晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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<?php
namespace Elementor;
use Elementor\TemplateLibrary\Source_Local;
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
/**
* Elementor maintenance mode.
*
* Elementor maintenance mode handler class is responsible for the Elementor
* "Maintenance Mode" and the "Coming Soon" features.
*
* @since 1.4.0
*/
class Maintenance_Mode {
/**
* The options prefix.
*/
const OPTION_PREFIX = 'elementor_maintenance_mode_';
/**
* The maintenance mode.
*/
const MODE_MAINTENANCE = 'maintenance';
/**
* The coming soon mode.
*/
const MODE_COMING_SOON = 'coming_soon';
/**
* Get elementor option.
*
* Retrieve elementor option from the database.
*
* @since 1.4.0
* @access public
* @static
*
* @param string $option Option name. Expected to not be SQL-escaped.
* @param mixed $default_value Optional. Default value to return if the option
* does not exist. Default is false.
*
* @return bool False if value was not updated and true if value was updated.
*/
public static function get( $option, $default_value = false ) {
return get_option( self::OPTION_PREFIX . $option, $default_value );
}
/**
* Set elementor option.
*
* Update elementor option in the database.
*
* @since 1.4.0
* @access public
* @static
*
* @param string $option Option name. Expected to not be SQL-escaped.
* @param mixed $value Option value. Must be serializable if non-scalar.
* Expected to not be SQL-escaped.
*
* @return bool False if value was not updated and true if value was updated.
*/
public static function set( $option, $value ) {
return update_option( self::OPTION_PREFIX . $option, $value );
}
/**
* Body class.
*
* Add "Maintenance Mode" CSS classes to the body tag.
*
* Fired by `body_class` filter.
*
* @since 1.4.0
* @access public
*
* @param array $classes An array of body classes.
*
* @return array An array of body classes.
*/
public function body_class( $classes ) {
$classes[] = 'elementor-maintenance-mode';
return $classes;
}
/**
* Template redirect.
*
* Redirect to the "Maintenance Mode" template.
*
* Fired by `template_redirect` action.
*
* @since 1.4.0
* @access public
*/
public function template_redirect() {
if ( Plugin::$instance->preview->is_preview_mode() ) {
return;
}
$user = wp_get_current_user();
$exclude_mode = self::get( 'exclude_mode', [] );
$is_login_page = false;
/**
* Is login page
*
* Filters whether the maintenance mode displaying the login page or a regular page.
*
* @since 1.0.4
*
* @param bool $is_login_page Whether its a login page.
*/
$is_login_page = apply_filters( 'elementor/maintenance_mode/is_login_page', $is_login_page );
if ( $is_login_page ) {
return;
}
if ( 'logged_in' === $exclude_mode && is_user_logged_in() ) {
return;
}
if ( 'custom' === $exclude_mode ) {
$exclude_roles = self::get( 'exclude_roles', [] );
$user_roles = $user->roles;
if ( is_multisite() && is_super_admin() ) {
$user_roles[] = 'super_admin';
}
$compare_roles = array_intersect( $user_roles, $exclude_roles );
if ( ! empty( $compare_roles ) ) {
return;
}
}
add_filter( 'body_class', [ $this, 'body_class' ] );
if ( 'maintenance' === self::get( 'mode' ) ) {
$protocol = wp_get_server_protocol();
header( "$protocol 503 Service Unavailable", true, 503 );
header( 'Content-Type: text/html; charset=utf-8' );
header( 'Retry-After: 600' );
}
// Setup global post for Elementor\frontend so `_has_elementor_in_page = true`.
$GLOBALS['post'] = get_post( self::get( 'template_id' ) ); // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
// Set the template as `$wp_query->current_object` for `wp_title` and etc.
query_posts( [
'p' => self::get( 'template_id' ),
'post_type' => Source_Local::CPT,
] );
}
/**
* Register settings fields.
*
* Adds new "Maintenance Mode" settings fields to Elementor admin page.
*
* The method need to receive the an instance of the Tools settings page
* to add the new maintenance mode functionality.
*
* Fired by `elementor/admin/after_create_settings/{$page_id}` action.
*
* @since 1.4.0
* @access public
*
* @param Tools $tools An instance of the Tools settings page.
*/
public function register_settings_fields( Tools $tools ) {
$templates = Plugin::$instance->templates_manager->get_source( 'local' )->get_items( [
'type' => 'page',
] );
$templates_options = [];
foreach ( $templates as $template ) {
$templates_options[ $template['template_id'] ] = esc_html( $template['title'] );
}
ob_start();
$this->print_template_description();
$template_description = ob_get_clean();
$tools->add_tab(
'maintenance_mode', [
'label' => esc_html__( 'Maintenance Mode', 'elementor' ),
'sections' => [
'maintenance_mode' => [
'callback' => function() {
echo '<h2>' . esc_html__( 'Maintenance Mode', 'elementor' ) . '</h2>';
echo '<p>' . esc_html__( 'Set your entire website as MAINTENANCE MODE, meaning the site is offline temporarily for maintenance, or set it as COMING SOON mode, meaning the site is offline until it is ready to be launched.', 'elementor' ) . '</p>';
},
'fields' => [
'maintenance_mode_mode' => [
'label' => esc_html__( 'Choose Mode', 'elementor' ),
'field_args' => [
'type' => 'select',
'std' => '',
'options' => [
'' => esc_html__( 'Disabled', 'elementor' ),
self::MODE_COMING_SOON => esc_html__( 'Coming Soon', 'elementor' ),
self::MODE_MAINTENANCE => esc_html__( 'Maintenance', 'elementor' ),
],
'desc' => '<div class="elementor-maintenance-mode-description" data-value="" style="display: none">' .
esc_html__( 'Choose between Coming Soon mode (returning HTTP 200 code) or Maintenance Mode (returning HTTP 503 code).', 'elementor' ) .
