Refactor gtk available_themes property

yin_yang/plugins/_plugin.py

@@ -4,7 +4,7 @@
 from abc import ABC, abstractmethod
 from configparser import ConfigParser
 from pathlib import Path
-from typing import Optional
+from typing import Optional, List
 
 from PySide6.QtDBus import QDBusConnection, QDBusMessage
 from PySide6.QtGui import QColor, QRgba64
@@ -365,3 +365,20 @@ def flatpak_user(app_id: str) -> Path:
 
 def snap_path(app: str) -> Path:
     return Path(f'/var/lib/snapd/snap/{app}/current')
+
+def themes_from_theme_directories(type: str) -> List[Path]:
+    theme_directories = [
+        Path('/usr/share/themes'),
+        Path('/usr/local/share/themes'),
+        Path.home() / '.themes',
+        Path.home() / '.local/share/themes',
+    ]
+
+    themes = []
+    for directory in theme_directories:
+        if not directory.is_dir():
+            continue
+
+        themes.extend(d.name for d in directory.iterdir() if d.is_dir() and (d / type).is_dir())
+
+    return themes

yin_yang/plugins/gtk.py

@@ -5,16 +5,13 @@
 
 from PySide6.QtDBus import QDBusMessage
 
-from ._plugin import PluginDesktopDependent, PluginCommandline, DBusPlugin
+from ._plugin import PluginDesktopDependent, PluginCommandline, DBusPlugin, themes_from_theme_directories
 from .system import test_gnome_availability
 from ..meta import Desktop
 
 logger = logging.getLogger(__name__)
 
 
-theme_directories = ['/usr/share/themes', f'{Path.home()}/.themes']
-
-
 class Gtk(PluginDesktopDependent):
     name = 'GTK'
 
@@ -40,15 +37,7 @@ def __init__(self, desktop: Desktop):
 
     @property
     def available_themes(self) -> dict:
-        themes = []
-
-        for directory in theme_directories:
-            if not path.isdir(directory):
-                continue
-
-            with scandir(directory) as entries:
-                themes.extend(d.name for d in entries if d.is_dir() and path.isdir(d.path + '/gtk-3.0'))
-
+        themes = themes_from_theme_directories('gtk-3.0')
         return {t: t for t in themes}