QML reference examples: Add the add advanced1-Base-project

Task-number: PYSIDE-2206
Task-number: QTBUG-111033
Pick-to: 6.5
Change-Id: I8b162f2f5cb6e7099c74e751bcdf95dea5d7d118
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

1 files changed, 46 insertions, 0 deletions

diff --git a/examples/qml/tutorials/extending-qml-advanced/advanced1-Base-project/birthdayparty.py b/examples/qml/tutorials/extending-qml-advanced/advanced1-Base-project/birthdayparty.py
new file mode 100644
index 000000000..764815175
--- /dev/null
+++ b/examples/qml/tutorials/extending-qml-advanced/advanced1-Base-project/birthdayparty.py
@@ -0,0 +1,46 @@
+# Copyright (C) 2023 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+from PySide6.QtCore import QObject, Property, Signal
+from PySide6.QtQml import 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
+
+
+@QmlElement
+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()
+
+    guests = ListProperty(Person, appendGuest, notify=guests_changed, final=True)