GtkFileChooser: add a sortable "Type" column

along with a new 'type-format' setting that allows
to choose the output format for the "Type" column.

The options implemented for this setting are:

'mime' : Output from g_content_type_get_mime_type().

'description' : Output from g_content_type_get_description().

'category' : It uses the corresponding generic icon
  of the mime type to group by categories (aka basic types).

  This produces a more compact output than previous options,
  and allows for type families to be grouped together, so eg.
  after sorting by "Type" column, jpeg and png images will
  be placed together, or the various types of archiver files
  will also be grouped together.

  This format was copied from and currently used by Nautilus
  list view, so we also improve consistency with Nautilus.
  Bugzilla entry for Nautilus implementation is:
  https://bugzilla.gnome.org/show_bug.cgi?id=683722

  The list of type families or categories can be checked on:
  https://developer.gnome.org/icon-naming-spec/#mimetypes

  This 'category' format is set as default.

Issue #362

4 files changed, 225 insertions, 2 deletions

diff --git a/gtk/gtkfilechooserprivate.h b/gtk/gtkfilechooserprivate.h
index c16fac3174..6379e0ab60 100644
--- a/gtk/gtkfilechooserprivate.h
+++ b/gtk/gtkfilechooserprivate.h
@@ -38,6 +38,7 @@ G_BEGIN_DECLS
 #define SETTINGS_KEY_LOCATION_MODE          "location-mode"
 #define SETTINGS_KEY_SHOW_HIDDEN            "show-hidden"
 #define SETTINGS_KEY_SHOW_SIZE_COLUMN       "show-size-column"
+#define SETTINGS_KEY_SHOW_TYPE_COLUMN       "show-type-column"
 #define SETTINGS_KEY_SORT_COLUMN            "sort-column"
 #define SETTINGS_KEY_SORT_ORDER             "sort-order"
 #define SETTINGS_KEY_WINDOW_SIZE            "window-size"
@@ -46,6 +47,7 @@ G_BEGIN_DECLS
 #define SETTINGS_KEY_SORT_DIRECTORIES_FIRST "sort-directories-first"
 #define SETTINGS_KEY_CLOCK_FORMAT           "clock-format"
 #define SETTINGS_KEY_DATE_FORMAT            "date-format"
+#define SETTINGS_KEY_TYPE_FORMAT            "type-format"
 
 #define GTK_FILE_CHOOSER_GET_IFACE(inst)  (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GTK_TYPE_FILE_CHOOSER, GtkFileChooserIface))
 
diff --git a/gtk/gtkfilechooserwidget.c b/gtk/gtkfilechooserwidget.c
index 9c40a24fce..c419e16d9c 100644
--- a/gtk/gtkfilechooserwidget.c
+++ b/gtk/gtkfilechooserwidget.c
@@ -221,6 +221,12 @@ struct _GtkFileChooserWidgetClass
   GtkWidgetClass parent_class;
 };
 
+typedef enum {
+  TYPE_FORMAT_MIME,
+  TYPE_FORMAT_DESCRIPTION,
+  TYPE_FORMAT_CATEGORY
+} TypeFormat;
+
 struct _GtkFileChooserWidgetPrivate {
   GtkFileChooserAction action;
 
@@ -247,6 +253,7 @@ struct _GtkFileChooserWidgetPrivate {
   GtkWidget *add_shortcut_item;
   GtkWidget *hidden_files_item;
   GtkWidget *size_column_item;
+  GtkWidget *type_column_item;
   GtkWidget *copy_file_location_item;
   GtkWidget *visit_file_item;
   GtkWidget *open_folder_item;
@@ -339,6 +346,8 @@ struct _GtkFileChooserWidgetPrivate {
   GtkCellRenderer *list_time_renderer;
   GtkTreeViewColumn *list_size_column;
   GtkCellRenderer *list_size_renderer;
+  GtkTreeViewColumn *list_type_column;
+  GtkCellRenderer *list_type_renderer;
   GtkTreeViewColumn *list_location_column;
   GtkCellRenderer *list_location_renderer;
 
@@ -357,6 +366,8 @@ struct _GtkFileChooserWidgetPrivate {
 
   ClockFormat clock_format;
 
