# HG changeset patch
# User paulb
# Date 1126305183 0
# Node ID 1ba085b21c83c07a0f55d1f0f69cf1efcd6e81fb
# Parent  2a86409f1b77f4e9bfba59fe326046ca39f5fb1b
[project @ 2005-09-09 22:33:03 by paulb]
Renamed the get_element_path function to element_path and made it an
extension function "element-path". This makes the definition of in-page
updates slightly more convenient.

diff -r 2a86409f1b77 -r 1ba085b21c83 XSLForms/Output.py
--- a/XSLForms/Output.py	Fri Sep 09 21:02:59 2005 +0000
+++ b/XSLForms/Output.py	Fri Sep 09 22:33:03 2005 +0000
@@ -312,6 +312,34 @@
     output = "".join(l)
     return output
 
+def element_path(context, field_names):
+
+    """
+    Convert the given 'field_names' back to XPath references.
+    For example:
+    /configuration$1/details$1/base-system$$value -> /*[position() = 1]/*[position() = 1]/base-system
+    If more than one field name is given - ie. 'field_names' contains a
+    comma-separated list of names - then only the first name is used.
+    """
+
+    field_name = field_names.split(",")[0]
+
+    # Get the main part of the name (where a multivalue reference was given).
+
+    field_name = get_field_name(field_name)
+
+    # Build the XPath expression.
+
+    parts = field_name.split(Constants.path_separator)
+    new_parts = []
+    for part in parts:
+        path_parts = part.split(Constants.pair_separator)
+        if len(path_parts) == 2:
+            new_parts.append("*[position() = " + path_parts[1] + "]")
+        else:
+            new_parts.append(path_parts[0])
+    return "/".join(new_parts)
+
 # New functions.
 
 libxsltmod.xsltRegisterExtModuleFunction("list-attribute", "http://www.boddie.org.uk/ns/xmltools/template", list_attribute)
@@ -342,27 +370,9 @@
 # Utility functions.
 
 libxsltmod.xsltRegisterExtModuleFunction("url-encode", "http://www.boddie.org.uk/ns/xmltools/template", url_encode)
+libxsltmod.xsltRegisterExtModuleFunction("element-path", "http://www.boddie.org.uk/ns/xmltools/template", element_path)
 
 def get_field_name(field_or_multi_name):
     return field_or_multi_name.split(Constants.multi_separator)[0]
 
-def get_element_path(field_or_multi_name):
-
-    """
-    Convert the given 'field_or_multi_name' back to an XPath reference.
-    For example:
-    /configuration$1/details$1/base-system$$value -> /*[position() = 1]/*[position() = 1]/base-system
-    """
-
-    field_name = get_field_name(field_or_multi_name)
-    parts = field_name.split(Constants.path_separator)
-    new_parts = []
-    for part in parts:
-        path_parts = part.split(Constants.pair_separator)
-        if len(path_parts) == 2:
-            new_parts.append("*[position() = " + path_parts[1] + "]")
-        else:
-            new_parts.append(path_parts[0])
-    return "/".join(new_parts)
-
 # vim: tabstop=4 expandtab shiftwidth=4