code.vuplus.com Git - vuplus_dvbapp/blob - lib/python/Components/config.py

   1 from enigma import getPrevAsciiCode
   2 from Tools.NumericalTextInput import NumericalTextInput
   3 from Tools.Directories import resolveFilename, SCOPE_CONFIG, fileExists
   4 from Components.Harddisk import harddiskmanager
   5 from copy import copy as copy_copy
   6 from os import path as os_path
   7 from time import localtime, strftime
   8
   9 # ConfigElement, the base class of all ConfigElements.
  10
  11 # it stores:
  12 #   value    the current value, usefully encoded.
  13 #            usually a property which retrieves _value,
  14 #            and maybe does some reformatting
  15 #   _value   the value as it's going to be saved in the configfile,
  16 #            though still in non-string form.
  17 #            this is the object which is actually worked on.
  18 #   default  the initial value. If _value is equal to default,
  19 #            it will not be stored in the config file
  20 #   saved_value is a text representation of _value, stored in the config file
  21 #
  22 # and has (at least) the following methods:
  23 #   save()   stores _value into saved_value,
  24 #            (or stores 'None' if it should not be stored)
  25 #   load()   loads _value from saved_value, or loads
  26 #            the default if saved_value is 'None' (default)
  27 #            or invalid.
  28 #
  29 class ConfigElement(object):
  30         def __init__(self):
  31                 self.saved_value = None
  32                 self.last_value = None
  33                 self.save_disabled = False
  34                 self.__notifiers = None
  35                 self.__notifiers_final = None
  36                 self.enabled = True
  37                 self.callNotifiersOnSaveAndCancel = False
  38
  39         def getNotifiers(self):
  40                 if self.__notifiers is None:
  41                         self.__notifiers = [ ]
  42                 return self.__notifiers
  43
  44         def setNotifiers(self, val):
  45                 self.__notifiers = val
  46
  47         notifiers = property(getNotifiers, setNotifiers)
  48
  49         def getNotifiersFinal(self):
  50                 if self.__notifiers_final is None:
  51                         self.__notifiers_final = [ ]
  52                 return self.__notifiers_final
  53
  54         def setNotifiersFinal(self, val):
  55                 self.__notifiers_final = val
  56
  57         notifiers_final = property(getNotifiersFinal, setNotifiersFinal)
  58
  59         # you need to override this to do input validation
  60         def setValue(self, value):
  61                 self._value = value
  62                 self.changed()
  63
  64         def getValue(self):
  65                 return self._value
  66
  67         value = property(getValue, setValue)
  68
  69         # you need to override this if self.value is not a string
  70         def fromstring(self, value):
  71                 return value
  72
  73         # you can overide this for fancy default handling
  74         def load(self):
  75                 sv = self.saved_value
  76                 if sv is None:
  77                         self.value = self.default
  78                 else:
  79                         self.value = self.fromstring(sv)
  80
  81         def tostring(self, value):
  82                 return str(value)
  83
  84         # you need to override this if str(self.value) doesn't work
  85         def save(self):
  86                 if self.save_disabled or self.value == self.default:
  87                         self.saved_value = None
  88                 else:
  89                         self.saved_value = self.tostring(self.value)
  90                 if self.callNotifiersOnSaveAndCancel:
  91                         self.changed()
  92
  93         def cancel(self):
  94                 self.load()
  95                 if self.callNotifiersOnSaveAndCancel:
  96                         self.changed()
  97
  98         def isChanged(self):
  99                 sv = self.saved_value
 100                 if sv is None and self.value == self.default:
 101                         return False
 102                 return self.tostring(self.value) != sv
 103
 104         def changed(self):
 105                 if self.__notifiers:
 106                         for x in self.notifiers:
 107                                 x(self)
 108
 109         def changedFinal(self):
 110                 if self.__notifiers_final:
 111                         for x in self.notifiers_final:
 112                                 x(self)
 113
 114         def addNotifier(self, notifier, initial_call = True, immediate_feedback = True):
 115                 assert callable(notifier), "notifiers must be callable"
 116                 if immediate_feedback:
 117                         self.notifiers.append(notifier)
 118                 else:
 119                         self.notifiers_final.append(notifier)
 120                 # CHECKME:
 121                 # do we want to call the notifier
 122                 #  - at all when adding it? (yes, though optional)
 123                 #  - when the default is active? (yes)
 124                 #  - when no value *yet* has been set,
 125                 #    because no config has ever been read (currently yes)
 126                 #    (though that's not so easy to detect.
 127                 #     the entry could just be new.)
 128                 if initial_call:
 129                         notifier(self)
 130
 131         def disableSave(self):
 132                 self.save_disabled = True
 133
 134         def __call__(self, selected):
 135                 return self.getMulti(selected)
 136
 137         def onSelect(self, session):
 138                 pass
 139
 140         def onDeselect(self, session):
 141                 if not self.last_value == self.value:
 142                         self.changedFinal()
 143                         self.last_value = self.value
 144
 145 KEY_LEFT = 0
 146 KEY_RIGHT = 1
 147 KEY_OK = 2
 148 KEY_DELETE = 3
 149 KEY_BACKSPACE = 4
 150 KEY_HOME = 5
 151 KEY_END = 6
 152 KEY_TOGGLEOW = 7
 153 KEY_ASCII = 8
 154 KEY_TIMEOUT = 9
 155 KEY_NUMBERS = range(12, 12+10)
 156 KEY_0 = 12
 157 KEY_9 = 12+9
 158
 159 def getKeyNumber(key):
 160         assert key in KEY_NUMBERS
 161         return key - KEY_0
 162
 163 class choicesList(object): # XXX: we might want a better name for this
 164         LIST_TYPE_LIST = 1
 165         LIST_TYPE_DICT = 2
 166
 167         def __init__(self, choices, type = None):
 168                 self.choices = choices
 169                 if type is None:
 170                         if isinstance(choices, list):
 171                                 self.type = choicesList.LIST_TYPE_LIST
 172                         elif isinstance(choices, dict):
 173                                 self.type = choicesList.LIST_TYPE_DICT
 174                         else:
 175                                 assert False, "choices must be dict or list!"
 176                 else:
 177                         self.type = type
 178
 179         def __list__(self):
 180                 if self.type == choicesList.LIST_TYPE_LIST:
 181                         ret = [not isinstance(x, tuple) and x or x[0] for x in self.choices]
 182                 else:
 183                         ret = self.choices.keys()
 184                 return ret or [""]
 185
 186         def __iter__(self):
 187                 if self.type == choicesList.LIST_TYPE_LIST:
 188                         ret = [not isinstance(x, tuple) and x or x[0] for x in self.choices]
 189                 else:
 190                         ret = self.choices
 191                 return iter(ret or [""])
 192
 193         def __len__(self):
 194                 return len(self.choices) or 1
 195
 196         def __getitem__(self, index):
 197                 if self.type == choicesList.LIST_TYPE_LIST:
 198                         ret = self.choices[index]
 199                         if isinstance(ret, tuple):
 200                                 ret = ret[0]
 201                         return ret
 202                 return self.choices.keys()[index]
 203
 204         def index(self, value):
 205                 return self.__list__().index(value)
 206
 207         def __setitem__(self, index, value):
 208                 if self.type == choicesList.LIST_TYPE_LIST:
 209                         orig = self.choices[index]
 210                         if isinstance(orig, tuple):
 211                                 self.choices[index] = (value, orig[1])
 212                         else:
 213                                 self.choices[index] = value
 214                 else:
 215                         key = self.choices.keys()[index]
 216                         orig = self.choices[key]
 217                         del self.choices[key]
 218                         self.choices[value] = orig
 219
 220         def default(self):
 221                 choices = self.choices
 222                 if not choices:
 223                         return ""
 224                 if self.type is choicesList.LIST_TYPE_LIST:
 225                         default = choices[0]
 226                         if isinstance(default, tuple):
 227                                 default = default[0]
 228                 else:
 229                         default = choices.keys()[0]
 230                 return default
 231
 232 class descriptionList(choicesList): # XXX: we might want a better name for this
 233         def __list__(self):
 234                 if self.type == choicesList.LIST_TYPE_LIST:
 235                         ret = [not isinstance(x, tuple) and x or x[1] for x in self.choices]
 236                 else:
 237                         ret = self.choices.values()
 238                 return ret or [""]
 239
 240         def __iter__(self):
 241                 return iter(self.__list__())
 242
 243         def __getitem__(self, index):
 244                 if self.type == choicesList.LIST_TYPE_LIST:
 245                         for x in self.choices:
 246                                 if isinstance(x, tuple):
 247                                         if x[0] == index:
 248                                                 return str(x[1])
 249                                 elif x == index:
 250                                         return str(x)
 251                         return str(index) # Fallback!
