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