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-/****************************************************************************
-**
-** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtWebEngine module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:GPL-EXCEPT$
-** 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.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-#ifndef WAITFORSIGNAL_H
-#define WAITFORSIGNAL_H
-
-#include <QObject>
-#include <QTestEventLoop>
-
-#include <utility>
-
-// Implementation details of waitForSignal.
-namespace {
- // Wraps a functor to set a flag and exit from event loop if called.
- template <class SignalHandler>
- struct waitForSignal_SignalHandlerWrapper {
- waitForSignal_SignalHandlerWrapper(SignalHandler &&sh)
- : signalHandler(std::forward<SignalHandler>(sh)) {}
-
- template <class... Args>
- void operator()(Args && ... args) {
- signalHandler(std::forward<Args>(args)...);
- hasBeenCalled = true;
- loop.exitLoop();
- }
-
- SignalHandler &&signalHandler;
- QTestEventLoop loop;
- bool hasBeenCalled = false;
- };
-
- // No-op functor.
- struct waitForSignal_DefaultSignalHandler {
- template <class... Args>
- void operator()(Args && ...) {}
- };
-} // namespace
-
-// Wait for a signal to be emitted.
-//
-// The given functor is called with the signal arguments allowing the arguments
-// to be modified before returning from the signal handler (unlike QSignalSpy).
-template <class Sender, class Signal, class SignalHandler>
-bool waitForSignal(Sender &&sender, Signal &&signal, SignalHandler &&signalHandler, int timeout = 15000)
-{
- waitForSignal_SignalHandlerWrapper<SignalHandler> signalHandlerWrapper(
- std::forward<SignalHandler>(signalHandler));
- auto connection = QObject::connect(
- std::forward<Sender>(sender),
- std::forward<Signal>(signal),
- std::ref(signalHandlerWrapper));
- signalHandlerWrapper.loop.enterLoopMSecs(timeout);
- QObject::disconnect(connection);
- return signalHandlerWrapper.hasBeenCalled;
-}
-
-template <class Sender, class Signal>
-bool waitForSignal(Sender &&sender, Signal &&signal, int timeout = 15000)
-{
- return waitForSignal(std::forward<Sender>(sender),
- std::forward<Signal>(signal),
- waitForSignal_DefaultSignalHandler(),
- timeout);
-}
-
-#endif // !WAITFORSIGNAL_H