lib/python/Components/HelpMenuList.py

   1 from GUIComponent import GUIComponent
   2
   3 from enigma import eListboxPythonMultiContent, eListbox, gFont
   4 from Tools.KeyBindings import queryKeyBinding, getKeyDescription
   5 #getKeyPositions
   6
   7 # [ ( actionmap, context, [(action, help), (action, help), ...] ), (actionmap, ... ), ... ]
   8
   9 class HelpMenuList(GUIComponent):
  10         def __init__(self, helplist, callback):
  11                 GUIComponent.__init__(self)
  12                 self.onSelChanged = [ ]
  13                 self.l = eListboxPythonMultiContent()
  14                 self.callback = callback
  15                 self.extendedHelp = False
  16
  17                 l = [ ]
  18                 for (actionmap, context, actions) in helplist:
  19                         for (action, help) in actions:
  20                                 buttons = queryKeyBinding(context, action)
  21
  22                                 # do not display entries which are not accessible from keys
  23                                 if not len(buttons):
  24                                         continue
  25
  26                                 name = None
  27                                 flags = 0
  28
  29                                 for n in buttons:
  30                                         (name, flags) = (getKeyDescription(n[0]), n[1])
  31                                         if name is not None:
  32                                                 break
  33
  34                                 if flags & 8: # for long keypresses, prepend l_ into the key name.
  35                                         name = (name[0], "long")
  36
  37                                 entry = [ (actionmap, context, action, name ) ]
  38
  39                                 if isinstance(help, list):
  40                                         self.extendedHelp = True
  41                                         print "extendedHelpEntry found"
  42                                         entry.extend((
  43                                                 (eListboxPythonMultiContent.TYPE_TEXT, 0, 0, 400, 26, 0, 0, help[0]),
  44                                                 (eListboxPythonMultiContent.TYPE_TEXT, 0, 28, 400, 20, 1, 0, help[1])
  45                                         ))
  46                                 else:
  47                                         entry.append( (eListboxPythonMultiContent.TYPE_TEXT, 0, 0, 400, 28, 0, 0, help) )
  48
  49                                 l.append(entry)
  50
  51                 self.l.setList(l)
  52                 if self.extendedHelp is True:
  53                         self.l.setFont(0, gFont("Regular", 24))
  54                         self.l.setFont(1, gFont("Regular", 18))
  55                         self.l.setItemHeight(50)
  56                 else:
  57                         self.l.setFont(0, gFont("Regular", 24))
  58                         self.l.setItemHeight(38)
  59
  60         def ok(self):
  61                 # a list entry has a "private" tuple as first entry...
  62                 l = self.getCurrent()
  63                 if l is None:
  64                         return
  65                 # ...containing (Actionmap, Context, Action, keydata).
  66                 # we returns this tuple to the callback.
  67                 self.callback(l[0], l[1], l[2])
  68
  69         def getCurrent(self):
  70                 sel = self.l.getCurrentSelection()
  71                 return sel and sel[0]
  72
  73         GUI_WIDGET = eListbox
  74
  75         def postWidgetCreate(self, instance):
  76                 instance.setContent(self.l)
  77                 instance.selectionChanged.get().append(self.selectionChanged)
  78
  79         def preWidgetRemove(self, instance):
  80                 instance.setContent(None)
  81                 instance.selectionChanged.get().remove(self.selectionChanged)
  82
  83         def selectionChanged(self):
  84                 for x in self.onSelChanged:
  85                         x()