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) * len(self.parent.vals[1]) + len(self.parent.value)
 122
 123                 if self.markedPos >= maxPos:
 124                         self.markedPos = maxPos - 1
 125                 if self.markedPos < 0:
 126                         self.markedPos = 0
 127
 128         def cancel(self):
 129                 self.parent.reload()
 130
 131         def save(self):
 132                 self.parent.save()
 133
 134         def handleKey(self, key):
 135                 #this will no change anything on the value itself
 136                 #so we can handle it here in gui element
 137                 if key == config.key["prevElement"]:
 138                         self.markedPos -= 1
 139                 if key == config.key["nextElement"]:
 140                         self.markedPos += 1
 141
 142                 if key >= config.key["0"] and key <= config.key["9"]:
 143                         number = 9 - config.key["9"] + key
 144                         # length of numberblock
 145                         numberLen = len(str(self.parent.vals[1][1]))
 146                         # position in the block
 147                         posinblock = self.markedPos % numberLen
 148                         # blocknumber
 149                         blocknumber = self.markedPos / numberLen
 150
 151                         oldvalue = self.parent.value[blocknumber]
 152                         olddec = oldvalue % 10 ** (numberLen - posinblock) - (oldvalue % 10 ** (numberLen - posinblock - 1))
 153                         newvalue = oldvalue - olddec + (10 ** (numberLen - posinblock - 1) * number)
 154
 155                         print "You actually pressed a number (" + str(number) + ") which will be added at block number " + str(blocknumber) + " on position " + str(posinblock)
 156                         print "Old value: " + str(oldvalue) + " olddec: " + str(olddec) + " newvalue: " + str(newvalue)
 157                         self.parent.value[blocknumber] = newvalue
 158                         self.markedPos += 1
 159
 160                 self.checkValues()
 161
 162                 print "markPos:",
 163                 print self.markedPos
 164
 165                 #FIXME: dont call when press left/right
 166                 self.parent.change()
 167
 168         def __call__(self, selected):                   #needed by configlist
 169                 value = ""
 170                 mPos = self.markedPos
 171                 print "Positon: " + str(mPos)
 172                 for i in self.parent.value:
 173                         if len(value):  #fixme no heading separator possible
 174                                 value += self.parent.vals[0]
 175                                 if mPos >= len(value) - 1:
 176                                         mPos += 1
 177
 178                         #diff =         self.parent.vals[1] - len(str(i))
 179                         #if diff > 0:
 180                                 ## if this helps?!
 181                                 #value += " " * diff
 182                         print (("%0" + str(len(str(self.parent.vals[1][1]))) + "d") % i)
 183                         value += ("%0" + str(len(str(self.parent.vals[1][1]))) + "d") % i
 184
 185                         # only mark cursor when we are selected
 186                         # (this code is heavily ink optimized!)
