introspection: This patch fixes nullable return values fixes for the following symbols in gtk

  gtk_accel_group_query
  gtk_accel_group_from_accel_closure
  gtk_accel_label_get_accel_widget
  gtk_accessible_get_widget
  gtk_actionable_get_action_name
  gtk_app_chooser_get_app_info
  gtk_app_chooser_button_get_heading
  gtk_app_chooser_dialog_get_heading
  gtk_application_get_window_by_id
  gtk_assistant_get_nth_page
  gtk_binding_set_find
  gtk_builder_get_object
  gtk_builder_lookup_callback_symbol
  gtk_builder_get_application
  gtk_button_get_image
  gtk_cell_area_get_focus_from_sibling
  gtk_cell_renderer_start_editing
  gtk_cell_view_get_model
  gtk_cell_view_get_displayed_row
  gtk_clipboard_get_owner
  gtk_container_get_focus_child
  gtk_container_get_focus_vadjustment
  gtk_container_get_focus_hadjustment
  gtk_dialog_get_widget_for_response
  gtk_drag_get_source_widget
  gtk_drag_dest_get_target_list
  gtk_drag_source_get_target_list
  gtk_entry_completion_get_model
  gtk_entry_completion_compute_prefix
  gtk_expander_get_label_widget
  gtk_file_chooser_get_filename
  gtk_file_chooser_get_current_folder
  gtk_file_chooser_get_uri
  gtk_file_chooser_get_current_folder_uri
  gtk_file_chooser_get_preview_widget
  gtk_file_chooser_get_preview_file
  gtk_file_chooser_get_preview_filename
  gtk_file_chooser_get_preview_uri
  gtk_file_chooser_get_extra_widget
  gtk_file_chooser_get_filter
  gtk_file_chooser_native_get_accept_label
  gtk_file_chooser_native_get_cancel_label
  gtk_file_filter_get_name
  gtk_font_chooser_get_font_family
  gtk_font_chooser_get_font_face
  gtk_font_chooser_get_font
  gtk_font_chooser_get_font_desc
  gtk_font_chooser_get_font_map
  gtk_frame_get_label
  gtk_gesture_get_device
  gtk_gesture_get_window
  gtk_gl_area_get_error
  gtk_header_bar_get_title
  gtk_header_bar_get_subtitle
  gtk_header_bar_get_custom_title
  gtk_icon_info_get_filename
  gtk_icon_view_get_path_at_pos
  gtk_icon_view_get_model
  gtk_image_get_pixbuf
  gtk_image_get_animation
  gtk_label_get_mnemonic_widget
  gtk_label_get_attributes
  gtk_check_version
  gtk_menu_button_get_popup
  gtk_menu_button_get_menu_model
  gtk_menu_button_get_align_widget
  gtk_menu_button_get_popover
  gtk_menu_item_get_submenu
  gtk_menu_item_get_accel_path
  gtk_native_dialog_get_title
  gtk_native_dialog_get_transient_for
  gtk_notebook_get_nth_page
  gtk_notebook_get_tab_label_text
  gtk_notebook_get_menu_label
  gtk_notebook_get_menu_label_text
  gtk_notebook_get_group_name
  gtk_notebook_get_action_widget
  gtk_offscreen_window_get_surface
  gtk_offscreen_window_get_pixbuf
  gtk_paned_get_child1
  gtk_paned_get_child2
  gtk_places_sidebar_get_location
  gtk_places_sidebar_get_nth_bookmark
  gtk_plug_get_socket_window
  gtk_popover_get_default_widget
  gtk_progress_bar_get_text
  gtk_recent_filter_get_name
  gtk_recent_manager_lookup_item
  gtk_settings_get_default
  gtk_socket_get_plug_window
  gtk_stack_sidebar_get_stack
  gtk_stack_switcher_get_stack
  gtk_style_context_get_section
  gtk_style_context_get_parent
  gtk_style_context_get_frame_clock
  gtk_test_find_widget
  gtk_text_buffer_get_mark
  gtk_text_tag_table_lookup
  gtk_text_view_get_tabs
  gtk_text_view_toggle_cursor_visible
  gtk_text_view_get_window
  gtk_toolbar_get_nth_item
  gtk_tool_button_get_label
  gtk_tool_button_get_icon_name
  gtk_tool_button_get_label_widget
  gtk_tool_button_get_icon_widget
  gtk_tool_palette_get_drop_item
  gtk_tool_palette_get_drop_group
  gtk_tree_model_filter_convert_child_path_to_path
  gtk_tree_model_filter_convert_path_to_child_path
  gtk_tree_model_sort_convert_child_path_to_path
  gtk_tree_model_sort_convert_path_to_child_path
  gtk_tree_view_get_column
  gtk_tree_view_get_bin_window
  gtk_tree_view_column_get_widget
  gtk_tree_view_column_get_tree_view
  gtk_widget_get_frame_clock
  gtk_window_group_get_current_device_grab
  GtkTextBufferSerializeFunc

