static void
photos_properties_dialog_constructed (GObject *object)
{
  PhotosPropertiesDialog *self = PHOTOS_PROPERTIES_DIALOG (object);
  GApplication *app;
  g_autoptr (GDateTime) date_modified = NULL;
  GtkStyleContext *context;
  GtkWidget *author_w = NULL;
  GtkWidget *content_area;
  GtkWidget *date_created_w = NULL;
  GtkWidget *date_modified_data;
  GtkWidget *date_modified_w;
  GtkWidget *dimensions_w = NULL;
  GtkWidget *exposure_time_w = NULL;
  GtkWidget *flash_w = NULL;
  GtkWidget *fnumber_w = NULL;
  GtkWidget *focal_length_w = NULL;
  GtkWidget *iso_speed_w = NULL;
  GtkWidget *item_type;
  GtkWidget *item_type_data;
  GtkWidget *modified_w = NULL;
  GtkWidget *source;
  GtkWidget *source_data;
  GtkWidget *title;
  GQuark equipment;
  GQuark flash;
  PhotosBaseItem *item;
  PhotosSearchContextState *state;
  const gchar *author;
  const gchar *location;
  const gchar *name;
  const gchar *type_description;
  g_autofree gchar *date_created_str = NULL;
  g_autofree gchar *date_modified_str = NULL;
  gdouble exposure_time;
  gdouble fnumber;
  gdouble focal_length;
  gdouble iso_speed;
  gint64 ctime;
  gint64 mtime;
  glong height;
  glong width;

  G_OBJECT_CLASS (photos_properties_dialog_parent_class)->constructed (object);

  app = g_application_get_default ();
  state = photos_search_context_get_state (PHOTOS_SEARCH_CONTEXT (app));

  self->item_mngr = g_object_ref (state->item_mngr);

  {
    g_autoptr (GError) error = NULL;

    self->queue = photos_tracker_queue_dup_singleton (NULL, &error);
    if (G_UNLIKELY (error != NULL))
      g_warning ("Unable to create PhotosTrackerQueue: %s", error->message);
  }

  item = PHOTOS_BASE_ITEM (photos_base_manager_get_object_by_id (self->item_mngr, self->urn));

  mtime = photos_base_item_get_mtime (item);
  date_modified = g_date_time_new_from_unix_local (mtime);
  date_modified_str = g_date_time_format (date_modified, "%c");

  ctime = photos_base_item_get_date_created (item);
  if (ctime >= 0)
    {
      g_autoptr (GDateTime) date_created = NULL;

      date_created = g_date_time_new_from_unix_local (ctime);
      date_created_str = g_date_time_format (date_created, "%c");
    }

  self->grid = gtk_grid_new ();
  gtk_widget_set_halign (self->grid, GTK_ALIGN_CENTER);
  gtk_widget_set_margin_start (self->grid, 24);
  gtk_widget_set_margin_end (self->grid, 24);
  gtk_widget_set_margin_bottom (self->grid, 12);
  gtk_widget_set_margin_top (self->grid, 12);
  gtk_orientable_set_orientation (GTK_ORIENTABLE (self->grid), GTK_ORIENTATION_VERTICAL);
  gtk_grid_set_column_homogeneous (GTK_GRID (self->grid), TRUE);
  gtk_grid_set_column_spacing (GTK_GRID (self->grid), 24);
  gtk_grid_set_row_homogeneous (GTK_GRID (self->grid), TRUE);
  gtk_grid_set_row_spacing (GTK_GRID (self->grid), 6);

  content_area = gtk_dialog_get_content_area (GTK_DIALOG (self));
  gtk_box_pack_start (GTK_BOX (content_area), self->grid, TRUE, TRUE, 2);

