lib/python/Components/config.py

   1 class configFile:
   2         def __init__(self):
   3                 self.changed = 0
   4                 self.configElements = { }
   5                 try:
   6                         self.file = open("config")
   7                 except IOError:
   8                         print "cannot open config file"
   9                         return
  10
  11                 while 1:
  12                         line = self.file.readline()
  13                         if line == "":
  14                                 break
  15
  16                         if line.startswith("#"):                #skip comments
  17                                 continue
  18
  19                         self.addElement(line)
  20                 self.file.close()
  21
  22         def addElement(self, line):
  23                 x = line.find("=")
  24                 if x > -1:
  25                         self.configElements[line[:x]] = line[x + 1:]
  26
  27         def getKey(self, key):
  28                 return self.configElements[key]
  29
  30         def setKey(self, key, value):
  31                 self.changed = 1
  32                 self.configElements[key] = value
  33
  34         def save(self):
  35                 if self.changed == 0:           #no changes, so no write to disk needed
  36                         return
  37
  38                 fileHandle = open("config", "w")
  39
  40                 keys = self.configElements.keys()
  41                 keys.sort()
  42                 for x in keys:
  43                         wstr = x + "=" + self.configElements[x]
  44
  45                         if wstr[len(wstr) - 1] != '\n':
  46                                 wstr = wstr + "\n"
  47
  48                         fileHandle.write(wstr)
  49
  50                 fileHandle.close()
  51
  52 class configSelection:
  53         def __init__(self, parent):
  54                 self.parent = parent
  55
  56         def checkValues(self):
  57                 if self.parent.value < 0:
  58                         self.parent.value = 0
  59
  60                 if(self.parent.value >= (len(self.parent.vals) - 1)):
  61                         self.parent.value = len(self.parent.vals) - 1
  62
  63         def cancel(self):
  64                 self.parent.reload()
  65
  66         def save(self):
  67                 self.parent.save()
  68
  69         def handleKey(self, key):
  70                 if key == config.key["prevElement"]:
  71                         self.parent.value = self.parent.value - 1
  72                 if key == config.key["nextElement"]:
  73                         self.parent.value = self.parent.value + 1
  74
  75                 self.checkValues()
  76
  77                 self.parent.change()
  78
  79         def __call__(self, selected):                   #needed by configlist
  80                 self.checkValues()
  81                 return ("text", self.parent.vals[self.parent.value])
  82
  83 class configSatlist:
  84         def __init__(self, parent):
  85                 self.parent = parent
  86
  87         def checkValues(self):
  88                 if self.parent.value < 0:
  89                         self.parent.value = 0
  90
  91                 if(self.parent.value >= (len(self.parent.vals) - 1)):
  92                         self.parent.value = len(self.parent.vals) - 1
  93
  94         def cancel(self):
  95                 self.parent.reload()
  96
  97         def save(self):
  98                 self.parent.save()
  99
 100         def handleKey(self, key):
 101                 if key == config.key["prevElement"]:
 102                         self.parent.value = self.parent.value - 1
 103                 if key == config.key["nextElement"]:
 104                         self.parent.value = self.parent.value + 1
 105
 106                 self.checkValues()
 107
 108                 self.parent.change()
 109
 110         def __call__(self, selected):                   #needed by configlist
 111                 self.checkValues()
 112                 #fixme
 113                 return ("text", str(self.parent.vals[self.parent.value][0]))
 114
 115 class configSequence:
 116         def __init__(self, parent):
 117                 self.parent = parent
 118                 self.markedPos = 0
 119
 120         def checkValues(self):
 121                 maxPos = len(self.parent.value) * self.parent.vals[1]
 122                 print maxPos
 123
 124                 if self.markedPos >= maxPos:
 125                         self.markedPos = maxPos - 1
 126                 if self.markedPos < 0:
 127                         self.markedPos = 0
 128
 129         def cancel(self):
 130                 self.parent.reload()
 131
 132         def save(self):
 133                 self.parent.save()
 134
 135         def handleKey(self, key):
 136                 #this will no change anything on the value itself
 137                 #so we can handle it here in gui element
 138                 if key == config.key["prevElement"]:
 139                         self.markedPos -= 1
 140                 if key == config.key["nextElement"]:
 141                         self.markedPos += 1
 142
 143                 if key >= config.key["0"] and key <= config.key["9"]:
 144                         number = 9 - config.key["9"] + key
 145                         # length of numberblock
 146                         numberLen = len(str(self.parent.vals[1][1]))
 147                         # position in the block
 148                         posinblock = self.markedPos % numberLen
 149                         # blocknumber
 150                         blocknumber = self.markedPos / numberLen
 151
 152                         oldvalue = self.parent.value[blocknumber]
 153                         olddec = oldvalue % 10 ** (numberLen - posinblock) - (oldvalue % 10 ** (numberLen - posinblock - 1))
 154                         newvalue = oldvalue - olddec + (10 ** (numberLen - posinblock - 1) * number)
 155
 156                         print "You actually pressed a number (" + str(number) + ") which will be added at block number " + str(blocknumber) + " on position " + str(posinblock)
 157                         print "Old value: " + str(oldvalue) + " olddec: " + str(olddec) + " newvalue: " + str(newvalue)
 158                         self.parent.value[blocknumber] = newvalue
 159                         self.markedPos += 1
 160
 161                 self.checkValues()
 162
 163                 print "markPos:",
 164                 print self.markedPos
 165
 166                 #FIXME: dont call when press left/right
 167                 self.parent.change()
 168
 169         def __call__(self, selected):                   #needed by configlist
 170                 value = ""
 171                 mPos = self.markedPos
 172                 print "Positon: " + str(mPos)
 173                 for i in self.parent.value:
 174                         if len(value):  #fixme no heading separator possible
 175                                 value += self.parent.vals[0]
 176                                 if mPos >= len(value) - 1:
 177                                         mPos += 1
 178
 179                         #diff =         self.parent.vals[1] - len(str(i))
 180                         #if diff > 0:
 181                                 ## if this helps?!
