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