Sync plugins from current page

Signed-off-by: Adrian Nöthlich <git@promasu.tech>

wp-content/plugins/contact-form-7/modules/listo.php

@@ -0,0 +1,30 @@
+<?php
+/**
+** Retrieve list data from the Listo plugin.
+** Listo http://wordpress.org/plugins/listo/
+**/
+
+add_filter( 'wpcf7_form_tag_data_option', 'wpcf7_listo', 10, 3 );
+
+function wpcf7_listo( $data, $options, $args ) {
+	if ( ! function_exists( 'listo' ) ) {
+		return $data;
+	}
+
+	$args = wp_parse_args( $args, array() );
+
+	$contact_form = wpcf7_get_current_contact_form();
+	$args['locale'] = $contact_form->locale();
+
+	foreach ( (array) $options as $option ) {
+		$option = explode( '.', $option );
+		$type = $option[0];
+		$args['group'] = isset( $option[1] ) ? $option[1] : null;
+
+		if ( $list = listo( $type, $args ) ) {
+			$data = array_merge( (array) $data, $list );
+		}
+	}
+
+	return $data;
+}