                  'reflowPaneContents'      => 100,
4927                  'previewFrameSensitivity' => 2000,
4928              ),
4929              'theme'                  => array(
4930                  'stylesheet'  => $this->get_stylesheet(),
4931                  'active'      => $this->is_theme_active(),
4932                  '_canInstall' => current_user_can( 'install_themes' ),
4933              ),
4934              'url'                    => array(
4935                  'preview'       => sanitize_url( $this->get_preview_url() ),
4936                  'return'        => sanitize_url( $this->get_return_url() ),
4937                  'parent'        => sanitize_url( admin_url() ),
4938                  'activated'     => sanitize_url( home_url( '/' ) ),
4939                  'ajax'          => sanitize_url( admin_url( 'admin-ajax.php', 'relative' ) ),
4940                  'allowed'       => array_map( 'sanitize_url', $this->get_allowed_urls() ),
4941                  'isCrossDomain' => $this->is_cross_domain(),
4942                  'home'          => sanitize_url( home_url( '/' ) ),
4943                  'login'         => sanitize_url( $login_url ),
4944              ),
4945              'browser'                => array(
4946                  'mobile' => wp_is_mobile(),
4947                  'ios'    => $this->is_ios(),
4948              ),
4949              'panels'                 => array(),
4950              'sections'               => array(),
4951              'nonce'                  => $this->get_nonces(),
4952              'autofocus'              => $this->get_autofocus(),
4953              'documentTitleTmpl'      => $this->get_document_title_template(),
4954              'previewableDevices'     => $this->get_previewable_devices(),
4955              'l10n'                   => array(
4956                  'confirmDeleteTheme'   => __( 'Are you sure you want to delete this theme?' ),
4957                  /* translators: %d: Number of theme search results, which cannot currently consider singular vs. plural forms. */
4958                  'themeSearchResults'   => __( '%d themes found' ),
4959                  /* translators: %d: Number of themes being displayed, which cannot currently consider singular vs. plural forms. */
4960                  'announceThemeCount'   => __( 'Displaying %d themes' ),
4961                  /* translators: %s: Theme name. */
4962                  'announceThemeDetails' => __( 'Showing details for theme: %s' ),
4963              ),
4964          );
4965  
4966          // Temporarily disable installation in Customizer. See #42184.
4967          $filesystem_method = get_filesystem_method();
4968          ob_start();
4969          $filesystem_credentials_are_stored = request_filesystem_credentials( self_admin_url() );
4970          ob_end_clean();
4971          if ( 'direct' !== $filesystem_method && ! $filesystem_credentials_are_stored ) {
4972              $settings['theme']['_filesystemCredentialsNeeded'] = true;
4973          }
4974  
4975          // Prepare Customize Section objects to pass to JavaScript.
4976          foreach ( $this->sections() as $id => $section ) {
4977              if ( $section->check_capabilities() ) {
4978                  $settings['sections'][ $id ] = $section->json();
4979              }
4980          }
4981  
4982          // Prepare Customize Panel objects to pass to JavaScript.
4983          foreach ( $this->panels() as $panel_id => $panel ) {
4984              if ( $panel->check_capabilities() ) {
4985                  $settings['panels'][ $panel_id ] = $panel->json();
4986                  foreach ( $panel->sections as $section_id => $section ) {
4987                      if ( $section->check_capabilities() ) {
4988                          $settings['sections'][ $section_id ] = $section->json();
4989                      }
4990                  }
4991              }
4992          }
4993  
4994          ob_start();
4995          ?>
4996          <script>
4997              var _wpCustomizeSettings = <?php echo wp_json_encode( $settings, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ); ?>;
4998              _wpCustomizeSettings.initialClientTimestamp = _.now();
4999              _wpCustomizeSettings.controls = {};
5000              _wpCustomizeSettings.settings = {};
5001              <?php
5002  
5003              // Serialize settings one by one to improve memory usage.
5004              echo "(function ( s ){\n";
5005              foreach ( $this->settings() as $setting ) {
5006                  if ( $setting->check_capabilities() ) {
5007                      printf(
5008                          "s[%s] = %s;\n",
5009                          wp_json_encode( $setting->id, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ),
5010                          wp_json_encode( $setting->json(), JSON_HEX_TAG | JSON_UNESCAPED_SLASHES )
5011                      );
5012                  }
5013              }
5014              echo "})( _wpCustomizeSettings.settings );\n";
5015  
5016              // Serialize controls one by one to improve memory usage.
5017              echo "(function ( c ){\n";
5018              foreach ( $this->controls() as $control ) {
5019                  if ( $control->check_capabilities() ) {
5020                      printf(
5021                          "c[%s] = %s;\n",
5022                          wp_json_encode( $control->id, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ),
5023                          wp_json_encode( $control->json(), JSON_HEX_TAG | JSON_UNESCAPED_SLASHES )
5024                      );
5025                  }
5026              }
5027              echo "})( _wpCustomizeSettings.controls );\n";
5028              ?>
5029          </script>
5030          <?php
5031          wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
5032      }
5033  
5034      /**
5035       * Returns a list of devices to allow previewing.
5036       *
5037       * @since 4.5.0
5038       *
5039       * @return array List of devices with labels and default setting.
5040       */
5041  	public function get_previewable_devices() {
5042          $devices = array(
5043              'desktop' => array(
5044                  'label'   => __( 'Desktop' ),
5045                  'default' => true,
5046              ),
5047              'tablet'  => array(
5048                  'label' => __( 'Tablet' ),
5049              ),
5050              'mobile'  => array(
5051                  'label' => __( 'Mobile' ),
5052              ),
5053          );
5054  
5055          /**
5056           * Filters the available devices to allow previewing in the Customizer.
