459 lines
17 KiB
Python
459 lines
17 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# SàT frontend tools
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# Copyright (C) 2009, 2010, 2011, 2012, 2013 Jérôme Poisson (goffi@goffi.org)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from sat.core.i18n import _
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from sat_frontends.constants import Const
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from logging import debug, info, warning, error
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class InvalidXMLUI(Exception):
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pass
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def getText(node):
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"""Get child text nodes
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@param node: dom Node
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@return: joined unicode text of all nodes
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"""
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data = []
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for child in node.childNodes:
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if child.nodeType == child.TEXT_NODE:
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data.append(child.wholeText)
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return u"".join(data)
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class Widget(object):
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""" base Widget """
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pass
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class EmptyWidget(Widget):
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""" Just a placeholder widget """
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pass
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class TextWidget(Widget):
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""" Non interactive text """
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pass
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class LabelWidget(Widget):
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""" Non interactive text """
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pass
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class JidWidget(Widget):
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""" Jabber ID """
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pass
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class DividerWidget(Widget):
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""" Separator """
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pass
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class StringWidget(Widget):
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""" Input widget with require a string
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often called Edit in toolkits
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"""
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class PasswordWidget(Widget):
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""" Input widget with require a masked string
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"""
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class TextBoxWidget(Widget):
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""" Input widget with require a long, possibly multilines string
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often called TextArea in toolkits
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"""
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class BoolWidget(Widget):
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""" Input widget with require a boolean value
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often called CheckBox in toolkits
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"""
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class ButtonWidget(Widget):
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""" A clickable widget """
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class ListWidget(Widget):
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""" A widget able to show/choose one or several strings in a list """
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class Container(Widget):
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""" Widget which can contain other ones with a specific layout """
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@classmethod
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def _xmluiAdapt(cls, instance):
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""" Make cls as instance.__class__
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cls must inherit from original instance class
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Usefull when you get a class from UI toolkit
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"""
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assert instance.__class__ in cls.__bases__
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instance.__class__ = type(cls.__name__, cls.__bases__, dict(cls.__dict__))
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class PairsContainer(Container):
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""" Widgets are disposed in rows of two (usually label/input) """
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pass
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class TabsContainer(Container):
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""" A container which several other containers in tabs
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Often called Notebook in toolkits
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"""
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class VerticalContainer(Container):
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""" Widgets are disposed vertically """
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pass
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class AdvancedListContainer(Container):
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""" Widgets are disposed in rows with advaned features """
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pass
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class XMLUI(object):
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""" Base class to construct SàT XML User Interface
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New frontends can inherite this class to easily implement XMLUI
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@property widget_factory: factory to create frontend-specific widgets
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@proporety dialog_factory: factory to create frontend-specific dialogs
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"""
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widget_factory = None
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dialog_factory = None # TODO
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def __init__(self, host, xml_data, title = None, flags = None, dom_parse=None, dom_free=None):
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""" Initialise the XMLUI instance
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@param host: %(doc_host)s
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@param xml_data: the raw XML containing the UI
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@param title: force the title, or use XMLUI one if None
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@param flags: list of string which can be:
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- NO_CANCEL: the UI can't be cancelled
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@param dom_parse: methode equivalent to minidom.parseString (but which must manage unicode), or None to use default one
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@param dom_free: method used to free the parsed DOM
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"""
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if dom_parse is None:
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from xml.dom import minidom
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self.dom_parse = lambda xml_data: minidom.parseString(xml_data.encode('utf-8'))
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self.dom_free = lambda cat_dom: cat_dom.unlink()
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else:
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self.dom_parse = dom_parse
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self.dom_free = dom_free or (lambda cat_dom: None)
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self.host = host
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self.title = title or ""
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if flags is None:
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flags = []
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self.flags = flags
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self.ctrl_list = {} # usefull to access ctrl
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self._main_cont = None
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self.constructUI(xml_data)
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def escape(self, name):
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""" return escaped name for forms """
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return u"%s%s" % (Const.SAT_FORM_PREFIX, name)
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@property
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def main_cont(self):
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return self._main_cont
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@main_cont.setter
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def main_cont(self, value):
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if self._main_cont is not None:
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raise ValueError(_("XMLUI can have only one main container"))
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self._main_cont = value
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def _parseChilds(self, parent, current_node, wanted = ('container',), data = None):
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""" Recursively parse childNodes of an elemen
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@param parent: widget container with '_xmluiAppend' method
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@param current_node: element from which childs will be parsed
