Add default name/dir to svg export

Recent dir is saved in config.

Also:
- Fix button text in file chooser
- Fix appending .svg to file name

src/family_tree_view.py

@@ -620,7 +620,7 @@ def export_svg_view(self, *args):
         dialog.add_buttons(
             Gtk.STOCK_CANCEL,
             Gtk.ResponseType.CANCEL,
-            Gtk.STOCK_OPEN,
+            Gtk.STOCK_SAVE,
             Gtk.ResponseType.OK,
         )
 
@@ -634,16 +634,23 @@ def export_svg_view(self, *args):
         filter_any.add_pattern("*")
         dialog.add_filter(filter_any)
 
+        recent_dir = self._config.get("paths.familytreeview-recent-export-dir")
+        dialog.set_current_folder(recent_dir)
+        dbname = self.dbstate.db.get_dbname()
+        dialog.set_current_name(f"untitled_FTV_export_of_{dbname}.svg")
+
         response = dialog.run()
 
         if response != Gtk.ResponseType.OK:
             dialog.destroy()
             return
 
         file_name = dialog.get_filename()
+        dir_name = os.path.dirname(file_name)
+        self._config.set("paths.familytreeview-recent-export-dir", dir_name)
         dialog.destroy()
 
-        if file_name[:-4].lower() != ".svg":
+        if file_name[-4:].lower() != ".svg":
             file_name += ".svg"
 
         # TODO Catch errors of cairo write.

src/family_tree_view_config_provider.py

@@ -25,7 +25,7 @@
 from gi.repository import Gtk
 
 from gramps.gen.config import config
-from gramps.gen.const import GRAMPS_LOCALE, SIZE_LARGE, SIZE_NORMAL
+from gramps.gen.const import GRAMPS_LOCALE, SIZE_LARGE, SIZE_NORMAL, USER_HOME
 from gramps.gen.lib.eventtype import EventType
 
 from family_tree_view_config_provider_names import names_page, DEFAULT_ABBREV_RULES
@@ -109,6 +109,9 @@ def get_config_settings():
             ("experimental.familytreeview-adaptive-ancestor-generation-dist", False),
             ("experimental.familytreeview-connection-follow-on-click", False),
             ("experimental.familytreeview-canvas-font-size-ppi", 96),
+
+            # without config ui
+            ("paths.familytreeview-recent-export-dir", USER_HOME),
         )
 
     @staticmethod