Minimal level of compatibility provided with old Image class. Once an Image is...

Minimal level of compatibility provided with old Image class. Once an Image is viewed, it is upgraded.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@11826 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Image.py

@@ -30,6 +30,7 @@
 ##############################################################################
 
 from AccessControl import ClassSecurityInfo
+from Acquisition import aq_base
 
 from Products.CMFCore.WorkflowCore import WorkflowMethod
 from Products.ERP5Type import Permissions, PropertySheet, Constraint, Interface
@@ -251,6 +252,16 @@ class Image(File, OFSImage, ConversionCacheMixin):
   def index_html(self, REQUEST, RESPONSE, display=None, format='', quality=75, resolution=None):
       """Return the image data."""
 
+      # Quick hack to maintain just enough compatibility for existing sites
+      # Convert to new BTreeFolder2 based class
+      if getattr(aq_base(self), '_count', None) is None:
+        self._initBTrees()
+      # Make sure old Image objects can still be accessed
+      if not hasattr(aq_base(self), 'data') and hasattr(self, '_original'):
+        self.data = self._original.data
+        self.height = self._original.height
+        self.width = self._original.width
+
       # display may be set from a cookie (?)
       if (display is not None or resolution is not None or quality != 75) and defaultdisplays.has_key(display):
           if not self.hasConversion(display=display, format=format,