code.vuplus.com Git - vuplus_dvbapp/blob - 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, initial_call = True):
  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, though optional)
  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                 if initial_call:
  87                         notifier(self)
  88
  89         def disableSave(self):
  90                 self.save_disabled = True
  91
  92         def __call__(self, selected):
  93                 return self.getMulti(selected)
  94
  95         def helpWindow(self):
  96                 return None
  97
  98 KEY_LEFT = 0
  99 KEY_RIGHT = 1
 100 KEY_OK = 2
 101 KEY_DELETE = 3
 102 KEY_TIMEOUT = 4
 103 KEY_NUMBERS = range(12, 12+10)
 104 KEY_0 = 12
 105 KEY_9 = 12+9
 106
 107 def getKeyNumber(key):
 108         assert key in KEY_NUMBERS
 109         return key - KEY_0
 110
 111 #
 112 # ConfigSelection is a "one of.."-type.
 113 # it has the "choices", usually a list, which contains
 114 # (id, desc)-tuples (or just only the ids, in case the id
 115 # will be used as description)
 116 #
 117 # all ids MUST be plain strings.
 118 #
 119 class ConfigSelection(ConfigElement):
 120         def __init__(self, choices, default = None):
 121                 ConfigElement.__init__(self)
 122                 self.choices = []
 123                 self.description = {}
 124
 125                 if isinstance(choices, list):
 126                         for x in choices:
 127                                 if isinstance(x, tuple):
 128                                         self.choices.append(x[0])
 129                                         self.description[x[0]] = x[1]
 130                                 else:
 131                                         self.choices.append(x)
 132                                         self.description[x] = x
 133                 elif isinstance(choices, dict):
 134                         for (key, val) in choices.items():
 135                                 self.choices.append(key)
 136                                 self.description[key] = val
 137                 else:
 138                         assert False, "ConfigSelection choices must be dict or list!"
 139
 140                 #assert len(self.choices), "you can't have an empty configselection"
 141                 if len(self.choices) == 0:
 142                         self.choices = [""]
 143                         self.description[""] = ""
 144
 145                 if default is None:
 146                         default = self.choices[0]
 147
 148                 assert default in self.choices, "default must be in choice list, but " + repr(default) + " is not!"
 149                 for x in self.choices:
 150                         assert isinstance(x, str), "ConfigSelection choices must be strings"
 151
 152                 self.value = self.default = default
 153
 154         def setValue(self, value):
 155                 if value in self.choices:
 156                         self._value = value
 157                 else:
 158                         self._value = self.default
 159
 160                 self.changed()
 161
 162         def tostring(self, val):
 163                 return val
 164
 165         def getValue(self):
 166                 return self._value
 167
 168         def setCurrentText(self, text):
 169                 i = self.choices.index(self.value)
 170                 del self.description[self.choices[i]]
 171                 self.choices[i] = text
 172                 self.description[text] = text
 173                 self._value = text
 174
 175         value = property(getValue, setValue)
 176
 177         def getIndex(self):
 178                 return self.choices.index(self.value)
 179
 180         index = property(getIndex)
 181
 182         # GUI
 183         def handleKey(self, key):
 184                 nchoices = len(self.choices)
 185                 i = self.choices.index(self.value)
 186                 if key == KEY_LEFT:
 187                         self.value = self.choices[(i + nchoices - 1) % nchoices]
 188                 elif key == KEY_RIGHT:
 189                         self.value = self.choices[(i + 1) % nchoices]
 190
 191         def getMulti(self, selected):
 192                 return ("text", self.description[self.value])
 193
 194         # HTML
 195         def getHTML(self, id):
 196                 res = ""
 197                 for v in self.choices:
 198                         if self.value == v:
 199                                 checked = 'checked="checked" '
 200                         else:
 201                                 checked = ''
 202                         res += '<input type="radio" name="' + id + '" ' + checked + 'value="' + v + '">' + self.description[v] + "</input></br>\n"
 203                 return res;
 204
 205         def unsafeAssign(self, value):
 206                 # setValue does check if value is in choices. This is safe enough.
