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#############################################################################
##
## Copyright (C) 2016 The Qt Company Ltd.
## Contact: https://www.qt.io/licensing/
##
## This file is part of the test suite of PySide2.
##
## $QT_BEGIN_LICENSE:GPL-EXCEPT$
## Commercial License Usage
## Licensees holding valid commercial Qt licenses may use this file in
## accordance with the commercial license agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and The Qt Company. For licensing terms
## and conditions see https://www.qt.io/terms-conditions. For further
## information use the contact form at https://www.qt.io/contact-us.
##
## GNU General Public License Usage
## Alternatively, this file may be used under the terms of the GNU
## General Public License version 3 as published by the Free Software
## Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
## included in the packaging of this file. Please review the following
## information to ensure the GNU General Public License requirements will
## be met: https://www.gnu.org/licenses/gpl-3.0.html.
##
## $QT_END_LICENSE$
##
#############################################################################
'''Connecting lambda to gui signals'''
import unittest
from PySide2.QtCore import QObject, SIGNAL
try:
from PySide2.QtWidgets import QSpinBox, QPushButton
hasQtGui = True
except ImportError:
hasQtGui = False
from helper import UsesQApplication
if hasQtGui:
class Control:
def __init__(self):
self.arg = False
class QtGuiSigLambda(UsesQApplication):
def testButton(self):
#Connecting a lambda to a QPushButton.clicked()
obj = QPushButton('label')
ctr = Control()
func = lambda: setattr(ctr, 'arg', True)
QObject.connect(obj, SIGNAL('clicked()'), func)
obj.click()
self.assertTrue(ctr.arg)
QObject.disconnect(obj, SIGNAL('clicked()'), func)
def testSpinButton(self):
#Connecting a lambda to a QPushButton.clicked()
obj = QSpinBox()
ctr = Control()
arg = 444
func = lambda x: setattr(ctr, 'arg', 444)
QObject.connect(obj, SIGNAL('valueChanged(int)'), func)
obj.setValue(444)
self.assertEqual(ctr.arg, arg)
QObject.disconnect(obj, SIGNAL('valueChanged(int)'), func)
if __name__ == '__main__':
unittest.main()
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