1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding --
5 -- Terminal_Interface.Curses.Forms.Field_Types.User --
9 ------------------------------------------------------------------------------
10 -- Copyright 2020 Thomas E. Dickey --
11 -- Copyright 1999-2009,2011 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 ------------------------------------------------------------------------------
45 package Terminal_Interface.Curses.Forms.Field_Types.User is
46 pragma Preelaborate (Terminal_Interface.Curses.Forms.Field_Types.User);
47 subtype C_Int is Interfaces.C.int;
49 type User_Defined_Field_Type is abstract new Field_Type with null record;
50 -- This is the root of the mechanism we use to create field types in
51 -- Ada95. You should your own type derive from this one and implement
52 -- the Field_Check and Character_Check functions for your own type.
54 type User_Defined_Field_Type_Access is access all
55 User_Defined_Field_Type'Class;
59 Typ : User_Defined_Field_Type) return Boolean
61 -- If True is returned, the field is considered valid, otherwise it is
64 function Character_Check
66 Typ : User_Defined_Field_Type) return Boolean
68 -- If True is returned, the character is considered as valid for the
69 -- field, otherwise as invalid.
71 procedure Set_Field_Type (Fld : Field;
72 Typ : User_Defined_Field_Type);
73 -- This should work for all types derived from User_Defined_Field_Type.
74 -- No need to reimplement it for your derived type.
76 -- +----------------------------------------------------------------------
78 -- | Used by the Choice child package.
80 function C_Generic_Type return C_Field_Type;
82 function Generic_Field_Check (Fld : Field;
83 Usr : System.Address) return Curses_Bool;
84 pragma Convention (C, Generic_Field_Check);
85 -- This is the generic Field_Check_Function for the low-level fieldtype
86 -- representing all the User_Defined_Field_Type derivatives. It routes
87 -- the call to the Field_Check implementation for the type.
89 function Generic_Char_Check (Ch : C_Int;
90 Usr : System.Address) return Curses_Bool;
91 pragma Convention (C, Generic_Char_Check);
92 -- This is the generic Char_Check_Function for the low-level fieldtype
93 -- representing all the User_Defined_Field_Type derivatives. It routes
94 -- the call to the Character_Check implementation for the type.
96 end Terminal_Interface.Curses.Forms.Field_Types.User;