As the sun rises and the forest mist clears, and the clouds return and the caves darken, these changes of light and shadow are the morning and evening in the mountains. Wildflowers bloom with their subtle fragrance, fine trees flourish with their dense shade, the wind and frost are pure and clean, and the water recedes to reveal the rocks—these are the four seasons in the mountains. Going out in the morning and returning in the evening, the scenery of the four seasons is different, and the joy is endless.至于负者歌于途,行者休于树,前者呼,后者应,伛偻提携,往来而不绝者,滁人游也。临溪而渔,溪深而鱼肥,酿泉为酒,泉香而酒洌,山肴野蔌,杂然而前陈者,太守宴也。宴酣之乐,非丝非竹,射者中,弈者胜,觥筹交错,起坐而喧哗者,众宾欢也。苍颜白发,颓然乎其间者,太守醉也。
<?php
/**
* @package Polylang
*/
/**
* A class to manage admin notices
* displayed only to admin, based on 'manage_options' capability
* and only on dashboard, plugins and Polylang admin pages
*
* @since 2.3.9
* @since 2.7 Dismissed notices are stored in an option instead of a user meta
*/
class PLL_Admin_Notices {
/**
* Stores the plugin options.
*
* @var \WP_Syntex\Polylang\Options\Options
*/
protected $options;
/**
* Stores custom notices.
*
* @var string[]
*/
private static $notices = array();
/**
* Constructor
* Setup actions
*
* @since 2.3.9
*
* @param PLL_Admin_Base $polylang The Polylang object.
*/
public function __construct( PLL_Admin_Base $polylang ) {
$this->options = $polylang->options;
add_action( 'admin_init', array( $this, 'hide_notice' ) );
add_action( 'admin_notices', array( $this, 'display_notices' ) );
}
/**
* Add a custom notice
*
* @since 2.3.9
*
* @param string $name Notice name
* @param string $html Content of the notice
* @return void
*/
public static function add_notice( $name, $html ) {
self::$notices[ $name ] = $html;
}
/**
* Get custom notices.
*
* @since 2.3.9
*
* @return string[]
*/
public static function get_notices() {
return self::$notices;
}
/**
* Has a notice been dismissed?
*
* @since 2.3.9
*
* @param string $notice Notice name
* @return bool
*/
public static function is_dismissed( $notice ) {
$dismissed = get_option( 'pll_dismissed_notices', array() );
// Handle legacy user meta
$dismissed_meta = get_user_meta( get_current_user_id(), 'pll_dismissed_notices', true );
if ( is_array( $dismissed_meta ) ) {
if ( array_diff( $dismissed_meta, $dismissed ) ) {
$dismissed = array_merge( $dismissed, $dismissed_meta );
update_option( 'pll_dismissed_notices', $dismissed );
}
if ( ! is_multisite() ) {
// Don't delete on multisite to avoid the notices to appear in other sites.
delete_user_meta( get_current_user_id(), 'pll_dismissed_notices' );
}
}
return in_array( $notice, $dismissed );
}
/**
* Should we display notices on this screen?
*
* @since 2.3.9
*
* @param string $notice The notice name.
* @param array $allowed_screens The screens allowed to display the notice.
* If empty, default screens are used, i.e. dashboard, plugins, languages, strings and settings.
*
* @return bool
*/
protected function can_display_notice( string $notice, array $allowed_screens = array() ) {
$screen = get_current_screen();
if ( empty( $screen ) ) {
return false;
}
if ( empty( $allowed_screens ) ) {
$allowed_screens = array(
'dashboard',
'plugins',
PLL_Admin_Base::get_screen_id( 'lang' ),
PLL_Admin_Base::get_screen_id( 'strings' ),
PLL_Admin_Base::get_screen_id( 'settings' ),
);
}
/**
* Filters admin notices which can be displayed.
*
* @since 2.7.0
*
* @param bool $display Whether the notice should be displayed or not.
* @param string $notice The notice name.
*/
return apply_filters( 'pll_can_display_notice', in_array( $screen->id, $allowed_screens, true ), $notice );
}
/**
* Stores a dismissed notice in the database.
*
* @since 2.3.9
*
* @param string $notice Notice name.
