[chronojump] LastBackupDirStr is stored and reused on next backup

[Xavier de Blas <xaviblas src gnome org>]

commit baa63c8def2d6c0f799437016094fe6de3387635
Author: Xavier de Blas <xaviblas gmail com>
Date:   Fri Aug 20 11:15:28 2021 +0200

    LastBackupDirStr is stored and reused on next backup

 src/gui/app1/session/backup.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
---
diff --git a/src/gui/app1/session/backup.cs b/src/gui/app1/session/backup.cs
index c2e879342..fa0bae08b 100644
--- a/src/gui/app1/session/backup.cs
+++ b/src/gui/app1/session/backup.cs
@@ -28,7 +28,9 @@ using Mono.Unix;
 public partial class ChronoJumpWindow
 {
        string app1s_fileDB;
-       string app1s_fileCopy;
+       string app1s_fileCopy; //contains chronojump_datetime
+       string app1s_parentCopy; //is the dir selected by app1s_fc, before adding chronojump_datetime,
+                               //nice to store in SQL and reuse in next backups
        Gtk.FileChooserDialog app1s_fc;
        static UtilCopy app1s_uc;
        private Thread app1s_threadBackup;
@@ -192,8 +194,12 @@ public partial class ChronoJumpWindow
                                Catalog.GetString("Select"),ResponseType.Accept
                                );
 
+               app1s_fc.SetCurrentFolder(preferences.lastBackupDir);
+
                if (app1s_fc.Run() == (int)ResponseType.Accept)
                {
+                       app1s_parentCopy = app1s_fc.Filename;
+
                        //if multimedia_and_encoder, then copy the folder. If not checked, then copy only the 
db file
                        //if(check_backup_multimedia_and_encoder.Active)
                                app1s_fileCopy = app1s_fc.Filename + Path.DirectorySeparatorChar + 
"chronojump_" + UtilDate.ToFile();
@@ -272,6 +278,7 @@ public partial class ChronoJumpWindow
                        Sqlite.Open(); // ---->
 
                        DateTime nowDT = DateTime.Now;
+                       SqlitePreferences.Update(SqlitePreferences.LastBackupDirStr, app1s_parentCopy, true);
                        SqlitePreferences.Update(SqlitePreferences.LastBackupDatetimeStr, 
UtilDate.ToSql(nowDT), true);
                        SqlitePreferences.Update(SqlitePreferences.BackupScheduledCreatedDateStr, 
UtilDate.ToSql(nowDT), true);