 252                 else:
 253                         return str(self.choices.get(index, ""))
 254
 255         def __setitem__(self, index, value):
 256                 if self.type == choicesList.LIST_TYPE_LIST:
 257                         i = self.index(index)
 258                         orig = self.choices[i]
 259                         if isinstance(orig, tuple):
 260                                 self.choices[i] = (orig[0], value)
 261                         else:
 262                                 self.choices[i] = value
 263                 else:
 264                         self.choices[index] = value
 265
 266 #
 267 # ConfigSelection is a "one of.."-type.
 268 # it has the "choices", usually a list, which contains
 269 # (id, desc)-tuples (or just only the ids, in case the id
 270 # will be used as description)
 271 #
 272 # all ids MUST be plain strings.
 273 #
 274 class ConfigSelection(ConfigElement):
 275         def __init__(self, choices, default = None):
 276                 ConfigElement.__init__(self)
 277                 self.choices = choicesList(choices)
 278
 279                 if default is None:
 280                         default = self.choices.default()
 281
 282                 self._descr = None
 283                 self.default = self._value = self.last_value = default
 284
 285         def setChoices(self, choices, default = None):
 286                 self.choices = choicesList(choices)
 287
 288                 if default is None:
 289                         default = self.choices.default()
 290                 self.default = default
 291
 292                 if self.value not in self.choices:
 293                         self.value = default
 294
 295         def setValue(self, value):
 296                 if value in self.choices:
 297                         self._value = value
 298                 else:
 299                         self._value = self.default
 300                 self._descr = None
 301                 self.changed()
 302
 303         def tostring(self, val):
 304                 return val
 305
 306         def getValue(self):
 307                 return self._value
 308
 309         def setCurrentText(self, text):
 310                 i = self.choices.index(self.value)
 311                 self.choices[i] = text
 312                 self._descr = self.description[text] = text
 313                 self._value = text
 314
 315         value = property(getValue, setValue)
 316
 317         def getIndex(self):
 318                 return self.choices.index(self.value)
 319
 320         index = property(getIndex)
 321
 322         # GUI
 323         def handleKey(self, key):
 324                 nchoices = len(self.choices)
 325                 i = self.choices.index(self.value)
 326                 if key == KEY_LEFT:
 327                         self.value = self.choices[(i + nchoices - 1) % nchoices]
 328                 elif key == KEY_RIGHT:
 329                         self.value = self.choices[(i + 1) % nchoices]
 330                 elif key == KEY_HOME:
 331                         self.value = self.choices[0]
 332                 elif key == KEY_END:
 333                         self.value = self.choices[nchoices - 1]
 334
 335         def selectNext(self):
 336                 nchoices = len(self.choices)
 337                 i = self.choices.index(self.value)
 338                 self.value = self.choices[(i + 1) % nchoices]
 339
 340         def getText(self):
 341                 if self._descr is not None:
 342                         return self._descr
 343                 descr = self._descr = self.description[self.value]
 344                 if descr:
 345                         return _(descr)
 346                 return descr
 347
 348         def getMulti(self, selected):
 349                 if self._descr is not None:
 350                         descr = self._descr
 351                 else:
 352                         descr = self._descr = self.description[self.value]
 353                 if descr:
 354                         return ("text", _(descr))
 355                 return ("text", descr)
 356
 357         # HTML
 358         def getHTML(self, id):
 359                 res = ""
 360                 for v in self.choices:
 361                         descr = self.description[v]
 362                         if self.value == v:
 363                                 checked = 'checked="checked" '
 364                         else:
 365                                 checked = ''
 366                         res += '<input type="radio" name="' + id + '" ' + checked + 'value="' + v + '">' + descr + "</input></br>\n"
 367                 return res;
 368
 369         def unsafeAssign(self, value):
 370                 # setValue does check if value is in choices. This is safe enough.
 371                 self.value = value
 372
 373         description = property(lambda self: descriptionList(self.choices.choices, self.choices.type))
 374
 375 # a binary decision.
 376 #
 377 # several customized versions exist for different
 378 # descriptions.
 379 #
 380 boolean_descriptions = {False: "false", True: "true"}
 381 class ConfigBoolean(ConfigElement):
 382         def __init__(self, default = False, descriptions = boolean_descriptions):
 383                 ConfigElement.__init__(self)
 384                 self.descriptions = descriptions
 385                 self.value = self.last_value = self.default = default
 386
 387         def handleKey(self, key):
 388                 if key in (KEY_LEFT, KEY_RIGHT):
 389                         self.value = not self.value
 390                 elif key == KEY_HOME:
 391                         self.value = False
 392                 elif key == KEY_END:
 393                         self.value = True
 394
 395         def getText(self):
 396                 descr = self.descriptions[self.value]
 397                 if descr:
 398                         return _(descr)
 399                 return descr
 400
 401         def getMulti(self, selected):
 402                 descr = self.descriptions[self.value]
 403                 if descr:
 404                         return ("text", _(descr))
 405                 return ("text", descr)
 406
 407         def tostring(self, value):
 408                 if not value:
 409                         return "false"
 410                 else:
 411                         return "true"
 412
 413         def fromstring(self, val):
 414                 if val == "true":
 415                         return True
 416                 else:
 417                         return False
 418
 419         def getHTML(self, id):
 420                 if self.value:
 421                         checked = ' checked="checked"'
 422                 else:
 423                         checked = ''
 424                 return '<input type="checkbox" name="' + id + '" value="1" ' + checked + " />"
 425
 426         # this is FLAWED. and must be fixed.
 427         def unsafeAssign(self, value):
 428                 if value == "1":
 429                         self.value = True
 430                 else:
 431                         self.value = False
 432
 433         def onDeselect(self, session):
 434                 if not self.last_value == self.value:
 435                         self.changedFinal()
 436                         self.last_value = self.value
 437
 438 yes_no_descriptions = {False: _("no"), True: _("yes")}
 439 class ConfigYesNo(ConfigBoolean):
 440         def __init__(self, default = False):
 441                 ConfigBoolean.__init__(self, default = default, descriptions = yes_no_descriptions)
 442
 443 on_off_descriptions = {False: _("off"), True: _("on")}
 444 class ConfigOnOff(ConfigBoolean):
 445         def __init__(self, default = False):
 446                 ConfigBoolean.__init__(self, default = default, descriptions = on_off_descriptions)
 447
 448 enable_disable_descriptions = {False: _("disable"), True: _("enable")}
 449 class ConfigEnableDisable(ConfigBoolean):
 450         def __init__(self, default = False):
 451                 ConfigBoolean.__init__(self, default = default, descriptions = enable_disable_descriptions)
 452
 453 class ConfigDateTime(ConfigElement):
 454         def __init__(self, default, formatstring, increment = 86400):
 455                 ConfigElement.__init__(self)
 456                 self.increment = increment
 457                 self.formatstring = formatstring
 458                 self.value = self.last_value = self.default = int(default)
 459
 460         def handleKey(self, key):
 461                 if key == KEY_LEFT:
 462                         self.value = self.value - self.increment
 463                 elif key == KEY_RIGHT:
 464                         self.value = self.value + self.increment
 465                 elif key == KEY_HOME or key == KEY_END:
 466                         self.value = self.default
 467
 468         def getText(self):
 469                 return strftime(self.formatstring, localtime(self.value))
 470
 471         def getMulti(self, selected):
 472                 return ("text", strftime(self.formatstring, localtime(self.value)))
 473
 474         def fromstring(self, val):
 475                 return int(val)
 476
 477 # *THE* mighty config element class
 478 #
 479 # allows you to store/edit a sequence of values.
