GUI: Refactor default savegame description creation.

Formerly the GMM, AGI and SCI duplicated the logic for USE_SAVEGAME_TIMESTAMP.
Now I added a method to SaveLoadChooser instead, which takes care of this. This
might not be the best placement of such a functionality, thus I added a TODO
which talks about moving it to a better place.

2 files changed, 28 insertions, 0 deletions

diff --git a/gui/saveload.cpp b/gui/saveload.cpp
index 366efa7a90..67d871e133 100644
--- a/gui/saveload.cpp
+++ b/gui/saveload.cpp
@@ -21,6 +21,7 @@
 
 #include "common/config-manager.h"
 #include "common/translation.h"
+#include "common/system.h"
 
 #include "gui/widgets/list.h"
 #include "gui/message.h"
@@ -126,6 +127,18 @@ const Common::String &SaveLoadChooser::getResultString() const {
 	return (selItem >= 0) ? _list->getSelectedString() : _resultString;
 }
 
+Common::String SaveLoadChooser::createDefaultSaveDescription(const int slot) const {
+#if defined(USE_SAVEGAME_TIMESTAMP)
+	TimeDate curTime;
+	g_system->getTimeAndDate(curTime);
+	curTime.tm_year += 1900; // fixup year
+	curTime.tm_mon++; // fixup month
+	return Common::String::format("%04d.%02d.%02d / %02d:%02d:%02d", curTime.tm_year, curTime.tm_mon, curTime.tm_mday, curTime.tm_hour, curTime.tm_min, curTime.tm_sec);
+#else
+	return Common::String::format("Save %d", slot + 1);
+#endif
+}
+
 void SaveLoadChooser::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
 	int selItem = _list->getSelected();
 
diff --git a/gui/saveload.h b/gui/saveload.h
index dc0f0429c7..e81b10d214 100644
--- a/gui/saveload.h
+++ b/gui/saveload.h
@@ -79,6 +79,21 @@ public:
 
 	const Common::String &getResultString() const;
 
+	/**
+	 * Creates a default save description for the specified slot. Depending
+	 * on the ScummVM configuration this might be a simple "Slot #" description
+	 * or the current date and time.
+	 *
+	 * TODO: This might not be the best place to put this, since engines not
+	 * using this class might want to mimic the same behavior. Check whether
+	 * moving this to a better place makes sense and find what this place would
+	 * be.
+	 *
+	 * @param slot The slot number (must be >= 0).
+	 * @return The slot description.
+	 */
+	Common::String createDefaultSaveDescription(const int slot) const;
+
 	virtual void reflowLayout();
 
 	virtual void close();