 207                 self.value = value
 208
 209 # a binary decision.
 210 #
 211 # several customized versions exist for different
 212 # descriptions.
 213 #
 214 class ConfigBoolean(ConfigElement):
 215         def __init__(self, default = False, descriptions = {False: "false", True: "true"}):
 216                 ConfigElement.__init__(self)
 217                 self.descriptions = descriptions
 218                 self.value = self.default = default
 219         def handleKey(self, key):
 220                 if key in [KEY_LEFT, KEY_RIGHT]:
 221                         self.value = not self.value
 222
 223         def getMulti(self, selected):
 224                 return ("text", _(self.descriptions[self.value]))
 225
 226         def tostring(self, value):
 227                 if not value:
 228                         return "false"
 229                 else:
 230                         return "true"
 231
 232         def fromstring(self, val):
 233                 if val == "true":
 234                         return True
 235                 else:
 236                         return False
 237
 238         def getHTML(self, id):
 239                 if self.value:
 240                         checked = ' checked="checked"'
 241                 else:
 242                         checked = ''
 243                 return '<input type="checkbox" name="' + id + '" value="1" ' + checked + " />"
 244
 245         # this is FLAWED. and must be fixed.
 246         def unsafeAssign(self, value):
 247                 if value == "1":
 248                         self.value = True
 249                 else:
 250                         self.value = False
 251
 252 class ConfigYesNo(ConfigBoolean):
 253         def __init__(self, default = False):
 254                 ConfigBoolean.__init__(self, default = default, descriptions = {False: _("no"), True: _("yes")})
 255
 256 class ConfigOnOff(ConfigBoolean):
 257         def __init__(self, default = False):
 258                 ConfigBoolean.__init__(self, default = default, descriptions = {False: _("off"), True: _("on")})
 259
 260 class ConfigEnableDisable(ConfigBoolean):
 261         def __init__(self, default = False):
 262                 ConfigBoolean.__init__(self, default = default, descriptions = {False: _("disable"), True: _("enable")})
 263
 264 class ConfigDateTime(ConfigElement):
 265         def __init__(self, default, formatstring, increment = 86400):
 266                 ConfigElement.__init__(self)
 267                 self.increment = increment
 268                 self.formatstring = formatstring
 269                 self.value = self.default = int(default)
 270
 271         def handleKey(self, key):
 272                 if key == KEY_LEFT:
 273                         self.value = self.value - self.increment
 274                 if key == KEY_RIGHT:
 275                         self.value = self.value + self.increment
 276
 277         def getMulti(self, selected):
 278                 return ("text", time.strftime(self.formatstring, time.localtime(self.value)))
 279
 280         def fromstring(self, val):
 281                 return int(val)
 282
 283 # *THE* mighty config element class
 284 #
 285 # allows you to store/edit a sequence of values.
 286 # can be used for IP-addresses, dates, plain integers, ...
 287 # several helper exist to ease this up a bit.
