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Map: don't fully reset model on selection change

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When changing the selection the MapLocationModel was reset.
This lead to crashes on Qt-5.9 which are due to QML accessing
data that was freed during model reset. This putative Qt bug
doesn't happen on newer Qt versions. At least Qt-5.12 is known
to work.

Instead of fighting the bug, let's simply not reset the model
but send a dataChanged() for every element of the MapLocationModel.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-08-30 16:51:59 +02:00 • committed by Dirk Hohndel
parent cabe70be80
commit b39f2406c6
7 changed files with 25 additions and 1 deletions
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2
desktop-widgets/mainwindow.cpp
View file

@ -464,7 +464,7 @@ void MainWindow::selectionChanged()
configureToolbar();
enableDisableOtherDCsActions();
}
MapWidget::instance()->reload();
MapWidget::instance()->selectionChanged();
}
void MainWindow::on_actionNew_triggered()

7
desktop-widgets/mapwidget.cpp
View file

@ -84,6 +84,13 @@ bool MapWidget::editMode() const
return isReady && m_mapHelper->editMode();
}
void MapWidget::selectionChanged()
{
CHECK_IS_READY_RETURN_VOID();
m_mapHelper->selectionChanged();
m_mapHelper->centerOnSelectedDiveSite();
}
void MapWidget::selectedDivesChanged(const QList<int> &list)
{
CHECK_IS_READY_RETURN_VOID();

1
desktop-widgets/mapwidget.h
View file

@ -23,6 +23,7 @@ public:
static MapWidget *instance();
void reload();
void selectionChanged();
bool editMode() const;
public slots: