325 lines
		
	
	
		
			9.5 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			325 lines
		
	
	
		
			9.5 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
| <?php
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| /**
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|  * Register fake page for portfolio preview.
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|  *
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|  * @package visual-portfolio/preview
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|  */
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| 
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| if ( ! defined( 'ABSPATH' ) ) {
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| 	exit;
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| }
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| 
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| /**
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|  * Class Visual_Portfolio_Preview
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|  */
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| class Visual_Portfolio_Preview {
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| 
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| 	/**
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| 	 * Preview enabled.
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| 	 *
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| 	 * @var bool
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| 	 */
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| 	public $preview_enabled = false;
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| 
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| 	/**
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| 	 * Visual_Portfolio_Preview constructor.
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| 	 */
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| 	public function __construct() {
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| 		$this->init_hooks();
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| 	}
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| 
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| 	/**
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| 	 * Hooks.
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| 	 */
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| 	public function init_hooks() {
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| 		add_action( 'init', array( $this, 'is_preview_check' ) );
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| 		add_filter( 'pre_handle_404', array( $this, 'pre_handle_404' ) );
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| 		add_filter( 'vpf_get_options', array( $this, 'filter_preview_option' ) );
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| 		add_action( 'template_redirect', array( $this, 'template_redirect' ) );
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| 		add_action( 'wp_enqueue_scripts', array( $this, 'wp_enqueue_scripts' ), 11 );
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| 
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| 		// Localize script in editor, FSE, and Elementor.
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| 		add_action( 'enqueue_block_assets', array( $this, 'localize_scripts' ) );
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| 		add_action( 'wp_print_scripts', array( $this, 'localize_elementor_scripts' ), 9 );
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| 	}
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| 
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| 	/**
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| 	 * Prepare preview URL to use from our preview iframe.
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| 	 *
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| 	 * @return string
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| 	 */
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| 	public function get_preview_url() {
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| 		add_filter( 'pre_option_permalink_structure', '__return_empty_string' );
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| 
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| 		$preview_url = set_url_scheme(
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| 			add_query_arg(
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| 				array(
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| 					'vp_preview'      => 'vp_preview',
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| 					'vp_preview_time' => time(),
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| 				),
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| 				// We used `get_site_url()` before, but it does not work on some hosts,
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| 				// that have custom URL structure in admin area.
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| 				//
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| 				// For example:
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| 				// * Admin URL: https://mysite.com/wp/
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| 				// * Front URL: https://mysite.com/
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| 				//
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| 				// Use `trailingslashit` to fix some rare servers problems
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| 				// when preview is not working if no trailing slash in URL.
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| 				//
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| 				// For example:
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| 				// * Error:   https://mysite.com/wp
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| 				// * Success: https://mysite.com/wp/
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| 				// .
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| 				trailingslashit( home_url( '/' ) )
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| 			)
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| 		);
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| 
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| 		remove_filter( 'pre_option_permalink_structure', '__return_empty_string' );
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| 
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| 		return $preview_url;
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| 	}
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| 
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| 	/**
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| 	 * Localize scripts with preview URL.
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| 	 */
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| 	public function localize_scripts() {
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| 		if ( ! is_admin() ) {
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| 			return;
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| 		}
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| 
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| 		$preview_url = $this->get_preview_url();
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| 
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| 		// Localize scripts.
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| 		wp_localize_script(
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| 			'visual-portfolio-gutenberg',
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| 			'VPAdminGutenbergVariables',
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| 			array(
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| 				'preview_url' => $preview_url,
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| 				'nonce'       => wp_create_nonce( 'vp-ajax-nonce' ),
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| 			)
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| 		);
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| 	}
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| 
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| 	/**
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| 	 * Localize scripts with preview URL for Elementor.
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| 	 */
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| 	public function localize_elementor_scripts() {
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| 		if ( ! wp_script_is( 'visual-portfolio-elementor', 'registered' ) ) {
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| 			return;
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| 		}
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| 
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| 		$preview_url = $this->get_preview_url();
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| 
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| 		// Localize scripts.
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| 		wp_localize_script(
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| 			'visual-portfolio-elementor',
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| 			'VPAdminElementorVariables',
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| 			array(
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| 				'preview_url' => $preview_url,
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| 				'nonce'       => wp_create_nonce( 'vp-ajax-nonce' ),
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| 			)
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| 		);
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| 	}
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| 
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| 	/**
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| 	 * Check if the page is preview.
