Hide dotfiles, dotfolders, and backup files in file dialogs

src/textual_paint/enhanced_directory_tree.py

@@ -1,9 +1,14 @@
 import os
+from pathlib import Path
+from typing import Iterable
 from textual.widgets import DirectoryTree
 from textual.widgets._tree import TreeNode
 from textual.widgets._directory_tree import DirEntry
 
 class EnhancedDirectoryTree(DirectoryTree):
+    def filter_paths(self, paths: Iterable[Path]) -> Iterable[Path]:
+        return [path for path in paths if not (path.name.startswith(".") or path.name.endswith("~") or path.name.startswith("~"))]
+
     def expand_to_path(self, target_path: str) -> None:
         """Expand the directory tree to the target path, loading any directories as needed."""
         # TODO: os.path.normcase, and maybe os.path.samefile check

src/textual_paint/paint.py

@@ -2191,8 +2191,8 @@ class PaintApp(App[None]):
         # - It may be deleted in a file manager, which should be fine.
         # - This also used to happen when opening the backup file corresponding to the current file;
         #   it got discarded immediately after opening it, since it "belonged" to the now-closed file;
-        #   now that's prevented by checking if the backup file is being opened before discarding it.
-        #   (TODO: also hide backup files in the file dialogs)
+        #   now that's prevented by checking if the backup file is being opened before discarding it,
+        #   and also backup files are now hidden in the file dialogs (though you can type the name manually).
         # But if the file to be opened was deleted,
         # then it should show an error message (although it would anyways when trying to read the file).
         if self.file_path: