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1 | #ifndef SCIQLOP_SIGNALWAITER_H | |
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2 | #define SCIQLOP_SIGNALWAITER_H | |
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3 | ||
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4 | #include "CoreGlobal.h" | |
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5 | ||
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6 | #include <QEventLoop> | |
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7 | ||
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8 | /** | |
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9 | * Class for synchronously waiting for the reception of a signal. The signal to wait is passed to | |
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10 | * the construction of the object. When starting the wait, a timeout can be set to exit if the | |
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11 | * signal has not been sent | |
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12 | */ | |
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13 | class SCIQLOP_CORE_EXPORT SignalWaiter : public QObject { | |
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14 | Q_OBJECT | |
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15 | public: | |
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16 | /** | |
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17 | * Ctor | |
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18 | * @param object the sender of the signal | |
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19 | * @param signal the signal to listen | |
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20 | */ | |
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21 | explicit SignalWaiter(QObject &sender, const char *signal); | |
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22 | ||
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23 | /** | |
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24 | * Starts the signal and leaves after the signal has been received, or after the timeout | |
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25 | * @param timeout the timeout set (if 0, uses a default timeout) | |
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26 | * @return true if the signal was sent, false if the timeout occured | |
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27 | */ | |
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28 | bool wait(int timeout); | |
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29 | ||
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30 | private: | |
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31 | bool m_Timeout; | |
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32 | QEventLoop m_EventLoop; | |
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33 | ||
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34 | private slots: | |
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35 | void timeout(); | |
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36 | }; | |
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37 | ||
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38 | #endif // SCIQLOP_SIGNALWAITER_H | |
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1 | #include "Common/SignalWaiter.h" | |
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2 | ||
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3 | #include <QTimer> | |
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4 | ||
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5 | namespace { | |
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6 | ||
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7 | const auto DEFAULT_TIMEOUT = 30000; | |
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8 | ||
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9 | } // namespace | |
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10 | ||
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11 | SignalWaiter::SignalWaiter(QObject &sender, const char *signal) : m_Timeout{false} | |
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12 | { | |
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13 | connect(&sender, signal, &m_EventLoop, SLOT(quit())); | |
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14 | } | |
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15 | ||
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16 | bool SignalWaiter::wait(int timeout) | |
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17 | { | |
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18 | if (timeout == 0) { | |
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19 | timeout = DEFAULT_TIMEOUT; | |
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20 | } | |
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21 | ||
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22 | QTimer timer{}; | |
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23 | timer.setInterval(timeout); | |
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24 | timer.start(); | |
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25 | connect(&timer, &QTimer::timeout, this, &SignalWaiter::timeout); | |
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26 | ||
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27 | m_EventLoop.exec(); | |
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28 | ||
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29 | return !m_Timeout; | |
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30 | } | |
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31 | ||
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32 | void SignalWaiter::timeout() | |
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33 | { | |
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34 | m_Timeout = true; | |
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35 | m_EventLoop.quit(); | |
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36 | } | |
| @@ -5,6 +5,7 catalogueapi_dep = dependency('CatalogueAPI', required : true, fallback:['Catalo | |||
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5 | 5 | |
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6 | 6 | core_moc_headers = [ |
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7 | 7 | 'include/Catalogue/CatalogueController.h', |
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8 | 'include/Common/SignalWaiter.h', | |
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8 | 9 | 'include/Data/IDataProvider.h', |
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9 | 10 | 'include/DataSource/DataSourceController.h', |
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10 | 11 | 'include/DataSource/DataSourceItemAction.h', |
| @@ -24,6 +25,7 core_moc_files = qt5.preprocess(moc_headers : core_moc_headers) | |||
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24 | 25 | |
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25 | 26 | core_sources = [ |
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26 | 27 | 'src/Common/DateUtils.cpp', |
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28 | 'src/Common/SignalWaiter.cpp', | |
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27 | 29 | 'src/Common/StringUtils.cpp', |
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28 | 30 | 'src/Common/MimeTypesDef.cpp', |
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29 | 31 | 'src/Catalogue/CatalogueController.cpp', |
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