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

code from pantheon

* code from pantheon

wp/wp-content/plugins/divi-builder/theme-compat/class-et-builder-theme-compat-astra.php

@@ -0,0 +1,112 @@
+<?php
+/**
+ * ET_Builder_Theme_Compat_Astra class file.
+ *
+ * @class   ET_Builder_Theme_Compat_Astra
+ * @package Divi Builder
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Theme Compatibility for Astra theme.
+ *
+ * @see https://wordpress.org/themes/astra/
+ *
+ * @since ??
+ */
+class ET_Builder_Theme_Compat_Astra {
+	/**
+	 * Unique instance of class.
+	 *
+	 * @since ??
+	 *
+	 * @var ET_Builder_Theme_Compat_Astra
+	 */
+	public static $instance;
+
+	/**
+	 * Constructor.
+	 *
+	 * @since ??
+	 */
+	private function __construct() {
+		$this->init_hooks();
+	}
+
+	/**
+	 * Gets the instance of the class.
+	 *
+	 * @since ??
+	 */
+	public static function init() {
+		if ( null === self::$instance ) {
+			self::$instance = new self();
+		}
+
+		return self::$instance;
+	}
+
+	/**
+	 * Hook methods to WordPress.
+	 *
+	 * @since ??
+	 */
+	public function init_hooks() {
+		$theme   = wp_get_theme();
+		$version = isset( $theme['Version'] ) ? $theme['Version'] : false;
+
+		// Bail if no theme version found.
+		if ( ! $version ) {
+			return;
+		}
+
+		// Fix missing theme page container when TB is enabled.
+		add_action( 'et_theme_builder_template_after_header', array( $this, 'theme_builder_after_header' ) );
+		add_action( 'et_theme_builder_template_before_footer', array( $this, 'theme_builder_before_footer' ) );
+	}
+
+	/**
+	 * Display theme opening container.
+	 *
+	 * Provide the opening container tag only to ensure TB layout works smoothly.
+	 *
+	 * @since ??
+	 */
+	public function theme_builder_after_header() {
+		// Method `astra_attr()` generates HTML attributes and already runs escaping process
+		// on each of the attribute values.
+		// @see {Astra_Attr::astra_attr()}.
+		$page_container_attrs = astra_attr(
+			'site',
+			array(
+				'id'    => 'page',
+				'class' => 'hfeed site',
+			)
+		);
+		?>
+		<div <?php echo et_core_esc_previously( $page_container_attrs ); ?>>
+			<div id="content" class="site-content">
+				<div class="ast-container">
+		<?php
+	}
+
+	/**
+	 * Display theme closing container.
+	 *
+	 * Provide the closing container tag only to ensure TB layout works smoothly.
+	 *
+	 * @since ??
+	 */
+	public function theme_builder_before_footer() {
+		?>
+				</div>
+			</div><!-- #content -->
+		</div><!-- #page -->
+		<?php
+	}
+}
+
+ET_Builder_Theme_Compat_Astra::init();