2003-05-18  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpmarshal.list: added BOOLEAN: OBJECT, POINTER.

	* app/widgets/gimpcontainerview.[ch]: added a boolean return
	value to GimpContainerView::select_item() which indicates if
	the select operation was successful.

	* app/widgets/gimpchanneltreeview.c
	* app/widgets/gimpcontainereditor.c
	* app/widgets/gimpcontainergridview.c
	* app/widgets/gimpcontainertreeview.c
	* app/widgets/gimpitemtreeview.c
	* app/widgets/gimplayertreeview.c
	* app/widgets/gimpvectorstreeview.c: changed accordingly.

	* app/widgets/gimpdrawabletreeview.c: ditto. Removed the
	tree_view's select_function because it was only constraining the
	widget, not the underlying select operation. Instead, implement
	GimpContainerView::select_item() and disallow anything but the
	floating selection to be selected. Also re-enabled the
	"floating_selection_changed" callback and explicitely set the
	active item so the button states get updated. Fixes bug #112487.