Merge pull request #417 from Automattic/playbuzz

Support for Playbuzz plugin

compat.php

@@ -7,11 +7,6 @@
  * @package default
  */
 
-if ( !function_exists( 'is_plugin_active' ) ) {
-	require_once ( ABSPATH . '/wp-admin/includes/plugin.php' );
-}
-
-
 // Load compat layer for Co-Authors Plus.
 if ( function_exists( 'get_coauthors' ) && ! defined( 'CAP_IA_COMPAT' ) ) {
 	include( dirname( __FILE__ ) . '/compat/class-instant-articles-co-authors-plus.php' );
@@ -41,8 +36,15 @@
 }
 
 // Load support for Get The Image plugin
-if ( is_plugin_active( 'get-the-image/get-the-image.php' ) ) {
+if ( function_exists( 'get_the_image' ) ) {
 	include( dirname( __FILE__ ) . '/compat/class-instant-articles-get-the-image.php' );
 	$gti = new Instant_Articles_Get_The_Image;
 	$gti->init();
 }
+
+// Load support for Playbuzz plugin
+if ( function_exists( 'playbuzz_settings_link' ) ) {
+	include( dirname( __FILE__ ) . '/compat/class-instant-articles-playbuzz.php' );
+	$playbuzz = new Instant_Articles_Playbuzz;
+	$playbuzz->init();
+}

compat/class-instant-articles-playbuzz.php

@@ -0,0 +1,27 @@
+<?php
+
+/**
+ * Support class for Playbuzz
+ *
+ * @since 3.1.1
+ *
+ */
+class Instant_Articles_Playbuzz {
+
+	/**
+	 * Init the compat layer
+	 *
+	 */
+	function init() {
+		add_filter( 'instant_articles_transformer_rules_loaded', array( 'Instant_Articles_Playbuzz', 'transformer_loaded' ) );
+	}
+
+	public static function transformer_loaded( $transformer ) {
+		// Appends more rules to transformer
+		$file_path = plugin_dir_path( __FILE__ ) . 'playbuzz-rules-configuration.json';
+		$configuration = file_get_contents( $file_path );
+		$transformer->loadRules( $configuration );
+
+		return $transformer;
+	}
+}

compat/playbuzz-rules-configuration.json

@@ -0,0 +1,23 @@
+{
+  "rules": [{
+      "class" : "IgnoreRule",
+      "selector": "//p/script[contains(@src,'playbuzz')]"
+    }, {
+      "class": "InteractiveRule",
+      "selector" : "div.pb_feed",
+      "properties" : {
+        "interactive.iframe" : {
+          "type" : "multiple",
+          "children": [{
+              "type": "fragment",
+              "fragment": "<script type='text/javascript' src='//cdn.playbuzz.com/widget/feed.js'></script>"
+            }, {
+              "type": "element",
+              "selector": "div.pb_feed"
+            }
+          ]
+        }
+      }
+    }
+  ]
+}