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

   1 import time
   2 from enigma import getPrevAsciiCode
   3 from Tools.NumericalTextInput import NumericalTextInput
   4 from Tools.Directories import resolveFilename, SCOPE_CONFIG
   5 import copy
   6
   7
   8 # ConfigElement, the base class of all ConfigElements.
   9
  10 # it stores:
  11 #   value    the current value, usefully encoded.
  12 #            usually a property which retrieves _value,
  13 #            and maybe does some reformatting
  14 #   _value   the value as it's going to be saved in the configfile,
  15 #            though still in non-string form.
  16 #            this is the object which is actually worked on.
  17 #   default  the initial value. If _value is equal to default,
  18 #            it will not be stored in the config file
  19 #   saved_value is a text representation of _value, stored in the config file
  20 #
  21 # and has (at least) the following methods:
  22 #   save()   stores _value into saved_value,
  23 #            (or stores 'None' if it should not be stored)
  24 #   load()   loads _value from saved_value, or loads
  25 #            the default if saved_value is 'None' (default)
  26 #            or invalid.
  27 #
  28 class ConfigElement(object):
  29         def __init__(self):
  30
  31                 object.__init__(self)
  32                 self.saved_value = None
  33                 self.save_disabled = False
  34                 self.notifiers = []
  35                 self.enabled = True
  36
  37         # you need to override this to do input validation
  38         def setValue(self, value):
  39                 self._value = value
  40                 self.changed()
  41
  42         def getValue(self):
  43                 return self._value
  44
  45         value = property(getValue, setValue)
  46
  47         # you need to override this if self.value is not a string
  48         def fromstring(self, value):
  49                 return value
  50
  51         # you can overide this for fancy default handling
  52         def load(self):
  53                 if self.saved_value is None:
  54                         self.value = self.default
  55                 else:
  56                         self.value = self.fromstring(self.saved_value)
  57
  58         def tostring(self, value):
  59                 return str(value)
  60
  61         # you need to override this if str(self.value) doesn't work
  62         def save(self):
  63                 if self.save_disabled or self.value == self.default:
  64                         self.saved_value = None
  65                 else:
  66                         self.saved_value = self.tostring(self.value)
  67
  68         def cancel(self):
  69                 self.load()
  70
  71         def isChanged(self):
  72                 if self.saved_value is None and self.value == self.default:
  73                         return False
  74                 return self.tostring(self.value) != self.saved_value
  75
  76         def changed(self):
  77                 for x in self.notifiers:
  78                         x(self)
  79
  80         def addNotifier(self, notifier, initial_call = True):
  81                 assert callable(notifier), "notifiers must be callable"
  82                 self.notifiers.append(notifier)
  83
  84                 # CHECKME:
  85                 # do we want to call the notifier
  86                 #  - at all when adding it? (yes, though optional)
  87                 #  - when the default is active? (yes)
  88                 #  - when no value *yet* has been set,
  89                 #    because no config has ever been read (currently yes)
  90                 #    (though that's not so easy to detect.
  91                 #     the entry could just be new.)
  92                 if initial_call:
  93                         notifier(self)
  94
  95         def disableSave(self):
  96                 self.save_disabled = True
  97
  98         def __call__(self, selected):
  99                 return self.getMulti(selected)
 100
 101         def helpWindow(self):
 102                 return None
 103
 104 KEY_LEFT = 0
 105 KEY_RIGHT = 1
 106 KEY_OK = 2
 107 KEY_DELETE = 3
 108 KEY_BACKSPACE = 4
 109 KEY_HOME = 5
 110 KEY_END = 6
 111 KEY_TOGGLEOW = 7
 112 KEY_ASCII = 8
 113 KEY_TIMEOUT = 9
 114 KEY_NUMBERS = range(12, 12+10)
 115 KEY_0 = 12
 116 KEY_9 = 12+9
 117
 118 def getKeyNumber(key):
 119         assert key in KEY_NUMBERS
 120         return key - KEY_0
 121
 122 #
 123 # ConfigSelection is a "one of.."-type.
 124 # it has the "choices", usually a list, which contains
 125 # (id, desc)-tuples (or just only the ids, in case the id
 126 # will be used as description)
 127 #
 128 # all ids MUST be plain strings.
 129 #
 130 class ConfigSelection(ConfigElement):
 131         def __init__(self, choices, default = None):
 132                 ConfigElement.__init__(self)
 133                 self.choices = []
 134                 self.description = {}
 135
 136                 if isinstance(choices, list):
 137                         for x in choices:
 138                                 if isinstance(x, tuple):
 139                                         self.choices.append(x[0])
 140                                         self.description[x[0]] = x[1]
 141                                 else:
 142                                         self.choices.append(x)
 143                                         self.description[x] = x
 144                 elif isinstance(choices, dict):
 145                         for (key, val) in choices.items():
 146                                 self.choices.append(key)
 147                                 self.description[key] = val
 148                 else:
 149                         assert False, "ConfigSelection choices must be dict or list!"
