indexing status: "See notice at end of class"; date: "$Date$"; revision: "$Revision$" class HISTORY_CLCK inherit COMMAND redefine context_data_useful end feature -- Status report context_data_useful: BOOLEAN is true; -- This command need a context_data structure feature -- Basic operations execute (argument: ANY) is -- Undo the current command. local history: HISTORY_L_W; single_data: SINGLE_DATA do single_data ?= context_data; history ?= argument; if history.history_list /= Void then history.history_list.go_i_th (single_data.position) end end; end -- class HISTORY_CLCK --|---------------------------------------------------------------- --| EiffelVision: library of reusable components for ISE Eiffel. --| Copyright (C) 1985-2004 Eiffel Software. All rights reserved. --| Duplication and distribution prohibited. May be used only with --| ISE Eiffel, under terms of user license. --| Contact Eiffel Software for any other use. --| --| Interactive Software Engineering Inc. --| dba Eiffel Software --| 356 Storke Road, Goleta, CA 93117 USA --| Telephone 805-685-1006, Fax 805-685-6869 --| Contact us at: http://www.eiffel.com/general/email.html --| Customer support: http://support.eiffel.com --| For latest info on our award winning products, visit: --| http://www.eiffel.com --|----------------------------------------------------------------