+  TypeFormat type_format;
+
   /* Flags */
 
   guint local_only : 1;
@@ -371,6 +382,7 @@ struct _GtkFileChooserWidgetPrivate {
   guint list_sort_ascending : 1;
   guint shortcuts_current_folder_active : 1;
   guint show_size_column : 1;
+  guint show_type_column : 1;
   guint create_folders : 1;
   guint auto_selecting_first_row : 1;
   guint starting_search : 1;
@@ -406,9 +418,10 @@ static guint signals[LAST_SIGNAL] = { 0 };
                          "access::can-rename,access::can-delete,access::can-trash," \
                          "standard::target-uri"
 enum {
-  /* the first 3 must be these due to settings caching sort column */
+  /* the first 4 must be these due to settings caching sort column */
   MODEL_COL_NAME,
   MODEL_COL_SIZE,
+  MODEL_COL_TYPE,
   MODEL_COL_TIME,
   MODEL_COL_FILE,
   MODEL_COL_NAME_COLLATED,
@@ -428,6 +441,7 @@ enum {
         MODEL_COL_NUM_COLUMNS,                                  \
         G_TYPE_STRING,            /* MODEL_COL_NAME */          \
         G_TYPE_INT64,             /* MODEL_COL_SIZE */          \
+        G_TYPE_STRING,            /* MODEL_COL_TYPE */          \
         G_TYPE_LONG,              /* MODEL_COL_TIME */          \
         G_TYPE_FILE,              /* MODEL_COL_FILE */          \
         G_TYPE_STRING,            /* MODEL_COL_NAME_COLLATED */ \
@@ -1727,6 +1741,22 @@ change_show_size_state (GSimpleAction *action,
                                     priv->show_size_column);
 }
 
+/* Callback used when the "Show Type Column" menu item is toggled */
+static void
+change_show_type_state (GSimpleAction *action,
+                        GVariant      *state,
+                        gpointer       data)
+{
+  GtkFileChooserWidget *impl = data;
+  GtkFileChooserWidgetPrivate *priv = gtk_file_chooser_widget_get_instance_private (impl);
+
+  g_simple_action_set_state (action, state);
+  priv->show_type_column = g_variant_get_boolean (state);
+
+  gtk_tree_view_column_set_visible (priv->list_type_column,
+                                    priv->show_type_column);
+}
+
 static void
 change_sort_directories_first_state (GSimpleAction *action,
                                      GVariant      *state,
@@ -2093,6 +2123,7 @@ static GActionEntry entries[] = {
   { "trash", trash_file_cb, NULL, NULL, NULL },
   { "toggle-show-hidden", NULL, NULL, "false", change_show_hidden_state },
   { "toggle-show-size", NULL, NULL, "false", change_show_size_state },
+  { "toggle-show-type", NULL, NULL, "false", change_show_type_state },
   { "toggle-show-time", NULL, NULL, "false", change_show_time_state },
   { "toggle-sort-dirs-first", NULL, NULL, "false", change_sort_directories_first_state }
 };
@@ -2172,6 +2203,7 @@ file_list_build_popover (GtkFileChooserWidget *impl)
 
   priv->hidden_files_item = add_button (box, _("Show _Hidden Files"), "item.toggle-show-hidden");
   priv->size_column_item = add_button (box, _("Show _Size Column"), "item.toggle-show-size");
+  priv->type_column_item = add_button (box, _("Show T_ype Column"), "item.toggle-show-type");
   priv->show_time_item = add_button (box, _("Show _Time"), "item.toggle-show-time");
   priv->sort_directories_item = add_button (box, _("Sort _Folders before Files"), "item.toggle-sort-dirs-first");
 }
@@ -2207,6 +2239,9 @@ file_list_update_popover (GtkFileChooserWidget *impl)
   action = g_action_map_lookup_action (G_ACTION_MAP (priv->item_actions), "toggle-show-size");
   g_simple_action_set_state (G_SIMPLE_ACTION (action), g_variant_new_boolean (priv->show_size_column));
 
+  action = g_action_map_lookup_action (G_ACTION_MAP (priv->item_actions), "toggle-show-type");
+  g_simple_action_set_state (G_SIMPLE_ACTION (action), g_variant_new_boolean (priv->show_type_column));
+
   action = g_action_map_lookup_action (G_ACTION_MAP (priv->item_actions), "toggle-show-time");
   g_simple_action_set_state (G_SIMPLE_ACTION (action), g_variant_new_boolean (priv->show_time));
 