 288 #
 289 class ConfigSequence(ConfigElement):
 290         def __init__(self, seperator, limits, censor_char = "", default = None):
 291                 ConfigElement.__init__(self)
 292                 assert isinstance(limits, list) and len(limits[0]) == 2, "limits must be [(min, max),...]-tuple-list"
 293                 assert censor_char == "" or len(censor_char) == 1, "censor char must be a single char (or \"\")"
 294                 #assert isinstance(default, list), "default must be a list"
 295                 #assert isinstance(default[0], int), "list must contain numbers"
 296                 #assert len(default) == len(limits), "length must match"
 297
 298                 self.marked_pos = 0
 299                 self.seperator = seperator
 300                 self.limits = limits
 301                 self.censor_char = censor_char
 302
 303                 self.default = default
 304                 self.value = copy.copy(default)
 305
 306         def validate(self):
 307                 max_pos = 0
 308                 num = 0
 309                 for i in self._value:
 310                         max_pos += len(str(self.limits[num][1]))
 311
 312                         while self._value[num] < self.limits[num][0]:
 313                                 self.value[num] += 1
 314
 315                         while self._value[num] > self.limits[num][1]:
 316                                 self._value[num] -= 1
 317
 318                         num += 1
 319
 320                 if self.marked_pos >= max_pos:
 321                         self.marked_pos = max_pos - 1
 322
 323                 if self.marked_pos < 0:
 324                         self.marked_pos = 0
 325
 326         def validatePos(self):
 327                 if self.marked_pos < 0:
 328                         self.marked_pos = 0
 329
 330                 total_len = sum([len(str(x[1])) for x in self.limits])
 331
 332                 if self.marked_pos >= total_len:
 333                         self.marked_pos = total_len - 1
 334
 335         def handleKey(self, key):
 336                 if key == KEY_LEFT:
 337                         self.marked_pos -= 1
 338                         self.validatePos()
 339
 340                 if key == KEY_RIGHT:
 341                         self.marked_pos += 1
 342                         self.validatePos()
 343
 344                 if key in KEY_NUMBERS:
 345                         block_len = []
 346                         for x in self.limits:
 347                                 block_len.append(len(str(x[1])))
 348
 349                         total_len = sum(block_len)
 350
 351                         pos = 0
 352                         blocknumber = 0
 353                         block_len_total = [0, ]
 354                         for x in block_len:
 355                                 pos += block_len[blocknumber]
 356                                 block_len_total.append(pos)
 357                                 if pos - 1 >= self.marked_pos:
 358                                         pass
 359                                 else:
 360                                         blocknumber += 1
 361
 362                         number = getKeyNumber(key)
 363
 364                         # length of numberblock
 365                         number_len = len(str(self.limits[blocknumber][1]))
 366
 367                         # position in the block
 368                         posinblock = self.marked_pos - block_len_total[blocknumber]
 369
 370                         oldvalue = self._value[blocknumber]
 371                         olddec = oldvalue % 10 ** (number_len - posinblock) - (oldvalue % 10 ** (number_len - posinblock - 1))
 372                         newvalue = oldvalue - olddec + (10 ** (number_len - posinblock - 1) * number)
 373
 374                         self._value[blocknumber] = newvalue
 375                         self.marked_pos += 1
 376
 377                         self.validate()
 378                         self.changed()
 379
 380         def getMulti(self, selected):
 381                 value = ""
 382                 mPos = self.marked_pos
 383                 num = 0;
 384                 for i in self._value:
 385                         if len(value):  #fixme no heading separator possible
 386                                 value += self.seperator
 387                                 if mPos >= len(value) - 1:
 388                                         mPos += 1
 389
 390                         if self.censor_char == "":
 391                                 value += ("%0" + str(len(str(self.limits[num][1]))) + "d") % i
 392                         else:
 393                                 value += (self.censor_char * len(str(self.limits[num][1])))
 394                         num += 1
 395
 396                         # only mark cursor when we are selected
 397                         # (this code is heavily ink optimized!)
