--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sat_frontends/tools/xmlui.py	Mon Apr 02 19:44:50 2018 +0200
@@ -0,0 +1,858 @@
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+
+# SàT frontend tools
+# Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from sat.core.i18n import _
+from sat.core.log import getLogger
+log = getLogger(__name__)
+from sat_frontends.quick_frontend.constants import Const as C
+from sat.core import exceptions
+
+
+class_map = {}
+CLASS_PANEL = 'panel'
+CLASS_DIALOG = 'dialog'
+CURRENT_LABEL = 'current_label'
+
+class InvalidXMLUI(Exception):
+    pass
+
+
+class ClassNotRegistedError(Exception):
+    pass
+
+
+# FIXME: this method is duplicated in frontends.tools.xmlui.getText
+def getText(node):
+    """Get child text nodes
+    @param node: dom Node
+    @return: joined unicode text of all nodes
+
+    """
+    data = []
+    for child in node.childNodes:
+        if child.nodeType == child.TEXT_NODE:
+            data.append(child.wholeText)
+    return u"".join(data)
+
+
+class Widget(object):
+    """base Widget"""
+    pass
+
+
+class EmptyWidget(Widget):
+    """Just a placeholder widget"""
+    pass
+
+
+class TextWidget(Widget):
+    """Non interactive text"""
+    pass
+
+
+class LabelWidget(Widget):
+    """Non interactive text"""
+    pass
+
+
+class JidWidget(Widget):
+    """Jabber ID"""
+    pass
+
+
+class DividerWidget(Widget):
+    """Separator"""
+    pass
+
+
+class StringWidget(Widget):
+    """Input widget wich require a string
+
+    often called Edit in toolkits
+    """
+    pass
+
+
+class JidInputWidget(Widget):
+    """Input widget wich require a string
+
+    often called Edit in toolkits
+    """
+    pass
+
+
+class PasswordWidget(Widget):
+    """Input widget with require a masked string"""
+    pass
+
+
+class TextBoxWidget(Widget):
+    """Input widget with require a long, possibly multilines string
+    often called TextArea in toolkits
+    """
+    pass
+
+
+class BoolWidget(Widget):
+    """Input widget with require a boolean value
+    often called CheckBox in toolkits
+    """
+    pass
+
+
+class IntWidget(Widget):
+    """Input widget with require an integer"""
+    pass
+
+
+class ButtonWidget(Widget):
+    """A clickable widget"""
+    pass
+
+
+class ListWidget(Widget):
+    """A widget able to show/choose one or several strings in a list"""
+    pass
+
+
+class JidsListWidget(Widget):
+    """A widget able to show/choose one or several strings in a list"""
+    pass
+
+
+class Container(Widget):
+    """Widget which can contain other ones with a specific layout"""
+
+    @classmethod
+    def _xmluiAdapt(cls, instance):
+        """Make cls as instance.__class__
+
+        cls must inherit from original instance class
+        Usefull when you get a class from UI toolkit
+        """
+        assert instance.__class__ in cls.__bases__
+        instance.__class__ = type(cls.__name__, cls.__bases__, dict(cls.__dict__))
+
+
+class PairsContainer(Container):
+    """Widgets are disposed in rows of two (usually label/input)"""
+    pass
+
+
+class LabelContainer(Container):
+    """Widgets are associated with label or empty widget"""
+    pass
+
+
+class TabsContainer(Container):
+    """A container which several other containers in tabs
+
+    Often called Notebook in toolkits
+    """
+    pass
+
+class VerticalContainer(Container):
+    """Widgets are disposed vertically"""
+    pass
+
+
+class AdvancedListContainer(Container):
+    """Widgets are disposed in rows with advaned features"""
+    pass
+
+
+class Dialog(object):
+    """base dialog"""
+
+    def __init__(self, _xmlui_parent):
+        self._xmlui_parent = _xmlui_parent
+
+    def _xmluiValidated(self, data=None):
+        if data is None:
+            data = {}
+        self._xmluiSetData(C.XMLUI_STATUS_VALIDATED, data)
+        self._xmluiSubmit(data)
+
+    def _xmluiCancelled(self):
+        data = {C.XMLUI_DATA_CANCELLED: C.BOOL_TRUE}
+        self._xmluiSetData(C.XMLUI_STATUS_CANCELLED, data)
+        self._xmluiSubmit(data)
+
+    def _xmluiSubmit(self, data):
+        if self._xmlui_parent.submit_id is None:
+            log.debug(_("Nothing to submit"))
+        else:
+            self._xmlui_parent.submit(data)
+
+    def _xmluiSetData(self, status, data):
+        pass
+
+
+class MessageDialog(Dialog):
+    """Dialog with a OK/Cancel type configuration"""
+    pass
+
+
+class NoteDialog(Dialog):