@@ -2345,6 +2380,7 @@ file_list_set_sort_column_ids (GtkFileChooserWidget *impl)
   gtk_tree_view_column_set_sort_column_id (priv->list_name_column, MODEL_COL_NAME);
   gtk_tree_view_column_set_sort_column_id (priv->list_time_column, MODEL_COL_TIME);
   gtk_tree_view_column_set_sort_column_id (priv->list_size_column, MODEL_COL_SIZE);
+  gtk_tree_view_column_set_sort_column_id (priv->list_type_column, MODEL_COL_TYPE);
   gtk_tree_view_column_set_sort_column_id (priv->list_location_column, MODEL_COL_LOCATION_TEXT);
 }
 
@@ -3657,8 +3693,10 @@ settings_load (GtkFileChooserWidget *impl)
   GtkFileChooserWidgetPrivate *priv = gtk_file_chooser_widget_get_instance_private (impl);
   gboolean show_hidden;
   gboolean show_size_column;
+  gboolean show_type_column;
   gboolean sort_directories_first;
   DateFormat date_format;
+  TypeFormat type_format;
   gint sort_column;
   GtkSortType sort_order;
   StartupMode startup_mode;
@@ -3669,17 +3707,21 @@ settings_load (GtkFileChooserWidget *impl)
 
   show_hidden = g_settings_get_boolean (settings, SETTINGS_KEY_SHOW_HIDDEN);
   show_size_column = g_settings_get_boolean (settings, SETTINGS_KEY_SHOW_SIZE_COLUMN);
+  show_type_column = g_settings_get_boolean (settings, SETTINGS_KEY_SHOW_TYPE_COLUMN);
   sort_column = g_settings_get_enum (settings, SETTINGS_KEY_SORT_COLUMN);
   sort_order = g_settings_get_enum (settings, SETTINGS_KEY_SORT_ORDER);
   sidebar_width = g_settings_get_int (settings, SETTINGS_KEY_SIDEBAR_WIDTH);
   startup_mode = g_settings_get_enum (settings, SETTINGS_KEY_STARTUP_MODE);
   sort_directories_first = g_settings_get_boolean (settings, SETTINGS_KEY_SORT_DIRECTORIES_FIRST);
   date_format = g_settings_get_enum (settings, SETTINGS_KEY_DATE_FORMAT);
+  type_format = g_settings_get_enum (settings, SETTINGS_KEY_TYPE_FORMAT);
 
   if (!priv->show_hidden_set)
     set_show_hidden (impl, show_hidden);
   priv->show_size_column = show_size_column;
   gtk_tree_view_column_set_visible (priv->list_size_column, show_size_column);
+  priv->show_type_column = show_type_column;
+  gtk_tree_view_column_set_visible (priv->list_type_column, show_type_column);
 
   priv->sort_column = sort_column;
   priv->sort_order = sort_order;
@@ -3687,6 +3729,7 @@ settings_load (GtkFileChooserWidget *impl)
   priv->sort_directories_first = sort_directories_first;
   priv->show_time = date_format == DATE_FORMAT_WITH_TIME;
   priv->clock_format = g_settings_get_enum (settings, "clock-format");
+  priv->type_format = type_format;
 
   /* We don't call set_sort_column() here as the models may not have been
    * created yet.  The individual functions that create and set the models will
@@ -3719,12 +3762,14 @@ settings_save (GtkFileChooserWidget *impl)
   g_settings_set_boolean (settings, SETTINGS_KEY_SHOW_HIDDEN,
                           gtk_file_chooser_get_show_hidden (GTK_FILE_CHOOSER (impl)));
   g_settings_set_boolean (settings, SETTINGS_KEY_SHOW_SIZE_COLUMN, priv->show_size_column);
+  g_settings_set_boolean (settings, SETTINGS_KEY_SHOW_TYPE_COLUMN, priv->show_type_column);
   g_settings_set_boolean (settings, SETTINGS_KEY_SORT_DIRECTORIES_FIRST, priv->sort_directories_first);
   g_settings_set_enum (settings, SETTINGS_KEY_SORT_COLUMN, priv->sort_column);
   g_settings_set_enum (settings, SETTINGS_KEY_SORT_ORDER, priv->sort_order);
   g_settings_set_int (settings, SETTINGS_KEY_SIDEBAR_WIDTH,
                       gtk_paned_get_position (GTK_PANED (priv->browse_widgets_hpaned)));
   g_settings_set_enum (settings, SETTINGS_KEY_DATE_FORMAT, priv->show_time ? DATE_FORMAT_WITH_TIME : DATE_FORMAT_REGULAR);
+  g_settings_set_enum (settings, SETTINGS_KEY_TYPE_FORMAT, priv->type_format);
 