 480 # can be used for IP-addresses, dates, plain integers, ...
 481 # several helper exist to ease this up a bit.
 482 #
 483 class ConfigSequence(ConfigElement):
 484         def __init__(self, seperator, limits, default, censor_char = ""):
 485                 ConfigElement.__init__(self)
 486                 assert isinstance(limits, list) and len(limits[0]) == 2, "limits must be [(min, max),...]-tuple-list"
 487                 assert censor_char == "" or len(censor_char) == 1, "censor char must be a single char (or \"\")"
 488                 #assert isinstance(default, list), "default must be a list"
 489                 #assert isinstance(default[0], int), "list must contain numbers"
 490                 #assert len(default) == len(limits), "length must match"
 491
 492                 self.marked_pos = 0
 493                 self.seperator = seperator
 494                 self.limits = limits
 495                 self.censor_char = censor_char
 496
 497                 self.last_value = self.default = default
 498                 self.value = copy_copy(default)
 499                 self.endNotifier = None
 500
 501         def validate(self):
 502                 max_pos = 0
 503                 num = 0
 504                 for i in self._value:
 505                         max_pos += len(str(self.limits[num][1]))
 506
 507                         if self._value[num] < self.limits[num][0]:
 508                                 self._value[num] = self.limits[num][0]
 509
 510                         if self._value[num] > self.limits[num][1]:
 511                                 self._value[num] = self.limits[num][1]
 512
 513                         num += 1
 514
 515                 if self.marked_pos >= max_pos:
 516                         if self.endNotifier:
 517                                 for x in self.endNotifier:
 518                                         x(self)
 519                         self.marked_pos = max_pos - 1
 520
 521                 if self.marked_pos < 0:
 522                         self.marked_pos = 0
 523
 524         def validatePos(self):
 525                 if self.marked_pos < 0:
 526                         self.marked_pos = 0
 527
 528                 total_len = sum([len(str(x[1])) for x in self.limits])
 529
 530                 if self.marked_pos >= total_len:
 531                         self.marked_pos = total_len - 1
 532
 533         def addEndNotifier(self, notifier):
 534                 if self.endNotifier is None:
 535                         self.endNotifier = []
 536                 self.endNotifier.append(notifier)
 537
 538         def handleKey(self, key):
 539                 if key == KEY_LEFT:
 540                         self.marked_pos -= 1
 541                         self.validatePos()
 542
 543                 elif key == KEY_RIGHT:
 544                         self.marked_pos += 1
 545                         self.validatePos()
 546
 547                 elif key == KEY_HOME:
 548                         self.marked_pos = 0
 549                         self.validatePos()
 550
 551                 elif key == KEY_END:
 552                         max_pos = 0
 553                         num = 0
 554                         for i in self._value:
 555                                 max_pos += len(str(self.limits[num][1]))
 556                                 num += 1
 557                         self.marked_pos = max_pos - 1
 558                         self.validatePos()
 559
 560                 elif key in KEY_NUMBERS or key == KEY_ASCII:
 561                         if key == KEY_ASCII:
 562                                 code = getPrevAsciiCode()
 563                                 if code < 48 or code > 57:
 564                                         return
 565                                 number = code - 48
 566                         else:
 567                                 number = getKeyNumber(key)
 568
 569                         block_len = [len(str(x[1])) for x in self.limits]
 570                         total_len = sum(block_len)
 571
 572                         pos = 0
 573                         blocknumber = 0
 574                         block_len_total = [0, ]
 575                         for x in block_len:
 576                                 pos += block_len[blocknumber]
 577                                 block_len_total.append(pos)
 578                                 if pos - 1 >= self.marked_pos:
 579                                         pass
 580                                 else:
 581                                         blocknumber += 1
 582
 583                         # length of numberblock
 584                         number_len = len(str(self.limits[blocknumber][1]))
 585
 586                         # position in the block
 587                         posinblock = self.marked_pos - block_len_total[blocknumber]
 588
 589                         oldvalue = self._value[blocknumber]
 590                         olddec = oldvalue % 10 ** (number_len - posinblock) - (oldvalue % 10 ** (number_len - posinblock - 1))
 591                         newvalue = oldvalue - olddec + (10 ** (number_len - posinblock - 1) * number)
 592
 593                         self._value[blocknumber] = newvalue
 594                         self.marked_pos += 1
 595
 596                         self.validate()
 597                         self.changed()
 598
 599         def genText(self):
 600                 value = ""
 601                 mPos = self.marked_pos
 602                 num = 0;
 603                 for i in self._value:
 604                         if value:       #fixme no heading separator possible
 605                                 value += self.seperator
 606                                 if mPos >= len(value) - 1:
 607                                         mPos += 1
 608                         if self.censor_char == "":
 609                                 value += ("%0" + str(len(str(self.limits[num][1]))) + "d") % i
 610                         else:
 611                                 value += (self.censor_char * len(str(self.limits[num][1])))
 612                         num += 1
 613                 return (value, mPos)
 614
 615         def getText(self):
 616                 (value, mPos) = self.genText()
 617                 return value
 618
 619         def getMulti(self, selected):
 620                 (value, mPos) = self.genText()
 621                         # only mark cursor when we are selected
 622                         # (this code is heavily ink optimized!)
