lib/python/Components/config.py

   1 class configFile:
   2         def __init__(self):
   3                 self.configElements = { }
   4                 try:
   5                         self.file = open("config")
   6                 except IOError:
   7                         print "cannot open config file"
   8                         return
   9
  10                 while 1:
  11                         line = self.file.readline()
  12                         if line == "":
  13                                 break
  14                         self.addElement(line)
  15                 self.file.close()
  16
  17         def addElement(self, line):
  18                 x = line.find("=")
  19                 if x > -1:
  20                         self.configElements[line[:x]] = line[x + 1:]
  21
  22         def getKey(self, key):
  23                 return self.configElements[key]
  24
  25         def setKey(self, key, value):
  26                 self.configElements[key] = value
  27
  28         def save(self):
  29                 fileHandle = open("config", "w")
  30
  31                 for x in self.configElements:
  32                         fileHandle.write(x + "=" + self.configElements[x])
  33
  34                 fileHandle.close()
  35
  36 class configBoolean:
  37         def __init__(self, parent):
  38                 self.parent = parent
  39
  40         def checkValues(self):
  41                 if self.parent.value < 0:
  42                         self.parent.value = 0
  43
  44                 if(self.parent.value >= (len(self.parent.vals) - 1)):
  45                         self.parent.value = len(self.parent.vals) - 1
  46
  47         def cancel(self):
  48                 self.parent.reload()
  49
  50         def save(self):
  51                 self.parent.save()
  52
  53         def handleKey(self, key):
  54                 if key == 1:
  55                         self.parent.value = self.parent.value - 1
  56                 if key == 2:
  57                         self.parent.value = self.parent.value + 1
  58
  59                 self.checkValues()
  60
  61                 self.parent.change()
  62
  63         def __call__(self):                     #needed by configlist
  64                 self.checkValues()
  65                 return ("text", self.parent.vals[self.parent.value])
  66
  67 class configValue:
  68         def __init__(self, obj):
  69                 self.obj = obj
  70
  71         def __str__(self):
  72                 return self.obj
  73
  74 class Config:
  75         def __init__(self):
  76                 pass
  77
  78 config = Config();
  79 configfile = configFile()
  80
  81 class ConfigSlider:
  82         def __init__(self, parent):
  83                 self.parent = parent
  84
  85         def cancel(self):
  86                 self.parent.reload()
  87
  88         def save(self):
  89                 self.parent.save()
  90
  91         def checkValues(self):
  92                 if self.parent.value < 0:
  93                         self.parent.value = 0
  94
  95                 if self.parent.value > 10:
  96                         self.parent.value = 10
  97
  98         def handleKey(self, key):
  99                 if key == 1:
 100                         self.parent.value = self.parent.value - 1
 101                 if key == 2:
 102                         self.parent.value = self.parent.value + 1
 103
 104                 self.checkValues()
 105                 self.parent.change()
 106
 107         def __call__(self):                     #needed by configlist
 108                 self.checkValues()
 109                 return ("slider", self.parent.value * 10)
 110
 111 class ConfigSubsection:
 112         def __init__(self):
 113                 pass
 114
 115 class configElement:
 116         def datafromFile(self, control, data):
 117                 if control == ConfigSlider:
 118                         return int(data);
 119                 elif control == configBoolean:
 120                         return int(data);
 121                 else:
 122                         return ""
 123
 124         def datatoFile(self, control, data):
 125                 if control == ConfigSlider:
 126                         return str(data);
 127                 elif control == configBoolean:
 128                         return str(data);
 129                 else:
 130                         return ""
 131
 132         def loadData(self):
 133                 try:
 134                         value = self.datafromFile(self.controlType, configfile.getKey(self.configPath))
 135                 except:
 136                         value = ""
 137
 138                 if value == "":
 139                         print "value not found - using default"
 140                         self.value = self.defaultValue
 141                         self.save()             #add missing value to dict
 142                 else:
 143                         self.value = value
 144                         print "value ok"
 145
 146         def __init__(self, configPath, control, defaultValue, vals):
 147                 self.configPath = configPath
 148                 self.defaultValue = defaultValue
 149                 self.controlType = control
 150                 self.vals = vals
 151                 self.notifierList = [ ]
 152                 self.loadData()
 153         def addNotifier(self, notifier):
 154                 self.notifierList.append(notifier);
 155                 notifier(self);
 156         def change(self):
 157                 for notifier in self.notifierList:
 158                         notifier(self)
 159         def reload(self):
 160                 self.loadData()
 161         def save(self):
 162                 configfile.setKey(self.configPath, self.datatoFile(self.controlType,self.value))