   /* Now apply the settings */
   g_settings_apply (settings);
@@ -3977,6 +4022,20 @@ compare_size (GtkFileSystemModel   *model,
 }
 
 static gint
+compare_type (GtkFileSystemModel   *model,
+              GtkTreeIter          *a,
+              GtkTreeIter          *b,
+              GtkFileChooserWidget *impl)
+{
+  const char *key_a, *key_b;
+
+  key_a = g_value_get_string (_gtk_file_system_model_get_value (model, a, MODEL_COL_TYPE));
+  key_b = g_value_get_string (_gtk_file_system_model_get_value (model, b, MODEL_COL_TYPE));
+
+  return g_strcmp0 (key_a, key_b);
+}
+
+static gint
 compare_time (GtkFileSystemModel   *model,
               GtkTreeIter          *a,
               GtkTreeIter          *b,
@@ -4042,6 +4101,25 @@ size_sort_func (GtkTreeModel *model,
   return result;
 }
 
+/* Sort callback for the type column */
+static gint
+type_sort_func (GtkTreeModel *model,
+                GtkTreeIter  *a,
+                GtkTreeIter  *b,
+                gpointer      user_data)
+{
+  GtkFileSystemModel *fs_model = GTK_FILE_SYSTEM_MODEL (model);
+  GtkFileChooserWidget *impl = user_data;
+  gint result;
+
+  result = compare_directory (fs_model, a, b, impl);
+
+  if (result == 0)
+    result = compare_type (fs_model, a, b, impl);
+
+  return result;
+}
+
 /* Sort callback for the time column */
 static gint
 time_sort_func (GtkTreeModel *model,
@@ -4692,6 +4770,93 @@ file_system_model_got_thumbnail (GObject      *object,
   g_object_unref (queried);
 }
 
