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