 187                 return ("mtext"[1-selected:], value, [mPos])
 188
 189 class configValue:
 190         def __init__(self, obj):
 191                 self.obj = obj
 192
 193         def __str__(self):
 194                 return self.obj
 195
 196 class Config:
 197         def __init__(self):
 198                 self.key = { "choseElement": 0,
 199                                          "prevElement": 1,
 200                                          "nextElement": 2,
 201                                          "0": 10,
 202                                          "1": 11,
 203                                          "2": 12,
 204                                          "3": 13,
 205                                          "4": 14,
 206                                          "5": 15,
 207                                          "6": 16,
 208                                          "7": 17,
 209                                          "8": 18,
 210                                          "9": 19 }
 211
 212 config = Config();
 213 configfile = configFile()
 214
 215 class ConfigSlider:
 216         def __init__(self, parent):
 217                 self.parent = parent
 218
 219         def cancel(self):
 220                 self.parent.reload()
 221
 222         def save(self):
 223                 self.parent.save()
 224
 225         def checkValues(self):
 226                 if self.parent.value < 0:
 227                         self.parent.value = 0
 228
 229                 if self.parent.value > 10:
 230                         self.parent.value = 10
 231
 232         def handleKey(self, key):
 233                 if key == config.key["prevElement"]:
 234                         self.parent.value = self.parent.value - 1
 235                 if key == config.key["nextElement"]:
 236                         self.parent.value = self.parent.value + 1
 237
 238                 self.checkValues()
 239                 self.parent.change()
 240
 241         def __call__(self, selected):                   #needed by configlist
 242                 self.checkValues()
 243                 return ("slider", self.parent.value * 10)
 244
 245 class ConfigSubsection:
 246         def __init__(self):
 247                 pass
 248
 249 class configElement:
 250
 251         def getIndexbyEntry(self, data):
 252                 cnt = 0;
 253                 tcnt = -1; #for defaultval
 254                 for x in self.vals:
 255                         if int(x[1]) == int(data):
 256                                         return cnt
 257                         if int(x[1]) == int(self.defaultValue):
 258                                         tcnt = cnt
 259                         cnt += 1
 260                 if tcnt != -1:
 261                         return tcnt
 262                 return 0        #prevent bigger then array
 263
 264         def datafromFile(self, control, data):
 265                 if control == ConfigSlider:
 266                         return int(data);
 267                 elif control == configSelection:
 268                         return int(data);
 269                 elif control == configSequence:
 270                         list = [ ]
 271                         part = data.split(self.vals[0])
 272                         for x in part:
 273                                 list.append(int(x))
 274                         return list
 275                 elif control == configSatlist:
 276                         return self.getIndexbyEntry(data)
 277                 else:
 278                         return ""
 279
 280         def datatoFile(self, control, data):
 281                 if control == ConfigSlider:
 282                         return str(data);
 283                 elif control == configSelection:
 284                         return str(data);
 285                 elif control == configSequence:
 286                         value = ((len(data) * ("%d" + self.vals[0]))[0:-1]) % tuple(data)
 287 #                       just in case you don't understand the above, here an equivalent:
 288 #                       value = ""
 289 #                       for i in data:
 290 #                               if value !="":
 291 #                                       value += self.vals[0]
 292 #                               value += str(i)
 293                         return value
 294                 elif control == configSatlist:
 295                         return str(self.vals[self.value][1]);
 296                 else:
 297                         return ""
 298
 299         def loadData(self):
 300                 try:
 301                         value = self.datafromFile(self.controlType, configfile.getKey(self.configPath))
 302                 except:
 303                         value = ""
 304
 305                 if value == "":
 306                         print "value not found - using default"
 307
 308                         if self.controlType == configSatlist:
 309                                 self.value = self.getIndexbyEntry(self.defaultValue)
 310                         else:
 311                                 self.value = self.defaultValue
 312
 313                         self.save()             #add missing value to dict
 314                 else:
 315                         self.value = value
 316
 317                 #is this right? activate settings after load/cancel and use default
 318                 self.change()
 319
 320         def __init__(self, configPath, control, defaultValue, vals):
 321                 self.configPath = configPath
 322                 self.defaultValue = defaultValue
 323                 self.controlType = control
 324                 self.vals = vals
 325                 self.notifierList = [ ]
 326                 self.enabled = True
 327                 self.loadData()
 328         def addNotifier(self, notifier):
 329                 self.notifierList.append(notifier);
 330                 notifier(self);
 331         def change(self):
 332                 for notifier in self.notifierList:
 333                         notifier(self)
 334         def reload(self):
 335                 self.loadData()
 336         def save(self):
 337                 configfile.setKey(self.configPath, self.datatoFile(self.controlType,self.value))
 338
 339 class configElement_nonSave(configElement):
 340         def __init__(self, configPath, control, defaultValue, vals):
 341                 configElement.__init__(self, configPath, control, defaultValue, vals)
 342
 343         def save(self):
 344                 pass
 345
 346 def getConfigListEntry(description, element):
 347         b = element
 348         item = b.controlType(b)
 349         return ((description, item))