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<?php
/**
 * WordPress Customize Manager classes
 *
 * @package WordPress
 * @subpackage Customize
 * @since 3.4.0
 */

/**
 * Customize Manager class.
 *
 * Bootstraps the Customize experience on the server-side.
 *
 * Sets up the theme-switching process if a theme other than the active one is
 * being previewed and customized.
 *
 * Serves as a factory for Customize Controls and Settings, and
 * instantiates default Customize Controls and Settings.
 *
 * @since 3.4.0
 */
final class WP_Customize_Manager {
    
/**
     * An instance of the theme being previewed.
     *
     * @since 3.4.0
     * @var WP_Theme
     */
    
protected $theme;

    
/**
     * The directory name of the previously active theme (within the theme_root).
     *
     * @since 3.4.0
     * @var string
     */
    
protected $original_stylesheet;

    
/**
     * Whether this is a Customizer pageload.
     *
     * @since 3.4.0
     * @var bool
     */
    
protected $previewing false;

    
/**
     * Methods and properties dealing with managing widgets in the Customizer.
     *
     * @since 3.9.0
     * @var WP_Customize_Widgets
     */
    
public $widgets;

    
/**
     * Methods and properties dealing with managing nav menus in the Customizer.
     *
     * @since 4.3.0
     * @var WP_Customize_Nav_Menus
     */
    
public $nav_menus;

    
/**
     * Methods and properties dealing with selective refresh in the Customizer preview.
     *
     * @since 4.5.0
     * @var WP_Customize_Selective_Refresh
     */
    
public $selective_refresh;

    
/**
     * Registered instances of WP_Customize_Setting.
     *
     * @since 3.4.0
     * @var array
     */
    
protected $settings = array();

    
/**
     * Sorted top-level instances of WP_Customize_Panel and WP_Customize_Section.
     *
     * @since 4.0.0
     * @var array
     */
    
protected $containers = array();

    
/**
     * Registered instances of WP_Customize_Panel.
     *
     * @since 4.0.0
     * @var array
     */
    
protected $panels = array();

    
/**
     * List of core components.
     *
     * @since 4.5.0
     * @var array
     */
    
protected $components = array( 'widgets''nav_menus' );

    
/**
     * Registered instances of WP_Customize_Section.
     *
     * @since 3.4.0
     * @var array
     */
    
protected $sections = array();

    
/**
     * Registered instances of WP_Customize_Control.
     *
     * @since 3.4.0
     * @var array
     */
    
protected $controls = array();

    
/**
     * Panel types that may be rendered from JS templates.
     *
     * @since 4.3.0
     * @var array
     */
    
protected $registered_panel_types = array();

    
/**
     * Section types that may be rendered from JS templates.
     *
     * @since 4.3.0
     * @var array
     */
    
protected $registered_section_types = array();

    
/**
     * Control types that may be rendered from JS templates.
     *
     * @since 4.1.0
     * @var array
     */
    
protected $registered_control_types = array();

    
/**
     * Initial URL being previewed.
     *
     * @since 4.4.0
     * @var string
     */
    
protected $preview_url;

    
/**
     * URL to link the user to when closing the Customizer.
     *
     * @since 4.4.0
     * @var string
     */
    
protected $return_url;

    
/**
     * Mapping of 'panel', 'section', 'control' to the ID which should be autofocused.
     *
     * @since 4.4.0
     * @var array
     */
    
protected $autofocus = array();

    
/**
     * Messenger channel.
     *
     * @since 4.7.0
     * @var string
     */
    
protected $messenger_channel;

    
/**
     * Whether the autosave revision of the changeset should be loaded.
     *
     * @since 4.9.0
     * @var bool
     */
    
protected $autosaved false;

    
/**
     * Whether the changeset branching is allowed.
     *
     * @since 4.9.0
     * @var bool
     */
    
protected $branching true;

    
/**
     * Whether settings should be previewed.
     *
     * @since 4.9.0
     * @var bool
     */
    
protected $settings_previewed true;

    
/**
     * Whether a starter content changeset was saved.
     *
     * @since 4.9.0
     * @var bool
     */
    
protected $saved_starter_content_changeset false;

    
/**
     * Unsanitized values for Customize Settings parsed from $_POST['customized'].
     *
     * @var array
     */
    
private $_post_values;

    
/**
     * Changeset UUID.
     *
     * @since 4.7.0
     * @var string
     */
    
private $_changeset_uuid;

    
/**
     * Changeset post ID.
     *
     * @since 4.7.0
     * @var int|false
     */
    
private $_changeset_post_id;

    
/**
     * Changeset data loaded from a customize_changeset post.
     *
     * @since 4.7.0
     * @var array
     */
    
private $_changeset_data;

    
/**
     * Constructor.
     *
     * @since 3.4.0
     * @since 4.7.0 Added `$args` parameter.
     *
     * @param array $args {
     *     Args.
     *
     *     @type null|string|false $changeset_uuid     Changeset UUID, the `post_name` for the customize_changeset post containing the customized state.
     *                                                 Defaults to `null` resulting in a UUID to be immediately generated. If `false` is provided, then
     *                                                 then the changeset UUID will be determined during `after_setup_theme`: when the
     *                                                 `customize_changeset_branching` filter returns false, then the default UUID will be that
     *                                                 of the most recent `customize_changeset` post that has a status other than 'auto-draft',
     *                                                 'publish', or 'trash'. Otherwise, if changeset branching is enabled, then a random UUID will be used.
     *     @type string            $theme              Theme to be previewed (for theme switch). Defaults to customize_theme or theme query params.
     *     @type string            $messenger_channel  Messenger channel. Defaults to customize_messenger_channel query param.
     *     @type bool              $settings_previewed If settings should be previewed. Defaults to true.
     *     @type bool              $branching          If changeset branching is allowed; otherwise, changesets are linear. Defaults to true.
     *     @type bool              $autosaved          If data from a changeset's autosaved revision should be loaded if it exists. Defaults to false.
     * }
     */
    
public function __construct$args = array() ) {

        
$args array_merge(
            
array_fill_keys( array( 'changeset_uuid''theme''messenger_channel''settings_previewed''autosaved''branching' ), null ),
            
$args
        
);

        
// Note that the UUID format will be validated in the setup_theme() method.
        
if ( ! isset( $args['changeset_uuid'] ) ) {
            
$args['changeset_uuid'] = wp_generate_uuid4();
        }

        
// The theme and messenger_channel should be supplied via $args, but they are also looked at in the $_REQUEST global here for back-compat.
        
if ( ! isset( $args['theme'] ) ) {
            if ( isset( 
$_REQUEST['customize_theme'] ) ) {
                
$args['theme'] = wp_unslash$_REQUEST['customize_theme'] );
            } elseif ( isset( 
$_REQUEST['theme'] ) ) { // Deprecated.
                
$args['theme'] = wp_unslash$_REQUEST['theme'] );
            }
        }
        if ( ! isset( 
$args['messenger_channel'] ) && isset( $_REQUEST['customize_messenger_channel'] ) ) {
            
$args['messenger_channel'] = sanitize_keywp_unslash$_REQUEST['customize_messenger_channel'] ) );
        }

        
$this->original_stylesheet get_stylesheet();
        
$this->theme               wp_get_theme=== validate_file$args['theme'] ) ? $args['theme'] : null );
        
$this->messenger_channel   $args['messenger_channel'];
        
$this->_changeset_uuid     $args['changeset_uuid'];

        foreach ( array( 
'settings_previewed''autosaved''branching' ) as $key ) {
            if ( isset( 
$args$key ] ) ) {
                
$this->$key = (bool) $args$key ];
            }
        }

        require_once( 
ABSPATH WPINC '/class-wp-customize-setting.php' );
        require_once( 
ABSPATH WPINC '/class-wp-customize-panel.php' );
        require_once( 
ABSPATH WPINC '/class-wp-customize-section.php' );
        require_once( 
ABSPATH WPINC '/class-wp-customize-control.php' );

        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-color-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-media-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-upload-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-image-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-background-image-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-background-position-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-cropped-image-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-site-icon-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-header-image-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-theme-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-code-editor-control.php' );
        
// require_once( ABSPATH . WPINC . '/customize/class-wp-widget-area-customize-control.php' );
        // require_once( ABSPATH . WPINC . '/customize/class-wp-widget-form-customize-control.php' );
        
require_once( ABSPATH WPINC '/customize/class-wp-customize-nav-menu-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-nav-menu-item-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-nav-menu-location-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-nav-menu-name-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-nav-menu-locations-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-nav-menu-auto-add-control.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-new-menu-control.php' ); // @todo Remove in a future release. See #42364.

        
require_once( ABSPATH WPINC '/customize/class-wp-customize-nav-menus-panel.php' );

        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-themes-panel.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-themes-section.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-sidebar-section.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-nav-menu-section.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-new-menu-section.php' ); // @todo Remove in a future release. See #42364.

        
require_once( ABSPATH WPINC '/customize/class-wp-customize-custom-css-setting.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-filter-setting.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-header-image-setting.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-background-image-setting.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-nav-menu-item-setting.php' );
        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-nav-menu-setting.php' );

        
/**
         * Filters the core Customizer components to load.
         *
         * This allows Core components to be excluded from being instantiated by
         * filtering them out of the array. Note that this filter generally runs
         * during the {@see 'plugins_loaded'} action, so it cannot be added
         * in a theme.
         *
         * @since 4.4.0
         *
         * @see WP_Customize_Manager::__construct()
         *
         * @param string[]             $components Array of core components to load.
         * @param WP_Customize_Manager $this       WP_Customize_Manager instance.
         */
        
$components apply_filters'customize_loaded_components'$this->components$this );

        require_once( 
ABSPATH WPINC '/customize/class-wp-customize-selective-refresh.php' );
        
$this->selective_refresh = new WP_Customize_Selective_Refresh$this );

        
// if ( in_array( 'widgets', $components, true ) ) {
        //     require_once( ABSPATH . WPINC . '/class-wp-customize-widgets.php' );
        //     $this->widgets = new WP_Customize_Widgets( $this );
        // }

        
if ( in_array'nav_menus'$componentstrue ) ) {
            require_once( 
ABSPATH WPINC '/class-wp-customize-nav-menus.php' );
            
$this->nav_menus = new WP_Customize_Nav_Menus$this );
        }

        
add_action'setup_theme', array( $this'setup_theme' ) );
        
add_action'wp_loaded', array( $this'wp_loaded' ) );

        
// Do not spawn cron (especially the alternate cron) while running the Customizer.
        
remove_action'init''wp_cron' );

        
// Do not run update checks when rendering the controls.
        
remove_action'admin_init''_maybe_update_core' );
        
remove_action'admin_init''_maybe_update_plugins' );
        
remove_action'admin_init''_maybe_update_themes' );

        
add_action'wp_ajax_customize_save', array( $this'save' ) );
        
add_action'wp_ajax_customize_trash', array( $this'handle_changeset_trash_request' ) );
        
add_action'wp_ajax_customize_refresh_nonces', array( $this'refresh_nonces' ) );
        
add_action'wp_ajax_customize_load_themes', array( $this'handle_load_themes_request' ) );
        
add_filter'heartbeat_settings', array( $this'add_customize_screen_to_heartbeat_settings' ) );
        
add_filter'heartbeat_received', array( $this'check_changeset_lock_with_heartbeat' ), 10);
        
add_action'wp_ajax_customize_override_changeset_lock', array( $this'handle_override_changeset_lock_request' ) );
        
add_action'wp_ajax_customize_dismiss_autosave_or_lock', array( $this'handle_dismiss_autosave_or_lock_request' ) );

        
add_action'customize_register', array( $this'register_controls' ) );
        
add_action'customize_register', array( $this'register_dynamic_settings' ), 11 ); // allow code to create settings first
        
add_action'customize_controls_init', array( $this'prepare_controls' ) );
        
add_action'customize_controls_enqueue_scripts', array( $this'enqueue_control_scripts' ) );

        
// Render Common, Panel, Section, and Control templates.
        
add_action'customize_controls_print_footer_scripts', array( $this'render_panel_templates' ), );
        
add_action'customize_controls_print_footer_scripts', array( $this'render_section_templates' ), );
        
add_action'customize_controls_print_footer_scripts', array( $this'render_control_templates' ), );

        
// Export header video settings with the partial response.
        
add_filter'customize_render_partials_response', array( $this'export_header_video_settings' ), 10);

        
// Export the settings to JS via the _wpCustomizeSettings variable.
        
add_action'customize_controls_print_footer_scripts', array( $this'customize_pane_settings' ), 1000 );

        
// Add theme update notices.
        
if ( current_user_can'install_themes' ) || current_user_can'update_themes' ) ) {
            require_once 
ABSPATH '/site-admin/includes/update.php';
            
add_action'customize_controls_print_footer_scripts''wp_print_admin_notice_templates' );
        }
    }

    
/**
     * Return true if it's an Ajax request.
     *
     * @since 3.4.0
     * @since 4.2.0 Added `$action` param.
     *
     * @param string|null $action Whether the supplied Ajax action is being run.
     * @return bool True if it's an Ajax request, false otherwise.
     */
    
public function doing_ajax$action null ) {
        if ( ! 
wp_doing_ajax() ) {
            return 
false;
        }

        if ( ! 
$action ) {
            return 
true;
        } else {
            
/*
             * Note: we can't just use doing_action( "wp_ajax_{$action}" ) because we need
             * to check before admin-ajax.php gets to that point.
             */
            
return isset( $_REQUEST['action'] ) && wp_unslash$_REQUEST['action'] ) === $action;
        }
    }

    
/**
     * Custom wp_die wrapper. Returns either the standard message for UI
     * or the Ajax message.
     *
     * @since 3.4.0
     *
     * @param mixed $ajax_message Ajax return
     * @param mixed $message UI message
     */
    
protected function wp_die$ajax_message$message null ) {
        if ( 
$this->doing_ajax() ) {
            
wp_die$ajax_message );
        }

        if ( ! 
$message ) {
            
$message __'Something went wrong.' );
        }

        if ( 
$this->messenger_channel ) {
            
ob_start();
            
wp_enqueue_scripts();
            
wp_print_scripts( array( 'customize-base' ) );

            
$settings = array(
                
'messengerArgs' => array(
                    
'channel' => $this->messenger_channel,
                    
'url'     => wp_customize_url(),
                ),
                
'error'         => $ajax_message,
            );
            
?>
            <script>
            ( function( api, settings ) {
                var preview = new api.Messenger( settings.messengerArgs );
                preview.send( 'iframe-loading-error', settings.error );
            } )( wp.customize, <?php echo wp_json_encode$settings ); ?> );
            </script>
            <?php
            $message 
.= ob_get_clean();
        }

        
wp_die$message );
    }

    
/**
     * Return the Ajax wp_die() handler if it's a customized request.
     *
     * @since 3.4.0
     * @deprecated 4.7.0
     *
     * @return callable Die handler.
     */
    
public function wp_die_handler() {
        
_deprecated_function__METHOD__'4.7.0' );

        if ( 
$this->doing_ajax() || isset( $_POST['customized'] ) ) {
            return 
'_ajax_wp_die_handler';
        }

        return 
'_default_wp_die_handler';
    }

    
/**
     * Start preview and customize theme.
     *
     * Check if customize query variable exist. Init filters to filter the current theme.
     *
     * @since 3.4.0
     *
     * @global string $pagenow
     */
    
public function setup_theme() {
        global 
$pagenow;

        
// Check permissions for customize.php access since this method is called before customize.php can run any code,
        
if ( 'customize.php' === $pagenow && ! current_user_can'customize' ) ) {
            if ( ! 
is_user_logged_in() ) {
                
auth_redirect();
            } else {
                
wp_die(
                    
'<h1>' __'You need a higher level of permission.' ) . '</h1>' .
                    
'<p>' __'Sorry, you are not allowed to customize this site.' ) . '</p>',
                    
403
                
);
            }
            return;
        }

        
// If a changeset was provided is invalid.
        
if ( isset( $this->_changeset_uuid ) && false !== $this->_changeset_uuid && ! wp_is_uuid$this->_changeset_uuid ) ) {
            
$this->wp_die( -1__'Invalid changeset UUID' ) );
        }

        
/*
         * Clear incoming post data if the user lacks a CSRF token (nonce). Note that the customizer
         * application will inject the customize_preview_nonce query parameter into all Ajax requests.
         * For similar behavior elsewhere in WordPress, see rest_cookie_check_errors() which logs out
         * a user when a valid nonce isn't present.
         */
        
$has_post_data_nonce = (
            
check_ajax_referer'preview-customize_' $this->get_stylesheet(), 'nonce'false )
            ||
            
check_ajax_referer'save-customize_' $this->get_stylesheet(), 'nonce'false )
            ||
            
check_ajax_referer'preview-customize_' $this->get_stylesheet(), 'customize_preview_nonce'false )
        );
        if ( ! 
current_user_can'customize' ) || ! $has_post_data_nonce ) {
            unset( 
$_POST['customized'] );
            unset( 
$_REQUEST['customized'] );
        }

        
/*
         * If unauthenticated then require a valid changeset UUID to load the preview.
         * In this way, the UUID serves as a secret key. If the messenger channel is present,
         * then send unauthenticated code to prompt re-auth.
         */
        
if ( ! current_user_can'customize' ) && ! $this->changeset_post_id() ) {
            
$this->wp_die$this->messenger_channel : -1__'Non-existent changeset UUID.' ) );
        }

        if ( ! 
headers_sent() ) {
            
send_origin_headers();
        }

        
// Hide the admin bar if we're embedded in the customizer iframe.
        
if ( $this->messenger_channel ) {
            
show_admin_barfalse );
        }

        if ( 
$this->is_theme_active() ) {
            
// Once the theme is loaded, we'll validate it.
            
add_action'after_setup_theme', array( $this'after_setup_theme' ) );
        } else {
            
// If the requested theme is not the active theme and the user doesn't have the
            // switch_themes cap, bail.
            
if ( ! current_user_can'switch_themes' ) ) {
                
$this->wp_die( -1__'Sorry, you are not allowed to edit theme options on this site.' ) );
            }

            
// If the theme has errors while loading, bail.
            
if ( $this->theme()->errors() ) {
                
$this->wp_die( -1$this->theme()->errors()->get_error_message() );
            }

            
// If the theme isn't allowed per multisite settings, bail.
            
if ( ! $this->theme()->is_allowed() ) {
                
$this->wp_die( -1__'The requested theme does not exist.' ) );
            }
        }

        
// Make sure changeset UUID is established immediately after the theme is loaded.
        
add_action'after_setup_theme', array( $this'establish_loaded_changeset' ), );

        
/*
         * Import theme starter content for fresh installations when landing in the customizer.
         * Import starter content at after_setup_theme:100 so that any
         * add_theme_support( 'starter-content' ) calls will have been made.
         */
        
if ( get_option'fresh_site' ) && 'customize.php' === $pagenow ) {
            
add_action'after_setup_theme', array( $this'import_theme_starter_content' ), 100 );
        }

        
$this->start_previewing_theme();
    }

    
/**
     * Establish the loaded changeset.
     *
     * This method runs right at after_setup_theme and applies the 'customize_changeset_branching' filter to determine
     * whether concurrent changesets are allowed. Then if the Customizer is not initialized with a `changeset_uuid` param,
     * this method will determine which UUID should be used. If changeset branching is disabled, then the most saved
     * changeset will be loaded by default. Otherwise, if there are no existing saved changesets or if changeset branching is
     * enabled, then a new UUID will be generated.
     *
     * @since 4.9.0
     * @global string $pagenow
     */
    
public function establish_loaded_changeset() {
        global 
$pagenow;

        if ( empty( 
$this->_changeset_uuid ) ) {
            
$changeset_uuid null;

            if ( ! 
$this->branching() && $this->is_theme_active() ) {
                
$unpublished_changeset_posts $this->get_changeset_posts(
                    array(
                        
'post_status'               => array_diffget_post_stati(), array( 'auto-draft''publish''trash''inherit''private' ) ),
                        
'exclude_restore_dismissed' => false,
                        
'author'                    => 'any',
                        
'posts_per_page'            => 1,
                        
'order'                     => 'DESC',
                        
'orderby'                   => 'date',
                    )
                );
                
$unpublished_changeset_post  array_shift$unpublished_changeset_posts );
                if ( ! empty( 
$unpublished_changeset_post ) && wp_is_uuid$unpublished_changeset_post->post_name ) ) {
                    
$changeset_uuid $unpublished_changeset_post->post_name;
                }
            }

            
// If no changeset UUID has been set yet, then generate a new one.
            
if ( empty( $changeset_uuid ) ) {
                
$changeset_uuid wp_generate_uuid4();
            }

            
$this->_changeset_uuid $changeset_uuid;
        }

        if ( 
is_admin() && 'customize.php' === $pagenow ) {
            
$this->set_changeset_lock$this->changeset_post_id() );
        }
    }

    
/**
     * Callback to validate a theme once it is loaded
     *
     * @since 3.4.0
     */
    
public function after_setup_theme() {
        
$doing_ajax_or_is_customized = ( $this->doing_ajax() || isset( $_POST['customized'] ) );
        if ( ! 
$doing_ajax_or_is_customized && ! validate_current_theme() ) {
            
wp_redirect'themes.php?broken=true' );
            exit;
        }
    }

    
/**
     * If the theme to be previewed isn't the active theme, add filter callbacks
     * to swap it out at runtime.
     *
     * @since 3.4.0
     */
    
public function start_previewing_theme() {
        
// Bail if we're already previewing.
        
if ( $this->is_preview() ) {
            return;
        }

        
$this->previewing true;

        if ( ! 
$this->is_theme_active() ) {
            
add_filter'template', array( $this'get_template' ) );
            
add_filter'stylesheet', array( $this'get_stylesheet' ) );
            
add_filter'pre_option_current_theme', array( $this'current_theme' ) );

            
// @link: https://core.trac.wordpress.org/ticket/20027
            
add_filter'pre_option_stylesheet', array( $this'get_stylesheet' ) );
            
add_filter'pre_option_template', array( $this'get_template' ) );

            
// Handle custom theme roots.
            
add_filter'pre_option_stylesheet_root', array( $this'get_stylesheet_root' ) );
            
add_filter'pre_option_template_root', array( $this'get_template_root' ) );
        }

        
/**
         * Fires once the Customizer theme preview has started.
         *
         * @since 3.4.0
         *
         * @param WP_Customize_Manager $this WP_Customize_Manager instance.
         */
        
do_action'start_previewing_theme'$this );
    }

    
/**
     * Stop previewing the selected theme.
     *
     * Removes filters to change the current theme.
     *
     * @since 3.4.0
     */
    
public function stop_previewing_theme() {
        if ( ! 
$this->is_preview() ) {
            return;
        }

        
$this->previewing false;

        if ( ! 
$this->is_theme_active() ) {
            
remove_filter'template', array( $this'get_template' ) );
            
remove_filter'stylesheet', array( $this'get_stylesheet' ) );
            
remove_filter'pre_option_current_theme', array( $this'current_theme' ) );

            
// @link: https://core.trac.wordpress.org/ticket/20027
            
remove_filter'pre_option_stylesheet', array( $this'get_stylesheet' ) );
            
remove_filter'pre_option_template', array( $this'get_template' ) );

            
// Handle custom theme roots.
            
remove_filter'pre_option_stylesheet_root', array( $this'get_stylesheet_root' ) );
            
remove_filter'pre_option_template_root', array( $this'get_template_root' ) );
        }

        
/**
         * Fires once the Customizer theme preview has stopped.
         *
         * @since 3.4.0
         *
         * @param WP_Customize_Manager $this WP_Customize_Manager instance.
         */
        
do_action'stop_previewing_theme'$this );
    }

    
/**
     * Gets whether settings are or will be previewed.
     *
     * @since 4.9.0
     * @see WP_Customize_Setting::preview()
     *
     * @return bool
     */
    
public function settings_previewed() {
        return 
$this->settings_previewed;
    }

    
/**
     * Gets whether data from a changeset's autosaved revision should be loaded if it exists.
     *
     * @since 4.9.0
     * @see WP_Customize_Manager::changeset_data()
     *
     * @return bool Is using autosaved changeset revision.
     */
    
public function autosaved() {
        return 
$this->autosaved;
    }

    
/**
     * Whether the changeset branching is allowed.
     *
     * @since 4.9.0
     * @see WP_Customize_Manager::establish_loaded_changeset()
     *
     * @return bool Is changeset branching.
     */
    
public function branching() {

        
/**
         * Filters whether or not changeset branching is allowed.
         *
         * By default in core, when changeset branching is not allowed, changesets will operate
         * linearly in that only one saved changeset will exist at a time (with a 'draft' or
         * 'future' status). This makes the Customizer operate in a way that is similar to going to
         * "edit" to one existing post: all users will be making changes to the same post, and autosave
         * revisions will be made for that post.
         *
         * By contrast, when changeset branching is allowed, then the model is like users going
         * to "add new" for a page and each user makes changes independently of each other since
         * they are all operating on their own separate pages, each getting their own separate
         * initial auto-drafts and then once initially saved, autosave revisions on top of that
         * user's specific post.
         *
         * Since linear changesets are deemed to be more suitable for the majority of WordPress users,
         * they are the default. For WordPress sites that have heavy site management in the Customizer
         * by multiple users then branching changesets should be enabled by means of this filter.
         *
         * @since 4.9.0
         *
         * @param bool                 $allow_branching Whether branching is allowed. If `false`, the default,
         *                                              then only one saved changeset exists at a time.
         * @param WP_Customize_Manager $wp_customize    Manager instance.
         */
        
$this->branching apply_filters'customize_changeset_branching'$this->branching$this );

        return 
$this->branching;
    }

    
/**
     * Get the changeset UUID.
     *
     * @since 4.7.0
     * @see WP_Customize_Manager::establish_loaded_changeset()
     *
     * @return string UUID.
     */
    
public function changeset_uuid() {
        if ( empty( 
$this->_changeset_uuid ) ) {
            
$this->establish_loaded_changeset();
        }
        return 
$this->_changeset_uuid;
    }

    
/**
     * Get the theme being customized.
     *
     * @since 3.4.0
     *
     * @return WP_Theme
     */
    
public function theme() {
        if ( ! 
$this->theme ) {
            
$this->theme wp_get_theme();
        }
        return 
$this->theme;
    }

    
/**
     * Get the registered settings.
     *
     * @since 3.4.0
     *
     * @return array
     */
    
public function settings() {
        return 
$this->settings;
    }

    
/**
     * Get the registered controls.
     *
     * @since 3.4.0
     *
     * @return array
     */
    
public function controls() {
        return 
$this->controls;
    }

    
/**
     * Get the registered containers.
     *
     * @since 4.0.0
     *
     * @return array
     */
    
public function containers() {
        return 
$this->containers;
    }

    
/**
     * Get the registered sections.
     *
     * @since 3.4.0
     *
     * @return array
     */
    
public function sections() {
        return 
$this->sections;
    }

    
/**
     * Get the registered panels.
     *
     * @since 4.0.0
     *
     * @return array Panels.
     */
    
public function panels() {
        return 
$this->panels;
    }

    
/**
     * Checks if the current theme is active.
     *
     * @since 3.4.0
     *
     * @return bool
     */
    
public function is_theme_active() {
        return 
$this->get_stylesheet() == $this->original_stylesheet;
    }

    
/**
     * Register styles/scripts and initialize the preview of each setting
     *
     * @since 3.4.0
     */
    
public function wp_loaded() {

        
// Unconditionally register core types for panels, sections, and controls in case plugin unhooks all customize_register actions.
        
