Mercurial > libervia-backend
annotate src/tools/xml_tools.py @ 362:208107419b17
Quiz game: buzzer, timer, answer management
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 12 Jun 2011 22:34:15 +0200 |
| parents | e04ccf122bb6 |
| children | cf005701624b |
| rev | line source |
|---|---|
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1 #!/usr/bin/python |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 """ |
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5 SAT: a jabber client |
| 228 | 6 Copyright (C) 2009, 2010, 2011 Jérôme Poisson (goffi@goffi.org) |
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7 |
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8 This program is free software: you can redistribute it and/or modify |
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9 it under the terms of the GNU General Public License as published by |
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10 the Free Software Foundation, either version 3 of the License, or |
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11 (at your option) any later version. |
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12 |
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13 This program is distributed in the hope that it will be useful, |
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 GNU General Public License for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with this program. If not, see <http://www.gnu.org/licenses/>. |
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20 """ |
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21 |
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22 from logging import debug, info, error |
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23 from xml.dom import minidom |
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24 from wokkel import data_form |
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25 import pdb |
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26 from twisted.words.xish import domish |
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27 |
| 102 | 28 """This library help manage XML used in SàT (parameters, registration, etc) """ |
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29 |
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30 |
| 102 | 31 def dataForm2xml(form): |
| 32 """Take a data form (xep-0004, Wokkel's implementation) and convert it to a SàT xml""" | |
| 33 | |
| 105 | 34 form_ui = XMLUI("form", "vertical") |
| 104 | 35 |
| 102 | 36 if form.instructions: |
| 105 | 37 form_ui.addText('\n'.join(form.instructions), 'instructions') |
| 103 | 38 |
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39 labels = filter(lambda field:field.label,form.fieldList) |
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40 if labels: |
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41 #if there is no label, we don't need to use pairs |
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42 form_ui.changeLayout("pairs") |
| 103 | 43 |
| 102 | 44 for field in form.fieldList: |
| 45 if field.fieldType == 'fixed': | |
| 46 __field_type = 'text' | |
| 47 elif field.fieldType == 'text-single': | |
| 48 __field_type = "string" | |
| 49 elif field.fieldType == 'text-private': | |
| 50 __field_type = "password" | |
| 51 elif field.fieldType == 'list-single': | |
| 52 __field_type = "list" | |
| 53 else: | |
| 54 error (u"FIXME FIXME FIXME: Type [%s] is not managed yet by SàT" % field.fieldType) | |
| 55 __field_type = "string" | |
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56 |
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57 if labels: |
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58 if field.label: |
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59 form_ui.addLabel(field.label) |
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60 else: |
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61 form_ui.addEmpty() |
| 103 | 62 |
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63 elem = form_ui.addElement(__field_type, field.var, field.value, [option.value for option in field.options]) |
| 105 | 64 return form_ui.toXml() |
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65 |
| 102 | 66 def tupleList2dataForm(values): |
| 67 """convert a list of tuples (name,value) to a wokkel submit data form""" | |
| 68 form = data_form.Form('submit') | |
| 69 for value in values: | |
| 70 field = data_form.Field(var=value[0], value=value[1]) | |
| 71 form.addField(field) | |
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72 |
| 102 | 73 return form |
| 103 | 74 |
| 105 | 75 def paramsXml2xmlUI(xml): |
| 76 """Convert the xml for parameter to a SàT XML User Interface""" | |
| 214 | 77 params_doc = minidom.parseString(xml.encode('utf-8')) |
| 105 | 78 top = params_doc.documentElement |
| 79 if top.nodeName != 'params': | |
| 80 error(_('INTERNAL ERROR: parameters xml not valid')) | |
| 81 assert(False) | |
| 82 param_ui = XMLUI("param", "tabs") | |
| 83 for category in top.getElementsByTagName("category"): | |
| 84 name = category.getAttribute('name') | |
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85 label = category.getAttribute('label') |
| 105 | 86 if not name: |
| 87 error(_('INTERNAL ERROR: params categories must have a name')) | |
| 88 assert(False) | |
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89 param_ui.addCategory(name, 'pairs', label=label) |
| 105 | 90 for param in category.getElementsByTagName("param"): |
| 91 name = param.getAttribute('name') | |
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92 label = param.getAttribute('label') |
| 105 | 93 if not name: |
| 94 error(_('INTERNAL ERROR: params must have a name')) | |
| 95 assert(False) | |
| 96 type = param.getAttribute('type') | |
| 97 value = param.getAttribute('value') or None | |
| 106 | 98 callback_id = param.getAttribute('callback_id') or None |
