def styleNotifyChildren( obj, prop, value ): try: style = qmlAttachedPropertiesObject( StyleAttached, obj, False ) except TypeError: style = None # If `receiveNotify` returns false, this Style has a value for this property if style and not style.receiveNotify( prop, value ): return for child in obj.children(): if child is style: continue styleNotifyChildren( child, prop, value )
def lookupProperty( self, prop ):
obj = self.parent()
style = self
while obj:
if style:
print( f'style of {obj}: {obj.objectName()} looking for {prop}' )
value = getattr( style, '_' + prop )
if value: return value
else:
print( f'{obj}: {obj.objectName()} has no style' )
obj = getattr( obj, "parentItem", lambda: None)() or obj.parent()
if obj: style = qmlAttachedPropertiesObject( StyleAttached, obj, False )
return DEFAULT_STYLE[ prop ]
component = QQmlComponent(engine)
component.setData(QML, QUrl())
party = component.create()
if party is not None and party.host is not None:
print("\"%s\" is having a birthday!" % party.host.name)
if isinstance(party.host, Boy):
print("He is inviting:")
else:
print("She is inviting:")
for guest in party.guests:
attached = qmlAttachedPropertiesObject(BirthdayParty, guest, False)
if attached is not None:
rsvpDate = attached.property('rsvp')
else:
rsvpDate = QDate()
if rsvpDate.isNull():
print(" \"%s\" RSVP date: Hasn't RSVP'd" % guest.name)
else:
print(" \"%s\" RSVP date: %s" %
(guest.name, rsvpDate.toString()))
else:
for e in component.errors():
print("Error:", e.toString())
component = QQmlComponent(engine)
component.setData(QML, QUrl())
party = component.create()
if party is not None and party.host is not None:
print("\"%s\" is having a birthday!" % party.host.name)
if isinstance(party.host, Boy):
print("He is inviting:")
else:
print("She is inviting:")
for guest in party.guests:
attached = qmlAttachedPropertiesObject(BirthdayParty, guest, False)
if attached is not None:
rsvpDate = attached.property('rsvp')
else:
rsvpDate = QDate()
if rsvpDate.isNull():
print(" \"%s\" RSVP date: Hasn't RSVP'd" % guest.name)
else:
print(" \"%s\" RSVP date: %s" % (guest.name, rsvpDate.toString()))
party.startParty()
else:
for e in component.errors():
print("Error:", e.toString());