$this->register_panel_type'WP_Customize_Panel' );
        
$this->register_panel_type'WP_Customize_Themes_Panel' );
        
$this->register_section_type'WP_Customize_Section' );
        
$this->register_section_type'WP_Customize_Sidebar_Section' );
        
$this->register_section_type'WP_Customize_Themes_Section' );
        
$this->register_control_type'WP_Customize_Color_Control' );
        
$this->register_control_type'WP_Customize_Media_Control' );
        
$this->register_control_type'WP_Customize_Upload_Control' );
        
$this->register_control_type'WP_Customize_Image_Control' );
        
$this->register_control_type'WP_Customize_Background_Image_Control' );
        
$this->register_control_type'WP_Customize_Background_Position_Control' );
        
$this->register_control_type'WP_Customize_Cropped_Image_Control' );
        
$this->register_control_type'WP_Customize_Site_Icon_Control' );
        
$this->register_control_type'WP_Customize_Theme_Control' );
        
$this->register_control_type'WP_Customize_Code_Editor_Control' );
        
$this->register_control_type'WP_Customize_Date_Time_Control' );

        
/**
         * Fires once WordPress has loaded, allowing scripts and styles to be initialized.
         *
         * @since 3.4.0
         *
         * @param WP_Customize_Manager $this WP_Customize_Manager instance.
         */
        
do_action'customize_register'$this );

        if ( 
$this->settings_previewed() ) {
            foreach ( 
$this->settings as $setting ) {
                
$setting->preview();
            }
        }

        if ( 
$this->is_preview() && ! is_admin() ) {
            
$this->customize_preview_init();
        }
    }

    
/**
     * Prevents Ajax requests from following redirects when previewing a theme
     * by issuing a 200 response instead of a 30x.
     *
     * Instead, the JS will sniff out the location header.
     *
     * @since 3.4.0
     * @deprecated 4.7.0
     *
     * @param int $status Status.
     * @return int
     */
    
public function wp_redirect_status$status ) {
        
_deprecated_function__FUNCTION__'4.7.0' );

        if ( 
$this->is_preview() && ! is_admin() ) {
            return 
200;
        }

        return 
$status;
    }

    
/**
     * Find the changeset post ID for a given changeset UUID.
     *
     * @since 4.7.0
     *
     * @param string $uuid Changeset UUID.
     * @return int|null Returns post ID on success and null on failure.
     */
    
public function find_changeset_post_id$uuid ) {
        
$cache_group       'customize_changeset_post';
        
$changeset_post_id wp_cache_get$uuid$cache_group );
        if ( 
$changeset_post_id && 'customize_changeset' === get_post_type$changeset_post_id ) ) {
            return 
$changeset_post_id;
        }

        
$changeset_post_query = new WP_Query(
            array(
                
'post_type'              => 'customize_changeset',
                
'post_status'            => get_post_stati(),
                
'name'                   => $uuid,
                
'posts_per_page'         => 1,
                
'no_found_rows'          => true,
                
'cache_results'          => true,
                
'update_post_meta_cache' => false,
                
'update_post_term_cache' => false,
                
'lazy_load_term_meta'    => false,
            )
        );
        if ( ! empty( 
$changeset_post_query->posts ) ) {
            
// Note: 'fields'=>'ids' is not being used in order to cache the post object as it will be needed.
            
$changeset_post_id $changeset_post_query->posts[0]->ID;
            
wp_cache_set$uuid$changeset_post_id$cache_group );
            return 
$changeset_post_id;
        }

        return 
null;
    }

    
/**
     * Get changeset posts.
     *
     * @since 4.9.0
     *
     * @param array $args {
     *     Args to pass into `get_posts()` to query changesets.
     *
     *     @type int    $posts_per_page             Number of posts to return. Defaults to -1 (all posts).
     *     @type int    $author                     Post author. Defaults to current user.
     *     @type string $post_status                Status of changeset. Defaults to 'auto-draft'.
     *     @type bool   $exclude_restore_dismissed  Whether to exclude changeset auto-drafts that have been dismissed. Defaults to true.
     * }
     * @return WP_Post[] Auto-draft changesets.
     */
    
protected function get_changeset_posts$args = array() ) {
        
$default_args = array(
            
'exclude_restore_dismissed' => true,
            
'posts_per_page'            => -1,
            
'post_type'                 => 'customize_changeset',
            
'post_status'               => 'auto-draft',
            
'order'                     => 'DESC',
            
'orderby'                   => 'date',
            
'no_found_rows'             => true,
            
'cache_results'             => true,
            
'update_post_meta_cache'    => false,
            
'update_post_term_cache'    => false,
            
'lazy_load_term_meta'       => false,
        );
        if ( 
get_current_user_id() ) {
            
$default_args['author'] = get_current_user_id();
        }
        
$args array_merge$default_args$args );

        if ( ! empty( 
$args['exclude_restore_dismissed'] ) ) {
            unset( 
$args['exclude_restore_dismissed'] );
            
$args['meta_query'] = array(
                array(
                    
'key'     => '_customize_restore_dismissed',
                    
'compare' => 'NOT EXISTS',
                ),
            );
        }

        return 
get_posts$args );
    }

    
/**
     * Dismiss all of the current user's auto-drafts (other than the present one).
     *
     * @since 4.9.0
     * @return int The number of auto-drafts that were dismissed.
     */
    
protected function dismiss_user_auto_draft_changesets() {
        
$changeset_autodraft_posts $this->get_changeset_posts(
            array(
                
'post_status'               => 'auto-draft',
                
'exclude_restore_dismissed' => true,
                
'posts_per_page'            => -1,
            )
        );
        
$dismissed                 0;
        foreach ( 
$changeset_autodraft_posts as $autosave_autodraft_post ) {
            if ( 
$autosave_autodraft_post->ID === $this->changeset_post_id() ) {
                continue;
            }
            if ( 
update_post_meta$autosave_autodraft_post->ID'_customize_restore_dismissed'true ) ) {
                
$dismissed++;
            }
        }
        return 
$dismissed;
    }

    
/**
     * Get the changeset post id for the loaded changeset.
     *
     * @since 4.7.0
     *
     * @return int|null Post ID on success or null if there is no post yet saved.
     */
    
public function changeset_post_id() {
        if ( ! isset( 
$this->_changeset_post_id ) ) {
            
$post_id $this->find_changeset_post_id$this->changeset_uuid() );
            if ( ! 
$post_id ) {
                
$post_id false;
            }
            
$this->_changeset_post_id $post_id;
        }
        if ( 
false === $this->_changeset_post_id ) {
            return 
null;
        }
        return 
$this->_changeset_post_id;
    }

    
/**
     * Get the data stored in a changeset post.
     *
     * @since 4.7.0
     *
     * @param int $post_id Changeset post ID.
     * @return array|WP_Error Changeset data or WP_Error on error.
     */
    
protected function get_changeset_post_data$post_id ) {
        if ( ! 
$post_id ) {
            return new 
WP_Error'empty_post_id' );
        }
        
$changeset_post get_post$post_id );
        if ( ! 
$changeset_post ) {
            return new 
WP_Error'missing_post' );
        }
        if ( 
'revision' === $changeset_post->post_type ) {
            if ( 
'customize_changeset' !== get_post_type$changeset_post->post_parent ) ) {
                return new 
WP_Error'wrong_post_type' );
            }
        } elseif ( 
'customize_changeset' !== $changeset_post->post_type ) {
            return new 
WP_Error'wrong_post_type' );
        }
        
$changeset_data json_decode$changeset_post->post_contenttrue );
        if ( 
function_exists'json_last_error' ) && json_last_error() ) {
            return new 
WP_Error'json_parse_error'''json_last_error() );
        }
        if ( ! 
is_array$changeset_data ) ) {
            return new 
WP_Error'expected_array' );
        }
        return 
$changeset_data;
    }

    
/**
     * Get changeset data.
     *
     * @since 4.7.0
     * @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.
     *
     * @return array Changeset data.
     */
    
public function changeset_data() {
        if ( isset( 
$this->_changeset_data ) ) {
            return 
$this->_changeset_data;
        }
        
$changeset_post_id $this->changeset_post_id();
        if ( ! 
$changeset_post_id ) {
            
$this->_changeset_data = array();
        } else {
            if ( 
$this->autosaved() && is_user_logged_in() ) {
                
$autosave_post wp_get_post_autosave$changeset_post_idget_current_user_id() );
                if ( 
$autosave_post ) {
                    
$data $this->get_changeset_post_data$autosave_post->ID );
                    if ( ! 
is_wp_error$data ) ) {
                        
$this->_changeset_data $data;
                    }
                }
            }

            
// Load data from the changeset if it was not loaded from an autosave.
            
if ( ! isset( $this->_changeset_data ) ) {
                
$data $this->get_changeset_post_data$changeset_post_id );
                if ( ! 
is_wp_error$data ) ) {
                    
$this->_changeset_data $data;
                } else {
                    
$this->_changeset_data = array();
                }
            }
        }
        return 
$this->_changeset_data;
    }

    
/**
     * Starter content setting IDs.
     *
     * @since 4.7.0
     * @var array
     */
    
protected $pending_starter_content_settings_ids = array();

    
/**
     * Import theme starter content into the customized state.
     *
     * @since 4.7.0
     *
     * @param array $starter_content Starter content. Defaults to `get_theme_starter_content()`.
     */
    
function import_theme_starter_content$starter_content = array() ) {
        if ( empty( 
$starter_content ) ) {
            
$starter_content get_theme_starter_content();
        }

        
$changeset_data = array();
        if ( 
$this->changeset_post_id() ) {
            
/*
             * Don't re-import starter content into a changeset saved persistently.
             * This will need to be revisited in the future once theme switching
             * is allowed with drafted/scheduled changesets, since switching to
             * another theme could result in more starter content being applied.
             * However, when doing an explicit save it is currently possible for
             * nav menus and nav menu items specifically to lose their starter_content
             * flags, thus resulting in duplicates being created since they fail
             * to get re-used. See #40146.
             */
            
if ( 'auto-draft' !== get_post_status$this->changeset_post_id() ) ) {
                return;
            }

            
$changeset_data $this->get_changeset_post_data$this->changeset_post_id() );
        }

        
$sidebars_widgets = isset( $starter_content['widgets'] ) && ! empty( $this->widgets ) ? $starter_content['widgets'] : array();
        
$attachments      = isset( $starter_content['attachments'] ) && ! empty( $this->nav_menus ) ? $starter_content['attachments'] : array();
        
$posts            = isset( $starter_content['posts'] ) && ! empty( $this->nav_menus ) ? $starter_content['posts'] : array();
        
$options          = isset( $starter_content['options'] ) ? $starter_content['options'] : array();
        
$nav_menus        = isset( $starter_content['nav_menus'] ) && ! empty( $this->nav_menus ) ? $starter_content['nav_menus'] : array();
        
$theme_mods       = isset( $starter_content['theme_mods'] ) ? $starter_content['theme_mods'] : array();

        
// Widgets.
        
$max_widget_numbers = array();
        foreach ( 
$sidebars_widgets as $sidebar_id => $widgets ) {
            
$sidebar_widget_ids = array();
            foreach ( 
$widgets as $widget ) {
                list( 
$id_base$instance ) = $widget;

                if ( ! isset( 
$max_widget_numbers$id_base ] ) ) {

                    
// When $settings is an array-like object, get an intrinsic array for use with array_keys().
                    
$settings get_option"widget_{$id_base}", array() );
                    if ( 
$settings instanceof ArrayObject || $settings instanceof ArrayIterator ) {
                        
$settings $settings->getArrayCopy();
                    }

                    
// Find the max widget number for this type.
                    
$widget_numbers array_keys$settings );
                    if ( 
count$widget_numbers ) > ) {
                        
$widget_numbers[]               = 1;
                        
$max_widget_numbers$id_base ] = call_user_func_array'max'$widget_numbers );
                    } else {
                        
$max_widget_numbers$id_base ] = 1;
                    }
                }
                
$max_widget_numbers$id_base ] += 1;

                
$widget_id  sprintf'%s-%d'$id_base$max_widget_numbers$id_base ] );
                
$setting_id sprintf'widget_%s[%d]'$id_base$max_widget_numbers$id_base ] );

                
$setting_value $this->widgets->sanitize_widget_js_instance$instance );
                if ( empty( 
$changeset_data$setting_id ] ) || ! empty( $changeset_data$setting_id ]['starter_content'] ) ) {
                    
$this->set_post_value$setting_id$setting_value );
                    
$this->pending_starter_content_settings_ids[] = $setting_id;
                }
                
$sidebar_widget_ids[] = $widget_id;
            }

            
$setting_id sprintf'sidebars_widgets[%s]'$sidebar_id );
            if ( empty( 
$changeset_data$setting_id ] ) || ! empty( $changeset_data$setting_id ]['starter_content'] ) ) {
                
$this->set_post_value$setting_id$sidebar_widget_ids );
                
$this->pending_starter_content_settings_ids[] = $setting_id;
            }
        }

        
$starter_content_auto_draft_post_ids = array();
        if ( ! empty( 
$changeset_data['nav_menus_created_posts']['value'] ) ) {
            
$starter_content_auto_draft_post_ids array_merge$starter_content_auto_draft_post_ids$changeset_data['nav_menus_created_posts']['value'] );
        }

        
// Make an index of all the posts needed and what their slugs are.
        
$needed_posts = array();
        
$attachments  $this->prepare_starter_content_attachments$attachments );
        foreach ( 
$attachments as $attachment ) {
            
$key                  'attachment:' $attachment['post_name'];
            
$needed_posts$key ] = true;
        }
        foreach ( 
array_keys$posts ) as $post_symbol ) {
            if ( empty( 
$posts$post_symbol ]['post_name'] ) && empty( $posts$post_symbol ]['post_title'] ) ) {
                unset( 
$posts$post_symbol ] );
                continue;
            }
            if ( empty( 
$posts$post_symbol ]['post_name'] ) ) {
                
$posts$post_symbol ]['post_name'] = sanitize_title$posts$post_symbol ]['post_title'] );
            }
            if ( empty( 
$posts$post_symbol ]['post_type'] ) ) {
                
$posts$post_symbol ]['post_type'] = 'post';
            }
            
$needed_posts$posts$post_symbol ]['post_type'] . ':' $posts$post_symbol ]['post_name'] ] = true;
        }
        
$all_post_slugs array_merge(
            
wp_list_pluck$attachments'post_name' ),
            
wp_list_pluck$posts'post_name' )
        );

        
/*
         * Obtain all post types referenced in starter content to use in query.
         * This is needed because 'any' will not account for post types not yet registered.
         */
        
$post_types array_filterarray_merge( array( 'attachment' ), wp_list_pluck$posts'post_type' ) ) );

        
// Re-use auto-draft starter content posts referenced in the current customized state.
        
$existing_starter_content_posts = array();
        if ( ! empty( 
$starter_content_auto_draft_post_ids ) ) {
            
$existing_posts_query = new WP_Query(
                array(
                    
'post__in'       => $starter_content_auto_draft_post_ids,
                    
'post_status'    => 'auto-draft',
                    
'post_type'      => $post_types,
                    
'posts_per_page' => -1,
                )
            );
            foreach ( 
$existing_posts_query->posts as $existing_post ) {
                
$post_name $existing_post->post_name;
                if ( empty( 
$post_name ) ) {
                    
$post_name get_post_meta$existing_post->ID'_customize_draft_post_name'true );
                }
                
$existing_starter_content_posts$existing_post->post_type ':' $post_name ] = $existing_post;
            }
        }

        
// Re-use non-auto-draft posts.
        
if ( ! empty( $all_post_slugs ) ) {
            
$existing_posts_query = new WP_Query(
                array(
                    
'post_name__in'  => $all_post_slugs,
                    
'post_status'    => array_diffget_post_stati(), array( 'auto-draft' ) ),
                    
'post_type'      => 'any',
                    
'posts_per_page' => -1,
                )
            );
            foreach ( 
$existing_posts_query->posts as $existing_post ) {
                
$key $existing_post->post_type ':' $existing_post->post_name;
                if ( isset( 
$needed_posts$key ] ) && ! isset( $existing_starter_content_posts$key ] ) ) {
                    
$existing_starter_content_posts$key ] = $existing_post;
                }
            }
        }

        
// Attachments are technically posts but handled differently.
        
if ( ! empty( $attachments ) ) {

            
$attachment_ids = array();

            foreach ( 
$attachments as $symbol => $attachment ) {
                
$file_array    = array(
                    
'name' => $attachment['file_name'],
                );
                
$file_path     $attachment['file_path'];
                
$attachment_id null;
                
$attached_file null;
                if ( isset( 
$existing_starter_content_posts'attachment:' $attachment['post_name'] ] ) ) {
                    
$attachment_post $existing_starter_content_posts'attachment:' $attachment['post_name'] ];
                    
$attachment_id   $attachment_post->ID;
                    
$attached_file   get_attached_file$attachment_id );
                    if ( empty( 
$attached_file ) || ! file_exists$attached_file ) ) {
                        
$attachment_id null;
                        
$attached_file null;
                    } elseif ( 
$this->get_stylesheet() !== get_post_meta$attachment_post->ID'_starter_content_theme'true ) ) {

                        
// Re-generate attachment metadata since it was previously generated for a different theme.
                        
$metadata wp_generate_attachment_metadata$attachment_post->ID$attached_file );
                        
wp_update_attachment_metadata$attachment_id$metadata );
                        
update_post_meta$attachment_id'_starter_content_theme'$this->get_stylesheet() );
                    }
                }

                
// Insert the attachment auto-draft because it doesn't yet exist or the attached file is gone.
                
if ( ! $attachment_id ) {

                    
// Copy file to temp location so that original file won't get deleted from theme after sideloading.
                    
$temp_file_name wp_tempnambasename$file_path ) );
                    if ( 
$temp_file_name && copy$file_path$temp_file_name ) ) {
                        
$file_array['tmp_name'] = $temp_file_name;
                    }
                    if ( empty( 
$file_array['tmp_name'] ) ) {
                        continue;
                    }

                    
$attachment_post_data array_merge(
                        
wp_array_slice_assoc$attachment, array( 'post_title''post_content''post_excerpt' ) ),
                        array(
                            
'post_status' => 'auto-draft'// So attachment will be garbage collected in a week if changeset is never published.
                        
)
                    );

                    
// In PHP < 5.6 filesize() returns 0 for the temp files unless we clear the file status cache.
                    // Technically, PHP < 5.6.0 || < 5.5.13 || < 5.4.29 but no need to be so targeted.
                    // See https://bugs.php.net/bug.php?id=65701
                    
if ( version_comparePHP_VERSION'5.6''<' ) ) {
                        
clearstatcache();
                    }

                    
$attachment_id media_handle_sideload$file_array0null$attachment_post_data );
                    if ( 
is_wp_error$attachment_id ) ) {
                        continue;
                    }
                    
update_post_meta$attachment_id'_starter_content_theme'$this->get_stylesheet() );
                    
update_post_meta$attachment_id'_customize_draft_post_name'$attachment['post_name'] );
                }

                
$attachment_ids$symbol ] = $attachment_id;
            }
            
$starter_content_auto_draft_post_ids array_merge$starter_content_auto_draft_post_idsarray_values$attachment_ids ) );
        }

        
// Posts & pages.
        
if ( ! empty( $posts ) ) {
            foreach ( 
array_keys$posts ) as $post_symbol ) {
                if ( empty( 
$posts$post_symbol ]['post_type'] ) || empty( $posts$post_symbol ]['post_name'] ) ) {
                    continue;
                }
                
$post_type $posts$post_symbol ]['post_type'];
                if ( ! empty( 
$posts$post_symbol ]['post_name'] ) ) {
                    
$post_name $posts$post_symbol ]['post_name'];
                } elseif ( ! empty( 
$posts$post_symbol ]['post_title'] ) ) {
                    
$post_name sanitize_title$posts$post_symbol ]['post_title'] );
                } else {
                    continue;
                }

                
// Use existing auto-draft post if one already exists with the same type and name.
                
if ( isset( $existing_starter_content_posts$post_type ':' $post_name ] ) ) {
                    
$posts$post_symbol ]['ID'] = $existing_starter_content_posts$post_type ':' $post_name ]->ID;
                    continue;
                }

                
// Translate the featured image symbol.
                
if ( ! empty( $posts$post_symbol ]['thumbnail'] )
                    && 
preg_match'/^{{(?P<symbol>.+)}}$/'$posts$post_symbol ]['thumbnail'], $matches )
                    && isset( 
$attachment_ids$matches['symbol'] ] ) ) {
                    
$posts$post_symbol ]['meta_input']['_thumbnail_id'] = $attachment_ids$matches['symbol'] ];
                }

                if ( ! empty( 
$posts$post_symbol ]['template'] ) ) {
                    
$posts$post_symbol ]['meta_input']['_wp_page_template'] = $posts$post_symbol ]['template'];
                }

                
$r $this->nav_menus->insert_auto_draft_post$posts$post_symbol ] );
                if ( 
$r instanceof WP_Post ) {
                    
$posts$post_symbol ]['ID'] = $r->ID;
                }
            }

            
$starter_content_auto_draft_post_ids array_merge$starter_content_auto_draft_post_idswp_list_pluck$posts'ID' ) );
        }

        
// The nav_menus_created_posts setting is why nav_menus component is dependency for adding posts.
        
if ( ! empty( $this->nav_menus ) && ! empty( $starter_content_auto_draft_post_ids ) ) {
            
$setting_id 'nav_menus_created_posts';
            
$this->set_post_value$setting_idarray_uniquearray_values$starter_content_auto_draft_post_ids ) ) );
            
$this->pending_starter_content_settings_ids[] = $setting_id;
        }

        
// Nav menus.
        
$placeholder_id              = -1;
        
$reused_nav_menu_setting_ids = array();
        foreach ( 
$nav_menus as $nav_menu_location => $nav_menu ) {

            
$nav_menu_term_id    null;
            
$nav_menu_setting_id null;
            
$matches             = array();

            
// Look for an existing placeholder menu with starter content to re-use.
            
foreach ( $changeset_data as $setting_id => $setting_params ) {
                
$can_reuse = (
                    ! empty( 
$setting_params['starter_content'] )
                    &&
                    ! 
in_array$setting_id$reused_nav_menu_setting_idstrue )
                    &&
                    
preg_match'#^nav_menu\[(?P<nav_menu_id>-?\d+)\]$#'$setting_id$matches )
                );
                if ( 
$can_reuse ) {
                    
$nav_menu_term_id              intval$matches['nav_menu_id'] );
                    
$nav_menu_setting_id           $setting_id;
                    
$reused_nav_menu_setting_ids[] = $setting_id;
                    break;
                }
            }

            if ( ! 
$nav_menu_term_id ) {
                while ( isset( 
$changeset_datasprintf'nav_menu[%d]'$placeholder_id ) ] ) ) {
                    
$placeholder_id--;
                }
                
$nav_menu_term_id    $placeholder_id;
                
$nav_menu_setting_id sprintf'nav_menu[%d]'$placeholder_id );
            }

            
$this->set_post_value(
                
$nav_menu_setting_id,
                array(
                    
'name' => isset( $nav_menu['name'] ) ? $nav_menu['name'] : $nav_menu_location,
                )
            );
            
$this->pending_starter_content_settings_ids[] = $nav_menu_setting_id;

            
// @todo Add support for menu_item_parent.
            
