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<?php

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/**

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* Class WPML_Multilingual_Options

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class WPML_Multilingual_Options {

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private $array_helper;

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private $registered_options = array();

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private $sitepress;

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private $utils;

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/**

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* WPML_Multilingual_Options constructor.

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* @param SitePress $sitepress

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* @param WPML_Multilingual_Options_Array_Helper $array_helper

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* @param WPML_Multilingual_Options_Utils $utils

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public function __construct( SitePress $sitepress, WPML_Multilingual_Options_Array_Helper $array_helper, WPML_Multilingual_Options_Utils $utils ) {

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$this->sitepress = $sitepress;

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$this->array_helper = $array_helper;

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$this->utils = $utils;

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}

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/**

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* @param string $new_code New WPML default language code

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* @param string $previous_default Previous WPML default language code

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public function default_language_changed_action( $new_code, $previous_default ) {

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if ( $new_code !== $previous_default ) {

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foreach ( $this->registered_options as $option_name ) {

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$default_options = $this->utils->get_option_without_filtering( $option_name, null );

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$translated_option = get_option( "{$option_name}_{$new_code}", null );

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if ( $translated_option ) {

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$new_value = $this->merge( $default_options, $translated_option );

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remove_filter( "pre_option_{$option_name}", array( $this, 'pre_option_filter' ), 10 );

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remove_filter(

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"pre_update_option_{$option_name}",

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array(

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$this,

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'pre_update_option_filter',

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);

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update_option( $option_name, $new_value );

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delete_option( "{$option_name}_{$new_code}" );

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$new_translated_option = $default_options;

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if ( is_array( $default_options ) && is_array( $new_value ) ) {

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$new_translated_option = $this->array_helper->array_diff_recursive( $default_options, $new_value );

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}

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update_option( "{$option_name}_{$previous_default}", $new_translated_option, 'no' );

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$this->multilingual_options_action( $option_name );

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}

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$this->invalidate_cache( $option_name, $previous_default );

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$this->invalidate_cache( $option_name, $new_code );

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}

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}

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}

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/**

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* @param string $option_name

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public function multilingual_options_action( $option_name ) {

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if ( ! in_array( $option_name, $this->registered_options, true ) ) {

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$this->registered_options[] = $option_name;

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$current_language = $this->sitepress->get_current_language();

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$default_language = $this->sitepress->get_default_language();

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if ( $current_language !== $default_language ) {

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add_filter( "pre_option_{$option_name}", array( $this, 'pre_option_filter' ), 10, 2 );

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add_filter( "pre_update_option_{$option_name}", array( $this, 'pre_update_option_filter' ), 10, 3 );

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}

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}

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}

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public function init_hooks() {

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add_action( 'wpml_multilingual_options', array( $this, 'multilingual_options_action' ) );

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add_action( 'icl_after_set_default_language', array( $this, 'default_language_changed_action' ), 10, 2 );

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}

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/**

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* @param mixed $value

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* @param string $option_name

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* @return mixed

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public function pre_option_filter( $value, $option_name ) {

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$current_language = $this->sitepress->get_current_language();

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$cache_found = null;

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$options_filtered = wp_cache_get( "{$option_name}_{$current_language}_filtered", 'options', false, $cache_found );

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if ( $cache_found ) {

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return $options_filtered;

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}

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$default_options = $this->utils->get_option_without_filtering( $option_name, null );

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$translated_value = get_option( "{$option_name}_{$current_language}", $value );

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$value = $this->merge( $default_options, $translated_value );

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$this->update_cache( $option_name, $current_language, $value );

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return $value;

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}

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/**

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* @param string $option_name

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* @param string $language

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* @param mixed $value

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* @return bool

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private function update_cache( $option_name, $language, $value ) {

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return wp_cache_set( "{$option_name}_{$language}_filtered", $value, 'options' );

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}

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/**

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* @param $new_value

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* @param $old_value

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* @param $option_name

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* @return array

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public function pre_update_option_filter( $new_value, $old_value, $option_name ) {

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$current_language = $this->sitepress->get_current_language();

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$default_options = $this->utils->get_option_without_filtering( $option_name, null );

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$translated_option = null;

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if ( is_array( $new_value ) && is_array( $default_options ) ) {

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$translated_option = $this->array_helper->array_diff_recursive( $new_value, $default_options );

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} elseif ( $new_value !== $default_options ) {

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$translated_option = $new_value;

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}

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update_option( "{$option_name}_{$current_language}", $translated_option, 'no' );

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$this->invalidate_cache( $option_name, $current_language );

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return $default_options;

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}

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/**

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* @param string $option_name

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* @param string $language

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* @return bool

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private function invalidate_cache( $option_name, $language ) {

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return wp_cache_delete( "{$option_name}_{$language}_filtered", 'options' );

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}

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/**

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* @param array $target

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* @param array $source

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* @return array

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private function merge( $target, $source ) {

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$value = $source;

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if ( is_array( $source ) && is_array( $target ) ) {

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$value = $this->array_helper->recursive_merge( $target, $source );

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}

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return $value;

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}

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}

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