 398                 if self.enabled:
 399                         return ("mtext"[1-selected:], value, [mPos])
 400                 else:
 401                         return ("text", value)
 402
 403         def tostring(self, val):
 404                 return self.seperator.join([self.saveSingle(x) for x in val])
 405
 406         def saveSingle(self, v):
 407                 return str(v)
 408
 409         def fromstring(self, value):
 410                 return [int(x) for x in self.saved_value.split(self.seperator)]
 411
 412 class ConfigIP(ConfigSequence):
 413         def __init__(self, default):
 414                 ConfigSequence.__init__(self, seperator = ".", limits = [(0,255),(0,255),(0,255),(0,255)], default = default)
 415
 416 class ConfigMAC(ConfigSequence):
 417         def __init__(self, default):
 418                 ConfigSequence.__init__(self, seperator = ":", limits = [(1,255),(1,255),(1,255),(1,255),(1,255),(1,255)], default = default)
 419
 420 class ConfigPosition(ConfigSequence):
 421         def __init__(self, default, args):
 422                 ConfigSequence.__init__(self, seperator = ",", limits = [(0,args[0]),(0,args[1]),(0,args[2]),(0,args[3])], default = default)
 423
 424 class ConfigClock(ConfigSequence):
 425         def __init__(self, default):
 426                 import time
 427                 t = time.localtime(default)
 428                 ConfigSequence.__init__(self, seperator = ":", limits = [(0,23),(0,59)], default = [t.tm_hour, t.tm_min])
 429
 430 class ConfigInteger(ConfigSequence):
 431         def __init__(self, default, limits = (0, 10000000000)):
 432                 ConfigSequence.__init__(self, seperator = ":", limits = [limits], default = default)
 433
 434         # you need to override this to do input validation
 435         def setValue(self, value):
 436                 self._value = [value]
 437                 self.changed()
 438
 439         def getValue(self):
 440                 return self._value[0]
 441
 442         value = property(getValue, setValue)
 443
 444         def fromstring(self, value):
 445                 return int(value)
 446
 447         def tostring(self, value):
 448                 return str(value)
 449
 450 class ConfigPIN(ConfigInteger):
 451         def __init__(self, default, len = 4, censor = ""):
 452                 assert isinstance(default, int), "ConfigPIN default must be an integer"
 453                 if default == -1:
 454                         default = "aaaa"
 455                 ConfigSequence.__init__(self, seperator = ":", limits = [(0, (10**len)-1)], censor_char = censor, default = default)
 456                 self.len = len
 457
 458         def getLength(self):
 459                 return self.len
 460
 461 class ConfigFloat(ConfigSequence):
 462         def __init__(self, default, limits):
 463                 ConfigSequence.__init__(self, seperator = ".", limits = limits, default = default)
 464
 465         def getFloat(self):
 466                 return float(self.value[1] / float(self.limits[1][1] + 1) + self.value[0])
 467
 468         float = property(getFloat)
 469
 470 # an editable text...
 471 class ConfigText(ConfigElement, NumericalTextInput):
 472         def __init__(self, default = "", fixed_size = True):
 473                 ConfigElement.__init__(self)
 474                 NumericalTextInput.__init__(self, nextFunc = self.nextFunc, handleTimeout = False)
 475
 476                 self.marked_pos = 0
 477                 self.fixed_size = fixed_size
 478
 479                 self.value = self.default = default
 480
 481         def validateMarker(self):
 482                 if self.marked_pos < 0:
 483                         self.marked_pos = 0
 484                 if self.marked_pos >= len(self.text):
 485                         self.marked_pos = len(self.text) - 1
 486
 487         #def nextEntry(self):
 488         #       self.vals[1](self.getConfigPath())
 489
 490         def handleKey(self, key):
 491                 # this will no change anything on the value itself
 492                 # so we can handle it here in gui element
 493                 if key == KEY_DELETE:
 494                         self.text = self.text[0:self.marked_pos] + self.text[self.marked_pos + 1:]
 495                 elif key == KEY_LEFT:
 496                         self.marked_pos -= 1
 497                 elif key == KEY_RIGHT:
 498                         self.marked_pos += 1
 499                         if not self.fixed_size:
 500                                 if self.marked_pos >= len(self.text):
 501                                         self.text = self.text.ljust(len(self.text) + 1)
 502                 elif key in KEY_NUMBERS:
 503                         number = self.getKey(getKeyNumber(key))
 504                         self.text = self.text[0:self.marked_pos] + unicode(number) + self.text[self.marked_pos + 1:]
 505                 elif key == KEY_TIMEOUT:
 506                         self.timeout()
 507                         return
 508
 509                 self.validateMarker()
 510                 self.changed()
 511
 512         def nextFunc(self):
 513                 self.marked_pos += 1
 514                 self.validateMarker()
 515                 self.changed()
 516
 517         def getValue(self):
 518                 return self.text.encode("utf-8")
 519
 520         def setValue(self, val):
 521                 try:
 522                         self.text = val.decode("utf-8")
 523                 except UnicodeDecodeError:
 524                         self.text = val
 525                         print "Broken UTF8!"
