From 1c71a27225f1c3f4968aa724398a51cef1216caf Mon Sep 17 00:00:00 2001
From: Franco Pellegrini <frapell@gmail.com>
Date: Fri, 15 Apr 2022 18:17:35 -0300
Subject: [PATCH] Do not apply the theme transform over every request. Closes
 gh-207

---
 news/207.misc                      | 2 ++
 src/plone/app/theming/transform.py | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 news/207.misc

diff --git a/news/207.misc b/news/207.misc
new file mode 100644
index 00000000..7ad97f65
--- /dev/null
+++ b/news/207.misc
@@ -0,0 +1,2 @@
+Do not apply the theme transform over every request
+[frapell]
diff --git a/src/plone/app/theming/transform.py b/src/plone/app/theming/transform.py
index 9a09dd42..13b5b1b9 100644
--- a/src/plone/app/theming/transform.py
+++ b/src/plone/app/theming/transform.py
@@ -14,6 +14,7 @@
 from zope.component import adapter
 from zope.interface import implementer
 from zope.interface import Interface
+from zope.location.interfaces import ILocation
 
 import logging
 
@@ -25,7 +26,7 @@
 
 
 @implementer(ITransform)
-@adapter(Interface, IThemingLayer)
+@adapter(ILocation, IThemingLayer)
 class ThemeTransform(object):
     """Late stage in the 8000's transform chain. When plone.app.blocks is
     used, we can benefit from lxml parsing having taken place already.