2000-05-01  Gene Z. Ragan  <gzr@eazel.com>

	* libnautilus-extensions/nautilus-icon-text-item.c
	* libnautilus-extensions/nautilus-icon-private.h
	(iti_event),
	(nautilus_icon_text_item_configure),
	(nautilus_icon_text_item_start_editing),
	(save_undo_snapshot_callback),
	(restore_from_undo_snapshot_callback):

	* libnautilus-extensions/nautilus-undo-manager.c
	(nautilus_undo_manager_remove_transaction),
	(nautilus_undo_manager_add_undo_transaction),
	(nautilus_undo_manager_add_redo_transaction),
	(prune_undo_manager_list):
	Fixed bug in above functions where GList was not getting properly updated
	after an insert or remove operation.

	* src/nautilus-location-bar.c
	(nautilus_location_bar_initialize_class):
	Added signal connection to the "changed" signal of the GtkEntry item.
	(editable_changed_callback):
	Added undo operation functionality.
	Original location text is cached in anticipation of an undo operation.
	(nautilus_location_bar_initialize):
	Added two new memeber variables, undo_text and undo_registered.  undo_text is
	a char * that keeps a cache of the location text before editing.
	undo_registered is a boolean that is set when an undo can be registered.
	(nautilus_location_bar_set_location):
	undo_registered is set to FALSE and undo_text is updated.
	(save_undo_snapshot_callback):
	Callback called to create undo transaction
	(restore_from_undo_snapshot_callback):
	Callback called to restore the location bar text.
	(destroy):
	undo_text is freed if it has been allocated.