Cleanup: use DiveTripModelBase::clear() to reset the log

Introduce a DiveTripModelBase::clear() function that cleanly
clears all dive data inside a beginResetModel()/endResetModel()
pair. Thus, the UI will be cleanly reset and we can remove
explicit calls to
 - graphics->setEmptyState()
 - mainTab->clearTabs()
 - mainTab->clearTabs()
 - diveList->reload()
from MainWindow::closeCurrentFile().

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

1 files changed, 3 insertions, 0 deletions

diff --git a/qt-models/divetripmodel.h b/qt-models/divetripmodel.h
index dc0d4b299..6b3f26fd7 100644
--- a/qt-models/divetripmodel.h
+++ b/qt-models/divetripmodel.h
@@ -70,6 +70,9 @@ public:
 	// by instance().
 	static void resetModel(Layout layout);
 
+	// Clear all dives
+	void clear();
+
 	Qt::ItemFlags flags(const QModelIndex &index) const;
 	QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
 	bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;