5057           *
5058           * @since 4.5.0
5059           *
5060           * @see WP_Customize_Manager::get_previewable_devices()
5061           *
5062           * @param array $devices List of devices with labels and default setting.
5063           */
5064          $devices = apply_filters( 'customize_previewable_devices', $devices );
5065  
5066          return $devices;
5067      }
5068  
5069      /**
5070       * Registers some default controls.
5071       *
5072       * @since 3.4.0
5073       */
5074  	public function register_controls() {
5075  
5076          /* Themes (controls are loaded via ajax) */
5077  
5078          $this->add_panel(
5079              new WP_Customize_Themes_Panel(
5080                  $this,
5081                  'themes',
5082                  array(
5083                      'title'       => $this->theme()->display( 'Name' ),
5084                      'description' => (
5085                      '<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>' .
5086                      '<p>' . __( 'While previewing a new theme, you can continue to tailor things like widgets and menus, and explore theme-specific options.' ) . '</p>'
5087                      ),
5088                      'capability'  => 'switch_themes',
5089                      'priority'    => 0,
5090                  )
5091              )
5092          );
5093  
5094          $this->add_section(
5095              new WP_Customize_Themes_Section(
5096                  $this,
5097                  'installed_themes',
5098                  array(
5099                      'title'      => __( 'Installed themes' ),
5100                      'action'     => 'installed',
5101                      'capability' => 'switch_themes',
5102                      'panel'      => 'themes',
5103                      'priority'   => 0,
5104                  )
5105              )
5106          );
5107  
5108          if ( ! is_multisite() ) {
5109              $this->add_section(
5110                  new WP_Customize_Themes_Section(
5111                      $this,
5112                      'wporg_themes',
5113                      array(
5114                          'title'       => __( 'WordPress.org themes' ),
5115                          'action'      => 'wporg',
5116                          'filter_type' => 'remote',
5117                          'capability'  => 'install_themes',
5118                          'panel'       => 'themes',
5119                          'priority'    => 5,
5120                      )
5121                  )
5122              );
5123          }
5124  
5125          // Themes Setting (unused - the theme is considerably more fundamental to the Customizer experience).
5126          $this->add_setting(
5127              new WP_Customize_Filter_Setting(
5128                  $this,
5129                  'active_theme',
5130                  array(
5131                      'capability' => 'switch_themes',
5132                  )
5133              )
5134          );
5135  
5136          /* Site Identity */
5137  
5138          $this->add_section(
5139              'title_tagline',
5140              array(
5141                  'title'    => __( 'Site Identity' ),
5142                  'priority' => 20,
5143              )
5144          );
5145  
5146          $this->add_setting(
5147              'blogname',
5148              array(
5149                  'default'    => get_option( 'blogname' ),
5150                  'type'       => 'option',
5151                  'capability' => 'manage_options',
5152              )
5153          );
5154  
5155          $this->add_control(
5156              'blogname',
5157              array(
5158                  'label'   => __( 'Site Title' ),
5159                  'section' => 'title_tagline',
5160              )
5161          );
5162  
5163          $this->add_setting(
5164              'blogdescription',
5165              array(
5166                  'default'    => get_option( 'blogdescription' ),
5167                  'type'       => 'option',
5168                  'capability' => 'manage_options',
5169              )
5170          );
5171  
5172          $this->add_control(
5173              'blogdescription',
5174              array(
5175                  'label'   => __( 'Tagline' ),
5176                  'section' => 'title_tagline',
5177              )
5178          );
5179  
5180          // Add a setting to hide header text if the theme doesn't support custom headers.
5181          if ( ! current_theme_supports( 'custom-header', 'header-text' ) ) {
5182              $this->add_setting(
5183                  'header_text',
5184                  array(
5185                      'theme_supports'    => array( 'custom-logo', 'header-text' ),
5186                      'default'           => 1,
5187                      'sanitize_callback' => 'absint',
5188                  )
5189              );
5190  
5191              $this->add_control(
5192                  'header_text',
5193                  array(
5194                      'label'    => __( 'Display Site Title and Tagline' ),
5195                      'section'  => 'title_tagline',
5196                      'settings' => 'header_text',
5197                      'type'     => 'checkbox',
5198                  )
5199              );
5200          }
5201  
5202          $this->add_setting(
5203              'site_icon',
5204              array(
5205                  'type'       => 'option',
5206                  'capability' => 'manage_options',
5207                  'transport'  => 'postMessage', // Previewed with JS in the Customizer controls window.
5208              )
5209          );
5210  
5211          $this->add_control(
5212              new WP_Customize_Site_Icon_Control(
5213                  $this,
5214                  'site_icon',
5215                  array(
5216                      'label'       => __( 'Site Icon' ),
5217                      'description' => sprintf(
5218                          /* translators: 1: pixel value for icon size. 2: pixel value for icon size. */
5219                          '<p>' . __( 'The Site Icon is what you see in browser tabs, bookmark bars, and within the WordPress mobile apps. It should be square and at least <strong>%1$s by %2$s</strong> pixels.' ) . '</p>',
5220                          512,
5221                          512
5222                      ),
5223                      'section'     => 'title_tagline',
5224                      'priority'    => 60,
5225                      'height'      => 512,
5226                      'width'       => 512,
5227                  )
5228              )
5229          );
5230  
5231          $this->add_setting(
5232              'custom_logo',
5233              array(
5234                  'theme_supports' => array( 'custom-logo' ),
5235                  'transport'      => 'postMessage',
5236              )
5237          );
5238  
5239          $custom_logo_args = get_theme_support( 'custom-logo' );
5240          $this->add_control(
5241              new WP_Customize_Cropped_Image_Control(
5242                  $this,
5243                  'custom_logo',
5244                  array(
5245                      'label'         => __( 'Logo' ),
5246                      'section'       => 'title_tagline',
5247                      'priority'      => 8,
5248                      'height'        => $custom_logo_args[0]['height'] ?? null,
5249                      'width'         => $custom_logo_args[0]['width'] ?? null,
5250                      'flex_height'   => $custom_logo_args[0]['flex-height'] ?? null,
5251                      'flex_width'    => $custom_logo_args[0]['flex-width'] ?? null,
5252                      'button_labels' => array(
5253                          'select'       => __( 'Select logo' ),
5254                          'change'       => __( 'Change logo' ),
5255                          'remove'       => __( 'Remove' ),
5256                          'default'      => __( 'Default' ),
5257                          'placeholder'  => __( 'No logo selected' ),
5258                          'frame_title'  => __( 'Select logo' ),
5259                          'frame_button' => __( 'Choose logo' ),
5260                      ),
5261                  )
5262              )
5263          );
5264  
5265          $this->selective_refresh->add_partial(
5266              'custom_logo',
5267              array(
5268                  'settings'            => array( 'custom_logo' ),
5269                  'selector'            => '.custom-logo-link',
5270                  'render_callback'     => array( $this, '_render_custom_logo_partial' ),
5271                  'container_inclusive' => true,
5272              )
5273          );
5274  
5275          /* Colors */
5276  
5277          $this->add_section(
5278              'colors',
5279              array(
5280                  'title'    => __( 'Colors' ),
5281                  'priority' => 40,
5282              )
5283          );
5284  
5285          $this->add_setting(
5286              'header_textcolor',
5287              array(
5288                  'theme_supports'       => array( 'custom-header', 'header-text' ),
5289                  'default'              => get_theme_support( 'custom-header', 'default-text-color' ),
5290  
5291                  'sanitize_callback'    => array( $this, '_sanitize_header_textcolor' ),
5292                  'sanitize_js_callback' => 'maybe_hash_hex_color',
5293              )
5294          );
5295  
5296          // Input type: checkbox, with custom value.
5297          $this->add_control(
5298              'display_header_text',
5299              array(
5300                  'settings' => 'header_textcolor',
5301                  'label'    => __( 'Display Site Title and Tagline' ),
5302                  'section'  => 'title_tagline',
5303                  'type'     => 'checkbox',
5304                  'priority' => 40,
5305              )
5306          );
5307  
5308          $this->add_control(
5309              new WP_Customize_Color_Control(
5310                  $this,
5311                  'header_textcolor',
5312                  array(
5313                      'label'   => __( 'Header Text Color' ),
5314                      'section' => 'colors',
5315                  )
5316              )
5317          );
5318  
5319          // Input type: color, with sanitize_callback.
5320          $this->add_setting(
5321              'background_color',
5322              array(
5323                  'default'              => get_theme_support( 'custom-background', 'default-color' ),
5324                  'theme_supports'       => 'custom-background',
5325  
5326                  'sanitize_callback'    => 'sanitize_hex_color_no_hash',
5327                  'sanitize_js_callback' => 'maybe_hash_hex_color',
5328              )
5329          );
5330  
5331          $this->add_control(
5332              new WP_Customize_Color_Control(
5333                  $this,
5334                  'background_color',
5335                  array(
5336                      'label'   => __( 'Background Color' ),
5337                      'section' => 'colors',
5338                  )
5339              )
5340          );
5341  
5342          /* Custom Header */
5343  
5344          if ( current_theme_supports( 'custom-header', 'video' ) ) {
5345              $title       = __( 'Header Media' );
5346              $description = '<p>' . __( 'If you add a video, the image will be used as a fallback while the video loads.' ) . '</p>';
5347  
5348              $width  = absint( get_theme_support( 'custom-header', 'width' ) );
5349              $height = absint( get_theme_support( 'custom-header', 'height' ) );
5350              if ( $width && $height ) {
5351                  $control_description = sprintf(
5352                      /* translators: 1: .mp4, 2: Header size in pixels. */
5353                      __( 'Upload your video in %1$s format and minimize its file size for best results. Your theme recommends dimensions of %2$s pixels.' ),
5354                      '<code>.mp4</code>',
5355                      sprintf( '<strong>%s &times; %s</strong>', $width, $height )
5356                  );
5357              } elseif ( $width ) {
5358                  $control_description = sprintf(
5359                      /* translators: 1: .mp4, 2: Header width in pixels. */
5360                      __( 'Upload your video in %1$s format and minimize its file size for best results. Your theme recommends a width of %2$s pixels.' ),
5361                      '<code>.mp4</code>',
5362                      sprintf( '<strong>%s</strong>', $width )
5363                  );
5364              } else {
5365                  $control_description = sprintf(
5366                      /* translators: 1: .mp4, 2: Header height in pixels. */
5367                      __( 'Upload your video in %1$s format and minimize its file size for best results. Your theme recommends a height of %2$s pixels.' ),
5368                      '<code>.mp4</code>',
5369                      sprintf( '<strong>%s</strong>', $height )
5370                  );
5371              }
5372          } else {
5373              $title               = __( 'Header Image' );
5374              $description         = '';
5375              $control_description = '';
5376          }
5377  
5378          $this->add_section(
5379              'header_image',
5380              array(
5381                  'title'          => $title,
5382                  'description'    => $description,
5383                  'theme_supports' => 'custom-header',
5384                  'priority'       => 60,
5385              )
5386          );
5387  
5388          $this->add_setting(
5389              'header_video',
5390              array(
5391                  'theme_supports'    => array( 'custom-header', 'video' ),
5392                  'transport'         => 'postMessage',
5393                  'sanitize_callback' => 'absint',
5394                  'validate_callback' => array( $this, '_validate_header_video' ),
5395              )
5396          );
5397  
5398          $this->add_setting(
5399              'external_header_video',
5400              array(
5401                  'theme_supports'    => array( 'custom-header', 'video' ),
5402                  'transport'         => 'postMessage',
5403                  'sanitize_callback' => array( $this, '_sanitize_external_header_video' ),
5404                  'validate_callback' => array( $this, '_validate_external_header_video' ),
5405              )
5406          );
5407  
5408          $this->add_setting(
5409              new WP_Customize_Filter_Setting(
5410                  $this,
5411                  'header_image',
5412                  array(
5413                      'default'        => sprintf( get_theme_support( 'custom-header', 'default-image' ), get_template_directory_uri(), get_stylesheet_directory_uri() ),
5414                      'theme_supports' => 'custom-header',
5415                  )
5416              )
5417          );
5418  
5419          $this->add_setting(
5420              new WP_Customize_Header_Image_Setting(
5421                  $this,
5422                  'header_image_data',
5423                  array(
5424                      'theme_supports' => 'custom-header',
5425                  )
5426              )
5427          );
5428  
5429          /*
5430           * Switch image settings to postMessage when video support is enabled since
5431           * it entails that the_custom_header_markup() will be used, and thus selective
5432           * refresh can be utilized.