  /* Translators: this is the label next to the photo title in the
   * properties dialog
   */
  title = gtk_label_new (C_("Document Title", "Title"));
  gtk_widget_set_halign (title, GTK_ALIGN_END);
  context = gtk_widget_get_style_context (title);
  gtk_style_context_add_class (context, "dim-label");
  gtk_container_add (GTK_CONTAINER (self->grid), title);

  author = photos_base_item_get_author (item);
  if (author != NULL && author[0] != '\0')
    {
      /* Translators: this is the label next to the photo author in
       * the properties dialog
       */
      author_w = gtk_label_new (C_("Document Author", "Author"));
      gtk_widget_set_halign (author_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (author_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), author_w);
    }

  source = gtk_label_new (_("Source"));
  gtk_widget_set_halign (source, GTK_ALIGN_END);
  context = gtk_widget_get_style_context (source);
  gtk_style_context_add_class (context, "dim-label");
  gtk_container_add (GTK_CONTAINER (self->grid), source);

  date_modified_w = gtk_label_new (_("Date Modified"));
  gtk_widget_set_halign (date_modified_w, GTK_ALIGN_END);
  context = gtk_widget_get_style_context (date_modified_w);
  gtk_style_context_add_class (context, "dim-label");
  gtk_container_add (GTK_CONTAINER (self->grid), date_modified_w);

  if (date_created_str != NULL)
    {
      date_created_w = gtk_label_new (_("Date Created"));
      gtk_widget_set_halign (date_created_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (date_created_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), date_created_w);
    }

  /* Translators: this is the label next to the photo type in the
   * properties dialog
   */
  item_type = gtk_label_new (C_("Document Type", "Type"));
  gtk_widget_set_halign (item_type, GTK_ALIGN_END);
  context = gtk_widget_get_style_context (item_type);
  gtk_style_context_add_class (context, "dim-label");
  gtk_container_add (GTK_CONTAINER (self->grid), item_type);

  height = (glong) photos_base_item_get_height (item);
  width = (glong) photos_base_item_get_width (item);
  if (height > 0 && width > 0)
    {
      dimensions_w = gtk_label_new (_("Dimensions"));
      gtk_widget_set_halign (dimensions_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (dimensions_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), dimensions_w);
    }

  location = photos_base_item_get_location (item);
  if (location != NULL && location[0] != '\0' && G_LIKELY (self->queue != NULL))
    {
      g_autoptr (PhotosQuery) query = NULL;

      self->location_w = gtk_label_new (_("Location"));
      gtk_widget_set_halign (self->location_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (self->location_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), self->location_w);

      query = photos_query_builder_location_query (state, location);
      photos_tracker_queue_select (self->queue,
                                   query,
                                   NULL,
                                   photos_properties_dialog_location_query_executed,
                                   g_object_ref (self),
                                   g_object_unref);
    }

  equipment = photos_base_item_get_equipment (item);
  if (equipment != 0)
    {
      self->camera_w = gtk_label_new (_("Camera"));
      gtk_widget_set_halign (self->camera_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (self->camera_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), self->camera_w);
    }

  exposure_time = photos_base_item_get_exposure_time (item);
  if (exposure_time > 0.0)
    {
      exposure_time_w = gtk_label_new (_("Exposure"));
      gtk_widget_set_halign (exposure_time_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (exposure_time_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), exposure_time_w);
    }

  fnumber = photos_base_item_get_fnumber (item);
  if (fnumber > 0.0)
    {
      fnumber_w = gtk_label_new (_("Aperture"));
      gtk_widget_set_halign (fnumber_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (fnumber_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), fnumber_w);
    }

  focal_length = photos_base_item_get_focal_length (item);
  if (focal_length > 0.0)
    {
      focal_length_w = gtk_label_new (_("Focal Length"));
      gtk_widget_set_halign (focal_length_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (focal_length_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), focal_length_w);
    }

  iso_speed = photos_base_item_get_iso_speed (item);
  if (iso_speed > 0.0)
    {
      iso_speed_w = gtk_label_new (_("ISO Speed"));
      gtk_widget_set_halign (iso_speed_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (iso_speed_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), iso_speed_w);
    }