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| 	 */
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| 	public function is_preview_check() {
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| 		$frame = false;
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| 		if ( isset( $_GET['vp_preview'] ) && isset( $_REQUEST['vp_preview_nonce'] ) && wp_verify_nonce( sanitize_key( $_REQUEST['vp_preview_nonce'] ), 'vp-ajax-nonce' ) ) {
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|             // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.ValidatedSanitizedInput.MissingUnslash
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| 			$frame = isset( $_POST['vp_preview_frame'] ) ? Visual_Portfolio_Security::sanitize_boolean( $_POST['vp_preview_frame'] ) : false;
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| 			$id    = isset( $_POST['vp_preview_frame_id'] ) ? sanitize_text_field( wp_unslash( $_POST['vp_preview_frame_id'] ) ) : false;
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| 
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| 			// Elementor preview.
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| 			if ( ! $frame && ! $id && isset( $_REQUEST['vp_preview_type'] ) && 'elementor' === $_REQUEST['vp_preview_type'] ) {
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|                 // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.ValidatedSanitizedInput.MissingUnslash
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| 				$frame = isset( $_REQUEST['vp_preview_frame'] ) ? Visual_Portfolio_Security::sanitize_boolean( $_REQUEST['vp_preview_frame'] ) : false;
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| 			}
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| 		}
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| 
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| 		$this->preview_enabled = $frame;
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| 	}
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| 
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| 	/**
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| 	 * Prevent 404 headers if it is vp_preview page.
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| 	 *
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| 	 * @param bool $val - handle 404 headers.
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| 	 *
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| 	 * @return bool
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| 	 */
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| 	public function pre_handle_404( $val ) {
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| 		return $this->preview_enabled ? true : $val;
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| 	}
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| 
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| 	/**
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| 	 * Disable infinite loading in preview.
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| 	 *
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| 	 * @param array $options - options.
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| 	 *
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| 	 * @return array
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| 	 */
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| 	public function filter_preview_option( $options ) {
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| 		if ( $this->preview_enabled && isset( $options['pagination'] ) && 'infinite' === $options['pagination'] ) {
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| 			$options['pagination'] = 'load-more';
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| 		}
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| 
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| 		return $options;
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| 	}
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| 
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| 	/**
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| 	 * Display preview frame
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| 	 * Available by requesting:
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| 	 * SITE/?vp_preview=vp_preview with POST data: `vp_preview_frame=true&vp_preview_frame_id=10`
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| 	 */
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| 	public function template_redirect() {
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| 		if ( is_admin() || ! $this->preview_enabled ) {
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| 			return;
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| 		}
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| 
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| 		$this->print_template();
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| 		exit;
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| 	}
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| 
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| 	/**
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| 	 * Enqueue scripts action.
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| 	 */
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| 	public function wp_enqueue_scripts() {
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| 		// Dequeue WooCommerce Geolocation script, since it reloads our preview iframe.
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| 		// Thanks to https://wordpress.org/support/topic/in-editor-the-normal-preview-replaced-with-a-smaller-website-load/ .
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| 		if ( $this->preview_enabled && wp_script_is( 'wc-geolocation', 'enqueued' ) ) {
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| 			wp_dequeue_script( 'wc-geolocation' );
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| 		}
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| 	}
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| 
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| 	/**
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| 	 * Do not cache.
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| 	 *
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| 	 * Tell WordPress cache plugins not to cache this request.
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| 	 */
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| 	public function do_not_cache() {
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| 		// Disable cache plugins.
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| 		if ( ! defined( 'DONOTCACHEPAGE' ) ) {
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|             // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound
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| 			define( 'DONOTCACHEPAGE', true );
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| 		}
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| 
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| 		if ( ! defined( 'DONOTCACHEDB' ) ) {
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|             // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound
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| 			define( 'DONOTCACHEDB', true );
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| 		}
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| 
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| 		if ( ! defined( 'DONOTMINIFY' ) ) {
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|             // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound
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| 			define( 'DONOTMINIFY', true );
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| 		}
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| 
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| 		if ( ! defined( 'DONOTCDN' ) ) {
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|             // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound
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| 			define( 'DONOTCDN', true );
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| 		}
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| 
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| 		if ( ! defined( 'DONOTCACHEOBJECT' ) ) {
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|             // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound
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| 			define( 'DONOTCACHEOBJECT', true );
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| 		}
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| 
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| 		// Set the headers to prevent caching for the different browsers.
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| 		nocache_headers();
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| 	}
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| 
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| 	/**
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| 	 * Template of preview page.
