lib/python/Components/config.py

   1 import time
   2 from Tools.NumericalTextInput import NumericalTextInput
   3 from Tools.Directories import resolveFilename, SCOPE_CONFIG
   4 import copy
   5
   6
   7 # ConfigElement, the base class of all ConfigElements.
   8
   9 # it stores:
  10 #   value    the current value, usefully encoded.
  11 #            usually a property which retrieves _value,
  12 #            and maybe does some reformatting
  13 #   _value   the value as it's going to be saved in the configfile,
  14 #            though still in non-string form.
  15 #            this is the object which is actually worked on.
  16 #   default  the initial value. If _value is equal to default,
  17 #            it will not be stored in the config file
  18 #   saved_value is a text representation of _value, stored in the config file
  19 #
  20 # and has (at least) the following methods:
  21 #   save()   stores _value into saved_value,
  22 #            (or stores 'None' if it should not be stored)
  23 #   load()   loads _value from saved_value, or loads
  24 #            the default if saved_value is 'None' (default)
  25 #            or invalid.
  26 #
  27 class ConfigElement(object):
  28         def __init__(self):
  29
  30                 object.__init__(self)
  31                 self.saved_value = None
  32                 self.save_disabled = False
  33                 self.notifiers = []
  34                 self.enabled = True
  35
  36         # you need to override this to do input validation
  37         def setValue(self, value):
  38                 self._value = value
  39                 self.changed()
  40
  41         def getValue(self):
  42                 return self._value
  43
  44         value = property(getValue, setValue)
  45
  46         # you need to override this if self.value is not a string
  47         def fromstring(self, value):
  48                 return value
  49
  50         # you can overide this for fancy default handling
  51         def load(self):
  52                 if self.saved_value is None:
  53                         self.value = self.default
  54                 else:
  55                         self.value = self.fromstring(self.saved_value)
  56
  57         def tostring(self, value):
  58                 return str(value)
  59
  60         # you need to override this if str(self.value) doesn't work
  61         def save(self):
  62                 if self.save_disabled or self.value == self.default:
  63                         self.saved_value = None
  64                 else:
  65                         self.saved_value = self.tostring(self.value)
  66
  67         def cancel(self):
  68                 self.load()
  69
  70         def changed(self):
  71                 for x in self.notifiers:
  72                         x(self)
  73
  74         def addNotifier(self, notifier):
  75                 assert callable(notifier), "notifiers must be callable"
  76                 self.notifiers.append(notifier)
  77
  78                 # CHECKME:
  79                 # do we want to call the notifier
  80                 #  - at all when adding it? (yes)
  81                 #  - when the default is active? (yes)
  82                 #  - when no value *yet* has been set,
  83                 #    because no config has ever been read (currently yes)
  84                 #    (though that's not so easy to detect.
  85                 #     the entry could just be new.)
  86                 notifier(self)
  87
  88         def disableSave(self):
  89                 self.save_disabled = True
  90
  91         def __call__(self, selected):
  92                 return self.getMulti(selected)
  93
  94         def helpWindow(self):
  95                 return None
  96
  97 KEY_LEFT = 0
  98 KEY_RIGHT = 1
  99 KEY_OK = 2
 100 KEY_DELETE = 3
 101 KEY_TIMEOUT = 4
 102 KEY_NUMBERS = range(12, 12+10)
 103 KEY_0 = 12
 104 KEY_9 = 12+9
 105
 106 def getKeyNumber(key):
 107         assert key in KEY_NUMBERS
 108         return key - KEY_0
 109
 110 #
 111 # ConfigSelection is a "one of.."-type.
 112 # it has the "choices", usually a list, which contains
 113 # (id, desc)-tuples (or just only the ids, in case the id
 114 # will be used as description)
 115 #
 116 # all ids MUST be plain strings.
 117 #
 118 class ConfigSelection(ConfigElement):
 119         def __init__(self, choices, default = None):
 120                 ConfigElement.__init__(self)
 121                 self.choices = []
 122                 self.description = {}
 123
 124                 if isinstance(choices, list):
 125                         for x in choices:
 126                                 if isinstance(x, tuple):
 127                                         self.choices.append(x[0])
 128                                         self.description[x[0]] = x[1]
 129                                 else:
 130                                         self.choices.append(x)
 131                                         self.description[x] = x
 132                 elif isinstance(choices, dict):
 133                         for (key, val) in choices.items():
 134                                 self.choices.append(key)
 135                                 self.description[key] = val
 136                 else:
 137                         assert False, "ConfigSelection choices must be dict or list!"
 138
 139                 #assert len(self.choices), "you can't have an empty configselection"
 140                 if len(self.choices) == 0:
 141                         self.choices = [""]
 142                         self.description[""] = ""
 143
 144                 if default is None:
 145                         default = self.choices[0]
 146
 147                 assert default in self.choices, "default must be in choice list, but " + repr(default) + " is not!"
 148                 for x in self.choices:
 149                         assert isinstance(x, str), "ConfigSelection choices must be strings"
 150
 151                 self.value = self.default = default
 152
 153         def setValue(self, value):
 154                 if value in self.choices:
 155                         self._value = value
 156                 else:
 157                         self._value = self.default
 158
 159                 self.changed()
 160
 161         def tostring(self, val):
 162                 return val
 163
 164         def getValue(self):
 165                 return self._value
 166
 167         value = property(getValue, setValue)
 168
 169         def getIndex(self):
 170                 return self.choices.index(self.value)
 171
 172         index = property(getIndex)
 173
 174         # GUI
 175         def handleKey(self, key):
 176                 nchoices = len(self.choices)
 177                 i = self.choices.index(self.value)
 178                 if key == KEY_LEFT:
 179                         self.value = self.choices[(i + nchoices - 1) % nchoices]
 180                 elif key == KEY_RIGHT:
 181                         self.value = self.choices[(i + 1) % nchoices]
 182
 183         def getMulti(self, selected):
 184                 return ("text", self.description[self.value])
 185
 186         # HTML
 187         def getHTML(self, id):
 188                 res = ""
 189                 for v in self.choices:
 190                         if self.value == v:
 191                                 checked = 'checked="checked" '
 192                         else:
 193                                 checked = ''
 194                         res += '<input type="radio" name="' + id + '" ' + checked + 'value="' + v + '">' + self.description[v] + "</input></br>\n"
 195                 return res;
 196
 197         def unsafeAssign(self, value):
 198                 # setValue does check if value is in choices. This is safe enough.
 199                 self.value = value
 200
 201 # a binary decision.
 202 #
 203 # several customized versions exist for different
 204 # descriptions.
 205 #
 206 class ConfigBoolean(ConfigElement):
 207         def __init__(self, default = False, descriptions = {False: "false", True: "true"}):
 208                 ConfigElement.__init__(self)
 209                 self.descriptions = descriptions
 210                 self.value = self.default = default
 211         def handleKey(self, key):
 212                 if key in [KEY_LEFT, KEY_RIGHT]:
 213                         self.value = not self.value
 214
 215         def getMulti(self, selected):
 216                 return ("text", _(self.descriptions[self.value]))
 217
 218         def tostring(self, value):
 219                 if not value:
 220                         return "false"
 221                 else:
 222                         return "true"
 223
 224         def fromstring(self, val):
 225                 if val == "true":
 226                         return True
 227                 else:
 228                         return False
 229
 230         def getHTML(self, id):
 231                 if self.value:
 232                         checked = ' checked="checked"'
 233                 else:
 234                         checked = ''
 235                 return '<input type="checkbox" name="' + id + '" value="1" ' + checked + " />"
 236
 237         # this is FLAWED. and must be fixed.
 238         def unsafeAssign(self, value):
 239                 if value == "1":
 240                         self.value = True
 241                 else:
 242                         self.value = False
 243
 244 class ConfigYesNo(ConfigBoolean):
 245         def __init__(self, default = False):
 246                 ConfigBoolean.__init__(self, default = default, descriptions = {False: _("no"), True: _("yes")})
 247
 248 class ConfigOnOff(ConfigBoolean):
 249         def __init__(self, default = False):
 250                 ConfigBoolean.__init__(self, default = default, descriptions = {False: _("off"), True: _("on")})
 251
 252 class ConfigEnableDisable(ConfigBoolean):
 253         def __init__(self, default = False):
 254                 ConfigBoolean.__init__(self, default = default, descriptions = {False: _("disable"), True: _("enable")})
 255
 256 class ConfigDateTime(ConfigElement):
 257         def __init__(self, default, formatstring, increment = 86400):
 258                 ConfigElement.__init__(self)
 259                 self.increment = increment
 260                 self.formatstring = formatstring
 261                 self.value = self.default = int(default)
 262
 263         def handleKey(self, key):
 264                 if key == KEY_LEFT:
 265                         self.value = self.value - self.increment
 266                 if key == KEY_RIGHT:
 267                         self.value = self.value + self.increment
 268
 269         def getMulti(self, selected):
 270                 return ("text", time.strftime(self.formatstring, time.localtime(self.value)))
 271
 272         def fromstring(self, val):
 273                 return int(val)
 274
 275 # *THE* mighty config element class
 276 #
 277 # allows you to store/edit a sequence of values.