  flash = photos_base_item_get_flash (item);
  if (flash != 0)
    {
      flash_w = gtk_label_new (_("Flash"));
      gtk_widget_set_halign (flash_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (flash_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), flash_w);
    }

  if (!photos_base_item_is_collection (item))
    {
      modified_w = gtk_label_new (_("Modifications"));
      gtk_widget_set_halign (modified_w, GTK_ALIGN_END);
      gtk_widget_set_valign (modified_w, GTK_ALIGN_BASELINE);
      gtk_widget_set_vexpand (modified_w, TRUE);
      context = gtk_widget_get_style_context (modified_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (self->grid), modified_w);
    }

  name = photos_base_item_get_name (item);

  if (PHOTOS_IS_LOCAL_ITEM (item))
    {
      self->title_entry = gtk_entry_new ();
      gtk_widget_set_halign (self->title_entry, GTK_ALIGN_START);
      gtk_widget_set_hexpand (self->title_entry, TRUE);
      gtk_entry_set_activates_default (GTK_ENTRY (self->title_entry), TRUE);
      gtk_entry_set_text (GTK_ENTRY (self->title_entry), name);
      gtk_entry_set_width_chars (GTK_ENTRY (self->title_entry), 40);
      gtk_editable_set_editable (GTK_EDITABLE (self->title_entry), TRUE);

      g_signal_connect (self->title_entry,
                        "changed",
                        G_CALLBACK (photos_properties_dialog_title_entry_changed),
                        self);
    }
  else
    {
      self->title_entry = gtk_label_new (name);
      gtk_widget_set_halign (self->title_entry, GTK_ALIGN_START);
      gtk_label_set_ellipsize (GTK_LABEL (self->title_entry), PANGO_ELLIPSIZE_END);
      gtk_label_set_max_width_chars (GTK_LABEL (self->title_entry), 40);
    }

  gtk_grid_attach_next_to (GTK_GRID (self->grid), self->title_entry, title, GTK_POS_RIGHT, 2, 1);

  if (author_w != NULL)
    {
      GtkWidget *author_data;

      author_data = gtk_label_new (author);
      gtk_widget_set_halign (author_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (self->grid), author_data, author_w, GTK_POS_RIGHT, 2, 1);
    }

  source_data = photos_base_item_get_source_widget (item);
  gtk_grid_attach_next_to (GTK_GRID (self->grid), source_data, source, GTK_POS_RIGHT, 2, 1);

  date_modified_data = gtk_label_new (date_modified_str);
  gtk_widget_set_halign (date_modified_data, GTK_ALIGN_START);
  gtk_grid_attach_next_to (GTK_GRID (self->grid), date_modified_data, date_modified_w, GTK_POS_RIGHT, 2, 1);

  if (date_created_w != NULL)
    {
      GtkWidget *date_created_data;

      date_created_data = gtk_label_new (date_created_str);
      gtk_widget_set_halign (date_created_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (self->grid), date_created_data, date_created_w, GTK_POS_RIGHT, 2, 1);
    }

  type_description = photos_base_item_get_type_description (item);
  item_type_data = gtk_label_new (type_description);
  gtk_widget_set_halign (item_type_data, GTK_ALIGN_START);
  gtk_grid_attach_next_to (GTK_GRID (self->grid), item_type_data, item_type, GTK_POS_RIGHT, 2, 1);

  if (dimensions_w != NULL)
    {
      GtkWidget *dims_data;
      g_autofree gchar *dims_str = NULL;
      gulong n = (gulong) height;

      dims_str = g_strdup_printf (ngettext ("%ld × %ld pixel", "%ld × %ld pixels", n), width, height);
      dims_data = gtk_label_new (dims_str);
      gtk_widget_set_halign (dims_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (self->grid), dims_data, dimensions_w, GTK_POS_RIGHT, 2, 1);
    }

  if (self->camera_w != NULL)
    {
      photos_camera_cache_get_camera_async (self->camera_cache,
                                            equipment,
                                            self->cancellable,
                                            photos_properties_dialog_get_camera,
                                            self);
    }

