provide Mimetype icon path for file types in contentlisting object

 plone/Products.CMFPlone#1734

CHANGES.rst

@@ -10,7 +10,8 @@ Breaking changes:
 
 New features:
 
-- *add item here*
+- provide Mimetype icon path for file types in contentlisting object
+  https://github.com/plone/Products.CMFPlone/issues/1734 [fgrcon]
 
 Bug fixes:
 

plone/app/contentlisting/contentlisting.py

@@ -1,13 +1,18 @@
 # -*- coding: utf-8 -*-
+
+from plone import api
 from plone.app.contentlisting.interfaces import IContentListing
 from plone.app.contentlisting.interfaces import IContentListingObject
 from plone.i18n.normalizer.interfaces import IIDNormalizer
 from plone.registry.interfaces import IRegistry
 from Products.CMFPlone.interfaces import INavigationSchema
+from Products.MimetypesRegistry.MimeTypeItem import guess_icon_path
 from zope.component import getUtility
 from zope.component import queryUtility
 from zope.interface import implementer
 
+import os
+
 
 @implementer(IContentListing)
 class ContentListing(object):
@@ -141,3 +146,15 @@ def isVisibleInNav(self):
             return False
 
         return True
+
+    def MimeTypeIcon(self):
+        if not self.PortalType() == 'File':
+            return None
+        portal_url = api.portal.get().absolute_url()
+        mtt = api.portal.get_tool(name='mimetypes_registry')
+        if self.getObject().file.contentType:
+            ctype = mtt.lookup(self.getObject().file.contentType)
+            return os.path.join(portal_url,
+                                guess_icon_path(ctype[0])
+                                )
+        return None

plone/app/contentlisting/interfaces.py

@@ -86,3 +86,8 @@ def ContentTypeClass():
         """The contenttype suitable as a css class name, matching Plone
         conventions.
         """
+
+    def MimeTypeIcon():
+        """ return mimetype icon from mimetype registry if contenttype is
+        File else None
+        """