+    """Short message which doesn't need user confirmation to disappear"""
+    pass
+
+
+class ConfirmDialog(Dialog):
+    """Dialog with a OK/Cancel type configuration"""
+
+    def _xmluiSetData(self, status, data):
+        if status == C.XMLUI_STATUS_VALIDATED:
+            data[C.XMLUI_DATA_ANSWER] = C.BOOL_TRUE
+        elif status == C.XMLUI_STATUS_CANCELLED:
+            data[C.XMLUI_DATA_ANSWER] = C.BOOL_FALSE
+
+
+class FileDialog(Dialog):
+    """Dialog with a OK/Cancel type configuration"""
+    pass
+
+
+class XMLUIBase(object):
+    """Base class to construct SàT XML User Interface
+
+    This class must not be instancied directly
+    """
+
+    def __init__(self, host, parsed_dom, title=None, flags=None, callback=None, profile=C.PROF_KEY_NONE):
+        """Initialise the XMLUI instance
+
+        @param host: %(doc_host)s
+        @param parsed_dom: main parsed dom
+        @param title: force the title, or use XMLUI one if None
+        @param flags: list of string which can be:
+            - NO_CANCEL: the UI can't be cancelled
+            - FROM_BACKEND: the UI come from backend (i.e. it's not the direct result of user operation)
+        @param callback(callable, None): if not None, will be used with launchAction:
+            - if None is used, default behaviour will be used (closing the dialog and calling host.actionManager)
+            - if a callback is provided, it will be used instead, so you'll have to manage
+                dialog closing or new xmlui to display, or other action (you can call host.actionManager)
+        """
+        self.host = host
+        top=parsed_dom.documentElement
+        self.session_id = top.getAttribute("session_id") or None
+        self.submit_id = top.getAttribute("submit") or None
+        self.xmlui_title = title or top.getAttribute("title") or u""
+        if flags is None:
+            flags = []
+        self.flags = flags
+        self.callback = callback or self._defaultCb
+        self.profile = profile
+
+    @property
+    def user_action(self):
+        return "FROM_BACKEND" not in self.flags
+
+    def _defaultCb(self, data, cb_id, profile):
+        # TODO: when XMLUI updates will be managed, the _xmluiClose
+        #       must be called only if there is not update
+        self._xmluiClose()
+        self.host.actionManager(data, profile=profile)
+
+    def _isAttrSet(self, name, node):
+        """Return widget boolean attribute status
+
+        @param name: name of the attribute (e.g. "read_only")
+        @param node: Node instance
+        @return (bool): True if widget's attribute is set (C.BOOL_TRUE)
+        """
+        read_only = node.getAttribute(name) or C.BOOL_FALSE
+        return read_only.lower().strip() == C.BOOL_TRUE
+
+    def _getChildNode(self, node, name):
+        """Return the first child node with the given name
+
+        @param node: Node instance
+        @param name: name of the wanted node
+
+        @return: The found element or None
+        """
+        for child in node.childNodes:
+            if child.nodeName == name:
+                return child
+        return None
+
+    def submit(self, data):
+        self._xmluiClose()
+        if self.submit_id is None:
+            raise ValueError("Can't submit is self.submit_id is not set")
+        if "session_id" in data:
+            raise ValueError("session_id must no be used in data, it is automaticaly filled with self.session_id if present")
+        if self.session_id is not None:
+            data["session_id"] = self.session_id
+        self._xmluiLaunchAction(self.submit_id, data)
+
+    def _xmluiLaunchAction(self, action_id, data):
+        self.host.launchAction(action_id, data, callback=self.callback, profile=self.profile)
+
+    def _xmluiClose(self):
+        """Close the window/popup/... where the constructor XMLUI is
+
+        this method must be overrided
+        """
+        raise NotImplementedError
+
+
+class ValueGetter(object):
+    """dict like object which return values of widgets"""
+
+    def __init__(self, widgets, attr='value'):
+        self.attr = attr
+        self.widgets = widgets
+
+    def __getitem__(self, name):
+        return getattr(self.widgets[name], self.attr)
+
+    def __getattr__(self, name):
+        return self.__getitem__(name)
+
+    def keys(self):
+        return self.widgets.keys()
+
+
+class XMLUIPanel(XMLUIBase):