  if (exposure_time_w != NULL)
    {
      GtkWidget *exposure_time_data;
      g_autofree gchar *exposure_time_str = NULL;

      exposure_time_str = g_strdup_printf ("%.3lf sec", exposure_time);
      exposure_time_data = gtk_label_new (exposure_time_str);
      gtk_widget_set_halign (exposure_time_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (self->grid), exposure_time_data, exposure_time_w, GTK_POS_RIGHT, 2, 1);
    }

  if (fnumber_w != NULL)
    {
      GtkWidget *fnumber_data;
      g_autofree gchar *fnumber_str = NULL;

      fnumber_str = g_strdup_printf ("f/%.1lf", fnumber);
      fnumber_data = gtk_label_new (fnumber_str);
      gtk_widget_set_halign (fnumber_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (self->grid), fnumber_data, fnumber_w, GTK_POS_RIGHT, 2, 1);
    }

  if (focal_length_w != NULL)
    {
      GtkWidget *focal_length_data;
      g_autofree gchar *focal_length_str = NULL;

      focal_length_str = g_strdup_printf ("%.0lf mm", focal_length);
      focal_length_data = gtk_label_new (focal_length_str);
      gtk_widget_set_halign (focal_length_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (self->grid), focal_length_data, focal_length_w, GTK_POS_RIGHT, 2, 1);
    }

  if (iso_speed_w != NULL)
    {
      GtkWidget *iso_speed_data;
      g_autofree gchar *iso_speed_str = NULL;

      iso_speed_str = g_strdup_printf ("%.0lf", iso_speed);
      iso_speed_data = gtk_label_new (iso_speed_str);
      gtk_widget_set_halign (iso_speed_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (self->grid), iso_speed_data, iso_speed_w, GTK_POS_RIGHT, 2, 1);
    }

  if (flash_w != NULL)
    {
      GtkWidget *flash_data;
      g_autofree gchar *flash_str = NULL;

      if (flash == PHOTOS_FLASH_OFF)
        flash_str = g_strdup (_("Off, did not fire"));
      else if (flash == PHOTOS_FLASH_ON)
        flash_str = g_strdup (_("On, fired"));
      else
        {
          const gchar *str;

          str = g_quark_to_string (flash);
          g_warning ("Unknown value for nmm:flash: %s", str);
        }

      flash_data = gtk_label_new (flash_str);
      gtk_widget_set_halign (flash_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (self->grid), flash_data, flash_w, GTK_POS_RIGHT, 2, 1);
    }

  if (modified_w != NULL)
    {
      GtkWidget *modified_grid;

      photos_base_item_pipeline_is_edited_async (item,
                                                 self->cancellable,
                                                 photos_properties_dialog_pipeline_is_edited,
                                                 self);

      modified_grid = gtk_grid_new ();
      gtk_widget_set_hexpand (modified_grid, TRUE);
      gtk_orientable_set_orientation (GTK_ORIENTABLE (modified_grid), GTK_ORIENTATION_HORIZONTAL);

      self->modified_data = gtk_label_new (NULL);
      gtk_widget_set_halign (self->modified_data, GTK_ALIGN_START);
      gtk_widget_set_hexpand (self->modified_data, TRUE);
      gtk_widget_set_no_show_all (self->modified_data, TRUE);
      gtk_widget_set_valign (self->modified_data, GTK_ALIGN_BASELINE);
      gtk_widget_set_vexpand (self->modified_data, TRUE);
      context = gtk_widget_get_style_context (self->modified_data);
      gtk_style_context_add_class (context, "photos-fade-out");
      gtk_container_add (GTK_CONTAINER (modified_grid), self->modified_data);

