devices: connect DiveComputerModel to undo-command

Instead of modifying the device table directly, call the undo
commands. Moreover, don't keep our own copy in the mode - show
the original version. Connect to the appropriate signals.

This means that the calls from the DiveComputerManagement
dialog have to be removed, since this mode of editing is
not supported. The whole dialog will be removed in a future
commit.

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

CHANGELOG.md

@@ -1,3 +1,4 @@
+- desktop: make device management undoable
 - desktop: fix crash on drag&drop into tag widgets [#3030]
 - macOS: fix issue with HID dive computers like Suunto Eon Core/Steel [#2999]
 - windows: add missing modern Vista theme

desktop-widgets/divecomputermanagementdialog.cpp

@@ -36,22 +36,10 @@ DiveComputerManagementDialog *DiveComputerManagementDialog::instance()
 
 void DiveComputerManagementDialog::tryRemove(const QModelIndex &index)
 {
-	if (index.column() != DiveComputerModel::REMOVE)
-		return;
-
-	QMessageBox::StandardButton response = QMessageBox::question(
-	    this, TITLE_OR_TEXT(
-		      tr("Remove the selected dive computer?"),
-		      tr("Are you sure that you want to \n remove the selected dive computer?")),
-	    QMessageBox::Ok | QMessageBox::Cancel);
-
-	if (response == QMessageBox::Ok)
-		model->remove(index);
 }
 
 void DiveComputerManagementDialog::accept()
 {
-	model->keepWorkingList();
 	hide();
 	close();
 }

qt-models/divecomputermodel.cpp

@@ -1,13 +1,16 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "qt-models/divecomputermodel.h"
+#include "commands/command.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)
+DiveComputerModel::DiveComputerModel(QObject *parent) : CleanerTableModel(parent)
 {
 	connect(&diveListNotifier, &DiveListNotifier::dataReset, this, &DiveComputerModel::update);
+	connect(&diveListNotifier, &DiveListNotifier::deviceAdded, this, &DiveComputerModel::deviceAdded);
+	connect(&diveListNotifier, &DiveListNotifier::deviceDeleted, this, &DiveComputerModel::deviceDeleted);
+	connect(&diveListNotifier, &DiveListNotifier::deviceEdited, this, &DiveComputerModel::deviceEdited);
 	setHeaderDataStrings(QStringList() << "" << tr("Model") << tr("Device ID") << tr("Nickname"));
 	update();
 }
@@ -15,15 +18,15 @@ DiveComputerModel::DiveComputerModel(QObject *parent) : CleanerTableModel(parent
 void DiveComputerModel::update()
 {
 	beginResetModel();
-	dcs = device_table.devices;
 	endResetModel();
 }
 
 QVariant DiveComputerModel::data(const QModelIndex &index, int role) const
 {
-	if (index.row() < 0 || index.row() >= (int)dcs.size())
+	const device *dev = get_device(&device_table, index.row());
+	if (dev == nullptr)
 		return QVariant();
-	const device &node = dcs[index.row()];
+	const device &node = *dev;
 
 	if (role == Qt::DisplayRole || role == Qt::EditRole) {
 		switch (index.column()) {
@@ -51,7 +54,24 @@ QVariant DiveComputerModel::data(const QModelIndex &index, int role) const
 
 int DiveComputerModel::rowCount(const QModelIndex&) const
 {
-	return dcs.size();
+	return (int)device_table.devices.size();
+}
+
+void DiveComputerModel::deviceAdded(int idx)
+{
+	beginInsertRows(QModelIndex(), idx, idx);
+	endInsertRows();
+}
+
+void DiveComputerModel::deviceDeleted(int idx)
+{
+	beginRemoveRows(QModelIndex(), idx, idx);
+	endRemoveRows();
+}
+
+void DiveComputerModel::deviceEdited(int idx)
+{
+	dataChanged(index(idx, REMOVE), index(idx, NICKNAME));
 }
 
 Qt::ItemFlags DiveComputerModel::flags(const QModelIndex &index) const
@@ -65,29 +85,16 @@ Qt::ItemFlags DiveComputerModel::flags(const QModelIndex &index) const
 bool DiveComputerModel::setData(const QModelIndex &index, const QVariant &value, int)
 {
 	// We should test if the role == Qt::EditRole
-	if (index.row() < 0 || index.row() >= (int)dcs.size())
-		return false;
-
-	device &node = dcs[index.row()];
-	node.nickName = value.toString().toStdString();
-	emit dataChanged(index, index);
+	Command::editDeviceNickname(index.row(), value.toString());
 	return true;
 }
 
 void DiveComputerModel::remove(const QModelIndex &index)
 {
-	if (index.row() < 0 || index.row() >= (int)dcs.size())
+	int row = index.row();
+	if (row < 0 || row >= (int)device_table.devices.size())
 		return;
-	beginRemoveRows(QModelIndex(), index.row(), index.row());
-	dcs.erase(dcs.begin() + index.row());
-	endRemoveRows();
-}
-
-void DiveComputerModel::keepWorkingList()
-{
-	if (device_table.devices != dcs)
-		mark_divelist_changed(true);
-	device_table.devices = dcs;
+	Command::removeDevice(index.row());
 }
 
 // Convenience function to access alternative columns
@@ -129,5 +136,5 @@ void DiveComputerSortedModel::remove(const QModelIndex &index)
 	int row = mapToSource(index).row();
 	if (row < 0 || row >= (int)device_table.devices.size())
 		return;
-	device_table.devices.erase(device_table.devices.begin() + row);
+	Command::removeDevice(row);
 }

qt-models/divecomputermodel.h

@@ -20,15 +20,14 @@ public:
 	int rowCount(const QModelIndex &parent = QModelIndex()) const override;
 	Qt::ItemFlags flags(const QModelIndex &index) const override;
 	bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
-	void keepWorkingList();
 
-public
+private
 slots:
 	void remove(const QModelIndex &index);
 	void update();
-
-private:
-	std::vector<device> dcs;
+	void deviceAdded(int idx);
+	void deviceDeleted(int idx);
+	void deviceEdited(int idx);
 };
 
 class DiveComputerSortedModel : public QSortFilterProxyModel {