Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/divi-builder/theme-compat.php

@@ -0,0 +1,178 @@
+<?php
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly
+}
+
+/**
+ * Some themes are conflicting with Divi Builder beyond generalized solution
+ * Load theme-based compatibility fix until theme author makes it compatible with Divi Builder
+ * @since 1.0
+ */
+class ET_Builder_Theme_Compat_Loader {
+	/**
+	 * Unique instance of class
+	 */
+	public static $instance;
+
+	/**
+	 * Constructor
+	 */
+	private function __construct() {
+		$this->init_hooks();
+	}
+
+	/**
+	 * Gets the instance of the class
+	 */
+	public static function init() {
+		if ( null === self::$instance ){
+			self::$instance = new self();
+		}
+
+		return self::$instance;
+	}
+
+	/**
+	 * Hooking methods into WordPress actions and filters
+	 * @return void
+	 */
+	private function init_hooks() {
+		// load after $post is initiated. Cannot load before `init` hook
+		if ( is_admin() ) {
+			$priority = defined( 'DOING_AJAX' ) && DOING_AJAX ? 10 : 1000;
+
+			// Adding script for UX enhancement in dashboard needs earlier hook registration
+			add_action( 'wp_loaded', array( $this, 'load_theme_compat' ), $priority );
+		} else {
+			// Add after $post object has been set up so it can only load theme compat on page
+			// which uses Divi Builder only
+			add_action( 'wp', array( $this, 'load_theme_compat' ) );
+
+			// Load compatibility scripts
+			add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ), 15 );
+		}
+	}
+
+	/**
+	 * Get theme data
+	 * @param string data name
+	 * @return string|bool
+	 */
+	function get_theme( $name ) {
+		$theme = wp_get_theme();
+
+		return $theme->get( $name );
+	}
+
+	/**
+	 * List of themes with available compatibility
+	 * @return array
+	 */
+	function theme_list() {
+		return apply_filters( 'et_builder_theme_compat_loader_list', array(
+			'Make',
+			'Virtue',
+			'evolve',
+			'raindrops',
+			'Weblizar',
+			'Zerif Lite',
+			'Flatsome',
+			'Enfold',
+			'Avada',
+			'X',
+			'SmartMag',
+			'Betheme',
+			'The7',
+			'Salient',
+			'Foxy',
+			'Bridge',
+			'Jupiter',
+			'Impreza',
+			'Twenty Sixteen',
+			'Twenty Seventeen',
+			'Twenty Nineteen',
+			'Twenty Twenty',
+			'JupiterX',
+			'Portfolio Press',
+			'Astra',
+			'Iconic One',
+		) );
+	}
+
+	/**
+	 * Check whether current page should load theme compatibility file or not
+	 * @return bool
+	 */
+	function has_theme_compat() {
+		global $wp_query;
+
+		// On non-singular page, get_the_ID() returns post ID of the first post in the main loop
+		// Thus explicitly set as null if current page isn't singular to avoid inaccurate check
+		$post_id = is_singular() ? get_the_ID() : null;
+
+		// in dashboard, layout block preview,  and preview, always load theme-compat file
+		$load_compat_file     = is_admin() || is_et_pb_preview() || has_block( 'divi/layout', $post_id );
+		$is_using_pagebuilder = $load_compat_file  ? true : isset( $post_id ) && et_pb_is_pagebuilder_used( $post_id );
+
+		// Check if current page is not singular but one of its main loop's post use builder
+		$not_singular_posts_has_builder = ! $is_using_pagebuilder && ! is_singular() && et_dbp_is_query_has_builder( $wp_query );
+
+		// Check if TB overrides header and footer layout.
+		$is_tb_override_header  = et_theme_builder_overrides_layout( ET_THEME_BUILDER_HEADER_LAYOUT_POST_TYPE );
+		$is_tb_override_footer  = et_theme_builder_overrides_layout( ET_THEME_BUILDER_FOOTER_LAYOUT_POST_TYPE );
+		$is_tb_overrides_layout = $is_tb_override_header || $is_tb_override_footer;
+
+		// Check whether: 1) current page uses builder or current page is not singular but  one of
+		// its post use builder 2) current theme has compatibility file
+		if ( ( $is_using_pagebuilder || $not_singular_posts_has_builder || $is_tb_overrides_layout ) && in_array( $this->get_theme( 'Name' ), $this->theme_list(), true ) ) {
+			return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * Load theme compatibility file, if there's any
+	 *
+	 * @since ?? Handle theme compatibility file that starts with `class-` prefix.
+	 *
+	 * @return void
+	 */
+	function load_theme_compat() {
+		if ( $this->has_theme_compat() ) {
+			// Get theme-compat file at /theme-compat/ directory
+			$theme_compat_path = ET_BUILDER_PLUGIN_DIR . 'theme-compat/' . sanitize_title( $this->get_theme( 'Name' ) ) . '.php';
+
+			// Match theme compatibility file that starts with `class-` prefix.
+			if ( ! file_exists( $theme_compat_path ) ) {
+				$theme_compat_path = ET_BUILDER_PLUGIN_DIR . 'theme-compat/class-et-builder-theme-compat-' . sanitize_title( $this->get_theme( 'Name' ) ) . '.php';
+			}
+
+			require_once apply_filters( 'et_builder_theme_compat_loader_list_path', $theme_compat_path, $this->get_theme( 'Name' ) );
+		}
+	}
+
+	/**
+	 * Load compatibility style & scripts
+	 * @return void
+	 */
+	function enqueue_scripts() {
+		// Add Elegant Shortcode Support
+		$shortcode_file_path = get_template_directory() . '/epanel/shortcodes/shortcodes.php';
+
+		if ( 'Elegant Themes' === $this->get_theme( 'Author' ) && file_exists( $shortcode_file_path ) ) {
+			// Dequeue standard Elegant Shortcode styling
+			wp_dequeue_style( 'et-shortcodes-css' );
+
+			// Enqueue modified (more-specific) Elegant Shortcode styling
+			wp_enqueue_style(
+				'et-builder-compat-elegant-shortcodes',
+				ET_BUILDER_PLUGIN_URI . '/theme-compat/css/elegant-shortcodes.css',
+				array( 'et-builder-modules-style' ),
+				ET_BUILDER_PLUGIN_VERSION
+			);
+		}
+	}
+}
+
+ET_Builder_Theme_Compat_Loader::init();