undo: add device related undo commands

Add commands for deleting devices and editing device nicknames
to include the device-handling in the undo system.

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

commands/command_device.cpp

@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "command_device.h"
+#include "core/subsurface-qt/divelistnotifier.h"
+
+namespace Command {
+
+RemoveDevice::RemoveDevice(int indexIn) : index(indexIn)
+{
+	const device *dev = get_device(&device_table, index);
+	if (!dev)
+		return;
+
+	setText(Command::Base::tr("Delete device %1 (0x%2)").arg(QString::fromStdString(dev->model),
+								 QString::number(dev->deviceId)));
+}
+
+bool RemoveDevice::workToBeDone()
+{
+	return get_device(&device_table, index) != nullptr;
+}
+
+void RemoveDevice::redo()
+{
+	dev = *get_device(&device_table, index);
+	remove_from_device_table(&device_table, index);
+	emit diveListNotifier.deviceDeleted(index);
+}
+
+void RemoveDevice::undo()
+{
+	index = add_to_device_table(&device_table, &dev);
+	emit diveListNotifier.deviceAdded(index);
+}
+
+EditDeviceNickname::EditDeviceNickname(int indexIn, const QString &nicknameIn) :
+	index(indexIn), nickname(nicknameIn.toStdString())
+{
+	const device *dev = get_device(&device_table, index);
+	if (!dev)
+		return;
+
+	setText(Command::Base::tr("Set nickname of device %1 (0x%2) to %3").arg(QString::fromStdString(dev->model),
+										QString::number(dev->deviceId,1 ,16), nicknameIn));
+}
+
+bool EditDeviceNickname::workToBeDone()
+{
+	return get_device(&device_table, index) != nullptr;
+}
+
+void EditDeviceNickname::redo()
+{
+	device *dev = get_device_mutable(&device_table, index);
+	if (!dev)
+		return;
+	std::swap(dev->nickName, nickname);
+	emit diveListNotifier.deviceEdited(index);
+}
+
+void EditDeviceNickname::undo()
+{
+	redo(); // undo() and redo() do the same thing
+}
+
+} // namespace Command