 278 # can be used for IP-addresses, dates, plain integers, ...
 279 # several helper exist to ease this up a bit.
 280 #
 281 class ConfigSequence(ConfigElement):
 282         def __init__(self, seperator, limits, censor_char = "", default = None):
 283                 ConfigElement.__init__(self)
 284                 assert isinstance(limits, list) and len(limits[0]) == 2, "limits must be [(min, max),...]-tuple-list"
 285                 assert censor_char == "" or len(censor_char) == 1, "censor char must be a single char (or \"\")"
 286                 #assert isinstance(default, list), "default must be a list"
 287                 #assert isinstance(default[0], int), "list must contain numbers"
 288                 #assert len(default) == len(limits), "length must match"
 289
 290                 self.marked_pos = 0
 291                 self.seperator = seperator
 292                 self.limits = limits
 293                 self.censor_char = censor_char
 294
 295                 self.default = default
 296                 self.value = copy.copy(default)
 297
 298         def validate(self):
 299                 max_pos = 0
 300                 num = 0
 301                 for i in self._value:
 302                         max_pos += len(str(self.limits[num][1]))
 303
 304                         while self._value[num] < self.limits[num][0]:
 305                                 self.value[num] += 1
 306
 307                         while self._value[num] > self.limits[num][1]:
 308                                 self._value[num] -= 1
 309
 310                         num += 1
 311
 312                 if self.marked_pos >= max_pos:
 313                         self.marked_pos = max_pos - 1
 314
 315                 if self.marked_pos < 0:
 316                         self.marked_pos = 0
 317
 318         def validatePos(self):
 319                 if self.marked_pos < 0:
 320                         self.marked_pos = 0
 321
 322                 total_len = sum([len(str(x[1])) for x in self.limits])
 323
 324                 if self.marked_pos >= total_len:
 325                         self.marked_pos = total_len - 1
 326
 327         def handleKey(self, key):
 328                 if key == KEY_LEFT:
 329                         self.marked_pos -= 1
 330                         self.validatePos()
 331
 332                 if key == KEY_RIGHT:
 333                         self.marked_pos += 1
 334                         self.validatePos()
 335
 336                 if key in KEY_NUMBERS:
 337                         block_len = []
 338                         for x in self.limits:
 339                                 block_len.append(len(str(x[1])))
 340
 341                         total_len = sum(block_len)
 342
 343                         pos = 0
 344                         blocknumber = 0
 345                         block_len_total = [0, ]
 346                         for x in block_len:
 347                                 pos += block_len[blocknumber]
 348                                 block_len_total.append(pos)
 349                                 if pos - 1 >= self.marked_pos:
 350                                         pass
 351                                 else:
 352                                         blocknumber += 1
 353
 354                         number = getKeyNumber(key)
 355
 356                         # length of numberblock
 357                         number_len = len(str(self.limits[blocknumber][1]))
 358
 359                         # position in the block
 360                         posinblock = self.marked_pos - block_len_total[blocknumber]
 361
 362                         oldvalue = self._value[blocknumber]
 363                         olddec = oldvalue % 10 ** (number_len - posinblock) - (oldvalue % 10 ** (number_len - posinblock - 1))
 364                         newvalue = oldvalue - olddec + (10 ** (number_len - posinblock - 1) * number)
 365
 366                         self._value[blocknumber] = newvalue
 367                         self.marked_pos += 1
 368
 369                         self.validate()
 370                         self.changed()
 371
 372         def getMulti(self, selected):
 373                 value = ""
 374                 mPos = self.marked_pos
 375                 num = 0;
 376                 for i in self._value:
 377                         if len(value):  #fixme no heading separator possible
 378                                 value += self.seperator
 379                                 if mPos >= len(value) - 1:
 380                                         mPos += 1
 381
 382                         if self.censor_char == "":
 383                                 value += ("%0" + str(len(str(self.limits[num][1]))) + "d") % i
 384                         else:
 385                                 value += (self.censor_char * len(str(self.limits[num][1])))
 386                         num += 1
 387
 388                         # only mark cursor when we are selected
 389                         # (this code is heavily ink optimized!)
 390                 if self.enabled:
 391                         return ("mtext"[1-selected:], value, [mPos])
 392                 else:
 393                         return ("text", value)
 394
 395         def tostring(self, val):
 396                 return self.seperator.join([self.saveSingle(x) for x in val])
 397
 398         def saveSingle(self, v):
 399                 return str(v)
 400
 401         def fromstring(self, value):
 402                 return [int(x) for x in self.saved_value.split(self.seperator)]
 403
 404 class ConfigIP(ConfigSequence):
 405         def __init__(self, default):
 406                 ConfigSequence.__init__(self, seperator = ".", limits = [(0,255),(0,255),(0,255),(0,255)], default = default)
 407
 408 class ConfigMAC(ConfigSequence):
 409         def __init__(self, default):
 410                 ConfigSequence.__init__(self, seperator = ":", limits = [(1,255),(1,255),(1,255),(1,255),(1,255),(1,255)], default = default)
 411
 412 class ConfigPosition(ConfigSequence):
 413         def __init__(self, default, args):
 414                 ConfigSequence.__init__(self, seperator = ",", limits = [(0,args[0]),(0,args[1]),(0,args[2]),(0,args[3])], default = default)
 415
 416 class ConfigClock(ConfigSequence):
 417         def __init__(self, default):
 418                 ConfigSequence.__init__(self, seperator = ":", limits = [(0,23),(0,59)], default = default)
 419
 420 class ConfigInteger(ConfigSequence):
 421         def __init__(self, default, limits):
 422                 ConfigSequence.__init__(self, seperator = ":", limits = [limits], default = default)
 423
 424         # you need to override this to do input validation
 425         def setValue(self, value):
 426                 self._value = [value]
 427                 self.changed()
 428
 429         def getValue(self):
 430                 return self._value[0]
 431
 432         value = property(getValue, setValue)
 433
 434         def fromstring(self, value):
 435                 return int(value)
 436
 437         def tostring(self, value):
 438                 return str(value)
 439
 440 class ConfigPIN(ConfigInteger):
 441         def __init__(self, default, len = 4, censor = ""):
 442                 assert isinstance(default, int), "ConfigPIN default must be an integer"
 443                 ConfigSequence.__init__(self, seperator = ":", limits = [(0, (10**len)-1)], censor_char = censor, default = default)
 444                 self.len = len
 445
 446         def getLength(self):
 447                 return self.len
 448
 449 class ConfigFloat(ConfigSequence):
 450         def __init__(self, default, limits):
 451                 ConfigSequence.__init__(self, seperator = ".", limits = limits, default = default)
 452
 453         def getFloat(self):
 454                 return float(self.value[1] / float(self.limits[1][1] + 1) + self.value[0])
 455
 456         float = property(getFloat)
 457
 458 # an editable text...