 623                 if self.enabled:
 624                         return ("mtext"[1-selected:], value, [mPos])
 625                 else:
 626                         return ("text", value)
 627
 628         def tostring(self, val):
 629                 return self.seperator.join([self.saveSingle(x) for x in val])
 630
 631         def saveSingle(self, v):
 632                 return str(v)
 633
 634         def fromstring(self, value):
 635                 return [int(x) for x in value.split(self.seperator)]
 636
 637         def onDeselect(self, session):
 638                 if self.last_value != self._value:
 639                         self.changedFinal()
 640                         self.last_value = copy_copy(self._value)
 641
 642 ip_limits = [(0,255),(0,255),(0,255),(0,255)]
 643 class ConfigIP(ConfigSequence):
 644         def __init__(self, default, auto_jump = False):
 645                 ConfigSequence.__init__(self, seperator = ".", limits = ip_limits, default = default)
 646                 self.block_len = [len(str(x[1])) for x in self.limits]
 647                 self.marked_block = 0
 648                 self.overwrite = True
 649                 self.auto_jump = auto_jump
 650
 651         def handleKey(self, key):
 652                 if key == KEY_LEFT:
 653                         if self.marked_block > 0:
 654                                 self.marked_block -= 1
 655                         self.overwrite = True
 656
 657                 elif key == KEY_RIGHT:
 658                         if self.marked_block < len(self.limits)-1:
 659                                 self.marked_block += 1
 660                         self.overwrite = True
 661
 662                 elif key == KEY_HOME:
 663                         self.marked_block = 0
 664                         self.overwrite = True
 665
 666                 elif key == KEY_END:
 667                         self.marked_block = len(self.limits)-1
 668                         self.overwrite = True
 669
 670                 elif key in KEY_NUMBERS or key == KEY_ASCII:
 671                         if key == KEY_ASCII:
 672                                 code = getPrevAsciiCode()
 673                                 if code < 48 or code > 57:
 674                                         return
 675                                 number = code - 48
 676                         else:
 677                                 number = getKeyNumber(key)
 678                         oldvalue = self._value[self.marked_block]
 679
 680                         if self.overwrite:
 681                                 self._value[self.marked_block] = number
 682                                 self.overwrite = False
 683                         else:
 684                                 oldvalue *= 10
 685                                 newvalue = oldvalue + number
 686                                 if self.auto_jump and newvalue > self.limits[self.marked_block][1] and self.marked_block < len(self.limits)-1:
 687                                         self.handleKey(KEY_RIGHT)
 688                                         self.handleKey(key)
 689                                         return
 690                                 else:
 691                                         self._value[self.marked_block] = newvalue
 692
 693                         if len(str(self._value[self.marked_block])) >= self.block_len[self.marked_block]:
 694                                 self.handleKey(KEY_RIGHT)
 695
 696                         self.validate()
 697                         self.changed()
 698
 699         def genText(self):
 700                 value = ""
 701                 block_strlen = []
 702                 for i in self._value:
 703                         block_strlen.append(len(str(i)))
 704                         if value:
 705                                 value += self.seperator
 706                         value += str(i)
 707                 leftPos = sum(block_strlen[:(self.marked_block)])+self.marked_block
 708                 rightPos = sum(block_strlen[:(self.marked_block+1)])+self.marked_block
 709                 mBlock = range(leftPos, rightPos)
 710                 return (value, mBlock)
 711
 712         def getMulti(self, selected):
 713                 (value, mBlock) = self.genText()
 714                 if self.enabled:
 715                         return ("mtext"[1-selected:], value, mBlock)
 716                 else:
 717                         return ("text", value)
 718
 719         def getHTML(self, id):
 720                 # we definitely don't want leading zeros
 721                 return '.'.join(["%d" % d for d in self.value])
 722
 723 mac_limits = [(1,255),(1,255),(1,255),(1,255),(1,255),(1,255)]
 724 class ConfigMAC(ConfigSequence):
 725         def __init__(self, default):
 726                 ConfigSequence.__init__(self, seperator = ":", limits = mac_limits, default = default)
 727
 728 class ConfigPosition(ConfigSequence):
 729         def __init__(self, default, args):
 730                 ConfigSequence.__init__(self, seperator = ",", limits = [(0,args[0]),(0,args[1]),(0,args[2]),(0,args[3])], default = default)
 731
 732 clock_limits = [(0,23),(0,59)]
 733 class ConfigClock(ConfigSequence):
 734         def __init__(self, default):
 735                 t = localtime(default)
 736                 ConfigSequence.__init__(self, seperator = ":", limits = clock_limits, default = [t.tm_hour, t.tm_min])
 737
 738         def increment(self):
 739                 # Check if Minutes maxed out
 740                 if self._value[1] == 59:
 741                         # Increment Hour, reset Minutes
 742                         if self._value[0] < 23:
 743                                 self._value[0] += 1
 744                         else:
 745                                 self._value[0] = 0
 746                         self._value[1] = 0
 747                 else:
 748                         # Increment Minutes
 749                         self._value[1] += 1
 750                 # Trigger change
 751                 self.changed()
 752
 753         def decrement(self):
 754                 # Check if Minutes is minimum
 755                 if self._value[1] == 0:
 756                         # Decrement Hour, set Minutes to 59
 757                         if self._value[0] > 0:
 758                                 self._value[0] -= 1
 759                         else:
 760                                 self._value[0] = 23
 761                         self._value[1] = 59
 762                 else:
 763                         # Decrement Minutes
 764                         self._value[1] -= 1
 765                 # Trigger change
 766                 self.changed()
 767
 768 integer_limits = (0, 9999999999)
 769 class ConfigInteger(ConfigSequence):
 770         def __init__(self, default, limits = integer_limits):
 771                 ConfigSequence.__init__(self, seperator = ":", limits = [limits], default = default)
 772
 773         # you need to override this to do input validation
 774         def setValue(self, value):
 775                 self._value = [value]
 776                 self.changed()
 777
 778         def getValue(self):
 779                 return self._value[0]
 780
 781         value = property(getValue, setValue)
 782
 783         def fromstring(self, value):
 784                 return int(value)
 785
 786         def tostring(self, value):
 787                 return str(value)
 788
 789 class ConfigPIN(ConfigInteger):
 790         def __init__(self, default, len = 4, censor = ""):
 791                 assert isinstance(default, int), "ConfigPIN default must be an integer"
 792                 if default == -1:
 793                         default = "aaaa"
 794                 ConfigSequence.__init__(self, seperator = ":", limits = [(0, (10**len)-1)], censor_char = censor, default = default)
 795                 self.len = len
 796
 797         def getLength(self):
 798                 return self.len
 799
 800 class ConfigFloat(ConfigSequence):
 801         def __init__(self, default, limits):
 802                 ConfigSequence.__init__(self, seperator = ".", limits = limits, default = default)
 803
 804         def getFloat(self):
 805                 return float(self.value[1] / float(self.limits[1][1] + 1) + self.value[0])
 806
 807         float = property(getFloat)
 808
 809 # an editable text...
 810 class ConfigText(ConfigElement, NumericalTextInput):
 811         def __init__(self, default = "", fixed_size = True, visible_width = False):
 812                 ConfigElement.__init__(self)
 813                 NumericalTextInput.__init__(self, nextFunc = self.nextFunc, handleTimeout = False)
 814
 815                 self.marked_pos = 0
 816                 self.allmarked = (default != "")
 817                 self.fixed_size = fixed_size
 818                 self.visible_width = visible_width
 819                 self.offset = 0
 820                 self.overwrite = fixed_size
 821                 self.help_window = None
 822                 self.value = self.last_value = self.default = default
 823
 824         def validateMarker(self):
 825                 textlen = len(self.text)
 826                 if self.fixed_size:
 827                         if self.marked_pos > textlen-1:
 828                                 self.marked_pos = textlen-1
 829                 else:
 830                         if self.marked_pos > textlen:
 831                                 self.marked_pos = textlen
 832                 if self.marked_pos < 0:
 833                         self.marked_pos = 0
 834                 if self.visible_width:
 835                         if self.marked_pos < self.offset:
 836                                 self.offset = self.marked_pos
 837                         if self.marked_pos >= self.offset + self.visible_width:
 838                                 if self.marked_pos == textlen:
 839                                         self.offset = self.marked_pos - self.visible_width
 840                                 else:
 841                                         self.offset = self.marked_pos - self.visible_width + 1
 842                         if self.offset > 0 and self.offset + self.visible_width > textlen:
 843                                 self.offset = max(0, len - self.visible_width)
 844
 845         def insertChar(self, ch, pos, owr):
 846                 if owr or self.overwrite:
 847                         self.text = self.text[0:pos] + ch + self.text[pos + 1:]
 848                 elif self.fixed_size:
 849                         self.text = self.text[0:pos] + ch + self.text[pos:-1]
 850                 else:
 851                         self.text = self.text[0:pos] + ch + self.text[pos:]
 852
 853         def deleteChar(self, pos):
 854                 if not self.fixed_size:
 855                         self.text = self.text[0:pos] + self.text[pos + 1:]
 856                 elif self.overwrite:
 857                         self.text = self.text[0:pos] + " " + self.text[pos + 1:]
 858                 else:
 859                         self.text = self.text[0:pos] + self.text[pos + 1:] + " "
 860
 861         def deleteAllChars(self):
 862                 if self.fixed_size:
 863                         self.text = " " * len(self.text)
 864                 else:
 865                         self.text = ""
 866                 self.marked_pos = 0
 867
 868         def handleKey(self, key):
 869                 # this will no change anything on the value itself
 870                 # so we can handle it here in gui element
 871                 if key == KEY_DELETE:
 872                         self.timeout()
 873                         if self.allmarked:
 874                                 self.deleteAllChars()
 875                                 self.allmarked = False
 876                         else:
 877                                 self.deleteChar(self.marked_pos)
 878                                 if self.fixed_size and self.overwrite:
 879                                         self.marked_pos += 1
 880                 elif key == KEY_BACKSPACE:
 881                         self.timeout()
 882                         if self.allmarked:
 883                                 self.deleteAllChars()
 884                                 self.allmarked = False
 885                         elif self.marked_pos > 0:
 886                                 self.deleteChar(self.marked_pos-1)
 887                                 if not self.fixed_size and self.offset > 0:
 888                                         self.offset -= 1
 889                                 self.marked_pos -= 1
 890                 elif key == KEY_LEFT:
 891                         self.timeout()
 892                         if self.allmarked:
 893                                 self.marked_pos = len(self.text)
 894                                 self.allmarked = False
 895                         else:
 896                                 self.marked_pos -= 1
 897                 elif key == KEY_RIGHT:
 898                         self.timeout()
 899                         if self.allmarked:
 900                                 self.marked_pos = 0
 901                                 self.allmarked = False
 902                         else:
 903                                 self.marked_pos += 1
 904                 elif key == KEY_HOME:
 905                         self.timeout()
 906                         self.allmarked = False
 907                         self.marked_pos = 0
 908                 elif key == KEY_END:
 909                         self.timeout()
 910                         self.allmarked = False
 911                         self.marked_pos = len(self.text)
 912                 elif key == KEY_TOGGLEOW:
 913                         self.timeout()
 914                         self.overwrite = not self.overwrite
 915                 elif key == KEY_ASCII:
 916                         self.timeout()
 917                         newChar = unichr(getPrevAsciiCode())
 918                         if not self.useableChars or newChar in self.useableChars:
 919                                 if self.allmarked:
 920                                         self.deleteAllChars()
 921                                         self.allmarked = False
 922                                 self.insertChar(newChar, self.marked_pos, False)
 923                                 self.marked_pos += 1
 924                 elif key in KEY_NUMBERS:
 925                         owr = self.lastKey == getKeyNumber(key)
 926                         newChar = self.getKey(getKeyNumber(key))
 927                         if self.allmarked:
 928                                 self.deleteAllChars()
 929                                 self.allmarked = False
 930                         self.insertChar(newChar, self.marked_pos, owr)
 931                 elif key == KEY_TIMEOUT:
 932                         self.timeout()
 933                         if self.help_window:
 934                                 self.help_window.update(self)
 935                         return
 936
 937                 if self.help_window:
 938                         self.help_window.update(self)
 939                 self.validateMarker()
 940                 self.changed()
 941
 942         def nextFunc(self):
 943                 self.marked_pos += 1
 944                 self.validateMarker()
 945                 self.changed()
 946
 947         def getValue(self):
 948                 return self.text.encode("utf-8")
 949
 950         def setValue(self, val):
 951                 try:
 952                         self.text = val.decode("utf-8")
 953                 except UnicodeDecodeError:
 954                         self.text = val.decode("utf-8", "ignore")
 955                         print "Broken UTF8!"
 956
 957         value = property(getValue, setValue)
 958         _value = property(getValue, setValue)
 959
 960         def getText(self):
 961                 return self.text.encode("utf-8")
 962
 963         def getMulti(self, selected):
 964                 if self.visible_width:
 965                         if self.allmarked:
 966                                 mark = range(0, min(self.visible_width, len(self.text)))
 967                         else:
 968                                 mark = [self.marked_pos-self.offset]
 969                         return ("mtext"[1-selected:], self.text[self.offset:self.offset+self.visible_width].encode("utf-8")+" ", mark)
 970                 else:
 971                         if self.allmarked:
 972                                 mark = range(0, len(self.text))
 973                         else:
 974                                 mark = [self.marked_pos]
 975                         return ("mtext"[1-selected:], self.text.encode("utf-8")+" ", mark)
 976
 977         def onSelect(self, session):
 978                 self.allmarked = (self.value != "")
 979                 if session is not None:
 980                         from Screens.NumericalTextInputHelpDialog import NumericalTextInputHelpDialog
 981                         self.help_window = session.instantiateDialog(NumericalTextInputHelpDialog, self)
 982                         self.help_window.show()
 983
 984         def onDeselect(self, session):
 985                 self.marked_pos = 0
 986                 self.offset = 0
 987                 if self.help_window:
 988                         session.deleteDialog(self.help_window)
 989                         self.help_window = None
 990                 if not self.last_value == self.value:
 991                         self.changedFinal()
 992                         self.last_value = self.value
 993
 994         def getHTML(self, id):
 995                 return '<input type="text" name="' + id + '" value="' + self.value + '" /><br>\n'
 996
 997         def unsafeAssign(self, value):
 998                 self.value = str(value)
 999
1000 class ConfigPassword(ConfigText):
1001         def __init__(self, default = "", fixed_size = False, visible_width = False, censor = "*"):
1002                 ConfigText.__init__(self, default = default, fixed_size = fixed_size, visible_width = visible_width)
1003                 self.censor_char = censor
1004                 self.hidden = True
1005
1006         def getMulti(self, selected):
1007                 mtext, text, mark = ConfigText.getMulti(self, selected)
1008                 if self.hidden:
1009                         text = len(text) * self.censor_char
1010                 return (mtext, text, mark)
1011
1012         def onSelect(self, session):
1013                 ConfigText.onSelect(self, session)
