core (xml_tools): fixed findAll

- names and namespases arguments haven been inverted to be in the same order as for domish.Element.elements
    - fixed bad copy of elements in recursions
    - check if childrens are IElements
    - namespaces and names can now be basestrings instead of iterables

src/tools/xml_tools.py

@@ -1405,19 +1405,25 @@ def getText(node):
             data.append(child.wholeText)
     return u"".join(data)
 
-def findAll(elt, names=None, namespaces=None):
+def findAll(elt, namespaces=None, names=None, ):
     """Find child element at any depth matching criteria
 
     @param elt(domish.Element): top parent of the elements to find
-    @param names(iterable, None): names to match
+    @param names(iterable[unicode], basestring, None): names to match
         None to accept every names
-    @param namespace(unicode): URIs to match
+    @param namespace(iterable[unicode], basestring, None): URIs to match
         None to accept every namespaces
+    @return ((G)domish.Element): found elements
     """
+    if isinstance(namespaces, basestring):
+        namespaces=tuple((namespaces,))
+    if isinstance(names, basestring):
+        names=tuple((names,))
 
     for child in elt.elements():
-        if ((not names or child.name in names) and
+        if (domish.IElement.providedBy(child) and
+            (not names or child.name in names) and
             (not namespaces or child.uri in namespaces)):
             yield child
-        for found in findAll(child, names):
+        for found in findAll(child, namespaces, names):
             yield found