 150
 151                 #assert len(self.choices), "you can't have an empty configselection"
 152                 if len(self.choices) == 0:
 153                         self.choices = [""]
 154                         self.description[""] = ""
 155
 156                 if default is None:
 157                         default = self.choices[0]
 158
 159                 assert default in self.choices, "default must be in choice list, but " + repr(default) + " is not!"
 160                 for x in self.choices:
 161                         assert isinstance(x, str), "ConfigSelection choices must be strings"
 162
 163                 self.value = self.default = default
 164
 165         def setValue(self, value):
 166                 if value in self.choices:
 167                         self._value = value
 168                 else:
 169                         self._value = self.default
 170
 171                 self.changed()
 172
 173         def tostring(self, val):
 174                 return val
 175
 176         def getValue(self):
 177                 return self._value
 178
 179         def setCurrentText(self, text):
 180                 i = self.choices.index(self.value)
 181                 del self.description[self.choices[i]]
 182                 self.choices[i] = text
 183                 self.description[text] = text
 184                 self._value = text
 185
 186         value = property(getValue, setValue)
 187
 188         def getIndex(self):
 189                 return self.choices.index(self.value)
 190
 191         index = property(getIndex)
 192
 193         # GUI
 194         def handleKey(self, key):
 195                 nchoices = len(self.choices)
 196                 i = self.choices.index(self.value)
 197                 if key == KEY_LEFT:
 198                         self.value = self.choices[(i + nchoices - 1) % nchoices]
 199                 elif key == KEY_RIGHT:
 200                         self.value = self.choices[(i + 1) % nchoices]
 201                 elif key == KEY_HOME:
 202                         self.value = self.choices[0]
 203                 elif key == KEY_END:
 204                         self.value = self.choices[nchoices - 1]
 205
 206         def getText(self):
 207                 descr = self.description[self.value]
 208                 if len(descr):
 209                         return _(descr)
 210                 return descr
 211
 212         def getMulti(self, selected):
 213                 descr = self.description[self.value]
 214                 if len(descr):
 215                         return ("text", _(descr))
 216                 return ("text", descr)
 217
 218         # HTML
 219         def getHTML(self, id):
 220                 res = ""
 221                 for v in self.choices:
 222                         if self.value == v:
 223                                 checked = 'checked="checked" '
 224                         else:
 225                                 checked = ''
 226                         res += '<input type="radio" name="' + id + '" ' + checked + 'value="' + v + '">' + self.description[v] + "</input></br>\n"
 227                 return res;
 228
 229         def unsafeAssign(self, value):
 230                 # setValue does check if value is in choices. This is safe enough.
 231                 self.value = value
 232
 233 # a binary decision.
 234 #
 235 # several customized versions exist for different
 236 # descriptions.
 237 #
 238 class ConfigBoolean(ConfigElement):
 239         def __init__(self, default = False, descriptions = {False: "false", True: "true"}):
 240                 ConfigElement.__init__(self)
 241                 self.descriptions = descriptions
 242                 self.value = self.default = default
 243         def handleKey(self, key):
 244                 if key in [KEY_LEFT, KEY_RIGHT]:
 245                         self.value = not self.value
 246                 elif key == KEY_HOME:
 247                         self.value = False
 248                 elif key == KEY_END:
 249                         self.value = True
 250
 251         def getText(self):
 252                 descr = self.descriptions[self.value]
 253                 if len(descr):
 254                         return _(descr)
 255                 return descr
 256
 257         def getMulti(self, selected):
 258                 descr = self.descriptions[self.value]
 259                 if len(descr):
 260                         return ("text", _(descr))
 261                 return ("text", descr)
 262
 263         def tostring(self, value):
 264                 if not value:
 265                         return "false"
 266                 else:
 267                         return "true"
 268
 269         def fromstring(self, val):
 270                 if val == "true":
 271                         return True
 272                 else:
 273                         return False
 274
 275         def getHTML(self, id):
 276                 if self.value:
 277                         checked = ' checked="checked"'
 278                 else:
 279                         checked = ''
 280                 return '<input type="checkbox" name="' + id + '" value="1" ' + checked + " />"
 281
 282         # this is FLAWED. and must be fixed.
 283         def unsafeAssign(self, value):
 284                 if value == "1":
 285                         self.value = True
 286                 else:
 287                         self.value = False
 288
 289 class ConfigYesNo(ConfigBoolean):
 290         def __init__(self, default = False):
 291                 ConfigBoolean.__init__(self, default = default, descriptions = {False: _("no"), True: _("yes")})
 292
 293 class ConfigOnOff(ConfigBoolean):
 294         def __init__(self, default = False):
 295                 ConfigBoolean.__init__(self, default = default, descriptions = {False: _("off"), True: _("on")})
 296
 297 class ConfigEnableDisable(ConfigBoolean):
 298         def __init__(self, default = False):
 299                 ConfigBoolean.__init__(self, default = default, descriptions = {False: _("disable"), True: _("enable")})
 300
 301 class ConfigDateTime(ConfigElement):
 302         def __init__(self, default, formatstring, increment = 86400):
 303                 ConfigElement.__init__(self)
 304                 self.increment = increment
 305                 self.formatstring = formatstring
 306                 self.value = self.default = int(default)
 307
 308         def handleKey(self, key):
 309                 if key == KEY_LEFT:
 310                         self.value = self.value - self.increment
 311                 elif key == KEY_RIGHT:
 312                         self.value = self.value + self.increment
 313                 elif key == KEY_HOME or key == KEY_END:
 314                         self.value = self.default
 315
 316         def getText(self):
 317                 return time.strftime(self.formatstring, time.localtime(self.value))
 318
 319         def getMulti(self, selected):
 320                 return ("text", time.strftime(self.formatstring, time.localtime(self.value)))
 321
 322         def fromstring(self, val):
 323                 return int(val)
 324
 325 # *THE* mighty config element class
 326 #
 327 # allows you to store/edit a sequence of values.
 328 # can be used for IP-addresses, dates, plain integers, ...
 329 # several helper exist to ease this up a bit.
 330 #
 331 class ConfigSequence(ConfigElement):
 332         def __init__(self, seperator, limits, censor_char = "", default = None):
 333                 ConfigElement.__init__(self)
 334                 assert isinstance(limits, list) and len(limits[0]) == 2, "limits must be [(min, max),...]-tuple-list"
 335                 assert censor_char == "" or len(censor_char) == 1, "censor char must be a single char (or \"\")"
 336                 #assert isinstance(default, list), "default must be a list"
 337                 #assert isinstance(default[0], int), "list must contain numbers"
 338                 #assert len(default) == len(limits), "length must match"
 339
 340                 self.marked_pos = 0
 341                 self.seperator = seperator
 342                 self.limits = limits
 343                 self.censor_char = censor_char
 344
 345                 self.default = default
 346                 self.value = copy.copy(default)
 347
 348                 self.endNotifier = []
 349
 350         def validate(self):
 351                 max_pos = 0
 352                 num = 0
 353                 for i in self._value:
 354                         max_pos += len(str(self.limits[num][1]))
 355
 356                         while self._value[num] < self.limits[num][0]:
 357                                 self._value[num] += 1
 358
 359                         while self._value[num] > self.limits[num][1]:
 360                                 self._value[num] -= 1
 361
 362                         num += 1
 363
 364                 if self.marked_pos >= max_pos:
 365                         for x in self.endNotifier:
 366                                 x(self)
 367                         self.marked_pos = max_pos - 1
 368
 369                 if self.marked_pos < 0:
 370                         self.marked_pos = 0
 371
 372         def validatePos(self):
 373                 if self.marked_pos < 0:
 374                         self.marked_pos = 0
 375
 376                 total_len = sum([len(str(x[1])) for x in self.limits])
 377
 378                 if self.marked_pos >= total_len:
 379                         self.marked_pos = total_len - 1
 380
 381         def addEndNotifier(self, notifier):
 382                 self.endNotifier.append(notifier)
 383
 384         def handleKey(self, key):
 385                 if key == KEY_LEFT:
 386                         self.marked_pos -= 1
 387                         self.validatePos()
 388
 389                 if key == KEY_RIGHT:
 390                         self.marked_pos += 1
 391                         self.validatePos()
 392
 393                 if key == KEY_HOME:
 394                         self.marked_pos = 0
 395                         self.validatePos()
 396
 397                 if key == KEY_END:
 398                         max_pos = 0
 399                         num = 0
 400                         for i in self._value:
 401                                 max_pos += len(str(self.limits[num][1]))
 402                                 num += 1
 403                         self.marked_pos = max_pos - 1
 404                         self.validatePos()
 405
 406                 if key in KEY_NUMBERS or key == KEY_ASCII:
 407                         if key == KEY_ASCII:
 408                                 code = getPrevAsciiCode()
 409                                 if code < 48 or code > 57:
 410                                         return
 411                                 number = code - 48
 412                         else:
 413                                 number = getKeyNumber(key)
 414
 415                         block_len = []
 416                         for x in self.limits:
 417                                 block_len.append(len(str(x[1])))
