lib/python/Screens/Wizard.py

   1 from Screen import Screen
   2
   3 import string
   4
   5 from Screens.HelpMenu import HelpableScreen
   6 from Components.Label import Label
   7 from Components.Slider import Slider
   8 from Components.ActionMap import HelpableActionMap, NumberActionMap
   9 from Components.Pixmap import *
  10 from Components.MenuList import MenuList
  11 from Components.ConfigList import ConfigList
  12
  13 from xml.sax import make_parser
  14 from xml.sax.handler import ContentHandler
  15
  16 class Wizard(Screen, HelpableScreen):
  17
  18         class parseWizard(ContentHandler):
  19                 def __init__(self, wizard):
  20                         self.isPointsElement, self.isReboundsElement = 0, 0
  21                         self.wizard = wizard
  22                         self.currContent = ""
  23                         self.lastStep = 0
  24
  25                 def startElement(self, name, attrs):
  26                         print "startElement", name
  27                         self.currContent = name
  28                         if (name == "step"):
  29                                 self.lastStep += 1
  30                                 if attrs.has_key('id'):
  31                                         id = str(attrs.get('id'))
  32                                 else:
  33                                         id = ""
  34                                 self.wizard[self.lastStep] = {"id": id, "condition": "", "text": "", "list": [], "config": {"screen": None, "args": None, "type": "" }, "code": "", "codeafter": ""}
  35                         elif (name == "text"):
  36                                 self.wizard[self.lastStep]["text"] = string.replace(str(attrs.get('value')), "\\n", "\n")
  37                         elif (name == "listentry"):
  38                                 self.wizard[self.lastStep]["list"].append((str(attrs.get('caption')), str(attrs.get('step'))))
  39                         elif (name == "config"):
  40                                 exec "from Screens." + str(attrs.get('module')) + " import *"
  41                                 self.wizard[self.lastStep]["config"]["screen"] = eval(str(attrs.get('screen')))
  42                                 if (attrs.has_key('args')):
  43                                         print "has args"
  44                                         self.wizard[self.lastStep]["config"]["args"] = str(attrs.get('args'))
  45                                 self.wizard[self.lastStep]["config"]["type"] = str(attrs.get('type'))
  46                         elif (name == "code"):
  47                                 if attrs.has_key('pos') and str(attrs.get('pos')) == "after":
  48                                         self.codeafter = True
  49                                 else:
  50                                         self.codeafter = False
  51                         elif (name == "condition"):
  52                                 pass
  53                 def endElement(self, name):
  54                         self.currContent = ""
  55                         if name == 'code':
  56                                 if self.codeafter:
  57                                         self.wizard[self.lastStep]["codeafter"] = self.wizard[self.lastStep]["codeafter"].strip()
  58                                 else:
  59                                         self.wizard[self.lastStep]["code"] = self.wizard[self.lastStep]["code"].strip()
  60                         elif name == 'condition':
  61                                 self.wizard[self.lastStep]["condition"] = self.wizard[self.lastStep]["condition"].strip()
  62
  63                 def characters(self, ch):
  64                         if self.currContent == "code":
  65                                 if self.codeafter:
  66                                         self.wizard[self.lastStep]["codeafter"] = self.wizard[self.lastStep]["codeafter"] + ch
  67                                 else:
  68                                         self.wizard[self.lastStep]["code"] = self.wizard[self.lastStep]["code"] + ch
  69                         elif self.currContent == "condition":
  70                                  self.wizard[self.lastStep]["condition"] = self.wizard[self.lastStep]["condition"] + ch
  71         def __init__(self, session, showSteps = True, showStepSlider = True, showList = True, showConfig = True):
  72                 Screen.__init__(self, session)
  73                 HelpableScreen.__init__(self)
  74
  75                 self.wizard = {}
  76                 parser = make_parser()
  77                 print "Reading " + self.xmlfile
  78                 wizardHandler = self.parseWizard(self.wizard)
  79                 parser.setContentHandler(wizardHandler)
  80                 parser.parse('/usr/share/enigma2/' + self.xmlfile)
  81
  82                 self.showSteps = showSteps
  83                 self.showStepSlider = showStepSlider
  84                 self.showList = showList
  85                 self.showConfig = showConfig
  86
  87                 self.numSteps = len(self.wizard)
  88                 self.currStep = 1
  89
  90                 self["text"] = Label()
  91
  92                 if showConfig:
  93                         self["config"] = ConfigList([])
  94
  95                 if self.showSteps:
  96                         self["step"] = Label()
  97
  98                 if self.showStepSlider:
  99                         self["stepslider"] = Slider(1, self.numSteps)
 100
 101                 if self.showList:
 102                         self.list = []
 103                         self["list"] = MenuList(self.list)
 104
 105                 self.onShown.append(self.updateValues)
 106
 107                 self["actions"] = NumberActionMap(["WizardActions", "NumberActions"],
 108                 {
 109                         "ok": self.ok,
 110                         "back": self.back,
 111                         "left": self.left,
 112                         "right": self.right,
 113                         "up": self.up,
 114                         "down": self.down,
 115                         "1": self.keyNumberGlobal,
 116                         "2": self.keyNumberGlobal,
 117                         "3": self.keyNumberGlobal,
 118                         "4": self.keyNumberGlobal,
 119                         "5": self.keyNumberGlobal,
 120                         "6": self.keyNumberGlobal,
 121                         "7": self.keyNumberGlobal,
 122                         "8": self.keyNumberGlobal,
 123                         "9": self.keyNumberGlobal,
 124                         "0": self.keyNumberGlobal
 125                 }, -1)
 126
 127         def back(self):
 128                 self.currStep -= 1
 129                 if self.currStep < 1:
 130                         self.currStep = 1
 131                 self.updateValues()
 132
 133         def markDone(self):
 134                 pass
 135
