1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding --
5 -- Terminal_Interface.Curses.Forms.Field_Types.User.Choice --
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
39 -- Binding Version 01.00
40 ------------------------------------------------------------------------------
43 package Terminal_Interface.Curses.Forms.Field_Types.User.Choice is
45 (Terminal_Interface.Curses.Forms.Field_Types.User.Choice);
47 use type Interfaces.C.int;
48 subtype C_Int is Interfaces.C.int;
50 type User_Defined_Field_Type_With_Choice is abstract new
51 User_Defined_Field_Type with null record;
52 -- This is the root of the mechanism we use to create field types in
53 -- Ada95 that allow the prev/next mechanism. You should your own type
54 -- derive from this one and implement the Field_Check, Character_Check
55 -- Next and Previous functions for your own type.
57 type User_Defined_Field_Type_With_Choice_Access is access all
58 User_Defined_Field_Type_With_Choice'Class;
62 Typ : User_Defined_Field_Type_With_Choice) return Boolean
64 -- If True is returned, the function successfully generated a next
65 -- value into the fields buffer.
69 Typ : User_Defined_Field_Type_With_Choice) return Boolean
71 -- If True is returned, the function successfully generated a previous
72 -- value into the fields buffer.
74 -- +----------------------------------------------------------------------
78 use type Interfaces.C.int;
80 function C_Generic_Choice return C_Field_Type;
82 function Generic_Next (Fld : Field;
83 Usr : System.Address) return C_Int;
84 pragma Convention (C, Generic_Next);
85 -- This is the generic next Choice_Function for the low-level fieldtype
86 -- representing all the User_Defined_Field_Type derivates. It routes
87 -- the call to the Next implementation for the type.
89 function Generic_Prev (Fld : Field;
90 Usr : System.Address) return C_Int;
91 pragma Convention (C, Generic_Prev);
92 -- This is the generic prev Choice_Function for the low-level fieldtype
93 -- representing all the User_Defined_Field_Type derivates. It routes
94 -- the call to the Previous implementation for the type.
96 end Terminal_Interface.Curses.Forms.Field_Types.User.Choice;