 526
 527         value = property(getValue, setValue)
 528         _value = property(getValue, setValue)
 529
 530         def getMulti(self, selected):
 531                 return ("mtext"[1-selected:], self.value, [self.marked_pos])
 532
 533         def helpWindow(self):
 534                 from Screens.NumericalTextInputHelpDialog import NumericalTextInputHelpDialog
 535                 return (NumericalTextInputHelpDialog,self)
 536
 537         def getHTML(self, id):
 538                 return '<input type="text" name="' + id + '" value="' + self.value + '" /><br>\n'
 539
 540         def unsafeAssign(self, value):
 541                 self.value = str(value)
 542
 543 # a slider.
 544 class ConfigSlider(ConfigElement):
 545         def __init__(self, default = 0, increment = 1, limits = (0, 100)):
 546                 ConfigElement.__init__(self)
 547                 self.value = self.default = default
 548                 self.min = limits[0]
 549                 self.max = limits[1]
 550                 self.increment = increment
 551
 552         def checkValues(self):
 553                 if self.value < self.min:
 554                         self.value = self.min
 555
 556                 if self.value > self.max:
 557                         self.value = self.max
 558
 559         def handleKey(self, key):
 560                 if key == KEY_LEFT:
 561                         self.value -= self.increment
 562                 elif key == KEY_RIGHT:
 563                         self.value += self.increment
 564                 else:
 565                         return
 566
 567                 self.checkValues()
 568                 self.changed()
 569
 570         def getMulti(self, selected):
 571                 self.checkValues()
 572                 return ("slider", self.value, self.max)
 573
 574         def fromstring(self, value):
 575                 return int(value)
 576
 577 # a satlist. in fact, it's a ConfigSelection.
 578 class ConfigSatlist(ConfigSelection):
 579         def __init__(self, list, default = None):
 580                 if default is not None:
 581                         default = str(default)
 582                 ConfigSelection.__init__(self, choices = [(str(orbpos), desc) for (orbpos, desc) in list], default = default)
 583
 584         def getOrbitalPosition(self):
 585                 if self.value == "":
 586                         return None
 587                 return int(self.value)
 588
 589         orbital_position = property(getOrbitalPosition)
 590
 591 # nothing.
 592 class ConfigNothing(ConfigSelection):
 593         def __init__(self):
 594                 ConfigSelection.__init__(self, choices = [""])
 595
 596 # until here, 'saved_value' always had to be a *string*.
 597 # now, in ConfigSubsection, and only there, saved_value
 598 # is a dict, essentially forming a tree.
 599 #
 600 # config.foo.bar=True
 601 # config.foobar=False
 602 #
 603 # turns into:
 604 # config.saved_value == {"foo": {"bar": "True"}, "foobar": "False"}
 605 #
 606
 607
 608 class ConfigSubsectionContent(object):
 609         pass
 610
 611 # we store a backup of the loaded configuration
 612 # data in self.stored_values, to be able to deploy
 613 # them when a new config element will be added,
 614 # so non-default values are instantly available
 615
 616 # A list, for example:
 617 # config.dipswitches = ConfigSubList()
 618 # config.dipswitches.append(ConfigYesNo())
 619 # config.dipswitches.append(ConfigYesNo())
 620 # config.dipswitches.append(ConfigYesNo())
 621 class ConfigSubList(list, object):
 622         def __init__(self):
 623                 object.__init__(self)
 624                 list.__init__(self)
 625                 self.stored_values = {}
 626
 627         def save(self):
 628                 for x in self:
 629                         x.save()
 630
 631         def load(self):
 632                 for x in self:
 633                         x.load()
 634
 635         def getSavedValue(self):
 636                 res = {}
 637                 for i in range(len(self)):
 638                         sv = self[i].saved_value
 639                         if sv is not None:
 640                                 res[str(i)] = sv
 641                 return res
 642
 643         def setSavedValue(self, values):
 644                 self.stored_values = dict(values)
 645                 for (key, val) in self.stored_values.items():
 646                         if int(key) < len(self):
 647                                 self[int(key)].saved_value = val
 648
 649         saved_value = property(getSavedValue, setSavedValue)
 650
 651         def append(self, item):
 652                 i = str(len(self))
 653                 list.append(self, item)
 654                 if i in self.stored_values:
 655                         item.saved_value = self.stored_values[i]
 656                         item.load()
 657
 658 # same as ConfigSubList, just as a dictionary.
