def createTimeSignatureWidget(self):
     self.timeSignatureLabel = QLabel()
     self.timeSignature = QComboBox(editable=True)
     icons = {"(4/4)": symbols.icon("time_c44"), "(2/2)": symbols.icon("time_c22")}
     self.timeSignature.setModel(listmodel.ListModel(timeSignaturePresets, self.timeSignature, icon=icons.get))
     self.timeSignature.setCompleter(None)
     self.timeSignatureLabel.setBuddy(self.timeSignature)

def icon(name):
    """Returns an icon if defined."""
    d = get(name).variables
    icon = d.get('icon')
    if icon:
        return icons.get(icon)
    icon = d.get('symbol')
    if icon:
        return symbols.icon(icon)

 def createPickupWidget(self):
     self.pickupLabel = QLabel()
     self.pickup = QComboBox()
     pickups = ['']
     pickups.extend(durations)
     self.pickup.setModel(listmodel.ListModel(pickups, self.pickup,
         display = lambda item: item or _("None"),
         icon = lambda item: symbols.icon('note_{0}'.format(item.replace('.', 'd'))) if item else None))
     self.pickup.view().setIconSize(QSize(22, 22))
     self.pickupLabel.setBuddy(self.pickup)

 def createMetronomeWidget(self):
     self.metronomeLabel = QLabel()
     self.metronomeNote = QComboBox()
     self.metronomeNote.setModel(listmodel.ListModel(durations, display=None,
         icon = lambda item: symbols.icon('note_{0}'.format(item.replace('.', 'd')))))
     self.metronomeNote.setCurrentIndex(durations.index('4'))
     self.metronomeNote.view().setIconSize(QSize(22, 22))
     self.metronomeEqualSign = QLabel('=')
     self.metronomeEqualSign.setFixedWidth(self.metronomeEqualSign.minimumSizeHint().width())
     self.metronomeValue = QComboBox(editable=True)
     self.metronomeValue.setModel(listmodel.ListModel(metronomeValues, self.metronomeValue,
         display=format))
     self.metronomeValue.setCompleter(None)
     self.metronomeValue.setValidator(QIntValidator(0, 999, self.metronomeValue))
     self.metronomeValue.setCurrentIndex(metronomeValues.index(100))
     self.metronomeTempo = widgets.tempobutton.TempoButton()
     self.metronomeTempo.tempo.connect(self.setMetronomeValue)
     self.metronomeLabel.setBuddy(self.metronomeNote)

 def actionData(self):
     """Should yield name, icon, function (may be None) for every action."""
     for name, title in self.actionTexts():
         yield name, symbols.icon(name), None

 def icon(self):
     """Should return an icon for our tab."""
     return symbols.icon("spanner_phrasingslur")

 def actionData(self):
     self._barlines = {}
     for name, ly_text, title in self.barlines():
         yield name, symbols.icon(name), None
         self._barlines[name] = ly_text

 def actionData(self):
     """Should yield name, icon, function (may be None) for every action."""
     for m in dynamic_marks:
         name = 'dynamic_' + m
         yield name, symbols.icon(name), None