$position 0;
            foreach ( 
$nav_menu['items'] as $nav_menu_item ) {
                
$nav_menu_item_setting_id sprintf'nav_menu_item[%d]'$placeholder_id-- );
                if ( ! isset( 
$nav_menu_item['position'] ) ) {
                    
$nav_menu_item['position'] = $position++;
                }
                
$nav_menu_item['nav_menu_term_id'] = $nav_menu_term_id;

                if ( isset( 
$nav_menu_item['object_id'] ) ) {
                    if ( 
'post_type' === $nav_menu_item['type'] && preg_match'/^{{(?P<symbol>.+)}}$/'$nav_menu_item['object_id'], $matches ) && isset( $posts$matches['symbol'] ] ) ) {
                        
$nav_menu_item['object_id'] = $posts$matches['symbol'] ]['ID'];
                        if ( empty( 
$nav_menu_item['title'] ) ) {
                            
$original_object        get_post$nav_menu_item['object_id'] );
                            
$nav_menu_item['title'] = $original_object->post_title;
                        }
                    } else {
                        continue;
                    }
                } else {
                    
$nav_menu_item['object_id'] = 0;
                }

                if ( empty( 
$changeset_data$nav_menu_item_setting_id ] ) || ! empty( $changeset_data$nav_menu_item_setting_id ]['starter_content'] ) ) {
                    
$this->set_post_value$nav_menu_item_setting_id$nav_menu_item );
                    
$this->pending_starter_content_settings_ids[] = $nav_menu_item_setting_id;
                }
            }

            
$setting_id sprintf'nav_menu_locations[%s]'$nav_menu_location );
            if ( empty( 
$changeset_data$setting_id ] ) || ! empty( $changeset_data$setting_id ]['starter_content'] ) ) {
                
$this->set_post_value$setting_id$nav_menu_term_id );
                
$this->pending_starter_content_settings_ids[] = $setting_id;
            }
        }

        
// Options.
        
foreach ( $options as $name => $value ) {
            if ( 
preg_match'/^{{(?P<symbol>.+)}}$/'$value$matches ) ) {
                if ( isset( 
$posts$matches['symbol'] ] ) ) {
                    
$value $posts$matches['symbol'] ]['ID'];
                } elseif ( isset( 
$attachment_ids$matches['symbol'] ] ) ) {
                    
$value $attachment_ids$matches['symbol'] ];
                } else {
                    continue;
                }
            }

            if ( empty( 
$changeset_data$name ] ) || ! empty( $changeset_data$name ]['starter_content'] ) ) {
                
$this->set_post_value$name$value );
                
$this->pending_starter_content_settings_ids[] = $name;
            }
        }

        
// Theme mods.
        
foreach ( $theme_mods as $name => $value ) {
            if ( 
preg_match'/^{{(?P<symbol>.+)}}$/'$value$matches ) ) {
                if ( isset( 
$posts$matches['symbol'] ] ) ) {
                    
$value $posts$matches['symbol'] ]['ID'];
                } elseif ( isset( 
$attachment_ids$matches['symbol'] ] ) ) {
                    
$value $attachment_ids$matches['symbol'] ];
                } else {
                    continue;
                }
            }

            
// Handle header image as special case since setting has a legacy format.
            
if ( 'header_image' === $name ) {
                
$name     'header_image_data';
                
$metadata wp_get_attachment_metadata$value );
                if ( empty( 
$metadata ) ) {
                    continue;
                }
                
$value = array(
                    
'attachment_id' => $value,
                    
'url'           => wp_get_attachment_url$value ),
                    
'height'        => $metadata['height'],
                    
'width'         => $metadata['width'],
                );
            } elseif ( 
'background_image' === $name ) {
                
$value wp_get_attachment_url$value );
            }

            if ( empty( 
$changeset_data$name ] ) || ! empty( $changeset_data$name ]['starter_content'] ) ) {
                
$this->set_post_value$name$value );
                
$this->pending_starter_content_settings_ids[] = $name;
            }
        }

        if ( ! empty( 
$this->pending_starter_content_settings_ids ) ) {
            if ( 
did_action'customize_register' ) ) {
                
$this->_save_starter_content_changeset();
            } else {
                
add_action'customize_register', array( $this'_save_starter_content_changeset' ), 1000 );
            }
        }
    }

    
/**
     * Prepare starter content attachments.
     *
     * Ensure that the attachments are valid and that they have slugs and file name/path.
     *
     * @since 4.7.0
     *
     * @param array $attachments Attachments.
     * @return array Prepared attachments.
     */
    
protected function prepare_starter_content_attachments$attachments ) {
        
$prepared_attachments = array();
        if ( empty( 
$attachments ) ) {
            return 
$prepared_attachments;
        }

        
// Such is The WordPress Way.
        
require_once( ABSPATH 'site-admin/includes/file.php' );
        require_once( 
ABSPATH 'site-admin/includes/media.php' );
        require_once( 
ABSPATH 'site-admin/includes/image.php' );

        foreach ( 
$attachments as $symbol => $attachment ) {

            
// A file is required and URLs to files are not currently allowed.
            
if ( empty( $attachment['file'] ) || preg_match'#^https?://$#'$attachment['file'] ) ) {
                continue;
            }

            
$file_path null;
            if ( 
file_exists$attachment['file'] ) ) {
                
$file_path $attachment['file']; // Could be absolute path to file in plugin.
            
} elseif ( is_child_theme() && file_existsget_stylesheet_directory() . '/' $attachment['file'] ) ) {
                
$file_path get_stylesheet_directory() . '/' $attachment['file'];
            } elseif ( 
file_existsget_template_directory() . '/' $attachment['file'] ) ) {
                
$file_path get_template_directory() . '/' $attachment['file'];
            } else {
                continue;
            }
            
$file_name basename$attachment['file'] );

            
// Skip file types that are not recognized.
            
$checked_filetype wp_check_filetype$file_name );
            if ( empty( 
$checked_filetype['type'] ) ) {
                continue;
            }

            
// Ensure post_name is set since not automatically derived from post_title for new auto-draft posts.
            
if ( empty( $attachment['post_name'] ) ) {
                if ( ! empty( 
$attachment['post_title'] ) ) {
                    
$attachment['post_name'] = sanitize_title$attachment['post_title'] );
                } else {
                    
$attachment['post_name'] = sanitize_titlepreg_replace'/\.\w+$/'''$file_name ) );
                }
            }

            
$attachment['file_name']         = $file_name;
            
$attachment['file_path']         = $file_path;
            
$prepared_attachments$symbol ] = $attachment;
        }
        return 
$prepared_attachments;
    }

    
/**
     * Save starter content changeset.
     *
     * @since 4.7.0
     */
    
public function _save_starter_content_changeset() {

        if ( empty( 
$this->pending_starter_content_settings_ids ) ) {
            return;
        }

        
$this->save_changeset_post(
            array(
                
'data'            => array_fill_keys$this->pending_starter_content_settings_ids, array( 'starter_content' => true ) ),
                
'starter_content' => true,
            )
        );
        
$this->saved_starter_content_changeset true;

        
$this->pending_starter_content_settings_ids = array();
    }

    
/**
     * Get dirty pre-sanitized setting values in the current customized state.
     *
     * The returned array consists of a merge of three sources:
     * 1. If the theme is not currently active, then the base array is any stashed
     *    theme mods that were modified previously but never published.
     * 2. The values from the current changeset, if it exists.
     * 3. If the user can customize, the values parsed from the incoming
     *    `$_POST['customized']` JSON data.
     * 4. Any programmatically-set post values via `WP_Customize_Manager::set_post_value()`.
     *
     * The name "unsanitized_post_values" is a carry-over from when the customized
     * state was exclusively sourced from `$_POST['customized']`. Nevertheless,
     * the value returned will come from the current changeset post and from the
     * incoming post data.
     *
     * @since 4.1.1
     * @since 4.7.0 Added `$args` parameter and merging with changeset values and stashed theme mods.
     *
     * @param array $args {
     *     Args.
     *
     *     @type bool $exclude_changeset Whether the changeset values should also be excluded. Defaults to false.
     *     @type bool $exclude_post_data Whether the post input values should also be excluded. Defaults to false when lacking the customize capability.
     * }
     * @return array
     */
    
public function unsanitized_post_values$args = array() ) {
        
$args array_merge(
            array(
                
'exclude_changeset' => false,
                
'exclude_post_data' => ! current_user_can'customize' ),
            ),
            
$args
        
);

        
$values = array();

        
// Let default values be from the stashed theme mods if doing a theme switch and if no changeset is present.
        
if ( ! $this->is_theme_active() ) {
            
$stashed_theme_mods get_option'customize_stashed_theme_mods' );
            
$stylesheet         $this->get_stylesheet();
            if ( isset( 
$stashed_theme_mods$stylesheet ] ) ) {
                
$values array_merge$valueswp_list_pluck$stashed_theme_mods$stylesheet ], 'value' ) );
            }
        }

        if ( ! 
$args['exclude_changeset'] ) {
            foreach ( 
$this->changeset_data() as $setting_id => $setting_params ) {
                if ( ! 
array_key_exists'value'$setting_params ) ) {
                    continue;
                }
                if ( isset( 
$setting_params['type'] ) && 'theme_mod' === $setting_params['type'] ) {

                    
// Ensure that theme mods values are only used if they were saved under the current theme.
                    
$namespace_pattern '/^(?P<stylesheet>.+?)::(?P<setting_id>.+)$/';
                    if ( 
preg_match$namespace_pattern$setting_id$matches ) && $this->get_stylesheet() === $matches['stylesheet'] ) {
                        
$values$matches['setting_id'] ] = $setting_params['value'];
                    }
                } else {
                    
$values$setting_id ] = $setting_params['value'];
                }
            }
        }

        if ( ! 
$args['exclude_post_data'] ) {
            if ( ! isset( 
$this->_post_values ) ) {
                if ( isset( 
$_POST['customized'] ) ) {
                    
$post_values json_decodewp_unslash$_POST['customized'] ), true );
                } else {
                    
$post_values = array();
                }
                if ( 
is_array$post_values ) ) {
                    
$this->_post_values $post_values;
                } else {
                    
$this->_post_values = array();
                }
            }
            
$values array_merge$values$this->_post_values );
        }
        return 
$values;
    }

    
/**
     * Returns the sanitized value for a given setting from the current customized state.
     *
     * The name "post_value" is a carry-over from when the customized state was exclusively
     * sourced from `$_POST['customized']`. Nevertheless, the value returned will come
     * from the current changeset post and from the incoming post data.
     *
     * @since 3.4.0
     * @since 4.1.1 Introduced the `$default` parameter.
     * @since 4.6.0 `$default` is now returned early when the setting post value is invalid.
     *
     * @see WP_REST_Server::dispatch()
     * @see WP_REST_Request::sanitize_params()
     * @see WP_REST_Request::has_valid_params()
     *
     * @param WP_Customize_Setting $setting A WP_Customize_Setting derived object.
     * @param mixed                $default Value returned $setting has no post value (added in 4.2.0)
     *                                      or the post value is invalid (added in 4.6.0).
     * @return string|mixed $post_value Sanitized value or the $default provided.
     */
    
public function post_value$setting$default null ) {
        
$post_values $this->unsanitized_post_values();
        if ( ! 
array_key_exists$setting->id$post_values ) ) {
            return 
$default;
        }
        
$value $post_values$setting->id ];
        
$valid $setting->validate$value );
        if ( 
is_wp_error$valid ) ) {
            return 
$default;
        }
        
$value $setting->sanitize$value );
        if ( 
is_null$value ) || is_wp_error$value ) ) {
            return 
$default;
        }
        return 
$value;
    }

    
/**
     * Override a setting's value in the current customized state.
     *
     * The name "post_value" is a carry-over from when the customized state was
     * exclusively sourced from `$_POST['customized']`.
     *
     * @since 4.2.0
     *
     * @param string $setting_id ID for the WP_Customize_Setting instance.
     * @param mixed  $value      Post value.
     */
    
public function set_post_value$setting_id$value ) {
        
$this->unsanitized_post_values(); // Populate _post_values from $_POST['customized'].
        
$this->_post_values$setting_id ] = $value;

        
/**
         * Announce when a specific setting's unsanitized post value has been set.
         *
         * Fires when the WP_Customize_Manager::set_post_value() method is called.
         *
         * The dynamic portion of the hook name, `$setting_id`, refers to the setting ID.
         *
         * @since 4.4.0
         *
         * @param mixed                $value Unsanitized setting post value.
         * @param WP_Customize_Manager $this  WP_Customize_Manager instance.
         */
        
do_action"customize_post_value_set_{$setting_id}"$value$this );

        
/**
         * Announce when any setting's unsanitized post value has been set.
         *
         * Fires when the WP_Customize_Manager::set_post_value() method is called.
         *
         * This is useful for `WP_Customize_Setting` instances to watch
         * in order to update a cached previewed value.
         *
         * @since 4.4.0
         *
         * @param string               $setting_id Setting ID.
         * @param mixed                $value      Unsanitized setting post value.
         * @param WP_Customize_Manager $this       WP_Customize_Manager instance.
         */
        
do_action'customize_post_value_set'$setting_id$value$this );
    }

    
/**
     * Print JavaScript settings.
     *
     * @since 3.4.0
     */
    
public function customize_preview_init() {

        
/*
         * Now that Customizer previews are loaded into iframes via GET requests
         * and natural URLs with transaction UUIDs added, we need to ensure that
         * the responses are never cached by proxies. In practice, this will not
         * be needed if the user is logged-in anyway. But if anonymous access is
         * allowed then the auth cookies would not be sent and WordPress would
         * not send no-cache headers by default.
         */
        
if ( ! headers_sent() ) {
            
nocache_headers();
            
header'X-Robots: noindex, nofollow, noarchive' );
        }
        
add_action'wp_head''wp_no_robots' );
        
add_filter'wp_headers', array( $this'filter_iframe_security_headers' ) );

        
/*
         * If preview is being served inside the customizer preview iframe, and
         * if the user doesn't have customize capability, then it is assumed
         * that the user's session has expired and they need to re-authenticate.
         */
        
if ( $this->messenger_channel && ! current_user_can'customize' ) ) {
            
$this->wp_die( -1__'Unauthorized. You may remove the customize_messenger_channel param to preview as frontend.' ) );
            return;
        }

        
$this->prepare_controls();

        
add_filter'wp_redirect', array( $this'add_state_query_params' ) );

        
wp_enqueue_script'customize-preview' );
        
wp_enqueue_style'customize-preview' );
        
add_action'wp_head', array( $this'customize_preview_loading_style' ) );
        
add_action'wp_head', array( $this'remove_frameless_preview_messenger_channel' ) );
        
add_action'wp_footer', array( $this'customize_preview_settings' ), 20 );
        
add_filter'get_edit_post_link''__return_empty_string' );

        
/**
         * Fires once the Customizer preview has initialized and JavaScript
         * settings have been printed.
         *
         * @since 3.4.0
         *
         * @param WP_Customize_Manager $this WP_Customize_Manager instance.
         */
        
do_action'customize_preview_init'$this );
    }

    
/**
     * Filter the X-Frame-Options and Content-Security-Policy headers to ensure frontend can load in customizer.
     *
     * @since 4.7.0
     *
     * @param array $headers Headers.
     * @return array Headers.
     */
    
public function filter_iframe_security_headers$headers ) {
        
$headers['X-Frame-Options']         = 'SAMEORIGIN';
        
$headers['Content-Security-Policy'] = "frame-ancestors 'self'";
        return 
$headers;
    }

    
/**
     * Add customize state query params to a given URL if preview is allowed.
     *
     * @since 4.7.0
     * @see wp_redirect()
     * @see WP_Customize_Manager::get_allowed_url()
     *
     * @param string $url URL.
     * @return string URL.
     */
    
public function add_state_query_params$url ) {
        
$parsed_original_url wp_parse_url$url );
        
$is_allowed          false;
        foreach ( 
$this->get_allowed_urls() as $allowed_url ) {
            
$parsed_allowed_url wp_parse_url$allowed_url );
            
$is_allowed         = (
                
$parsed_allowed_url['scheme'] === $parsed_original_url['scheme']
                &&
                
$parsed_allowed_url['host'] === $parsed_original_url['host']
                &&
                
=== strpos$parsed_original_url['path'], $parsed_allowed_url['path'] )
            );
            if ( 
$is_allowed ) {
                break;
            }
        }

        if ( 
$is_allowed ) {
            
$query_params = array(
                
'customize_changeset_uuid' => $this->changeset_uuid(),
            );
            if ( ! 
$this->is_theme_active() ) {
                
$query_params['customize_theme'] = $this->get_stylesheet();
            }
            if ( 
$this->messenger_channel ) {
                
$query_params['customize_messenger_channel'] = $this->messenger_channel;
            }
            
$url add_query_arg$query_params$url );
        }

        return 
$url;
    }

    
/**
     * Prevent sending a 404 status when returning the response for the customize
     * preview, since it causes the jQuery Ajax to fail. Send 200 instead.
     *
     * @since 4.0.0
     * @deprecated 4.7.0
     */
    
public function customize_preview_override_404_status() {
        
_deprecated_function__METHOD__'4.7.0' );
    }

    
/**
     * Print base element for preview frame.
     *
     * @since 3.4.0
     * @deprecated 4.7.0
     */
    
public function customize_preview_base() {
        
_deprecated_function__METHOD__'4.7.0' );
    }

    
/**
     * Print a workaround to handle HTML5 tags in IE < 9.
     *
     * @since 3.4.0
     * @deprecated 4.7.0 Customizer no longer supports IE8, so all supported browsers recognize HTML5.
     */
    
public function customize_preview_html5() {
        
_deprecated_function__FUNCTION__'4.7.0' );
    }

    
/**
     * Print CSS for loading indicators for the Customizer preview.
     *
     * @since 4.2.0
     */
    
public function customize_preview_loading_style() {
        
?>
        <style>
            body.wp-customizer-unloading {
                opacity: 0.25;
                cursor: progress !important;
                -webkit-transition: opacity 0.5s;
                transition: opacity 0.5s;
            }
            body.wp-customizer-unloading * {
                pointer-events: none !important;
            }
            form.customize-unpreviewable,
            form.customize-unpreviewable input,
            form.customize-unpreviewable select,
            form.customize-unpreviewable button,
            a.customize-unpreviewable,
            area.customize-unpreviewable {
                cursor: not-allowed !important;
            }
        </style>
        <?php
    
}

    
/**
     * Remove customize_messenger_channel query parameter from the preview window when it is not in an iframe.
     *
     * This ensures that the admin bar will be shown. It also ensures that link navigation will
     * work as expected since the parent frame is not being sent the URL to navigate to.
     *
     * @since 4.7.0
     */
    
public function remove_frameless_preview_messenger_channel() {
        if ( ! 
$this->messenger_channel ) {
            return;
        }
        
?>
        <script>
        ( function() {
            var urlParser, oldQueryParams, newQueryParams, i;
            if ( parent !== window ) {
                return;
            }
            urlParser = document.createElement( 'a' );
            urlParser.href = location.href;
            oldQueryParams = urlParser.search.substr( 1 ).split( /&/ );
            newQueryParams = [];
            for ( i = 0; i < oldQueryParams.length; i += 1 ) {
                if ( ! /^customize_messenger_channel=/.test( oldQueryParams[ i ] ) ) {
                    newQueryParams.push( oldQueryParams[ i ] );
                }
            }
            urlParser.search = newQueryParams.join( '&' );
            if ( urlParser.search !== location.search ) {
                location.replace( urlParser.href );
            }
        } )();
        </script>
        <?php
    
}

    
/**
     * Print JavaScript settings for preview frame.
     *
     * @since 3.4.0
     */
    
public function customize_preview_settings() {
        
$post_values                 $this->unsanitized_post_values( array( 'exclude_changeset' => true ) );
        
$setting_validities          $this->validate_setting_values$post_values );
        
$exported_setting_validities array_map( array( $this'prepare_setting_validity_for_js' ), $setting_validities );

        
// Note that the REQUEST_URI is not passed into home_url() since this breaks subdirectory installations.
        
$self_url           = empty( $_SERVER['REQUEST_URI'] ) ? home_url'/' ) : esc_url_rawwp_unslash$_SERVER['REQUEST_URI'] ) );
        
$state_query_params = array(
            
'customize_theme',
            
'customize_changeset_uuid',
            
'customize_messenger_channel',
        );
        
$self_url           remove_query_arg$state_query_params$self_url );

        
$allowed_urls  $this->get_allowed_urls();
        
$allowed_hosts = array();
        foreach ( 
$allowed_urls as $allowed_url ) {
            
$parsed wp_parse_url$allowed_url );
            if ( empty( 
$parsed['host'] ) ) {
                continue;
            }
            
$host $parsed['host'];
            if ( ! empty( 
$parsed['port'] ) ) {
                
$host .= ':' $parsed['port'];
            }
            
$allowed_hosts[] = $host;
        }

        
$switched_locale switch_to_localeget_user_locale() );
        
$l10n            = array(
            
'shiftClickToEdit'  => __'Shift-click to edit this element.' ),
            
'linkUnpreviewable' => __'This link is not live-previewable.' ),
            
'formUnpreviewable' => __'This form is not live-previewable.' ),
        );
        if ( 
$switched_locale ) {
            
restore_previous_locale();
        }

        
$settings = array(
            
'changeset'         => array(
                
'uuid'      => $this->changeset_uuid(),
                
'autosaved' => $this->autosaved(),
            ),
            
'timeouts'          => array(
                
'selectiveRefresh' => 250,
                
'keepAliveSend'    => 1000,
            ),
            
'theme'             => array(
                
'stylesheet' => $this->get_stylesheet(),
                
'active'     => $this->is_theme_active(),
            ),
            
'url'               => array(
                
'self'          => $self_url,
                
'allowed'       => array_map'esc_url_raw'$this->get_allowed_urls() ),
                
'allowedHosts'  => array_unique$allowed_hosts ),
                
'isCrossDomain' => $this->is_cross_domain(),
            ),
            
'channel'           => $this->messenger_channel,
            
'activePanels'      => array(),
            
'activeSections'    => array(),
            
'activeControls'    => array(),
            
'settingValidities' => $exported_setting_validities,
            
'nonce'             => current_user_can'customize' ) ? $this->get_nonces() : array(),
            
'l10n'              => $l10n,
            
'_dirty'            => array_keys$post_values ),
        );

        foreach ( 
$this->panels as $panel_id => $panel ) {
            if ( 
$panel->check_capabilities() ) {
                
$settings['activePanels'][ $panel_id ] = $panel->active();
                foreach ( 
$panel->sections as $section_id => $section ) {
                    if ( 
$section->check_capabilities() ) {
                        
$settings['activeSections'][ $section_id ] = $section->active();
                    }
                }
            }
        }
        foreach ( 
$this->sections as $id => $section ) {
            if ( 
$section->check_capabilities() ) {
                
$settings['activeSections'][ $id ] = $section->active();
            }
        }
        foreach ( 
$this->controls as $id => $control ) {
            if ( 
$control->check_capabilities() ) {
                
$settings['activeControls'][ $id ] = $control->active();
            }
        }

        
?>
        <script type="text/javascript">
            var _wpCustomizeSettings = <?php echo wp_json_encode$settings ); ?>;
            _wpCustomizeSettings.values = {};
            (function( v ) {
                <?php
                
/*
                 * Serialize settings separately from the initial _wpCustomizeSettings
                 * serialization in order to avoid a peak memory usage spike.
                 * @todo We may not even need to export the values at all since the pane syncs them anyway.
                 */
                
foreach ( $this->settings as $id => $setting ) {
                    if ( 
$setting->check_capabilities() ) {
                        
printf(
                            
"v[%s] = %s;\n",
                            
wp_json_encode$id ),
                            
wp_json_encode$setting->js_value() )
                        );
                    }
                }
                
?>
            })( _wpCustomizeSettings.values );
        </script>
        <?php
    
}

    
/**
     * Prints a signature so we can ensure the Customizer was properly executed.
     *
     * @since 3.4.0
     * @deprecated 4.7.0
     */
    
public function customize_preview_signature() {
        
_deprecated_function__METHOD__'4.7.0' );
    }

    
/**
     * Removes the signature in case we experience a case where the Customizer was not properly executed.
     *
     * @since 3.4.0
     * @deprecated 4.7.0
     *
     * @param mixed $return Value passed through for {@see 'wp_die_handler'} filter.
     * @return mixed Value passed through for {@see 'wp_die_handler'} filter.
     */
    
public function remove_preview_signature$return null ) {
        
_deprecated_function__METHOD__'4.7.0' );

        return 
$return;
    }

    
/**
     * Is it a theme preview?
     *
     * @since 3.4.0
     *
     * @return bool True if it's a preview, false if not.
     */
    
public function is_preview() {
        return (bool) 
$this->previewing;
    }

    
/**
     * Retrieve the template name of the previewed theme.
     *
     * @since 3.4.0
     *
     * @return string Template name.
     */
    
public function get_template() {
        return 
$this->theme()->get_template();
    }