 659 # care must be taken that the 'key' has a proper
 660 # str() method, because it will be used in the config
 661 # file.
 662 class ConfigSubDict(dict, object):
 663         def __init__(self):
 664                 object.__init__(self)
 665                 dict.__init__(self)
 666                 self.stored_values = {}
 667
 668         def save(self):
 669                 for x in self.values():
 670                         x.save()
 671
 672         def load(self):
 673                 for x in self.values():
 674                         x.load()
 675
 676         def getSavedValue(self):
 677                 res = {}
 678                 for (key, val) in self.items():
 679                         if val.saved_value is not None:
 680                                 res[str(key)] = val.saved_value
 681                 return res
 682
 683         def setSavedValue(self, values):
 684                 self.stored_values = dict(values)
 685                 for (key, val) in self.items():
 686                         if str(key) in self.stored_values:
 687                                 val = self.stored_values[str(key)]
 688
 689         saved_value = property(getSavedValue, setSavedValue)
 690
 691         def __setitem__(self, key, item):
 692                 dict.__setitem__(self, key, item)
 693                 if str(key) in self.stored_values:
 694                         item.saved_value = self.stored_values[str(key)]
 695                         item.load()
 696
 697 # Like the classes above, just with a more "native"
 698 # syntax.
 699 #
 700 # some evil stuff must be done to allow instant
 701 # loading of added elements. this is why this class
 702 # is so complex.
 703 #
 704 # we need the 'content' because we overwrite
 705 # __setattr__.
 706 # If you don't understand this, try adding
 707 # __setattr__ to a usual exisiting class and you will.
 708 class ConfigSubsection(object):
 709         def __init__(self):
 710                 object.__init__(self)
 711                 self.__dict__["content"] = ConfigSubsectionContent()
 712                 self.content.items = { }
 713                 self.content.stored_values = { }
 714
 715         def __setattr__(self, name, value):
 716                 if name == "saved_value":
 717                         return self.setSavedValue(value)
 718                 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"
 719                 self.content.items[name] = value
 720                 if name in self.content.stored_values:
 721                         #print "ok, now we have a new item,", name, "and have the following value for it:", self.content.stored_values[name]
 722                         value.saved_value = self.content.stored_values[name]
 723                         value.load()
 724
 725         def __getattr__(self, name):
 726                 return self.content.items[name]
 727
 728         def getSavedValue(self):
 729                 res = self.content.stored_values
 730                 for (key, val) in self.content.items.items():
 731                         if val.saved_value is not None:
 732                                 res[key] = val.saved_value
 733                         elif key in res:
 734                                 del res[key]
 735
 736                 return res
 737
 738         def setSavedValue(self, values):
 739                 values = dict(values)
 740
 741                 self.content.stored_values = values
 742
 743                 for (key, val) in self.content.items.items():
 744                         if key in values:
 745                                 val.setSavedValue(values[key])
 746
 747         saved_value = property(getSavedValue, setSavedValue)
 748
 749         def save(self):
 750                 for x in self.content.items.values():
 751                         x.save()
 752
 753         def load(self):
 754                 for x in self.content.items.values():
 755                         x.load()
 756
 757 # the root config object, which also can "pickle" (=serialize)
 758 # down the whole config tree.
 759 #
 760 # we try to keep non-existing config entries, to apply them whenever
 761 # a new config entry is added to a subsection
 762 # also, non-existing config entries will be saved, so they won't be
 763 # lost when a config entry disappears.