 182                                 #value += " " * diff
 183                         print (("%0" + str(len(str(self.parent.vals[1][1]))) + "d") % i)
 184                         value += ("%0" + str(len(str(self.parent.vals[1][1]))) + "d") % i
 185
 186                         # only mark cursor when we are selected
 187                         # (this code is heavily ink optimized!)
 188                 return ("mtext"[1-selected:], value, [mPos])
 189
 190 class configValue:
 191         def __init__(self, obj):
 192                 self.obj = obj
 193
 194         def __str__(self):
 195                 return self.obj
 196
 197 class Config:
 198         def __init__(self):
 199                 self.key = { "choseElement": 0,
 200                                          "prevElement": 1,
 201                                          "nextElement": 2,
 202                                          "0": 10,
 203                                          "1": 11,
 204                                          "2": 12,
 205                                          "3": 13,
 206                                          "4": 14,
 207                                          "5": 15,
 208                                          "6": 16,
 209                                          "7": 17,
 210                                          "8": 18,
 211                                          "9": 19 }
 212
 213 config = Config();
 214 configfile = configFile()
 215
 216 class ConfigSlider:
 217         def __init__(self, parent):
 218                 self.parent = parent
 219
 220         def cancel(self):
 221                 self.parent.reload()
 222
 223         def save(self):
 224                 self.parent.save()
 225
 226         def checkValues(self):
 227                 if self.parent.value < 0:
 228                         self.parent.value = 0
 229
 230                 if self.parent.value > 10:
 231                         self.parent.value = 10
 232
 233         def handleKey(self, key):
 234                 if key == config.key["prevElement"]:
 235                         self.parent.value = self.parent.value - 1
 236                 if key == config.key["nextElement"]:
 237                         self.parent.value = self.parent.value + 1
 238
 239                 self.checkValues()
 240                 self.parent.change()
 241
 242         def __call__(self, selected):                   #needed by configlist
 243                 self.checkValues()
 244                 return ("slider", self.parent.value * 10)
 245
 246 class ConfigSubsection:
 247         def __init__(self):
 248                 pass
 249
 250 class configElement:
 251
 252         def getIndexbyEntry(self, data):
 253                 cnt = 0;
 254                 tcnt = -1; #for defaultval
 255                 for x in self.vals:
 256                         if int(x[1]) == int(data):
 257                                         return cnt
 258                         if int(x[1]) == int(self.defaultValue):
 259                                         tcnt = cnt
 260                         cnt += 1
 261                 if tcnt != -1:
 262                         return tcnt
 263                 return 0        #prevent bigger then array
 264
 265         def datafromFile(self, control, data):
 266                 if control == ConfigSlider:
 267                         return int(data);
 268                 elif control == configSelection:
 269                         return int(data);
 270                 elif control == configSequence:
 271                         list = [ ]
 272                         part = data.split(self.vals[0])
 273                         for x in part:
 274                                 list.append(int(x))
 275                         return list
 276                 elif control == configSatlist:
 277                         return self.getIndexbyEntry(data)
 278                 else:
 279                         return ""
 280
 281         def datatoFile(self, control, data):
 282                 if control == ConfigSlider:
 283                         return str(data);
 284                 elif control == configSelection:
 285                         return str(data);
 286                 elif control == configSequence:
 287                         value = ((len(data) * ("%d" + self.vals[0]))[0:-1]) % tuple(data)
 288 #                       just in case you don't understand the above, here an equivalent:
 289 #                       value = ""
 290 #                       for i in data:
 291 #                               if value !="":
 292 #                                       value += self.vals[0]
 293 #                               value += str(i)
 294                         return value
 295                 elif control == configSatlist:
 296                         return str(self.vals[self.value][1]);
 297                 else:
 298                         return ""
 299
 300         def loadData(self):
 301                 try:
 302                         value = self.datafromFile(self.controlType, configfile.getKey(self.configPath))
 303                 except:
 304                         value = ""
 305
 306                 if value == "":
 307                         print "value not found - using default"
 308
 309                         if self.controlType == configSatlist:
 310                                 self.value = self.getIndexbyEntry(self.defaultValue)
 311                         else:
 312                                 self.value = self.defaultValue
 313
 314                         self.save()             #add missing value to dict
 315                 else:
 316                         self.value = value
 317
 318                 #is this right? activate settings after load/cancel and use default
 319                 self.change()
 320
 321         def __init__(self, configPath, control, defaultValue, vals):
 322                 self.configPath = configPath
 323                 self.defaultValue = defaultValue
 324                 self.controlType = control
 325                 self.vals = vals
 326                 self.notifierList = [ ]
 327                 self.enabled = True
 328                 self.loadData()
 329         def addNotifier(self, notifier):
 330                 self.notifierList.append(notifier);
 331                 notifier(self);
 332         def change(self):
 333                 for notifier in self.notifierList:
 334                         notifier(self)
 335         def reload(self):
 336                 self.loadData()
 337         def save(self):
 338                 configfile.setKey(self.configPath, self.datatoFile(self.controlType,self.value))
 339
 340 class configElement_nonSave(configElement):
 341         def __init__(self, configPath, control, defaultValue, vals):
 342                 configElement.__init__(self, configPath, control, defaultValue, vals)
 343
 344         def save(self):
 345                 pass
 346
 347 def getConfigListEntry(description, element):
 348         b = element
 349         item = b.controlType(b)
 350         return ((description, item))