    
/**
     * Retrieve the stylesheet name of the previewed theme.
     *
     * @since 3.4.0
     *
     * @return string Stylesheet name.
     */
    
public function get_stylesheet() {
        return 
$this->theme()->get_stylesheet();
    }

    
/**
     * Retrieve the template root of the previewed theme.
     *
     * @since 3.4.0
     *
     * @return string Theme root.
     */
    
public function get_template_root() {
        return 
get_raw_theme_root$this->get_template(), true );
    }

    
/**
     * Retrieve the stylesheet root of the previewed theme.
     *
     * @since 3.4.0
     *
     * @return string Theme root.
     */
    
public function get_stylesheet_root() {
        return 
get_raw_theme_root$this->get_stylesheet(), true );
    }

    
/**
     * Filters the current theme and return the name of the previewed theme.
     *
     * @since 3.4.0
     *
     * @param $current_theme {@internal Parameter is not used}
     * @return string Theme name.
     */
    
public function current_theme$current_theme ) {
        return 
$this->theme()->display'Name' );
    }

    
/**
     * Validates setting values.
     *
     * Validation is skipped for unregistered settings or for values that are
     * already null since they will be skipped anyway. Sanitization is applied
     * to values that pass validation, and values that become null or `WP_Error`
     * after sanitizing are marked invalid.
     *
     * @since 4.6.0
     *
     * @see WP_REST_Request::has_valid_params()
     * @see WP_Customize_Setting::validate()
     *
     * @param array $setting_values Mapping of setting IDs to values to validate and sanitize.
     * @param array $options {
     *     Options.
     *
     *     @type bool $validate_existence  Whether a setting's existence will be checked.
     *     @type bool $validate_capability Whether the setting capability will be checked.
     * }
     * @return array Mapping of setting IDs to return value of validate method calls, either `true` or `WP_Error`.
     */
    
public function validate_setting_values$setting_values$options = array() ) {
        
$options wp_parse_args(
            
$options,
            array(
                
'validate_capability' => false,
                
'validate_existence'  => false,
            )
        );

        
$validities = array();
        foreach ( 
$setting_values as $setting_id => $unsanitized_value ) {
            
$setting $this->get_setting$setting_id );
            if ( ! 
$setting ) {
                if ( 
$options['validate_existence'] ) {
                    
$validities$setting_id ] = new WP_Error'unrecognized'__'Setting does not exist or is unrecognized.' ) );
                }
                continue;
            }
            if ( 
$options['validate_capability'] && ! current_user_can$setting->capability ) ) {
                
$validity = new WP_Error'unauthorized'__'Unauthorized to modify setting due to capability.' ) );
            } else {
                if ( 
is_null$unsanitized_value ) ) {
                    continue;
                }
                
$validity $setting->validate$unsanitized_value );
            }
            if ( ! 
is_wp_error$validity ) ) {
                
/** This filter is documented in site-inc/class-wp-customize-setting.php */
                
$late_validity apply_filters"customize_validate_{$setting->id}", new WP_Error(), $unsanitized_value$setting );
                if ( 
is_wp_error$late_validity ) && $late_validity->has_errors() ) {
                    
$validity $late_validity;
                }
            }
            if ( ! 
is_wp_error$validity ) ) {
                
$value $setting->sanitize$unsanitized_value );
                if ( 
is_null$value ) ) {
                    
$validity false;
                } elseif ( 
is_wp_error$value ) ) {
                    
$validity $value;
                }
            }
            if ( 
false === $validity ) {
                
$validity = new WP_Error'invalid_value'__'Invalid value.' ) );
            }
            
$validities$setting_id ] = $validity;
        }
        return 
$validities;
    }

    
/**
     * Prepares setting validity for exporting to the client (JS).
     *
     * Converts `WP_Error` instance into array suitable for passing into the
     * `wp.customize.Notification` JS model.
     *
     * @since 4.6.0
     *
     * @param true|WP_Error $validity Setting validity.
     * @return true|array If `$validity` was a WP_Error, the error codes will be array-mapped
     *                    to their respective `message` and `data` to pass into the
     *                    `wp.customize.Notification` JS model.
     */
    
public function prepare_setting_validity_for_js$validity ) {
        if ( 
is_wp_error$validity ) ) {
            
$notification = array();
            foreach ( 
$validity->errors as $error_code => $error_messages ) {
                
$notification$error_code ] = array(
                    
'message' => join' '$error_messages ),
                    
'data'    => $validity->get_error_data$error_code ),
                );
            }
            return 
$notification;
        } else {
            return 
true;
        }
    }

    
/**
     * Handle customize_save WP Ajax request to save/update a changeset.
     *
     * @since 3.4.0
     * @since 4.7.0 The semantics of this method have changed to update a changeset, optionally to also change the status and other attributes.
     */
    
public function save() {
        if ( ! 
is_user_logged_in() ) {
            
wp_send_json_error'unauthenticated' );
        }

        if ( ! 
$this->is_preview() ) {
            
wp_send_json_error'not_preview' );
        }

        
$action 'save-customize_' $this->get_stylesheet();
        if ( ! 
check_ajax_referer$action'nonce'false ) ) {
            
wp_send_json_error'invalid_nonce' );
        }

        
$changeset_post_id $this->changeset_post_id();
        
$is_new_changeset  = empty( $changeset_post_id );
        if ( 
$is_new_changeset ) {
            if ( ! 
current_user_canget_post_type_object'customize_changeset' )->cap->create_posts ) ) {
                
wp_send_json_error'cannot_create_changeset_post' );
            }
        } else {
            if ( ! 
current_user_canget_post_type_object'customize_changeset' )->cap->edit_post$changeset_post_id ) ) {
                
wp_send_json_error'cannot_edit_changeset_post' );
            }
        }

        if ( ! empty( 
$_POST['customize_changeset_data'] ) ) {
            
$input_changeset_data json_decodewp_unslash$_POST['customize_changeset_data'] ), true );
            if ( ! 
is_array$input_changeset_data ) ) {
                
wp_send_json_error'invalid_customize_changeset_data' );
            }
        } else {
            
$input_changeset_data = array();
        }

        
// Validate title.
        
$changeset_title null;
        if ( isset( 
$_POST['customize_changeset_title'] ) ) {
            
$changeset_title sanitize_text_fieldwp_unslash$_POST['customize_changeset_title'] ) );
        }

        
// Validate changeset status param.
        
$is_publish       null;
        
$changeset_status null;
        if ( isset( 
$_POST['customize_changeset_status'] ) ) {
            
$changeset_status wp_unslash$_POST['customize_changeset_status'] );
            if ( ! 
get_post_status_object$changeset_status ) || ! in_array$changeset_status, array( 'draft''pending''publish''future' ), true ) ) {
                
wp_send_json_error'bad_customize_changeset_status'400 );
            }
            
$is_publish = ( 'publish' === $changeset_status || 'future' === $changeset_status );
            if ( 
$is_publish && ! current_user_canget_post_type_object'customize_changeset' )->cap->publish_posts ) ) {
                
wp_send_json_error'changeset_publish_unauthorized'403 );
            }
        }

        
/*
         * Validate changeset date param. Date is assumed to be in local time for
         * the WP if in MySQL format (YYYY-MM-DD HH:MM:SS). Otherwise, the date
         * is parsed with strtotime() so that ISO date format may be supplied
         * or a string like "+10 minutes".
         */
        
$changeset_date_gmt null;
        if ( isset( 
$_POST['customize_changeset_date'] ) ) {
            
$changeset_date wp_unslash$_POST['customize_changeset_date'] );
            if ( 
preg_match'/^\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d$/'$changeset_date ) ) {
                
$mm         substr$changeset_date5);
                
$jj         substr$changeset_date8);
                
$aa         substr$changeset_date0);
                
$valid_date wp_checkdate$mm$jj$aa$changeset_date );
                if ( ! 
$valid_date ) {
                    
wp_send_json_error'bad_customize_changeset_date'400 );
                }
                
$changeset_date_gmt get_gmt_from_date$changeset_date );
            } else {
                
$timestamp strtotime$changeset_date );
                if ( ! 
$timestamp ) {
                    
wp_send_json_error'bad_customize_changeset_date'400 );
                }
                
$changeset_date_gmt gmdate'Y-m-d H:i:s'$timestamp );
            }
        }

        
$lock_user_id null;
        
$autosave     = ! empty( $_POST['customize_changeset_autosave'] );
        if ( ! 
$is_new_changeset ) {
            
$lock_user_id wp_check_post_lock$this->changeset_post_id() );
        }

        
// Force request to autosave when changeset is locked.
        
if ( $lock_user_id && ! $autosave ) {
            
$autosave           true;
            
$changeset_status   null;
            
$changeset_date_gmt null;
        }

        if ( 
$autosave && ! defined'DOING_AUTOSAVE' ) ) { // Back-compat.
            
define'DOING_AUTOSAVE'true );
        }

        
$autosaved false;
        
$r         $this->save_changeset_post(
            array(
                
'status'   => $changeset_status,
                
'title'    => $changeset_title,
                
'date_gmt' => $changeset_date_gmt,
                
'data'     => $input_changeset_data,
                
'autosave' => $autosave,
            )
        );
        if ( 
$autosave && ! is_wp_error$r ) ) {
            
$autosaved true;
        }

        
// If the changeset was locked and an autosave request wasn't itself an error, then now explicitly return with a failure.
        
if ( $lock_user_id && ! is_wp_error$r ) ) {
            
$r = new WP_Error(
                
'changeset_locked',
                
__'Changeset is being edited by other user.' ),
                array(
                    
'lock_user' => $this->get_lock_user_data$lock_user_id ),
                )
            );
        }

        if ( 
is_wp_error$r ) ) {
            
$response = array(
                
'message' => $r->get_error_message(),
                
'code'    => $r->get_error_code(),
            );
            if ( 
is_array$r->get_error_data() ) ) {
                
$response array_merge$response$r->get_error_data() );
            } else {
                
$response['data'] = $r->get_error_data();
            }
        } else {
            
$response       $r;
            
$changeset_post get_post$this->changeset_post_id() );

            
// Dismiss all other auto-draft changeset posts for this user (they serve like autosave revisions), as there should only be one.
            
if ( $is_new_changeset ) {
                
$this->dismiss_user_auto_draft_changesets();
            }

            
// Note that if the changeset status was publish, then it will get set to trash if revisions are not supported.
            
$response['changeset_status'] = $changeset_post->post_status;
            if ( 
$is_publish && 'trash' === $response['changeset_status'] ) {
                
$response['changeset_status'] = 'publish';
            }

            if ( 
'publish' !== $response['changeset_status'] ) {
                
$this->set_changeset_lock$changeset_post->ID );
            }

            if ( 
'future' === $response['changeset_status'] ) {
                
$response['changeset_date'] = $changeset_post->post_date;
            }

            if ( 
'publish' === $response['changeset_status'] || 'trash' === $response['changeset_status'] ) {
                
$response['next_changeset_uuid'] = wp_generate_uuid4();
            }
        }

        if ( 
$autosave ) {
            
$response['autosaved'] = $autosaved;
        }

        if ( isset( 
$response['setting_validities'] ) ) {
            
$response['setting_validities'] = array_map( array( $this'prepare_setting_validity_for_js' ), $response['setting_validities'] );
        }

        
/**
         * Filters response data for a successful customize_save Ajax request.
         *
         * This filter does not apply if there was a nonce or authentication failure.
         *
         * @since 4.2.0
         *
         * @param array                $response Additional information passed back to the 'saved'
         *                                       event on `wp.customize`.
         * @param WP_Customize_Manager $this     WP_Customize_Manager instance.
         */
        
$response apply_filters'customize_save_response'$response$this );

        if ( 
is_wp_error$r ) ) {
            
wp_send_json_error$response );
        } else {
            
wp_send_json_success$response );
        }
    }

    
/**
     * Save the post for the loaded changeset.
     *
     * @since 4.7.0
     *
     * @param array $args {
     *     Args for changeset post.
     *
     *     @type array  $data            Optional additional changeset data. Values will be merged on top of any existing post values.
     *     @type string $status          Post status. Optional. If supplied, the save will be transactional and a post revision will be allowed.
     *     @type string $title           Post title. Optional.
     *     @type string $date_gmt        Date in GMT. Optional.
     *     @type int    $user_id         ID for user who is saving the changeset. Optional, defaults to the current user ID.
     *     @type bool   $starter_content Whether the data is starter content. If false (default), then $starter_content will be cleared for any $data being saved.
     *     @type bool   $autosave        Whether this is a request to create an autosave revision.
     * }
     *
     * @return array|WP_Error Returns array on success and WP_Error with array data on error.
     */
    
function save_changeset_post$args = array() ) {

        
$args array_merge(
            array(
                
'status'          => null,
                
'title'           => null,
                
'data'            => array(),
                
'date_gmt'        => null,
                
'user_id'         => get_current_user_id(),
                
'starter_content' => false,
                
'autosave'        => false,
            ),
            
$args
        
);

        
$changeset_post_id       $this->changeset_post_id();
        
$existing_changeset_data = array();
        if ( 
$changeset_post_id ) {
            
$existing_status get_post_status$changeset_post_id );
            if ( 
'publish' === $existing_status || 'trash' === $existing_status ) {
                return new 
WP_Error(
                    
'changeset_already_published',
                    
__'The previous set of changes has already been published. Please try saving your current set of changes again.' ),
                    array(
                        
'next_changeset_uuid' => wp_generate_uuid4(),
                    )
                );
            }

            
$existing_changeset_data $this->get_changeset_post_data$changeset_post_id );
            if ( 
is_wp_error$existing_changeset_data ) ) {
                return 
$existing_changeset_data;
            }
        }

        
// Fail if attempting to publish but publish hook is missing.
        
if ( 'publish' === $args['status'] && false === has_action'transition_post_status''_wp_customize_publish_changeset' ) ) {
            return new 
WP_Error'missing_publish_callback' );
        }

        
// Validate date.
        
$now gmdate'Y-m-d H:i:59' );
        if ( 
$args['date_gmt'] ) {
            
$is_future_dated = ( mysql2date'U'$args['date_gmt'], false ) > mysql2date'U'$nowfalse ) );
            if ( ! 
$is_future_dated ) {
                return new 
WP_Error'not_future_date'__'You must supply a future date to schedule.' ) ); // Only future dates are allowed.
            
}

            if ( ! 
$this->is_theme_active() && ( 'future' === $args['status'] || $is_future_dated ) ) {
                return new 
WP_Error'cannot_schedule_theme_switches' ); // This should be allowed in the future, when theme is a regular setting.
            
}
            
$will_remain_auto_draft = ( ! $args['status'] && ( ! $changeset_post_id || 'auto-draft' === get_post_status$changeset_post_id ) ) );
            if ( 
$will_remain_auto_draft ) {
                return new 
WP_Error'cannot_supply_date_for_auto_draft_changeset' );
            }
        } elseif ( 
$changeset_post_id && 'future' === $args['status'] ) {

            
// Fail if the new status is future but the existing post's date is not in the future.
            
$changeset_post get_post$changeset_post_id );
            if ( 
mysql2date'U'$changeset_post->post_date_gmtfalse ) <= mysql2date'U'$nowfalse ) ) {
                return new 
WP_Error'not_future_date'__'You must supply a future date to schedule.' ) );
            }
        }

        if ( ! empty( 
$is_future_dated ) && 'publish' === $args['status'] ) {
            
$args['status'] = 'future';
        }

        
// Validate autosave param. See _wp_post_revision_fields() for why these fields are disallowed.
        
if ( $args['autosave'] ) {
            if ( 
$args['date_gmt'] ) {
                return new 
WP_Error'illegal_autosave_with_date_gmt' );
            } elseif ( 
$args['status'] ) {
                return new 
WP_Error'illegal_autosave_with_status' );
            } elseif ( 
$args['user_id'] && get_current_user_id() !== $args['user_id'] ) {
                return new 
WP_Error'illegal_autosave_with_non_current_user' );
            }
        }

        
// The request was made via wp.customize.previewer.save().
        
$update_transactionally = (bool) $args['status'];
        
$allow_revision         = (bool) $args['status'];

        
// Amend post values with any supplied data.
        
foreach ( $args['data'] as $setting_id => $setting_params ) {
            if ( 
is_array$setting_params ) && array_key_exists'value'$setting_params ) ) {
                
$this->set_post_value$setting_id$setting_params['value'] ); // Add to post values so that they can be validated and sanitized.
            
}
        }

        
// Note that in addition to post data, this will include any stashed theme mods.
        
$post_values $this->unsanitized_post_values(
            array(
                
'exclude_changeset' => true,
                
'exclude_post_data' => false,
            )
        );
        
$this->add_dynamic_settingsarray_keys$post_values ) ); // Ensure settings get created even if they lack an input value.

        /*
         * Get list of IDs for settings that have values different from what is currently
         * saved in the changeset. By skipping any values that are already the same, the
         * subset of changed settings can be passed into validate_setting_values to prevent
         * an underprivileged modifying a single setting for which they have the capability
         * from being blocked from saving. This also prevents a user from touching of the
         * previous saved settings and overriding the associated user_id if they made no change.
         */
        
$changed_setting_ids = array();
        foreach ( 
$post_values as $setting_id => $setting_value ) {
            
$setting $this->get_setting$setting_id );

            if ( 
$setting && 'theme_mod' === $setting->type ) {
                
$prefixed_setting_id $this->get_stylesheet() . '::' $setting->id;
            } else {
                
$prefixed_setting_id $setting_id;
            }

            
$is_value_changed = (
                ! isset( 
$existing_changeset_data$prefixed_setting_id ] )
                ||
                ! 
array_key_exists'value'$existing_changeset_data$prefixed_setting_id ] )
                ||
                
$existing_changeset_data$prefixed_setting_id ]['value'] !== $setting_value
            
);
            if ( 
$is_value_changed ) {
                
$changed_setting_ids[] = $setting_id;
            }
        }

        
/**
         * Fires before save validation happens.
         *
         * Plugins can add just-in-time {@see 'customize_validate_{$this->ID}'} filters
         * at this point to catch any settings registered after `customize_register`.
         * The dynamic portion of the hook name, `$this->ID` refers to the setting ID.
         *
         * @since 4.6.0
         *
         * @param WP_Customize_Manager $this WP_Customize_Manager instance.
         */
        
do_action'customize_save_validation_before'$this );

        
// Validate settings.
        
$validated_values      array_merge(
            
array_fill_keysarray_keys$args['data'] ), null ), // Make sure existence/capability checks are done on value-less setting updates.
            
$post_values
        
);
        
$setting_validities    $this->validate_setting_values(
            
$validated_values,
            array(
                
'validate_capability' => true,
                
'validate_existence'  => true,
            )
        );
        
$invalid_setting_count countarray_filter$setting_validities'is_wp_error' ) );

        
/*
         * Short-circuit if there are invalid settings the update is transactional.
         * A changeset update is transactional when a status is supplied in the request.
         */
        
if ( $update_transactionally && $invalid_setting_count ) {
            
$response = array(
                
'setting_validities' => $setting_validities,
                
/* translators: %s: number of invalid settings */
                
'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 ) ),
            );
            return new 
WP_Error'transaction_fail'''$response );
        }

        
// Obtain/merge data for changeset.
        
$original_changeset_data $this->get_changeset_post_data$changeset_post_id );
        
$data                    $original_changeset_data;
        if ( 
is_wp_error$data ) ) {
            
$data = array();
        }

        
// Ensure that all post values are included in the changeset data.
        
foreach ( $post_values as $setting_id => $post_value ) {
            if ( ! isset( 
$args['data'][ $setting_id ] ) ) {
                
$args['data'][ $setting_id ] = array();
            }
            if ( ! isset( 
$args['data'][ $setting_id ]['value'] ) ) {
                
$args['data'][ $setting_id ]['value'] = $post_value;
            }
        }

        foreach ( 
$args['data'] as $setting_id => $setting_params ) {
            
$setting $this->get_setting$setting_id );
            if ( ! 
$setting || ! $setting->check_capabilities() ) {
                continue;
            }

            
// Skip updating changeset for invalid setting values.
            
if ( isset( $setting_validities$setting_id ] ) && is_wp_error$setting_validities$setting_id ] ) ) {
                continue;
            }

            
$changeset_setting_id $setting_id;
            if ( 
'theme_mod' === $setting->type ) {
                
$changeset_setting_id sprintf'%s::%s'$this->get_stylesheet(), $setting_id );
            }

            if ( 
null === $setting_params ) {
                
// Remove setting from changeset entirely.
                
unset( $data$changeset_setting_id ] );
            } else {

                if ( ! isset( 
$data$changeset_setting_id ] ) ) {
                    
$data$changeset_setting_id ] = array();
                }

                
// Merge any additional setting params that have been supplied with the existing params.
                
$merged_setting_params array_merge$data$changeset_setting_id ], $setting_params );

                
// Skip updating setting params if unchanged (ensuring the user_id is not overwritten).
                
if ( $data$changeset_setting_id ] === $merged_setting_params ) {
                    continue;
                }

                
$data$changeset_setting_id ] = array_merge(
                    
$merged_setting_params,
                    array(
                        
'type'              => $setting->type,
                        
'user_id'           => $args['user_id'],
                        
'date_modified_gmt' => current_time'mysql'true ),
                    )
                );

                
// Clear starter_content flag in data if changeset is not explicitly being updated for starter content.
                
if ( empty( $args['starter_content'] ) ) {
                    unset( 
$data$changeset_setting_id ]['starter_content'] );
                }
            }
        }

        
$filter_context = array(
            
'uuid'          => $this->changeset_uuid(),
            
'title'         => $args['title'],
            
'status'        => $args['status'],
            
'date_gmt'      => $args['date_gmt'],
            
'post_id'       => $changeset_post_id,
            
'previous_data' => is_wp_error$original_changeset_data ) ? array() : $original_changeset_data,
            
'manager'       => $this,
        );

        
/**
         * Filters the settings' data that will be persisted into the changeset.
         *
         * Plugins may amend additional data (such as additional meta for settings) into the changeset with this filter.
         *
         * @since 4.7.0
         *
         * @param array $data Updated changeset data, mapping setting IDs to arrays containing a $value item and optionally other metadata.
         * @param array $context {
         *     Filter context.
         *
         *     @type string               $uuid          Changeset UUID.
         *     @type string               $title         Requested title for the changeset post.
         *     @type string               $status        Requested status for the changeset post.
         *     @type string               $date_gmt      Requested date for the changeset post in MySQL format and GMT timezone.
         *     @type int|false            $post_id       Post ID for the changeset, or false if it doesn't exist yet.
         *     @type array                $previous_data Previous data contained in the changeset.
         *     @type WP_Customize_Manager $manager       Manager instance.
         * }
         */
        
$data apply_filters'customize_changeset_save_data'$data$filter_context );

        
// Switch theme if publishing changes now.
        
if ( 'publish' === $args['status'] && ! $this->is_theme_active() ) {
            
// Temporarily stop previewing the theme to allow switch_themes() to operate properly.
            
$this->stop_previewing_theme();
            
switch_theme$this->get_stylesheet() );
            
update_option'theme_switched_via_customizer'true );
            
$this->start_previewing_theme();
        }

        
// Gather the data for wp_insert_post()/wp_update_post().
        
$json_options 0;
        if ( 
defined'JSON_UNESCAPED_SLASHES' ) ) {
            
$json_options |= JSON_UNESCAPED_SLASHES// Introduced in PHP 5.4. This is only to improve readability as slashes needn't be escaped in storage.
        
}
        
$json_options |= JSON_PRETTY_PRINT// Also introduced in PHP 5.4, but WP defines constant for back compat. See WP Trac #30139.
        
$post_array    = array(
            
'post_content' => wp_json_encode$data$json_options ),
        );
        if ( 
$args['title'] ) {
            
$post_array['post_title'] = $args['title'];
        }
        if ( 
$changeset_post_id ) {
            
$post_array['ID'] = $changeset_post_id;
        } else {
            
$post_array['post_type']   = 'customize_changeset';
            
$post_array['post_name']   = $this->changeset_uuid();
            
$post_array['post_status'] = 'auto-draft';
        }
        if ( 
$args['status'] ) {
            
$post_array['post_status'] = $args['status'];
        }

        
// Reset post date to now if we are publishing, otherwise pass post_date_gmt and translate for post_date.
        
if ( 'publish' === $args['status'] ) {
            
$post_array['post_date_gmt'] = '0000-00-00 00:00:00';
            
$post_array['post_date']     = '0000-00-00 00:00:00';
        } elseif ( 
$args['date_gmt'] ) {
            
$post_array['post_date_gmt'] = $args['date_gmt'];
            
$post_array['post_date']     = get_date_from_gmt$args['date_gmt'] );
        } elseif ( 
$changeset_post_id && 'auto-draft' === get_post_status$changeset_post_id ) ) {
            
/*
             * Keep bumping the date for the auto-draft whenever it is modified;
             * this extends its life, preserving it from garbage-collection via
             * wp_delete_auto_drafts().
             */
            
$post_array['post_date']     = current_time'mysql' );
            
$post_array['post_date_gmt'] = '';
        }

        
$this->store_changeset_revision $allow_revision;
        
add_filter'wp_save_post_revision_post_has_changed', array( $this'_filter_revision_post_has_changed' ), 5);

        
/*
         * Update the changeset post. The publish_customize_changeset action
         * will cause the settings in the changeset to be saved via
         * WP_Customize_Setting::save().
         */

        // Prevent content filters from corrupting JSON in post_content.
        