* @return void
*/
public static function dismiss( $notice ) {
$dismissed = get_option( 'pll_dismissed_notices', array() );
if ( ! in_array( $notice, $dismissed ) ) {
$dismissed[] = $notice;
update_option( 'pll_dismissed_notices', array_unique( $dismissed ) );
}
}
/**
* Handle a click on the dismiss button
*
* @since 2.3.9
*
* @return void
*/
public function hide_notice() {
if ( isset( $_GET['pll-hide-notice'], $_GET['_pll_notice_nonce'] ) ) {
$notice = sanitize_key( $_GET['pll-hide-notice'] );
check_admin_referer( $notice, '_pll_notice_nonce' );
self::dismiss( $notice );
wp_safe_redirect( remove_query_arg( array( 'pll-hide-notice', '_pll_notice_nonce' ), wp_get_referer() ) );
exit;
}
}
/**
* Displays notices
*
* @since 2.3.9
*
* @return void
*/
public function display_notices() {
if ( current_user_can( 'manage_options' ) ) {
// Core notices
if ( defined( 'WOOCOMMERCE_VERSION' ) && ! defined( 'PLLWC_VERSION' ) && $this->can_display_notice( 'pllwc' ) && ! static::is_dismissed( 'pllwc' ) ) {
$this->pllwc_notice();
}
if ( ! defined( 'POLYLANG_PRO' ) && $this->can_display_notice( 'review' ) && ! static::is_dismissed( 'review' ) && ! empty( $this->options['first_activation'] ) && time() > $this->options['first_activation'] + 15 * DAY_IN_SECONDS ) {
$this->review_notice();
}
$allowed_screen = PLL_Admin_Base::get_screen_id( 'strings' );
if (
( ! empty( $this->options['previous_version'] ) && version_compare( $this->options['previous_version'], '3.7.0', '<' ) )
&& $this->can_display_notice( 'empty-strings-translations', (array) $allowed_screen )
&& ! static::is_dismissed( 'empty-strings-translations' )
) {
$this->empty_strings_translations_notice();
}
// Custom notices
foreach ( static::get_notices() as $notice => $html ) {
if ( $this->can_display_notice( $notice ) && ! static::is_dismissed( $notice ) ) {
?>
<div class="pll-notice notice notice-info">
<?php
$this->dismiss_button( $notice );
echo wp_kses_post( $html );
?>
</div>
<?php
}
}
}
}
/**
* Displays a dismiss button
*
* @since 2.3.9
*
* @param string $name Notice name
* @return void
*/
public function dismiss_button( $name ) {
printf(
'<a class="notice-dismiss" href="%s"><span class="screen-reader-text">%s</span></a>',
esc_url( wp_nonce_url( add_query_arg( 'pll-hide-notice', $name ), $name, '_pll_notice_nonce' ) ),
/* translators: accessibility text */
esc_html__( 'Dismiss this notice.', 'polylang' )
);
}
/**
* Displays a notice if WooCommerce is activated without Polylang for WooCommerce
*
* @since 2.3.9
*
* @return void
*/
private function pllwc_notice() {
?>
<div class="pll-notice notice notice-warning">
<?php $this->dismiss_button( 'pllwc' ); ?>
<p>
<?php
printf(
/* translators: %1$s is link start tag, %2$s is link end tag. */
esc_html__( 'We have noticed that you are using Polylang with WooCommerce. To ensure compatibility, we recommend you use %1$sPolylang for WooCommerce%2$s.', 'polylang' ),
'<a href="https://polylang.pro/pricing/polylang-for-woocommerce/">',
'</a>'
);
?>
</p>
</div>
<?php
}
/**
* Displays a notice asking for a review
*
* @since 2.3.9
*
* @return void
*/
private function review_notice() {
?>
<div class="pll-notice notice notice-info">
<?php $this->dismiss_button( 'review' ); ?>
<p>
<?php
printf(
/* translators: %1$s is link start tag, %2$s is link end tag. */
esc_html__( 'We have noticed that you have been using Polylang for some time. We hope you love it, and we would really appreciate it if you would %1$sgive us a 5 stars rating%2$s.', 'polylang' ),
'<a href="https://wordpress.org/support/plugin/polylang/reviews/?rate=5#new-post">',
'</a>'
);
?>
</p>
</div>
<?php
}
/**
* Displays a notice about the empty strings translations.
*
* @since 3.7
*
* @return void
*/
private function empty_strings_translations_notice() {
?>
<div class="pll-notice notice notice-info">
<?php $this->dismiss_button( 'empty-strings-translations' ); ?>
<p>
<?php esc_html_e( 'Translations matching the original string are shown as empty in the table. Untranslated content remains unchanged.', 'polylang' ); ?>
</p>
</div>
<?php
}
}