2001-02-26  John Harper  <jsh@eazel.com>

	reviewed by: Michael Engber <engber@eazel.com>

	Fixed bug 6898 (Tree view initialization may be slower than in
	PR3). Instead of instantiating and destroying Nautilus_Metafile
	bonobo objects each time metadata is queried, cache an object
	for each directory:

	* libnautilus-extensions/nautilus-directory-metafile.c
	(corba_object_is_local, corba_object_get_servant): new
	functions. These are ORBit dependent hacks

	(get_metafile): cache the Nautilus_Metafile object in the
	NautilusDirectory. Use the above ORBit hacks to break the
	circular reference when both client and servant are in the same
	process (the servant has always referenced the directory,
	caching the metafile in the directory introduces the cycle)

	* libnautilus-extensions/nautilus-directory-private.h
	(NautilusDirectoryDetails): added field metafile_corba_object

	* libnautilus-extensions/nautilus-directory.c
	(nautilus_directory_destroy): unref the cached
	Nautilus_Metafile object if its non-nil

	* libnautilus-extensions/nautilus-metafile.c,
	libnautilus-extensions/nautilus-metafile.h
	(NautilusMetafileDetails): temporarily moved to
	nautilus-metafile.h

	* libnautilus-extensions/nautilus-metafile.c (destroy): only
	unref the metafile's NautilusDirectory if the
	directory_ref_is_gone flag isn't set (set by the get_metafile
	method of nautilus-directory-metafile.c when it breaks the
	cycle)

2001-02-26  John Harper  <jsh@eazel.com>

	reviewed by Darin Adler <darin@eazel.com>

	Moved much of the BonoboUI overhead to the idle handler. This
	should decrease latency when opening new windows.

	* src/nautilus-window-private.h: added fields to
	NautilusWindowDetails structure: ui_change_depth, ui_idle_id,
	ui_is_frozen, ui_pending_menu_initialize

	* src/nautilus-window.c, src/nautilus-window.h
	(nautilus_window_ui_freeze, nautilus_window_ui_thaw): new
	functions. Used to intelligently freeze and thaw the
	BonoboUIEngine associated with the window's container. The
	thawing (and thus the updating) is done in an idle handler

	(nautilus_window_ui_update): used to defeat the UI deferral,
	and update immediately

	(nautilus_window_constructed): moved part of the menu bar
	initialization to the idle handler

	* src/nautilus-window-manage-views.c,
	src/nautilus-window-menus.c, src/nautilus-window-toolbar.c,
	src/nautilus-window.c: call nautilus_window_ui_freeze before
	doing any UI changes, and nautilus_window_ui_thaw afterwards

	* src/nautilus-window-menus.c
	(nautilus_window_initialize_menus): split into two functions:
	nautilus_window_initialize_menus_part_1 and _part_2. Part two
	populates the `Go' and `Bookmarks' menus (and is deferred until
	the idle loop)