$has_kses = ( false !== has_filter'content_save_pre''wp_filter_post_kses' ) );
        if ( 
$has_kses ) {
            
kses_remove_filters();
        }
        
$has_targeted_link_rel_filters = ( false !== has_filter'content_save_pre''wp_targeted_link_rel' ) );
        if ( 
$has_targeted_link_rel_filters ) {
            
wp_remove_targeted_link_rel_filters();
        }

        
// Note that updating a post with publish status will trigger WP_Customize_Manager::publish_changeset_values().
        
if ( $changeset_post_id ) {
            if ( 
$args['autosave'] && 'auto-draft' !== get_post_status$changeset_post_id ) ) {
                
// See _wp_translate_postdata() for why this is required as it will use the edit_post meta capability.
                
add_filter'map_meta_cap', array( $this'grant_edit_post_capability_for_changeset' ), 10);
                
$post_array['post_ID']   = $post_array['ID'];
                
$post_array['post_type'] = 'customize_changeset';
                
$r                       wp_create_post_autosavewp_slash$post_array ) );
                
remove_filter'map_meta_cap', array( $this'grant_edit_post_capability_for_changeset' ), 10 );
            } else {
                
$post_array['edit_date'] = true// Prevent date clearing.
                
$r                       wp_update_postwp_slash$post_array ), true );

                
// Delete autosave revision for user when the changeset is updated.
                
if ( ! empty( $args['user_id'] ) ) {
                    
$autosave_draft wp_get_post_autosave$changeset_post_id$args['user_id'] );
                    if ( 
$autosave_draft ) {
                        
wp_delete_post$autosave_draft->IDtrue );
                    }
                }
            }
        } else {
            
$r wp_insert_postwp_slash$post_array ), true );
            if ( ! 
is_wp_error$r ) ) {
                
$this->_changeset_post_id $r// Update cached post ID for the loaded changeset.
            
}
        }

        
// Restore removed content filters.
        
if ( $has_kses ) {
            
kses_init_filters();
        }
        if ( 
$has_targeted_link_rel_filters ) {
            
wp_init_targeted_link_rel_filters();
        }

        
$this->_changeset_data null// Reset so WP_Customize_Manager::changeset_data() will re-populate with updated contents.

        
remove_filter'wp_save_post_revision_post_has_changed', array( $this'_filter_revision_post_has_changed' ) );

        
$response = array(
            
'setting_validities' => $setting_validities,
        );

        if ( 
is_wp_error$r ) ) {
            
$response['changeset_post_save_failure'] = $r->get_error_code();
            return new 
WP_Error'changeset_post_save_failure'''$response );
        }

        return 
$response;
    }

    
/**
     * Trash or delete a changeset post.
     *
     * The following re-formulates the logic from `wp_trash_post()` as done in
     * `wp_publish_post()`. The reason for bypassing `wp_trash_post()` is that it
     * will mutate the the `post_content` and the `post_name` when they should be
     * untouched.
     *
     * @since 4.9.0
     * @global wpdb $wpdb WordPress database abstraction object.
     * @see wp_trash_post()
     *
     * @param int|WP_Post $post The changeset post.
     * @return mixed A WP_Post object for the trashed post or an empty value on failure.
     */
    
public function trash_changeset_post$post ) {
        global 
$wpdb;

        
$post get_post$post );

        if ( ! ( 
$post instanceof WP_Post ) ) {
            return 
$post;
        }
        
$post_id $post->ID;

        if ( ! 
EMPTY_TRASH_DAYS ) {
            return 
wp_delete_post$post_idtrue );
        }

        if ( 
'trash' === get_post_status$post ) ) {
            return 
false;
        }

        
/** This filter is documented in site-inc/post.php */
        
$check apply_filters'pre_trash_post'null$post );
        if ( 
null !== $check ) {
            return 
$check;
        }

        
/** This action is documented in site-inc/post.php */
        
do_action'wp_trash_post'$post_id );

        
add_post_meta$post_id'_wp_trash_meta_status'$post->post_status );
        
add_post_meta$post_id'_wp_trash_meta_time'time() );

        
$old_status $post->post_status;
        
$new_status 'trash';
        
$wpdb->update$wpdb->posts, array( 'post_status' => $new_status ), array( 'ID' => $post->ID ) );
        
clean_post_cache$post->ID );

        
$post->post_status $new_status;
        
wp_transition_post_status$new_status$old_status$post );

        
/** This action is documented in site-inc/post.php */
        
do_action"edit_post_{$post->post_type}"$post->ID$post );

        
/** This action is documented in site-inc/post.php */
        
do_action'edit_post'$post->ID$post );

        
/** This action is documented in site-inc/post.php */
        
do_action"save_post_{$post->post_type}"$post->ID$posttrue );

        
/** This action is documented in site-inc/post.php */
        
do_action'save_post'$post->ID$posttrue );

        
/** This action is documented in site-inc/post.php */
        
do_action'wp_insert_post'$post->ID$posttrue );

        
wp_trash_post_comments$post_id );

        
/** This action is documented in site-inc/post.php */
        
do_action'trashed_post'$post_id );

        return 
$post;
    }

    
/**
     * Handle request to trash a changeset.
     *
     * @since 4.9.0
     */
    
public function handle_changeset_trash_request() {
        if ( ! 
is_user_logged_in() ) {
            
wp_send_json_error'unauthenticated' );
        }

        if ( ! 
$this->is_preview() ) {
            
wp_send_json_error'not_preview' );
        }

        if ( ! 
check_ajax_referer'trash_customize_changeset''nonce'false ) ) {
            
wp_send_json_error(
                array(
                    
'code'    => 'invalid_nonce',
                    
'message' => __'There was an authentication problem. Please reload and try again.' ),
                )
            );
        }

        
$changeset_post_id $this->changeset_post_id();

        if ( ! 
$changeset_post_id ) {
            
wp_send_json_error(
                array(
                    
'message' => __'No changes saved yet, so there is nothing to trash.' ),
                    
'code'    => 'non_existent_changeset',
                )
            );
            return;
        }

        if ( 
$changeset_post_id && ! current_user_canget_post_type_object'customize_changeset' )->cap->delete_post$changeset_post_id ) ) {
            
wp_send_json_error(
                array(
                    
'code'    => 'changeset_trash_unauthorized',
                    
'message' => __'Unable to trash changes.' ),
                )
            );
        }

        if ( 
'trash' === get_post_status$changeset_post_id ) ) {
            
wp_send_json_error(
                array(
                    
'message' => __'Changes have already been trashed.' ),
                    
'code'    => 'changeset_already_trashed',
                )
            );
            return;
        }

        
$r $this->trash_changeset_post$changeset_post_id );
        if ( ! ( 
$r instanceof WP_Post ) ) {
            
wp_send_json_error(
                array(
                    
'code'    => 'changeset_trash_failure',
                    
'message' => __'Unable to trash changes.' ),
                )
            );
        }

        
wp_send_json_success(
            array(
                
'message' => __'Changes trashed successfully.' ),
            )
        );
    }

    
/**
     * Re-map 'edit_post' meta cap for a customize_changeset post to be the same as 'customize' maps.
     *
     * There is essentially a "meta meta" cap in play here, where 'edit_post' meta cap maps to
     * the 'customize' meta cap which then maps to 'edit_theme_options'. This is currently
     * required in core for `wp_create_post_autosave()` because it will call
     * `_wp_translate_postdata()` which in turn will check if a user can 'edit_post', but the
     * the caps for the customize_changeset post type are all mapping to the meta capability.
     * This should be able to be removed once #40922 is addressed in core.
     *
     * @since 4.9.0
     * @link https://core.trac.wordpress.org/ticket/40922
     * @see WP_Customize_Manager::save_changeset_post()
     * @see _wp_translate_postdata()
     *
     * @param string[] $caps    Array of the user's capabilities.
     * @param string   $cap     Capability name.
     * @param int      $user_id The user ID.
     * @param array    $args    Adds the context to the cap. Typically the object ID.
     * @return array   Capabilities.
     */
    
public function grant_edit_post_capability_for_changeset$caps$cap$user_id$args ) {
        if ( 
'edit_post' === $cap && ! empty( $args[0] ) && 'customize_changeset' === get_post_type$args[0] ) ) {
            
$post_type_obj get_post_type_object'customize_changeset' );
            
$caps          map_meta_cap$post_type_obj->cap->$cap$user_id );
        }
        return 
$caps;
    }

    
/**
     * Marks the changeset post as being currently edited by the current user.
     *
     * @since 4.9.0
     *
     * @param int  $changeset_post_id Changeset post id.
     * @param bool $take_over Take over the changeset, default is false.
     */
    
public function set_changeset_lock$changeset_post_id$take_over false ) {
        if ( 
$changeset_post_id ) {
            
$can_override = ! (bool) get_post_meta$changeset_post_id'_edit_lock'true );

            if ( 
$take_over ) {
                
$can_override true;
            }

            if ( 
$can_override ) {
                
$lock sprintf'%s:%s'time(), get_current_user_id() );
                
update_post_meta$changeset_post_id'_edit_lock'$lock );
            } else {
                
$this->refresh_changeset_lock$changeset_post_id );
            }
        }
    }

    
/**
     * Refreshes changeset lock with the current time if current user edited the changeset before.
     *
     * @since 4.9.0
     *
     * @param int $changeset_post_id Changeset post id.
     */
    
public function refresh_changeset_lock$changeset_post_id ) {
        if ( ! 
$changeset_post_id ) {
            return;
        }
        
$lock get_post_meta$changeset_post_id'_edit_lock'true );
        
$lock explode':'$lock );

        if ( 
$lock && ! empty( $lock[1] ) ) {
            
$user_id         intval$lock[1] );
            
$current_user_id get_current_user_id();
            if ( 
$user_id === $current_user_id ) {
                
$lock sprintf'%s:%s'time(), $user_id );
                
update_post_meta$changeset_post_id'_edit_lock'$lock );
            }
        }
    }

    
/**
     * Filter heartbeat settings for the Customizer.
     *
     * @since 4.9.0
     * @param array $settings Current settings to filter.
     * @return array Heartbeat settings.
     */
    
public function add_customize_screen_to_heartbeat_settings$settings ) {
        global 
$pagenow;
        if ( 
'customize.php' === $pagenow ) {
            
$settings['screenId'] = 'customize';
        }
        return 
$settings;
    }

    
/**
     * Get lock user data.
     *
     * @since 4.9.0
     *
     * @param int $user_id User ID.
     * @return array|null User data formatted for client.
     */
    
protected function get_lock_user_data$user_id ) {
        if ( ! 
$user_id ) {
            return 
null;
        }
        
$lock_user get_userdata$user_id );
        if ( ! 
$lock_user ) {
            return 
null;
        }
        return array(
            
'id'     => $lock_user->ID,
            
'name'   => $lock_user->display_name,
            
'avatar' => get_avatar_url$lock_user->ID, array( 'size' => 128 ) ),
        );
    }

    
/**
     * Check locked changeset with heartbeat API.
     *
     * @since 4.9.0
     *
     * @param array  $response  The Heartbeat response.
     * @param array  $data      The $_POST data sent.
     * @param string $screen_id The screen id.
     * @return array The Heartbeat response.
     */
    
public function check_changeset_lock_with_heartbeat$response$data$screen_id ) {
        if ( isset( 
$data['changeset_uuid'] ) ) {
            
$changeset_post_id $this->find_changeset_post_id$data['changeset_uuid'] );
        } else {
            
$changeset_post_id $this->changeset_post_id();
        }

        if (
            
array_key_exists'check_changeset_lock'$data )
            && 
'customize' === $screen_id
            
&& $changeset_post_id
            
&& current_user_canget_post_type_object'customize_changeset' )->cap->edit_post$changeset_post_id )
        ) {
            
$lock_user_id wp_check_post_lock$changeset_post_id );

            if ( 
$lock_user_id ) {
                
$response['customize_changeset_lock_user'] = $this->get_lock_user_data$lock_user_id );
            } else {

                
// Refreshing time will ensure that the user is sitting on customizer and has not closed the customizer tab.
                
$this->refresh_changeset_lock$changeset_post_id );
            }
        }

        return 
$response;
    }

    
/**
     * Removes changeset lock when take over request is sent via Ajax.
     *
     * @since 4.9.0
     */
    
public function handle_override_changeset_lock_request() {
        if ( ! 
$this->is_preview() ) {
            
wp_send_json_error'not_preview'400 );
        }

        if ( ! 
check_ajax_referer'customize_override_changeset_lock''nonce'false ) ) {
            
wp_send_json_error(
                array(
                    
'code'    => 'invalid_nonce',
                    
'message' => __'Security check failed.' ),
                )
            );
        }

        
$changeset_post_id $this->changeset_post_id();

        if ( empty( 
$changeset_post_id ) ) {
            
wp_send_json_error(
                array(
                    
'code'    => 'no_changeset_found_to_take_over',
                    
'message' => __'No changeset found to take over' ),
                )
            );
        }

        if ( ! 
current_user_canget_post_type_object'customize_changeset' )->cap->edit_post$changeset_post_id ) ) {
            
wp_send_json_error(
                array(
                    
'code'    => 'cannot_remove_changeset_lock',
                    
'message' => __'Sorry, you are not allowed to take over.' ),
                )
            );
        }

        
$this->set_changeset_lock$changeset_post_idtrue );

        
wp_send_json_success'changeset_taken_over' );
    }

    
/**
     * Whether a changeset revision should be made.
     *
     * @since 4.7.0
     * @var bool
     */
    
protected $store_changeset_revision;

    
/**
     * Filters whether a changeset has changed to create a new revision.
     *
     * Note that this will not be called while a changeset post remains in auto-draft status.
     *
     * @since 4.7.0
     *
     * @param bool    $post_has_changed Whether the post has changed.
     * @param WP_Post $last_revision    The last revision post object.
     * @param WP_Post $post             The post object.
     *
     * @return bool Whether a revision should be made.
     */
    
public function _filter_revision_post_has_changed$post_has_changed$last_revision$post ) {
        unset( 
$last_revision );
        if ( 
'customize_changeset' === $post->post_type ) {
            
$post_has_changed $this->store_changeset_revision;
        }
        return 
$post_has_changed;
    }

    
/**
     * Publish changeset values.
     *
     * This will the values contained in a changeset, even changesets that do not
     * correspond to current manager instance. This is called by
     * `_wp_customize_publish_changeset()` when a customize_changeset post is
     * transitioned to the `publish` status. As such, this method should not be
     * called directly and instead `wp_publish_post()` should be used.
     *
     * Please note that if the settings in the changeset are for a non-activated
     * theme, the theme must first be switched to (via `switch_theme()`) before
     * invoking this method.
     *
     * @since 4.7.0
     * @see _wp_customize_publish_changeset()
     * @global wpdb $wpdb
     *
     * @param int $changeset_post_id ID for customize_changeset post. Defaults to the changeset for the current manager instance.
     * @return true|WP_Error True or error info.
     */
    
public function _publish_changeset_values$changeset_post_id ) {
        global 
$wpdb;

        
$publishing_changeset_data $this->get_changeset_post_data$changeset_post_id );
        if ( 
is_wp_error$publishing_changeset_data ) ) {
            return 
$publishing_changeset_data;
        }

        
$changeset_post get_post$changeset_post_id );

        
/*
         * Temporarily override the changeset context so that it will be read
         * in calls to unsanitized_post_values() and so that it will be available
         * on the $wp_customize object passed to hooks during the save logic.
         */
        
$previous_changeset_post_id $this->_changeset_post_id;
        
$this->_changeset_post_id   $changeset_post_id;
        
$previous_changeset_uuid    $this->_changeset_uuid;
        
$this->_changeset_uuid      $changeset_post->post_name;
        
$previous_changeset_data    $this->_changeset_data;
        
$this->_changeset_data      $publishing_changeset_data;

        
// Parse changeset data to identify theme mod settings and user IDs associated with settings to be saved.
        
$setting_user_ids   = array();
        
$theme_mod_settings = array();
        
$namespace_pattern  '/^(?P<stylesheet>.+?)::(?P<setting_id>.+)$/';
        
$matches            = array();
        foreach ( 
$this->_changeset_data as $raw_setting_id => $setting_params ) {
            
$actual_setting_id    null;
            
$is_theme_mod_setting = (
                isset( 
$setting_params['value'] )
                &&
                isset( 
$setting_params['type'] )
                &&
                
'theme_mod' === $setting_params['type']
                &&
                
preg_match$namespace_pattern$raw_setting_id$matches )
            );
            if ( 
$is_theme_mod_setting ) {
                if ( ! isset( 
$theme_mod_settings$matches['stylesheet'] ] ) ) {
                    
$theme_mod_settings$matches['stylesheet'] ] = array();
                }
                
$theme_mod_settings$matches['stylesheet'] ][ $matches['setting_id'] ] = $setting_params;

                if ( 
$this->get_stylesheet() === $matches['stylesheet'] ) {
                    
$actual_setting_id $matches['setting_id'];
                }
            } else {
                
$actual_setting_id $raw_setting_id;
            }

            
// Keep track of the user IDs for settings actually for this theme.
            
if ( $actual_setting_id && isset( $setting_params['user_id'] ) ) {
                
$setting_user_ids$actual_setting_id ] = $setting_params['user_id'];
            }
        }

        
$changeset_setting_values $this->unsanitized_post_values(
            array(
                
'exclude_post_data' => true,
                
'exclude_changeset' => false,
            )
        );
        
$changeset_setting_ids    array_keys$changeset_setting_values );
        
$this->add_dynamic_settings$changeset_setting_ids );

        
/**
         * Fires once the theme has switched in the Customizer, but before settings
         * have been saved.
         *
         * @since 3.4.0
         *
         * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
         */
        
do_action'customize_save'$this );

        
/*
         * Ensure that all settings will allow themselves to be saved. Note that
         * this is safe because the setting would have checked the capability
         * when the setting value was written into the changeset. So this is why
         * an additional capability check is not required here.
         */
        
$original_setting_capabilities = array();
        foreach ( 
$changeset_setting_ids as $setting_id ) {
            
$setting $this->get_setting$setting_id );
            if ( 
$setting && ! isset( $setting_user_ids$setting_id ] ) ) {
                
$original_setting_capabilities$setting->id ] = $setting->capability;
                
$setting->capability                           'exist';
            }
        }

        
$original_user_id get_current_user_id();
        foreach ( 
$changeset_setting_ids as $setting_id ) {
            
$setting $this->get_setting$setting_id );
            if ( 
$setting ) {
                
/*
                 * Set the current user to match the user who saved the value into
                 * the changeset so that any filters that apply during the save
                 * process will respect the original user's capabilities. This
                 * will ensure, for example, that KSES won't strip unsafe HTML
                 * when a scheduled changeset publishes via WP Cron.
                 */
                
if ( isset( $setting_user_ids$setting_id ] ) ) {
                    
wp_set_current_user$setting_user_ids$setting_id ] );
                } else {
                    
wp_set_current_user$original_user_id );
                }

                
$setting->save();
            }
        }
        
wp_set_current_user$original_user_id );

        
// Update the stashed theme mod settings, removing the active theme's stashed settings, if activated.
        
if ( did_action'switch_theme' ) ) {
            
$other_theme_mod_settings $theme_mod_settings;
            unset( 
$other_theme_mod_settings$this->get_stylesheet() ] );
            
$this->update_stashed_theme_mod_settings$other_theme_mod_settings );
        }

        
/**
         * Fires after Customize settings have been saved.
         *
         * @since 3.6.0
         *
         * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
         */
        
do_action'customize_save_after'$this );

        
// Restore original capabilities.
        
foreach ( $original_setting_capabilities as $setting_id => $capability ) {
            
$setting $this->get_setting$setting_id );
            if ( 
$setting ) {
                
$setting->capability $capability;
            }
        }

        
// Restore original changeset data.
        
$this->_changeset_data    $previous_changeset_data;
        
$this->_changeset_post_id $previous_changeset_post_id;
        
$this->_changeset_uuid    $previous_changeset_uuid;

        
/*
         * Convert all autosave revisions into their own auto-drafts so that users can be prompted to
         * restore them when a changeset is published, but they had been locked out from including
         * their changes in the changeset.
         */
        
$revisions wp_get_post_revisions$changeset_post_id, array( 'check_enabled' => false ) );
        foreach ( 
$revisions as $revision ) {
            if ( 
false !== strpos$revision->post_name"{$changeset_post_id}-autosave" ) ) {
                
$wpdb->update(
                    
$wpdb->posts,
                    array(
                        
'post_status' => 'auto-draft',
                        
'post_type'   => 'customize_changeset',
                        
'post_name'   => wp_generate_uuid4(),
                        
'post_parent' => 0,
                    ),
                    array(
                        
'ID' => $revision->ID,
                    )
                );
                
clean_post_cache$revision->ID );
            }
        }

        return 
true;
    }

    
/**
     * Update stashed theme mod settings.
     *
     * @since 4.7.0
     *
     * @param array $inactive_theme_mod_settings Mapping of stylesheet to arrays of theme mod settings.
     * @return array|false Returns array of updated stashed theme mods or false if the update failed or there were no changes.
     */
    
protected function update_stashed_theme_mod_settings$inactive_theme_mod_settings ) {
        
$stashed_theme_mod_settings get_option'customize_stashed_theme_mods' );
        if ( empty( 
$stashed_theme_mod_settings ) ) {
            
$stashed_theme_mod_settings = array();
        }

        
// Delete any stashed theme mods for the active theme since they would have been loaded and saved upon activation.
        
unset( $stashed_theme_mod_settings$this->get_stylesheet() ] );

        
// Merge inactive theme mods with the stashed theme mod settings.
        
foreach ( $inactive_theme_mod_settings as $stylesheet => $theme_mod_settings ) {
            if ( ! isset( 
$stashed_theme_mod_settings$stylesheet ] ) ) {
                
$stashed_theme_mod_settings$stylesheet ] = array();
            }

            
$stashed_theme_mod_settings$stylesheet ] = array_merge(
                
$stashed_theme_mod_settings$stylesheet ],
                
$theme_mod_settings
            
);
        }

        
$autoload false;
        
$result   update_option'customize_stashed_theme_mods'$stashed_theme_mod_settings$autoload );
        if ( ! 
$result ) {
            return 
false;
        }
        return 
$stashed_theme_mod_settings;
    }

    
/**
     * Refresh nonces for the current preview.
     *
     * @since 4.2.0
     */
    
public function refresh_nonces() {
        if ( ! 
$this->is_preview() ) {
            
wp_send_json_error'not_preview' );
        }

        
wp_send_json_success$this->get_nonces() );
    }

    
/**
     * Delete a given auto-draft changeset or the autosave revision for a given changeset or delete changeset lock.
     *
     * @since 4.9.0
     */
    
public function handle_dismiss_autosave_or_lock_request() {
        
// Calls to dismiss_user_auto_draft_changesets() and wp_get_post_autosave() require non-zero get_current_user_id().
        
if ( ! is_user_logged_in() ) {
            
wp_send_json_error'unauthenticated'401 );
        }

        if ( ! 
$this->is_preview() ) {
            
wp_send_json_error'not_preview'400 );
        }

        if ( ! 
check_ajax_referer'customize_dismiss_autosave_or_lock''nonce'false ) ) {
            
wp_send_json_error'invalid_nonce'403 );
        }

        
$changeset_post_id $this->changeset_post_id();
        
$dismiss_lock      = ! empty( $_POST['dismiss_lock'] );
        
$dismiss_autosave  = ! empty( $_POST['dismiss_autosave'] );

        if ( 
$dismiss_lock ) {
            if ( empty( 
$changeset_post_id ) && ! $dismiss_autosave ) {
                
wp_send_json_error'no_changeset_to_dismiss_lock'404 );
            }
            if ( ! 
current_user_canget_post_type_object'customize_changeset' )->cap->edit_post$changeset_post_id ) && ! $dismiss_autosave ) {
                
wp_send_json_error'cannot_remove_changeset_lock'403 );
            }

            
delete_post_meta$changeset_post_id'_edit_lock' );

            if ( ! 
$dismiss_autosave ) {
                
wp_send_json_success'changeset_lock_dismissed' );
            }
        }

        if ( 
$dismiss_autosave ) {
            if ( empty( 
$changeset_post_id ) || 'auto-draft' === get_post_status$changeset_post_id ) ) {
                
$dismissed $this->dismiss_user_auto_draft_changesets();
                if ( 
$dismissed ) {
                    
wp_send_json_success'auto_draft_dismissed' );
                } else {
                    
wp_send_json_error'no_auto_draft_to_delete'404 );
                }
            } else {
                
