lib/python/Components/HelpMenuList.py

   1 from GUIComponent import GUIComponent
   2
   3 from enigma import eListboxPythonMultiContent, eListbox, gFont
   4
   5 from Tools.KeyBindings import queryKeyBinding, getKeyDescription
   6 #getKeyPositions
   7
   8 # [ ( actionmap, context, [(action, help), (action, help), ...] ), (actionmap, ... ), ... ]
   9
  10 class HelpMenuList(GUIComponent):
  11         def __init__(self, list, callback):
  12                 GUIComponent.__init__(self)
  13                 self.onSelChanged = [ ]
  14                 self.l = eListboxPythonMultiContent()
  15                 self.callback = callback
  16
  17                 l = [ ]
  18                 for (actionmap, context, actions) in list:
  19                         for (action, help) in actions:
  20                                 entry = [ ]
  21
  22                                 buttons = queryKeyBinding(context, action)
  23
  24                                 # do not display entries which are not accessible from keys
  25                                 if not len(buttons):
  26                                         continue
  27
  28                                 name = None
  29                                 flags = 0
  30
  31                                 for n in buttons:
  32                                         (name, flags) = (getKeyDescription(n[0]), n[1])
  33                                         if name is not None:
  34                                                 break
  35
  36                                 if flags & 8: # for long keypresses, prepend l_ into the key name.
  37                                         name = ("l_" + name[0], name[1], name[2])
  38
  39                                 entry.append( (actionmap, context, action, name ) )
  40                                 entry.append( (eListboxPythonMultiContent.TYPE_TEXT, 0, 0, 400, 28, 0, 0, help) )
  41
  42                                 l.append(entry)
  43
  44                 self.l.setList(l)
  45
  46                 self.l.setFont(0, gFont("Regular", 24))
  47                 self.l.setItemHeight(38)
  48
  49         def ok(self):
  50                 # a list entry has a "private" tuple as first entry...
  51                 l = self.getCurrent()
  52                 if l is None:
  53                         return
  54                 # ...containing (Actionmap, Context, Action, keydata).
  55                 # we returns this tuple to the callback.
  56                 self.callback(l[0], l[1], l[2])
  57
  58         def getCurrent(self):
  59                 sel = self.l.getCurrentSelection()
  60                 return sel and sel[0]
  61
  62         GUI_WIDGET = eListbox
  63
  64         def postWidgetCreate(self, instance):
  65                 instance.setContent(self.l)
  66
  67                 instance.selectionChanged.get().append(self.selectionChanged)
  68
  69         def selectionChanged(self):
  70                 for x in self.onSelChanged:
  71                         x()