+    """XMLUI Panel
+
+    New frontends can inherit this class to easily implement XMLUI
+    @property widget_factory: factory to create frontend-specific widgets
+    @property dialog_factory: factory to create frontend-specific dialogs
+    """
+    widget_factory = None
+
+    def __init__(self, host, parsed_dom, title=None, flags=None, callback=None, ignore=None, whitelist=None, profile=C.PROF_KEY_NONE):
+        """
+
+        @param title(unicode, None): title of the
+        @property widgets(dict): widget name => widget map
+        @property widget_value(ValueGetter): retrieve widget value from it's name
+        """
+        super(XMLUIPanel, self).__init__(host, parsed_dom, title=title, flags=flags, callback=callback, profile=profile)
+        self.ctrl_list = {}  # input widget, used mainly for forms
+        self.widgets = {}  # allow to access any named widgets
+        self.widget_value = ValueGetter(self.widgets)
+        self._main_cont = None
+        if ignore is None:
+            ignore = []
+        self._ignore = ignore
+        if whitelist is not None:
+            if ignore:
+                raise exceptions.InternalError('ignore and whitelist must not be used at the same time')
+            self._whitelist = whitelist
+        else:
+            self._whitelist = None
+        self.constructUI(parsed_dom)
+
+    def escape(self, name):
+        """Return escaped name for forms"""
+        return u"%s%s" % (C.SAT_FORM_PREFIX, name)
+
+    @property
+    def main_cont(self):
+        return self._main_cont
+
+    @main_cont.setter
+    def main_cont(self, value):
+        if self._main_cont is not None:
+            raise ValueError(_("XMLUI can have only one main container"))
+        self._main_cont = value
+
+    def _parseChilds(self, _xmlui_parent, current_node, wanted = ('container',), data = None):
+        """Recursively parse childNodes of an element
+
+        @param _xmlui_parent: widget container with '_xmluiAppend' method
+        @param current_node: element from which childs will be parsed
+        @param wanted: list of tag names that can be present in the childs to be SàT XMLUI compliant
+        @param data(None, dict): additionnal data which are needed in some cases
+        """
+        for node in current_node.childNodes:
+            if data is None:
+                data = {}
+            if wanted and not node.nodeName in wanted:
+                raise InvalidXMLUI('Unexpected node: [%s]' % node.nodeName)
+
+            if node.nodeName == "container":
+                type_ = node.getAttribute('type')
+                if _xmlui_parent is self and type_ != 'vertical':
+                    # main container is not a VerticalContainer and we want one, so we create one to wrap it
+                    _xmlui_parent = self.widget_factory.createVerticalContainer(self)
+                    self.main_cont = _xmlui_parent
+                if type_ == "tabs":
+                    cont = self.widget_factory.createTabsContainer(_xmlui_parent)
+                    self._parseChilds(_xmlui_parent, node, ('tab',), {'tabs_cont': cont})
+                elif type_ == "vertical":
+                    cont = self.widget_factory.createVerticalContainer(_xmlui_parent)
+                    self._parseChilds(cont, node, ('widget', 'container'))
+                elif type_ == "pairs":
+                    cont = self.widget_factory.createPairsContainer(_xmlui_parent)
+                    self._parseChilds(cont, node, ('widget', 'container'))
+                elif type_ == "label":
+                    cont = self.widget_factory.createLabelContainer(_xmlui_parent)
+                    self._parseChilds(cont, node, ('widget', 'container'), {CURRENT_LABEL: None})
+                elif type_ == "advanced_list":
+                    try:
+                        columns = int(node.getAttribute('columns'))
+                    except (TypeError, ValueError):
+                        raise exceptions.DataError("Invalid columns")
+                    selectable = node.getAttribute('selectable') or 'no'
+                    auto_index = node.getAttribute('auto_index') == C.BOOL_TRUE
+                    data = {'index': 0} if auto_index else None
+                    cont = self.widget_factory.createAdvancedListContainer(_xmlui_parent, columns, selectable)
+                    callback_id = node.getAttribute("callback") or None