$revision wp_get_post_autosave$changeset_post_idget_current_user_id() );

                if ( 
$revision ) {
                    if ( ! 
current_user_canget_post_type_object'customize_changeset' )->cap->delete_post$changeset_post_id ) ) {
                        
wp_send_json_error'cannot_delete_autosave_revision'403 );
                    }

                    if ( ! 
wp_delete_post$revision->IDtrue ) ) {
                        
wp_send_json_error'autosave_revision_deletion_failure'500 );
                    } else {
                        
wp_send_json_success'autosave_revision_deleted' );
                    }
                } else {
                    
wp_send_json_error'no_autosave_revision_to_delete'404 );
                }
            }
        }

        
wp_send_json_error'unknown_error'500 );
    }

    
/**
     * Add a customize setting.
     *
     * @since 3.4.0
     * @since 4.5.0 Return added WP_Customize_Setting instance.
     *
     * @param WP_Customize_Setting|string $id   Customize Setting object, or ID.
     * @param array                       $args {
     *  Optional. Array of properties for the new WP_Customize_Setting. Default empty array.
     *
     *  @type string       $type                  Type of the setting. Default 'theme_mod'.
     *  @type string       $capability            Capability required for the setting. Default 'edit_theme_options'
     *  @type string|array $theme_supports        Theme features required to support the panel. Default is none.
     *  @type string       $default               Default value for the setting. Default is empty string.
     *  @type string       $transport             Options for rendering the live preview of changes in Theme Customizer.
     *                                            Using 'refresh' makes the change visible by reloading the whole preview.
     *                                            Using 'postMessage' allows a custom JavaScript to handle live changes.
     * @link https://developer.wordpress.org/themes/customize-api
     *                                            Default is 'refresh'
     *  @type callable     $validate_callback     Server-side validation callback for the setting's value.
     *  @type callable     $sanitize_callback     Callback to filter a Customize setting value in un-slashed form.
     *  @type callable     $sanitize_js_callback  Callback to convert a Customize PHP setting value to a value that is
     *                                            JSON serializable.
     *  @type bool         $dirty                 Whether or not the setting is initially dirty when created.
     * }
     * @return WP_Customize_Setting             The instance of the setting that was added.
     */
    
public function add_setting$id$args = array() ) {
        if ( 
$id instanceof WP_Customize_Setting ) {
            
$setting $id;
        } else {
            
$class 'WP_Customize_Setting';

            
/** This filter is documented in site-inc/class-wp-customize-manager.php */
            
$args apply_filters'customize_dynamic_setting_args'$args$id );

            
/** This filter is documented in site-inc/class-wp-customize-manager.php */
            
$class apply_filters'customize_dynamic_setting_class'$class$id$args );

            
$setting = new $class$this$id$args );
        }

        
$this->settings$setting->id ] = $setting;
        return 
$setting;
    }

    
/**
     * Register any dynamically-created settings, such as those from $_POST['customized']
     * that have no corresponding setting created.
     *
     * This is a mechanism to "wake up" settings that have been dynamically created
     * on the front end and have been sent to WordPress in `$_POST['customized']`. When WP
     * loads, the dynamically-created settings then will get created and previewed
     * even though they are not directly created statically with code.
     *
     * @since 4.2.0
     *
     * @param array $setting_ids The setting IDs to add.
     * @return array The WP_Customize_Setting objects added.
     */
    
public function add_dynamic_settings$setting_ids ) {
        
$new_settings = array();
        foreach ( 
$setting_ids as $setting_id ) {
            
// Skip settings already created
            
if ( $this->get_setting$setting_id ) ) {
                continue;
            }

            
$setting_args  false;
            
$setting_class 'WP_Customize_Setting';

            
/**
             * Filters a dynamic setting's constructor args.
             *
             * For a dynamic setting to be registered, this filter must be employed
             * to override the default false value with an array of args to pass to
             * the WP_Customize_Setting constructor.
             *
             * @since 4.2.0
             *
             * @param false|array $setting_args The arguments to the WP_Customize_Setting constructor.
             * @param string      $setting_id   ID for dynamic setting, usually coming from `$_POST['customized']`.
             */
            
$setting_args apply_filters'customize_dynamic_setting_args'$setting_args$setting_id );
            if ( 
false === $setting_args ) {
                continue;
            }

            
/**
             * Allow non-statically created settings to be constructed with custom WP_Customize_Setting subclass.
             *
             * @since 4.2.0
             *
             * @param string $setting_class WP_Customize_Setting or a subclass.
             * @param string $setting_id    ID for dynamic setting, usually coming from `$_POST['customized']`.
             * @param array  $setting_args  WP_Customize_Setting or a subclass.
             */
            
$setting_class apply_filters'customize_dynamic_setting_class'$setting_class$setting_id$setting_args );

            
$setting = new $setting_class$this$setting_id$setting_args );

            
$this->add_setting$setting );
            
$new_settings[] = $setting;
        }
        return 
$new_settings;
    }

    
/**
     * Retrieve a customize setting.
     *
     * @since 3.4.0
     *
     * @param string $id Customize Setting ID.
     * @return WP_Customize_Setting|void The setting, if set.
     */
    
public function get_setting$id ) {
        if ( isset( 
$this->settings$id ] ) ) {
            return 
$this->settings$id ];
        }
    }

    
/**
     * Remove a customize setting.
     *
     * @since 3.4.0
     *
     * @param string $id Customize Setting ID.
     */
    
public function remove_setting$id ) {
        unset( 
$this->settings$id ] );
    }

    
/**
     * Add a customize panel.
     *
     * @since 4.0.0
     * @since 4.5.0 Return added WP_Customize_Panel instance.
     *
     * @param WP_Customize_Panel|string $id   Customize Panel object, or Panel ID.
     * @param array                     $args {
     *  Optional. Array of properties for the new Panel object. Default empty array.
     *  @type int          $priority              Priority of the panel, defining the display order of panels and sections.
     *                                            Default 160.
     *  @type string       $capability            Capability required for the panel. Default `edit_theme_options`
     *  @type string|array $theme_supports        Theme features required to support the panel.
     *  @type string       $title                 Title of the panel to show in UI.
     *  @type string       $description           Description to show in the UI.
     *  @type string       $type                  Type of the panel.
     *  @type callable     $active_callback       Active callback.
     * }
     * @return WP_Customize_Panel             The instance of the panel that was added.
     */
    
public function add_panel$id$args = array() ) {
        if ( 
$id instanceof WP_Customize_Panel ) {
            
$panel $id;
        } else {
            
$panel = new WP_Customize_Panel$this$id$args );
        }

        
$this->panels$panel->id ] = $panel;
        return 
$panel;
    }

    
/**
     * Retrieve a customize panel.
     *
     * @since 4.0.0
     *
     * @param string $id Panel ID to get.
     * @return WP_Customize_Panel|void Requested panel instance, if set.
     */
    
public function get_panel$id ) {
        if ( isset( 
$this->panels$id ] ) ) {
            return 
$this->panels$id ];
        }
    }

    
/**
     * Remove a customize panel.
     *
     * @since 4.0.0
     *
     * @param string $id Panel ID to remove.
     */
    
public function remove_panel$id ) {
        
// Removing core components this way is _doing_it_wrong().
        
if ( in_array$id$this->componentstrue ) ) {
            
/* translators: 1: panel id, 2: link to 'customize_loaded_components' filter reference */
            
$message sprintf(
                
__'Removing %1$s manually will cause PHP warnings. Use the %2$s filter instead.' ),
                
$id,
                
'<a href="' esc_url'https://developer.wordpress.org/reference/hooks/customize_loaded_components/' ) . '"><code>customize_loaded_components</code></a>'
            
);

            
_doing_it_wrong__METHOD__$message'4.5.0' );
        }
        unset( 
$this->panels$id ] );
    }

    
/**
     * Register a customize panel type.
     *
     * Registered types are eligible to be rendered via JS and created dynamically.
     *
     * @since 4.3.0
     *
     * @see WP_Customize_Panel
     *
     * @param string $panel Name of a custom panel which is a subclass of WP_Customize_Panel.
     */
    
public function register_panel_type$panel ) {
        
$this->registered_panel_types[] = $panel;
    }

    
/**
     * Render JS templates for all registered panel types.
     *
     * @since 4.3.0
     */
    
public function render_panel_templates() {
        foreach ( 
$this->registered_panel_types as $panel_type ) {
            
$panel = new $panel_type$this'temp', array() );
            
$panel->print_template();
        }
    }

    
/**
     * Add a customize section.
     *
     * @since 3.4.0
     * @since 4.5.0 Return added WP_Customize_Section instance.
     *
     * @param WP_Customize_Section|string $id   Customize Section object, or Section ID.
     * @param array                     $args {
     *  Optional. Array of properties for the new Section object. Default empty array.
     *  @type int          $priority              Priority of the section, defining the display order of panels and sections.
     *                                            Default 160.
     *  @type string       $panel                 The panel this section belongs to (if any). Default empty.
     *  @type string       $capability            Capability required for the section. Default 'edit_theme_options'
     *  @type string|array $theme_supports        Theme features required to support the section.
     *  @type string       $title                 Title of the section to show in UI.
     *  @type string       $description           Description to show in the UI.
     *  @type string       $type                  Type of the section.
     *  @type callable     $active_callback       Active callback.
     *  @type bool         $description_hidden    Hide the description behind a help icon, instead of inline above the first control. Default false.
     * }
     * @return WP_Customize_Section             The instance of the section that was added.
     */
    
public function add_section$id$args = array() ) {
        if ( 
$id instanceof WP_Customize_Section ) {
            
$section $id;
        } else {
            
$section = new WP_Customize_Section$this$id$args );
        }

        
$this->sections$section->id ] = $section;
        return 
$section;
    }

    
/**
     * Retrieve a customize section.
     *
     * @since 3.4.0
     *
     * @param string $id Section ID.
     * @return WP_Customize_Section|void The section, if set.
     */
    
public function get_section$id ) {
        if ( isset( 
$this->sections$id ] ) ) {
            return 
$this->sections$id ];
        }
    }

    
/**
     * Remove a customize section.
     *
     * @since 3.4.0
     *
     * @param string $id Section ID.
     */
    
public function remove_section$id ) {
        unset( 
$this->sections$id ] );
    }

    
/**
     * Register a customize section type.
     *
     * Registered types are eligible to be rendered via JS and created dynamically.
     *
     * @since 4.3.0
     *
     * @see WP_Customize_Section
     *
     * @param string $section Name of a custom section which is a subclass of WP_Customize_Section.
     */
    
public function register_section_type$section ) {
        
$this->registered_section_types[] = $section;
    }

    
/**
     * Render JS templates for all registered section types.
     *
     * @since 4.3.0
     */
    
public function render_section_templates() {
        foreach ( 
$this->registered_section_types as $section_type ) {
            
$section = new $section_type$this'temp', array() );
            
$section->print_template();
        }
    }

    
/**
     * Add a customize control.
     *
     * @since 3.4.0
     * @since 4.5.0 Return added WP_Customize_Control instance.
     *
     * @param WP_Customize_Control|string $id   Customize Control object, or ID.
     * @param array                       $args {
     *  Optional. Array of properties for the new Control object. Default empty array.
     *
     *  @type array        $settings              All settings tied to the control. If undefined, defaults to `$setting`.
     *                                            IDs in the array correspond to the ID of a registered `WP_Customize_Setting`.
     *  @type string       $setting               The primary setting for the control (if there is one). Default is 'default'.
     *  @type string       $capability            Capability required to use this control. Normally derived from `$settings`.
     *  @type int          $priority              Order priority to load the control. Default 10.
     *  @type string       $section               The section this control belongs to. Default empty.
     *  @type string       $label                 Label for the control. Default empty.
     *  @type string       $description           Description for the control. Default empty.
     *  @type array        $choices               List of choices for 'radio' or 'select' type controls, where values
     *                                            are the keys, and labels are the values. Default empty array.
     *  @type array        $input_attrs           List of custom input attributes for control output, where attribute
     *                                            names are the keys and values are the values. Default empty array.
     *  @type bool         $allow_addition        Show UI for adding new content, currently only used for the
     *                                            dropdown-pages control. Default false.
     *  @type string       $type                  The type of the control. Default 'text'.
     *  @type callback     $active_callback       Active callback.
     * }
     * @return WP_Customize_Control             The instance of the control that was added.
     */
    
public function add_control$id$args = array() ) {
        if ( 
$id instanceof WP_Customize_Control ) {
            
$control $id;
        } else {
            
$control = new WP_Customize_Control$this$id$args );
        }

        
$this->controls$control->id ] = $control;
        return 
$control;
    }

    
/**
     * Retrieve a customize control.
     *
     * @since 3.4.0
     *
     * @param string $id ID of the control.
     * @return WP_Customize_Control|void The control object, if set.
     */
    
public function get_control$id ) {
        if ( isset( 
$this->controls$id ] ) ) {
            return 
$this->controls$id ];
        }
    }

    
/**
     * Remove a customize control.
     *
     * @since 3.4.0
     *
     * @param string $id ID of the control.
     */
    
public function remove_control$id ) {
        unset( 
$this->controls$id ] );
    }

    
/**
     * Register a customize control type.
     *
     * Registered types are eligible to be rendered via JS and created dynamically.
     *
     * @since 4.1.0
     *
     * @param string $control Name of a custom control which is a subclass of
     *                        WP_Customize_Control.
     */
    
public function register_control_type$control ) {
        
$this->registered_control_types[] = $control;
    }

    
/**
     * Render JS templates for all registered control types.
     *
     * @since 4.1.0
     */
    
public function render_control_templates() {
        if ( 
$this->branching() ) {
            
$l10n = array(
                
/* translators: %s: User who is customizing the changeset in customizer. */
                
'locked'                => __'%s is already customizing this changeset. Please wait until they are done to try customizing. Your latest changes have been autosaved.' ),
                
/* translators: %s: User who is customizing the changeset in customizer. */
                
'locked_allow_override' => __'%s is already customizing this changeset. Do you want to take over?' ),
            );
        } else {
            
$l10n = array(
                
/* translators: %s: User who is customizing the changeset in customizer. */
                
'locked'                => __'%s is already customizing this site. Please wait until they are done to try customizing. Your latest changes have been autosaved.' ),
                
/* translators: %s: User who is customizing the changeset in customizer. */
                
'locked_allow_override' => __'%s is already customizing this site. Do you want to take over?' ),
            );
        }

        foreach ( 
$this->registered_control_types as $control_type ) {
            
$control = new $control_type(
                
$this,
                
'temp',
                array(
                    
'settings' => array(),
                )
            );
            
$control->print_template();
        }
        
?>

        <script type="text/html" id="tmpl-customize-control-default-content">
            <#
            var inputId = _.uniqueId( 'customize-control-default-input-' );
            var descriptionId = _.uniqueId( 'customize-control-default-description-' );
            var describedByAttr = data.description ? ' aria-describedby="' + descriptionId + '" ' : '';
            #>
            <# switch ( data.type ) {
                case 'checkbox': #>
                    <span class="customize-inside-control-row">
                        <input
                            id="{{ inputId }}"
                            {{{ describedByAttr }}}
                            type="checkbox"
                            value="{{ data.value }}"
                            data-customize-setting-key-link="default"
                        >
                        <label for="{{ inputId }}">
                            {{ data.label }}
                        </label>
                        <# if ( data.description ) { #>
                            <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
                        <# } #>
                    </span>
                    <#
                    break;
                case 'radio':
                    if ( ! data.choices ) {
                        return;
                    }
                    #>
                    <# if ( data.label ) { #>
                        <label for="{{ inputId }}" class="customize-control-title">
                            {{ data.label }}
                        </label>
                    <# } #>
                    <# if ( data.description ) { #>
                        <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
                    <# } #>
                    <# _.each( data.choices, function( val, key ) { #>
                        <span class="customize-inside-control-row">
                            <#
                            var value, text;
                            if ( _.isObject( val ) ) {
                                value = val.value;
                                text = val.text;
                            } else {
                                value = key;
                                text = val;
                            }
                            #>
                            <input
                                id="{{ inputId + '-' + value }}"
                                type="radio"
                                value="{{ value }}"
                                name="{{ inputId }}"
                                data-customize-setting-key-link="default"
                                {{{ describedByAttr }}}
                            >
                            <label for="{{ inputId + '-' + value }}">{{ text }}</label>
                        </span>
                    <# } ); #>
                    <#
                    break;
                default:
                    #>
                    <# if ( data.label ) { #>
                        <label for="{{ inputId }}" class="customize-control-title">
                            {{ data.label }}
                        </label>
                    <# } #>
                    <# if ( data.description ) { #>
                        <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
                    <# } #>

                    <#
                    var inputAttrs = {
                        id: inputId,
                        'data-customize-setting-key-link': 'default'
                    };
                    if ( 'textarea' === data.type ) {
                        inputAttrs.rows = '5';
                    } else if ( 'button' === data.type ) {
                        inputAttrs['class'] = 'button button-secondary';
                        inputAttrs.type = 'button';
                    } else {
                        inputAttrs.type = data.type;
                    }
                    if ( data.description ) {
                        inputAttrs['aria-describedby'] = descriptionId;
                    }
                    _.extend( inputAttrs, data.input_attrs );
                    #>

                    <# if ( 'button' === data.type ) { #>
                        <button
                            <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
                                {{{ key }}}="{{ value }}"
                            <# } ); #>
                        >{{ inputAttrs.value }}</button>
                    <# } else if ( 'textarea' === data.type ) { #>
                        <textarea
                            <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
                                {{{ key }}}="{{ value }}"
                            <# }); #>
                        >{{ inputAttrs.value }}</textarea>
                    <# } else if ( 'select' === data.type ) { #>
                        <# delete inputAttrs.type; #>
                        <select
                            <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
                                {{{ key }}}="{{ value }}"
                            <# }); #>
                            >
                            <# _.each( data.choices, function( val, key ) { #>
                                <#
                                var value, text;
                                if ( _.isObject( val ) ) {
                                    value = val.value;
                                    text = val.text;
                                } else {
                                    value = key;
                                    text = val;
                                }
                                #>
                                <option value="{{ value }}">{{ text }}</option>
                            <# } ); #>
                        </select>
                    <# } else { #>
                        <input
                            <# _.each( _.extend( inputAttrs ), function( value, key ) { #>
                                {{{ key }}}="{{ value }}"
                            <# }); #>
                            >
                    <# } #>
            <# } #>
        </script>

        <script type="text/html" id="tmpl-customize-notification">
            <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 }}">
                <div class="notification-message">{{{ data.message || data.code }}}</div>
                <# if ( data.dismissible ) { #>
                    <button type="button" class="notice-dismiss"><span class="screen-reader-text"><?php _e'Dismiss' ); ?></span></button>
                <# } #>
            </li>
        </script>

        <script type="text/html" id="tmpl-customize-changeset-locked-notification">
            <li class="notice notice-{{ data.type || 'info' }} {{ data.containerClasses || '' }}" data-code="{{ data.code }}" data-type="{{ data.type }}">
                <div class="notification-message customize-changeset-locked-message">
                    <img class="customize-changeset-locked-avatar" src="{{ data.lockUser.avatar }}" alt="{{ data.lockUser.name }}">
                    <p class="currently-editing">
                        <# if ( data.message ) { #>
                            {{{ data.message }}}
                        <# } else if ( data.allowOverride ) { #>
                            <?php
                            
echo esc_htmlsprintf$l10n['locked_allow_override'], '{{ data.lockUser.name }}' ) );
                            
?>
                        <# } else { #>
                            <?php
                            
echo esc_htmlsprintf$l10n['locked'], '{{ data.lockUser.name }}' ) );
                            
?>
                        <# } #>
                    </p>
                    <p class="notice notice-error notice-alt" hidden></p>
                    <p class="action-buttons">
                        <# if ( data.returnUrl !== data.previewUrl ) { #>
                            <a class="button customize-notice-go-back-button" href="{{ data.returnUrl }}"><?php _e'Go back' ); ?></a>
                        <# } #>
                        <a class="button customize-notice-preview-button" href="{{ data.frontendPreviewUrl }}"><?php _e'Preview' ); ?></a>
                        <# if ( data.allowOverride ) { #>
                            <button class="button button-primary wp-tab-last customize-notice-take-over-button"><?php _e'Take over' ); ?></button>
                        <# } #>
                    </p>
                </div>
            </li>
        </script>

        <script type="text/html" id="tmpl-customize-code-editor-lint-error-notification">
            <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 }}">
                <div class="notification-message">{{{ data.message || data.code }}}</div>

                <p>
                    <# var elementId = 'el-' + String( Math.random() ); #>
                    <input id="{{ elementId }}" type="checkbox">
                    <label for="{{ elementId }}"><?php _e'Update anyway, even though it might break your site?' ); ?></label>
                </p>
            </li>
        </script>

        <?php
        
/* The following template is obsolete in core but retained for plugins. */
        
?>
        <script type="text/html" id="tmpl-customize-control-notifications">
            <ul>
                <# _.each( data.notifications, function( notification ) { #>
                    <li class="notice notice-{{ notification.type || 'info' }} {{ data.altNotice ? 'notice-alt' : '' }}" data-code="{{ notification.code }}" data-type="{{ notification.type }}">{{{ notification.message || notification.code }}}</li>
                <# } ); #>
            </ul>
        </script>

        <script type="text/html" id="tmpl-customize-preview-link-control" >
            <# var elementPrefix = _.uniqueId( 'el' ) + '-' #>
            <p class="customize-control-title">
                <?php esc_html_e'Share Preview Link' ); ?>
            </p>
            <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>
            <div class="customize-control-notifications-container"></div>
            <div class="preview-link-wrapper">
                <label for="{{ elementPrefix }}customize-preview-link-input" class="screen-reader-text"><?php esc_html_e'Preview Link' ); ?></label>
                <a href="" target="">
                    <span class="preview-control-element" data-component="url"></span>
                    <span class="screen-reader-text"><?php _e'(opens in a new tab)' ); ?></span>
                </a>
                <input id="{{ elementPrefix }}customize-preview-link-input" readonly tabindex="-1" class="preview-control-element" data-component="input">
                <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>
            </div>
        </script>
        <script type="text/html" id="tmpl-customize-selected-changeset-status-control">
            <# var inputId = _.uniqueId( 'customize-selected-changeset-status-control-input-' ); #>
            <# var descriptionId = _.uniqueId( 'customize-selected-changeset-status-control-description-' ); #>
            <# if ( data.label ) { #>
                <label for="{{ inputId }}" class="customize-control-title">{{ data.label }}</label>
            <# } #>
            <# if ( data.description ) { #>
                <span id="{{ descriptionId }}" class="description customize-control-description">{{{ data.description }}}</span>
            <# } #>
            <# _.each( data.choices, function( choice ) { #>
                <# var choiceId = inputId + '-' + choice.status; #>
                <span class="customize-inside-control-row">
                    <input id="{{ choiceId }}" type="radio" value="{{ choice.status }}" name="{{ inputId }}" data-customize-setting-key-link="default">
                    <label for="{{ choiceId }}">{{ choice.label }}</label>
                </span>
            <# } ); #>
        </script>
        <?php
    
}

    
/**
     * Helper function to compare two objects by priority, ensuring sort stability via instance_number.
     *
     * @since 3.4.0
     * @deprecated 4.7.0 Use wp_list_sort()
     *
     * @param WP_Customize_Panel|WP_Customize_Section|WP_Customize_Control $a Object A.
     * @param WP_Customize_Panel|WP_Customize_Section|WP_Customize_Control $b Object B.
     * @return int
     */
    
protected function _cmp_priority$a$b ) {
        
_deprecated_function__METHOD__'4.7.0''wp_list_sort' );

        if ( 
$a->priority === $b->priority ) {
            return 
$a->instance_number $b->instance_number;
        } else {
            return 
$a->priority $b->priority;
        }
    }

    
/**
     * Prepare panels, sections, and controls.
     *
     * For each, check if required related components exist,
     * whether the user has the necessary capabilities,
     * and sort by priority.
     *
     * @since 3.4.0
     */
    
public function prepare_controls() {

        
$controls       = array();
        
$this->controls wp_list_sort(
            
$this->controls,
            array(
                
'priority'        => 'ASC',
                
'instance_number' => 'ASC',
            ),
            
'ASC',
            
true
        
);

        foreach ( 
$this->controls as $id => $control ) {
            if ( ! isset( 
$this->sections$control->section ] ) || ! $control->check_capabilities() ) {
                continue;
            }

            
$this->sections$control->section ]->controls[] = $control;
            
$controls$id ]                                 = $control;
        }
        
$this->controls $controls;

        
// Prepare sections.
        
$this->sections wp_list_sort(
            
$this->sections,
            array(
                
'priority'        => 'ASC',
                
'instance_number' => 'ASC',
            ),
            
'ASC',
            
true
        
);
        
$sections       = array();

        foreach ( 
$this->sections as $section ) {
            if ( ! 
$section->check_capabilities() ) {
                continue;
            }

            
$section->controls wp_list_sort(
                
$section->controls,
                array(
                    
'priority'        => 'ASC',
                    
'instance_number' => 'ASC',
                )
            );

            if ( ! 
$section->panel ) {
                
// Top-level section.
                
