CaffGeek/MBACNationals

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Web.Admin/2014/wordpress/wp-includes/class-wp-customize-manager.php

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<?php
/**
 * Customize Manager.
 *
 * 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.
 *
 * @package WordPress
 * @subpackage Customize
 * @since 3.4.0
 */
final class WP_Customize_Manager {
    /**
     * An instance of the theme that is being customized.
     *
     * @var WP_Theme
     */
    protected $theme;

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

    /**
     * Whether filters have been set to change the active theme to the theme being
     * customized.
     *
     * @var boolean
     */
    protected $previewing = false;

    /**
     * Methods and properties deailing with managing widgets in the customizer.
     *
     * @var WP_Customize_Widgets
     */
    public $widgets;

    protected $settings = array();
    protected $sections = array();
    protected $controls = array();

    protected $nonce_tick;

    protected $customized;

    /**
     * $_POST values for Customize Settings.
     *
     * @var array
     */
    private $_post_values;

    /**
     * Constructor.
     *
     * @since 3.4.0
     */
    public function __construct() {
        require( ABSPATH . WPINC . '/class-wp-customize-setting.php' );
        require( ABSPATH . WPINC . '/class-wp-customize-section.php' );
        require( ABSPATH . WPINC . '/class-wp-customize-control.php' );
        require( ABSPATH . WPINC . '/class-wp-customize-widgets.php' );

        $this->widgets = new WP_Customize_Widgets( $this );

        add_filter( 'wp_die_handler', array( $this, 'wp_die_handler' ) );

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

        // Run wp_redirect_status late to make sure we override the status last.
        add_action( 'wp_redirect_status', array( $this, 'wp_redirect_status' ), 1000 );

        // 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( 'customize_register',                 array( $this, 'register_controls' ) );
        add_action( 'customize_controls_init',            array( $this, 'prepare_controls' ) );
        add_action( 'customize_controls_enqueue_scripts', array( $this, 'enqueue_control_scripts' ) );
    }

    /**
     * Return true if it's an AJAX request.
     *
     * @since 3.4.0
     *
     * @return bool
     */
    public function doing_ajax() {
        return isset( $_POST['customized'] ) || ( defined( 'DOING_AJAX' ) && DOING_AJAX );
    }

    /**
     * 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 = __( 'Cheatin&#8217; uh?' );

        wp_die( $message );
    }

    /**
     * Return the AJAX wp_die() handler if it's a customized request.
     *
     * @since 3.4.0
     *
     * @return string
     */
    public function wp_die_handler() {
        if ( $this->doing_ajax() )
            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
     */
    public function setup_theme() {
        send_origin_headers();

        if ( is_admin() && ! $this->doing_ajax() )
            auth_redirect();
        elseif ( $this->doing_ajax() && ! is_user_logged_in() )
            $this->wp_die( 0 );

        show_admin_bar( false );

        if ( ! current_user_can( 'edit_theme_options' ) )
            $this->wp_die( -1 );

        $this->original_stylesheet = get_stylesheet();

        $this->theme = wp_get_theme( isset( $_REQUEST['theme'] ) ? $_REQUEST['theme'] : null );

        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 );

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

            // If the theme isn't allowed per multisite settings, bail.
            if ( ! $this->theme()->is_allowed() )
                $this->wp_die( -1 );
        }

        // All good, let's do some internal business to preview the theme.
        $this->start_previewing_theme();
    }

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

    /**
     * Start previewing the selected theme by adding filters to change the current theme.
     *
     * @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: http://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: http://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 );
    }

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

    /**
     * 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() {

        /**
         * 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->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
     *
     * @param $status
     * @return int
     */
    public function wp_redirect_status( $status ) {
        if ( $this->is_preview() && ! is_admin() )
            return 200;

        return $status;
    }

    /**
     * Decode the $_POST['customized'] values for a specific Customize Setting.
     *
     * @since 3.4.0
     *
     * @param mixed $setting A WP_Customize_Setting derived object
     * @return string $post_value Sanitized value
     */
    public function post_value( $setting ) {
        if ( ! isset( $this->_post_values ) ) {
            if ( isset( $_POST['customized'] ) )
                $this->_post_values = json_decode( wp_unslash( $_POST['customized'] ), true );
            else
                $this->_post_values = false;
        }

        if ( isset( $this->_post_values[ $setting->id ] ) )
            return $setting->sanitize( $this->_post_values[ $setting->id ] );
    }