+                    if callback_id is not None:
+                        if selectable == 'no':
+                            raise ValueError("can't have selectable=='no' and callback_id at the same time")
+                        cont._xmlui_callback_id = callback_id
+                        cont._xmluiOnSelect(self.onAdvListSelect)
+
+                    self._parseChilds(cont, node, ('row',), data)
+                else:
+                    log.warning(_("Unknown container [%s], using default one") % type_)
+                    cont = self.widget_factory.createVerticalContainer(_xmlui_parent)
+                    self._parseChilds(cont, node, ('widget', 'container'))
+                try:
+                    xmluiAppend = _xmlui_parent._xmluiAppend
+                except (AttributeError, TypeError): # XXX: TypeError is here because pyjamas raise a TypeError instead of an AttributeError
+                    if _xmlui_parent is self:
+                        self.main_cont = cont
+                    else:
+                        raise Exception(_("Internal Error, container has not _xmluiAppend method"))
+                else:
+                    xmluiAppend(cont)
+
+            elif node.nodeName == 'tab':
+                name = node.getAttribute('name')
+                label = node.getAttribute('label')
+                selected = C.bool(node.getAttribute('selected') or C.BOOL_FALSE)
+                if not name or not 'tabs_cont' in data:
+                    raise InvalidXMLUI
+                if self.type == 'param':
+                    self._current_category = name #XXX: awful hack because params need category and we don't keep parent
+                tab_cont = data['tabs_cont']
+                new_tab = tab_cont._xmluiAddTab(label or name, selected)
+                self._parseChilds(new_tab, node, ('widget', 'container'))
+
+            elif node.nodeName == 'row':
+                try:
+                    index = str(data['index'])
+                except KeyError:
+                    index = node.getAttribute('index') or None
+                else:
+                    data['index'] += 1
+                _xmlui_parent._xmluiAddRow(index)
+                self._parseChilds(_xmlui_parent, node, ('widget', 'container'))
+
+            elif node.nodeName == "widget":
+                name = node.getAttribute("name")
+                if name and (name in self._ignore or self._whitelist is not None and name not in self._whitelist):
+                    # current widget is ignored, but there may be already a label
+                    if CURRENT_LABEL in data:
+                        # if so, we remove it from parent
+                        _xmlui_parent._xmluiRemove(data.pop(CURRENT_LABEL))
+                    continue
+                type_ = node.getAttribute("type")
+                value_elt = self._getChildNode(node, "value")
+                if value_elt is not None:
+                    value = getText(value_elt)
+                else:
+                    value = node.getAttribute("value") if node.hasAttribute('value') else u''
+                if type_=="empty":
+                    ctrl = self.widget_factory.createEmptyWidget(_xmlui_parent)
+                    if CURRENT_LABEL in data:
+                        data[CURRENT_LABEL] = None
+                elif type_=="text":
+                    ctrl = self.widget_factory.createTextWidget(_xmlui_parent, value)
+                elif type_=="label":
+                    ctrl = self.widget_factory.createLabelWidget(_xmlui_parent, value)
+                    data[CURRENT_LABEL] = ctrl
+                elif type_=="jid":
+                    ctrl = self.widget_factory.createJidWidget(_xmlui_parent, value)
+                elif type_=="divider":
+                    style = node.getAttribute("style") or 'line'
+                    ctrl = self.widget_factory.createDividerWidget(_xmlui_parent, style)
+                elif type_=="string":
+                    ctrl = self.widget_factory.createStringWidget(_xmlui_parent, value, self._isAttrSet("read_only", node))
+                    self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
+                elif type_=="jid_input":
+                    ctrl = self.widget_factory.createJidInputWidget(_xmlui_parent, value, self._isAttrSet("read_only", node))
+                    self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