$sections$section->id ] = $section;
            } else {
                
// This section belongs to a panel.
                
if ( isset( $this->panels $section->panel ] ) ) {
                    
$this->panels$section->panel ]->sections$section->id ] = $section;
                }
            }
        }
        
$this->sections $sections;

        
// Prepare panels.
        
$this->panels wp_list_sort(
            
$this->panels,
            array(
                
'priority'        => 'ASC',
                
'instance_number' => 'ASC',
            ),
            
'ASC',
            
true
        
);
        
$panels       = array();

        foreach ( 
$this->panels as $panel ) {
            if ( ! 
$panel->check_capabilities() ) {
                continue;
            }

            
$panel->sections      wp_list_sort(
                
$panel->sections,
                array(
                    
'priority'        => 'ASC',
                    
'instance_number' => 'ASC',
                ),
                
'ASC',
                
true
            
);
            
$panels$panel->id ] = $panel;
        }
        
$this->panels $panels;

        
// Sort panels and top-level sections together.
        
$this->containers array_merge$this->panels$this->sections );
        
$this->containers wp_list_sort(
            
$this->containers,
            array(
                
'priority'        => 'ASC',
                
'instance_number' => 'ASC',
            ),
            
'ASC',
            
true
        
);
    }

    
/**
     * Enqueue scripts for customize controls.
     *
     * @since 3.4.0
     */
    
public function enqueue_control_scripts() {
        foreach ( 
$this->controls as $control ) {
            
$control->enqueue();
        }

        if ( ! 
is_multisite() && ( current_user_can'install_themes' ) || current_user_can'update_themes' ) || current_user_can'delete_themes' ) ) ) {
            
wp_enqueue_script'updates' );
            
wp_localize_script(
                
'updates',
                
'_wpUpdatesItemCounts',
                array(
                    
'totals' => wp_get_update_data(),
                )
            );
        }
    }

    
/**
     * Determine whether the user agent is iOS.
     *
     * @since 4.4.0
     *
     * @return bool Whether the user agent is iOS.
     */
    
public function is_ios() {
        return 
wp_is_mobile() && preg_match'/iPad|iPod|iPhone/'$_SERVER['HTTP_USER_AGENT'] );
    }

    
/**
     * Get the template string for the Customizer pane document title.
     *
     * @since 4.4.0
     *
     * @return string The template string for the document title.
     */
    
public function get_document_title_template() {
        if ( 
$this->is_theme_active() ) {
            
/* translators: %s: document title from the preview */
            
$document_title_tmpl __'Customize: %s' );
        } else {
            
/* translators: %s: document title from the preview */
            
$document_title_tmpl __'Live Preview: %s' );
        }
        
$document_title_tmpl html_entity_decode$document_title_tmplENT_QUOTES'UTF-8' ); // Because exported to JS and assigned to document.title.
        
return $document_title_tmpl;
    }

    
/**
     * Set the initial URL to be previewed.
     *
     * URL is validated.
     *
     * @since 4.4.0
     *
     * @param string $preview_url URL to be previewed.
     */
    
public function set_preview_url$preview_url ) {
        
$preview_url       esc_url_raw$preview_url );
        
$this->preview_url wp_validate_redirect$preview_urlhome_url'/' ) );
    }

    
/**
     * Get the initial URL to be previewed.
     *
     * @since 4.4.0
     *
     * @return string URL being previewed.
     */
    
public function get_preview_url() {
        if ( empty( 
$this->preview_url ) ) {
            
$preview_url home_url'/' );
        } else {
            
$preview_url $this->preview_url;
        }
        return 
$preview_url;
    }

    
/**
     * Determines whether the admin and the frontend are on different domains.
     *
     * @since 4.7.0
     *
     * @return bool Whether cross-domain.
     */
    
public function is_cross_domain() {
        
$admin_origin wp_parse_urladmin_url() );
        
$home_origin  wp_parse_urlhome_url() );
        
$cross_domain = ( strtolower$admin_origin['host'] ) !== strtolower$home_origin['host'] ) );
        return 
$cross_domain;
    }

    
/**
     * Get URLs allowed to be previewed.
     *
     * If the front end and the admin are served from the same domain, load the
     * preview over ssl if the Customizer is being loaded over ssl. This avoids
     * insecure content warnings. This is not attempted if the admin and front end
     * are on different domains to avoid the case where the front end doesn't have
     * ssl certs. Domain mapping plugins can allow other urls in these conditions
     * using the customize_allowed_urls filter.
     *
     * @since 4.7.0
     *
     * @returns array Allowed URLs.
     */
    
public function get_allowed_urls() {
        
$allowed_urls = array( home_url'/' ) );

        if ( 
is_ssl() && ! $this->is_cross_domain() ) {
            
$allowed_urls[] = home_url'/''https' );
        }

        
/**
         * Filters the list of URLs allowed to be clicked and followed in the Customizer preview.
         *
         * @since 3.4.0
         *
         * @param string[] $allowed_urls An array of allowed URLs.
         */
        
$allowed_urls array_uniqueapply_filters'customize_allowed_urls'$allowed_urls ) );

        return 
$allowed_urls;
    }

    
/**
     * Get messenger channel.
     *
     * @since 4.7.0
     *
     * @return string Messenger channel.
     */
    
public function get_messenger_channel() {
        return 
$this->messenger_channel;
    }

    
/**
     * Set URL to link the user to when closing the Customizer.
     *
     * URL is validated.
     *
     * @since 4.4.0
     *
     * @param string $return_url URL for return link.
     */
    
public function set_return_url$return_url ) {
        
$return_url       esc_url_raw$return_url );
        
$return_url       remove_query_argwp_removable_query_args(), $return_url );
        
$return_url       wp_validate_redirect$return_url );
        
$this->return_url $return_url;
    }

    
/**
     * Get URL to link the user to when closing the Customizer.
     *
     * @since 4.4.0
     *
     * @return string URL for link to close Customizer.
     */
    
public function get_return_url() {
        
$referer                    wp_get_referer();
        
$excluded_referer_basenames = array( 'customize.php''wp-login.php' );

        if ( 
$this->return_url ) {
            
$return_url $this->return_url;
        } elseif ( 
$referer && ! in_arraybasenameparse_url$refererPHP_URL_PATH ) ), $excluded_referer_basenamestrue ) ) {
            
$return_url $referer;
        } elseif ( 
$this->preview_url ) {
            
$return_url $this->preview_url;
        } else {
            
$return_url home_url'/' );
        }
        return 
$return_url;
    }

    
/**
     * Set the autofocused constructs.
     *
     * @since 4.4.0
     *
     * @param array $autofocus {
     *     Mapping of 'panel', 'section', 'control' to the ID which should be autofocused.
     *
     *     @type string [$control]  ID for control to be autofocused.
     *     @type string [$section]  ID for section to be autofocused.
     *     @type string [$panel]    ID for panel to be autofocused.
     * }
     */
    
public function set_autofocus$autofocus ) {
        
$this->autofocus array_filterwp_array_slice_assoc$autofocus, array( 'panel''section''control' ) ), 'is_string' );
    }

    
/**
     * Get the autofocused constructs.
     *
     * @since 4.4.0
     *
     * @return array {
     *     Mapping of 'panel', 'section', 'control' to the ID which should be autofocused.
     *
     *     @type string [$control]  ID for control to be autofocused.
     *     @type string [$section]  ID for section to be autofocused.
     *     @type string [$panel]    ID for panel to be autofocused.
     * }
     */
    
public function get_autofocus() {
        return 
$this->autofocus;
    }

    
/**
     * Get nonces for the Customizer.
     *
     * @since 4.5.0
     *
     * @return array Nonces.
     */
    
public function get_nonces() {
        
$nonces = array(
            
'save'                     => wp_create_nonce'save-customize_' $this->get_stylesheet() ),
            
'preview'                  => wp_create_nonce'preview-customize_' $this->get_stylesheet() ),
            
'switch_themes'            => wp_create_nonce'switch_themes' ),
            
'dismiss_autosave_or_lock' => wp_create_nonce'customize_dismiss_autosave_or_lock' ),
            
'override_lock'            => wp_create_nonce'customize_override_changeset_lock' ),
            
'trash'                    => wp_create_nonce'trash_customize_changeset' ),
        );

        
/**
         * Filters nonces for Customizer.
         *
         * @since 4.2.0
         *
         * @param string[]             $nonces Array of refreshed nonces for save and
         *                                     preview actions.
         * @param WP_Customize_Manager $this   WP_Customize_Manager instance.
         */
        
$nonces apply_filters'customize_refresh_nonces'$nonces$this );

        return 
$nonces;
    }

    
/**
     * Print JavaScript settings for parent window.
     *
     * @since 4.4.0
     */
    
public function customize_pane_settings() {

        
$login_url add_query_arg(
            array(
                
'interim-login'   => 1,
                
'customize-login' => 1,
            ),
            
wp_login_url()
        );

        
// Ensure dirty flags are set for modified settings.
        
foreach ( array_keys$this->unsanitized_post_values() ) as $setting_id ) {
            
$setting $this->get_setting$setting_id );
            if ( 
$setting ) {
                
$setting->dirty true;
            }
        }

        
$autosave_revision_post  null;
        
$autosave_autodraft_post null;
        
$changeset_post_id       $this->changeset_post_id();
        if ( ! 
$this->saved_starter_content_changeset && ! $this->autosaved() ) {
            if ( 
$changeset_post_id ) {
                if ( 
is_user_logged_in() ) {
                    
$autosave_revision_post wp_get_post_autosave$changeset_post_idget_current_user_id() );
                }
            } else {
                
$autosave_autodraft_posts $this->get_changeset_posts(
                    array(
                        
'posts_per_page'            => 1,
                        
'post_status'               => 'auto-draft',
                        
'exclude_restore_dismissed' => true,
                    )
                );
                if ( ! empty( 
$autosave_autodraft_posts ) ) {
                    
$autosave_autodraft_post array_shift$autosave_autodraft_posts );
                }
            }
        }

        
$current_user_can_publish current_user_canget_post_type_object'customize_changeset' )->cap->publish_posts );

        
// @todo Include all of the status labels here from script-loader.php, and then allow it to be filtered.
        
$status_choices = array();
        if ( 
$current_user_can_publish ) {
            
$status_choices[] = array(
                
'status' => 'publish',
                
'label'  => __'Publish' ),
            );
        }
        
$status_choices[] = array(
            
'status' => 'draft',
            
'label'  => __'Save Draft' ),
        );
        if ( 
$current_user_can_publish ) {
            
$status_choices[] = array(
                
'status' => 'future',
                
'label'  => _x'Schedule''customizer changeset action/button label' ),
            );
        }

        
// Prepare Customizer settings to pass to JavaScript.
        
$changeset_post null;
        if ( 
$changeset_post_id ) {
            
$changeset_post get_post$changeset_post_id );
        }

        
// Determine initial date to be at present or future, not past.
        
$current_time current_time'mysql'false );
        
$initial_date $current_time;
        if ( 
$changeset_post ) {
            
$initial_date get_the_time'Y-m-d H:i:s'$changeset_post->ID );
            if ( 
$initial_date $current_time ) {
                
$initial_date $current_time;
            }
        }

        
$lock_user_id false;
        if ( 
$this->changeset_post_id() ) {
            
$lock_user_id wp_check_post_lock$this->changeset_post_id() );
        }

        
$settings = array(
            
'changeset'              => array(
                
'uuid'                  => $this->changeset_uuid(),
                
'branching'             => $this->branching(),
                
'autosaved'             => $this->autosaved(),
                
'hasAutosaveRevision'   => ! empty( $autosave_revision_post ),
                
'latestAutoDraftUuid'   => $autosave_autodraft_post $autosave_autodraft_post->post_name null,
                
'status'                => $changeset_post $changeset_post->post_status '',
                
'currentUserCanPublish' => $current_user_can_publish,
                
'publishDate'           => $initial_date,
                
'statusChoices'         => $status_choices,
                
'lockUser'              => $lock_user_id $this->get_lock_user_data$lock_user_id ) : null,
            ),
            
'initialServerDate'      => $current_time,
            
'dateFormat'             => get_option'date_format' ),
            
'timeFormat'             => get_option'time_format' ),
            
'initialServerTimestamp' => floormicrotimetrue ) * 1000 ),
            
'initialClientTimestamp' => -1// To be set with JS below.
            
'timeouts'               => array(
                
'windowRefresh'           => 250,
                
'changesetAutoSave'       => AUTOSAVE_INTERVAL 1000,
                
'keepAliveCheck'          => 2500,
                
'reflowPaneContents'      => 100,
                
'previewFrameSensitivity' => 2000,
            ),
            
'theme'                  => array(
                
'stylesheet'  => $this->get_stylesheet(),
                
'active'      => $this->is_theme_active(),
                
'_canInstall' => current_user_can'install_themes' ),
            ),
            
'url'                    => array(
                
'preview'       => esc_url_raw$this->get_preview_url() ),
                
'return'        => esc_url_raw$this->get_return_url() ),
                
'parent'        => esc_url_rawadmin_url() ),
                
'activated'     => esc_url_rawhome_url'/' ) ),
                
'ajax'          => esc_url_rawadmin_url'admin-ajax.php''relative' ) ),
                
'allowed'       => array_map'esc_url_raw'$this->get_allowed_urls() ),
                
'isCrossDomain' => $this->is_cross_domain(),
                
'home'          => esc_url_rawhome_url'/' ) ),
                
'login'         => esc_url_raw$login_url ),
            ),
            
'browser'                => array(
                
'mobile' => wp_is_mobile(),
                
'ios'    => $this->is_ios(),
            ),
            
'panels'                 => array(),
            
'sections'               => array(),
            
'nonce'                  => $this->get_nonces(),
            
'autofocus'              => $this->get_autofocus(),
            
'documentTitleTmpl'      => $this->get_document_title_template(),
            
'previewableDevices'     => $this->get_previewable_devices(),
            
'l10n'                   => array(
                
'confirmDeleteTheme'   => __'Are you sure you want to delete this theme?' ),
                
/* translators: %d: number of theme search results, which cannot currently consider singular vs. plural forms */
                
'themeSearchResults'   => __'%d themes found' ),
                
/* translators: %d: number of themes being displayed, which cannot currently consider singular vs. plural forms */
                
'announceThemeCount'   => __'Displaying %d themes' ),
                
/* translators: %s: theme name */
                
'announceThemeDetails' => __'Showing details for theme: %s' ),
            ),
        );

        
// Temporarily disable installation in Customizer. See #42184.
        
$filesystem_method get_filesystem_method();
        
ob_start();
        
$filesystem_credentials_are_stored request_filesystem_credentialsself_admin_url() );
        
ob_end_clean();
        if ( 
'direct' !== $filesystem_method && ! $filesystem_credentials_are_stored ) {
            
$settings['theme']['_filesystemCredentialsNeeded'] = true;
        }

        
// Prepare Customize Section objects to pass to JavaScript.
        
foreach ( $this->sections() as $id => $section ) {
            if ( 
$section->check_capabilities() ) {
                
$settings['sections'][ $id ] = $section->json();
            }
        }

        
// Prepare Customize Panel objects to pass to JavaScript.
        
foreach ( $this->panels() as $panel_id => $panel ) {
            if ( 
$panel->check_capabilities() ) {
                
$settings['panels'][ $panel_id ] = $panel->json();
                foreach ( 
$panel->sections as $section_id => $section ) {
                    if ( 
$section->check_capabilities() ) {
                        
$settings['sections'][ $section_id ] = $section->json();
                    }
                }
            }
        }

        
?>
        <script type="text/javascript">
            var _wpCustomizeSettings = <?php echo wp_json_encode$settings ); ?>;
            _wpCustomizeSettings.initialClientTimestamp = _.now();
            _wpCustomizeSettings.controls = {};
            _wpCustomizeSettings.settings = {};
            <?php

            
// Serialize settings one by one to improve memory usage.
            
echo "(function ( s ){\n";
            foreach ( 
$this->settings() as $setting ) {
                if ( 
$setting->check_capabilities() ) {
                    
printf(
                        
"s[%s] = %s;\n",
                        
wp_json_encode$setting->id ),
                        
wp_json_encode$setting->json() )
                    );
                }
            }
            echo 
"})( _wpCustomizeSettings.settings );\n";

            
// Serialize controls one by one to improve memory usage.
            
echo "(function ( c ){\n";
            foreach ( 
$this->controls() as $control ) {
                if ( 
$control->check_capabilities() ) {
                    
printf(
                        
"c[%s] = %s;\n",
                        
wp_json_encode$control->id ),
                        
wp_json_encode$control->json() )
                    );
                }
            }
            echo 
"})( _wpCustomizeSettings.controls );\n";
            
?>
        </script>
        <?php
    
}

    
/**
     * Returns a list of devices to allow previewing.
     *
     * @since 4.5.0
     *
     * @return array List of devices with labels and default setting.
     */
    
public function get_previewable_devices() {
        
$devices = array(
            
'desktop' => array(
                
'label'   => __'Enter desktop preview mode' ),
                
'default' => true,
            ),
            
'tablet'  => array(
                
'label' => __'Enter tablet preview mode' ),
            ),
            
'mobile'  => array(
                
'label' => __'Enter mobile preview mode' ),
            ),
        );

        
/**
         * Filters the available devices to allow previewing in the Customizer.
         *
         * @since 4.5.0
         *
         * @see WP_Customize_Manager::get_previewable_devices()
         *
         * @param array $devices List of devices with labels and default setting.
         */
        
$devices apply_filters'customize_previewable_devices'$devices );

        return 
$devices;
    }

    
/**
     * Register some default controls.
     *
     * @since 3.4.0
     */
    
public function register_controls() {

        
/* Themes (controls are loaded via ajax) */

        
$this->add_panel(
            new 
WP_Customize_Themes_Panel(
                
$this,
                
'themes',
                array(
                    
'title'       => $this->theme()->display'Name' ),
                    
'description' => (
                    
'<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>' .
                    
'<p>' __'While previewing a new theme, you can continue to tailor things like widgets and menus, and explore theme-specific options.' ) . '</p>'
                    
),
                    
'capability'  => 'switch_themes',
                    
'priority'    => 0,
                )
            )
        );

        
$this->add_section(
            new 
WP_Customize_Themes_Section(
                
$this,
                
'installed_themes',
                array(
                    
'title'      => __'Installed themes' ),
                    
'action'     => 'installed',
                    
'capability' => 'switch_themes',
                    
'panel'      => 'themes',
                    
'priority'   => 0,
                )
            )
        );

        if ( ! 
is_multisite() ) {
            
$this->add_section(
                new 
WP_Customize_Themes_Section(
                    
$this,
                    
'wporg_themes',
                    array(
                        
'title'       => __'WordPress.org themes' ),
                        
'action'      => 'wporg',
                        
'filter_type' => 'remote',
                        
'capability'  => 'install_themes',
                        
'panel'       => 'themes',
                        
'priority'    => 5,
                    )
                )
            );
        }

        
// Themes Setting (unused - the theme is considerably more fundamental to the Customizer experience).
        
$this->add_setting(
            new 
WP_Customize_Filter_Setting(
                
$this,
                
'active_theme',
                array(
                    
'capability' => 'switch_themes',
                )
            )
        );

        
/* Site Identity */

        
$this->add_section(
            
'title_tagline',
            array(
                
'title'    => __'Site Identity' ),
                
'priority' => 20,
            )
        );

        
$this->add_setting(
            
'blogname',
            array(
                
'default'    => get_option'blogname' ),
                
'type'       => 'option',
                
'capability' => 'manage_options',
            )
        );

        
$this->add_control(
            
'blogname',
            array(
                
'label'   => __'Site Title' ),
                
'section' => 'title_tagline',
            )
        );

        
$this->add_setting(
            
'blogdescription',
            array(
                
'default'    => get_option'blogdescription' ),
                
'type'       => 'option',
                
'capability' => 'manage_options',
            )
        );

        
$this->add_control(
            
'blogdescription',
            array(
                
'label'   => __'Tagline' ),
                
'section' => 'title_tagline',
            )
        );

        
// Add a setting to hide header text if the theme doesn't support custom headers.
        
if ( ! current_theme_supports'custom-header''header-text' ) ) {
            
$this->add_setting(
                
'header_text',
                array(
                    
'theme_supports'    => array( 'custom-logo''header-text' ),
                    
'default'           => 1,
                    
'sanitize_callback' => 'absint',
                )
            );

            
$this->add_control(
                
'header_text',
                array(
                    
'label'    => __'Display Site Title and Tagline' ),
                    
'section'  => 'title_tagline',
                    
'settings' => 'header_text',
                    
'type'     => 'checkbox',
                )
            );
        }

        
$this->add_setting(
            
'site_icon',
            array(
                
'type'       => 'option',
                
'capability' => 'manage_options',
                
'transport'  => 'postMessage'// Previewed with JS in the Customizer controls window.
            
)
        );

        
$this->add_control(
            new 
WP_Customize_Site_Icon_Control(
                
$this,
                
'site_icon',
                array(
                    
'label'       => __'Site Icon' ),
                    
'description' => sprintf(
                        
'<p>' __'Site Icons are what you see in browser tabs, bookmark bars, and within the WordPress mobile apps. Upload one here!' ) . '</p>' .
                        
/* translators: %s: site icon size in pixels */
                        
'<p>' __'Site Icons should be square and at least %s pixels.' ) . '</p>',
                        
'<strong>512 &times; 512</strong>'
                    
),
                    
'section'     => 'title_tagline',
                    
'priority'    => 60,
                    
'height'      => 512,
                    
'width'       => 512,
                )
            )
        );

        
$this->add_setting(
            
'custom_logo',
            array(
                
'theme_supports' => array( 'custom-logo' ),
                
'transport'      => 'postMessage',
            )
        );

        
$custom_logo_args get_theme_support'custom-logo' );
        
$this->add_control(
            new 
WP_Customize_Cropped_Image_Control(
                
$this,
                
'custom_logo',
                array(
                    
'label'         => __'Logo' ),
                    
'section'       => 'title_tagline',
                    
'priority'      => 8,
                    
'height'        => $custom_logo_args[0]['height'],
                    
'width'         => $custom_logo_args[0]['width'],
                    
'flex_height'   => $custom_logo_args[0]['flex-height'],
                    
'flex_width'    => $custom_logo_args[0]['flex-width'],
                    
'button_labels' => array(
                        
'select'       => __'Select logo' ),
                        
'change'       => __'Change logo' ),
                        
'remove'       => __'Remove' ),
                        
'default'      => __'Default' ),
                        
'placeholder'  => __'No logo selected' ),
                        
'frame_title'  => __'Select logo' ),
                        
'frame_button' => __'Choose logo' ),
                    ),
                )
            )
        );

        
$this->selective_refresh->add_partial(
            
'custom_logo',
            array(
                
'settings'            => array( 'custom_logo' ),
                
'selector'            => '.custom-logo-link',
                
'render_callback'     => array( $this'_render_custom_logo_partial' ),
                
'container_inclusive' => true,
            )
        );

        
/* Colors */

        
$this->add_section(
            
'colors',
            array(
                
'title'    => __'Colors' ),
                
'priority' => 40,
            )
        );

        
$this->add_setting(
            
'header_textcolor',
            array(
                
'theme_supports'       => array( 'custom-header''header-text' ),
                
'default'              => get_theme_support'custom-header''default-text-color' ),

                
'sanitize_callback'    => array( $this'_sanitize_header_textcolor' ),
                
'sanitize_js_callback' => 'maybe_hash_hex_color',
            )
        );

        
// Input type: checkbox
        // With custom value
        
$this->add_control(
            
'display_header_text',
            array(
                
'settings' => 'header_textcolor',
                
'label'    => __'Display Site Title and Tagline' ),
                
'section'  => 'title_tagline',
                
'type'     => 'checkbox',
                
'priority' => 40,
            )
        );

        
$this->add_control(
            new 
WP_Customize_Color_Control(
                
$this,
                
'header_textcolor',
                array(
                    
'label'   => __'Header Text Color' ),
                    
'section' => 'colors',
                )
            )
        );

        
// Input type: Color
        // With sanitize_callback
        
$this->add_setting(
            
'background_color',
            array(
                
'default'              => get_theme_support'custom-background''default-color' ),
                
'theme_supports'       => 'custom-background',

                
'sanitize_callback'    => 'sanitize_hex_color_no_hash',
                
'sanitize_js_callback' => 'maybe_hash_hex_color',
            )
        );

        
$this->add_control(
            new 
WP_Customize_Color_Control(
                
$this,
                
'background_color',
                array(
                    
'label'   => __'Background Color' ),
                    
'section' => 'colors',
                )
            )
        );

        
/* Custom Header */

        
if ( current_theme_supports'custom-header''video' ) ) {
            
$title       __'Header Media' );
            
$description '<p>' __'If you add a video, the image will be used as a fallback while the video loads.' ) . '</p>';

            
$width  absintget_theme_support'custom-header''width' ) );
            
$height absintget_theme_support'custom-header''height' ) );
            if ( 
$width && $height ) {
                
$control_description sprintf(
                    
/* translators: 1: .mp4, 2: header size in pixels */
                    
__'Upload your video in %1$s format and minimize its file size for best results. Your theme recommends dimensions of %2$s pixels.' ),
                    
'<code>.mp4</code>',
                    
sprintf'<strong>%s &times; %s</strong>'$width$height )
                );
            } elseif ( 
$width ) {
                
$control_description sprintf(
                    
/* translators: 1: .mp4, 2: header width in pixels */
                    
__'Upload your video in %1$s format and minimize its file size for best results. Your theme recommends a width of %2$s pixels.' ),
                    
'<code>.mp4</code>',
                    
sprintf'<strong>%s</strong>'$width )
                );
            } else {
                
$control_description sprintf(
                    
/* translators: 1: .mp4, 2: header height in pixels */
                    
__'Upload your video in %1$s format and minimize its file size for best results. Your theme recommends a height of %2$s pixels.' ),
                    
'<code>.mp4</code>',
                    
sprintf'<strong>%s</strong>'$height )
                );
            }
        } else {
            
$title               __'Header Image' );
            
$description         '';
            
$control_description '';
        }

        
$this->add_section(
            
'header_image',
            array(
                
'title'          => $title,
                
'description'    => $description,
                
'theme_supports' => 'custom-header',
                
'priority'       => 60,
            )
        );

        
$this->add_setting(
            
'header_video',
            array(
                
'theme_supports'    => array( 'custom-header''video' ),
                
'transport'         => 'postMessage',
                
'sanitize_callback' => 'absint',
                
'validate_callback' => array( $this'_validate_header_video' ),
            )
        );

        
$this->add_setting(
            
'external_header_video',
            array(
                
'theme_supports'    => array( 'custom-header''video' ),
                
'transport'         => 'postMessage',
                
'sanitize_callback' => array( $this'_sanitize_external_header_video' ),
                
'validate_callback' => array( $this'_validate_external_header_video' ),
            )
        );

        
$this->add_setting(
            new 
WP_Customize_Filter_Setting(
                
$this,
                
'header_image',
                array(
                    
'default'        => sprintfget_theme_support'custom-header''default-image' ), get_template_directory_uri(), get_stylesheet_directory_uri() ),
                    
'theme_supports' => 'custom-header',
                )
            )
        );

        
$this->add_setting(
            new 
WP_Customize_Header_Image_Setting(
                
$this,
                
'header_image_data',
                array(
                    
'theme_supports' => 'custom-header',
                )
            )
        );

        
/*
         * Switch image settings to postMessage when video support is enabled since
         * it entails that the_custom_header_markup() will be used, and thus selective
         * refresh can be utilized.
         */
        
if ( current_theme_supports'custom-header''video' ) ) {
            
$this->get_setting'header_image' )->transport      'postMessage';
            
$this->get_setting'header_image_data' )->transport 'postMessage';
        }

        
$this->add_control(
            new 
WP_Customize_Media_Control(
                
$this,
                
'header_video',
                array(
                    
'theme_supports'  => array( 'custom-header''video' ),
                    
'label'           => __'Header Video' ),
                    
'description'     => $control_description,
                    
'section'         => 'header_image',
                    
'mime_type'       => 'video',
                    
'active_callback' => 'is_header_video_active',
                )
            )
        );

        
$this->add_control(
            
'external_header_video',
            array(
                
'theme_supports'  => array( 'custom-header''video' ),
                
'type'            => 'url',
                
'description'     => __'Or, enter a YouTube URL:' ),
                
'section'         => 'header_image',
                
'active_callback' => 'is_header_video_active',
            )
        );

        
$this->add_control( new WP_Customize_Header_Image_Control$this ) );

        
$this->selective_refresh->add_partial(
            
'custom_header',
            array(
                
'selector'            => '#wp-custom-header',
                
'render_callback'     => 'the_custom_header_markup',
                
'settings'            => array( 'header_video''external_header_video''header_image' ), // The image is used as a video fallback here.
                