    /**
     * Print javascript settings.
     *
     * @since 3.4.0
     */
    public function customize_preview_init() {
        $this->nonce_tick = check_ajax_referer( 'preview-customize_' . $this->get_stylesheet(), 'nonce' );

        $this->prepare_controls();

        wp_enqueue_script( 'customize-preview' );
        add_action( 'wp_head', array( $this, 'customize_preview_base' ) );
        add_action( 'wp_head', array( $this, 'customize_preview_html5' ) );
        add_action( 'wp_footer', array( $this, 'customize_preview_settings' ), 20 );
        add_action( 'shutdown', array( $this, 'customize_preview_signature' ), 1000 );
        add_filter( 'wp_die_handler', array( $this, 'remove_preview_signature' ) );

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

        /**
         * 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 );
    }

    /**
     * Print base element for preview frame.
     *
     * @since 3.4.0
     */
    public function customize_preview_base() {
        ?><base href="<?php echo home_url( '/' ); ?>" /><?php
    }

    /**
     * Print a workaround to handle HTML5 tags in IE < 9
     *
     * @since 3.4.0
     */
    public function customize_preview_html5() { ?>
        <!--[if lt IE 9]>
        <script type="text/javascript">
            var e = [ 'abbr', 'article', 'aside', 'audio', 'canvas', 'datalist', 'details',
                'figure', 'footer', 'header', 'hgroup', 'mark', 'menu', 'meter', 'nav',
                'output', 'progress', 'section', 'time', 'video' ];
            for ( var i = 0; i < e.length; i++ ) {
                document.createElement( e[i] );
            }
        </script>
        <![endif]--><?php
    }

    /**
     * Print javascript settings for preview frame.
     *
     * @since 3.4.0
     */
    public function customize_preview_settings() {
        $settings = array(
            'values'  => array(),
            'channel' => esc_js( $_POST['customize_messenger_channel'] ),
        );

        if ( 2 == $this->nonce_tick ) {
            $settings['nonce'] = array(
                'save' => wp_create_nonce( 'save-customize_' . $this->get_stylesheet() ),
                'preview' => wp_create_nonce( 'preview-customize_' . $this->get_stylesheet() )
            );
        }

        foreach ( $this->settings as $id => $setting ) {
            $settings['values'][ $id ] = $setting->js_value();
        }

        ?>
        <script type="text/javascript">
            var _wpCustomizeSettings = <?php echo json_encode( $settings ); ?>;
        </script>
        <?php
    }

    /**
     * Prints a signature so we can ensure the customizer was properly executed.
     *
     * @since 3.4.0
     */
    public function customize_preview_signature() {
        echo 'WP_CUSTOMIZER_SIGNATURE';
    }

    /**
     * Removes the signature in case we experience a case where the customizer was not properly executed.
     *
     * @since 3.4.0
     */
    public function remove_preview_signature( $return = null ) {
        remove_action( 'shutdown', array( $this, 'customize_preview_signature' ), 1000 );

        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 );
    }

    /**
     * Filter 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');
    }

    /**
     * Switch the theme and trigger the save() method on each setting.
     *
     * @since 3.4.0
     */
    public function save() {
        if ( ! $this->is_preview() )
            die;

        check_ajax_referer( 'save-customize_' . $this->get_stylesheet(), 'nonce' );

        // Do we have to switch themes?
        if ( ! $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();
        }

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

        foreach ( $this->settings as $setting ) {
            $setting->save();
        }

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

        die;
    }

    /**
     * Add a customize setting.
     *
     * @since 3.4.0
     *
     * @param WP_Customize_Setting|string $id Customize Setting object, or ID.
     * @param array $args                     Setting arguments; passed to WP_Customize_Setting
     *                                        constructor.
     */
    public function add_setting( $id, $args = array() ) {
        if ( is_a( $id, 'WP_Customize_Setting' ) )
            $setting = $id;
        else
            $setting = new WP_Customize_Setting( $this, $id, $args );