 136         def getStepWithID(self, id):
 137                 count = 0
 138                 for x in self.wizard:
 139                         if self.wizard[x]["id"] == id:
 140                                 return count
 141                         count += 1
 142                 return 0
 143
 144         def ok(self):
 145                 print "OK"
 146                 if self.showConfig:
 147                         if (self.wizard[self.currStep]["config"]["screen"] != None):
 148                                 try: # don't die, if no run() is available
 149                                         self.configInstance.run()
 150                                 except:
 151                                         print "Failed to run configInstance"
 152
 153                 if self.showList:
 154                         if (len(self.wizard[self.currStep]["list"]) > 0):
 155                                 nextStep = self.wizard[self.currStep]["list"][self["list"].l.getCurrentSelectionIndex()][1]
 156                                 self.currStep = self.getStepWithID(nextStep)
 157
 158                 if (self.currStep == self.numSteps): # wizard finished
 159                         self.markDone()
 160                         self.session.close()
 161                 else:
 162                         self.runCode(self.wizard[self.currStep]["codeafter"])
 163                         self.currStep += 1
 164                         self.updateValues()
 165
 166                 print "Now: " + str(self.currStep)
 167
 168         def keyNumberGlobal(self, number):
 169                 if (self.wizard[self.currStep]["config"]["screen"] != None):
 170                         self.configInstance.keyNumberGlobal(number)
 171
 172         def left(self):
 173                 if (self.wizard[self.currStep]["config"]["screen"] != None):
 174                         self.configInstance.keyLeft()
 175                 print "left"
 176
 177         def right(self):
 178                 if (self.wizard[self.currStep]["config"]["screen"] != None):
 179                         self.configInstance.keyRight()
 180                 print "right"
 181
 182         def up(self):
 183                 if (self.showConfig and self.wizard[self.currStep]["config"]["screen"] != None):
 184                                 self["config"].instance.moveSelection(self["config"].instance.moveUp)
 185                 elif (self.showList and len(self.wizard[self.currStep]["list"]) > 0):
 186                         self["list"].instance.moveSelection(self["list"].instance.moveUp)
 187                 print "up"
 188
 189         def down(self):
 190                 if (self.showConfig and self.wizard[self.currStep]["config"]["screen"] != None):
 191                         self["config"].instance.moveSelection(self["config"].instance.moveDown)
 192                 elif (self.showList and len(self.wizard[self.currStep]["list"]) > 0):
 193                         self["list"].instance.moveSelection(self["list"].instance.moveDown)
 194                 print "down"
 195
 196         def runCode(self, code):
 197                 if code != "":
 198                         print "code", code
 199                         exec(code)
 200
 201         def updateValues(self):
 202                 print "Updating values in step " + str(self.currStep)
 203
 204                 self.condition = True
 205                 exec (self.wizard[self.currStep]["condition"])
 206                 if self.condition:
 207                         if self.showSteps:
 208                                 self["step"].setText(_("Step ") + str(self.currStep) + "/" + str(self.numSteps))
 209                         if self.showStepSlider:
 210                                 self["stepslider"].setValue(self.currStep)
 211
 212                         print "wizard text", _(self.wizard[self.currStep]["text"])
 213                         self["text"].setText(_(self.wizard[self.currStep]["text"]))
 214
 215                         self.runCode(self.wizard[self.currStep]["code"])
 216
 217                         if self.showList:
 218                                 self["list"].instance.setZPosition(1)
 219                                 self.list = []
 220                                 if (len(self.wizard[self.currStep]["list"]) > 0):
 221                                         self["list"].instance.setZPosition(2)
 222                                         for x in self.wizard[self.currStep]["list"]:
 223                                                 self.list.append((_(x[0]), None))
 224                                 self["list"].l.setList(self.list)
 225
 226                         if self.showConfig:
 227                                 self["config"].instance.setZPosition(1)
 228                                 if (self.wizard[self.currStep]["config"]["screen"] != None):
 229                                         if self.wizard[self.currStep]["config"]["type"] == "standalone":
 230                                                 print "Type is standalone"
 231                                                 self.session.openWithCallback(self.ok, self.wizard[self.currStep]["config"]["screen"])
 232                                         else:
 233                                                 self["config"].instance.setZPosition(2)
 234                                                 print "wizard screen", self.wizard[self.currStep]["config"]["screen"]
 235                                                 if self.wizard[self.currStep]["config"]["args"] == None:
 236                                                         self.configInstance = self.session.instantiateDialog(self.wizard[self.currStep]["config"]["screen"])
 237                                                 else:
 238                                                         self.configInstance = self.session.instantiateDialog(self.wizard[self.currStep]["config"]["screen"], eval(self.wizard[self.currStep]["config"]["args"]))
 239                                                 self["config"].l.setList(self.configInstance["config"].list)
 240                                                 self.configInstance["config"] = self["config"]
 241                                 else:
 242                                         self["config"].l.setList([])
 243                 else: # condition false
 244                                 self.currStep += 1
 245                                 self.updateValues()
 246
 247 class WizardManager:
 248         def __init__(self):
 249                 self.wizards = []
 250
 251         def registerWizard(self, wizard, precondition):
 252                 self.wizards.append((wizard, precondition))
 253
 254         def getWizards(self):
 255                 list = []
 256                 for x in self.wizards:
 257                         if x[1] == 1: # precondition
 258                                 list.append(x[0])
 259                 return list
 260
 261 wizardManager = WizardManager()