2006-08-15  Vincent Untz  <vuntz@gnome.org>

	Lot of work. Basically: make balloon messages work, and make them
	work in a good way.
	Big part of fix for bug #104641.

	* fixedtip.[ch]: change this to be a widget. This is basically a
	rewrite.
	* main.c: keep a hash table for the messages displayed (and the next
	buffered messages for each tray icon) on each screen
	(icon_tip_buffer_free): new
	(icon_tip_free): new
	(icon_tip_buffer_compare): new
	(icon_tip_show_next_clicked): new, display next message for the tray
	icon when the message is clicked,
	(icon_tip_show_next_timeout): new, display next message for the tray
	icon after the timeout of the current message
	(icon_tip_show_next): new, do all the work to display the next message
	(message_sent): don't accept a message with the same id as one we
	already got, don't accept a message from an icon we don't know, add
	the message to the buffer and display it if necessary
	(message_cancelled): show the next message if the cancelled message is
	the displayed one, else remove the buffered message with the specified
	id
	(update_orientation_for_messages): update orientation of all displayed
	messages, called when the tray orientation changes
	(update_size_and_orientation): call update_orientation_for_messages(),
	don't change the orientation of the tray manager if the tray is not
	the one used by the manager (yay for multiple trays on the same
	screen!)
	(free_tray): updated to kill new data if we let the manager go,
	update the manager orientation to be the one of the new 'current' tray
	(applet_factory): create hash table
	* na-tray-manager.[ch]: remove useless stuff (following use of
	G_DEFINE_TYPE)
	(na_tray_manager_class_init): parent_class renaming
	(na_tray_manager_socket_exposed): new, since it seems it's useful for
	transparency with some themes (see bug #100600)
	(na_tray_manager_socket_style_set): renamed from
	na_tray_manager_make_socket_style_set()
	(na_tray_manager_handle_dock_request): don't use double buffering for
	the socket, and connect to the expose event (see bug #100600)
	(na_tray_manager_handle_message_data): renamed to
	na_tray_manager_handle_client_message_message_data(), beautify code
	and make it a callback to handle client messages
	(na_tray_manager_handle_begin_message): don't accept the message if we
	don't know the tray icon, fix small leak, emit "message-sent" signal
	if the size of the message is 0
	(na_tray_manager_handle_cancel_message): remove the message from the
	pending queue if it's there
	(na_tray_manager_handle_event): renamed to...
	(na_tray_manager_handle_client_message_opcode): ... this, don't handle
	SYSTEM_TRAY_REQUEST_DOCK here
	(na_tray_manager_window_filter): beautify, only handle
	SYSTEM_TRAY_REQUEST_DOCK client messages here
	(na_tray_manager_selection_clear_event): new, commented out for future
	use
	(na_tray_manager_unmanage): use gdk_selection_owner_set_for_display()
	instead of X functions, add FIXME for when GTK+ 2.11 will exist
	(na_tray_manager_set_orientation_property): get the atom here, instead
	of keeping it in the manager structure
	(na_tray_manager_manage_screen_x11): beautify, use
	gdk_selection_owner_set_for_display(), use
	gdk_display_add_client_message_filter() to get the client messages
	* obox.c: remove useless stuff (following use of G_DEFINE_TYPE)