<?php

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namespace Elementor;

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use Elementor\Core\Base\App;

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use Elementor\Core\Settings\Manager as SettingsManager;

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if ( ! defined( 'ABSPATH' ) ) {

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exit; // Exit if accessed directly.

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}

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/**

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* Elementor preview.

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*

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* Elementor preview handler class is responsible for initializing Elementor in

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* preview mode.

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*

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* @since 1.0.0

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*/

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class Preview extends App {

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/**

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* The priority of the preview enqueued styles.

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*/

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const ENQUEUED_STYLES_PRIORITY = 20;

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/**

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* Is Preview.

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*

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* Holds a flag if current request is a preview.

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* The flag is not related to a specific post or edit permissions.

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*

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* @since 2.9.5

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* @access private

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*

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* @var bool Is Preview.

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*/

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private $is_preview;

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/**

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* Post ID.

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*

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* Holds the ID of the current post being previewed.

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*

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* @since 1.0.0

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* @access private

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*

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* @var int Post ID.

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*/

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private $post_id;

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/**

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* Get module name.

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*

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* Retrieve the module name.

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*

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* @since 3.0.0

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* @access public

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* @abstract

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*

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* @return string Module name.

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*/

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public function get_name() {

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return 'preview';

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}

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/**

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* Init.

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*

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* Initialize Elementor preview mode.

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*

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* Fired by `template_redirect` action.

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*

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* @since 1.0.0

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* @access public

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*/

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public function init() {

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if ( is_admin() || ! $this->is_preview_mode() ) {

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return;

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}

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if ( isset( $_GET['preview-debug'] ) ) {

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register_shutdown_function( function () {

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$e = error_get_last();

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if ( $e ) {

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echo '<div id="elementor-preview-debug-error"><pre>';

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Utils::print_unescaped_internal_string( $e['message'] );

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echo '</pre></div>';

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}

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} );

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}

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$this->post_id = get_the_ID();

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$this->is_preview = true;

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// Don't redirect to permalink.

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remove_action( 'template_redirect', 'redirect_canonical' );

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// Compatibility with Yoast SEO plugin when 'Removes unneeded query variables from the URL' enabled.

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// TODO: Move this code to `includes/compatibility.php`.

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if ( class_exists( 'WPSEO_Frontend' ) ) {

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remove_action( 'template_redirect', [ \WPSEO_Frontend::get_instance(), 'clean_permalink' ], 1 );

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}

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// Disable the WP admin bar in preview mode.

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add_filter( 'show_admin_bar', '__return_false' );

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add_action( 'wp_enqueue_scripts', function() {

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$this->enqueue_styles();

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$this->enqueue_scripts();

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}, self::ENQUEUED_STYLES_PRIORITY );

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add_filter( 'the_content', [ $this, 'builder_wrapper' ], 999999 );

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add_action( 'wp_footer', [ $this, 'wp_footer' ] );

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// Avoid Cloudflare's Rocket Loader lazy load the editor iframe

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add_filter( 'script_loader_tag', [ $this, 'rocket_loader_filter' ], 10, 3 );

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// Tell to WP Cache plugins do not cache this request.

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Utils::do_not_cache();

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/**

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* Preview init.

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*

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* Fires on Elementor preview init, after Elementor preview has finished

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* loading but before any headers are sent.

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*

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* @since 1.0.0

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*

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* @param Preview $this The current preview.

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*/

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do_action( 'elementor/preview/init', $this );

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}

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/**

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* Retrieve post ID.

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*

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* Get the ID of the current post.

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*

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* @since 1.8.0

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* @access public

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*

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* @return int Post ID.

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*/

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public function get_post_id() {

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return $this->post_id;

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}

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/**

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* Is Preview.

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*

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* Whether current request is the elementor preview iframe.

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* The flag is not related to a specific post or edit permissions.

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*

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* @since 2.9.5

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* @access public

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*

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* @return bool

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*/

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public function is_preview() {

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return $this->is_preview;

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}

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/**

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* Whether preview mode is active.

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*

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* Used to determine whether we are in the preview mode (iframe).

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*

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* @since 1.0.0

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* @access public

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*

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* @param int $post_id Optional. Post ID. Default is `0`.

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*

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* @return bool Whether preview mode is active.

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*/

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public function is_preview_mode( $post_id = 0 ) {

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if ( ! isset( $_GET['elementor-preview'] ) ) {

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return false;

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}

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if ( empty( $post_id ) ) {

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$post_id = get_the_ID();

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}

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if ( ! User::is_current_user_can_edit( $post_id ) ) {

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return false;

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}

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if ( $post_id !== (int) $_GET['elementor-preview'] ) {

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return false;

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}

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return true;

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}

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/**

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* Builder wrapper.