      self->revert_button = gtk_button_new_with_label (_("Discard all Edits"));
      gtk_widget_set_halign (self->revert_button, GTK_ALIGN_END);
      gtk_widget_set_hexpand (self->revert_button, TRUE);
      gtk_widget_set_no_show_all (self->revert_button, TRUE);
      context = gtk_widget_get_style_context (self->revert_button);
      gtk_style_context_add_class (context, "destructive-action");
      gtk_style_context_add_class (context, "photos-fade-out");
      gtk_container_add (GTK_CONTAINER (modified_grid), self->revert_button);

      g_signal_connect_swapped (self->revert_button,
                                "clicked",
                                G_CALLBACK (photos_properties_dialog_revert_clicked),
                                self);

      gtk_grid_attach_next_to (GTK_GRID (self->grid), modified_grid, modified_w, GTK_POS_RIGHT, 2, 1);
    }

}
static void
photos_properties_dialog_constructed (GObject *object)
{
  PhotosPropertiesDialog *self = PHOTOS_PROPERTIES_DIALOG (object);
  PhotosPropertiesDialogPrivate *priv = self->priv;
  GDateTime *date_modified;
  GtkStyleContext *context;
  GtkWidget *author_w = NULL;
  GtkWidget *content_area;
  GtkWidget *date_created_w = NULL;
  GtkWidget *date_modified_data;
  GtkWidget *date_modified_w;
  GtkWidget *exposure_time_w = NULL;
  GtkWidget *flash_w = NULL;
  GtkWidget *fnumber_w = NULL;
  GtkWidget *focal_length_w = NULL;
  GtkWidget *height_w = NULL;
  GtkWidget *iso_speed_w = NULL;
  GtkWidget *item_type;
  GtkWidget *item_type_data;
  GtkWidget *source;
  GtkWidget *source_data;
  GtkWidget *title;
  GtkWidget *width_w = NULL;
  GQuark equipment;
  GQuark flash;
  PhotosBaseItem *item;
  const gchar *author;
  const gchar *name;
  const gchar *type_description;
  gchar *date_created_str = NULL;
  gchar *date_modified_str;
  gdouble exposure_time;
  gdouble fnumber;
  gdouble focal_length;
  gdouble iso_speed;
  gint64 ctime;
  gint64 height;
  gint64 mtime;
  gint64 width;

  G_OBJECT_CLASS (photos_properties_dialog_parent_class)->constructed (object);

  item = PHOTOS_BASE_ITEM (photos_base_manager_get_object_by_id (priv->item_mngr, priv->urn));

  mtime = photos_base_item_get_mtime (item);
  date_modified = g_date_time_new_from_unix_local (mtime);
  date_modified_str = g_date_time_format (date_modified, "%c");
  g_date_time_unref (date_modified);

  ctime = photos_base_item_get_date_created (item);
  if (ctime != -1)
    {
      GDateTime *date_created;

      date_created = g_date_time_new_from_unix_local (ctime);
      date_created_str = g_date_time_format (date_created, "%c");
      g_date_time_unref (date_created);
    }

  priv->grid = gtk_grid_new ();
  gtk_widget_set_halign (priv->grid, GTK_ALIGN_CENTER);
  gtk_widget_set_margin_start (priv->grid, 24);
  gtk_widget_set_margin_end (priv->grid, 24);
  gtk_widget_set_margin_bottom (priv->grid, 12);
  gtk_widget_set_margin_top (priv->grid, 12);
  gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->grid), GTK_ORIENTATION_VERTICAL);
  gtk_grid_set_column_homogeneous (GTK_GRID (priv->grid), TRUE);
  gtk_grid_set_column_spacing (GTK_GRID (priv->grid), 24);
  gtk_grid_set_row_homogeneous (GTK_GRID (priv->grid), TRUE);
  gtk_grid_set_row_spacing (GTK_GRID (priv->grid), 6);

  content_area = gtk_dialog_get_content_area (GTK_DIALOG (self));
  gtk_box_pack_start (GTK_BOX (content_area), priv->grid, TRUE, TRUE, 2);

