1#!/usr/bin/env python
2
3
4#############################################################################
5##
6## Copyright (C) 2013 Riverbank Computing Limited.
7## Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
8## All rights reserved.
9##
10## This file is part of the examples of PyQt.
11##
12## $QT_BEGIN_LICENSE:BSD$
13## You may use this file under the terms of the BSD license as follows:
14##
15## "Redistribution and use in source and binary forms, with or without
16## modification, are permitted provided that the following conditions are
17## met:
18##   * Redistributions of source code must retain the above copyright
19##     notice, this list of conditions and the following disclaimer.
20##   * Redistributions in binary form must reproduce the above copyright
21##     notice, this list of conditions and the following disclaimer in
22##     the documentation and/or other materials provided with the
23##     distribution.
24##   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
25##     the names of its contributors may be used to endorse or promote
26##     products derived from this software without specific prior written
27##     permission.
28##
29## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
40## $QT_END_LICENSE$
41##
42#############################################################################
43
44
45import sys
46
47from PyQt5.QtCore import (pyqtProperty, pyqtSlot, QCoreApplication, QObject,
48        QUrl)
49from PyQt5.QtQml import (qmlRegisterType, QQmlComponent, QQmlEngine,
50        QQmlListProperty)
51
52
53QML = b'''
54import QtQuick 2.0
55import People 1.0
56
57BirthdayParty {
58    host: Person {
59        name: "Bob Jones"
60        shoeSize: 12
61    }
62
63    guests: [
64        Person { name: "Leo Hodges" },
65        Person { name: "Jack Smith" },
66        Person { name: "Anne Brown" }
67    ]
68
69    Component.onCompleted: invite("William Green")
70}
71'''
72
73
74class Person(QObject):
75    def __init__(self, parent=None):
76        super(Person, self).__init__(parent)
77
78        self._name = ''
79        self._shoeSize = 0
80
81    @pyqtProperty(str)
82    def name(self):
83        return self._name
84
85    @name.setter
86    def name(self, name):
87        self._name = name
88
89    @pyqtProperty(int)
90    def shoeSize(self):
91        return self._shoeSize
92
93    @shoeSize.setter
94    def shoeSize(self, shoeSize):
95        self._shoeSize = shoeSize
96
97
98class BirthdayParty(QObject):
99    def __init__(self, parent=None):
100        super(BirthdayParty, self).__init__(parent)
101
102        self._host = None
103        self._guests = []
104
105    @pyqtProperty(Person)
106    def host(self):
107        return self._host
108
109    @host.setter
110    def host(self, host):
111        self._host = host
112
113    @pyqtProperty(QQmlListProperty)
114    def guests(self):
115        return QQmlListProperty(Person, self, self._guests)
116
117    @pyqtSlot(str)
118    def invite(self, name):
119        person = Person(self)
120        person.name = name
121        self._guests.append(person)
122
123
124app = QCoreApplication(sys.argv)
125
126qmlRegisterType(BirthdayParty, "People", 1, 0, "BirthdayParty")
127qmlRegisterType(Person, "People", 1, 0, "Person")
128
129engine = QQmlEngine()
130
131component = QQmlComponent(engine)
132component.setData(QML, QUrl())
133
134party = component.create()
135
136if party is not None and party.host is not None:
137    print("\"%s\" is having a birthday!" % party.host.name)
138    print("They are inviting:")
139
140    for guest in party.guests:
141        print("    \"%s\"" % guest.name)
142else:
143    for e in component.errors():
144        print("Error:", e.toString());
145