lib/python/Components/ConfigList.py

   1 from HTMLComponent import *
   2 from GUIComponent import *
   3 from config import KEY_LEFT, KEY_RIGHT, KEY_0, KEY_DELETE, KEY_OK, KEY_TIMEOUT, ConfigElement
   4 from Components.ActionMap import NumberActionMap
   5 from enigma import eListbox, eListboxPythonConfigContent, eTimer
   6
   7 class ConfigList(HTMLComponent, GUIComponent, object):
   8         def __init__(self, list, session = None):
   9                 GUIComponent.__init__(self)
  10                 self.l = eListboxPythonConfigContent()
  11                 self.l.setSeperation(100)
  12                 self.timer = eTimer()
  13                 self.list = list
  14                 self.onSelectionChanged = [ ]
  15                 self.current = None
  16                 self.help_window = None
  17                 self.setHelpWindowSession(session)
  18
  19         def execBegin(self):
  20                 self.timer.timeout.get().append(self.timeout)
  21
  22         def execEnd(self):
  23                 self.timer.timeout.get().remove(self.timeout)
  24
  25         def setHelpWindowSession(self, session):
  26                 assert self.help_window is None, "you can't move a help window to another session"
  27                 self.session = session
  28
  29         def toggle(self):
  30                 selection = self.getCurrent()
  31                 selection[1].toggle()
  32                 self.invalidateCurrent()
  33
  34         def handleKey(self, key):
  35                 selection = self.getCurrent()
  36                 if selection and selection[1].enabled:
  37                         selection[1].handleKey(key)
  38                         self.invalidateCurrent()
  39                         if self.help_window:
  40                                 self.help_window.update(selection[1])
  41                         if key not in [KEY_TIMEOUT, KEY_LEFT, KEY_RIGHT, KEY_DELETE, KEY_OK]:
  42                                 self.timer.start(1000, 1)
  43
  44         def getCurrent(self):
  45                 return self.l.getCurrentSelection()
  46
  47         def invalidateCurrent(self):
  48                 self.l.invalidateEntry(self.l.getCurrentSelectionIndex())
  49
  50         def invalidate(self, entry):
  51                 # when the entry to invalidate does not exist, just ignore the request.
  52                 # this eases up conditional setup screens a lot.
  53                 if entry in self.__list:
  54                         self.l.invalidateEntry(self.__list.index(entry))
  55
  56         GUI_WIDGET = eListbox
  57
  58         def selectionChanged(self):
  59                 n = self.getCurrent()
  60
  61                 if self.help_window:
  62                         self.session.deleteDialog(self.help_window)
  63
  64                 nh = n and n[1].helpWindow()
  65                 if nh is not None and self.session is not None:
  66                         self.help_window = self.session.instantiateDialog(*nh)
  67                         self.help_window.show()
  68
  69                 self.current = n
  70                 for x in self.onSelectionChanged:
  71                         x()
  72
  73         def postWidgetCreate(self, instance):
  74                 instance.setContent(self.l)
  75                 instance.selectionChanged.get().append(self.selectionChanged)
  76
  77         def preWidgetRemove(self, instance):
  78                 instance.selectionChanged.get().remove(self.selectionChanged)
  79
  80         def setList(self, l):
  81                 self.timer.stop()
  82                 self.__list = l
  83                 self.l.setList(self.__list)
  84
  85                 if l is not None:
  86                         for x in l:
  87                                 assert isinstance(x[1], ConfigElement), "entry in ConfigList " + str(x[1]) + " must be a ConfigElement"
  88
  89         def getList(self):
  90                 return self.__list
  91
  92         list = property(getList, setList)
  93
  94         def timeout(self):
  95                 self.handleKey(KEY_TIMEOUT)
  96
  97 class ConfigListScreen:
  98         def __init__(self, list, session = None, on_change = None):
  99                 self["config_actions"] = NumberActionMap(["SetupActions", "TextInputActions"],
 100                 {
 101                         "ok": self.keyOK,
 102                         "left": self.keyLeft,
 103                         "right": self.keyRight,
 104                         "delete": self.keyDelete,
 105                         "1": self.keyNumberGlobal,
 106                         "2": self.keyNumberGlobal,
 107                         "3": self.keyNumberGlobal,
 108                         "4": self.keyNumberGlobal,
 109                         "5": self.keyNumberGlobal,
 110                         "6": self.keyNumberGlobal,
 111                         "7": self.keyNumberGlobal,
 112                         "8": self.keyNumberGlobal,
 113                         "9": self.keyNumberGlobal,
 114                         "0": self.keyNumberGlobal
 115                 }, -1) # to prevent left/right overriding the listbox
 116
 117                 self["config"] = ConfigList(list, session = session)
 118                 if on_change is not None:
 119                         self.__changed = on_change
 120                 else:
 121                         self.__changed = lambda: None
 122
 123         def keyOK(self):
 124                 self["config"].handleKey(KEY_OK)
 125
 126         def keyLeft(self):
 127                 self["config"].handleKey(KEY_LEFT)
 128                 self.__changed()
 129
 130         def keyRight(self):
 131                 self["config"].handleKey(KEY_RIGHT)
 132                 self.__changed()
 133
 134         def keyDelete(self):
 135                 self["config"].handleKey(KEY_DELETE)
 136                 self.__changed()
 137
 138         def keyNumberGlobal(self, number):
 139                 self["config"].handleKey(KEY_0 + number)
 140                 self.__changed()
 141