 459 class ConfigText(ConfigElement, NumericalTextInput):
 460         def __init__(self, default = "", fixed_size = True):
 461                 ConfigElement.__init__(self)
 462                 NumericalTextInput.__init__(self, nextFunc = self.nextFunc, handleTimeout = False)
 463
 464                 self.marked_pos = 0
 465                 self.fixed_size = fixed_size
 466
 467                 self.value = self.default = default
 468
 469         def validateMarker(self):
 470                 if self.marked_pos < 0:
 471                         self.marked_pos = 0
 472                 if self.marked_pos >= len(self.text):
 473                         self.marked_pos = len(self.text) - 1
 474
 475         #def nextEntry(self):
 476         #       self.vals[1](self.getConfigPath())
 477
 478         def handleKey(self, key):
 479                 # this will no change anything on the value itself
 480                 # so we can handle it here in gui element
 481                 if key == KEY_DELETE:
 482                         self.text = self.text[0:self.marked_pos] + self.text[self.marked_pos + 1:]
 483                 elif key == KEY_LEFT:
 484                         self.marked_pos -= 1
 485                 elif key == KEY_RIGHT:
 486                         self.marked_pos += 1
 487                         if not self.fixed_size:
 488                                 if self.marked_pos >= len(self.text):
 489                                         self.text = self.text.ljust(len(self.text) + 1)
 490                 elif key in KEY_NUMBERS:
 491                         number = self.getKey(getKeyNumber(key))
 492                         self.text = self.text[0:self.marked_pos] + str(number) + self.text[self.marked_pos + 1:]
 493                 elif key == KEY_TIMEOUT:
 494                         self.timeout()
 495                         return
 496
 497                 self.validateMarker()
 498                 self.changed()
 499
 500         def nextFunc(self):
 501                 self.marked_pos += 1
 502                 self.validateMarker()
 503                 self.changed()
 504
 505         def getValue(self):
 506                 return self.text.encode("utf-8")
 507
 508         def setValue(self, val):
 509                 try:
 510                         self.text = val.decode("utf-8")
 511                 except UnicodeDecodeError:
 512                         self.text = val
 513                         print "Broken UTF8!"
 514
 515         value = property(getValue, setValue)
 516         _value = property(getValue, setValue)
 517
 518         def getMulti(self, selected):
 519                 return ("mtext"[1-selected:], self.value, [self.marked_pos])
 520
 521         def helpWindow(self):
 522                 from Screens.NumericalTextInputHelpDialog import NumericalTextInputHelpDialog
 523                 return (NumericalTextInputHelpDialog,self)
 524
 525         def getHTML(self, id):
 526                 return '<input type="text" name="' + id + '" value="' + self.value + '" /><br>\n'
 527
 528         def unsafeAssign(self, value):
 529                 self.value = str(value)
 530
 531 # a slider.
 532 class ConfigSlider(ConfigElement):
 533         def __init__(self, default = 0, increment = 1, limits = (0, 100)):
 534                 ConfigElement.__init__(self)
 535                 self.value = self.default = default
 536                 self.min = limits[0]
 537                 self.max = limits[1]
 538                 self.increment = increment
 539
 540         def checkValues(self):
 541                 if self.value < self.min:
 542                         self.value = self.min
 543
 544                 if self.value > self.max:
 545                         self.value = self.max
 546
 547         def handleKey(self, key):
 548                 if key == KEY_LEFT:
 549                         self.value -= self.increment
 550                 elif key == KEY_RIGHT:
 551                         self.value += self.increment
 552                 else:
 553                         return
 554
 555                 self.checkValues()
 556                 self.changed()
 557
 558         def getMulti(self, selected):
 559                 self.checkValues()
 560                 return ("slider", self.value, self.max)
 561
 562         def fromstring(self, value):
 563                 return int(value)
 564
 565 # a satlist. in fact, it's a ConfigSelection.
 566 class ConfigSatlist(ConfigSelection):
 567         def __init__(self, list, default = None):
 568                 if default is not None:
 569                         default = str(default)
 570                 ConfigSelection.__init__(self, choices = [(str(orbpos), desc) for (orbpos, desc) in list], default = default)
 571
 572         def getOrbitalPosition(self):
 573                 if self.value == "":
 574                         return None
 575                 return int(self.value)
 576
 577         orbital_position = property(getOrbitalPosition)
 578
 579 # nothing.
 580 class ConfigNothing(ConfigSelection):
 581         def __init__(self):
 582                 ConfigSelection.__init__(self, choices = [""])
 583
 584 # until here, 'saved_value' always had to be a *string*.
 585 # now, in ConfigSubsection, and only there, saved_value
 586 # is a dict, essentially forming a tree.