1014                 self.hidden = False
1015
1016         def onDeselect(self, session):
1017                 ConfigText.onDeselect(self, session)
1018                 self.hidden = True
1019
1020 # lets the user select between [min, min+stepwidth, min+(stepwidth*2)..., maxval] with maxval <= max depending
1021 # on the stepwidth
1022 # min, max, stepwidth, default are int values
1023 # wraparound: pressing RIGHT key at max value brings you to min value and vice versa if set to True
1024 class ConfigSelectionNumber(ConfigSelection):
1025         def __init__(self, min, max, stepwidth, default = None, wraparound = False):
1026                 self.wraparound = wraparound
1027                 if default is None:
1028                         default = min
1029                 default = str(default)
1030                 choices = []
1031                 step = min
1032                 while step <= max:
1033                         choices.append(str(step))
1034                         step += stepwidth
1035
1036                 ConfigSelection.__init__(self, choices, default)
1037
1038         def getValue(self):
1039                 return int(ConfigSelection.getValue(self))
1040
1041         def setValue(self, val):
1042                 ConfigSelection.setValue(self, str(val))
1043
1044         def handleKey(self, key):
1045                 if not self.wraparound:
1046                         if key == KEY_RIGHT:
1047                                 if len(self.choices) == (self.choices.index(self.value) + 1):
1048                                         return
1049                         if key == KEY_LEFT:
1050                                 if self.choices.index(self.value) == 0:
1051                                         return
1052                 ConfigSelection.handleKey(self, key)
1053
1054 class ConfigNumber(ConfigText):
1055         def __init__(self, default = 0):
1056                 ConfigText.__init__(self, str(default), fixed_size = False)
1057
1058         def getValue(self):
1059                 return int(self.text)
1060
1061         def setValue(self, val):
1062                 self.text = str(val)
1063
1064         value = property(getValue, setValue)
1065         _value = property(getValue, setValue)
1066
1067         def isChanged(self):
1068                 sv = self.saved_value
1069                 strv = self.tostring(self.value)
1070                 if sv is None and strv == self.default:
1071                         return False
1072                 return strv != sv
1073
1074         def conform(self):
1075                 pos = len(self.text) - self.marked_pos
1076                 self.text = self.text.lstrip("0")
1077                 if self.text == "":
1078                         self.text = "0"
1079                 if pos > len(self.text):
1080                         self.marked_pos = 0
1081                 else:
1082                         self.marked_pos = len(self.text) - pos
1083
1084         def handleKey(self, key):
1085                 if key in KEY_NUMBERS or key == KEY_ASCII:
1086                         if key == KEY_ASCII:
1087                                 ascii = getPrevAsciiCode()
1088                                 if not (48 <= ascii <= 57):
1089                                         return
1090                         else:
1091                                 ascii = getKeyNumber(key) + 48
1092                         newChar = unichr(ascii)
1093                         if self.allmarked:
1094                                 self.deleteAllChars()
1095                                 self.allmarked = False
1096                         self.insertChar(newChar, self.marked_pos, False)
1097                         self.marked_pos += 1
1098                 else:
1099                         ConfigText.handleKey(self, key)
1100                 self.conform()
1101
1102         def onSelect(self, session):
1103                 self.allmarked = (self.value != "")
1104
1105         def onDeselect(self, session):
1106                 self.marked_pos = 0
1107                 self.offset = 0
1108                 if not self.last_value == self.value:
1109                         self.changedFinal()
1110                         self.last_value = self.value
1111
1112 class ConfigSearchText(ConfigText):
1113         def __init__(self, default = "", fixed_size = False, visible_width = False):
1114                 ConfigText.__init__(self, default = default, fixed_size = fixed_size, visible_width = visible_width)
1115                 NumericalTextInput.__init__(self, nextFunc = self.nextFunc, handleTimeout = False, search = True)
1116
1117 class ConfigDirectory(ConfigText):
1118         def __init__(self, default="", visible_width=60):
1119                 ConfigText.__init__(self, default, fixed_size = True, visible_width = visible_width)
1120
1121         def handleKey(self, key):
1122                 pass
1123
1124         def getValue(self):
1125                 if self.text == "":
1126                         return None
1127                 else:
1128                         return ConfigText.getValue(self)
1129
1130         def setValue(self, val):
1131                 if val == None:
1132                         val = ""
1133                 ConfigText.setValue(self, val)
1134
1135         def getMulti(self, selected):
1136                 if self.text == "":
1137                         return ("mtext"[1-selected:], _("List of Storage Devices"), range(0))
1138                 else:
1139                         return ConfigText.getMulti(self, selected)
1140
1141 # a slider.
1142 class ConfigSlider(ConfigElement):
1143         def __init__(self, default = 0, increment = 1, limits = (0, 100)):
1144                 ConfigElement.__init__(self)
1145                 self.value = self.last_value = self.default = default
1146                 self.min = limits[0]
1147                 self.max = limits[1]
1148                 self.increment = increment
1149
1150         def checkValues(self):
1151                 if self.value < self.min:
1152                         self.value = self.min
1153
1154                 if self.value > self.max:
1155                         self.value = self.max
1156
1157         def handleKey(self, key):
1158                 if key == KEY_LEFT:
1159                         self.value -= self.increment
1160                 elif key == KEY_RIGHT:
1161                         self.value += self.increment
1162                 elif key == KEY_HOME:
1163                         self.value = self.min
1164                 elif key == KEY_END:
1165                         self.value = self.max
1166                 else:
1167                         return
1168                 self.checkValues()
1169
1170         def getText(self):
1171                 return "%d / %d" % (self.value, self.max)
1172
1173         def getMulti(self, selected):
1174                 self.checkValues()
1175                 return ("slider", self.value, self.max)
1176
1177         def fromstring(self, value):
1178                 return int(value)
1179
1180 # a satlist. in fact, it's a ConfigSelection.
1181 class ConfigSatlist(ConfigSelection):
1182         def __init__(self, list, default = None):
1183                 if default is not None:
1184                         default = str(default)
1185                 ConfigSelection.__init__(self, choices = [(str(orbpos), desc) for (orbpos, desc, flags) in list], default = default)
1186
1187         def getOrbitalPosition(self):
1188                 if self.value == "":
1189                         return None
1190                 return int(self.value)
1191
1192         orbital_position = property(getOrbitalPosition)
1193
1194 class ConfigSet(ConfigElement):
1195         def __init__(self, choices, default = []):
1196                 ConfigElement.__init__(self)
1197                 if isinstance(choices, list):
1198                         choices.sort()
1199                         self.choices = choicesList(choices, choicesList.LIST_TYPE_LIST)
1200                 else:
1201                         assert False, "ConfigSet choices must be a list!"
1202                 if default is None:
1203                         default = []
1204                 self.pos = -1
1205                 default.sort()
1206                 self.last_value = self.default = default
1207                 self.value = default[:]
1208
1209         def toggleChoice(self, choice):
1210                 value = self.value
1211                 if choice in value:
1212                         value.remove(choice)
1213                 else:
1214                         value.append(choice)
1215                         value.sort()
1216                 self.changed()
1217
1218         def handleKey(self, key):
1219                 if key in KEY_NUMBERS + [KEY_DELETE, KEY_BACKSPACE]:
1220                         if self.pos != -1:
1221                                 self.toggleChoice(self.choices[self.pos])
1222                 elif key == KEY_LEFT:
1223                         if self.pos < 0:
1224                                 self.pos = len(self.choices)-1
1225                         else:
1226                                 self.pos -= 1
1227                 elif key == KEY_RIGHT:
1228                         if self.pos >= len(self.choices)-1:
1229                                 self.pos = -1
1230                         else:
1231                                 self.pos += 1
1232                 elif key in (KEY_HOME, KEY_END):
1233                         self.pos = -1
1234
1235         def genString(self, lst):
1236                 res = ""
1237                 for x in lst:
1238                         res += self.description[x]+" "
1239                 return res
1240
1241         def getText(self):
1242                 return self.genString(self.value)
1243
1244         def getMulti(self, selected):
1245                 if not selected or self.pos == -1:
1246                         return ("text", self.genString(self.value))
1247                 else:
1248                         tmp = self.value[:]
1249                         ch = self.choices[self.pos]
1250                         mem = ch in self.value
1251                         if not mem:
1252                                 tmp.append(ch)
1253                                 tmp.sort()