5433           */
5434          if ( current_theme_supports( 'custom-header', 'video' ) ) {
5435              $this->get_setting( 'header_image' )->transport      = 'postMessage';
5436              $this->get_setting( 'header_image_data' )->transport = 'postMessage';
5437          }
5438  
5439          $this->add_control(
5440              new WP_Customize_Media_Control(
5441                  $this,
5442                  'header_video',
5443                  array(
5444                      'theme_supports'  => array( 'custom-header', 'video' ),
5445                      'label'           => __( 'Header Video' ),
5446                      'description'     => $control_description,
5447                      'section'         => 'header_image',
5448                      'mime_type'       => 'video',
5449                      'active_callback' => 'is_header_video_active',
5450                  )
5451              )
5452          );
5453  
5454          $this->add_control(
5455              'external_header_video',
5456              array(
5457                  'theme_supports'  => array( 'custom-header', 'video' ),
5458                  'type'            => 'url',
5459                  'description'     => __( 'Or, enter a YouTube URL:' ),
5460                  'section'         => 'header_image',
5461                  'active_callback' => 'is_header_video_active',
5462              )
5463          );
5464  
5465          $this->add_control( new WP_Customize_Header_Image_Control( $this ) );
5466  
5467          $this->selective_refresh->add_partial(
5468              'custom_header',
5469              array(
5470                  'selector'            => '#wp-custom-header',
5471                  'render_callback'     => 'the_custom_header_markup',
5472                  'settings'            => array( 'header_video', 'external_header_video', 'header_image' ), // The image is used as a video fallback here.
5473                  'container_inclusive' => true,
5474              )
5475          );
5476  
5477          /* Custom Background */
5478  
5479          $this->add_section(
5480              'background_image',
5481              array(
5482                  'title'          => __( 'Background Image' ),
5483                  'theme_supports' => 'custom-background',
5484                  'priority'       => 80,
5485              )
5486          );
5487  
5488          $this->add_setting(
5489              'background_image',
5490              array(
5491                  'default'           => get_theme_support( 'custom-background', 'default-image' ),
5492                  'theme_supports'    => 'custom-background',
5493                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5494              )
5495          );
5496  
5497          $this->add_setting(
5498              new WP_Customize_Background_Image_Setting(
5499                  $this,
5500                  'background_image_thumb',
5501                  array(
5502                      'theme_supports'    => 'custom-background',
5503                      'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5504                  )
5505              )
5506          );
5507  
5508          $this->add_control( new WP_Customize_Background_Image_Control( $this ) );
5509  
5510          $this->add_setting(
5511              'background_preset',
5512              array(
5513                  'default'           => get_theme_support( 'custom-background', 'default-preset' ),
5514                  'theme_supports'    => 'custom-background',
5515                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5516              )
5517          );
5518  
5519          $this->add_control(
5520              'background_preset',
5521              array(
5522                  'label'   => _x( 'Preset', 'Background Preset' ),
5523                  'section' => 'background_image',
5524                  'type'    => 'select',
5525                  'choices' => array(
5526                      'default' => _x( 'Default', 'Default Preset' ),
5527                      'fill'    => __( 'Fill Screen' ),
5528                      'fit'     => __( 'Fit to Screen' ),
5529                      'repeat'  => _x( 'Repeat', 'Repeat Image' ),
5530                      'custom'  => _x( 'Custom', 'Custom Preset' ),
5531                  ),
5532              )
5533          );
5534  
5535          $this->add_setting(
5536              'background_position_x',
5537              array(
5538                  'default'           => get_theme_support( 'custom-background', 'default-position-x' ),
5539                  'theme_supports'    => 'custom-background',
5540                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5541              )
5542          );
5543  
5544          $this->add_setting(
5545              'background_position_y',
5546              array(
5547                  'default'           => get_theme_support( 'custom-background', 'default-position-y' ),
5548                  'theme_supports'    => 'custom-background',
5549                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5550              )
5551          );
5552  
5553          $this->add_control(
5554              new WP_Customize_Background_Position_Control(
5555                  $this,
5556                  'background_position',
5557                  array(
5558                      'label'    => __( 'Image Position' ),
5559                      'section'  => 'background_image',
5560                      'settings' => array(
5561                          'x' => 'background_position_x',
5562                          'y' => 'background_position_y',
5563                      ),
5564                  )
5565              )
5566          );
5567  
5568          $this->add_setting(
5569              'background_size',
5570              array(
5571                  'default'           => get_theme_support( 'custom-background', 'default-size' ),
5572                  'theme_supports'    => 'custom-background',
5573                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5574              )
5575          );
5576  
5577          $this->add_control(
5578              'background_size',
5579              array(
5580                  'label'   => __( 'Image Size' ),
5581                  'section' => 'background_image',
5582                  'type'    => 'select',
5583                  'choices' => array(
5584                      'auto'    => _x( 'Original', 'Original Size' ),
