--- a/frontends/src/tools/xmlui.py	Tue Apr 01 21:21:13 2014 +0200
+++ b/frontends/src/tools/xmlui.py	Tue Apr 01 21:30:21 2014 +0200
@@ -311,6 +311,10 @@
                     callback_id = node.getAttribute("callback")
                     ctrl = self.widget_factory.createButtonWidget(parent, value, self.onButtonPress)
                     ctrl._xmlui_param_id = (callback_id, [field.getAttribute('name') for field in node.getElementsByTagName("field_back")])
+                elif type_ == "internal_button":
+                    action = node.getAttribute("action")
+                    ctrl = self.widget_factory.createButtonWidget(parent, value, self.onInternalButtonPress)
+                    ctrl._xmlui_param_id = (action, [field.getAttribute('name') for field in node.getElementsByTagName("internal_field")])
                 else:
                     print(_("FIXME FIXME FIXME: widget type [%s] is not implemented") % type_)
                     raise NotImplementedError(_("FIXME FIXME FIXME: type [%s] is not implemented") % type_)
@@ -413,6 +417,39 @@
                 data[escaped] = ctrl['control']._xmluiGetValue()
         self._xmluiLaunchAction(callback_id, data)
 
+    def onInternalButtonPress(self, button):
+        """ Called when an internal XMLUI button is clicked
+        Do the processing associated to the button
+        @param button: the button clicked
+
+        """
+        action, fields = button._xmlui_param_id
+        if action not in ('copy', 'move'):
+            raise NotImplementedError(_("FIXME: XMLUI internal action [%s] is not implemented") % action)
+        source = None
+        for field in fields:
+            widget = self.ctrl_list[field]['control']
+            if not source:
+                source = widget
+                continue
+            if isinstance(widget, ListWidget):
+                if isinstance(source, ListWidget):
+                    values = source._xmluiGetSelectedValues()
+                else:
+                    values = [source._xmluiGetValue()]
+                    if action == 'move':
+                        source._xmluiSetValue('')
+                widget._xmluiAddValues(values, select=True)
+            else:
+                if isinstance(source, ListWidget):
+                    value = u', '.join(source._xmluiGetSelectedValues())
+                else:
+                    value = source._xmluiGetValue()
+                    if action == 'move':
+                        source._xmluiSetValue('')
+                widget._xmluiSetValue(value)
+            source = None
+
     def onFormSubmitted(self, ignore=None):
         """ An XMLUI form has been submited
         call the submit action associated with this form