 764 class Config(ConfigSubsection):
 765         def __init__(self):
 766                 ConfigSubsection.__init__(self)
 767
 768         def pickle_this(self, prefix, topickle, result):
 769                 for (key, val) in topickle.items():
 770                         name = prefix + "." + key
 771
 772                         if isinstance(val, dict):
 773                                 self.pickle_this(name, val, result)
 774                         elif isinstance(val, tuple):
 775                                 result.append(name + "=" + val[0]) # + " ; " + val[1])
 776                         else:
 777                                 result.append(name + "=" + val)
 778
 779         def pickle(self):
 780                 result = [ ]
 781                 self.pickle_this("config", self.saved_value, result)
 782                 return '\n'.join(result) + "\n"
 783
 784         def unpickle(self, lines):
 785                 tree = { }
 786                 for l in lines:
 787                         if not len(l) or l[0] == '#':
 788                                 continue
 789
 790                         n = l.find('=')
 791                         val = l[n+1:].strip()
 792
 793                         names = l[:n].split('.')
 794 #                       if val.find(' ') != -1:
 795 #                               val = val[:val.find(' ')]
 796
 797                         base = tree
 798
 799                         for n in names[:-1]:
 800                                 base = base.setdefault(n, {})
 801
 802                         base[names[-1]] = val
 803
 804                 # we inherit from ConfigSubsection, so ...
 805                 #object.__setattr__(self, "saved_value", tree["config"])
 806                 if "config" in tree:
 807                         self.setSavedValue(tree["config"])
 808
 809         def saveToFile(self, filename):
 810                 f = open(filename, "w")
 811                 f.write(self.pickle())
 812                 f.close()
 813
 814         def loadFromFile(self, filename):
 815                 f = open(filename, "r")
 816                 self.unpickle(f.readlines())
 817                 f.close()
 818
 819 config = Config()
 820 config.misc = ConfigSubsection()
 821
 822 class ConfigFile:
 823         CONFIG_FILE = resolveFilename(SCOPE_CONFIG, "settings")
 824
 825         def load(self):
 826                 try:
 827                         config.loadFromFile(self.CONFIG_FILE)
 828                 except IOError, e:
 829                         print "unable to load config (%s), assuming defaults..." % str(e)
 830
 831         def save(self):
 832                 config.save()
 833                 config.saveToFile(self.CONFIG_FILE)
 834
 835         def __resolveValue(self, pickles, cmap):
 836                 if cmap.has_key(pickles[0]):
 837                         if len(pickles) > 1:
 838                                 return self.__resolveValue(pickles[1:], cmap[pickles[0]].content.items)
 839                         else:
 840                                 return str(cmap[pickles[0]].value)
 841                 return None
 842
 843         def getResolvedKey(self, key):
 844                 names = key.split('.')
 845                 if len(names) > 1:
 846                         if names[0] == "config":
 847                                 ret=self.__resolveValue(names[1:], config.content.items)
 848                                 if ret and len(ret):
 849                                         return ret
 850                 print "getResolvedKey", key, "failed !! (Typo??)"
 851                 return ""
 852
 853 def NoSave(element):
 854         element.disableSave()
 855         return element
 856
 857 configfile = ConfigFile()
 858
 859 configfile.load()
 860
 861 def getConfigListEntry(desc, config):
 862         return (desc, config)
 863
 864 #def _(x):
 865 #       return x
 866 #
 867 #config.bla = ConfigSubsection()
 868 #config.bla.test = ConfigYesNo()
 869 #config.nim = ConfigSubList()
 870 #config.nim.append(ConfigSubsection())
 871 #config.nim[0].bla = ConfigYesNo()
 872 #config.nim.append(ConfigSubsection())
 873 #config.nim[1].bla = ConfigYesNo()
 874 #config.nim[1].blub = ConfigYesNo()
 875 #config.arg = ConfigSubDict()
 876 #config.arg["Hello"] = ConfigYesNo()
 877 #
 878 #config.arg["Hello"].handleKey(KEY_RIGHT)
 879 #config.arg["Hello"].handleKey(KEY_RIGHT)
 880 #
 881 ##config.saved_value
 882 #
 883 ##configfile.save()
 884 #config.save()
 885 #print config.pickle()