5585                      'contain' => __( 'Fit to Screen' ),
5586                      'cover'   => __( 'Fill Screen' ),
5587                  ),
5588              )
5589          );
5590  
5591          $this->add_setting(
5592              'background_repeat',
5593              array(
5594                  'default'           => get_theme_support( 'custom-background', 'default-repeat' ),
5595                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5596                  'theme_supports'    => 'custom-background',
5597              )
5598          );
5599  
5600          $this->add_control(
5601              'background_repeat',
5602              array(
5603                  'label'   => __( 'Repeat Background Image' ),
5604                  'section' => 'background_image',
5605                  'type'    => 'checkbox',
5606              )
5607          );
5608  
5609          $this->add_setting(
5610              'background_attachment',
5611              array(
5612                  'default'           => get_theme_support( 'custom-background', 'default-attachment' ),
5613                  'sanitize_callback' => array( $this, '_sanitize_background_setting' ),
5614                  'theme_supports'    => 'custom-background',
5615              )
5616          );
5617  
5618          $this->add_control(
5619              'background_attachment',
5620              array(
5621                  'label'   => __( 'Scroll with Page' ),
5622                  'section' => 'background_image',
5623                  'type'    => 'checkbox',
5624              )
5625          );
5626  
5627          /*
5628           * If the theme is using the default background callback, we can update
5629           * the background CSS using postMessage.
5630           */
5631          if ( get_theme_support( 'custom-background', 'wp-head-callback' ) === '_custom_background_cb' ) {
5632              foreach ( array( 'color', 'image', 'preset', 'position_x', 'position_y', 'size', 'repeat', 'attachment' ) as $prop ) {
5633                  $this->get_setting( 'background_' . $prop )->transport = 'postMessage';
5634              }
5635          }
5636  
5637          /*
5638           * Static Front Page
5639           * See also https://core.trac.wordpress.org/ticket/19627 which introduces the static-front-page theme_support.
5640           * The following replicates behavior from options-reading.php.
5641           */
5642  
5643          $this->add_section(
5644              'static_front_page',
5645              array(
5646                  'title'           => __( 'Homepage Settings' ),
5647                  'priority'        => 120,
5648                  '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.' ),
5649                  'active_callback' => array( $this, 'has_published_pages' ),
5650              )
5651          );
5652  
5653          $this->add_setting(
5654              'show_on_front',
5655              array(
5656                  'default'    => get_option( 'show_on_front' ),
5657                  'capability' => 'manage_options',
5658                  'type'       => 'option',
5659              )
5660          );
5661  
5662          $this->add_control(
5663              'show_on_front',
5664              array(
5665                  'label'   => __( 'Your homepage displays' ),
5666                  'section' => 'static_front_page',
5667                  'type'    => 'radio',
5668                  'choices' => array(
5669                      'posts' => __( 'Your latest posts' ),
5670                      'page'  => __( 'A static page' ),
5671                  ),
5672              )
5673          );
5674  
5675          $this->add_setting(
5676              'page_on_front',
5677              array(
5678                  'type'       => 'option',
5679                  'capability' => 'manage_options',
5680              )
5681          );
5682  
5683          $this->add_control(
5684              'page_on_front',
5685              array(
5686                  'label'          => __( 'Homepage' ),
5687                  'section'        => 'static_front_page',
5688                  'type'           => 'dropdown-pages',
5689                  'allow_addition' => true,
5690              )
5691          );
5692  
5693          $this->add_setting(
5694              'page_for_posts',
5695              array(
5696                  'type'       => 'option',
5697                  'capability' => 'manage_options',
5698              )
5699          );
5700  
5701          $this->add_control(
5702              'page_for_posts',
5703              array(
5704                  'label'          => __( 'Posts page' ),
5705                  'section'        => 'static_front_page',
5706                  'type'           => 'dropdown-pages',
5707                  'allow_addition' => true,
5708              )
5709          );
5710  
5711          /* Custom CSS */
5712          $section_description  = '<p>';
5713          $section_description .= __( 'Add your own CSS code here to customize the appearance and layout of your site.' );
5714          $section_description .= sprintf(
5715              ' <a href="%1$s" class="external-link" target="_blank">%2$s<span class="screen-reader-text"> %3$s</span></a>',
5716              esc_url( __( 'https://developer.wordpress.org/advanced-administration/wordpress/css/' ) ),
5717              __( 'Learn more about CSS' ),
5718              /* translators: Hidden accessibility text. */
5719              __( '(opens in a new tab)' )
5720          );
5721          $section_description .= '</p>';
5722  
5723          $section_description .= '<p id="editor-keyboard-trap-help-1">' . __( 'When using a keyboard to navigate:' ) . '</p>';
5724          $section_description .= '<ul>';
5725          $section_description .= '<li id="editor-keyboard-trap-help-2">' . __( 'In the editing area, the Tab key enters a tab character.' ) . '</li>';
5726          $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>';
5727          $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>';
5728          $section_description .= '</ul>';
5729  
5730          if ( 'false' !== wp_get_current_user()->syntax_highlighting ) {
5731              $section_description .= '<p>';
5732              $section_description .= sprintf(
5733                  /* translators: 1: Link to user profile, 2: Additional link attributes, 3: Accessibility text. */
