1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding --
5 -- Terminal_Interface.Curses.Forms.Field_Types.User.Choice --
9 ------------------------------------------------------------------------------
10 -- Copyright 2020 Thomas E. Dickey --
11 -- Copyright 1999-2011,2014 Free Software Foundation, Inc. --
13 -- Permission is hereby granted, free of charge, to any person obtaining a --
14 -- copy of this software and associated documentation files (the --
15 -- "Software"), to deal in the Software without restriction, including --
16 -- without limitation the rights to use, copy, modify, merge, publish, --
17 -- distribute, distribute with modifications, sublicense, and/or sell --
18 -- copies of the Software, and to permit persons to whom the Software is --
19 -- furnished to do so, subject to the following conditions: --
21 -- The above copyright notice and this permission notice shall be included --
22 -- in all copies or substantial portions of the Software. --
24 -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
25 -- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
26 -- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
27 -- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
28 -- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
29 -- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
30 -- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
32 -- Except as contained in this notice, the name(s) of the above copyright --
33 -- holders shall not be used in advertising or otherwise to promote the --
34 -- sale, use or other dealings in this Software without prior written --
36 ------------------------------------------------------------------------------
37 -- Author: Juergen Pfeifer, 1996
40 -- $Date: 2020/02/02 23:34:34 $
41 -- Binding Version 01.00
42 ------------------------------------------------------------------------------
43 with System.Address_To_Access_Conversions;
44 with Terminal_Interface.Curses.Aux; use Terminal_Interface.Curses.Aux;
46 package body Terminal_Interface.Curses.Forms.Field_Types.User.Choice is
48 package Argument_Conversions is
49 new System.Address_To_Access_Conversions (Argument);
51 function Generic_Next (Fld : Field;
52 Usr : System.Address) return Curses_Bool
55 Udf : constant User_Defined_Field_Type_With_Choice_Access :=
56 User_Defined_Field_Type_With_Choice_Access
57 (Argument_Access (Argument_Conversions.To_Pointer (Usr)).all.Typ);
59 Result := Next (Fld, Udf.all);
60 return Curses_Bool (Boolean'Pos (Result));
63 function Generic_Prev (Fld : Field;
64 Usr : System.Address) return Curses_Bool
67 Udf : constant User_Defined_Field_Type_With_Choice_Access :=
68 User_Defined_Field_Type_With_Choice_Access
69 (Argument_Access (Argument_Conversions.To_Pointer (Usr)).all.Typ);
71 Result := Previous (Fld, Udf.all);
72 return Curses_Bool (Boolean'Pos (Result));
75 -- -----------------------------------------------------------------------
77 function C_Generic_Choice return C_Field_Type
82 if M_Generic_Choice = Null_Field_Type then
83 T := New_Fieldtype (Generic_Field_Check'Access,
84 Generic_Char_Check'Access);
85 if T = Null_Field_Type then
88 Res := Set_Fieldtype_Arg (T,
94 Res := Set_Fieldtype_Choice (T,
99 M_Generic_Choice := T;
101 pragma Assert (M_Generic_Choice /= Null_Field_Type);
102 return M_Generic_Choice;
103 end C_Generic_Choice;
105 end Terminal_Interface.Curses.Forms.Field_Types.User.Choice;