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

    /**
     * Retrieve a customize setting.
     *
     * @since 3.4.0
     *
     * @param string $id Customize Setting ID.
     * @return WP_Customize_Setting
     */
    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 section.
     *
     * @since 3.4.0
     *
     * @param WP_Customize_Section|string $id   Customize Section object, or Section ID.
     * @param array                       $args Section arguments.
     */
    public function add_section( $id, $args = array() ) {
        if ( is_a( $id, 'WP_Customize_Section' ) )
            $section = $id;
        else
            $section = new WP_Customize_Section( $this, $id, $args );

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

    /**
     * Retrieve a customize section.
     *
     * @since 3.4.0
     *
     * @param string $id Section ID.
     * @return WP_Customize_Section
     */
    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 ] );
    }

    /**
     * Add a customize control.
     *
     * @since 3.4.0
     *
     * @param WP_Customize_Control|string $id   Customize Control object, or ID.
     * @param array                       $args Control arguments; passed to WP_Customize_Control
     *                                          constructor.
     */
    public function add_control( $id, $args = array() ) {
        if ( is_a( $id, 'WP_Customize_Control' ) )
            $control = $id;
        else
            $control = new WP_Customize_Control( $this, $id, $args );

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

    /**
     * Retrieve a customize control.
     *
     * @since 3.4.0
     *
     * @param string $id ID of the control.
     * @return WP_Customize_Control $control The control object.
     */
    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 ] );
    }

    /**
     * Helper function to compare two objects by priority.
     *
     * @since 3.4.0
     *
     * @param object $a Object A.
     * @param object $b Object B.
     * @return int
     */
    protected final function _cmp_priority( $a, $b ) {
        $ap = $a->priority;
        $bp = $b->priority;

        if ( $ap == $bp )
            return 0;
        return ( $ap > $bp ) ? 1 : -1;
    }

    /**
     * Prepare settings and sections.
     *
     * 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() {

        $this->controls = array_reverse( $this->controls );
        $controls = array();

        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.
        // Reversing makes uasort sort by time added when conflicts occur.
        $this->sections = array_reverse( $this->sections );
        uasort( $this->sections, array( $this, '_cmp_priority' ) );
        $sections = array();

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

            usort( $section->controls, array( $this, '_cmp_priority' ) );
            $sections[] = $section;
        }
        $this->sections = $sections;
    }

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

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

        /* Site Title & Tagline */

        $this->add_section( 'title_tagline', array(
            'title'    => __( 'Site Title & Tagline' ),
            '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',
        ) );

        /* 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 Header Text' ),
            'section'  => 'title_tagline',
            'type'     => 'checkbox',
        ) );

        $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 */

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

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

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

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

        /* 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',
        ) );

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

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

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

        $this->add_control( 'background_repeat', array(
            'label'      => __( 'Background Repeat' ),
            'section'    => 'background_image',
            'type'       => 'radio',
            'choices'    => array(
                'no-repeat'  => __('No Repeat'),
                'repeat'     => __('Tile'),
                'repeat-x'   => __('Tile Horizontally'),
                'repeat-y'   => __('Tile Vertically'),
            ),
        ) );

        $this->add_setting( 'background_position_x', array(
            'default'        => 'left',
            'theme_supports' => 'custom-background',
        ) );

        $this->add_control( 'background_position_x', array(
            'label'      => __( 'Background Position' ),
            'section'    => 'background_image',
            'type'       => 'radio',
            'choices'    => array(
                'left'       => __('Left'),
                'center'     => __('Center'),
                'right'      => __('Right'),
            ),
        ) );

        $this->add_setting( 'background_attachment', array(
            'default'        => 'fixed',
            'theme_supports' => 'custom-background',
        ) );

        $this->add_control( 'background_attachment', array(
            'label'      => __( 'Background Attachment' ),
            'section'    => 'background_image',
            'type'       => 'radio',
            'choices'    => array(
                'fixed'      => __('Fixed'),
                'scroll'     => __('Scroll'),
            ),
        ) );

