blob: 8414cd0385c7f5ad42be0db42643c1b8079d8745 [file] [log] [blame]
------------------------------------------------------------------------------
-- --
-- GNAT ncurses Binding --
-- --
-- Terminal_Interface.Curses.Forms.Field_Types.User.Choice --
-- --
-- B O D Y --
-- --
------------------------------------------------------------------------------
-- Copyright (c) 1998-2011,2014 Free Software Foundation, Inc. --
-- --
-- Permission is hereby granted, free of charge, to any person obtaining a --
-- copy of this software and associated documentation files (the --
-- "Software"), to deal in the Software without restriction, including --
-- without limitation the rights to use, copy, modify, merge, publish, --
-- distribute, distribute with modifications, sublicense, and/or sell --
-- copies of the Software, and to permit persons to whom the Software is --
-- furnished to do so, subject to the following conditions: --
-- --
-- The above copyright notice and this permission notice shall be included --
-- in all copies or substantial portions of the Software. --
-- --
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
-- --
-- Except as contained in this notice, the name(s) of the above copyright --
-- holders shall not be used in advertising or otherwise to promote the --
-- sale, use or other dealings in this Software without prior written --
-- authorization. --
------------------------------------------------------------------------------
-- Author: Juergen Pfeifer, 1996
-- Version Control:
-- $Revision: 1.20 $
-- $Date: 2014/05/24 21:31:05 $
-- Binding Version 01.00
------------------------------------------------------------------------------
with System.Address_To_Access_Conversions;
with Terminal_Interface.Curses.Aux; use Terminal_Interface.Curses.Aux;
package body Terminal_Interface.Curses.Forms.Field_Types.User.Choice is
package Argument_Conversions is
new System.Address_To_Access_Conversions (Argument);
function Generic_Next (Fld : Field;
Usr : System.Address) return Curses_Bool
is
Result : Boolean;
Udf : constant User_Defined_Field_Type_With_Choice_Access :=
User_Defined_Field_Type_With_Choice_Access
(Argument_Access (Argument_Conversions.To_Pointer (Usr)).all.Typ);
begin
Result := Next (Fld, Udf.all);
return Curses_Bool (Boolean'Pos (Result));
end Generic_Next;
function Generic_Prev (Fld : Field;
Usr : System.Address) return Curses_Bool
is
Result : Boolean;
Udf : constant User_Defined_Field_Type_With_Choice_Access :=
User_Defined_Field_Type_With_Choice_Access
(Argument_Access (Argument_Conversions.To_Pointer (Usr)).all.Typ);
begin
Result := Previous (Fld, Udf.all);
return Curses_Bool (Boolean'Pos (Result));
end Generic_Prev;
-- -----------------------------------------------------------------------
--
function C_Generic_Choice return C_Field_Type
is
Res : Eti_Error;
T : C_Field_Type;
begin
if M_Generic_Choice = Null_Field_Type then
T := New_Fieldtype (Generic_Field_Check'Access,
Generic_Char_Check'Access);
if T = Null_Field_Type then
raise Form_Exception;
else
Res := Set_Fieldtype_Arg (T,
Make_Arg'Access,
Copy_Arg'Access,
Free_Arg'Access);
Eti_Exception (Res);
Res := Set_Fieldtype_Choice (T,
Generic_Next'Access,
Generic_Prev'Access);
Eti_Exception (Res);
end if;
M_Generic_Choice := T;
end if;
pragma Assert (M_Generic_Choice /= Null_Field_Type);
return M_Generic_Choice;
end C_Generic_Choice;
end Terminal_Interface.Curses.Forms.Field_Types.User.Choice;