models: update DiveComputerModel when core data is reset

To implement undo-semantics, we want a longer-lived dive-computer-model
(currently, it is regenerated when the dialog is opened). Therefore, it
must be reloaded when the core data is reset. Do this like for other
models: listen to the dataReset() signal of DiveListNotifier.

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

qt-models/divecomputermodel.cpp

@@ -2,11 +2,21 @@
 #include "qt-models/divecomputermodel.h"
 #include "core/dive.h"
 #include "core/divelist.h"
+#include "core/subsurface-qt/divelistnotifier.h"
 
 DiveComputerModel::DiveComputerModel(QObject *parent) : CleanerTableModel(parent),
 	dcs(device_table.devices)
 {
+	connect(&diveListNotifier, &DiveListNotifier::dataReset, this, &DiveComputerModel::update);
 	setHeaderDataStrings(QStringList() << "" << tr("Model") << tr("Device ID") << tr("Nickname"));
+	update();
+}
+
+void DiveComputerModel::update()
+{
+	beginResetModel();
+	dcs = device_table.devices;
+	endResetModel();
 }
 
 QVariant DiveComputerModel::data(const QModelIndex &index, int role) const

qt-models/divecomputermodel.h

@@ -25,6 +25,7 @@ public:
 public
 slots:
 	void remove(const QModelIndex &index);
+	void update();
 
 private:
 	std::vector<device> dcs;

qt-models/gpslistmodel.cpp

@@ -67,4 +67,3 @@ GpsListModel *GpsListModel::instance()
 	static GpsListModel self;
 	return &self;
 }
-