Add open download folder menu item to Episodes menu.

share/gpodder/ui/gtk/menus.ui

@@ -140,6 +140,12 @@
           <attribute name="label" translatable="yes">Change delete lock</attribute>
         </item>
       </section>
+      <section>
+        <item>
+          <attribute name="action">win.openEpisodeDownloadFolder</attribute>
+          <attribute name="label" translatable="yes">Open download folder</attribute>
+        </item>
+      </section>
       <section>
         <item>
           <attribute name="action">win.findEpisode</attribute>

src/gpodder/gtkui/main.py

@@ -316,6 +316,7 @@ class gPodder(BuilderWidget, dbus.service.Object):
             ('delete', self.on_btnDownloadedDelete_clicked),
             ('toggleEpisodeNew', self.on_item_toggle_played_activate),
             ('toggleEpisodeLock', self.on_item_toggle_lock_activate),
+            ('openEpisodeDownloadFolder', self.on_open_episode_download_folder),
             ('toggleShownotes', self.on_shownotes_selected_episodes),
             ('sync', self.on_sync_to_device_activate),
             ('findPodcast', self.on_find_podcast_activate),
@@ -338,6 +339,7 @@ class gPodder(BuilderWidget, dbus.service.Object):
         self.delete_action = g.lookup_action('delete')
         self.toggle_episode_new_action = g.lookup_action('toggleEpisodeNew')
         self.toggle_episode_lock_action = g.lookup_action('toggleEpisodeLock')
+        self.open_episode_download_folder_action = g.lookup_action('openEpisodeDownloadFolder')
 
         action = Gio.SimpleAction.new_stateful(
             'showToolbar', None, GLib.Variant.new_boolean(self.config.show_toolbar))
@@ -1739,7 +1741,7 @@ class gPodder(BuilderWidget, dbus.service.Object):
         assert self.active_channel is not None
         util.gui_open(self.active_channel.save_dir, gui=self)
 
-    def on_open_episode_download_folder(self, item):
+    def on_open_episode_download_folder(self, unused1=None, unused2=None):
         episodes = self.get_selected_episodes()
         assert len(episodes) == 1
         util.gui_open(episodes[0].parent.save_dir, gui=self)
@@ -2087,6 +2089,8 @@ class gPodder(BuilderWidget, dbus.service.Object):
 
     def set_episode_actions(self, open_instead_of_play=False, can_play=False, can_download=False, can_pause=False, can_cancel=False,
                             can_delete=False, can_lock=False, is_episode_selected=False):
+        episodes = self.get_selected_episodes() if is_episode_selected else []
+
         # play icon and label
         if open_instead_of_play or not is_episode_selected:
             self.toolPlay.set_icon_name('document-open')
@@ -2094,7 +2098,6 @@ class gPodder(BuilderWidget, dbus.service.Object):
         else:
             self.toolPlay.set_icon_name('media-playback-start')
 
-            episodes = self.get_selected_episodes()
             downloaded = all(e.was_downloaded(and_exists=True) for e in episodes)
             downloading = any(e.downloading for e in episodes)
 
@@ -2120,6 +2123,7 @@ class gPodder(BuilderWidget, dbus.service.Object):
         self.delete_action.set_enabled(can_delete)
         self.toggle_episode_new_action.set_enabled(is_episode_selected)
         self.toggle_episode_lock_action.set_enabled(can_lock)
+        self.open_episode_download_folder_action.set_enabled(len(episodes) == 1)
 
     def set_title(self, new_title):
         self.default_title = new_title