cutoff attempts to comment through wp-comments-post.php if Comments B…

…ox enabled for the post type of the comment post ID

facebook.php

@@ -99,6 +99,7 @@ public function __construct() {
 			$this->admin_init();
 		} else {
 			add_action( 'wp_enqueue_scripts', array( &$this, 'register_js_sdk' ), 1 );
+			add_action( 'init', array( &$this, 'public_early_init' ), 1, 0 );
 			add_action( 'wp', array( &$this, 'public_init' ) );
 		}
 	}
@@ -265,6 +266,22 @@ public function get_php_sdk() {
 		) );
 	}
 
+	/**
+	 * Add overrides early in the WordPress loading process for front-end views
+	 *
+	 * @since 1.3.1
+	 */
+	public function public_early_init() {
+		// add possible comments submission override if Comments Box enabled for one or more post types
+		if ( get_option( 'facebook_comments_enabled' ) ) {
+			if ( ! class_exists( 'Facebook_Comments' ) )
+				require_once( $this->plugin_directory . 'social-plugins/class-facebook-comments.php' );
+
+			// cutoff new comment attempts for post types under management by Comments Box
+			add_action( 'pre_comment_on_post', array( 'Facebook_Comments', 'pre_comment_on_post' ), 1, 1 );
+		}
+	}
+
 	/**
 	 * Intialize the public, front end views
 	 *
@@ -289,9 +306,10 @@ public function public_init() {
 			if ( ! class_exists( 'Facebook_Comments' ) )
 				require_once( $this->plugin_directory . 'social-plugins/class-facebook-comments.php' );
 
+			// treat as if comments are open for post types with comments under management by Comments Box
 			add_filter( 'comments_open', array( 'Facebook_Comments', 'comments_open_filter' ), 10, 2 );
 
-			// display comments number if used in template
+			// display comments number XFBML for JS SDK interpretation if used in template
 			add_filter( 'comments_number', array( 'Facebook_Comments', 'comments_number_filter' ), 10, 2 );
 		}
 

social-plugins/class-facebook-comments.php

@@ -63,6 +63,23 @@ public static function comments_open_filter( $open, $post_id = null ) {
 		return $open;
 	}
 
+	/**
+	 * Kill attempts to comment on a post managed by Facebook Comments Box
+	 *
+	 * @since 1.3.1
+	 * @param int post_id post identifer
+	 */
+	public static function pre_comment_on_post( $post_id ) {
+		if ( ! $post_id )
+			return;
+		$_post = get_post( $post_id );
+		if ( $_post && self::comments_enabled_for_post_type( $_post ) ) {
+			// match comments closed message and behavior
+			do_action( 'comment_closed', $post_id );
+			wp_die( __('Sorry, comments are closed for this item.') );
+		}
+	}
+
 	/**
 	 * Overrides text displayed with comments number, inserting Facebook XFBML to be replaced by a number with the Facebook JavaScript SDK
 	 *