        // 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', 'position_x', 'repeat', 'attachment' ) as $prop ) {
                $this->get_setting( 'background_' . $prop )->transport = 'postMessage';
            }
        }

        /* Nav Menus */

        $locations      = get_registered_nav_menus();
        $menus          = wp_get_nav_menus();
        $menu_locations = get_nav_menu_locations();
        $num_locations  = count( array_keys( $locations ) );

        $this->add_section( 'nav', array(
            'title'          => __( 'Navigation' ),
            'theme_supports' => 'menus',
            'priority'       => 100,
            'description'    => sprintf( _n('Your theme supports %s menu. Select which menu you would like to use.', 'Your theme supports %s menus. Select which menu appears in each location.', $num_locations ), number_format_i18n( $num_locations ) ) . "\n\n" . __('You can edit your menu content on the Menus screen in the Appearance section.'),
        ) );

        if ( $menus ) {
            $choices = array( 0 => __( '&mdash; Select &mdash;' ) );
            foreach ( $menus as $menu ) {
                $choices[ $menu->term_id ] = wp_html_excerpt( $menu->name, 40, '&hellip;' );
            }

            foreach ( $locations as $location => $description ) {
                $menu_setting_id = "nav_menu_locations[{$location}]";

                $this->add_setting( $menu_setting_id, array(
                    'sanitize_callback' => 'absint',
                    'theme_supports'    => 'menus',
                ) );

                $this->add_control( $menu_setting_id, array(
                    'label'   => $description,
                    'section' => 'nav',
                    'type'    => 'select',
                    'choices' => $choices,
                ) );
            }
        }

        /* Static Front Page */
        // #WP19627

        $this->add_section( 'static_front_page', array(
            'title'          => __( 'Static Front Page' ),
        //    'theme_supports' => 'static-front-page',
            'priority'       => 120,
            'description'    => __( 'Your theme supports a static front page.' ),
        ) );

        $this->add_setting( 'show_on_front', array(
            'default'        => get_option( 'show_on_front' ),
            'capability'     => 'manage_options',
            'type'           => 'option',
        //    'theme_supports' => 'static-front-page',
        ) );

        $this->add_control( 'show_on_front', array(
            'label'   => __( 'Front page 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',
        //    'theme_supports' => 'static-front-page',
        ) );

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

        $this->add_setting( 'page_for_posts', array(
            'type'           => 'option',
            'capability'     => 'manage_options',
        //    'theme_supports' => 'static-front-page',
        ) );

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

    /**
     * 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 string
     */
    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;
    }
};

/**
 * Sanitizes a hex color.
 *
 * Returns either '', a 3 or 6 digit hex color (with #), or null.
 * For sanitizing values without a #, see sanitize_hex_color_no_hash().
 *
 * @since 3.4.0
 *
 * @param string $color
 * @return string|null
 */
function sanitize_hex_color( $color ) {
    if ( '' === $color )
        return '';

    // 3 or 6 hex digits, or the empty string.
    if ( preg_match('|^#([A-Fa-f0-9]{3}){1,2}$|', $color ) )
        return $color;

    return null;
}

/**
 * Sanitizes a hex color without a hash. Use sanitize_hex_color() when possible.
 *
 * Saving hex colors without a hash puts the burden of adding the hash on the
 * UI, which makes it difficult to use or upgrade to other color types such as
 * rgba, hsl, rgb, and html color names.
 *
 * Returns either '', a 3 or 6 digit hex color (without a #), or null.
 *
 * @since 3.4.0
 * @uses sanitize_hex_color()
 *
 * @param string $color
 * @return string|null
 */
function sanitize_hex_color_no_hash( $color ) {
    $color = ltrim( $color, '#' );

    if ( '' === $color )
        return '';

    return sanitize_hex_color( '#' . $color ) ? $color : null;
}

/**
 * Ensures that any hex color is properly hashed.
 * Otherwise, returns value untouched.
 *
 * This method should only be necessary if using sanitize_hex_color_no_hash().
 *
 * @since 3.4.0
 *
 * @param string $color
 * @return string
 */
function maybe_hash_hex_color( $color ) {
    if ( $unhashed = sanitize_hex_color_no_hash( $color ) )
        return '#' . $unhashed;

    return $color;
}