+                elif type_=="password":
+                    ctrl = self.widget_factory.createPasswordWidget(_xmlui_parent, value, self._isAttrSet("read_only", node))
+                    self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
+                elif type_=="textbox":
+                    ctrl = self.widget_factory.createTextBoxWidget(_xmlui_parent, value, self._isAttrSet("read_only", node))
+                    self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
+                elif type_=="bool":
+                    ctrl = self.widget_factory.createBoolWidget(_xmlui_parent, value==C.BOOL_TRUE, self._isAttrSet("read_only", node))
+                    self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
+                elif type_ == "int":
+                    ctrl = self.widget_factory.createIntWidget(_xmlui_parent, value, self._isAttrSet("read_only", node))
+                    self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
+                elif type_ == "list":
+                    style = [] if node.getAttribute("multi") == 'yes' else ['single']
+                    for attr in (u'noselect', u'extensible', u'reducible', u'inline'):
+                        if node.getAttribute(attr) == 'yes':
+                            style.append(attr)
+                    _options = [(option.getAttribute("value"), option.getAttribute("label")) for option in node.getElementsByTagName("option")]
+                    _selected = [option.getAttribute("value") for option in node.getElementsByTagName("option") if option.getAttribute('selected') == C.BOOL_TRUE]
+                    ctrl = self.widget_factory.createListWidget(_xmlui_parent, _options, _selected, style)
+                    self.ctrl_list[name] = ({'type': type_, 'control': ctrl})
+                elif type_ == "jids_list":
+                    style = []
+                    jids = [getText(jid_) for jid_ in node.getElementsByTagName("jid")]
+                    ctrl = self.widget_factory.createJidsListWidget(_xmlui_parent, jids, style)
+                    self.ctrl_list[name] = ({'type': type_, 'control': ctrl})
+                elif type_=="button":
+                    callback_id = node.getAttribute("callback")
+                    ctrl = self.widget_factory.createButtonWidget(_xmlui_parent, value, self.onButtonPress)
+                    ctrl._xmlui_param_id = (callback_id, [field.getAttribute('name') for field in node.getElementsByTagName("field_back")])
+                else:
+                    log.error(_("FIXME FIXME FIXME: widget type [%s] is not implemented") % type_)
+                    raise NotImplementedError(_("FIXME FIXME FIXME: type [%s] is not implemented") % type_)
+
+                if name:
+                    self.widgets[name] = ctrl
+
+                if self.type == 'param' and type_ not in ('text', 'button'):
+                    try:
+                        ctrl._xmluiOnChange(self.onParamChange)
+                        ctrl._param_category = self._current_category
+                    except (AttributeError, TypeError):  # XXX: TypeError is here because pyjamas raise a TypeError instead of an AttributeError
+                        if not isinstance(ctrl, (EmptyWidget, TextWidget, LabelWidget, JidWidget)):
+                            log.warning(_("No change listener on [%s]") % ctrl)
+
+                elif type_ != 'text':
+                    callback = node.getAttribute("internal_callback") or None
+                    if callback:
+                        fields = [field.getAttribute('name') for field in node.getElementsByTagName("internal_field")]
+                        cb_data = self.getInternalCallbackData(callback, node)
+                        ctrl._xmlui_param_internal = (callback, fields, cb_data)
+                        if type_ == 'button':
+                            ctrl._xmluiOnClick(self.onChangeInternal)
+                        else:
+                            ctrl._xmluiOnChange(self.onChangeInternal)
+
+                ctrl._xmlui_name = name
+                _xmlui_parent._xmluiAppend(ctrl)
+                if CURRENT_LABEL in data and not isinstance(ctrl, LabelWidget):
+                    # this key is set in LabelContainer, when present
+                    # we can associate the label with the widget it is labelling
+                    data.pop(CURRENT_LABEL)._xmlui_for_name = name
+
