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<?php

final class WP_Customize_Selective_Refresh
{
    const RENDER_QUERY_VAR = 'wp_customize_render_partials';
    public $manager;
    protected $partials = array();
    protected $triggered_errors = array();
    protected $current_partial_id;
    public function __construct(WP_Customize_Manager $manager)
    {
        $this->manager = $manager;
        require_once ABSPATH . WPINC . '/customize/class-wp-customize-partial.php';
        add_action('customize_preview_init', array($this, 'init_preview'));
    }
    public function partials()
    {
        return $this->partials;
    }
    public function add_partial($id, $args = array())
    {
        if ($id instanceof WP_Customize_Partial) {
            $partial = $id;
        } else {
            $class = 'WP_Customize_Partial';
            $args = apply_filters('customize_dynamic_partial_args', $args, $id);
            $class = apply_filters('customize_dynamic_partial_class', $class, $id, $args);
            $partial = new $class($this, $id, $args);
        }
        $this->partials[$partial->id] = $partial;
        return $partial;
    }
    public function get_partial($id)
    {
        if (isset($this->partials[$id])) {
            return $this->partials[$id];
        } else {
            return null;
        }
    }
    public function remove_partial($id)
    {
        unset($this->partials[$id]);
    }
    public function init_preview()
    {
        add_action('template_redirect', array($this, 'handle_render_partials_request'));
        add_action('wp_enqueue_scripts', array($this, 'enqueue_preview_scripts'));
    }
    public function enqueue_preview_scripts()
    {
        wp_enqueue_script('customize-selective-refresh');
        add_action('wp_footer', array($this, 'export_preview_data'), 1000);
    }
    public function export_preview_data()
    {
        $partials = array();
        foreach ($this->partials() as $partial) {
            if ($partial->check_capabilities()) {
                $partials[$partial->id] = $partial->json();
            }
        }
        $switched_locale = switch_to_locale(get_user_locale());
        $l10n = array('shiftClickToEdit' => __('Shift-click to edit this element.'), 'clickEditMenu' => __('Click to edit this menu.'), 'clickEditWidget' => __('Click to edit this widget.'), 'clickEditTitle' => __('Click to edit the site title.'), 'clickEditMisc' => __('Click to edit this element.'), 'badDocumentWrite' => sprintf(__('%s is forbidden'), 'document.write()'));
        if ($switched_locale) {
            restore_previous_locale();
        }
        $exports = array('partials' => $partials, 'renderQueryVar' => self::RENDER_QUERY_VAR, 'l10n' => $l10n);
        printf('<script>var _customizePartialRefreshExports = %s;</script>', wp_json_encode($exports));
    }
    public function add_dynamic_partials($partial_ids)
    {
        $new_partials = array();
        foreach ($partial_ids as $partial_id) {
            $partial = $this->get_partial($partial_id);
            if ($partial) {
                continue;
            }
            $partial_args = false;
            $partial_class = 'WP_Customize_Partial';
            $partial_args = apply_filters('customize_dynamic_partial_args', $partial_args, $partial_id);
            if (false === $partial_args) {
                continue;
            }
            $partial_class = apply_filters('customize_dynamic_partial_class', $partial_class, $partial_id, $partial_args);
            $partial = new $partial_class($this, $partial_id, $partial_args);
            $this->add_partial($partial);
            $new_partials[] = $partial;
        }
        return $new_partials;
    }
    public function is_render_partials_request()
    {
        return !empty($_POST[self::RENDER_QUERY_VAR]);
    }
    public function handle_error($errno, $errstr, $errfile = null, $errline = null)
    {
        $this->triggered_errors[] = array('partial' => $this->current_partial_id, 'error_number' => $errno, 'error_string' => $errstr, 'error_file' => $errfile, 'error_line' => $errline);
        return true;
    }
    public function handle_render_partials_request()
    {
        if (!$this->is_render_partials_request()) {
            return;
        }
        if (!is_customize_preview()) {
            wp_send_json_error('expected_customize_preview', 403);
        } elseif (!isset($_POST['partials'])) {
            wp_send_json_error('missing_partials', 400);
        }
        status_header(200);
        $partials = json_decode(wp_unslash($_POST['partials']), true);
        if (!is_array($partials)) {
            wp_send_json_error('malformed_partials');
        }
        $this->add_dynamic_partials(array_keys($partials));
        do_action('customize_render_partials_before', $this, $partials);
        set_error_handler(array($this, 'handle_error'), error_reporting());
        $contents = array();
        foreach ($partials as $partial_id => $container_contexts) {
            $this->current_partial_id = $partial_id;
            if (!is_array($container_contexts)) {
                wp_send_json_error('malformed_container_contexts');
            }
            $partial = $this->get_partial($partial_id);
            if (!$partial || !$partial->check_capabilities()) {
                $contents[$partial_id] = null;
                continue;
            }
            $contents[$partial_id] = array();
            if (empty($container_contexts)) {
                $contents[$partial_id][] = $partial->render(null);
            } else {
                foreach ($container_contexts as $container_context) {
                    $contents[$partial_id][] = $partial->render($container_context);
                }
            }
        }
        $this->current_partial_id = null;
        restore_error_handler();
        do_action('customize_render_partials_after', $this, $partials);
        $response = array('contents' => $contents);
        if (defined('WP_DEBUG_DISPLAY') && WP_DEBUG_DISPLAY) {
            $response['errors'] = $this->triggered_errors;
        }
        $setting_validities = $this->manager->validate_setting_values($this->manager->unsanitized_post_values());
        $exported_setting_validities = array_map(array($this->manager, 'prepare_setting_validity_for_js'), $setting_validities);
        $response['setting_validities'] = $exported_setting_validities;
        $response = apply_filters('customize_render_partials_response', $response, $this, $partials);
        wp_send_json_success($response);
    }
}