 418
 419                         total_len = sum(block_len)
 420
 421                         pos = 0
 422                         blocknumber = 0
 423                         block_len_total = [0, ]
 424                         for x in block_len:
 425                                 pos += block_len[blocknumber]
 426                                 block_len_total.append(pos)
 427                                 if pos - 1 >= self.marked_pos:
 428                                         pass
 429                                 else:
 430                                         blocknumber += 1
 431
 432                         # length of numberblock
 433                         number_len = len(str(self.limits[blocknumber][1]))
 434
 435                         # position in the block
 436                         posinblock = self.marked_pos - block_len_total[blocknumber]
 437
 438                         oldvalue = self._value[blocknumber]
 439                         olddec = oldvalue % 10 ** (number_len - posinblock) - (oldvalue % 10 ** (number_len - posinblock - 1))
 440                         newvalue = oldvalue - olddec + (10 ** (number_len - posinblock - 1) * number)
 441
 442                         self._value[blocknumber] = newvalue
 443                         self.marked_pos += 1
 444
 445                         self.validate()
 446                         self.changed()
 447
 448         def genText(self):
 449                 value = ""
 450                 mPos = self.marked_pos
 451                 num = 0;
 452                 for i in self._value:
 453                         if len(value):  #fixme no heading separator possible
 454                                 value += self.seperator
 455                                 if mPos >= len(value) - 1:
 456                                         mPos += 1
 457
 458                         if self.censor_char == "":
 459                                 value += ("%0" + str(len(str(self.limits[num][1]))) + "d") % i
 460                         else:
 461                                 value += (self.censor_char * len(str(self.limits[num][1])))
 462                         num += 1
 463                 return (value, mPos)
 464
 465         def getText(self):
 466                 (value, mPos) = self.genText()
 467                 return value
 468
 469         def getMulti(self, selected):
 470                 (value, mPos) = self.genText()
 471                         # only mark cursor when we are selected
 472                         # (this code is heavily ink optimized!)
 473                 if self.enabled:
 474                         return ("mtext"[1-selected:], value, [mPos])
 475                 else:
 476                         return ("text", value)
 477
 478         def tostring(self, val):
 479                 return self.seperator.join([self.saveSingle(x) for x in val])
 480
 481         def saveSingle(self, v):
 482                 return str(v)
 483
 484         def fromstring(self, value):
 485                 return [int(x) for x in value.split(self.seperator)]
 486
 487 class ConfigIP(ConfigSequence):
 488         def __init__(self, default):
 489                 ConfigSequence.__init__(self, seperator = ".", limits = [(0,255),(0,255),(0,255),(0,255)], default = default)
 490
 491         def getHTML(self, id):
 492                 # we definitely don't want leading zeros
 493                 return '.'.join(["%d" % d for d in self.value])
 494
 495 class ConfigMAC(ConfigSequence):
 496         def __init__(self, default):
 497                 ConfigSequence.__init__(self, seperator = ":", limits = [(1,255),(1,255),(1,255),(1,255),(1,255),(1,255)], default = default)
 498
 499 class ConfigPosition(ConfigSequence):
 500         def __init__(self, default, args):
 501                 ConfigSequence.__init__(self, seperator = ",", limits = [(0,args[0]),(0,args[1]),(0,args[2]),(0,args[3])], default = default)
 502
 503 class ConfigClock(ConfigSequence):
 504         def __init__(self, default):
 505                 import time
 506                 t = time.localtime(default)
 507                 ConfigSequence.__init__(self, seperator = ":", limits = [(0,23),(0,59)], default = [t.tm_hour, t.tm_min])
 508
 509 class ConfigInteger(ConfigSequence):
 510         def __init__(self, default, limits = (0, 10000000000)):
 511                 ConfigSequence.__init__(self, seperator = ":", limits = [limits], default = default)
 512
 513         # you need to override this to do input validation
 514         def setValue(self, value):
 515                 self._value = [value]
 516                 self.changed()
 517
 518         def getValue(self):
 519                 return self._value[0]
 520
 521         value = property(getValue, setValue)
 522
 523         def fromstring(self, value):
 524                 return int(value)
 525
 526         def tostring(self, value):
 527                 return str(value)
 528
 529 class ConfigPIN(ConfigInteger):
 530         def __init__(self, default, len = 4, censor = ""):
 531                 assert isinstance(default, int), "ConfigPIN default must be an integer"
 532                 if default == -1:
 533                         default = "aaaa"
 534                 ConfigSequence.__init__(self, seperator = ":", limits = [(0, (10**len)-1)], censor_char = censor, default = default)
 535                 self.len = len
 536
 537         def getLength(self):
 538                 return self.len
 539
 540 class ConfigFloat(ConfigSequence):
 541         def __init__(self, default, limits):
 542                 ConfigSequence.__init__(self, seperator = ".", limits = limits, default = default)
 543
 544         def getFloat(self):
 545                 return float(self.value[1] / float(self.limits[1][1] + 1) + self.value[0])
 546
 547         float = property(getFloat)
 548
 549 # an editable text...