+/* Copied from src/nautilus_file.c:get_description() */
+struct {
+  const char *icon_name;
+  const char *display_name;
+} mime_type_map[] = {
+  { "application-x-executable", N_("Program") },
+  { "audio-x-generic", N_("Audio") },
+  { "font-x-generic", N_("Font") },
+  { "image-x-generic", N_("Image") },
+  { "package-x-generic", N_("Archive") },
+  { "text-html", N_("Markup") },
+  { "text-x-generic", N_("Text") },
+  { "text-x-generic-template", N_("Text") },
+  { "text-x-script", N_("Program") },
+  { "video-x-generic", N_("Video") },
+  { "x-office-address-book", N_("Contacts") },
+  { "x-office-calendar", N_("Calendar") },
+  { "x-office-document", N_("Document") },
+  { "x-office-presentation", N_("Presentation") },
+  { "x-office-spreadsheet", N_("Spreadsheet") },
+};
+
+static char *
+get_category_from_content_type (const char *content_type)
+{
+  char *icon_name;
+  char *basic_type = NULL;
+
+  icon_name = g_content_type_get_generic_icon_name (content_type);
+  if (icon_name != NULL)
+    {
+      int i;
+
+      for (i = 0; i < G_N_ELEMENTS (mime_type_map); i++)
+        {
+          if (strcmp (mime_type_map[i].icon_name, icon_name) == 0)
+            {
+              basic_type = g_strdup (gettext (mime_type_map[i].display_name));
+              break;
+            }
+        }
+
+      g_free (icon_name);
+    }
+
+  if (basic_type == NULL)
+    {
+      basic_type = g_content_type_get_description (content_type);
+      if (basic_type == NULL)
+        {
+          basic_type = g_strdup (_("Unknown"));
+        }
+    }
+
+  return basic_type;
+}
+
+static char *
+get_type_information (GtkFileChooserWidget *impl,
+                      GFileInfo            *info)
+{
+  const char *content_type;
+  char *mime_type;
+  char *description;
+
+  GtkFileChooserWidgetPrivate *priv = gtk_file_chooser_widget_get_instance_private (impl);
+  content_type = g_file_info_get_content_type (info);
+  switch (priv->type_format)
+    {
+    case TYPE_FORMAT_MIME:
+      mime_type = g_content_type_get_mime_type (content_type);
+      return mime_type ? mime_type : g_strdup (content_type);
+
+    case TYPE_FORMAT_DESCRIPTION:
+      description = g_content_type_get_description (content_type);
+      return description ? description : g_strdup (content_type);
+
+    case TYPE_FORMAT_CATEGORY:
+      return get_category_from_content_type (content_type);
+
+    default:
+      g_assert_not_reached ();
+    }
+
+  return g_strdup ("");
+}
+
 static gboolean
 file_system_model_set (GtkFileSystemModel *model,
                        GFile              *file,
@@ -4819,6 +4984,12 @@ file_system_model_set (GtkFileSystemModel *model,
       else
         g_value_take_string (value, g_format_size (g_file_info_get_size (info)));
       break;
+    case MODEL_COL_TYPE:
+      if (info == NULL || _gtk_file_info_consider_as_directory (info))
+        g_value_set_string (value, NULL);
+      else
+        g_value_take_string (value, get_type_information (impl, info));
+      break;
     case MODEL_COL_TIME:
     case MODEL_COL_DATE_TEXT:
     case MODEL_COL_TIME_TEXT:
@@ -4931,6 +5102,7 @@ set_list_model (GtkFileChooserWidget  *impl,
   profile_msg ("    set sort function", NULL);
   gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (priv->browse_files_model), MODEL_COL_NAME, name_sort_func, impl, NULL);
   gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (priv->browse_files_model), MODEL_COL_SIZE, size_sort_func, impl, NULL);
+  gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (priv->browse_files_model), MODEL_COL_TYPE, type_sort_func, impl, NULL);
   gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (priv->browse_files_model), MODEL_COL_TIME, time_sort_func, impl, NULL);
   gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (priv->browse_files_model), NULL, NULL, NULL);
   set_sort_column (impl);
@@ -7054,6 +7226,7 @@ search_setup_model (GtkFileChooserWidget *impl)
   gtk_tree_view_column_set_sort_column_id (priv->list_name_column, -1);
   gtk_tree_view_column_set_sort_column_id (priv->list_time_column, -1);
   gtk_tree_view_column_set_sort_column_id (priv->list_size_column, -1);
+  gtk_tree_view_column_set_sort_column_id (priv->list_type_column, -1);
   gtk_tree_view_column_set_sort_column_id (priv->list_location_column, -1);
 
   update_columns (impl, TRUE, _("Modified"));
@@ -7271,6 +7444,7 @@ recent_idle_cleanup (gpointer data)
   gtk_tree_view_column_set_sort_column_id (priv->list_name_column, -1);
   gtk_tree_view_column_set_sort_column_id (priv->list_time_column, -1);
   gtk_tree_view_column_set_sort_column_id (priv->list_size_column, -1);
+  gtk_tree_view_column_set_sort_column_id (priv->list_type_column, -1);
   gtk_tree_view_column_set_sort_column_id (priv->list_location_column, -1);
 
   update_columns (impl, TRUE, _("Accessed"));
@@ -7712,6 +7886,12 @@ update_cell_renderer_attributes (GtkFileChooserWidget *impl)
                                        "sensitive", MODEL_COL_IS_SENSITIVE,
                                        NULL);
 