+            else:
+                raise NotImplementedError(_('Unknown tag [%s]') % node.nodeName)
+
+    def constructUI(self, parsed_dom, post_treat=None):
+        """Actually construct the UI
+
+        @param parsed_dom: main parsed dom
+        @param post_treat: frontend specific treatments to do once the UI is constructed
+        @return: constructed widget
+        """
+        top=parsed_dom.documentElement
+        self.type = top.getAttribute("type")
+        if top.nodeName != "sat_xmlui" or not self.type in ['form', 'param', 'window', 'popup']:
+            raise InvalidXMLUI
+
+        if self.type == 'param':
+            self.param_changed = set()
+
+        self._parseChilds(self, parsed_dom.documentElement)
+
+        if post_treat is not None:
+            post_treat()
+
+    def _xmluiSetParam(self, name, value, category):
+        self.host.bridge.setParam(name, value, category, profile_key=self.profile)
+
+    ##EVENTS##
+
+    def onParamChange(self, ctrl):
+        """Called when type is param and a widget to save is modified
+
+        @param ctrl: widget modified
+        """
+        assert self.type == "param"
+        self.param_changed.add(ctrl)
+
+    def onAdvListSelect(self, ctrl):
+        data = {}
+        widgets = ctrl._xmluiGetSelectedWidgets()
+        for wid in widgets:
+            try:
+                name = self.escape(wid._xmlui_name)
+                value = wid._xmluiGetValue()
+                data[name] = value
+            except (AttributeError, TypeError): # XXX: TypeError is here because pyjamas raise a TypeError instead of an AttributeError
+                pass
+        idx = ctrl._xmluiGetSelectedIndex()
+        if idx is not None:
+            data['index'] = idx
+        callback_id = ctrl._xmlui_callback_id
+        if callback_id is None:
+            log.info(_("No callback_id found"))
+            return
+        self._xmluiLaunchAction(callback_id, data)
+
+    def onButtonPress(self, button):
+        """Called when an XMLUI button is clicked
+
+        Launch the action associated to the button
+        @param button: the button clicked
+        """
+        callback_id, fields = button._xmlui_param_id
+        if not callback_id:  # the button is probably bound to an internal action
+            return
+        data = {}
+        for field in fields:
+            escaped = self.escape(field)
+            ctrl = self.ctrl_list[field]
+            if isinstance(ctrl['control'], ListWidget):
+                data[escaped] = u'\t'.join(ctrl['control']._xmluiGetSelectedValues())
+            else:
+                data[escaped] = ctrl['control']._xmluiGetValue()
+        self._xmluiLaunchAction(callback_id, data)
+
+    def onChangeInternal(self, ctrl):
+        """Called when a widget that has been bound to an internal callback is changed.
+
+        This is used to perform some UI actions without communicating with the backend.
+        See sat.tools.xml_tools.Widget.setInternalCallback for more details.
+        @param ctrl: widget modified
+        """
+        action, fields, data = ctrl._xmlui_param_internal
+        if action not in ('copy', 'move', 'groups_of_contact'):
+            raise NotImplementedError(_("FIXME: XMLUI internal action [%s] is not implemented") % action)
+
+        def copy_move(source, target):
+            """Depending of 'action' value, copy or move from source to target."""
+            if isinstance(target, ListWidget):
+                if isinstance(source, ListWidget):
+                    values = source._xmluiGetSelectedValues()
+                else:
+                    values = [source._xmluiGetValue()]
+                    if action == 'move':
+                        source._xmluiSetValue('')
+                values = [value for value in values if value]
+                if values:
+                    target._xmluiAddValues(values, select=True)
+            else:
+                if isinstance(source, ListWidget):
+                    value = u', '.join(source._xmluiGetSelectedValues())
+                else:
+                    value = source._xmluiGetValue()
+                    if action == 'move':
+                        source._xmluiSetValue('')
+                target._xmluiSetValue(value)
+
+        def groups_of_contact(source, target):
+            """Select in target the groups of the contact which is selected in source."""