5734                  __( 'The edit field automatically highlights code syntax. You can disable this in your <a href="%1$s" %2$s>user profile%3$s</a> to work in plain text mode.' ),
5735                  esc_url( get_edit_profile_url() ),
5736                  'class="external-link" target="_blank"',
5737                  sprintf(
5738                      '<span class="screen-reader-text"> %s</span>',
5739                      /* translators: Hidden accessibility text. */
5740                      __( '(opens in a new tab)' )
5741                  )
5742              );
5743              $section_description .= '</p>';
5744          }
5745  
5746          $section_description .= '<p class="section-description-buttons">';
5747          $section_description .= '<button type="button" class="button-link section-description-close">' . __( 'Close' ) . '</button>';
5748          $section_description .= '</p>';
5749  
5750          $this->add_section(
5751              'custom_css',
5752              array(
5753                  'title'              => __( 'Additional CSS' ),
5754                  'priority'           => 200,
5755                  'description_hidden' => true,
5756                  'description'        => $section_description,
5757              )
5758          );
5759  
5760          $custom_css_setting = new WP_Customize_Custom_CSS_Setting(
5761              $this,
5762              sprintf( 'custom_css[%s]', get_stylesheet() ),
5763              array(
5764                  'capability' => 'edit_css',
5765                  'default'    => '',
5766              )
5767          );
5768          $this->add_setting( $custom_css_setting );
5769  
5770          $this->add_control(
5771              new WP_Customize_Code_Editor_Control(
5772                  $this,
5773                  'custom_css',
5774                  array(
5775                      'label'       => __( 'CSS code' ),
5776                      'section'     => 'custom_css',
5777                      'settings'    => array( 'default' => $custom_css_setting->id ),
5778                      'code_type'   => 'text/css',
5779                      'input_attrs' => array(
5780                          'aria-describedby' => 'editor-keyboard-trap-help-1 editor-keyboard-trap-help-2 editor-keyboard-trap-help-3 editor-keyboard-trap-help-4',
5781                      ),
5782                  )
5783              )
5784          );
5785      }
5786  
5787      /**
5788       * Returns whether there are published pages.
5789       *
5790       * Used as active callback for static front page section and controls.
5791       *
5792       * @since 4.7.0
5793       *
5794       * @return bool Whether there are published (or to be published) pages.
5795       */
5796  	public function has_published_pages() {
5797  
5798          $setting = $this->get_setting( 'nav_menus_created_posts' );
5799          if ( $setting ) {
5800              foreach ( $setting->value() as $post_id ) {
5801                  if ( 'page' === get_post_type( $post_id ) ) {
5802                      return true;
5803                  }
5804              }
5805          }
5806  
5807          return 0 !== count(
5808              get_pages(
5809                  array(
5810                      'number'       => 1,
5811                      'hierarchical' => 0,
5812                  )
5813              )
5814          );
5815      }
5816  
5817      /**
5818       * Adds settings from the POST data that were not added with code, e.g. dynamically-created settings for Widgets
5819       *
5820       * @since 4.2.0
5821       *
5822       * @see add_dynamic_settings()
5823       */
5824  	public function register_dynamic_settings() {
5825          $setting_ids = array_keys( $this->unsanitized_post_values() );
5826          $this->add_dynamic_settings( $setting_ids );
5827      }
5828  
5829      /**
5830       * Loads themes into the theme browsing/installation UI.
5831       *
5832       * @since 4.9.0
5833       *
5834       * @return never
5835       */
5836  	public function handle_load_themes_request() {
5837          check_ajax_referer( 'switch_themes', 'nonce' );
5838  
5839          if ( ! current_user_can( 'switch_themes' ) ) {
5840              wp_die( -1 );
5841          }
5842  
5843          if ( empty( $_POST['theme_action'] ) ) {
5844              wp_send_json_error( 'missing_theme_action' );
5845          }
5846          $theme_action = sanitize_key( $_POST['theme_action'] );
5847          $themes       = array();
5848          $args         = array();
5849  
5850          // Define query filters based on user input.
5851          if ( ! array_key_exists( 'search', $_POST ) ) {
5852              $args['search'] = '';
5853          } else {
5854              $args['search'] = sanitize_text_field( wp_unslash( $_POST['search'] ) );
5855          }
5856  
5857          if ( ! array_key_exists( 'tags', $_POST ) ) {
5858              $args['tag'] = '';
5859          } else {
5860              $args['tag'] = array_map( 'sanitize_text_field', wp_unslash( (array) $_POST['tags'] ) );
5861          }
5862  
5863          if ( ! array_key_exists( 'page', $_POST ) ) {
5864              $args['page'] = 1;
5865          } else {
5866              $args['page'] = absint( $_POST['page'] );
5867          }
5868  
5869          require_once  ABSPATH . 'wp-admin/includes/theme.php';
5870  
5871          if ( 'installed' === $theme_action ) {
5872  
5873              // Load all installed themes from wp_prepare_themes_for_js().
5874              $themes = array( 'themes' => array() );
5875              foreach ( wp_prepare_themes_for_js() as $theme ) {
5876                  $theme['type']      = 'installed';
5877                  $theme['active']    = ( isset( $_POST['customized_theme'] ) && $_POST['customized_theme'] === $theme['id'] );
5878                  $themes['themes'][] = $theme;
5879              }
5880          } elseif ( 'wporg' === $theme_action ) {
5881  
5882              // Load WordPress.org themes from the .org API and normalize data to match installed theme objects.
5883              if ( ! current_user_can( 'install_themes' ) ) {
5884                  wp_die( -1 );
5885              }
5886  
5887              // Arguments for all queries.
5888              $wporg_args = array(
5889                  'per_page' => 100,
5890                  'fields'   => array(
5891                      'reviews_url' => true, // Explicitly request the reviews URL to be linked from the customizer.