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| 	 */
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| 	public function print_template() {
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| 		do_action( 'vpf_preview_template' );
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| 
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| 		// Tell to WP Cache plugins do not cache this request.
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| 		$this->do_not_cache();
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| 
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| 		// Don't redirect to permalink.
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| 		remove_action( 'template_redirect', 'redirect_canonical' );
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| 
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| 		// Compatibility with Yoast SEO plugin when 'Removes unneeded query variables from the URL' enabled.
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| 		if ( class_exists( 'WPSEO_Frontend' ) ) {
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| 			remove_action( 'template_redirect', array( \WPSEO_Frontend::get_instance(), 'clean_permalink' ), 1 );
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| 		}
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| 
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| 		// Disable the WP admin bar.
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| 		add_filter( 'show_admin_bar', '__return_false' );
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| 
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| 		// Avoid Cloudflare's Rocket Loader lazy load the editor iframe.
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| 		// TODO: we also need an additional filter, which is not available in the WP yet:
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| 		// https://github.com/WordPress/wordpress-develop/pull/1759 .
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| 		add_filter( 'script_loader_tag', array( $this, 'rocket_loader_filter' ) );
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| 
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| 		// Enqueue assets.
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| 		Visual_Portfolio_Assets::enqueue_script( 'iframe-resizer-content', 'assets/vendor/iframe-resizer/js/iframeResizer.contentWindow.min', array(), '4.3.7' );
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| 		Visual_Portfolio_Assets::enqueue_script( 'visual-portfolio-preview', 'build/assets/js/preview', array( 'iframe-resizer-content' ) );
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| 		// Post data for script.
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| 		wp_localize_script(
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| 			'visual-portfolio-preview',
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| 			'vp_preview_post_data',
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|             // phpcs:disable WordPress.Security.NonceVerification.Missing
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| 			isset( $_POST ) && ! empty( $_POST ) ? Visual_Portfolio_Security::sanitize_attributes( $_POST ) : array()
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| 		);
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| 
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| 		$class_name = 'vp-preview-wrapper';
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| 
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| 		// preview type.
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| 		$type = isset( $_POST['vp_preview_type'] ) ? sanitize_text_field( wp_unslash( $_POST['vp_preview_type'] ) ) : false;
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| 
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| 		if ( $type ) {
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| 			$class_name .= ' vp-preview-type-' . $type;
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| 		}
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| 
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| 		// Prepare portfolio post options.
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| 		$options = array();
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| 		if ( isset( $_POST ) && ! empty( $_POST ) ) {
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| 			foreach ( $_POST as $name => $val ) {
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| 				if ( strpos( $name, 'vp_' ) === 0 ) {
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| 					$options[ preg_replace( '/^vp_/', '', $name ) ] = $val;
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| 				}
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| 			}
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| 		}
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| 
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| 		// Elementor widget preview.
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|         // phpcs:disable WordPress.Security.NonceVerification.Recommended
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| 		if ( isset( $_REQUEST['vp_preview_type'] ) && 'elementor' === $_REQUEST['vp_preview_type'] && isset( $_REQUEST['vp_preview_frame_id'] ) ) {
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| 			$options['id'] = sanitize_text_field( wp_unslash( $_REQUEST['vp_preview_frame_id'] ) );
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| 		}
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|         // phpcs:enable WordPress.Security.NonceVerification.Missing, WordPress.Security.NonceVerification.Recommended
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| 
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| 		$options = Visual_Portfolio_Security::sanitize_attributes( $options );
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| 
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| 		// Register assets.
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| 		Visual_Portfolio_Assets::enqueue( $options );
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| 
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| 		// Custom styles.
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| 		visual_portfolio()->include_template_style( 'visual-portfolio-preview', 'preview/style', array(), VISUAL_PORTFOLIO_VERSION );
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| 
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| 		// Output template.
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| 		visual_portfolio()->include_template(
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| 			'preview/preview',
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| 			array(
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| 				'options'    => $options,
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| 				'class_name' => $class_name,
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| 			)
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| 		);
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| 	}
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| 
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| 	/**
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| 	 * Disable rocket loader in preview.
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| 	 *
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| 	 * @param String $tag - tag string.
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| 	 *
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| 	 * @return String
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| 	 */
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| 	public function rocket_loader_filter( $tag ) {
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| 		return str_replace( '<script', '<script data-cfasync="false"', $tag );
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| 	}
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| }
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| 
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| new Visual_Portfolio_Preview();
 |