Merged in feature/MAW-855-import-code-into-aws (pull request #2)

code import from pantheon

* code import from pantheon

wp/wp-content/plugins/wordpress-seo-premium/src/initializers/introductions-initializer.php

@@ -0,0 +1,96 @@
+<?php
+
+namespace Yoast\WP\SEO\Premium\Initializers;
+
+use Yoast\WP\SEO\Conditionals\Admin\Yoast_Admin_Conditional;
+use Yoast\WP\SEO\Helpers\Current_Page_Helper;
+use Yoast\WP\SEO\Initializers\Initializer_Interface;
+use Yoast\WP\SEO\Introductions\Application\Current_Page_Trait;
+use Yoast\WP\SEO\Introductions\Domain\Introduction_Interface;
+
+/**
+ * Initializes Premium introductions.
+ */
+class Introductions_Initializer implements Initializer_Interface {
+	const SCRIPT_HANDLE = 'wp-seo-premium-introductions';
+
+	use Current_Page_Trait;
+
+	/**
+	 * Holds the current page helper.
+	 *
+	 * @var Current_Page_Helper
+	 */
+	private $current_page_helper;
+
+	/**
+	 * Holds the introductions.
+	 *
+	 * @var Introduction_Interface
+	 */
+	private $introductions;
+
+	/**
+	 * Constructs the new features integration.
+	 *
+	 * @param Current_Page_Helper    $current_page_helper The current page helper.
+	 * @param Introduction_Interface ...$introductions    The introductions.
+	 */
+	public function __construct( Current_Page_Helper $current_page_helper, Introduction_Interface ...$introductions ) {
+		$this->current_page_helper = $current_page_helper;
+		$this->introductions       = $introductions;
+	}
+
+	/**
+	 * Returns the conditionals based in which this loadable should be active.
+	 *
+	 * In this case: when on an admin page.
+	 */
+	public static function get_conditionals() {
+		return [ Yoast_Admin_Conditional::class ];
+	}
+
+	/**
+	 * Registers the action to enqueue the needed script(s).
+	 *
+	 * @return void
+	 */
+	public function initialize() {
+		if ( $this->is_on_installation_page() ) {
+			return;
+		}
+
+		\add_filter( 'wpseo_introductions', [ $this, 'add_introductions' ] );
+		\add_action( 'admin_enqueue_scripts', [ $this, 'enqueue_assets' ] );
+	}
+
+	/**
+	 * Adds the Premium introductions.
+	 *
+	 * @param Introduction_Interface[] $introductions The introductions.
+	 *
+	 * @return array The merged introductions.
+	 */
+	public function add_introductions( $introductions ) {
+		// Safety check and bail.
+		if ( ! \is_array( $introductions ) ) {
+			return $introductions;
+		}
+
+		return \array_merge( $introductions, $this->introductions );
+	}
+
+	/**
+	 * Enqueue the workouts app.
+	 */
+	public function enqueue_assets() {
+		\wp_enqueue_script( self::SCRIPT_HANDLE );
+		\wp_localize_script(
+			self::SCRIPT_HANDLE,
+			'wpseoPremiumIntroductions',
+			[
+				'pluginUrl' => \plugins_url( '', \WPSEO_PREMIUM_FILE ),
+			]
+		);
+	}
+}