'</div>' .
'<div class="elementor-maintenance-mode-description" data-value="maintenance" style="display: none">' .
esc_html__( 'Maintenance Mode returns HTTP 503 code, so search engines know to come back a short time later. It is not recommended to use this mode for more than a couple of days.', 'elementor' ) .
'</div>' .
'<div class="elementor-maintenance-mode-description" data-value="coming_soon" style="display: none">' .
esc_html__( 'Coming Soon returns HTTP 200 code, meaning the site is ready to be indexed.', 'elementor' ) .
'</div>',
],
],
'maintenance_mode_exclude_mode' => [
'label' => esc_html__( 'Who Can Access', 'elementor' ),
'field_args' => [
'class' => 'elementor-default-hide',
'type' => 'select',
'std' => 'logged_in',
'options' => [
'logged_in' => esc_html__( 'Logged In', 'elementor' ),
'custom' => esc_html__( 'Custom', 'elementor' ),
],
],
],
'maintenance_mode_exclude_roles' => [
'label' => esc_html__( 'Roles', 'elementor' ),
'field_args' => [
'class' => 'elementor-default-hide',
'type' => 'checkbox_list_roles',
],
'setting_args' => [ __NAMESPACE__ . '\Settings_Validations', 'checkbox_list' ],
],
'maintenance_mode_template_id' => [
'label' => esc_html__( 'Choose Template', 'elementor' ),
'field_args' => [
'class' => 'elementor-default-hide',
'type' => 'select',
'std' => '',
'show_select' => true,
'options' => $templates_options,
'desc' => $template_description,
],
],
],
],
],
]
);
}
/**
* Add menu in admin bar.
*
* Adds "Maintenance Mode" items to the WordPress admin bar.
*
* Fired by `admin_bar_menu` filter.
*
* @since 1.4.0
* @access public
*
* @param \WP_Admin_Bar $wp_admin_bar WP_Admin_Bar instance, passed by reference.
*/
public function add_menu_in_admin_bar( \WP_Admin_Bar $wp_admin_bar ) {
$wp_admin_bar->add_node( [
'id' => 'elementor-maintenance-on',
'title' => esc_html__( 'Maintenance Mode ON', 'elementor' ),
'href' => Tools::get_url() . '#tab-maintenance_mode',
] );
$document = Plugin::$instance->documents->get( self::get( 'template_id' ) );
$wp_admin_bar->add_node( [
'id' => 'elementor-maintenance-edit',
'parent' => 'elementor-maintenance-on',
'title' => esc_html__( 'Edit Template', 'elementor' ),
'href' => $document ? $document->get_edit_url() : '',
] );
}
/**
* Print style.
*
* Adds custom CSS to the HEAD html tag. The CSS that emphasise the maintenance
* mode with red colors.
*
* Fired by `admin_head` and `wp_head` filters.
*
* @since 1.4.0
* @access public
*/
public function print_style() {
?>
<style>#wp-admin-bar-elementor-maintenance-on > a { background-color: #dc3232; }
#wp-admin-bar-elementor-maintenance-on > .ab-item:before { content: "\f160"; top: 2px; }</style>
<?php
}
public function on_update_mode( $old_value, $value ) {
if ( $old_value !== $value ) {
do_action( 'elementor/maintenance_mode/mode_changed', $old_value, $value );
}
}
/**
* Maintenance mode constructor.
*
* Initializing Elementor maintenance mode.
*
* @since 1.4.0
* @access public
*/
public function __construct() {
add_action( 'update_option_elementor_maintenance_mode_mode', [ $this, 'on_update_mode' ], 10, 2 );
$is_enabled = (bool) self::get( 'mode' ) && (bool) self::get( 'template_id' );
if ( is_admin() ) {
$page_id = Tools::PAGE_ID;
add_action( "elementor/admin/after_create_settings/{$page_id}", [ $this, 'register_settings_fields' ] );
}
if ( ! $is_enabled ) {
return;
}
add_action( 'admin_bar_menu', [ $this, 'add_menu_in_admin_bar' ], 300 );
add_action( 'admin_head', [ $this, 'print_style' ] );
add_action( 'wp_head', [ $this, 'print_style' ] );
// Priority = 11 that is *after* WP default filter `redirect_canonical` in order to avoid redirection loop.
add_action( 'template_redirect', [ $this, 'template_redirect' ], 11 );
}
/**
* Print Template Description
*
* Prints the template description
*
* @since 2.2.0
* @access private
*/
private function print_template_description() {
$template_id = self::get( 'template_id' );
$edit_url = '';
if ( $template_id && get_post( $template_id ) ) {
$edit_url = Plugin::$instance->documents->get( $template_id )->get_edit_url();
}
?>
<a target="_blank" class="elementor-edit-template" style="display: none" href="<?php echo esc_url( $edit_url ); ?>"><?php echo esc_html__( 'Edit Template', 'elementor' ); ?></a>
<div class="elementor-maintenance-mode-error"><?php echo esc_html__( 'To enable maintenance mode you have to set a template for the maintenance mode page.', 'elementor' ); ?></div>
<div class="elementor-maintenance-mode-error">
<?php
printf(
/* translators: %1$s Link open tag, %2$s: Link close tag. */
esc_html__( 'Select one or go ahead and %1$screate one%2$s now.', 'elementor' ),
'<a target="_blank" href="' . esc_url( admin_url( 'post-new.php?post_type=' . Source_Local::CPT ) ) . '">',
'</a>'
);
?>
</div>
<?php
}
}