 550 class ConfigText(ConfigElement, NumericalTextInput):
 551         def __init__(self, default = "", fixed_size = True, visible_width = False):
 552                 ConfigElement.__init__(self)
 553                 NumericalTextInput.__init__(self, nextFunc = self.nextFunc, handleTimeout = False)
 554
 555                 self.marked_pos = 0
 556                 self.allmarked = (default != "")
 557                 self.fixed_size = fixed_size
 558                 self.visible_width = visible_width
 559                 self.offset = 0
 560                 self.overwrite = fixed_size
 561
 562                 self.value = self.default = default
 563
 564         def validateMarker(self):
 565                 if self.fixed_size:
 566                         if self.marked_pos > len(self.text)-1:
 567                                 self.marked_pos = len(self.text)-1
 568                 else:
 569                         if self.marked_pos > len(self.text):
 570                                 self.marked_pos = len(self.text)
 571                 if self.marked_pos < 0:
 572                         self.marked_pos = 0
 573                 if self.visible_width:
 574                         if self.marked_pos < self.offset:
 575                                 self.offset = self.marked_pos
 576                         if self.marked_pos >= self.offset + self.visible_width:
 577                                 if self.marked_pos == len(self.text):
 578                                         self.offset = self.marked_pos - self.visible_width
 579                                 else:
 580                                         self.offset = self.marked_pos - self.visible_width + 1
 581                         if self.offset > 0 and self.offset + self.visible_width > len(self.text):
 582                                 self.offset = max(0, len(self.text) - self.visible_width)
 583
 584         def insertChar(self, ch, pos, owr):
 585                 if owr or self.overwrite:
 586                         self.text = self.text[0:pos] + ch + self.text[pos + 1:]
 587                 elif self.fixed_size:
 588                         self.text = self.text[0:pos] + ch + self.text[pos:-1]
 589                 else:
 590                         self.text = self.text[0:pos] + ch + self.text[pos:]
 591
 592         def deleteChar(self, pos):
 593                 if not self.fixed_size:
 594                         self.text = self.text[0:pos] + self.text[pos + 1:]
 595                 elif self.overwrite:
 596                         self.text = self.text[0:pos] + " " + self.text[pos + 1:]
 597                 else:
 598                         self.text = self.text[0:pos] + self.text[pos + 1:] + " "
 599
 600         def deleteAllChars(self):
 601                 if self.fixed_size:
 602                         self.text = " " * len(self.text)
 603                 else:
 604                         self.text = ""
 605                 self.marked_pos = 0
 606
 607         def handleKey(self, key):
 608                 # this will no change anything on the value itself
 609                 # so we can handle it here in gui element
 610                 if key == KEY_DELETE:
 611                         self.timeout()
 612                         if self.allmarked:
 613                                 self.deleteAllChars()
 614                                 self.allmarked = False
 615                         else:
 616                                 self.deleteChar(self.marked_pos)
 617                                 if self.fixed_size and self.overwrite:
 618                                         self.marked_pos += 1
 619                 elif key == KEY_BACKSPACE:
 620                         self.timeout()
 621                         if self.allmarked:
 622                                 self.deleteAllChars()
 623                                 self.allmarked = False
 624                         elif self.marked_pos > 0:
 625                                 self.deleteChar(self.marked_pos-1)
 626                                 if not self.fixed_size and self.offset > 0:
 627                                         self.offset -= 1
 628                                 self.marked_pos -= 1
 629                 elif key == KEY_LEFT:
 630                         self.timeout()
 631                         if self.allmarked:
 632                                 self.marked_pos = len(self.text)
 633                                 self.allmarked = False
 634                         else:
 635                                 self.marked_pos -= 1
 636                 elif key == KEY_RIGHT:
 637                         self.timeout()
 638                         if self.allmarked:
 639                                 self.marked_pos = 0
 640                                 self.allmarked = False
 641                         else:
 642                                 self.marked_pos += 1
 643                 elif key == KEY_HOME:
 644                         self.timeout()
 645                         self.allmarked = False
 646                         self.marked_pos = 0
 647                 elif key == KEY_END:
 648                         self.timeout()
 649                         self.allmarked = False
 650                         self.marked_pos = len(self.text)
 651                 elif key == KEY_TOGGLEOW:
 652                         self.timeout()
 653                         self.overwrite = not self.overwrite
 654                 elif key == KEY_ASCII:
 655                         self.timeout()
 656                         newChar = unichr(getPrevAsciiCode())
 657                         if self.allmarked:
 658                                 self.deleteAllChars()
 659                                 self.allmarked = False
 660                         self.insertChar(newChar, self.marked_pos, False)
 661                         self.marked_pos += 1
 662                 elif key in KEY_NUMBERS:
 663                         owr = self.lastKey == getKeyNumber(key)
 664                         newChar = self.getKey(getKeyNumber(key))
 665                         if self.allmarked:
 666                                 self.deleteAllChars()
 667                                 self.allmarked = False
 668                         self.insertChar(newChar, self.marked_pos, owr)
 669                 elif key == KEY_TIMEOUT:
 670                         self.timeout()
 671                         return
 672
 673                 self.validateMarker()
 674                 self.changed()
 675
 676         def nextFunc(self):
 677                 self.marked_pos += 1
 678                 self.validateMarker()
 679                 self.changed()
 680
 681         def getValue(self):
 682                 return self.text.encode("utf-8")
 683
 684         def setValue(self, val):
 685                 try:
 686                         self.text = val.decode("utf-8")
 687                 except UnicodeDecodeError:
 688                         self.text = val
 689                         print "Broken UTF8!"