1254                         ind = tmp.index(ch)
1255                         val1 = self.genString(tmp[:ind])
1256                         val2 = " "+self.genString(tmp[ind+1:])
1257                         if mem:
1258                                 chstr = " "+self.description[ch]+" "
1259                         else:
1260                                 chstr = "("+self.description[ch]+")"
1261                         len_val1 = len(val1)
1262                         return ("mtext", val1+chstr+val2, range(len_val1, len_val1 + len(chstr)))
1263
1264         def onDeselect(self, session):
1265                 self.pos = -1
1266                 if not self.last_value == self.value:
1267                         self.changedFinal()
1268                         self.last_value = self.value[:]
1269
1270         def tostring(self, value):
1271                 return str(value)
1272
1273         def fromstring(self, val):
1274                 return eval(val)
1275
1276         description = property(lambda self: descriptionList(self.choices.choices, choicesList.LIST_TYPE_LIST))
1277
1278 class ConfigLocations(ConfigElement):
1279         def __init__(self, default = [], visible_width = False):
1280                 ConfigElement.__init__(self)
1281                 self.visible_width = visible_width
1282                 self.pos = -1
1283                 self.default = default
1284                 self.locations = []
1285                 self.mountpoints = []
1286                 self.value = default[:]
1287
1288         def setValue(self, value):
1289                 locations = self.locations
1290                 loc = [x[0] for x in locations if x[3]]
1291                 add = [x for x in value if not x in loc]
1292                 diff = add + [x for x in loc if not x in value]
1293                 locations = [x for x in locations if not x[0] in diff] + [[x, self.getMountpoint(x), True, True] for x in add]
1294                 locations.sort(key = lambda x: x[0])
1295                 self.locations = locations
1296                 self.changed()
1297
1298         def getValue(self):
1299                 self.checkChangedMountpoints()
1300                 locations = self.locations
1301                 for x in locations:
1302                         x[3] = x[2]
1303                 return [x[0] for x in locations if x[3]]
1304
1305         value = property(getValue, setValue)
1306
1307         def tostring(self, value):
1308                 return str(value)
1309
1310         def fromstring(self, val):
1311                 return eval(val)
1312
1313         def load(self):
1314                 sv = self.saved_value
1315                 if sv is None:
1316                         tmp = self.default
1317                 else:
1318                         tmp = self.fromstring(sv)
1319                 locations = [[x, None, False, False] for x in tmp]
1320                 self.refreshMountpoints()
1321                 for x in locations:
1322                         if fileExists(x[0]):
1323                                 x[1] = self.getMountpoint(x[0])
1324                                 x[2] = True
1325                 self.locations = locations
1326
1327         def save(self):
1328                 locations = self.locations
1329                 if self.save_disabled or not locations:
1330                         self.saved_value = None
1331                 else:
1332                         self.saved_value = self.tostring([x[0] for x in locations])
1333
1334         def isChanged(self):
1335                 sv = self.saved_value
1336                 locations = self.locations
1337                 if val is None and not locations:
1338                         return False
1339                 return self.tostring([x[0] for x in locations]) != sv
1340
1341         def addedMount(self, mp):
1342                 for x in self.locations:
1343                         if x[1] == mp:
1344                                 x[2] = True
1345                         elif x[1] == None and fileExists(x[0]):
1346                                 x[1] = self.getMountpoint(x[0])
1347                                 x[2] = True
1348
1349         def removedMount(self, mp):
1350                 for x in self.locations:
1351                         if x[1] == mp:
1352                                 x[2] = False
1353
1354         def refreshMountpoints(self):
1355                 self.mountpoints = [p.mountpoint for p in harddiskmanager.getMountedPartitions() if p.mountpoint != "/"]
1356                 self.mountpoints.sort(key = lambda x: -len(x))
1357
1358         def checkChangedMountpoints(self):
1359                 oldmounts = self.mountpoints
1360                 self.refreshMountpoints()
1361                 newmounts = self.mountpoints
1362                 if oldmounts == newmounts:
1363                         return
1364                 for x in oldmounts:
1365                         if not x in newmounts:
1366                                 self.removedMount(x)
1367                 for x in newmounts:
1368                         if not x in oldmounts:
1369                                 self.addedMount(x)
1370
1371         def getMountpoint(self, file):
1372                 file = os_path.realpath(file)+"/"
1373                 for m in self.mountpoints:
1374                         if file.startswith(m):
1375                                 return m
1376                 return None
1377
1378         def handleKey(self, key):
1379                 if key == KEY_LEFT:
1380                         self.pos -= 1
1381                         if self.pos < -1:
1382                                 self.pos = len(self.value)-1
1383                 elif key == KEY_RIGHT:
1384                         self.pos += 1
1385                         if self.pos >= len(self.value):
1386                                 self.pos = -1
1387                 elif key in (KEY_HOME, KEY_END):
1388                         self.pos = -1
1389
1390         def getText(self):
1391                 return " ".join(self.value)
1392
1393         def getMulti(self, selected):
1394                 if not selected:
1395                         valstr = " ".join(self.value)
1396                         if self.visible_width and len(valstr) > self.visible_width:
1397                                 return ("text", valstr[0:self.visible_width])
1398                         else:
1399                                 return ("text", valstr)
1400                 else:
1401                         i = 0
1402                         valstr = ""
1403                         ind1 = 0
1404                         ind2 = 0
1405                         for val in self.value:
1406                                 if i == self.pos:
1407                                         ind1 = len(valstr)
1408                                 valstr += str(val)+" "
1409                                 if i == self.pos:
1410                                         ind2 = len(valstr)
1411                                 i += 1
1412                         if self.visible_width and len(valstr) > self.visible_width:
1413                                 if ind1+1 < self.visible_width/2:
1414                                         off = 0
1415                                 else:
1416                                         off = min(ind1+1-self.visible_width/2, len(valstr)-self.visible_width)
1417                                 return ("mtext", valstr[off:off+self.visible_width], range(ind1-off,ind2-off))
1418                         else:
1419                                 return ("mtext", valstr, range(ind1,ind2))
1420
1421         def onDeselect(self, session):
1422                 self.pos = -1
1423
1424 # nothing.
1425 class ConfigNothing(ConfigSelection):
1426         def __init__(self):
1427                 ConfigSelection.__init__(self, choices = [("","")])
1428
1429 # until here, 'saved_value' always had to be a *string*.
1430 # now, in ConfigSubsection, and only there, saved_value
1431 # is a dict, essentially forming a tree.
1432 #
1433 # config.foo.bar=True
1434 # config.foobar=False
1435 #
1436 # turns into:
1437 # config.saved_value == {"foo": {"bar": "True"}, "foobar": "False"}
1438 #
1439
1440 class ConfigSubsectionContent(object):
1441         pass
1442
1443 # we store a backup of the loaded configuration
1444 # data in self.stored_values, to be able to deploy
1445 # them when a new config element will be added,
1446 # so non-default values are instantly available
1447
1448 # A list, for example:
1449 # config.dipswitches = ConfigSubList()
1450 # config.dipswitches.append(ConfigYesNo())
1451 # config.dipswitches.append(ConfigYesNo())
1452 # config.dipswitches.append(ConfigYesNo())
1453 class ConfigSubList(list, object):
1454         def __init__(self):
1455                 list.__init__(self)
1456                 self.stored_values = {}
1457
1458         def save(self):
1459                 for x in self:
1460                         x.save()
1461
1462         def load(self):
1463                 for x in self:
1464                         x.load()
1465
1466         def getSavedValue(self):
1467                 res = { }
1468                 for i, val in enumerate(self):
1469                         sv = val.saved_value
1470                         if sv is not None:
1471                                 res[str(i)] = sv
1472                 return res
1473
1474         def setSavedValue(self, values):
1475                 self.stored_values = dict(values)
1476                 for (key, val) in self.stored_values.items():
1477                         if int(key) < len(self):
1478                                 self[int(key)].saved_value = val
1479
1480         saved_value = property(getSavedValue, setSavedValue)
1481
1482         def append(self, item):
1483                 i = str(len(self))
1484                 list.append(self, item)
1485                 if i in self.stored_values:
1486                         item.saved_value = self.stored_values[i]
1487                         item.load()
1488
1489         def dict(self):
1490                 return dict([(str(index), value) for index, value in enumerate(self)])
1491
1492 # same as ConfigSubList, just as a dictionary.
1493 # care must be taken that the 'key' has a proper
1494 # str() method, because it will be used in the config
1495 # file.
