Refactoring: move undo commands to top level

In the future we might want to use undo-commands for mobile as
well (even if not implementing undo).

Therefore, move the undo-command source from desktop-widgets
to their own commands top-level folder.

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

1 files changed, 58 insertions, 0 deletions

diff --git a/commands/command_edit_trip.h b/commands/command_edit_trip.h
new file mode 100644
index 000000000..ae41ca252
--- /dev/null
+++ b/commands/command_edit_trip.h
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0
+// Note: this header file is used by the undo-machinery and should not be included elsewhere.
+
+#ifndef COMMAND_EDIT_TRIP_H
+#define COMMAND_EDIT_TRIP_H
+
+#include "command_base.h"
+#include "core/subsurface-qt/DiveListNotifier.h"
+
+#include <QVector>
+
+// These are commands that edit individual fields of a a trip.
+// The implementation follows the (rather verbose) OO-style of the dive-edit commands.
+// But here, no template is used as the two fields are both of string type.
+
+// We put everything in a namespace, so that we can shorten names without polluting the global namespace
+namespace Command {
+
+class EditTripBase : public Base {
+	bool workToBeDone() override;
+
+	dive_trip *trip; // Trip to be edited.
+public:
+	EditTripBase(dive_trip *trip, const QString &newValue);
+
+protected:
+	QString value; // Value to be set
+	void undo() override;
+	void redo() override;
+
+	// Get and set functions to be overriden by sub-classes.
+	virtual void set(struct dive_trip *t, const QString &) const = 0;
+	virtual QString data(struct dive_trip *t) const = 0;
+	virtual QString fieldName() const = 0;	// Name of the field, used to create the undo menu-entry
+	virtual TripField fieldId() const = 0;
+};
+
+class EditTripLocation : public EditTripBase {
+public:
+	using EditTripBase::EditTripBase;	// Use constructor of base class.
+	void set(dive_trip *t, const QString &s) const override;
+	QString data(dive_trip *t) const override;
+	QString fieldName() const override;
+	TripField fieldId() const override;
+};
+
+class EditTripNotes : public EditTripBase {
+public:
+	using EditTripBase::EditTripBase;	// Use constructor of base class.
+	void set(dive_trip *t, const QString &s) const override;
+	QString data(dive_trip *t) const override;
+	QString fieldName() const override;
+	TripField fieldId() const override;
+};
+
+} // namespace Command
+
+#endif