libervia-backend/tools/xml_tools.py
2010-06-23 00:23:26 +08:00

195 lines
7.1 KiB
Python

#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
SAT: a jabber client
Copyright (C) 2009, 2010 Jérôme Poisson (goffi@goffi.org)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
from logging import debug, info, error
from xml.dom import minidom
from wokkel import data_form
import pdb
"""This library help manage XML used in SàT (parameters, registration, etc) """
def dataForm2xml(form):
"""Take a data form (xep-0004, Wokkel's implementation) and convert it to a SàT xml"""
form_panel = XMLUI("form", "vertical")
if form.instructions:
form_panel.addText('\n'.join(form.instructions), 'instructions')
form_panel.changeLayout("pairs")
for field in form.fieldList:
if field.fieldType == 'fixed':
__field_type = 'text'
elif field.fieldType == 'text-single':
__field_type = "string"
elif field.fieldType == 'text-private':
__field_type = "password"
elif field.fieldType == 'list-single':
__field_type = "list"
else:
error (u"FIXME FIXME FIXME: Type [%s] is not managed yet by SàT" % field.fieldType)
__field_type = "string"
if field.label:
form_panel.addLabel(field.label)
else:
form_panel.addEmpty()
elem = form_panel.addElement(__field_type, field.var, None, field.value, [option.value for option in field.options])
return form_panel.toXml()
def tupleList2dataForm(values):
"""convert a list of tuples (name,value) to a wokkel submit data form"""
form = data_form.Form('submit')
for value in values:
field = data_form.Field(var=value[0], value=value[1])
form.addField(field)
return form
class XMLUI:
"""This class is used to create a user interface (form/window/parameters/etc) using SàT XML"""
def __init__(self, panel_type, layout="vertical"):
"""Init SàT XML Panel
@param panel_type: one of
- window (new window)
- form (formulaire, depend of the frontend, usually a panel with cancel/submit buttons)
- param (parameters, presentatio depend of the frontend)
@param layout: disposition of elements, one of:
- VERTICAL: elements are disposed up to bottom
- HORIZONTAL: elements are disposed left to right
- PAIRS: elements come on two aligned columns
(usually one for a label, the next for the element)
"""
if not panel_type in ['window', 'form', 'param']:
error(_("Unknown panel type [%s]") % panel_type)
assert(False)
self.type = panel_type
impl = minidom.getDOMImplementation()
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)
def __del__(self):
self.doc.unlink()
def __createLayout(self, layout, parent=None):
"""Create a layout element
@param type: layout type (cf init doc)
@parent: parent element or None
"""
if not layout in ['vertical', 'horizontal', 'pairs']:
error (_("Unknown layout type [%s]") % layout)
assert (False)
layout_elt = self.doc.createElement('layout')
layout_elt.setAttribute('type',layout)
if parent != None:
parent.appendChild(layout_elt)
return layout_elt
def __createElem(self, type, name=None, parent = None):
"""Create an element
@param type: one of
- empty: empty element (usefull to skip something in a layout, e.g. skip first element in a PAIRS layout)
- text: text to be displayed in an multi-line area, e.g. instructions
@param name: name of the element or None
@param parent: parent element or None
"""
elem = self.doc.createElement('elem')
if name:
elem.setAttribute('name', name)
elem.setAttribute('type', type)
if parent != None:
parent.appendChild(elem)
return elem
def changeLayout(self, layout):
"""Change the current layout"""
self.currentLayout = self.__createLayout(layout, self.doc.documentElement)
def addEmpty(self, name=None):
"""Add a multi-lines text"""
elem = self.__createElem('empty', name, self.currentLayout)
def addText(self, text, name=None):
"""Add a multi-lines text"""
elem = self.__createElem('text', name, self.currentLayout)
text = self.doc.createTextNode(text)
elem.appendChild(text)
def addLabel(self, text, name=None):
"""Add a single line text, mainly useful as label before element"""
elem = self.__createElem('label', name, self.currentLayout)
elem.setAttribute('value', text)
def addString(self, name=None, value=None):
"""Add a string box"""
elem = self.__createElem('string', name, self.currentLayout)
if value:
elem.setAttribute('value', value)
def addPassword(self, name=None, value=None):
"""Add a password box"""
elem = self.__createElem('password', name, self.currentLayout)
if value:
elem.setAttribute('value', value)
def addList(self, options, name=None, value=None):
"""Add a list of choices"""
assert (options)
elem = self.__createElem('list', name, self.currentLayout)
self.addOptions(options, elem)
if value:
elem.setAttribute('value', value)
def addElement(self, type, name = None, content = None, value = None, options = None):
"""Convenience method to add element, the params correspond to the ones in addSomething methods"""
if type == 'empty':
self.addEmpty(name)
elif type == 'text':
assert(content)
self.addText(content, name)
elif type == 'label':
assert(value)
elif type == 'string':
self.addString(name, value)
elif type == 'password':
self.addPassword(name, value)
elif type == 'list':
self.addList(options, name, value)
def addOptions(self, options, parent):
"""Add options to a multi-values element (e.g. list)
@param parent: multi-values element"""
for option in options:
opt = self.doc.createElement('option')
opt.setAttribute('value', option)
parent.appendChild(opt)
def toXml(self):
"""return the XML representation of the panel"""
return self.doc.toxml()