1 files changed, 20 insertions, 19 deletions

diff --git a/gtk/gtkfilechooser.c b/gtk/gtkfilechooser.c
index 5ed25fddd3..101decb5e3 100644
--- a/gtk/gtkfilechooser.c
+++ b/gtk/gtkfilechooser.c
@@ -673,8 +673,8 @@ gtk_file_chooser_get_create_folders (GtkFileChooser *chooser)
  * If the file chooser is in folder mode, this function returns the selected
  * folder.
  * 
- * Returns: (type filename): The currently selected filename, or %NULL
- *  if no file is selected, or the selected file can't
+ * Returns: (nullable) (type filename): The currently selected filename,
+ *  or %NULL if no file is selected, or the selected file can't
  *  be represented with a local filename. Free with g_free().
  *
  * Since: 2.4
@@ -927,8 +927,8 @@ gtk_file_chooser_set_current_folder (GtkFileChooser *chooser,
  * currently-selected folder in that mode, use gtk_file_chooser_get_uri() as the
  * usual way to get the selection.
  * 
- * Returns: (type filename): the full path of the current folder,
- * or %NULL if the current path cannot be represented as a local
+ * Returns: (nullable) (type filename): the full path of the current
+ * folder, or %NULL if the current path cannot be represented as a local
  * filename.  Free with g_free().  This function will also return
  * %NULL if the file chooser was unable to load the last folder that
  * was requested from it; for example, as would be for calling
@@ -1021,10 +1021,10 @@ gtk_file_chooser_get_current_name (GtkFileChooser *chooser)
  * If the file chooser is in folder mode, this function returns the selected
  * folder.
  * 
- * Returns: The currently selected URI, or %NULL
- *  if no file is selected. If gtk_file_chooser_set_local_only() is set to %TRUE
- * (the default) a local URI will be returned for any FUSE locations.
- * Free with g_free()
+ * Returns: (nullable) (transfer full): The currently selected URI, or %NULL
+ *    if no file is selected. If gtk_file_chooser_set_local_only() is set to
+ *    %TRUE (the default) a local URI will be returned for any FUSE locations.
+ *    Free with g_free()
  *
  * Since: 2.4
  **/
@@ -1272,10 +1272,11 @@ gtk_file_chooser_set_current_folder_uri (GtkFileChooser *chooser,
  * currently-selected folder in that mode, use gtk_file_chooser_get_uri() as the
  * usual way to get the selection.
  * 
- * Returns: the URI for the current folder.  Free with g_free().  This
- * function will also return %NULL if the file chooser was unable to load the
- * last folder that was requested from it; for example, as would be for calling
- * gtk_file_chooser_set_current_folder_uri() on a nonexistent folder.
+ * Returns: (nullable) (transfer full): the URI for the current folder.
+ * Free with g_free().  This function will also return %NULL if the file chooser
+ * was unable to load the last folder that was requested from it; for example,
+ * as would be for calling gtk_file_chooser_set_current_folder_uri() on a
+ * nonexistent folder.
  *
  * Since: 2.4
  */
@@ -1560,7 +1561,7 @@ gtk_file_chooser_set_preview_widget (GtkFileChooser *chooser,
  * Gets the current preview widget; see
  * gtk_file_chooser_set_preview_widget().
  *
- * Returns: (transfer none): the current preview widget, or %NULL
+ * Returns: (nullable) (transfer none): the current preview widget, or %NULL
  *
  * Since: 2.4
  **/
@@ -1682,7 +1683,7 @@ gtk_file_chooser_get_use_preview_label (GtkFileChooser *chooser)
  * Gets the #GFile that should be previewed in a custom preview
  * Internal function, see gtk_file_chooser_get_preview_uri().
  *
- * Returns: (transfer full): the #GFile for the file to preview,
+ * Returns: (nullable) (transfer full): the #GFile for the file to preview,
  *     or %NULL if no file is selected. Free with g_object_unref().
  *
  * Since: 2.14
@@ -1752,7 +1753,7 @@ _gtk_file_chooser_remove_shortcut_folder (GtkFileChooser  *chooser,
  * Gets the filename that should be previewed in a custom preview
  * widget. See gtk_file_chooser_set_preview_widget().
  * 
- * Returns: (type filename): the filename to preview, or %NULL if
+ * Returns: (nullable) (type filename): the filename to preview, or %NULL if
  *  no file is selected, or if the selected file cannot be represented
  *  as a local filename. Free with g_free()
  *
@@ -1783,8 +1784,8 @@ gtk_file_chooser_get_preview_filename (GtkFileChooser *chooser)
  * Gets the URI that should be previewed in a custom preview
  * widget. See gtk_file_chooser_set_preview_widget().
  * 
- * Returns: the URI for the file to preview, or %NULL if no file is
- * selected. Free with g_free().
+ * Returns: (nullable) (transfer full): the URI for the file to preview,
+ *     or %NULL if no file is selected. Free with g_free().
  *
  * Since: 2.4
  **/
@@ -1831,7 +1832,7 @@ gtk_file_chooser_set_extra_widget (GtkFileChooser *chooser,
  * Gets the current preview widget; see
  * gtk_file_chooser_set_extra_widget().
  *
- * Returns: (transfer none): the current extra widget, or %NULL
+ * Returns: (nullable) (transfer none): the current extra widget, or %NULL
  *
  * Since: 2.4
  **/
@@ -1947,7 +1948,7 @@ gtk_file_chooser_set_filter (GtkFileChooser *chooser,
  *
  * Gets the current filter; see gtk_file_chooser_set_filter().
  *
- * Returns: (transfer none): the current filter, or %NULL
+ * Returns: (nullable) (transfer none): the current filter, or %NULL
  *
  * Since: 2.4
  **/