Fix double-acting arrow keys with dialog open

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Fixed errors when interacting with the command palette (opened by clicking the paint icon in the top left).
+- Fixed double-acting arrow keys. Before it was moving between buttons of a dialog while also moving the selection on the canvas.
 
 ## [0.4.0] - 2024-01-11
 

src/textual_paint/paint.py

@@ -2989,6 +2989,10 @@ Columns: {len(self.palette) // 2}
             # (NoMatches: No nodes match <DOMQuery query='ToolsBox'>)
             return
         
+        if self.focused is not None:
+            # Avoid double-acting arrow keys when dialogs are open.
+            return
+
         key = event.key
         shift = key.startswith("shift+")
         if shift: