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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from PySide6.QtCore import QDate, QObject, ClassInfo, Property, Signal
from PySide6.QtQml import QmlAnonymous, QmlAttached, QmlElement, ListProperty
from person import Person
# To be used on the @QmlElement decorator
# (QML_IMPORT_MINOR_VERSION is optional)
QML_IMPORT_NAME = "People"
QML_IMPORT_MAJOR_VERSION = 1
@QmlAnonymous
class BirthdayPartyAttached(QObject):
rsvp_changed = Signal()
def __init__(self, parent=None):
super().__init__(parent)
self._rsvp = QDate()
@Property(QDate, notify=rsvp_changed, final=True)
def rsvp(self):
return self._rsvp
@rsvp.setter
def rsvp(self, d):
if self._rsvp != d:
self._rsvp = d
self.rsvp_changed.emit()
@QmlElement
@ClassInfo(DefaultProperty="guests")
@QmlAttached(BirthdayPartyAttached)
class BirthdayParty(QObject):
host_changed = Signal()
guests_changed = Signal()
def __init__(self, parent=None):
super().__init__(parent)
self._host = None
self._guests = []
@Property(Person, notify=host_changed, final=True)
def host(self):
return self._host
@host.setter
def host(self, h):
if self._host != h:
self._host = h
self.host_changed.emit()
def guest(self, n):
return self._guests[n]
def guestCount(self):
return len(self._guests)
def appendGuest(self, guest):
self._guests.append(guest)
self.guests_changed.emit()
@staticmethod
def qmlAttachedProperties(self, o):
return BirthdayPartyAttached(o)
guests = ListProperty(Person, appendGuest, notify=guests_changed, final=True)
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