+            assert isinstance(source, ListWidget)
+            assert isinstance(target, ListWidget)
+            try:
+                contact_jid_s = source._xmluiGetSelectedValues()[0]
+            except IndexError:
+                return
+            target._xmluiSelectValues(data[contact_jid_s])
+            pass
+
+        source = None
+        for field in fields:
+            widget = self.ctrl_list[field]['control']
+            if not source:
+                source = widget
+                continue
+            if action in ('copy', 'move'):
+                copy_move(source, widget)
+            elif action == 'groups_of_contact':
+                groups_of_contact(source, widget)
+            source = None
+
+    def getInternalCallbackData(self, action, node):
+        """Retrieve from node the data needed to perform given action.
+
+        @param action (string): a value from the one that can be passed to the
+            'callback' parameter of sat.tools.xml_tools.Widget.setInternalCallback
+        @param node (DOM Element): the node of the widget that triggers the callback
+        """
+        # TODO: it would be better to not have a specific way to retrieve
+        # data for each action, but instead to have a generic method to
+        # extract any kind of data structure from the 'internal_data' element.
+
+        try:  # data is stored in the first 'internal_data' element of the node
+            data_elts = node.getElementsByTagName('internal_data')[0].childNodes
+        except IndexError:
+            return None
+        data = {}
+        if action == 'groups_of_contact':  # return a dict(key: string, value: list[string])
+            for elt in data_elts:
+                jid_s = elt.getAttribute('name')
+                data[jid_s] = []
+                for value_elt in elt.childNodes:
+                    data[jid_s].append(value_elt.getAttribute('name'))
+        return data
+
+    def onFormSubmitted(self, ignore=None):
+        """An XMLUI form has been submited
+
+        call the submit action associated with this form
+        """
+        selected_values = []
+        for ctrl_name in self.ctrl_list:
+            escaped = self.escape(ctrl_name)
+            ctrl = self.ctrl_list[ctrl_name]
+            if isinstance(ctrl['control'], ListWidget):
+                selected_values.append((escaped, u'\t'.join(ctrl['control']._xmluiGetSelectedValues())))
+            else:
+                selected_values.append((escaped, ctrl['control']._xmluiGetValue()))
+        if self.submit_id is not None:
+            data = dict(selected_values)
+            self.submit(data)
+        else:
+            log.warning(_("The form data is not sent back, the type is not managed properly"))
+            self._xmluiClose()
+
+    def onFormCancelled(self, ignore=None):
+        """Called when a form is cancelled"""
+        log.debug(_("Cancelling form"))
+        if self.submit_id is not None:
+            data = {C.XMLUI_DATA_CANCELLED: C.BOOL_TRUE}
+            self.submit(data)
+        else:
+            log.warning(_("The form data is not sent back, the type is not managed properly"))
+        self._xmluiClose()
+
+    def onSaveParams(self, ignore=None):
+        """Params are saved, we send them to backend
+
+        self.type must be param
+        """
+        assert self.type == 'param'
+        for ctrl in self.param_changed:
+            if isinstance(ctrl, ListWidget):
+                value = u'\t'.join(ctrl._xmluiGetSelectedValues())
+            else:
+                value = ctrl._xmluiGetValue()
+            param_name = ctrl._xmlui_name.split(C.SAT_PARAM_SEPARATOR)[1]
+            self._xmluiSetParam(param_name, value, ctrl._param_category)
+
+        self._xmluiClose()
+
+    def show(self, *args, **kwargs):
+        pass
+
+
+class XMLUIDialog(XMLUIBase):
+    dialog_factory = None
+
+    def __init__(self, host, parsed_dom, title=None, flags=None, callback=None, ignore=None, profile=C.PROF_KEY_NONE):
+        super(XMLUIDialog, self).__init__(host, parsed_dom, title=title, flags=flags, callback=callback, profile=profile)
+        top=parsed_dom.documentElement
+        dlg_elt =  self._getChildNode(top, "dialog")
+        if dlg_elt is None:
+            raise ValueError("Invalid XMLUI: no Dialog element found !")
+        dlg_type = dlg_elt.getAttribute("type") or C.XMLUI_DIALOG_MESSAGE
+        try:
+            mess_elt = self._getChildNode(dlg_elt, C.XMLUI_DATA_MESS)
+            message = getText(mess_elt)
+        except (TypeError, AttributeError): # XXX: TypeError is here because pyjamas raise a TypeError instead of an AttributeError
+            message = ""
+        level = dlg_elt.getAttribute(C.XMLUI_DATA_LVL) or C.XMLUI_DATA_LVL_INFO
+
+        if dlg_type == C.XMLUI_DIALOG_MESSAGE:
+            self.dlg = self.dialog_factory.createMessageDialog(self, self.xmlui_title, message, level)
+        elif dlg_type == C.XMLUI_DIALOG_NOTE:
+            self.dlg = self.dialog_factory.createNoteDialog(self, self.xmlui_title, message, level)
+        elif dlg_type == C.XMLUI_DIALOG_CONFIRM:
+            try:
+                buttons_elt = self._getChildNode(dlg_elt, "buttons")
+                buttons_set = buttons_elt.getAttribute("set") or C.XMLUI_DATA_BTNS_SET_DEFAULT
+            except (TypeError, AttributeError): # XXX: TypeError is here because pyjamas raise a TypeError instead of an AttributeError
+                buttons_set = C.XMLUI_DATA_BTNS_SET_DEFAULT
+            self.dlg = self.dialog_factory.createConfirmDialog(self, self.xmlui_title, message, level, buttons_set)
+        elif dlg_type == C.XMLUI_DIALOG_FILE:
+            try:
+                file_elt = self._getChildNode(dlg_elt, "file")
+                filetype = file_elt.getAttribute("type") or C.XMLUI_DATA_FILETYPE_DEFAULT
+            except (TypeError, AttributeError): # XXX: TypeError is here because pyjamas raise a TypeError instead of an AttributeError
+                filetype = C.XMLUI_DATA_FILETYPE_DEFAULT
+            self.dlg = self.dialog_factory.createFileDialog(self, self.xmlui_title, message, level, filetype)
+        else:
+            raise ValueError("Unknown dialog type [%s]" % dlg_type)
+
+    def show(self):
+        self.dlg._xmluiShow()
+
+    def _xmluiClose(self):
+        self.dlg._xmluiClose()
+
+
+def registerClass(type_, class_):
+    """Register the class to use with the factory
+
+    @param type_: one of:
+        CLASS_PANEL: classical XMLUI interface
+        CLASS_DIALOG: XMLUI dialog
+    @param class_: the class to use to instanciate given type
+    """
+    assert type_ in (CLASS_PANEL, CLASS_DIALOG)
+    class_map[type_] = class_
+
+
+def create(host, xml_data, title=None, flags=None, dom_parse=None, dom_free=None, callback=None, ignore=None, whitelist=None, profile=C.PROF_KEY_NONE):
+    """
+        @param dom_parse: methode equivalent to minidom.parseString (but which must manage unicode), or None to use default one
+        @param dom_free: method used to free the parsed DOM
+        @param ignore(list[unicode], None): name of widgets to ignore
+            widgets with name in this list and their label will be ignored
+        @param whitelist(list[unicode], None): name of widgets to keep
+            when not None, only widgets in this list and their label will be kept
+            mutually exclusive with ignore
+    """
+    if dom_parse is None:
+        from xml.dom import minidom
+        dom_parse = lambda xml_data: minidom.parseString(xml_data.encode('utf-8'))
+        dom_free = lambda parsed_dom: parsed_dom.unlink()
+    else:
+        dom_parse = dom_parse
+        dom_free = dom_free or (lambda parsed_dom: None)
+    parsed_dom = dom_parse(xml_data)
+    top=parsed_dom.documentElement
+    ui_type = top.getAttribute("type")
+    try:
+        if ui_type != C.XMLUI_DIALOG:
+            cls = class_map[CLASS_PANEL]
+        else:
+            cls = class_map[CLASS_DIALOG]
+    except KeyError:
+        raise ClassNotRegistedError(_("You must register classes with registerClass before creating a XMLUI"))
+
+    xmlui = cls(host, parsed_dom,
+                title = title,
+                flags = flags,
+                callback = callback,
+                ignore = ignore,
+                whitelist = whitelist,
+                profile = profile)
+    dom_free(parsed_dom)
+    return xmlui