5892                  ),
5893              );
5894  
5895              $args = array_merge( $wporg_args, $args );
5896  
5897              if ( '' === $args['search'] && '' === $args['tag'] ) {
5898                  $args['browse'] = 'new'; // Sort by latest themes by default.
5899              }
5900  
5901              // Load themes from the .org API.
5902              $themes = themes_api( 'query_themes', $args );
5903              if ( is_wp_error( $themes ) ) {
5904                  wp_send_json_error();
5905              }
5906  
5907              // This list matches the allowed tags in wp-admin/includes/theme-install.php.
5908              $themes_allowedtags                     = array_fill_keys(
5909                  array( 'a', 'abbr', 'acronym', 'code', 'pre', 'em', 'strong', 'div', 'p', 'ul', 'ol', 'li', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'img' ),
5910                  array()
5911              );
5912              $themes_allowedtags['a']                = array_fill_keys( array( 'href', 'title', 'target' ), true );
5913              $themes_allowedtags['acronym']['title'] = true;
5914              $themes_allowedtags['abbr']['title']    = true;
5915              $themes_allowedtags['img']              = array_fill_keys( array( 'src', 'class', 'alt' ), true );
5916  
5917              // Prepare a list of installed themes to check against before the loop.
5918              $installed_themes = array();
5919              $wp_themes        = wp_get_themes();
5920              foreach ( $wp_themes as $theme ) {
5921                  $installed_themes[] = $theme->get_stylesheet();
5922              }
5923              $update_php = network_admin_url( 'update.php?action=install-theme' );
5924  
5925              // Set up properties for themes available on WordPress.org.
5926              foreach ( $themes->themes as &$theme ) {
5927                  $theme->install_url = add_query_arg(
5928                      array(
5929                          'theme'    => $theme->slug,
5930                          '_wpnonce' => wp_create_nonce( 'install-theme_' . $theme->slug ),
5931                      ),
5932                      $update_php
5933                  );
5934  
5935                  $theme->name        = wp_kses( $theme->name, $themes_allowedtags );
5936                  $theme->version     = wp_kses( $theme->version, $themes_allowedtags );
5937                  $theme->description = wp_kses( $theme->description, $themes_allowedtags );
5938                  $theme->stars       = wp_star_rating(
5939                      array(
5940                          'rating' => $theme->rating,
5941                          'type'   => 'percent',
5942                          'number' => $theme->num_ratings,
5943                          'echo'   => false,
5944                      )
5945                  );
5946                  $theme->num_ratings = number_format_i18n( $theme->num_ratings );
5947                  $theme->preview_url = set_url_scheme( $theme->preview_url );
5948  
5949                  // Handle themes that are already installed as installed themes.
5950                  if ( in_array( $theme->slug, $installed_themes, true ) ) {
5951                      $theme->type = 'installed';
5952                  } else {
5953                      $theme->type = $theme_action;
5954                  }
5955  
5956                  // Set active based on customized theme.
5957                  $theme->active = ( isset( $_POST['customized_theme'] ) && $_POST['customized_theme'] === $theme->slug );
5958  
5959                  // Map available theme properties to installed theme properties.
5960                  $theme->id            = $theme->slug;
5961                  $theme->screenshot    = array( $theme->screenshot_url );
5962                  $theme->authorAndUri  = wp_kses( $theme->author['display_name'], $themes_allowedtags );
5963                  $theme->compatibleWP  = is_wp_version_compatible( $theme->requires ); // phpcs:ignore WordPress.NamingConventions.ValidVariableName
5964                  $theme->compatiblePHP = is_php_version_compatible( $theme->requires_php ); // phpcs:ignore WordPress.NamingConventions.ValidVariableName
5965  
5966                  if ( isset( $theme->parent ) ) {
5967                      $theme->parent = $theme->parent['slug'];
5968                  } else {
5969                      $theme->parent = false;
5970                  }
5971                  unset( $theme->slug );
5972                  unset( $theme->screenshot_url );
5973                  unset( $theme->author );
5974              } // End foreach().
5975          } // End if().
5976  
5977          /**
5978           * Filters the theme data loaded in the customizer.
5979           *
5980           * This allows theme data to be loading from an external source,
5981           * or modification of data loaded from `wp_prepare_themes_for_js()`
5982           * or WordPress.org via `themes_api()`.
5983           *
5984           * @since 4.9.0
5985           *
5986           * @see wp_prepare_themes_for_js()
5987           * @see themes_api()
5988           * @see WP_Customize_Manager::__construct()
5989           *
5990           * @param array|stdClass       $themes  Nested array or object of theme data.
5991           * @param array                $args    List of arguments, such as page, search term, and tags to query for.
5992           * @param WP_Customize_Manager $manager Instance of Customize manager.
5993           */
5994          $themes = apply_filters( 'customize_load_themes', $themes, $args, $this );
5995  
5996          wp_send_json_success( $themes );
5997      }
5998  
5999  
6000      /**
6001       * Callback for validating the header_textcolor value.
6002       *
6003       * Accepts 'blank', and otherwise uses sanitize_hex_color_no_hash().
6004       * Returns default text color if hex color is empty.
6005       *
6006       * @since 3.4.0
6007       *
6008       * @param string $color
6009       * @return mixed
6010       */
6011  	public function _sanitize_header_textcolor( $color ) {
6012          if ( 'blank' === $color ) {
6013              return 'blank';
6014          }
6015  
6016          $color = sanitize_hex_color_no_hash( $color );
6017          if ( empty( $color ) ) {
6018              $color = get_theme_support( 'custom-header', 'default-text-color' );
6019          }
6020  
6021          return $color;
6022      }
6023  
6024      /**
6025       * Callback for validating a background setting value.