  /* Translators: this is the label next to the photo title in the
   * properties dialog
   */
  title = gtk_label_new (C_("Document Title", "Title"));
  gtk_widget_set_halign (title, GTK_ALIGN_END);
  context = gtk_widget_get_style_context (title);
  gtk_style_context_add_class (context, "dim-label");
  gtk_container_add (GTK_CONTAINER (priv->grid), title);

  author = photos_base_item_get_author (item);
  if (author != NULL && author[0] != '\0')
    {
      /* Translators: this is the label next to the photo author in
       * the properties dialog
       */
      author_w = gtk_label_new (C_("Document Author", "Author"));
      gtk_widget_set_halign (author_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (author_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), author_w);
    }

  source = gtk_label_new (_("Source"));
  gtk_widget_set_halign (source, GTK_ALIGN_END);
  context = gtk_widget_get_style_context (source);
  gtk_style_context_add_class (context, "dim-label");
  gtk_container_add (GTK_CONTAINER (priv->grid), source);

  date_modified_w = gtk_label_new (_("Date Modified"));
  gtk_widget_set_halign (date_modified_w, GTK_ALIGN_END);
  context = gtk_widget_get_style_context (date_modified_w);
  gtk_style_context_add_class (context, "dim-label");
  gtk_container_add (GTK_CONTAINER (priv->grid), date_modified_w);

  if (date_created_str != NULL)
    {
      date_created_w = gtk_label_new (_("Date Created"));
      gtk_widget_set_halign (date_created_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (date_created_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), date_created_w);
    }

  /* Translators: this is the label next to the photo type in the
   * properties dialog
   */
  item_type = gtk_label_new (C_("Document Type", "Type"));
  gtk_widget_set_halign (item_type, GTK_ALIGN_END);
  context = gtk_widget_get_style_context (item_type);
  gtk_style_context_add_class (context, "dim-label");
  gtk_container_add (GTK_CONTAINER (priv->grid), item_type);

  width = photos_base_item_get_width (item);
  if (width > 0)
    {
      width_w = gtk_label_new (_("Width"));
      gtk_widget_set_halign (width_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (width_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), width_w);
    }

  height = photos_base_item_get_height (item);
  if (height > 0)
    {
      height_w = gtk_label_new (_("Height"));
      gtk_widget_set_halign (height_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (height_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), height_w);
    }

  equipment = photos_base_item_get_equipment (item);
  photos_camera_cache_get_camera_async (priv->camera_cache,
                                        equipment,
                                        priv->cancellable,
                                        photos_properties_dialog_get_camera,
                                        self);
  if (equipment != 0)
    {
      priv->camera_w = gtk_label_new (_("Camera"));
      gtk_widget_set_halign (priv->camera_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (priv->camera_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), priv->camera_w);
    }

  exposure_time = photos_base_item_get_exposure_time (item);
  if (exposure_time > 0.0)
    {
      exposure_time_w = gtk_label_new (_("Exposure"));
      gtk_widget_set_halign (exposure_time_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (exposure_time_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), exposure_time_w);
    }

  fnumber = photos_base_item_get_fnumber (item);
  if (fnumber > 0.0)
    {
      fnumber_w = gtk_label_new (_("Aperture"));
      gtk_widget_set_halign (fnumber_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (fnumber_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), fnumber_w);
    }

  focal_length = photos_base_item_get_focal_length (item);
  if (focal_length > 0.0)
    {
      focal_length_w = gtk_label_new (_("Focal Length"));
      gtk_widget_set_halign (focal_length_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (focal_length_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), focal_length_w);
    }

  iso_speed = photos_base_item_get_iso_speed (item);
  if (iso_speed > 0.0)
    {
      iso_speed_w = gtk_label_new (_("ISO Speed"));
      gtk_widget_set_halign (iso_speed_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (iso_speed_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), iso_speed_w);
    }

