2003-03-16  Michael Natterer  <mitch@gimp.org>

	* app/widgets/gimpcontainertreeview.[ch]: added utility function
	gimp_container_tree_view_find_click_cell(). Don't select the
	row if one of tree_view->toggle_cells was clicked. Removed
	"GList *toggle_columns" from the struct.

	* app/widgets/gimpdrawabletreeview.[ch]: added a
	GtkTreeSelectionFunc which ensures that nothing but the floating
	selection can be selected. Removed the "eye_column" from the
	struct.

	* app/widgets/gimpitemtreeview.[ch]: added virtual function
	rename_item() and a default implementation.

	* app/widgets/gimplayertreeview.[ch]: implement rename_item() and
	special case floating selections. Added
	gimp_layer_tree_view_mask_update() utility function to factor out
	duplicated code. Removed "chain_column" from the struct. Cleanup.