Fix destination selection and title pane handling

scripts/wk/clone/ddrescue.py

@@ -348,9 +348,8 @@ class State():
     self.progress_out: pathlib.Path = self.log_dir.joinpath('progress.out')
     self.mode: str = '?'
     self.source: hw_disk.Disk | None = None
-    self.working_dir: pathlib.Path = pathlib.Path()
+    self.working_dir: pathlib.Path | None = None
     self.ui: tui.TUI = tui.TUI('Source')
-    self.ui.add_title_pane('Destination')
 
   def _add_block_pair(self, source: hw_disk.Disk, destination: pathlib.Path) -> None:
     """Add BlockPair object and run safety checks."""
@@ -655,7 +654,7 @@ class State():
       keep_history=True,
       timestamp=False,
       )
-    self.ui.set_progress_file(self.progress_out)
+    self.ui.set_progress_file(str(self.progress_out))
 
     # Set mode
     self.mode = set_mode(docopt_args)
@@ -1109,13 +1108,14 @@ class State():
         ),
       source_str,
       )
-    self.ui.add_title_pane(
-      ansi.color_string(
-        ['Destination', '' if dest_exists else ' (Missing)'],
-        ['BLUE', 'RED'],
-        ),
-      dest_str,
-      )
+    if dest_str:
+      self.ui.add_title_pane(
+        ansi.color_string(
+          ['Destination', '' if dest_exists else ' (Missing)'],
+          ['BLUE', 'RED'],
+          ),
+        dest_str,
+        )
 
 
 # Functions
@@ -1620,6 +1620,8 @@ def get_object(path) -> hw_disk.Disk | pathlib.Path:
   obj = None
 
   # Bail early
+  if path is None:
+    return obj
   if not path:
     raise FileNotFoundError(f'Path provided does not exist: {path}')