  flash = photos_base_item_get_flash (item);
  if (flash != 0)
    {
      flash_w = gtk_label_new (_("Flash"));
      gtk_widget_set_halign (flash_w, GTK_ALIGN_END);
      context = gtk_widget_get_style_context (flash_w);
      gtk_style_context_add_class (context, "dim-label");
      gtk_container_add (GTK_CONTAINER (priv->grid), flash_w);
    }

  name = photos_base_item_get_name (item);

  if (PHOTOS_IS_LOCAL_ITEM (item))
    {
      priv->title_entry = gtk_entry_new ();
      gtk_widget_set_halign (priv->title_entry, GTK_ALIGN_START);
      gtk_widget_set_hexpand (priv->title_entry, TRUE);
      gtk_entry_set_activates_default (GTK_ENTRY (priv->title_entry), TRUE);
      gtk_entry_set_text (GTK_ENTRY (priv->title_entry), name);
      gtk_entry_set_width_chars (GTK_ENTRY (priv->title_entry), 40);
      gtk_editable_set_editable (GTK_EDITABLE (priv->title_entry), TRUE);

      g_signal_connect (priv->title_entry,
                        "changed",
                        G_CALLBACK (photos_properties_dialog_title_entry_changed),
                        self);
    }
  else
    {
      priv->title_entry = gtk_label_new (name);
      gtk_widget_set_halign (priv->title_entry, GTK_ALIGN_START);
    }

  gtk_grid_attach_next_to (GTK_GRID (priv->grid), priv->title_entry, title, GTK_POS_RIGHT, 2, 1);

  if (author_w != NULL)
    {
      GtkWidget *author_data;

      author_data = gtk_label_new (author);
      gtk_widget_set_halign (author_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (priv->grid), author_data, author_w, GTK_POS_RIGHT, 2, 1);
    }

  if (PHOTOS_IS_FACEBOOK_ITEM (item))
    {
      const gchar *source_name;

      source_name = photos_base_item_get_source_name (item);
      source_data = gtk_link_button_new_with_label ("https://www.facebook.com/", source_name);
      gtk_widget_set_halign (source_data, GTK_ALIGN_START);
    }
  else if (PHOTOS_IS_FLICKR_ITEM (item))
    {
      const gchar *source_name;

      source_name = photos_base_item_get_source_name (item);
      source_data = gtk_link_button_new_with_label ("https://www.flickr.com/", source_name);
      gtk_widget_set_halign (source_data, GTK_ALIGN_START);
    }
  else /* local item */
    {
      if (photos_base_item_is_collection (item))
        {
          const gchar *source_name;

          source_name = photos_base_item_get_source_name (item);
          source_data = gtk_label_new (source_name);
          gtk_widget_set_halign (source_data, GTK_ALIGN_START);
        }
      else
        {
          GFile *file;
          GFile *source_link;
          GtkWidget *label;
          const gchar *uri;
          gchar *source_path;
          gchar *source_uri;

          uri = photos_base_item_get_uri (item);
          file = g_file_new_for_uri (uri);
          source_link = g_file_get_parent (file);
          source_path = g_file_get_path (source_link);
          source_uri = g_file_get_uri (source_link);

          source_data = gtk_link_button_new_with_label (source_uri, source_path);
          gtk_widget_set_halign (source_data, GTK_ALIGN_START);

          label = gtk_bin_get_child (GTK_BIN (source_data));
          gtk_label_set_ellipsize (GTK_LABEL (label), PANGO_ELLIPSIZE_END);

          g_object_unref (source_link);
          g_object_unref (file);
        }
    }

  gtk_grid_attach_next_to (GTK_GRID (priv->grid), source_data, source, GTK_POS_RIGHT, 2, 1);

  date_modified_data = gtk_label_new (date_modified_str);
  gtk_widget_set_halign (date_modified_data, GTK_ALIGN_START);
  gtk_grid_attach_next_to (GTK_GRID (priv->grid), date_modified_data, date_modified_w, GTK_POS_RIGHT, 2, 1);

  if (date_created_w != NULL)
    {
      GtkWidget *date_created_data;

