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, QCoreApplication, QObject, QUrl
48from PyQt5.QtQml import (qmlRegisterType, QQmlComponent, QQmlEngine,
49        QQmlListProperty)
50
51
52QML = b'''
53import People 1.0
54
55BirthdayParty {
56    host: Boy {
57        name: "Bob Jones"
58        shoeSize: 12
59    }
60
61    guests: [
62        Boy { name: "Leo Hodges" },
63        Boy { name: "Jack Smith" },
64        Girl { name: "Anne Brown" }
65    ]
66}
67'''
68
69
70class Person(QObject):
71    def __init__(self, parent=None):
72        super(Person, self).__init__(parent)
73
74        self._name = ''
75        self._shoeSize = 0
76
77    @pyqtProperty(str)
78    def name(self):
79        return self._name
80
81    @name.setter
82    def name(self, name):
83        self._name = name
84
85    @pyqtProperty(int)
86    def shoeSize(self):
87        return self._shoeSize
88
89    @shoeSize.setter
90    def shoeSize(self, shoeSize):
91        self._shoeSize = shoeSize
92
93
94class Boy(Person):
95    pass
96
97
98class Girl(Person):
99    pass
100
101
102class BirthdayParty(QObject):
103    def __init__(self, parent=None):
104        super(BirthdayParty, self).__init__(parent)
105
106        self._host = None
107        self._guests = []
108
109    @pyqtProperty(Person)
110    def host(self):
111        return self._host
112
113    @host.setter
114    def host(self, host):
115        self._host = host
116
117    @pyqtProperty(QQmlListProperty)
118    def guests(self):
119        return QQmlListProperty(Person, self, self._guests)
120
121
122app = QCoreApplication(sys.argv)
123
124qmlRegisterType(BirthdayParty, "People", 1, 0, "BirthdayParty")
125qmlRegisterType(Person)
126qmlRegisterType(Boy, "People", 1, 0, "Boy")
127qmlRegisterType(Girl, "People", 1, 0, "Girl")
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
139    if isinstance(party.host, Boy):
140        print("He is inviting:")
141    else:
142        print("She is inviting:")
143
144    for guest in party.guests:
145        print("    \"%s\"" % guest.name)
146else:
147    for e in component.errors():
148        print("Error:", e.toString());
149