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*

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* Used to add an empty HTML wrapper for the builder, the javascript will add

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* the content later.

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*

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* @since 1.0.0

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* @access public

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*

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* @param string $content The content of the builder.

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*

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* @return string HTML wrapper for the builder.

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*/

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public function builder_wrapper( $content ) {

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if ( get_the_ID() === $this->post_id ) {

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$document = Plugin::$instance->documents->get( $this->post_id );

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$attributes = $document->get_container_attributes();

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$content = '<div ' . Utils::render_html_attributes( $attributes ) . '></div>';

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}

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return $content;

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}

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/**

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* Enqueue preview styles.

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*

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* Registers all the preview styles and enqueues them.

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*

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* Fired by `wp_enqueue_scripts` action.

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*

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* @since 1.0.0

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* @access private

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*/

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private function enqueue_styles() {

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// Hold-on all jQuery plugins after all HTML markup render.

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wp_add_inline_script( 'jquery-migrate', 'jQuery.holdReady( true );' );

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Plugin::$instance->frontend->enqueue_styles();

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Plugin::$instance->elements_manager->enqueue_elements_styles();

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Plugin::$instance->widgets_manager->enqueue_widgets_styles();

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$suffix = Utils::is_script_debug() ? '' : '.min';

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$direction_suffix = is_rtl() ? '-rtl' : '';

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wp_register_style(

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'elementor-select2',

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ELEMENTOR_ASSETS_URL . 'lib/e-select2/css/e-select2' . $suffix . '.css',

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[],

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'4.0.6-rc.1'

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);

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wp_register_style(

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'editor-preview',

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ELEMENTOR_ASSETS_URL . 'css/editor-preview' . $direction_suffix . $suffix . '.css',

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[

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'elementor-select2',

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],

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ELEMENTOR_VERSION

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);

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wp_enqueue_style(

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'e-theme-ui-light',

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$this->get_css_assets_url( 'theme-light' ),

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[],

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ELEMENTOR_VERSION

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);

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wp_enqueue_style( 'editor-preview' );

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// Handle the 'wp audio' in editor preview.

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wp_enqueue_style( 'wp-mediaelement' );

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/**

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* Preview enqueue styles.

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*

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* Fires after Elementor preview styles are enqueued.

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*

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* @since 1.0.0

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*/

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do_action( 'elementor/preview/enqueue_styles' );

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}

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/**

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* Enqueue preview scripts.

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*

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* Registers all the preview scripts and enqueues them.

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*

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* Fired by `wp_enqueue_scripts` action.

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*

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* @since 1.5.4

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* @access private

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*/

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private function enqueue_scripts() {

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Plugin::$instance->frontend->register_scripts();

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Plugin::$instance->widgets_manager->enqueue_widgets_scripts();

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$suffix = Utils::is_script_debug() ? '' : '.min';

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wp_enqueue_script(

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'elementor-inline-editor',

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ELEMENTOR_ASSETS_URL . 'lib/inline-editor/js/inline-editor' . $suffix . '.js',

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[],

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ELEMENTOR_VERSION,

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true

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);

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// Handle the 'wp audio' in editor preview.

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wp_enqueue_script( 'wp-mediaelement' );

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/**

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* Preview enqueue scripts.

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*

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* Fires after Elementor preview scripts are enqueued.

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*

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* @since 1.5.4

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*/

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do_action( 'elementor/preview/enqueue_scripts' );

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}

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public function rocket_loader_filter( $tag, $handle, $src ) {

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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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* Elementor Preview footer scripts and styles.

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*

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* Handle styles and scripts from frontend.

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*

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* Fired by `wp_footer` action.

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*

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* @since 2.0.9

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* @access public

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*/

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public function wp_footer() {

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$frontend = Plugin::$instance->frontend;

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if ( $frontend->has_elementor_in_page() ) {

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// Has header/footer/widget-template - enqueue all style/scripts/fonts.

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$frontend->wp_footer();

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} else {

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// Enqueue only scripts.

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$frontend->enqueue_scripts();

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}

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}

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/**

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* Preview constructor.

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*

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* Initializing Elementor preview.

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*

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* @since 1.0.0

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* @access public

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*/

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public function __construct() {

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add_action( 'template_redirect', [ $this, 'init' ], 0 );

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}

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}

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