mifr/subsurface
1
0
Fork 0
mirror of https://github.com/subsurface/subsurface.git synced 2025-02-19 22:16:15 +00:00
Code Issues Projects Releases Packages Wiki Activity

Cleanup: unify idiosyncratic singletons

Browse source 
The way we handle singletons in QML, QML insists on allocating the
objects. This leads to a very idiosyncratic way of handling
singletons: The global instance pointer is set in the constructor.

Unify all these by implementing a "SillySingleton" template. All
of the weird singleton-classes can derive from this template and
don't have to bother with reimplementing the instance() function
with all the safety-checks, etc.

This serves firstly as documentation but also improves debugging
as we will now see wanted and unwanted creation and destruction
of these weird singletons.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-09-22 14:33:33 +02:00 • committed by Dirk Hohndel
parent f20d6187f0
commit 05200f9266
13 changed files with 86 additions and 89 deletions
Download patch file Download diff file Expand all files Collapse all files

10
desktop-widgets/mainwindow.cpp
View file

@ -109,8 +109,6 @@ extern "C" int updateProgress(const char *text)
return progressDialogCanceled;
}
MainWindow *MainWindow::m_Instance = nullptr;
extern "C" void showErrorFromC(char *buf)
{
QString error(buf);
@ -128,8 +126,6 @@ MainWindow::MainWindow() : QMainWindow(),
survey(nullptr),
findMovedImagesDialog(nullptr)
{
Q_ASSERT_X(m_Instance == NULL, "MainWindow", "MainWindow recreated!");
m_Instance = this;
ui.setupUi(this);
read_hashes();
Command::init();
@ -357,7 +353,6 @@ MainWindow::MainWindow() : QMainWindow(),
MainWindow::~MainWindow()
{
write_hashes();
m_Instance = nullptr;
}
void MainWindow::setupSocialNetworkMenu()
@ -398,11 +393,6 @@ void MainWindow::setDefaultState()
ui.bottomLeft->currentWidget()->setEnabled(false);
}
MainWindow *MainWindow::instance()
{
return m_Instance;
}
// This gets called after one or more dives were added, edited or downloaded for a dive computer
void MainWindow::refreshDisplay(bool doRecreateDiveList)
{