 690
 691         value = property(getValue, setValue)
 692         _value = property(getValue, setValue)
 693
 694         def getText(self):
 695                 return self.value
 696
 697         def getMulti(self, selected):
 698                 if self.visible_width:
 699                         if self.allmarked:
 700                                 mark = range(0, min(self.visible_width, len(self.text)))
 701                         else:
 702                                 mark = [self.marked_pos-self.offset]
 703                         return ("mtext"[1-selected:], self.text[self.offset:self.offset+self.visible_width].encode("utf-8")+" ", mark)
 704                 else:
 705                         if self.allmarked:
 706                                 mark = range(0, len(self.text))
 707                         else:
 708                                 mark = [self.marked_pos]
 709                         return ("mtext"[1-selected:], self.value+" ", mark)
 710
 711         def helpWindow(self):
 712                 from Screens.NumericalTextInputHelpDialog import NumericalTextInputHelpDialog
 713                 return (NumericalTextInputHelpDialog,self)
 714
 715         def getHTML(self, id):
 716                 return '<input type="text" name="' + id + '" value="' + self.value + '" /><br>\n'
 717
 718         def unsafeAssign(self, value):
 719                 self.value = str(value)
 720
 721 # a slider.
 722 class ConfigSlider(ConfigElement):
 723         def __init__(self, default = 0, increment = 1, limits = (0, 100)):
 724                 ConfigElement.__init__(self)
 725                 self.value = self.default = default
 726                 self.min = limits[0]
 727                 self.max = limits[1]
 728                 self.increment = increment
 729
 730         def checkValues(self):
 731                 if self.value < self.min:
 732                         self.value = self.min
 733
 734                 if self.value > self.max:
 735                         self.value = self.max
 736
 737         def handleKey(self, key):
 738                 if key == KEY_LEFT:
 739                         self.value -= self.increment
 740                 elif key == KEY_RIGHT:
 741                         self.value += self.increment
 742                 elif key == KEY_HOME:
 743                         self.value = self.min
 744                 elif key == KEY_END:
 745                         self.value = self.max
 746                 else:
 747                         return
 748
 749                 self.checkValues()
 750                 self.changed()
 751
 752         def getText(self):
 753                 return "%d / %d" % (self.value, self.max)
 754
 755         def getMulti(self, selected):
 756                 self.checkValues()
 757                 return ("slider", self.value, self.max)
 758
 759         def fromstring(self, value):
 760                 return int(value)
 761
 762 # a satlist. in fact, it's a ConfigSelection.
 763 class ConfigSatlist(ConfigSelection):
 764         def __init__(self, list, default = None):
 765                 if default is not None:
 766                         default = str(default)
 767                 ConfigSelection.__init__(self, choices = [(str(orbpos), desc) for (orbpos, desc, flags) in list], default = default)
 768
 769         def getOrbitalPosition(self):
 770                 if self.value == "":
 771                         return None
 772                 return int(self.value)
 773
 774         orbital_position = property(getOrbitalPosition)
 775
 776 # nothing.
 777 class ConfigNothing(ConfigSelection):
 778         def __init__(self):
 779                 ConfigSelection.__init__(self, choices = [""])
 780
 781 # until here, 'saved_value' always had to be a *string*.
 782 # now, in ConfigSubsection, and only there, saved_value
 783 # is a dict, essentially forming a tree.
