GC_Customize_Manager::__construct()

	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'] = gc_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'] = gc_unslash( $_REQUEST['customize_theme'] );
			} elseif ( isset( $_REQUEST['theme'] ) ) { // Deprecated.
				$args['theme'] = gc_unslash( $_REQUEST['theme'] );
			}
		}
		if ( ! isset( $args['messenger_channel'] ) && isset( $_REQUEST['customize_messenger_channel'] ) ) {
			$args['messenger_channel'] = sanitize_key( gc_unslash( $_REQUEST['customize_messenger_channel'] ) );
		}

		$this->original_stylesheet = get_stylesheet();
		$this->theme               = gc_get_theme( 0 === 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 . GCINC . '/class-gc-customize-setting.php';
		require_once ABSPATH . GCINC . '/class-gc-customize-panel.php';
		require_once ABSPATH . GCINC . '/class-gc-customize-section.php';
		require_once ABSPATH . GCINC . '/class-gc-customize-control.php';

		require_once ABSPATH . GCINC . '/customize/class-gc-customize-color-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-media-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-upload-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-image-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-background-image-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-background-position-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-cropped-image-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-site-icon-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-header-image-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-theme-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-code-editor-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-widget-area-customize-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-widget-form-customize-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-nav-menu-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-nav-menu-item-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-nav-menu-location-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-nav-menu-name-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-nav-menu-locations-control.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-nav-menu-auto-add-control.php';

		require_once ABSPATH . GCINC . '/customize/class-gc-customize-nav-menus-panel.php';

		require_once ABSPATH . GCINC . '/customize/class-gc-customize-themes-panel.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-themes-section.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-sidebar-section.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-nav-menu-section.php';

		require_once ABSPATH . GCINC . '/customize/class-gc-customize-custom-css-setting.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-filter-setting.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-header-image-setting.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-background-image-setting.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-customize-nav-menu-item-setting.php';
		require_once ABSPATH . GCINC . '/customize/class-gc-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 GC_Customize_Manager::__construct()
		 *
		 * @param string[]             $components Array of core components to load.
		 * @param GC_Customize_Manager $this       GC_Customize_Manager instance.
		 */
		$components = apply_filters( 'customize_loaded_components', $this->components, $this );

		require_once ABSPATH . GCINC . '/customize/class-gc-customize-selective-refresh.php';
		$this->selective_refresh = new GC_Customize_Selective_Refresh( $this );

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

		if ( in_array( 'nav_menus', $components, true ) ) {
			require_once ABSPATH . GCINC . '/class-gc-customize-nav-menus.php';
			$this->nav_menus = new GC_Customize_Nav_Menus( $this );
		}

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

		// Do not spawn cron (especially the alternate cron) while running the Customizer.
		remove_action( 'init', 'gc_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( 'gc_ajax_customize_save', array( $this, 'save' ) );
		add_action( 'gc_ajax_customize_trash', array( $this, 'handle_changeset_trash_request' ) );
		add_action( 'gc_ajax_customize_refresh_nonces', array( $this, 'refresh_nonces' ) );
		add_action( 'gc_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, 3 );
		add_action( 'gc_ajax_customize_override_changeset_lock', array( $this, 'handle_override_changeset_lock_request' ) );
		add_action( 'gc_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' ), 1 );
		add_action( 'customize_controls_print_footer_scripts', array( $this, 'render_section_templates' ), 1 );
		add_action( 'customize_controls_print_footer_scripts', array( $this, 'render_control_templates' ), 1 );

		// Export header video settings with the partial response.
		add_filter( 'customize_render_partials_response', array( $this, 'export_header_video_settings' ), 10, 3 );

		// Export the settings to JS via the _gcCustomizeSettings 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 . 'gc-admin/includes/update.php';
			add_action( 'customize_controls_print_footer_scripts', 'gc_print_admin_notice_templates' );
		}
	}