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@param wanted: list of tag names that can be present in the childs to be SàT XMLUI compliant
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@param data: additionnal data which are needed in some cases
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"""
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for node in current_node.childNodes:
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if wanted and not node.nodeName in wanted:
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raise InvalidXMLUI('Unexpected node: [%s]' % node.nodeName)
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if node.nodeName == "container":
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type_ = node.getAttribute('type')
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if parent is self and type_ != 'vertical':
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# main container is not a VerticalContainer and we want one, so we create one to wrap it
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parent = self.widget_factory.createVerticalContainer(self)
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self.main_cont = parent
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if type_ == "tabs":
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cont = self.widget_factory.createTabsContainer(parent)
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self._parseChilds(parent, node, ('tab',), cont)
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elif type_ == "vertical":
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cont = self.widget_factory.createVerticalContainer(parent)
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self._parseChilds(cont, node, ('widget', 'container'))
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elif type_ == "pairs":
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cont = self.widget_factory.createPairsContainer(parent)
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self._parseChilds(cont, node, ('widget', 'container'))
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elif type_ == "advanced_list":
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try:
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columns = int(node.getAttribute('columns'))
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except (TypeError, ValueError):
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raise DataError("Invalid columns")
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selectable = node.getAttribute('selectable') or 'no'
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auto_index = node.getAttribute('auto_index') == 'true'
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data = {'index': 0} if auto_index else None
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cont = self.widget_factory.createAdvancedListContainer(parent, columns, selectable)
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callback_id = node.getAttribute("callback") or None
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if callback_id is not None:
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if selectable == 'no':
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raise ValueError("can't have selectable=='no' and callback_id at the same time")
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cont._xmlui_callback_id = callback_id
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cont._xmluiOnSelect(self.onAdvListSelect)
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self._parseChilds(cont, node, ('row',), data)
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else:
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warning(_("Unknown container [%s], using default one") % type_)
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cont = self.widget_factory.createVerticalContainer(parent)
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self._parseChilds(cont, node, ('widget', 'container'))
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try:
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parent._xmluiAppend(cont)
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except (AttributeError, TypeError): # XXX: TypeError is here because pyjamas raise a TypeError instead of an AttributeError
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if parent is self:
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self.main_cont = cont
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else:
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raise Exception(_("Internal Error, container has not _xmluiAppend method"))
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elif node.nodeName == 'tab':
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name = node.getAttribute('name')
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label = node.getAttribute('label')
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if not name or not isinstance(data, TabsContainer):
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raise InvalidXMLUI
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if self.type == 'param':
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self._current_category = name #XXX: awful hack because params need category and we don't keep parent
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tab_cont = data
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new_tab = tab_cont._xmluiAddTab(label or name)
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self._parseChilds(new_tab, node, ('widget', 'container'))
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elif node.nodeName == 'row':
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try:
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index = str(data['index'])
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data['index'] += 1
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except TypeError:
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index = node.getAttribute('index') or None
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parent._xmluiAddRow(index)
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self._parseChilds(parent, node, ('widget', 'container'))
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elif node.nodeName == "widget":
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id_ = node.getAttribute("id")
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name = node.getAttribute("name")
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type_ = node.getAttribute("type")
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value = node.getAttribute("value") if node.hasAttribute('value') else u''
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if type_=="empty":
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ctrl = self.widget_factory.createEmptyWidget(parent)
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elif type_=="text":
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try:
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value = node.childNodes[0].wholeText
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except IndexError:
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# warning (_("text node has no child !"))
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pass # FIXME proper warning (this one is not OK with Libervia)
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ctrl = self.widget_factory.createTextWidget(parent, value)
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elif type_=="label":
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ctrl = self.widget_factory.createLabelWidget(parent, value)
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elif type_=="jid":
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ctrl = self.widget_factory.createJidWidget(parent, value)
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elif type_=="divider":
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style = node.getAttribute("style") or 'line'
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ctrl = self.widget_factory.createDividerWidget(parent, style)
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elif type_=="string":
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ctrl = self.widget_factory.createStringWidget(parent, value)
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self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
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elif type_=="password":
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ctrl = self.widget_factory.createPasswordWidget(parent, value)
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self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
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elif type_=="textbox":
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ctrl = self.widget_factory.createTextBoxWidget(parent, value)
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self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
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elif type_=="bool":
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ctrl = self.widget_factory.createBoolWidget(parent, value=='true')
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self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
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elif type_=="list":
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style=[] if node.getAttribute("multi")=='yes' else ['single']
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_options = [(option.getAttribute("value"), option.getAttribute("label")) for option in node.getElementsByTagName("option")]
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ctrl = self.widget_factory.createListWidget(parent, _options, style)
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ctrl._xmluiSelectValue(node.getAttribute("value"))
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self.ctrl_list[name] = ({'type':type_, 'control':ctrl})
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elif type_=="button":
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callback_id = node.getAttribute("callback")
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ctrl = self.widget_factory.createButtonWidget(parent, value, self.onButtonPress)
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ctrl._xmlui_param_id = (callback_id,[field.getAttribute('name') for field in node.getElementsByTagName("field_back")])
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else:
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error(_("FIXME FIXME FIXME: widget type [%s] is not implemented") % type_)
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raise NotImplementedError(_("FIXME FIXME FIXME: type [%s] is not implemented") % type_)
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if self.type == 'param':
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try:
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ctrl._xmluiOnChange(self.onParamChange)
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ctrl._param_category = self._current_category
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except (AttributeError, TypeError): # XXX: TypeError is here because pyjamas raise a TypeError instead of an AttributeError
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if not isinstance(ctrl, (EmptyWidget, TextWidget, LabelWidget, JidWidget)):
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warning(_("No change listener on [%s]" % ctrl))
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ctrl._xmlui_name = name
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parent._xmluiAppend(ctrl)
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else:
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raise NotImplementedError(_('Unknown tag [%s]') % node.nodeName)
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def constructUI(self, xml_data, post_treat=None):
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""" Actually construct the UI
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@param xml_data: raw XMLUI
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@param post_treat: frontend specific treatments to do once the UI is constructed
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@return: constructed widget
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"""
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cat_dom = self.dom_parse(xml_data)
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top=cat_dom.documentElement
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self.type = top.getAttribute("type")
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self.title = self.title or top.getAttribute("title") or u""
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self.session_id = top.getAttribute("session_id") or None
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self.submit_id = top.getAttribute("submit") or None
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if top.nodeName != "sat_xmlui" or not self.type in ['form', 'param', 'window', 'popup']:
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raise InvalidXMLUI
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if self.type == 'param':
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self.param_changed = set()
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self._parseChilds(self, cat_dom.documentElement)
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if post_treat is not None:
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post_treat()
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self.dom_free(cat_dom)
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def _xmluiClose(self):
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""" Close the window/popup/... where the constructeur XMLUI is
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this method must be overrided
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"""
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raise NotImplementedError
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def _xmluiLaunchAction(self, action_id, data):
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self.host.launchAction(action_id, data, profile_key = self.host.profile)
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def _xmluiSetParam(self, name, value, category):
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self.host.bridge.setParam(name, value, category, profile_key=self.host.profile)
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##EVENTS##
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def onParamChange(self, ctrl):
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""" Called when type is param and a widget to save is modified
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@param ctrl: widget modified
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"""
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assert(self.type == "param")
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self.param_changed.add(ctrl)
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def onAdvListSelect(self, ctrl):
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data = {}
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widgets = ctrl._xmluiGetSelectedWidgets()
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for wid in widgets:
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try:
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name = self.escape(wid._xmlui_name)
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value = wid._xmluiGetValue()
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ret[name] = value
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except (AttributeError, TypeError): # XXX: TypeError is here because pyjamas raise a TypeError instead of an AttributeError
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pass
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idx = ctrl._xmluiGetSelectedIndex()
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if idx is not None:
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data['index'] = idx
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callback_id = ctrl._xmlui_callback_id
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if callback_id is None:
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warning(_("No callback_id found"))
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return
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self._xmluiLaunchAction(callback_id, data)
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def onButtonPress(self, button):
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""" Called when an XMLUI button is clicked
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Launch the action associated to the button
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@param button: the button clicked
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"""
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callback_id, fields = button._xmlui_param_id
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data = {}
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for field in fields:
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escaped = self.escape(field)
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ctrl = self.ctrl_list[field]
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if isinstance(ctrl['control'], ListWidget):
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data[escaped] = u'\t'.join(ctrl['control']._xmluiGetSelected())
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else:
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data[escaped] = ctrl['control']._xmluiGetValue()
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self._xmluiLaunchAction(callback_id, data)
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def onFormSubmitted(self, ignore=None):
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""" An XMLUI form has been submited
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call the submit action associated with this form
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"""
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selected_values = []
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for ctrl_name in self.ctrl_list:
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escaped = self.escape(ctrl_name)
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ctrl = self.ctrl_list[ctrl_name]
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if isinstance(ctrl['control'], ListWidget):
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selected_values.append((escaped, u'\t'.join(ctrl['control']._xmluiGetSelectedValues())))
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else:
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selected_values.append((escaped, ctrl['control']._xmluiGetValue()))
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if self.submit_id is not None:
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data = dict(selected_values)
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if self.session_id is not None:
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data["session_id"] = self.session_id
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self._xmluiLaunchAction(self.submit_id, data)
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else:
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warning (_("The form data is not sent back, the type is not managed properly"))
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self._xmluiClose()
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def onFormCancelled(self, ignore=None):
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""" Called when a form is cancelled """
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debug(_("Cancelling form"))
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self._xmluiClose()
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def onSaveParams(self, ignore=None):
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""" Params are saved, we send them to backend
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self.type must be param
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"""
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assert(self.type == 'param')
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for ctrl in self.param_changed:
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if isinstance(ctrl, ListWidget):
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value = u'\t'.join(ctrl._xmluiGetSelectedValues())
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else:
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value = ctrl._xmluiGetValue()
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param_name = ctrl._xmlui_name.split(Const.SAT_PARAM_SEPARATOR)[1]
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self._xmluiSetParam(param_name, value, ctrl._param_category)
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self._xmluiClose()
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