 784 #
 785 # config.foo.bar=True
 786 # config.foobar=False
 787 #
 788 # turns into:
 789 # config.saved_value == {"foo": {"bar": "True"}, "foobar": "False"}
 790 #
 791
 792
 793 class ConfigSubsectionContent(object):
 794         pass
 795
 796 # we store a backup of the loaded configuration
 797 # data in self.stored_values, to be able to deploy
 798 # them when a new config element will be added,
 799 # so non-default values are instantly available
 800
 801 # A list, for example:
 802 # config.dipswitches = ConfigSubList()
 803 # config.dipswitches.append(ConfigYesNo())
 804 # config.dipswitches.append(ConfigYesNo())
 805 # config.dipswitches.append(ConfigYesNo())
 806 class ConfigSubList(list, object):
 807         def __init__(self):
 808                 object.__init__(self)
 809                 list.__init__(self)
 810                 self.stored_values = {}
 811
 812         def save(self):
 813                 for x in self:
 814                         x.save()
 815
 816         def load(self):
 817                 for x in self:
 818                         x.load()
 819
 820         def getSavedValue(self):
 821                 res = {}
 822                 for i in range(len(self)):
 823                         sv = self[i].saved_value
 824                         if sv is not None:
 825                                 res[str(i)] = sv
 826                 return res
 827
 828         def setSavedValue(self, values):
 829                 self.stored_values = dict(values)
 830                 for (key, val) in self.stored_values.items():
 831                         if int(key) < len(self):
 832                                 self[int(key)].saved_value = val
 833
 834         saved_value = property(getSavedValue, setSavedValue)
 835
 836         def append(self, item):
 837                 i = str(len(self))
 838                 list.append(self, item)
 839                 if i in self.stored_values:
 840                         item.saved_value = self.stored_values[i]
 841                         item.load()
 842
 843         def dict(self):
 844                 res = dict()
 845                 for index in range(len(self)):
 846                         res[str(index)] = self[index]
 847                 return res
 848
 849 # same as ConfigSubList, just as a dictionary.
 850 # care must be taken that the 'key' has a proper
 851 # str() method, because it will be used in the config
 852 # file.
 853 class ConfigSubDict(dict, object):
 854         def __init__(self):
 855                 object.__init__(self)
 856                 dict.__init__(self)
 857                 self.stored_values = {}
 858
 859         def save(self):
 860                 for x in self.values():
 861                         x.save()
 862
 863         def load(self):
 864                 for x in self.values():
 865                         x.load()
 866
 867         def getSavedValue(self):
 868                 res = {}
 869                 for (key, val) in self.items():
 870                         if val.saved_value is not None:
 871                                 res[str(key)] = val.saved_value
 872                 return res
 873
 874         def setSavedValue(self, values):
 875                 self.stored_values = dict(values)
 876                 for (key, val) in self.items():
 877                         if str(key) in self.stored_values:
 878                                 val = self.stored_values[str(key)]
 879
 880         saved_value = property(getSavedValue, setSavedValue)
 881
 882         def __setitem__(self, key, item):
 883                 dict.__setitem__(self, key, item)
 884                 if str(key) in self.stored_values:
 885                         item.saved_value = self.stored_values[str(key)]
 886                         item.load()
 887
 888         def dict(self):
 889                 return self
 890
 891 # Like the classes above, just with a more "native"
 892 # syntax.
 893 #
 894 # some evil stuff must be done to allow instant
 895 # loading of added elements. this is why this class
 896 # is so complex.
 897 #
 898 # we need the 'content' because we overwrite
 899 # __setattr__.
 900 # If you don't understand this, try adding
 901 # __setattr__ to a usual exisiting class and you will.
 902 class ConfigSubsection(object):
 903         def __init__(self):
 904                 object.__init__(self)
 905                 self.__dict__["content"] = ConfigSubsectionContent()
 906                 self.content.items = { }
 907                 self.content.stored_values = { }
 908
 909         def __setattr__(self, name, value):
 910                 if name == "saved_value":
 911                         return self.setSavedValue(value)
 912                 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"
 913                 self.content.items[name] = value
 914                 if name in self.content.stored_values:
 915                         #print "ok, now we have a new item,", name, "and have the following value for it:", self.content.stored_values[name]
 916                         value.saved_value = self.content.stored_values[name]
 917                         value.load()
 918
 919         def __getattr__(self, name):
 920                 return self.content.items[name]
 921
 922         def getSavedValue(self):
 923                 res = self.content.stored_values
 924                 for (key, val) in self.content.items.items():
 925                         if val.saved_value is not None:
 926                                 res[key] = val.saved_value
 927                         elif key in res:
 928                                 del res[key]
 929
 930                 return res
 931
 932         def setSavedValue(self, values):
 933                 values = dict(values)
 934
 935                 self.content.stored_values = values
 936
 937                 for (key, val) in self.content.items.items():
 938                         if key in values:
 939                                 val.setSavedValue(values[key])
 940
 941         saved_value = property(getSavedValue, setSavedValue)
 942
 943         def save(self):
 944                 for x in self.content.items.values():
 945                         x.save()
 946
 947         def load(self):
 948                 for x in self.content.items.values():
 949                         x.load()
 950
 951         def dict(self):
 952                 return self.content.items
 953
 954 # the root config object, which also can "pickle" (=serialize)
 955 # down the whole config tree.
