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<?php

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abstract class WPML_Wizard extends WPML_Twig_Template_Loader {

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const TEMPLATE_PATH = '/templates/wizard';

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const NONCE = 'wpml_wizard_fetch_content';

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/** @var array $model */

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private $model = array();

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public function __construct() {

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parent::__construct( array( WPML_PLUGIN_PATH . self::TEMPLATE_PATH ) );

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}

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abstract protected function initialize_steps();

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abstract protected function enqueue_scripts();

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public function render() {

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$this->initialize_steps();

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$this->initialize_strings();

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$this->set_nonce();

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$this->enqueue_main_script();

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$this->enqueue_scripts();

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return $this->get_template()->show( $this->model, 'wizard.twig' );

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}

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/**

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* @param string $slug

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* @param string $title

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protected function add_step( $slug, $title ) {

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$this->model['steps'][] = array(

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'slug' => $slug,

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'title' => $title,

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);

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}

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/**

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* @param string $current_step_slug

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protected function set_current_step( $current_step_slug ) {

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$allowed_step_slugs = wp_list_pluck( $this->model['steps'], 'slug' );

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if ( ! in_array( $current_step_slug, $allowed_step_slugs, true ) ) {

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$current_step_slug = reset( $allowed_step_slugs );

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}

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$this->model['current_step_slug'] = $current_step_slug;

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}

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protected function initialize_strings() {

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$this->model['strings'] = array(

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'back' => __( '<<< Back', 'sitepress' ),

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'next' => __( 'Next >>>', 'sitepress' ),

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'finished' => __( 'Finished', 'sitepress' ),

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);

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}

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private function set_nonce() {

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$this->model['nonce'] = wp_create_nonce( self::NONCE );

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}

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private function enqueue_main_script() {

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wp_register_script( 'wpml-wizard', ICL_PLUGIN_URL . '/res/js/wizard.js', array( 'jquery' ), ICL_SITEPRESS_VERSION, true );

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wp_enqueue_script( 'wpml-wizard' );

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wp_register_style( 'wpml-wizard', ICL_PLUGIN_URL . '/res/css/wpml-wizard.css' );

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wp_enqueue_style( 'wpml-wizard' );

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}

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}

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