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<?php

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if ( ! defined( 'ABSPATH' ) ) {

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// Exit if accessed directly.

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exit;

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}

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/**

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* Compatibility for the Rank Math SEO plugin.

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* @since 4.4.2

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* @link https://wordpress.org/plugins/seo-by-rank-math/

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class ET_Builder_Plugin_Compat_Rank_Math_SEO extends ET_Builder_Plugin_Compat_Base {

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/**

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* Constructor.

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* @since 4.4.2

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public function __construct() {

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$this->plugin_id = 'seo-by-rank-math/rank-math.php';

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$this->init_hooks();

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}

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/**

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* Hook methods to WordPress.

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* @since 4.4.2

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* @return void

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public function init_hooks() {

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// Bail if there's no version found.

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if ( ! $this->get_plugin_version() ) {

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return;

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}

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add_filter( 'rank_math/sitemap/urlimages', array( $this, 'get_module_images' ), 10, 2 );

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}

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/**

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* Add Divi builder module's images to Rank Math sitemap.

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* @since 4.4.2

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* @param array $images Existing images.

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* @param int $post_id

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* @return array

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public function get_module_images( $images, $post_id ) {

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$post = get_post( absint( $post_id ) );

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if ( ! $post ) {

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return $images;

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}

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// All Divi modules with image. And the image is generated into img tag, not

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// as background or overlay. Mostly, those modules have alt field setting.

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$modules_with_image = array(

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'et_pb_image' => true,

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'et_pb_fullwidth_image' => true,

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'et_pb_blurb' => array(

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'src' => 'image',

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'et_pb_team_member' => array(

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'src' => 'image_url',

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'et_pb_menu' => array(

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'src' => 'logo',

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'et_pb_fullwidth_menu' => array(

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'src' => 'logo',

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'et_pb_slide' => array(

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'src' => 'image',

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'et_pb_fullwidth_header' => array(

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'logo' => array(

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'src' => 'logo_image_url',

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'title' => 'logo_title',

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'alt' => 'logo_alt_text',

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'header' => array(

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'src' => 'header_image_url',

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'title' => 'image_title',

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'alt' => 'image_alt_text',

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);

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foreach ( $modules_with_image as $module_name => $module_attrs ) {

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// Find all modules shortcodes with image from the content.

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$modules = $this->_get_module_shortcode( $post->post_content, $module_name );

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if ( empty( $modules ) ) {

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continue;

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}

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foreach ( $modules as $module ) {

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// Don't add if the image and its attributes empty.

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$new_images = $this->_get_image_attrs( $module, $module_attrs );

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if ( ! empty( $new_images ) ) {

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$images = array_merge( $images, $new_images );

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}

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}

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}

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// Gallery modules is different with the other modules with image because

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// the images are saved as ID. So, we need to fetch the IDs first then loop

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// through the IDs to get source, title text, and alt text.

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$galleries = $this->_get_module_shortcode( $post->post_content, 'et_pb_gallery' );

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if ( ! empty( $galleries ) ) {

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foreach ( $galleries as $gallery ) {

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// Find gallery ids, if it doesn't exist, skip the process.

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$gallery_ids = $this->_get_image_attr( $gallery, 'gallery_ids' );

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$gallery_ids = explode( ',', $gallery_ids );

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if ( empty( $gallery_ids ) ) {

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continue;

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}

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foreach ( $gallery_ids as $gallery_id ) {

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$image_attrs = array();

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// Find image source, if it doesn't exist, skip the process.

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$src_values = wp_get_attachment_image_src( $gallery_id, 'full' );

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$src_value = et_()->array_get( $src_values, '0' );

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if ( empty( $src_value ) ) {

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continue;

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}

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$image_attrs['src'] = esc_url( $src_value );

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// Find image title text. In our Gallery module, alt text uses the

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// same title text from the attachment. Keep it here for consistency.

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$title_value = get_the_title( $gallery_id );

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if ( ! empty( $title_value ) ) {

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$image_attrs['title'] = esc_attr( $title_value );

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$image_attrs['alt'] = esc_attr( $title_value );

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}

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$images[] = $image_attrs;

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}

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}

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}

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return $images;

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}

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/**

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* Get module shortcode from post content.

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* @since 4.4.2

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* @param string $content

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* @param string $module

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* @return string

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private function _get_module_shortcode( $content, $module ) {

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preg_match_all( '/\[' . $module . '[^]]*]/', $content, $module_values );

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return et_()->array_get( $module_values, '0' );

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}

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/**

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* Get image attributes value and collect them as an array. Attributes list:

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* source URL, title text, and alternative text.

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* @since 4.4.2

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* @param string $module

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* @param array $module_attrs

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* @return array

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private function _get_image_attrs( $module, $module_attrs ) {

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$images = array();

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$types = true !== $module_attrs && ! isset( $module_attrs['src'] ) ? $module_attrs : array( $module_attrs );

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foreach ( $types as $type_attrs ) {

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$image_attrs = array();

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// Find image source, if it doesn't exist, skip the process.

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$src_attr = et_()->array_get( $type_attrs, 'src', 'src' );

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$src_value = $this->_get_image_attr( $module, $src_attr );

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if ( empty( $src_value ) ) {

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continue;

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}

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$image_attrs['src'] = esc_url( $src_value );

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$title_attr = et_()->array_get( $type_attrs, 'title', 'title_text' );

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$title_value = $this->_get_image_attr( $module, $title_attr );

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if ( ! empty( $title_value ) ) {

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$image_attrs['title'] = esc_attr( $title_value );

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}

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$alt_attr = et_()->array_get( $type_attrs, 'alt', 'alt' );

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$alt_value = $this->_get_image_attr( $module, $alt_attr );

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if ( ! empty( $alt_value ) ) {

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$image_attrs['alt'] = esc_attr( $alt_value );

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}

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$images[] = $image_attrs;

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}

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return $images;

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}

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/**

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* Get image attribute value from the module shortcode.

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* @since 4.4.2

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* @param string $content

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* @param string $attr

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* @return string

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private function _get_image_attr( $content, $attr ) {

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preg_match( '/' . $attr . '="([^"]*)"/', $content, $attr_values );

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return et_()->array_get( $attr_values, '1' );

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}

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}

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new ET_Builder_Plugin_Compat_Rank_Math_SEO;

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