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Move ExceptionCatchingApplication class to its own header

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This commit is contained in:
Bill Somerville 2020-09-24 18:32:58 +01:00
parent e50e712fdd
commit e83b91de95
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GPG Key ID: D864B06D1E81618F
2 changed files with 47 additions and 34 deletions
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45
ExceptionCatchingApplication.hpp Normal file
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@ -0,0 +1,45 @@
#ifndef EXCEPTION_CATCHING_APPLICATION_HPP__
#define EXCEPTION_CATCHING_APPLICATION_HPP__
#include <QApplication>
#include "widgets/MessageBox.hpp"
class QObject;
class QEvent;
//
// We can't use the GUI after QApplication::exit() is called so
// uncaught exceptions can get lost on Windows systems where there is
// no console terminal, so here we override QApplication::notify() and
// wrap the base class call with a try block to catch and display
// exceptions in a message box.
//
class ExceptionCatchingApplication
: public QApplication
{
public:
explicit ExceptionCatchingApplication (int& argc, char * * argv)
: QApplication {argc, argv}
{
}
bool notify (QObject * receiver, QEvent * e) override
{
try
{
return QApplication::notify (receiver, e);
}
catch (std::exception const& e)
{
MessageBox::critical_message (nullptr, "Fatal error", e.what ());
throw;
}
catch (...)
{
MessageBox::critical_message (nullptr, "Unexpected fatal error");
throw;
}
}
};
#endif

36
main.cpp
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@ -9,7 +9,6 @@
#include <QSharedMemory>
#include <QTemporaryFile>
#include <QDateTime>
#include <QApplication>
#include <QLocale>
#include <QTranslator>
#include <QRegularExpression>
@ -28,6 +27,7 @@
#include <QSqlQuery>
#include <QSqlError>
#include "ExceptionCatchingApplication.hpp"
#include "Logger.hpp"
#include "revision_utils.hpp"
#include "MetaDataRegistry.hpp"
@ -63,38 +63,6 @@ namespace
}
} seeding;
#endif
// We can't use the GUI after QApplication::exit() is called so
// uncaught exceptions can get lost on Windows systems where there
// is no console terminal, so here we override
// QApplication::notify() and wrap the base class call with a try
// block to catch and display exceptions in a message box.
class ExceptionCatchingApplication final
: public QApplication
{
public:
explicit ExceptionCatchingApplication (int& argc, char * * argv)
: QApplication {argc, argv}
{
}
bool notify (QObject * receiver, QEvent * e) override
{
try
{
return QApplication::notify (receiver, e);
}
catch (std::exception const& e)
{
MessageBox::critical_message (nullptr, "Fatal error", e.what ());
throw;
}
catch (...)
{
MessageBox::critical_message (nullptr, "Unexpected fatal error");
throw;
}
}
};
}
int main(int argc, char *argv[])
@ -248,7 +216,7 @@ int main(int argc, char *argv[])
// Create a unique writeable temporary directory in a suitable location
bool temp_ok {false};
QString unique_directory {QApplication::applicationName ()};
QString unique_directory {ExceptionCatchingApplication::applicationName ()};
do
{
if (!temp_dir.mkpath (unique_directory)