6026       *
6027       * @since 4.7.0
6028       *
6029       * @param string               $value   Repeat value.
6030       * @param WP_Customize_Setting $setting Setting.
6031       * @return string|WP_Error Background value or validation error.
6032       */
6033  	public function _sanitize_background_setting( $value, $setting ) {
6034          if ( 'background_repeat' === $setting->id ) {
6035              if ( ! in_array( $value, array( 'repeat-x', 'repeat-y', 'repeat', 'no-repeat' ), true ) ) {
6036                  return new WP_Error( 'invalid_value', __( 'Invalid value for background repeat.' ) );
6037              }
6038          } elseif ( 'background_attachment' === $setting->id ) {
6039              if ( ! in_array( $value, array( 'fixed', 'scroll' ), true ) ) {
6040                  return new WP_Error( 'invalid_value', __( 'Invalid value for background attachment.' ) );
6041              }
6042          } elseif ( 'background_position_x' === $setting->id ) {
6043              if ( ! in_array( $value, array( 'left', 'center', 'right' ), true ) ) {
6044                  return new WP_Error( 'invalid_value', __( 'Invalid value for background position X.' ) );
6045              }
6046          } elseif ( 'background_position_y' === $setting->id ) {
6047              if ( ! in_array( $value, array( 'top', 'center', 'bottom' ), true ) ) {
6048                  return new WP_Error( 'invalid_value', __( 'Invalid value for background position Y.' ) );
6049              }
6050          } elseif ( 'background_size' === $setting->id ) {
6051              if ( ! in_array( $value, array( 'auto', 'contain', 'cover' ), true ) ) {
6052                  return new WP_Error( 'invalid_value', __( 'Invalid value for background size.' ) );
6053              }
6054          } elseif ( 'background_preset' === $setting->id ) {
6055              if ( ! in_array( $value, array( 'default', 'fill', 'fit', 'repeat', 'custom' ), true ) ) {
6056                  return new WP_Error( 'invalid_value', __( 'Invalid value for background size.' ) );
6057              }
6058          } elseif ( 'background_image' === $setting->id || 'background_image_thumb' === $setting->id ) {
6059              $value = empty( $value ) ? '' : sanitize_url( $value );
6060          } else {
6061              return new WP_Error( 'unrecognized_setting', __( 'Unrecognized background setting.' ) );
6062          }
6063          return $value;
6064      }
6065  
6066      /**
6067       * Exports header video settings to facilitate selective refresh.
6068       *
6069       * @since 4.7.0
6070       *
6071       * @param array                          $response          Response.
6072       * @param WP_Customize_Selective_Refresh $selective_refresh Selective refresh component.
6073       * @param array                          $partials          Array of partials.
6074       * @return array
6075       */
6076  	public function export_header_video_settings( $response, $selective_refresh, $partials ) {
6077          if ( isset( $partials['custom_header'] ) ) {
6078              $response['custom_header_settings'] = get_header_video_settings();
6079          }
6080  
6081          return $response;
6082      }
6083  
6084      /**
6085       * Callback for validating the header_video value.
6086       *
6087       * Ensures that the selected video is less than 8MB and provides an error message.
6088       *
6089       * @since 4.7.0
6090       *
6091       * @param WP_Error $validity
6092       * @param mixed    $value
6093       * @return mixed
6094       */
6095  	public function _validate_header_video( $validity, $value ) {
6096          $video = get_attached_file( absint( $value ) );
6097          if ( $video ) {
6098              $size = filesize( $video );
6099              if ( $size > 8 * MB_IN_BYTES ) {
6100                  $validity->add(
6101                      'size_too_large',
6102                      __( '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.' )
6103                  );
6104              }
6105              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.
6106                  $validity->add(
6107                      'invalid_file_type',
6108                      sprintf(
6109                          /* translators: 1: .mp4, 2: .mov */
6110                          __( 'Only %1$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.' ),
6111                          '<code>.mp4</code>',
6112                          '<code>.mov</code>'
6113                      )
6114                  );
6115              }
6116          }
6117          return $validity;
6118      }
6119  
6120      /**
6121       * Callback for validating the external_header_video value.
6122       *
6123       * Ensures that the provided URL is supported.
6124       *
6125       * @since 4.7.0
6126       *
6127       * @param WP_Error $validity
6128       * @param mixed    $value
6129       * @return mixed
6130       */
6131  	public function _validate_external_header_video( $validity, $value ) {
6132          $video = sanitize_url( $value );
6133          if ( $video ) {
6134              if ( ! preg_match( '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#', $video ) ) {
6135                  $validity->add( 'invalid_url', __( 'Please enter a valid YouTube URL.' ) );
6136              }
6137          }
6138          return $validity;
6139      }
6140  
6141      /**
6142       * Callback for sanitizing the external_header_video value.
6143       *
6144       * @since 4.7.1
6145       *
6146       * @param string $value URL.
6147       * @return string Sanitized URL.
6148       */
6149  	public function _sanitize_external_header_video( $value ) {
6150          return sanitize_url( trim( $value ) );
6151      }
6152  
6153      /**
6154       * Callback for rendering the custom logo, used in the custom_logo partial.
6155       *
6156       * This method exists because the partial object and context data are passed
6157       * into a partial's render_callback so we cannot use get_custom_logo() as
6158       * the render_callback directly since it expects a blog ID as the first
6159       * argument.
6160       *
6161       * @see WP_Customize_Manager::register_controls()
6162       *
6163       * @since 4.5.0
6164       *
6165       * @return string Custom logo.
6166       */
6167  	public function _render_custom_logo_partial() {
6168          return get_custom_logo();
6169      }
6170  }


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