      date_created_data = gtk_label_new (date_created_str);
      gtk_widget_set_halign (date_created_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (priv->grid), date_created_data, date_created_w, GTK_POS_RIGHT, 2, 1);
    }

  type_description = photos_base_item_get_type_description (item);
  item_type_data = gtk_label_new (type_description);
  gtk_widget_set_halign (item_type_data, GTK_ALIGN_START);
  gtk_grid_attach_next_to (GTK_GRID (priv->grid), item_type_data, item_type, GTK_POS_RIGHT, 2, 1);

  if (width_w != NULL)
    {
      GtkWidget *width_data;
      gchar *width_str;

      width_str = g_strdup_printf ("%"G_GINT64_FORMAT" pixels", width);
      width_data = gtk_label_new (width_str);
      gtk_widget_set_halign (width_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (priv->grid), width_data, width_w, GTK_POS_RIGHT, 2, 1);
      g_free (width_str);
    }

  if (height_w != NULL)
    {
      GtkWidget *height_data;
      gchar *height_str;

      height_str = g_strdup_printf ("%"G_GINT64_FORMAT" pixels", height);
      height_data = gtk_label_new (height_str);
      gtk_widget_set_halign (height_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (priv->grid), height_data, height_w, GTK_POS_RIGHT, 2, 1);
      g_free (height_str);
    }

  if (exposure_time_w != NULL)
    {
      GtkWidget *exposure_time_data;
      gchar *exposure_time_str;

      exposure_time_str = g_strdup_printf ("%.3lf sec", exposure_time);
      exposure_time_data = gtk_label_new (exposure_time_str);
      gtk_widget_set_halign (exposure_time_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (priv->grid), exposure_time_data, exposure_time_w, GTK_POS_RIGHT, 2, 1);
      g_free (exposure_time_str);
    }

  if (fnumber_w != NULL)
    {
      GtkWidget *fnumber_data;
      gchar *fnumber_str;

      fnumber_str = g_strdup_printf ("f/%.1lf", fnumber);
      fnumber_data = gtk_label_new (fnumber_str);
      gtk_widget_set_halign (fnumber_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (priv->grid), fnumber_data, fnumber_w, GTK_POS_RIGHT, 2, 1);
      g_free (fnumber_str);
    }

  if (focal_length_w != NULL)
    {
      GtkWidget *focal_length_data;
      gchar *focal_length_str;

      focal_length_str = g_strdup_printf ("%.0lf mm", focal_length);
      focal_length_data = gtk_label_new (focal_length_str);
      gtk_widget_set_halign (focal_length_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (priv->grid), focal_length_data, focal_length_w, GTK_POS_RIGHT, 2, 1);
      g_free (focal_length_str);
    }

  if (iso_speed_w != NULL)
    {
      GtkWidget *iso_speed_data;
      gchar *iso_speed_str;

      iso_speed_str = g_strdup_printf ("%.0lf", iso_speed);
      iso_speed_data = gtk_label_new (iso_speed_str);
      gtk_widget_set_halign (iso_speed_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (priv->grid), iso_speed_data, iso_speed_w, GTK_POS_RIGHT, 2, 1);
      g_free (iso_speed_str);
    }

  if (flash_w != NULL)
    {
      GtkWidget *flash_data;
      gchar *flash_str;

      if (flash == PHOTOS_FLASH_OFF)
        flash_str = g_strdup (_("Off, did not fire"));
      else if (flash == PHOTOS_FLASH_ON)
        flash_str = g_strdup (_("On, fired"));
      else
        g_assert_not_reached ();

      flash_data = gtk_label_new (flash_str);
      gtk_widget_set_halign (flash_data, GTK_ALIGN_START);
      gtk_grid_attach_next_to (GTK_GRID (priv->grid), flash_data, flash_w, GTK_POS_RIGHT, 2, 1);
      g_free (flash_str);
    }

  g_free (date_created_str);
  g_free (date_modified_str);
}