--- MPIWGWeb/Attic/MPIWGHelper.py	2008/10/23 07:53:50	1.1.2.7
+++ MPIWGWeb/Attic/MPIWGHelper.py	2010/02/10 18:25:44	1.1.2.10
@@ -84,30 +84,81 @@ def sortI(x,y):
         return cmp(x[1],y[1])
 
 
-def unicodify(str):
+def unicodify(s):
     """decode str (utf-8 or latin-1 representation) into unicode object"""
     #logging.error("unicodify: %s"%str)
-    if not str:
-        return ""
-    if type(str) is StringType:
+    if not s:
+        return u""
+    if isinstance(s, str):
         try:
-            return str.decode('utf-8')
+            return s.decode('utf-8')
         except:
-            return str.decode('latin-1')
+            return s.decode('latin-1')
     else:
-        return str
+        return s
 
-def utf8ify(str):
+def utf8ify(s):
     """encode unicode object or string into byte string in utf-8 representation"""
-    if not str:
+    if not s:
         return ""
-    if type(str) is StringType:
-        return str
+    if isinstance(s, str):
+        return s
     else:
-        return str.encode('utf-8')
+        return s.encode('utf-8')
 
 
 def shortenString(s, l, ellipsis='...'):
     """returns a string of length l (or l-1) by omitting characters in the middle of s, replacing with ellipsis."""
     l1 = int((l - len(ellipsis)) / 2)
     return "%s%s%s"%(s[:l1],ellipsis,s[-l1:])
+
+
+#
+# navigation methods (should better be a mixin class)
+#
+def getBreadcrumbs(self):
+    """return list of breadcrumbs from here to the root"""
+    crumbs = [(self.title, self.absolute_url(), self)]
+    parent = self.aq_parent
+    if hasattr(parent, 'getBreadcrumbs'):
+        if self.title:
+            return parent.getBreadcrumbs() + crumbs
+        else:
+            # if there's no title, skip this level
+            return parent.getBreadcrumbs()
+        
+    return crumbs
+
+
+def getSection(self, crumbs=None):
+    """returns the current section name"""
+    # use breadcrumbs if available
+    if crumbs is not None and len(crumbs) > 0:
+        return crumbs[0][2].getId()
+
+    p = self
+    sec = None
+    # descend parents to the root (and remember the last id)
+    while p is not None and p.meta_type != 'MPIWGRoot':
+        sec = p.getId()
+        p = p.aq_parent
+    
+    return sec
+
+def getSubSection(self, crumbs=None):
+    """returns the current subsection name"""
+    # use breadcrumbs if available
+    if crumbs is not None and len(crumbs) > 1:
+        return crumbs[1][2].getId()
+
+    p = self
+    sec = None
+    subsec = None
+    # descend parents to the root (and remember the last id)
+    while p is not None and p.meta_type != 'MPIWGRoot':
+        subsec = sec
+        sec = p.getId()
+        p = p.aq_parent
+    
+    return subsec
+