ing_settings, true );
			}
		}
	}

	public function initialize_wp_and_widget_strings() {
		$this->check_db_for_gettext_context();

		icl_register_string(
			WPML_ST_Blog_Name_And_Description_Hooks::STRING_DOMAIN,
			WPML_ST_Blog_Name_And_Description_Hooks::STRING_NAME_BLOGNAME,
			get_option( 'blogname' )
		);

		icl_register_string(
			WPML_ST_Blog_Name_And_Description_Hooks::STRING_DOMAIN,
			WPML_ST_Blog_Name_And_Description_Hooks::STRING_NAME_BLOGDESCRIPTION,
			get_option( 'blogdescription' )
		);

		wpml_st_init_register_widget_titles();

		$active_text_widgets = array();
		$widgets             = (array) get_option( 'sidebars_widgets' );
		foreach ( $widgets as $k => $w ) {
			if ( 'wp_inactive_widgets' != $k && $k != 'array_version' ) {
				if ( is_array( $widgets[ $k ] ) ) {
					foreach ( $widgets[ $k ] as $v ) {
						if ( preg_match( '#text-([0-9]+)#i', $v, $matches ) ) {
							$active_text_widgets[] = $matches[1];
						}
					}
				}
			}
		}

		$widget_text = get_option( 'widget_text' );
		if ( is_array( $widget_text ) ) {
			foreach ( $widget_text as $k => $w ) {
				if ( ! empty( $w ) && isset( $w['title'], $w['text'] ) && in_array( $k, $active_text_widgets ) && $w['text'] ) {
					icl_register_string( WPML_ST_WIDGET_STRING_DOMAIN, 'widget body - ' . md5( $w['text'] ), $w['text'] );
				}
			}
		}
	}

	public function get_current_string_language( $name ) {
		if ( isset( $this->current_string_language_cache[ $name ] ) ) {
			return $this->current_string_language_cache[ $name ];
		}

		$key              = 'current_language';
		$found            = false;
		$current_language = WPML_Non_Persistent_Cache::get( $key, 'WPML_String_Translation', $found );
		if ( ! $found ) {
			$wp_api           = $this->sitepress->get_wp_api();
			$current_language = $wp_api->constant( 'DOING_AJAX' )
								&& $this->is_admin_action_from_referer()
				? $this->sitepress->user_lang_by_authcookie()
				: $this->sitepress->get_current_language();
			WPML_Non_Persistent_Cache::set( $key, $current_language, 'WPML_String_Translation' );
		}

		if ( $this->should_use_admin_language()
			 && ! WPML_ST_Blog_Name_And_Description_Hooks::is_string( (string) $name ) ) {
			$admin_display_lang = $this->get_admin_language();
			$current_language   = $admin_display_lang ? $admin_display_lang : $current_language;
		}

		$ret = apply_filters(
			'icl_current_string_language',
			$current_language,
			$name
		);
		$this->current_string_language_cache[ $name ] = $ret === 'all'
			? $this->sitepress->get_default_language() : $ret;

		return $this->current_string_language_cache[ $name ];
	}

	public function should_use_admin_language() {
		$key                       = 'should_use_admin_language';
		$found                     = false;
		$should_use_admin_language = WPML_Non_Persistent_Cache::get( $key, 'WPML_String_Translation', $found );
		if ( ! $found ) {
			$wp_api                    = $this->sitepress->get_wp_api();
			$should_use_admin_language = ( $wp_api->constant( 'WP_ADMIN' )
										   && ( $this->is_admin_action_from_referer() || ! $wp_api->constant( 'DOING_AJAX' ) ) )
										 || $this->sitepress->is_admin_originated_rest_request();
			WPML_Non_Persistent_Cache::set( $key, $should_use_admin_language, 'WPML_String_Translation' );
		}

		return $should_use_admin_language;
	}

	public function get_admin_language() {
		if ( $this->sitepress->is_wpml_switch_language_triggered() ) {
			return $this->sitepress->get_admin_language();
		}