1496 class ConfigSubDict(dict, object):
1497         def __init__(self):
1498                 dict.__init__(self)
1499                 self.stored_values = {}
1500
1501         def save(self):
1502                 for x in self.values():
1503                         x.save()
1504
1505         def load(self):
1506                 for x in self.values():
1507                         x.load()
1508
1509         def getSavedValue(self):
1510                 res = {}
1511                 for (key, val) in self.items():
1512                         sv = val.saved_value
1513                         if sv is not None:
1514                                 res[str(key)] = sv
1515                 return res
1516
1517         def setSavedValue(self, values):
1518                 self.stored_values = dict(values)
1519                 for (key, val) in self.items():
1520                         if str(key) in self.stored_values:
1521                                 val.saved_value = self.stored_values[str(key)]
1522
1523         saved_value = property(getSavedValue, setSavedValue)
1524
1525         def __setitem__(self, key, item):
1526                 dict.__setitem__(self, key, item)
1527                 if str(key) in self.stored_values:
1528                         item.saved_value = self.stored_values[str(key)]
1529                         item.load()
1530
1531         def dict(self):
1532                 return self
1533
1534 # Like the classes above, just with a more "native"
1535 # syntax.
1536 #
1537 # some evil stuff must be done to allow instant
1538 # loading of added elements. this is why this class
1539 # is so complex.
1540 #
1541 # we need the 'content' because we overwrite
1542 # __setattr__.
1543 # If you don't understand this, try adding
1544 # __setattr__ to a usual exisiting class and you will.
1545 class ConfigSubsection(object):
1546         def __init__(self):
1547                 self.__dict__["content"] = ConfigSubsectionContent()
1548                 self.content.items = { }
1549                 self.content.stored_values = { }
1550
1551         def __setattr__(self, name, value):
1552                 if name == "saved_value":
1553                         return self.setSavedValue(value)
1554                 assert isinstance(value, (ConfigSubsection, ConfigElement, ConfigSubList, ConfigSubDict)), "ConfigSubsections can only store ConfigSubsections, ConfigSubLists, ConfigSubDicts or ConfigElements"
1555                 content = self.content
1556                 content.items[name] = value
1557                 x = content.stored_values.get(name, None)
1558                 if x is not None:
1559                         #print "ok, now we have a new item,", name, "and have the following value for it:", x
1560                         value.saved_value = x
1561                         value.load()
1562
1563         def __getattr__(self, name):
1564                 return self.content.items[name]
1565
1566         def getSavedValue(self):
1567                 res = self.content.stored_values
1568                 for (key, val) in self.content.items.items():
1569                         sv = val.saved_value
1570                         if sv is not None:
1571                                 res[key] = sv
1572                         elif key in res:
1573                                 del res[key]
1574                 return res
1575
1576         def setSavedValue(self, values):
1577                 values = dict(values)
1578                 self.content.stored_values = values
1579                 for (key, val) in self.content.items.items():
1580                         value = values.get(key, None)
1581                         if value is not None:
1582                                 val.saved_value = value
1583
1584         saved_value = property(getSavedValue, setSavedValue)
1585
1586         def save(self):
1587                 for x in self.content.items.values():
1588                         x.save()
1589
1590         def load(self):
1591                 for x in self.content.items.values():
1592                         x.load()
1593
1594         def dict(self):
1595                 return self.content.items
1596
1597 # the root config object, which also can "pickle" (=serialize)
1598 # down the whole config tree.
1599 #
1600 # we try to keep non-existing config entries, to apply them whenever
1601 # a new config entry is added to a subsection
1602 # also, non-existing config entries will be saved, so they won't be
1603 # lost when a config entry disappears.
1604 class Config(ConfigSubsection):
1605         def __init__(self):
1606                 ConfigSubsection.__init__(self)
1607
1608         def pickle_this(self, prefix, topickle, result):
1609                 for (key, val) in topickle.items():
1610                         name = '.'.join((prefix, key))
1611                         if isinstance(val, dict):
1612                                 self.pickle_this(name, val, result)
1613                         elif isinstance(val, tuple):
1614                                 result += [name, '=', val[0], '\n']
1615                         else:
1616                                 result += [name, '=', val, '\n']
1617
1618         def pickle(self):
1619                 result = []
1620                 self.pickle_this("config", self.saved_value, result)
1621                 return ''.join(result)
1622
1623         def unpickle(self, lines):
1624                 tree = { }
1625                 for l in lines:
1626                         if not l or l[0] == '#':
1627                                 continue
1628
1629                         n = l.find('=')
1630                         val = l[n+1:].strip()
1631
1632                         names = l[:n].split('.')
1633 #                       if val.find(' ') != -1:
1634 #                               val = val[:val.find(' ')]
1635
1636                         base = tree
1637
1638                         for n in names[:-1]:
1639                                 base = base.setdefault(n, {})
1640
1641                         base[names[-1]] = val
1642
1643                 # we inherit from ConfigSubsection, so ...
1644                 #object.__setattr__(self, "saved_value", tree["config"])
1645                 if "config" in tree:
1646                         self.setSavedValue(tree["config"])
1647
1648         def saveToFile(self, filename):
1649                 text = self.pickle()
1650                 f = open(filename, "w")
1651                 f.write(text)
1652                 f.close()
1653
1654         def loadFromFile(self, filename):
1655                 f = open(filename, "r")
1656                 self.unpickle(f.readlines())
1657                 f.close()
1658
1659 config = Config()
1660 config.misc = ConfigSubsection()
1661
1662 class ConfigFile:
1663         CONFIG_FILE = resolveFilename(SCOPE_CONFIG, "settings")
1664
1665         def load(self):
1666                 try:
1667                         config.loadFromFile(self.CONFIG_FILE)
1668                 except IOError, e:
1669                         print "unable to load config (%s), assuming defaults..." % str(e)
1670
1671         def save(self):
1672 #               config.save()
1673                 config.saveToFile(self.CONFIG_FILE)
1674
1675         def __resolveValue(self, pickles, cmap):
1676                 key = pickles[0]
1677                 if cmap.has_key(key):
1678                         if len(pickles) > 1:
1679                                 return self.__resolveValue(pickles[1:], cmap[key].dict())
1680                         else:
1681                                 return str(cmap[key].value)
1682                 return None
1683
1684         def getResolvedKey(self, key):
1685                 names = key.split('.')
1686                 if len(names) > 1:
1687                         if names[0] == "config":
1688                                 ret=self.__resolveValue(names[1:], config.content.items)
1689                                 if ret and len(ret):
1690                                         return ret
1691                 print "getResolvedKey", key, "failed !! (Typo??)"
1692                 return ""
1693
1694 def NoSave(element):
1695         element.disableSave()
1696         return element
1697
1698 configfile = ConfigFile()
1699
1700 configfile.load()
1701
1702 def getConfigListEntry(*args):
1703         assert len(args) > 1, "getConfigListEntry needs a minimum of two arguments (descr, configElement)"
1704         return args
1705
1706 def updateConfigElement(element, newelement):
1707         newelement.value = element.value
1708         return newelement
1709
1710 #def _(x):
1711 #       return x
1712 #
1713 #config.bla = ConfigSubsection()
1714 #config.bla.test = ConfigYesNo()
1715 #config.nim = ConfigSubList()
1716 #config.nim.append(ConfigSubsection())
1717 #config.nim[0].bla = ConfigYesNo()
1718 #config.nim.append(ConfigSubsection())
1719 #config.nim[1].bla = ConfigYesNo()
1720 #config.nim[1].blub = ConfigYesNo()
1721 #config.arg = ConfigSubDict()
1722 #config.arg["Hello"] = ConfigYesNo()
1723 #
1724 #config.arg["Hello"].handleKey(KEY_RIGHT)
1725 #config.arg["Hello"].handleKey(KEY_RIGHT)
1726 #
1727 ##config.saved_value
1728 #
1729 ##configfile.save()
1730 #config.save()
1731 #print config.pickle()