'container_inclusive' => true,
            )
        );

        
/* Custom Background */

        
$this->add_section(
            
'background_image',
            array(
                
'title'          => __'Background Image' ),
                
'theme_supports' => 'custom-background',
                
'priority'       => 80,
            )
        );

        
$this->add_setting(
            
'background_image',
            array(
                
'default'           => get_theme_support'custom-background''default-image' ),
                
'theme_supports'    => 'custom-background',
                
'sanitize_callback' => array( $this'_sanitize_background_setting' ),
            )
        );

        
$this->add_setting(
            new 
WP_Customize_Background_Image_Setting(
                
$this,
                
'background_image_thumb',
                array(
                    
'theme_supports'    => 'custom-background',
                    
'sanitize_callback' => array( $this'_sanitize_background_setting' ),
                )
            )
        );

        
$this->add_control( new WP_Customize_Background_Image_Control$this ) );

        
$this->add_setting(
            
'background_preset',
            array(
                
'default'           => get_theme_support'custom-background''default-preset' ),
                
'theme_supports'    => 'custom-background',
                
'sanitize_callback' => array( $this'_sanitize_background_setting' ),
            )
        );

        
$this->add_control(
            
'background_preset',
            array(
                
'label'   => _x'Preset''Background Preset' ),
                
'section' => 'background_image',
                
'type'    => 'select',
                
'choices' => array(
                    
'default' => _x'Default''Default Preset' ),
                    
'fill'    => __'Fill Screen' ),
                    
'fit'     => __'Fit to Screen' ),
                    
'repeat'  => _x'Repeat''Repeat Image' ),
                    
'custom'  => _x'Custom''Custom Preset' ),
                ),
            )
        );

        
$this->add_setting(
            
'background_position_x',
            array(
                
'default'           => get_theme_support'custom-background''default-position-x' ),
                
'theme_supports'    => 'custom-background',
                
'sanitize_callback' => array( $this'_sanitize_background_setting' ),
            )
        );

        
$this->add_setting(
            
'background_position_y',
            array(
                
'default'           => get_theme_support'custom-background''default-position-y' ),
                
'theme_supports'    => 'custom-background',
                
'sanitize_callback' => array( $this'_sanitize_background_setting' ),
            )
        );

        
$this->add_control(
            new 
WP_Customize_Background_Position_Control(
                
$this,
                
'background_position',
                array(
                    
'label'    => __'Image Position' ),
                    
'section'  => 'background_image',
                    
'settings' => array(
                        
'x' => 'background_position_x',
                        
'y' => 'background_position_y',
                    ),
                )
            )
        );

        
$this->add_setting(
            
'background_size',
            array(
                
'default'           => get_theme_support'custom-background''default-size' ),
                
'theme_supports'    => 'custom-background',
                
'sanitize_callback' => array( $this'_sanitize_background_setting' ),
            )
        );

        
$this->add_control(
            
'background_size',
            array(
                
'label'   => __'Image Size' ),
                
'section' => 'background_image',
                
'type'    => 'select',
                
'choices' => array(
                    
'auto'    => __'Original' ),
                    
'contain' => __'Fit to Screen' ),
                    
'cover'   => __'Fill Screen' ),
                ),
            )
        );

        
$this->add_setting(
            
'background_repeat',
            array(
                
'default'           => get_theme_support'custom-background''default-repeat' ),
                
'sanitize_callback' => array( $this'_sanitize_background_setting' ),
                
'theme_supports'    => 'custom-background',
            )
        );

        
$this->add_control(
            
'background_repeat',
            array(
                
'label'   => __'Repeat Background Image' ),
                
'section' => 'background_image',
                
'type'    => 'checkbox',
            )
        );

        
$this->add_setting(
            
'background_attachment',
            array(
                
'default'           => get_theme_support'custom-background''default-attachment' ),
                
'sanitize_callback' => array( $this'_sanitize_background_setting' ),
                
'theme_supports'    => 'custom-background',
            )
        );

        
$this->add_control(
            
'background_attachment',
            array(
                
'label'   => __'Scroll with Page' ),
                
'section' => 'background_image',
                
'type'    => 'checkbox',
            )
        );

        
// If the theme is using the default background callback, we can update
        // the background CSS using postMessage.
        
if ( get_theme_support'custom-background''wp-head-callback' ) === '_custom_background_cb' ) {
            foreach ( array( 
'color''image''preset''position_x''position_y''size''repeat''attachment' ) as $prop ) {
                
$this->get_setting'background_' $prop )->transport 'postMessage';
            }
        }

        
/*
         * Static Front Page
         * See also https://core.trac.wordpress.org/ticket/19627 which introduces the static-front-page theme_support.
         * The following replicates behavior from options-reading.php.
         */

        
$this->add_section(
            
'static_front_page',
            array(
                
'title'           => __'Homepage Settings' ),
                
'priority'        => 120,
                
'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.' ),
                
'active_callback' => array( $this'has_published_pages' ),
            )
        );

        
$this->add_setting(
            
'show_on_front',
            array(
                
'default'    => get_option'show_on_front' ),
                
'capability' => 'manage_options',
                
'type'       => 'option',
            )
        );

        
$this->add_control(
            
'show_on_front',
            array(
                
'label'   => __'Your homepage displays' ),
                
'section' => 'static_front_page',
                
'type'    => 'radio',
                
'choices' => array(
                    
'posts' => __'Your latest posts' ),
                    
'page'  => __'A static page' ),
                ),
            )
        );

        
$this->add_setting(
            
'page_on_front',
            array(
                
'type'       => 'option',
                
'capability' => 'manage_options',
            )
        );

        
$this->add_control(
            
'page_on_front',
            array(
                
'label'          => __'Homepage' ),
                
'section'        => 'static_front_page',
                
'type'           => 'dropdown-pages',
                
'allow_addition' => true,
            )
        );

        
$this->add_setting(
            
'page_for_posts',
            array(
                
'type'       => 'option',
                
'capability' => 'manage_options',
            )
        );

        
$this->add_control(
            
'page_for_posts',
            array(
                
'label'          => __'Posts page' ),
                
'section'        => 'static_front_page',
                
'type'           => 'dropdown-pages',
                
'allow_addition' => true,
            )
        );

        
/* Custom CSS */
        
$section_description  '<p>';
        
$section_description .= __'Add your own CSS code here to customize the appearance and layout of your site.' );
        
$section_description .= sprintf(
            
' <a href="%1$s" class="external-link" target="_blank">%2$s<span class="screen-reader-text"> %3$s</span></a>',
            
esc_url__'https://codex.wordpress.org/CSS' ) ),
            
__'Learn more about CSS' ),
            
/* translators: accessibility text */
            
__'(opens in a new tab)' )
        );
        
$section_description .= '</p>';

        
$section_description .= '<p id="editor-keyboard-trap-help-1">' __'When using a keyboard to navigate:' ) . '</p>';
        
$section_description .= '<ul>';
        
$section_description .= '<li id="editor-keyboard-trap-help-2">' __'In the editing area, the Tab key enters a tab character.' ) . '</li>';
        
$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>';
        
$section_description .= '<li id="editor-keyboard-trap-help-4">' __'Screen reader users: when in forms mode, you may need to press the escape key twice.' ) . '</li>';
        
$section_description .= '</ul>';

        if ( 
'false' !== wp_get_current_user()->syntax_highlighting ) {
            
$section_description .= '<p>';
            
$section_description .= sprintf(
                
/* translators: 1: link to user profile, 2: additional link attributes, 3: accessibility text */
                
__'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.' ),
                
esc_urlget_edit_profile_url() ),
                
'class="external-link" target="_blank"',
                
sprintf(
                    
'<span class="screen-reader-text"> %s</span>',
                    
/* translators: accessibility text */
                    
__'(opens in a new tab)' )
                )
            );
            
$section_description .= '</p>';
        }

        
$section_description .= '<p class="section-description-buttons">';
        
$section_description .= '<button type="button" class="button-link section-description-close">' __'Close' ) . '</button>';
        
$section_description .= '</p>';

        
$this->add_section(
            
'custom_css',
            array(
                
'title'              => __'Additional CSS' ),
                
'priority'           => 200,
                
'description_hidden' => true,
                
'description'        => $section_description,
            )
        );

        
$custom_css_setting = new WP_Customize_Custom_CSS_Setting(
            
$this,
            
sprintf'custom_css[%s]'get_stylesheet() ),
            array(
                
'capability' => 'edit_css',
                
'default'    => '',
            )
        );
        
$this->add_setting$custom_css_setting );

        
$this->add_control(
            new 
WP_Customize_Code_Editor_Control(
                
$this,
                
'custom_css',
                array(
                    
'label'       => __'CSS code' ),
                    
'section'     => 'custom_css',
                    
'settings'    => array( 'default' => $custom_css_setting->id ),
                    
'code_type'   => 'text/css',
                    
'input_attrs' => array(
                        
'aria-describedby' => 'editor-keyboard-trap-help-1 editor-keyboard-trap-help-2 editor-keyboard-trap-help-3 editor-keyboard-trap-help-4',
                    ),
                )
            )
        );
    }

    
/**
     * Return whether there are published pages.
     *
     * Used as active callback for static front page section and controls.
     *
     * @since 4.7.0
     *
     * @returns bool Whether there are published (or to be published) pages.
     */
    
public function has_published_pages() {

        
$setting $this->get_setting'nav_menus_created_posts' );
        if ( 
$setting ) {
            foreach ( 
$setting->value() as $post_id ) {
                if ( 
'page' === get_post_type$post_id ) ) {
                    return 
true;
                }
            }
        }
        return 
!== countget_pages() );
    }

    
/**
     * Add settings from the POST data that were not added with code, e.g. dynamically-created settings for Widgets
     *
     * @since 4.2.0
     *
     * @see add_dynamic_settings()
     */
    
public function register_dynamic_settings() {
        
$setting_ids array_keys$this->unsanitized_post_values() );
        
$this->add_dynamic_settings$setting_ids );
    }

    
/**
     * Load themes into the theme browsing/installation UI.
     *
     * @since 4.9.0
     */
    
public function handle_load_themes_request() {
        
check_ajax_referer'switch_themes''nonce' );

        if ( ! 
current_user_can'switch_themes' ) ) {
            
wp_die( -);
        }

        if ( empty( 
$_POST['theme_action'] ) ) {
            
wp_send_json_error'missing_theme_action' );
        }
        
$theme_action sanitize_key$_POST['theme_action'] );
        
$themes       = array();
        
$args         = array();

        
// Define query filters based on user input.
        
if ( ! array_key_exists'search'$_POST ) ) {
            
$args['search'] = '';
        } else {
            
$args['search'] = sanitize_text_fieldwp_unslash$_POST['search'] ) );
        }

        if ( ! 
array_key_exists'tags'$_POST ) ) {
            
$args['tag'] = '';
        } else {
            
$args['tag'] = array_map'sanitize_text_field'wp_unslash( (array) $_POST['tags'] ) );
        }

        if ( ! 
array_key_exists'page'$_POST ) ) {
            
$args['page'] = 1;
        } else {
            
$args['page'] = absint$_POST['page'] );
        }

        require_once 
ABSPATH 'site-admin/includes/theme.php';

        if ( 
'installed' === $theme_action ) {

            
// Load all installed themes from wp_prepare_themes_for_js().
            
$themes = array( 'themes' => wp_prepare_themes_for_js() );
            foreach ( 
$themes['themes'] as &$theme ) {
                
$theme['type']   = 'installed';
                
$theme['active'] = ( isset( $_POST['customized_theme'] ) && $_POST['customized_theme'] === $theme['id'] );
            }
        } elseif ( 
'wporg' === $theme_action ) {

            
// Load WordPress.org themes from the .org API and normalize data to match installed theme objects.
            
if ( ! current_user_can'install_themes' ) ) {
                
wp_die( -);
            }

            
// Arguments for all queries.
            
$wporg_args = array(
                
'per_page' => 100,
            );

            
$args array_merge$wporg_args$args );

            if ( 
'' === $args['search'] && '' === $args['tag'] ) {
                
$args['browse'] = 'new'// Sort by latest themes by default.
            
}

            
// Load themes from the .org API.
            
$themes themes_api'query_themes'$args );
            if ( 
is_wp_error$themes ) ) {
                
wp_send_json_error();
            }

            
// This list matches the allowed tags in site-admin/includes/theme-install.php.
            
$themes_allowedtags                     array_fill_keys(
                array( 
'a''abbr''acronym''code''pre''em''strong''div''p''ul''ol''li''h1''h2''h3''h4''h5''h6''img' ),
                array()
            );
            
$themes_allowedtags['a']                = array_fill_keys( array( 'href''title''target' ), true );
            
$themes_allowedtags['acronym']['title'] = true;
            
$themes_allowedtags['abbr']['title']    = true;
            
$themes_allowedtags['img']              = array_fill_keys( array( 'src''class''alt' ), true );

            
// Prepare a list of installed themes to check against before the loop.
            
$installed_themes = array();
            
$wp_themes        wp_get_themes();
            foreach ( 
$wp_themes as $theme ) {
                
$installed_themes[] = $theme->get_stylesheet();
            }
            
$update_php network_admin_url'update.php?action=install-theme' );

            
// Set up properties for themes available on WordPress.org.
            
foreach ( $themes->themes as &$theme ) {
                
$theme->install_url add_query_arg(
                    array(
                        
'theme'    => $theme->slug,
                        
'_wpnonce' => wp_create_nonce'install-theme_' $theme->slug ),
                    ),
                    
$update_php
                
);

                
$theme->name        wp_kses$theme->name$themes_allowedtags );
                
$theme->version     wp_kses$theme->version$themes_allowedtags );
                
$theme->description wp_kses$theme->description$themes_allowedtags );
                
$theme->stars       wp_star_rating(
                    array(
                        
'rating' => $theme->rating,
                        
'type'   => 'percent',
                        
'number' => $theme->num_ratings,
                        
'echo'   => false,
                    )
                );
                
$theme->num_ratings number_format_i18n$theme->num_ratings );
                
$theme->preview_url set_url_scheme$theme->preview_url );

                
// Handle themes that are already installed as installed themes.
                
if ( in_array$theme->slug$installed_themestrue ) ) {
                    
$theme->type 'installed';
                } else {
                    
$theme->type $theme_action;
                }

                
// Set active based on customized theme.
                
$theme->active = ( isset( $_POST['customized_theme'] ) && $_POST['customized_theme'] === $theme->slug );

                
// Map available theme properties to installed theme properties.
                
$theme->id           $theme->slug;
                
$theme->screenshot   = array( $theme->screenshot_url );
                
$theme->authorAndUri wp_kses$theme->author['display_name'], $themes_allowedtags );

                if ( isset( 
$theme->parent ) ) {
                    
$theme->parent $theme->parent['slug'];
                } else {
                    
$theme->parent false;
                }
                unset( 
$theme->slug );
                unset( 
$theme->screenshot_url );
                unset( 
$theme->author );
            } 
// End foreach().
        
// End if().

        /**
         * Filters the theme data loaded in the customizer.
         *
         * This allows theme data to be loading from an external source,
         * or modification of data loaded from `wp_prepare_themes_for_js()`
         * or WordPress.org via `themes_api()`.
         *
         * @since 4.9.0
         *
         * @see wp_prepare_themes_for_js()
         * @see themes_api()
         * @see WP_Customize_Manager::__construct()
         *
         * @param array                $themes  Nested array of theme data.
         * @param array                $args    List of arguments, such as page, search term, and tags to query for.
         * @param WP_Customize_Manager $manager Instance of Customize manager.
         */
        
$themes apply_filters'customize_load_themes'$themes$args$this );

        
wp_send_json_success$themes );
    }


    
/**
     * Callback for validating the header_textcolor value.
     *
     * Accepts 'blank', and otherwise uses sanitize_hex_color_no_hash().
     * Returns default text color if hex color is empty.
     *
     * @since 3.4.0
     *
     * @param string $color
     * @return mixed
     */
    
public function _sanitize_header_textcolor$color ) {
        if ( 
'blank' === $color ) {
            return 
'blank';
        }

        
$color sanitize_hex_color_no_hash$color );
        if ( empty( 
$color ) ) {
            
$color get_theme_support'custom-header''default-text-color' );
        }

        return 
$color;
    }

    
/**
     * Callback for validating a background setting value.
     *
     * @since 4.7.0
     *
     * @param string $value Repeat value.
     * @param WP_Customize_Setting $setting Setting.
     * @return string|WP_Error Background value or validation error.
     */
    
public function _sanitize_background_setting$value$setting ) {
        if ( 
'background_repeat' === $setting->id ) {
            if ( ! 
in_array$value, array( 'repeat-x''repeat-y''repeat''no-repeat' ) ) ) {
                return new 
WP_Error'invalid_value'__'Invalid value for background repeat.' ) );
            }
        } elseif ( 
'background_attachment' === $setting->id ) {
            if ( ! 
in_array$value, array( 'fixed''scroll' ) ) ) {
                return new 
WP_Error'invalid_value'__'Invalid value for background attachment.' ) );
            }
        } elseif ( 
'background_position_x' === $setting->id ) {
            if ( ! 
in_array$value, array( 'left''center''right' ), true ) ) {
                return new 
WP_Error'invalid_value'__'Invalid value for background position X.' ) );
            }
        } elseif ( 
'background_position_y' === $setting->id ) {
            if ( ! 
in_array$value, array( 'top''center''bottom' ), true ) ) {
                return new 
WP_Error'invalid_value'__'Invalid value for background position Y.' ) );
            }
        } elseif ( 
'background_size' === $setting->id ) {
            if ( ! 
in_array$value, array( 'auto''contain''cover' ), true ) ) {
                return new 
WP_Error'invalid_value'__'Invalid value for background size.' ) );
            }
        } elseif ( 
'background_preset' === $setting->id ) {
            if ( ! 
in_array$value, array( 'default''fill''fit''repeat''custom' ), true ) ) {
                return new 
WP_Error'invalid_value'__'Invalid value for background size.' ) );
            }
        } elseif ( 
'background_image' === $setting->id || 'background_image_thumb' === $setting->id ) {
            
$value = empty( $value ) ? '' esc_url_raw$value );
        } else {
            return new 
WP_Error'unrecognized_setting'__'Unrecognized background setting.' ) );
        }
        return 
$value;
    }

    
/**
     * Export header video settings to facilitate selective refresh.
     *
     * @since 4.7.0
     *
     * @param array $response Response.
     * @param WP_Customize_Selective_Refresh $selective_refresh Selective refresh component.
     * @param array $partials Array of partials.
     * @return array
     */
    
public function export_header_video_settings$response$selective_refresh$partials ) {
        if ( isset( 
$partials['custom_header'] ) ) {
            
$response['custom_header_settings'] = get_header_video_settings();
        }

        return 
$response;
    }

    
/**
     * Callback for validating the header_video value.
     *
     * Ensures that the selected video is less than 8MB and provides an error message.
     *
     * @since 4.7.0
     *
     * @param WP_Error $validity
     * @param mixed $value
     * @return mixed
     */
    
public function _validate_header_video$validity$value ) {
        
$video get_attached_fileabsint$value ) );
        if ( 
$video ) {
            
$size filesize$video );
            if ( 
$size pow1024) ) { // Check whether the size is larger than 8MB.
                
$validity->add(
                    
'size_too_large',
                    
__'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.' )
                );
            }
            if ( 
'.mp4' !== substr$video, -) && '.mov' !== substr$video, -) ) { // Check for .mp4 or .mov format, which (assuming h.264 encoding) are the only cross-browser-supported formats.
                
$validity->add(
                    
'invalid_file_type',
                    
sprintf(
                        
/* translators: 1: .mp4, 2: .mov */
                        
__'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.' ),
                        
'<code>.mp4</code>',
                        
'<code>.mov</code>'
                    
)
                );
            }
        }
        return 
$validity;
    }

    
/**
     * Callback for validating the external_header_video value.
     *
     * Ensures that the provided URL is supported.
     *
     * @since 4.7.0
     *
     * @param WP_Error $validity
     * @param mixed $value
     * @return mixed
     */
    
public function _validate_external_header_video$validity$value ) {
        
$video esc_url_raw$value );
        if ( 
$video ) {
            if ( ! 
preg_match'#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#'$video ) ) {
                
$validity->add'invalid_url'__'Please enter a valid YouTube URL.' ) );
            }
        }
        return 
$validity;
    }

    
/**
     * Callback for sanitizing the external_header_video value.
     *
     * @since 4.7.1
     *
     * @param string $value URL.
     * @return string Sanitized URL.
     */
    
public function _sanitize_external_header_video$value ) {
        return 
esc_url_rawtrim$value ) );
    }

    
/**
     * Callback for rendering the custom logo, used in the custom_logo partial.
     *
     * This method exists because the partial object and context data are passed
     * into a partial's render_callback so we cannot use get_custom_logo() as
     * the render_callback directly since it expects a blog ID as the first
     * argument. When WP no longer supports PHP 5.3, this method can be removed
     * in favor of an anonymous function.
     *
     * @see WP_Customize_Manager::register_controls()
     *
     * @since 4.5.0
     *
     * @return string Custom logo.
     */
    
public function _render_custom_logo_partial() {
        return 
get_custom_logo();
    }
}

:: Command execute ::

Enter:
 
Select:
 

:: Search ::
  - regexp 

:: Upload ::
 
[ Read-Only ]

:: Make Dir ::
 
[ Read-Only ]
:: Make File ::
 
[ Read-Only ]

:: Go Dir ::
 
:: Go File ::
 

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