+  gtk_tree_view_column_set_attributes (priv->list_type_column,
+                                       priv->list_type_renderer,
+                                       "text", MODEL_COL_TYPE,
+                                       "sensitive", MODEL_COL_IS_SENSITIVE,
+                                       NULL);
+
   gtk_tree_view_column_set_attributes (priv->list_time_column,
                                        priv->list_date_renderer,
                                        "text", MODEL_COL_DATE_TEXT,
@@ -8296,6 +8476,8 @@ gtk_file_chooser_widget_class_init (GtkFileChooserWidgetClass *class)
   gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserWidget, list_time_renderer);
   gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserWidget, list_size_column);
   gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserWidget, list_size_renderer);
+  gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserWidget, list_type_column);
+  gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserWidget, list_type_renderer);
   gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserWidget, list_location_column);
   gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserWidget, list_location_renderer);
   gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserWidget, new_folder_name_entry);
@@ -8446,6 +8628,8 @@ gtk_file_chooser_widget_init (GtkFileChooserWidget *impl)
   priv->select_multiple = FALSE;
   priv->show_hidden = FALSE;
   priv->show_size_column = TRUE;
+  priv->show_type_column = TRUE;
+  priv->type_format = TYPE_FORMAT_MIME;
   priv->load_state = LOAD_EMPTY;
   priv->reload_state = RELOAD_EMPTY;
   priv->pending_select_files = NULL;
diff --git a/gtk/org.gtk.gtk4.Settings.FileChooser.gschema.xml b/gtk/org.gtk.gtk4.Settings.FileChooser.gschema.xml
index 2db786b236..985b9dda80 100644
--- a/gtk/org.gtk.gtk4.Settings.FileChooser.gschema.xml
+++ b/gtk/org.gtk.gtk4.Settings.FileChooser.gschema.xml
@@ -25,7 +25,8 @@
   <enum id='org.gtk.gtk4.Settings.FileChooser.SortColumn'>
     <value nick='name' value='0'/>
     <value nick='size' value='1'/>
-    <value nick='modified' value='2'/>
+    <value nick='type' value='2'/>
+    <value nick='modified' value='3'/>
   </enum>
 
   <enum id='org.gtk.gtk4.Settings.FileChooser.SortOrder'>
@@ -48,6 +49,12 @@
     <value nick='with-time' value='1'/>
   </enum>
 
+  <enum id='org.gtk.gtk4.Settings.FileChooser.TypeFormat'>
+    <value nick='mime' value='0'/>
+    <value nick='description' value='1'/>
+    <value nick='category' value='2'/>
+  </enum>
+
   <schema id='org.gtk.gtk4.Settings.FileChooser' path='/org/gtk/gtk4/settings/file-chooser/'>
     <key name='last-folder-uri' type='s'>
       <default>""</default>
@@ -87,6 +94,13 @@
 	Controls whether the file chooser shows a column with file sizes.
       </description>
     </key>
+    <key name='show-type-column' type='b'>
+      <default>true</default>
+      <summary>Show file types</summary>
+      <description>
+	Controls whether the file chooser shows a column with file types.
+      </description>
+    </key>
     <key name='sort-column' enum='org.gtk.gtk4.Settings.FileChooser.SortColumn'>
       <default>'name'</default>
       <summary>Sort column</summary>
@@ -148,6 +162,17 @@
         The amount of detail to show in the Modified column.
       </description>
     </key>
+    <key name="type-format" enum="org.gtk.gtk4.Settings.FileChooser.TypeFormat">
+      <default>'category'</default>
+      <summary>Type format</summary>
+      <description>
+        Different ways to show the 'Type' column information.
+        Example outputs for a video mp4 file:
+        'mime' -> 'video/mp4'
+        'description' -> 'MPEG-4 video'
+        'category' -> 'Video'
+      </description>
+    </key>
   </schema>
 
 </schemalist>
diff --git a/gtk/ui/gtkfilechooserwidget.ui b/gtk/ui/gtkfilechooserwidget.ui
index 07c64ffd4f..623bd86aec 100644
--- a/gtk/ui/gtkfilechooserwidget.ui
+++ b/gtk/ui/gtkfilechooserwidget.ui
@@ -218,6 +218,18 @@
                                               </object>
                                             </child>
                                             <child>
+                                              <object class="GtkTreeViewColumn" id="list_type_column">
+                                                <property name="title" translatable="yes">Type</property>
+                                                <property name="resizable">1</property>
+                                                <child>
+                                                  <object class="GtkCellRendererText" id="list_type_renderer">
+                                                    <property name="xalign">0</property>
+                                                    <property name="xpad">6</property>
+                                                  </object>
+                                                </child>
+                                              </object>
+                                            </child>
+                                            <child>
                                               <object class="GtkTreeViewColumn" id="list_time_column">
                                                 <property name="title" translatable="yes">Modified</property>
                                                 <property name="sizing">fixed</property>