From ab8e317b28672cc19fd04e994b9adf9b63f0c603 Mon Sep 17 00:00:00 2001
From: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Date: Wed, 4 Mar 2020 18:13:02 +0100
Subject: undo: implement renaming of events

There is a slight complexity here owing to the fact that the profile
works on a copy of the current dive: We get a copy of the event and
have to search for the original event in the current dive. This
could be done in the undo command. Nevertheless, here we do it in
the profile so that when in the future the profile can work on a
non-copied dive we can simply remove this function.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
---
 commands/command.cpp       |  5 +++++
 commands/command.h         |  1 +
 commands/command_event.cpp | 27 +++++++++++++++++++++++++++
 commands/command_event.h   | 12 ++++++++++++
 4 files changed, 45 insertions(+)

(limited to 'commands')

diff --git a/commands/command.cpp b/commands/command.cpp
index 44eb4b8f0..09e85f3b2 100644
--- a/commands/command.cpp
+++ b/commands/command.cpp
@@ -344,4 +344,9 @@ void addEventSetpointChange(struct dive *d, int dcNr, int seconds, pressure_t pO
 	execute(new AddEventSetpointChange(d, dcNr, seconds, pO2));
 }
 
+void renameEvent(struct dive *d, int dcNr, struct event *ev, const char *name)
+{
+	execute(new RenameEvent(d, dcNr, ev, name));
+}
+
 } // namespace Command
diff --git a/commands/command.h b/commands/command.h
index aa7c75ab3..eeb400bc4 100644
--- a/commands/command.h
+++ b/commands/command.h
@@ -109,6 +109,7 @@ void editTripNotes(dive_trip *trip, const QString &s);
 void addEventBookmark(struct dive *d, int dcNr, int seconds);
 void addEventDivemodeSwitch(struct dive *d, int dcNr, int seconds, int divemode);
 void addEventSetpointChange(struct dive *d, int dcNr, int seconds, pressure_t pO2);
+void renameEvent(struct dive *d, int dcNr, struct event *ev, const char *name);
 
 } // namespace Command
 
diff --git a/commands/command_event.cpp b/commands/command_event.cpp
index 7ecd4f070..1114182aa 100644
--- a/commands/command_event.cpp
+++ b/commands/command_event.cpp
@@ -70,4 +70,31 @@ AddEventSetpointChange::AddEventSetpointChange(struct dive *d, int dcNr, int sec
 	setText(tr("Add set point change")); // TODO: format pO2 value in bar or psi.
 }
 
+RenameEvent::RenameEvent(struct dive *d, int dcNr, struct event *ev, const char *name) : EventBase(d, dcNr),
+	eventToAdd(clone_event_rename(ev, name)),
+	eventToRemove(ev)
+{
+	setText(tr("Rename bookmark to %1").arg(name));
+}
+
+bool RenameEvent::workToBeDone()
+{
+	return true;
+}
+
+void RenameEvent::redoit()
+{
+	struct divecomputer *dc = get_dive_dc(d, dcNr);
+	swap_event(dc, eventToRemove, eventToAdd.get());
+	event *tmp = eventToRemove;
+	eventToRemove = eventToAdd.release();
+	eventToAdd.reset(tmp);
+}
+
+void RenameEvent::undoit()
+{
+	// Undo and redo do the same thing - they simply swap events
+	redoit();
+}
+
 } // namespace Command
diff --git a/commands/command_event.h b/commands/command_event.h
index a674e258b..ddfe6f7d4 100644
--- a/commands/command_event.h
+++ b/commands/command_event.h
@@ -58,6 +58,18 @@ public:
 	AddEventSetpointChange(struct dive *d, int dcNr, int seconds, pressure_t pO2);
 };
 
+class RenameEvent : public EventBase {
+public:
+	RenameEvent(struct dive *d, int dcNr, struct event *ev, const char *name);
+private:
+	bool workToBeDone() override;
+	void undoit() override;
+	void redoit() override;
+
+	OwningEventPtr eventToAdd;	// for undo and redo
+	event *eventToRemove;		// for undo and redo
+};
+
 } // namespace Command
 
 #endif // COMMAND_EVENT_H
-- 
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