--- a/src/tools/xml_tools.py	Wed Apr 02 12:37:32 2014 +0200
+++ b/src/tools/xml_tools.py	Thu Apr 03 14:38:48 2014 +0200
@@ -299,16 +299,6 @@
         self.elem.setAttribute('name', name)
 
 
-class InternalFieldElement(Element):
-    """ Used by InternalButtonWidget to indicate which field are manipulated by internal action """
-    type = 'internal_field'
-
-    def __init__(self, parent, name):
-        assert(isinstance(parent, InternalButtonWidget))
-        super(InternalFieldElement, self).__init__(parent.xmlui, parent)
-        self.elem.setAttribute('name', name)
-
-
 class OptionElement(Element):
     """" Used by ListWidget to specify options """
     type = 'option'
@@ -631,37 +621,6 @@
             FieldBackElement(self, field)
 
 
-class InternalButtonWidget(Widget):
-    type = 'internal_button'
-
-    def __init__(self, xmlui, action='copy', value=None, fields=None, name=None, parent=None):
-        """Add an button to process internal UI operations.
-
-        The internal button is not associated to any callback id because it is
-        not using the bridge (no communication with the backend).
-
-        @param action (string): a value from:
-                                - 'copy': process the widgets given in 'fields'
-                                  two by two, by copying the values of one widget
-                                  to the other.
-                                - 'move': same than copy but moves the values
-                                          if the source widget is not a List.
-                                - more operation to be added when necessary...
-        @param value (string): label of the button
-        @param fields (list): a list of widget name (string)
-        @param name: name
-        @param parent: parent container
-        """
-        if fields is None:
-            fields = []
-        super(InternalButtonWidget, self).__init__(xmlui, name, parent)
-        self.elem.setAttribute('action', action)
-        if value:
-            self.elem.setAttribute('value', value)
-        for field in fields:
-            InternalFieldElement(self, field)
-
-
 class ListWidget(InputWidget):
     type = 'list'