1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding --
5 -- Terminal_Interface.Curses.Forms.Field_Types.User --
9 ------------------------------------------------------------------------------
10 -- Copyright (c) 1998 Free Software Foundation, Inc. --
12 -- Permission is hereby granted, free of charge, to any person obtaining a --
13 -- copy of this software and associated documentation files (the --
14 -- "Software"), to deal in the Software without restriction, including --
15 -- without limitation the rights to use, copy, modify, merge, publish, --
16 -- distribute, distribute with modifications, sublicense, and/or sell --
17 -- copies of the Software, and to permit persons to whom the Software is --
18 -- furnished to do so, subject to the following conditions: --
20 -- The above copyright notice and this permission notice shall be included --
21 -- in all copies or substantial portions of the Software. --
23 -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
24 -- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
25 -- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
26 -- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
27 -- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
28 -- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
29 -- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
31 -- Except as contained in this notice, the name(s) of the above copyright --
32 -- holders shall not be used in advertising or otherwise to promote the --
33 -- sale, use or other dealings in this Software without prior written --
35 ------------------------------------------------------------------------------
36 -- Author: Juergen Pfeifer, 1996
37 -- Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en
40 -- Binding Version 01.00
41 ------------------------------------------------------------------------------
44 package Terminal_Interface.Curses.Forms.Field_Types.User is
45 pragma Preelaborate (Terminal_Interface.Curses.Forms.Field_Types.User);
46 use type Interfaces.C.int;
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 : in Field;
72 Typ : in 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 use type Interfaces.C.int;
82 function C_Generic_Type return C_Field_Type;
84 function Generic_Field_Check (Fld : Field;
85 Usr : System.Address) return C_Int;
86 pragma Convention (C, Generic_Field_Check);
87 -- This is the generic Field_Check_Function for the low-level fieldtype
88 -- representing all the User_Defined_Field_Type derivates. It routes
89 -- the call to the Field_Check implementation for the type.
91 function Generic_Char_Check (Ch : C_Int;
92 Usr : System.Address) return C_Int;
93 pragma Convention (C, Generic_Char_Check);
94 -- This is the generic Char_Check_Function for the low-level fieldtype
95 -- representing all the User_Defined_Field_Type derivates. It routes
96 -- the call to the Character_Check implementation for the type.
98 end Terminal_Interface.Curses.Forms.Field_Types.User;