Fix focus getting lost when the details panel is closed

ChangeLog.md

@@ -8,6 +8,9 @@
   editing dialog now style locally-known tags differently from suggestions
   that haven't ever been used by the user.
   ([#115](https://github.com/davep/braindrop/pull/115))
+- Fixed focus getting lost for a moment if it was within the details panel
+  and the details panel was closed.
+  ([#114](https://github.com/davep/braindrop/issues/114))
 
 ## v0.6.1
 

src/braindrop/app/screens/main.py

@@ -436,8 +436,17 @@ def action_escape_command(self) -> None:
     def action_details_command(self) -> None:
         """Toggle the details of the raindrop details view."""
         self.toggle_class("details-hidden")
+        if (
+            hidden := self.has_class("details-hidden")
+            and self.focused is not None
+            and self.query_one(RaindropDetails) in (self.focused, self.focused.parent)
+        ):
+            # Focus was on the details, or within, so let's ensure it heads
+            # back to the list of raindrops as that feels like the most
+            # logical landing point.
+            self.set_focus(self.query_one(RaindropsView))
         with update_configuration() as config:
-            config.details_visible = not self.has_class("details-hidden")
+            config.details_visible = not hidden
 
     @on(CompactMode)
     def action_compact_mode_command(self) -> None: