Add a movie_menu() theme callback, and have the default theme call it

in the sidebar on movie page types.

modules/gallery/libraries/Theme_View.php

@@ -111,6 +111,12 @@ class Theme_View_Core extends Gallery_View {
     return $menu->compact();
   }
 
+  public function movie_menu() {
+    $menu = Menu::factory("root");
+    module::event("movie_menu", $menu, $this);
+    return $menu->compact();
+  }
+
   public function context_menu($item, $thumbnail_css_selector) {
     $menu = Menu::factory("root")
       ->append(Menu::factory("submenu")

themes/default/views/sidebar.html.php

@@ -6,6 +6,8 @@
       <?= $theme->album_menu() ?>
     <? elseif ($page_type == "photo") : ?>
       <?= $theme->photo_menu() ?>
+    <? elseif ($page_type == "movie") : ?>
+      <?= $theme->movie_menu() ?>
     <? elseif ($page_type == "tag") : ?>
       <?= $theme->tag_menu() ?>
     <? endif ?>