freedesktop (#1056): Make handler a method

This lets us use `self.config`. The previous version, which checked
`beets.config['auto']`, was looking in the wrong scope.

beetsplug/freedesktop.py

@@ -17,18 +17,13 @@
 
 from beets.plugins import BeetsPlugin
 from beets.ui import Subcommand
-
 from beets.ui import decargs
 
-from beets import config
-
-import os.path
+import os
 import logging
 
 log = logging.getLogger('beets.freedesktop')
 
-freedesktop_command = Subcommand("freedesktop", help="Create .directory files")
-
 
 def process_query(lib, opts, args):
     for album in lib.albums(decargs(args)):
@@ -53,10 +48,6 @@ def create_file(albumpath, artfile):
         file = open(outfilename, 'w')
         file.write(file_contents)
         file.close()
-    pass
-
-
-freedesktop_command.func = process_query
 
 
 class FreedesktopPlugin(BeetsPlugin):
@@ -65,14 +56,16 @@ class FreedesktopPlugin(BeetsPlugin):
         self.config.add({
             'auto': False
         })
+        self.register_listener('album_imported', self.imported)
 
     def commands(self):
+        freedesktop_command = Subcommand("freedesktop",
+                                         help="Create .directory files")
+        freedesktop_command.func = process_query
         return [freedesktop_command]
 
-
-@FreedesktopPlugin.listen('album_imported')
-def imported(lib, album):
-    automatic = config['auto'].get(bool)
-    if not automatic:
-        return
-    process_album(album)
+    def imported(self, lib, album):
+        automatic = self.config['auto'].get(bool)
+        if not automatic:
+            return
+        process_album(album)

docs/plugins/freedesktop.rst

@@ -1,9 +1,9 @@
 Freedesktop Plugin
 ==================
 
-The ``freedesktop`` plugin creates .directory files in your album folders. This 
-allows, when using a freedesktop.org compliant file manager, such as
-Dolphin or Nautilus, an album to have its cover art as the folder's thumbnail.
+The ``freedesktop`` plugin creates .directory files in your album folders.
+This lets Freedesktop.org compliant file managers such as Dolphin or Nautilus
+to use an album's cover art as the folder's thumbnail.
 
 To use the ``freedesktop`` plugin, enable it (see :doc:`/plugins/index`).
 
@@ -13,8 +13,8 @@ Configuration
 To configure the plugin, make a ``freedesktop:`` section in your configuration
 file. The only available option is:
 
-- ``auto``: Create .directory files automatically during import. 
-  Default: ``no``
+- ``auto``: Create .directory files automatically during import.
+  Default: ``no``.
 
 Creating .directory Files Manually
 ----------------------------------
@@ -22,4 +22,4 @@ Creating .directory Files Manually
 The ``freedesktop`` command provided by this plugin creates .directory files
 for albums that match a query (see :doc:`/reference/query`). For example, ``beet
 freedesktop man the animal cannon`` will create the .directory file for the
-folder containing the album Man the Animal Cannon.
+folder containing the album Man the Animal Cannon.