# HG changeset patch
# User paulb
# Date 1129134571 0
# Node ID 29f8b70da02a6436a4d587e552b586aee2ccae5e
# Parent  78d7a2396f753cea4c91dfb5adfe25a9a9547adf
[project @ 2005-10-12 16:29:31 by paulb]
Added selector-name extension function.

diff -r 78d7a2396f75 -r 29f8b70da02a XSLForms/Output.py
--- a/XSLForms/Output.py	Wed Oct 12 15:26:30 2005 +0000
+++ b/XSLForms/Output.py	Wed Oct 12 16:29:31 2005 +0000
@@ -264,6 +264,27 @@
         l.append(node_path + Constants.path_separator + attribute_name)
     return ",".join(l).encode("utf-8")
 
+def selector_name(context, field_name, nodes):
+
+    """
+    Exposed as {template:selector-name(field_name, nodes)}.
+    Provides a selector field name defined using 'field_name' and referring to
+    the given 'nodes'. For example:
+
+    template:selector-name('add-platform', package/platforms) -> 'add-platform=/package$1/platforms$1'
+
+    NOTE: The 'nodes' must be element references.
+    """
+
+    #print "selector_name"
+    names = []
+    for node in nodes:
+        name = path_to_node(libxml2dom.Node(node), 0, None, 0)
+        if name not in names:
+            names.append(field_name + "=" + name)
+    r = ",".join(names)
+    return r.encode("utf-8")
+
 # Old implementations.
 
 def multi_field_name(context, multivalue_name):
@@ -338,6 +359,7 @@
 libxsltmod.xsltRegisterExtModuleFunction("other-attributes", "http://www.boddie.org.uk/ns/xmltools/template", other_attributes)
 libxsltmod.xsltRegisterExtModuleFunction("child-element", "http://www.boddie.org.uk/ns/xmltools/template", child_element)
 libxsltmod.xsltRegisterExtModuleFunction("child-attribute", "http://www.boddie.org.uk/ns/xmltools/template", child_attribute)
+libxsltmod.xsltRegisterExtModuleFunction("selector-name", "http://www.boddie.org.uk/ns/xmltools/template", selector_name)
 
 # New names.