| 99 if type == "button": | |
| 100 param_ui.addEmpty() | |
| 101 else: | |
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102 param_ui.addLabel(label or name) |
| 106 | 103 param_ui.addElement(name=name, type=type, value=value, callback_id=callback_id) |
| 105 | 104 |
| 105 return param_ui.toXml() | |
| 106 | |
| 107 | |
| 108 | |
| 109 | |
| 103 | 110 class XMLUI: |
| 111 """This class is used to create a user interface (form/window/parameters/etc) using SàT XML""" | |
| 112 | |
| 107 | 113 def __init__(self, panel_type, layout="vertical", title=None): |
| 103 | 114 """Init SàT XML Panel |
| 115 @param panel_type: one of | |
| 116 - window (new window) | |
| 117 - form (formulaire, depend of the frontend, usually a panel with cancel/submit buttons) | |
| 118 - param (parameters, presentatio depend of the frontend) | |
| 119 @param layout: disposition of elements, one of: | |
| 107 | 120 - vertical: elements are disposed up to bottom |
| 121 - horizontal: elements are disposed left to right | |
| 122 - pairs: elements come on two aligned columns | |
| 103 | 123 (usually one for a label, the next for the element) |
| 107 | 124 - tabs: elemens are in categories with tabs (notebook) |
| 125 @param title: title or default if None | |
| 103 | 126 """ |
| 127 if not panel_type in ['window', 'form', 'param']: | |
| 128 error(_("Unknown panel type [%s]") % panel_type) | |
| 129 assert(False) | |
| 130 self.type = panel_type | |
| 131 impl = minidom.getDOMImplementation() | |
| 132 | |
| 133 self.doc = impl.createDocument(None, "sat_xmlui", None) | |
| 134 top_element = self.doc.documentElement | |
| 135 top_element.setAttribute("type", panel_type) | |
| 107 | 136 if title: |
| 137 top_element.setAttribute("title", title) | |
| 104 | 138 self.parentTabsLayout = None #used only we have 'tabs' layout |
| 139 self.currentCategory = None #used only we have 'tabs' layout | |
| 140 self.changeLayout(layout) | |
| 103 | 141 |
| 142 def __del__(self): | |
| 143 self.doc.unlink() | |
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144 |
| 103 | 145 def __createLayout(self, layout, parent=None): |
| 146 """Create a layout element | |
| 147 @param type: layout type (cf init doc) | |
| 148 @parent: parent element or None | |
| 149 """ | |
| 104 | 150 if not layout in ['vertical', 'horizontal', 'pairs', 'tabs']: |
| 103 | 151 error (_("Unknown layout type [%s]") % layout) |
| 152 assert (False) | |
| 153 layout_elt = self.doc.createElement('layout') | |
| 154 layout_elt.setAttribute('type',layout) | |
| 155 if parent != None: | |
| 156 parent.appendChild(layout_elt) | |
| 157 return layout_elt | |
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158 |
| 103 | 159 def __createElem(self, type, name=None, parent = None): |
| 160 """Create an element | |
| 161 @param type: one of | |
| 162 - empty: empty element (usefull to skip something in a layout, e.g. skip first element in a PAIRS layout) | |
| 163 - text: text to be displayed in an multi-line area, e.g. instructions | |
| 164 @param name: name of the element or None | |
| 165 @param parent: parent element or None | |
| 166 """ | |
| 167 elem = self.doc.createElement('elem') | |
| 168 if name: | |
| 169 elem.setAttribute('name', name) | |
| 170 elem.setAttribute('type', type) | |
| 171 if parent != None: | |
| 172 parent.appendChild(elem) | |
| 173 return elem | |
| 174 | |
| 175 def changeLayout(self, layout): | |
| 176 """Change the current layout""" | |
| 104 | 177 self.currentLayout = self.__createLayout(layout, self.currentCategory if self.currentCategory else self.doc.documentElement) |
| 178 if layout == "tabs": | |
| 179 self.parentTabsLayout = self.currentLayout | |
| 103 | 180 |
| 181 | |
| 182 def addEmpty(self, name=None): | |
| 183 """Add a multi-lines text""" | |
| 184 elem = self.__createElem('empty', name, self.currentLayout) | |
| 185 | |
| 186 def addText(self, text, name=None): | |
| 187 """Add a multi-lines text""" | |
| 188 elem = self.__createElem('text', name, self.currentLayout) | |
| 189 text = self.doc.createTextNode(text) | |
| 190 elem.appendChild(text) | |
| 191 | |
| 192 def addLabel(self, text, name=None): | |
| 193 """Add a single line text, mainly useful as label before element""" | |
| 194 elem = self.__createElem('label', name, self.currentLayout) | |
| 195 elem.setAttribute('value', text) | |
| 196 | |
| 197 def addString(self, name=None, value=None): | |
| 198 """Add a string box""" | |
| 199 elem = self.__createElem('string', name, self.currentLayout) | |
| 200 if value: | |
| 201 elem.setAttribute('value', value) | |
| 202 | |
| 203 def addPassword(self, name=None, value=None): | |
| 204 """Add a password box""" | |
| 205 elem = self.__createElem('password', name, self.currentLayout) | |
| 206 if value: | |
| 207 elem.setAttribute('value', value) | |
| 208 | |
| 107 | 209 def addTextBox(self, name=None, value=None): |
| 210 """Add a string box""" | |
| 211 elem = self.__createElem('textbox', name, self.currentLayout) | |
| 212 if value: | |
| 213 elem.setAttribute('value', value) | |
| 214 | |
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215 def addBool(self, name=None, value="true"): |
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216 """Add a string box""" |
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217 assert value in ["true","false"] |
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218 elem = self.__createElem('bool', name, self.currentLayout) |
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219 elem.setAttribute('value', value) |
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220 |
| 107 | 221 def addList(self, options, name=None, value=None, style=set()): |
| 103 | 222 """Add a list of choices""" |
| 107 | 223 styles = set(style) |
| 103 | 224 assert (options) |
| 107 | 225 assert (styles.issubset(['multi'])) |
| 103 | 226 elem = self.__createElem('list', name, self.currentLayout) |