 587 #
 588 # config.foo.bar=True
 589 # config.foobar=False
 590 #
 591 # turns into:
 592 # config.saved_value == {"foo": {"bar": "True"}, "foobar": "False"}
 593 #
 594
 595
 596 class ConfigSubsectionContent(object):
 597         pass
 598
 599 # we store a backup of the loaded configuration
 600 # data in self.stored_values, to be able to deploy
 601 # them when a new config element will be added,
 602 # so non-default values are instantly available
 603
 604 # A list, for example:
 605 # config.dipswitches = ConfigSubList()
 606 # config.dipswitches.append(ConfigYesNo())
 607 # config.dipswitches.append(ConfigYesNo())
 608 # config.dipswitches.append(ConfigYesNo())
 609 class ConfigSubList(list, object):
 610         def __init__(self):
 611                 object.__init__(self)
 612                 list.__init__(self)
 613                 self.stored_values = {}
 614
 615         def save(self):
 616                 for x in self:
 617                         x.save()
 618
 619         def load(self):
 620                 for x in self:
 621                         x.load()
 622
 623         def getSavedValue(self):
 624                 res = {}
 625                 for i in range(len(self)):
 626                         sv = self[i].saved_value
 627                         if sv is not None:
 628                                 res[str(i)] = sv
 629                 return res
 630
 631         def setSavedValue(self, values):
 632                 self.stored_values = dict(values)
 633                 for (key, val) in self.stored_values.items():
 634                         if int(key) < len(self):
 635                                 self[int(key)].saved_value = val
 636
 637         saved_value = property(getSavedValue, setSavedValue)
 638
 639         def append(self, item):
 640                 i = str(len(self))
 641                 list.append(self, item)
 642                 if i in self.stored_values:
 643                         item.saved_value = self.stored_values[i]
 644                         item.load()
 645
 646 # same as ConfigSubList, just as a dictionary.
 647 # care must be taken that the 'key' has a proper
 648 # str() method, because it will be used in the config
 649 # file.
 650 class ConfigSubDict(dict, object):
 651         def __init__(self):
 652                 object.__init__(self)
 653                 dict.__init__(self)
 654                 self.stored_values = {}
 655
 656         def save(self):
 657                 for x in self.values():
 658                         x.save()
 659
 660         def load(self):
 661                 for x in self.values():
 662                         x.load()
 663
 664         def getSavedValue(self):
 665                 res = {}
 666                 for (key, val) in self.items():
 667                         if val.saved_value is not None:
 668                                 res[str(key)] = val.saved_value
 669                 return res
 670
 671         def setSavedValue(self, values):
 672                 self.stored_values = dict(values)
 673                 for (key, val) in self.items():
 674                         if str(key) in self.stored_values:
 675                                 val = self.stored_values[str(key)]
 676
 677         saved_value = property(getSavedValue, setSavedValue)
 678
 679         def __setitem__(self, key, item):
 680                 dict.__setitem__(self, key, item)
 681                 if str(key) in self.stored_values:
 682                         item.saved_value = self.stored_values[str(key)]
 683                         item.load()
 684
 685 # Like the classes above, just with a more "native"
 686 # syntax.
 687 #
 688 # some evil stuff must be done to allow instant
 689 # loading of added elements. this is why this class
 690 # is so complex.
 691 #
 692 # we need the 'content' because we overwrite
 693 # __setattr__.
 694 # If you don't understand this, try adding
 695 # __setattr__ to a usual exisiting class and you will.
 696 class ConfigSubsection(object):
 697         def __init__(self):
 698                 object.__init__(self)
 699                 self.__dict__["content"] = ConfigSubsectionContent()
 700                 self.content.items = { }
 701                 self.content.stored_values = { }
 702
 703         def __setattr__(self, name, value):
 704                 if name == "saved_value":
 705                         return self.setSavedValue(value)
 706                 assert isinstance(value, ConfigSubsection) or isinstance(value, ConfigElement) or isinstance(value, ConfigSubList) or isinstance(value, ConfigSubDict), "ConfigSubsections can only store ConfigSubsections, ConfigSubLists, ConfigSubDicts or ConfigElements"
 707                 self.content.items[name] = value
 708                 if name in self.content.stored_values:
 709                         #print "ok, now we have a new item,", name, "and have the following value for it:", self.content.stored_values[name]
 710                         value.saved_value = self.content.stored_values[name]
 711                         value.load()
 712
 713         def __getattr__(self, name):
 714                 return self.content.items[name]
 715
 716         def getSavedValue(self):
 717                 res = self.content.stored_values
 718                 for (key, val) in self.content.items.items():
 719                         if val.saved_value is not None:
 720                                 res[key] = val.saved_value
 721                         elif key in res:
 722                                 del res[key]
 723
 724                 return res
 725
 726         def setSavedValue(self, values):
 727                 values = dict(values)
 728
 729                 self.content.stored_values = values
 730
 731                 for (key, val) in self.content.items.items():
 732                         if key in values:
 733                                 val.setSavedValue(values[key])
 734
 735         saved_value = property(getSavedValue, setSavedValue)
 736
 737         def save(self):
 738                 for x in self.content.items.values():
 739                         x.save()
 740
 741         def load(self):
 742                 for x in self.content.items.values():
 743                         x.load()
 744
 745 # the root config object, which also can "pickle" (=serialize)
 746 # down the whole config tree.
