Add gboolean return values and GError arguments to ::set_current_folder()

Add gboolean return values and GError arguments to ::set_current_folder()

2004-03-05  Federico Mena Quintero  <federico@ximian.com>

	* gtk/gtkfilechooserprivate.h (struct _GtkFileChooserIface): Add
	gboolean return values and GError arguments to
	::set_current_folder() and ::select_path().

	* gtk/gtkfilechooser.c (gtk_file_chooser_set_current_folder):
	Return a boolean value for success/failure.
	(gtk_file_chooser_set_current_folder_uri): Likewise.
	(gtk_file_chooser_select_filename): Likewise.
	(gtk_file_chooser_select_uri): Likewise.
	(gtk_file_chooser_set_filename): Likewise.
	(gtk_file_chooser_set_uri): Likewise.
	(_gtk_file_chooser_set_current_folder_path): Likewise, plus take
	in a GError.
	(_gtk_file_chooser_select_path): Likewise.

	* gtk/gtkfilechooserutils.c (delegate_set_current_folder):
	Likewise.
	(delegate_select_path): Likewise.

	* gtk/gtkfilechooserdefault.c
	(gtk_file_chooser_default_select_path): Likewise.
	(gtk_file_chooser_default_set_current_folder): Likewise.
	(error_changing_folder_dialog): New helper function.
	(change_folder_and_display_error): New helper function.
	(switch_to_selected_folder): Use change_folder_and_display_error().
	(tree_selection_changed): Likewise.
	(shortcuts_activate_volume): Likewise.
	(shortcuts_activate_item): Likewise.
	(list_row_activated): Likewise.
	(path_bar_clicked): Likewise.
	(update_from_entry): Likewise.
	(up_folder_handler): Likewise.
	(home_folder_handler): Get the home path from the shortcuts model,
	and use change_folder_and_display_error().

	* tests/testfilechooser.c (set_current_folder): New helper
	function; pops up a simple error dialog if necessary.
	(set_filename): Likewise.
	(set_folder_nonexistent_cb): Use set_current_folder().
	(set_folder_existing_nonexistent_cb): Likewise.
	(set_filename_nonexistent_cb): Use set_filename().
	(set_filename_existing_nonexistent_cb): Likewise.