51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
#pragma once
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#include <QQuickItem>
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#include <QtGlobal>
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#include <memory>
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#include <mutex>
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namespace Status::Testing
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{
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///
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/// \brief Monitor output for tests and declaratively control message handler availability
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///
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/// The captured buffer is global and each instance has a reference to it and a start pointer
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/// from its creation or last clear call
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/// The first instance installs a QT message handler @see Qt::qInstallMessageHandler then
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/// All other instances share the global buffer until the last instance goes out of scope and deregisters
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/// from Qt's global message handler and destroyes the buffer
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///
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/// \todo Check that QML doesn't keep instance between test runs
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///
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class MonitorQtOutput : public QQuickItem
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{
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Q_OBJECT
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QML_ELEMENT
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public:
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MonitorQtOutput();
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~MonitorQtOutput();
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/// Return captured output from the global buffer. That is from the instantiation or last `clear()` was called
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Q_INVOKABLE QString qtOuput();
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/// Reset buffer start after the last line. qtOutput won't return anything until new output is captured
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Q_INVOKABLE void restartCapturing();
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signals:
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private:
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static void qtMessageOutput(QtMsgType type, const QMessageLogContext& context, const QString& msg);
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static QtMessageHandler m_previousHandler;
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// Use it to keep track of qInstallMessageHandler call
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static std::weak_ptr<QString> m_qtMessageOutputForSharing;
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static std::mutex m_mutex;
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std::shared_ptr<QString> m_thisMessageOutput;
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int m_start = 0;
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};
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} // namespace Status::Testing
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