From 7683c0d020b88e3ff338810034349f455c67a9f8 Mon Sep 17 00:00:00 2001
From: Erik Stein <erik@classlibrary.net>
Date: Fri, 24 Aug 2018 10:07:35 +0200
Subject: [PATCH] prepared_richtext / get_prepared_richtext API for
 RichTextPlugins.

---
 content_plugins/base.py | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/content_plugins/base.py b/content_plugins/base.py
index 5b870a2..0a9f31b 100644
--- a/content_plugins/base.py
+++ b/content_plugins/base.py
@@ -141,6 +141,13 @@ class RichTextBase(StyleMixin, FilesystemTemplateRendererPlugin):
     def __str__(self):
         return Truncator(strip_tags(self.richtext)).words(10, truncate=" ...")
 
+    @property
+    def prepared_richtext(self):
+        return mark_safe(self.get_prepared_richtext(self.richtext))
+
+    def get_prepared_richtext(self, richtext):
+        return richtext
+
 
 # TODO Rename to SectionBreakBase
 class SectionBase(StyleMixin, FilesystemTemplateRendererPlugin):
@@ -262,9 +269,10 @@ class FootnoteBase(StringRendererPlugin):
 class RichTextFootnoteMixin:
     MATCH_FOOTNOTES = re.compile("<sup>(\w+)</sup>")
 
-    def render(self):
+    def get_prepared_richtext(self, richtext):
         # Find all footnotes and convert them into links
+        richtext = super().get_prepared_richtext(richtext)
         rv = self.MATCH_FOOTNOTES.subn(
             '<sup id=\"back\g<1>\" class="footnote"><a href=\"#fn\g<1>\">\g<1></a></sup>',
-            self.richtext)[0]
-        return mark_safe(rv)
+            richtext)[0]
+        return rv