def setEditorData(self, editor, index):
     text = from_qvariant(index.model().data(index, Qt.DisplayRole), str)
     if index.column() in (MOD1, MOD2, MOD3, KEY):
         i = editor.findText(text)
         if i == -1:
             i = 0
         editor.setCurrentIndex(i)
     else:
         QItemDelegate.setEditorData(self, editor, index)

 def sizeHint(self, option, index):
     fm = option.fontMetrics
     if index.column() in (MOD1, MOD2, MOD3):
         if self.mod is None:
             w = 0
             for mod in self.modifiers:
                 cw = fm.width(mod)
                 if cw > w:
                     w = cw
                     self.mod = mod
         else:
             w = fm.width(self.mod)
         return QSize(w+20, fm.height())
     elif index.column() == KEY:
         if self.key is None:
             w = 0
             for key in self.keys:
                 cw = fm.width(key)
                 if cw > w:
                     w = cw
                     self.key = key
         else:
             w = fm.width(self.key)
         return QSize(w+20, fm.height())
     return QItemDelegate.sizeHint(self, option, index)

 def createEditor(self, parent, option, index):
     if index.column() in (MOD1, MOD2, MOD3):
         combobox = QComboBox(parent)
         combobox.addItems(self.modifiers)
         return combobox
     elif index.column() == KEY:
         combobox = QComboBox(parent)
         combobox.addItems(self.keys)
         return combobox
     else:
         return QItemDelegate.createEditor(self, parent, option, index)

 def __init__(self, dtype, parent=None):
     QItemDelegate.__init__(self, parent)
     self.dtype = dtype

 def __init__(self, parent=None):
     QItemDelegate.__init__(self, parent)

 def setModelData(self, editor, model, index):
     if index.column() in (MOD1, MOD2, MOD3, KEY):
         model.setData(index, to_qvariant(editor.currentText()))
     else:
         QItemDelegate.setModelData(self, editor, model, index)

 def __init__(self, parent=None):
     QItemDelegate.__init__(self, parent)
     self.modifiers = sorted(Key.MODIFIERNAMES.values())
     self.mod = None
     self.keys = sorted(Key.KEYS.values())
     self.key = None