| 227 self.addOptions(options, elem) | |
| 228 if value: | |
| 229 elem.setAttribute('value', value) | |
| 107 | 230 for style in styles: |
| 231 elem.setAttribute(style, 'yes') | |
| 105 | 232 |
| 107 | 233 def addButton(self, callback_id, name, value, fields_back=[]): |
| 105 | 234 """Add a button |
| 235 @param callback: callback which will be called if button is pressed | |
| 106 | 236 @param name: name |
| 107 | 237 @param value: label of the button |
| 238 @fields_back: list of names of field to give back when pushing the button""" | |
| 105 | 239 elem = self.__createElem('button', name, self.currentLayout) |
| 106 | 240 elem.setAttribute('callback_id', callback_id) |
| 107 | 241 elem.setAttribute('value', value) |
| 242 for field in fields_back: | |
| 243 fback_el = self.doc.createElement('field_back') | |
| 244 fback_el.setAttribute('name', field) | |
| 245 elem.appendChild(fback_el) | |
| 246 | |
| 105 | 247 |
| 103 | 248 |
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249 def addElement(self, type, name = None, value = None, options = None, callback_id = None): |
| 103 | 250 """Convenience method to add element, the params correspond to the ones in addSomething methods""" |
| 251 if type == 'empty': | |
| 252 self.addEmpty(name) | |
| 253 elif type == 'text': | |
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254 assert(value!=None) |
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255 self.addText(value, name) |
| 103 | 256 elif type == 'label': |
| 257 assert(value) | |
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258 self.addLabel(value) |
| 103 | 259 elif type == 'string': |
| 260 self.addString(name, value) | |
| 261 elif type == 'password': | |
| 262 self.addPassword(name, value) | |
| 107 | 263 elif type == 'textbox': |
| 264 self.addTextBox(name, value) | |
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265 elif type == 'bool': |
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266 if not value: |
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267 value = "true" |
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268 self.addBool(name, value) |
| 103 | 269 elif type == 'list': |
| 270 self.addList(options, name, value) | |
| 105 | 271 elif type == 'button': |
| 106 | 272 assert(callback_id and value) |
| 273 self.addButton(callback_id, name, value) | |
| 103 | 274 |
| 275 def addOptions(self, options, parent): | |
| 276 """Add options to a multi-values element (e.g. list) | |
| 277 @param parent: multi-values element""" | |
| 278 for option in options: | |
| 279 opt = self.doc.createElement('option') | |
| 280 opt.setAttribute('value', option) | |
| 281 parent.appendChild(opt) | |
| 282 | |
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283 def addCategory(self, name, layout, label=None): |
| 104 | 284 """Add a category to current layout (must be a tabs layout)""" |
| 285 assert(layout != 'tabs') | |
| 286 if not self.parentTabsLayout: | |
| 287 error(_("Trying to add a category without parent tabs layout")) | |
| 288 assert(False) | |
| 289 if self.parentTabsLayout.getAttribute('type') != 'tabs': | |
| 290 error(_("parent layout of a category is not tabs")) | |
| 291 assert(False) | |
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292 |
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293 if not label: |
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294 label = name |
| 104 | 295 self.currentCategory = cat = self.doc.createElement('category') |
| 296 cat.setAttribute('name', name) | |
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297 cat.setAttribute('label', label) |
| 104 | 298 self.changeLayout(layout) |
| 299 self.parentTabsLayout.appendChild(cat) | |
| 300 | |
| 103 | 301 def toXml(self): |
| 302 """return the XML representation of the panel""" | |
| 303 return self.doc.toxml() | |
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304 |
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305 |
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306 |
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307 class ElementParser(object): |
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308 """callable class to parse XML string into Element |
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309 Found at http://stackoverflow.com/questions/2093400/how-to-create-twisted-words-xish-domish-element-entirely-from-raw-xml/2095942#2095942 |
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310 (c) Karl Anderson""" |
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311 |
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312 def __call__(self, s): |
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313 self.result = None |
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314 def onStart(el): |
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315 self.result = el |
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316 def onEnd(): |
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317 pass |
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318 def onElement(el): |
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319 self.result.addChild(el) |
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320 |
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321 parser = domish.elementStream() |
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322 parser.DocumentStartEvent = onStart |
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323 parser.ElementEvent = onElement |
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324 parser.DocumentEndEvent = onEnd |
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325 tmp = domish.Element(("", "s")) |
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326 tmp.addRawXml(s.replace('\n','').replace('\t','')) |
| 304 | 327 parser.parse(tmp.toXml().encode('utf-8')) |
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328 return self.result.firstChildElement() |