 956 #
 957 # we try to keep non-existing config entries, to apply them whenever
 958 # a new config entry is added to a subsection
 959 # also, non-existing config entries will be saved, so they won't be
 960 # lost when a config entry disappears.
 961 class Config(ConfigSubsection):
 962         def __init__(self):
 963                 ConfigSubsection.__init__(self)
 964
 965         def pickle_this(self, prefix, topickle, result):
 966                 for (key, val) in topickle.items():
 967                         name = prefix + "." + key
 968
 969                         if isinstance(val, dict):
 970                                 self.pickle_this(name, val, result)
 971                         elif isinstance(val, tuple):
 972                                 result.append(name + "=" + val[0]) # + " ; " + val[1])
 973                         else:
 974                                 result.append(name + "=" + val)
 975
 976         def pickle(self):
 977                 result = [ ]
 978                 self.pickle_this("config", self.saved_value, result)
 979                 return '\n'.join(result) + "\n"
 980
 981         def unpickle(self, lines):
 982                 tree = { }
 983                 for l in lines:
 984                         if not len(l) or l[0] == '#':
 985                                 continue
 986
 987                         n = l.find('=')
 988                         val = l[n+1:].strip()
 989
 990                         names = l[:n].split('.')
 991 #                       if val.find(' ') != -1:
 992 #                               val = val[:val.find(' ')]
 993
 994                         base = tree
 995
 996                         for n in names[:-1]:
 997                                 base = base.setdefault(n, {})
 998
 999                         base[names[-1]] = val
1000
1001                 # we inherit from ConfigSubsection, so ...
1002                 #object.__setattr__(self, "saved_value", tree["config"])
1003                 if "config" in tree:
1004                         self.setSavedValue(tree["config"])
1005
1006         def saveToFile(self, filename):
1007                 f = open(filename, "w")
1008                 f.write(self.pickle())
1009                 f.close()
1010
1011         def loadFromFile(self, filename):
1012                 f = open(filename, "r")
1013                 self.unpickle(f.readlines())
1014                 f.close()
1015
1016 config = Config()
1017 config.misc = ConfigSubsection()
1018
1019 class ConfigFile:
1020         CONFIG_FILE = resolveFilename(SCOPE_CONFIG, "settings")
1021
1022         def load(self):
1023                 try:
1024                         config.loadFromFile(self.CONFIG_FILE)
1025                 except IOError, e:
1026                         print "unable to load config (%s), assuming defaults..." % str(e)
1027
1028         def save(self):
1029 #               config.save()
1030                 config.saveToFile(self.CONFIG_FILE)
1031
1032         def __resolveValue(self, pickles, cmap):
1033                 if cmap.has_key(pickles[0]):
1034                         if len(pickles) > 1:
1035                                 return self.__resolveValue(pickles[1:], cmap[pickles[0]].dict())
1036                         else:
1037                                 return str(cmap[pickles[0]].value)
1038                 return None
1039
1040         def getResolvedKey(self, key):
1041                 names = key.split('.')
1042                 if len(names) > 1:
1043                         if names[0] == "config":
1044                                 ret=self.__resolveValue(names[1:], config.content.items)
1045                                 if ret and len(ret):
1046                                         return ret
1047                 print "getResolvedKey", key, "failed !! (Typo??)"
1048                 return ""
1049
1050 def NoSave(element):
1051         element.disableSave()
1052         return element
1053
1054 configfile = ConfigFile()
1055
1056 configfile.load()
1057
1058 def getConfigListEntry(*args):
1059         assert len(args) > 1, "getConfigListEntry needs a minimum of two arguments (descr, configElement)"
1060         return args
1061
1062 #def _(x):
1063 #       return x
1064 #
1065 #config.bla = ConfigSubsection()
1066 #config.bla.test = ConfigYesNo()
1067 #config.nim = ConfigSubList()
1068 #config.nim.append(ConfigSubsection())
1069 #config.nim[0].bla = ConfigYesNo()
1070 #config.nim.append(ConfigSubsection())
1071 #config.nim[1].bla = ConfigYesNo()
1072 #config.nim[1].blub = ConfigYesNo()
1073 #config.arg = ConfigSubDict()
1074 #config.arg["Hello"] = ConfigYesNo()
1075 #
1076 #config.arg["Hello"].handleKey(KEY_RIGHT)
1077 #config.arg["Hello"].handleKey(KEY_RIGHT)
1078 #
1079 ##config.saved_value
1080 #
1081 ##configfile.save()
1082 #config.save()
1083 #print config.pickle()