		if ( ! $this->admin_language ) {
			$this->admin_language = $this->sitepress->get_admin_language();
		}

		return $this->admin_language;
	}

	private function is_admin_action_from_referer() {
		if ( $this->is_admin_action_from_referer === null ) {
			$this->is_admin_action_from_referer = $this->sitepress->check_if_admin_action_from_referer();
		}

		return $this->is_admin_action_from_referer;
	}

	public function wpml_language_has_switched() {
		$this->current_string_language_cache = array();
	}

	public function change_string_lang_ajax_callback() {
		if ( ! $this->verify_ajax_call( 'wpml_change_string_language_nonce' ) ) {
			die( 'verification failed' );
		}
		check_ajax_referer( 'wpml_change_string_language_nonce', 'wpnonce' );

		if ( ! self::user_can_change_string_language() ) {
			wp_send_json_error( 'not allowed', 403 );

			return;
		}

		$strings = \WPML\Request\Payload::listField(
			$_POST,
			'strings',
			/* translators: Shown on the String Translation screen when a bulk change of the target language is chosen with no strings selected. */
			__( 'Select the strings you want to change first.', 'wpml-string-translation' )
		);
		if ( \WPML\Request\Payload::isRefusal( $strings ) ) {
			\WPML\Request\Payload::refuse( $strings );

			return;
		}

		global $wpdb;
		$change_string_language_dialog = new WPML_Change_String_Language_Select( $wpdb, $this->sitepress );

		$string_ids = array_map( 'intval', $strings );
		$lang = \WPML\Language\RequestedLanguage::validate(
			isset( $_POST['language'] ) ? sanitize_text_field( wp_unslash( $_POST['language'] ) ) : '',
			\WPML\Language\RequestedLanguage::SCOPE_CONFIGURED
		);
		if ( null === $lang ) {
			wp_send_json_error( 'invalid language', 400 );

			return;
		}
		$response = $change_string_language_dialog->change_language_of_strings( $string_ids, $lang );

		wp_send_json( $response );
	}

	public function change_string_lang_of_domain_ajax_callback() {
		if ( ! $this->verify_ajax_call( 'wpml_change_string_domain_language_nonce' ) ) {
			die( 'verification failed' );
		}
		check_ajax_referer( 'wpml_change_string_domain_language_nonce', 'wpnonce' );

		if ( ! self::user_can_change_string_language() ) {
			wp_send_json_error( 'not allowed', 403 );

			return;
		}

		global $wpdb, $sitepress;

		$to_lang = \WPML\Language\RequestedLanguage::validate(
			isset( $_POST['language'] ) ? sanitize_text_field( wp_unslash( $_POST['language'] ) ) : '',
			\WPML\Language\RequestedLanguage::SCOPE_CONFIGURED
		);
		if ( null === $to_lang ) {
			wp_send_json_error( 'invalid language', 400 );

			return;
		}
		$from_langs = array_values(
			array_filter(
				array_map(
					function ( $code ) {
						return \WPML\Language\RequestedLanguage::validate( $code, \WPML\Language\RequestedLanguage::SCOPE_CONFIGURED );
					},
					isset( $_POST['langs'] ) ? array_map( 'sanitize_text_field', wp_unslash( (array) $_POST['langs'] ) ) : array()
				)
			)
		);

		if ( ! empty( $_POST['langs'] ) && empty( $from_langs ) ) {
			wp_send_json_error( 'invalid language', 400 );

			return;
		}

		$change_string_language_domain_dialog = make( \WPML_Change_String_Domain_Language_Dialog::class );
		$response                             = $change_string_language_domain_dialog->change_language_of_strings(
			$_POST['domain'],
			$from_langs,
			$to_lang,
			$_POST['use_default'] == 'true'
		);

		wp_send_json( $response );
	}

	private function verify_ajax_call( $ajax_action ) {
		return isset( $_POST['wpnonce'] ) && wp_verify_nonce( $_POST['wpnonce'], $ajax_action );
	}

}