 747 #
 748 # we try to keep non-existing config entries, to apply them whenever
 749 # a new config entry is added to a subsection
 750 # also, non-existing config entries will be saved, so they won't be
 751 # lost when a config entry disappears.
 752 class Config(ConfigSubsection):
 753         def __init__(self):
 754                 ConfigSubsection.__init__(self)
 755
 756         def pickle_this(self, prefix, topickle, result):
 757                 for (key, val) in topickle.items():
 758                         name = prefix + "." + key
 759
 760                         if isinstance(val, dict):
 761                                 self.pickle_this(name, val, result)
 762                         elif isinstance(val, tuple):
 763                                 result.append(name + "=" + val[0]) # + " ; " + val[1])
 764                         else:
 765                                 result.append(name + "=" + val)
 766
 767         def pickle(self):
 768                 result = [ ]
 769                 self.pickle_this("config", self.saved_value, result)
 770                 return '\n'.join(result) + "\n"
 771
 772         def unpickle(self, lines):
 773                 tree = { }
 774                 for l in lines:
 775                         if not len(l) or l[0] == '#':
 776                                 continue
 777
 778                         n = l.find('=')
 779                         val = l[n+1:].strip()
 780
 781                         names = l[:n].split('.')
 782 #                       if val.find(' ') != -1:
 783 #                               val = val[:val.find(' ')]
 784
 785                         base = tree
 786
 787                         for n in names[:-1]:
 788                                 base = base.setdefault(n, {})
 789
 790                         base[names[-1]] = val
 791
 792                 # we inherit from ConfigSubsection, so ...
 793                 #object.__setattr__(self, "saved_value", tree["config"])
 794                 self.setSavedValue(tree["config"])
 795
 796         def saveToFile(self, filename):
 797                 f = open(filename, "w")
 798                 f.write(self.pickle())
 799                 f.close()
 800
 801         def loadFromFile(self, filename):
 802                 f = open(filename, "r")
 803                 self.unpickle(f.readlines())
 804                 f.close()
 805
 806 config = Config()
 807 config.misc = ConfigSubsection()
 808
 809 class ConfigFile:
 810         CONFIG_FILE = resolveFilename(SCOPE_CONFIG, "config2")
 811
 812         def load(self):
 813                 try:
 814                         config.loadFromFile(self.CONFIG_FILE)
 815                 except IOError, e:
 816                         print "unable to load config (%s), assuming defaults..." % str(e)
 817
 818         def save(self):
 819                 config.save()
 820                 config.saveToFile(self.CONFIG_FILE)
 821
 822         def getResolvedKey(self, key):
 823                 return None # FIXME
 824
 825 def NoSave(element):
 826         element.disableSave()
 827         return element
 828
 829 configfile = ConfigFile()
 830
 831 configfile.load()
 832
 833 def getConfigListEntry(desc, config):
 834         return (desc, config)
 835
 836 #def _(x):
 837 #       return x
 838 #
 839 #config.bla = ConfigSubsection()
 840 #config.bla.test = ConfigYesNo()
 841 #config.nim = ConfigSubList()
 842 #config.nim.append(ConfigSubsection())
 843 #config.nim[0].bla = ConfigYesNo()
 844 #config.nim.append(ConfigSubsection())
 845 #config.nim[1].bla = ConfigYesNo()
 846 #config.nim[1].blub = ConfigYesNo()
 847 #config.arg = ConfigSubDict()
 848 #config.arg["Hello"] = ConfigYesNo()
 849 #
 850 #config.arg["Hello"].handleKey(KEY_RIGHT)
 851 #config.arg["Hello"].handleKey(KEY_RIGHT)
 852 #
 853 ##config.saved_value
 854 #
 855 ##configfile.save()
 856 #config.save()
 857 #print config.pickle()