From c7a57d2391727696f25a4254cddf2caf23e30251 Mon Sep 17 00:00:00 2001
From: Weston Ruter <weston@xwp.co>
Date: Thu, 26 May 2016 16:45:07 -0700
Subject: [PATCH] Let post_name changes skip doing any partial refreshing by
 default

---
 js/customize-preview-posts.js            | 21 ++++++++++++++++++---
 php/class-wp-customize-posts-preview.php |  3 +++
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/js/customize-preview-posts.js b/js/customize-preview-posts.js
index d387eb1..98f3d63 100644
--- a/js/customize-preview-posts.js
+++ b/js/customize-preview-posts.js
@@ -64,9 +64,24 @@
 						}
 					} else {
 						partial = new api.previewPosts.PostFieldPartial( schema.id, { params: schema.params } );
-						partial.renderContent = function() {
-							api.selectiveRefresh.requestFullRefresh();
-							return true;
+
+						/**
+						 * Suppress wasted partial refreshes for partials that lack selectors.
+						 *
+						 * For example, since the post_name field is not normally
+						 * displayed, suppress refreshing changes.
+						 *
+						 * @returns {jQuery.promise} Promise.
+						 */
+						partial.refresh = function refreshWithoutSelector() {
+							var deferred = $.Deferred();
+							if ( this.params.fallbackRefresh ) {
+								api.selectiveRefresh.requestFullRefresh();
+								deferred.resolve();
+							} else {
+								deferred.reject();
+							}
+							return deferred.promise();
 						};
 						api.selectiveRefresh.partial.add( partial.id, partial );
 					}
diff --git a/php/class-wp-customize-posts-preview.php b/php/class-wp-customize-posts-preview.php
index bc1f1d1..99b9b45 100644
--- a/php/class-wp-customize-posts-preview.php
+++ b/php/class-wp-customize-posts-preview.php
@@ -521,6 +521,9 @@ public function get_post_field_partial_schema( $field_id = '' ) {
 			'post_title' => array(
 				'selector' => '.entry-title',
 			),
+			'post_name' => array(
+				'fallback_refresh' => false,
+			),
 			'post_content' => array(
 				'selector' => '.entry-content',
 			),