--- a/tools/xml_tools.py	Wed Jun 23 00:23:26 2010 +0800
+++ b/tools/xml_tools.py	Wed Jun 23 14:55:04 2010 +0800
@@ -32,6 +32,7 @@
     
     form_panel = XMLUI("form", "vertical")
     
+
     if form.instructions:
         form_panel.addText('\n'.join(form.instructions), 'instructions')
     
@@ -91,7 +92,9 @@
         self.doc = impl.createDocument(None, "sat_xmlui", None)
         top_element = self.doc.documentElement
         top_element.setAttribute("type", panel_type)
-        self.currentLayout = self.__createLayout(layout, top_element)
+        self.parentTabsLayout = None #used only we have 'tabs' layout
+        self.currentCategory = None #used only we have 'tabs' layout
+        self.changeLayout(layout)
 
     def __del__(self):
         self.doc.unlink() 
@@ -101,7 +104,7 @@
         @param type: layout type (cf init doc)
         @parent: parent element or None
         """
-        if not layout in ['vertical', 'horizontal', 'pairs']:
+        if not layout in ['vertical', 'horizontal', 'pairs', 'tabs']:
             error (_("Unknown layout type [%s]") % layout)
             assert (False)
         layout_elt = self.doc.createElement('layout')
@@ -128,7 +131,9 @@
 
     def changeLayout(self, layout):
         """Change the current layout"""
-        self.currentLayout = self.__createLayout(layout, self.doc.documentElement)
+        self.currentLayout = self.__createLayout(layout, self.currentCategory if self.currentCategory else self.doc.documentElement)
+        if layout == "tabs":
+            self.parentTabsLayout = self.currentLayout
 
 
     def addEmpty(self, name=None):
@@ -190,6 +195,20 @@
             opt.setAttribute('value', option)
             parent.appendChild(opt)
 
+    def addCategory(self, name, layout):
+        """Add a category to current layout (must be a tabs layout)"""
+        assert(layout != 'tabs')
+        if not self.parentTabsLayout:
+            error(_("Trying to add a category without parent tabs layout"))
+            assert(False)
+        if self.parentTabsLayout.getAttribute('type') != 'tabs':
+            error(_("parent layout of a category is not tabs"))
+            assert(False)
+        self.currentCategory = cat = self.doc.createElement('category')
+        cat.setAttribute('name', name)
+        self.changeLayout(layout)
+        self.parentTabsLayout.appendChild(cat)
+
     def toXml(self):
         """return the XML representation of the panel""" 
         return self.doc.toxml()