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------------------------------------------------------------------------------
-- --
-- GNAT ncurses Binding --
-- --
-- Terminal_Interface.Curses.Forms.Field_Types.User.Choice --
-- --
-- S P E C --
-- --
------------------------------------------------------------------------------
-- Copyright (c) 1998-2008,2011 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: 1.14 $
-- $Date: 2011/03/19 12:27:47 $
-- Binding Version 01.00
------------------------------------------------------------------------------
with Interfaces.C;
package Terminal_Interface.Curses.Forms.Field_Types.User.Choice is
pragma Preelaborate
(Terminal_Interface.Curses.Forms.Field_Types.User.Choice);
subtype C_Int is Interfaces.C.int;
type User_Defined_Field_Type_With_Choice is abstract new
User_Defined_Field_Type with null record;
-- This is the root of the mechanism we use to create field types in
-- Ada95 that allow the prev/next mechanism. You should your own type
-- derive from this one and implement the Field_Check, Character_Check
-- Next and Previous functions for your own type.
type User_Defined_Field_Type_With_Choice_Access is access all
User_Defined_Field_Type_With_Choice'Class;
function Next
(Fld : Field;
Typ : User_Defined_Field_Type_With_Choice) return Boolean
is abstract;
-- If True is returned, the function successfully generated a next
-- value into the fields buffer.
function Previous
(Fld : Field;
Typ : User_Defined_Field_Type_With_Choice) return Boolean
is abstract;
-- If True is returned, the function successfully generated a previous
-- value into the fields buffer.
-- +----------------------------------------------------------------------
-- | Private Part.
-- |
private
function C_Generic_Choice return C_Field_Type;
function Generic_Next (Fld : Field;
Usr : System.Address) return Curses_Bool;
pragma Convention (C, Generic_Next);
-- This is the generic next Choice_Function for the low-level fieldtype
-- representing all the User_Defined_Field_Type derivatives. It routes
-- the call to the Next implementation for the type.
function Generic_Prev (Fld : Field;
Usr : System.Address) return Curses_Bool;
pragma Convention (C, Generic_Prev);
-- This is the generic prev Choice_Function for the low-level fieldtype
-- representing all the User_Defined_Field_Type derivatives. It routes
-- the call to the Previous implementation for the type.
end Terminal_Interface.Curses.Forms.Field_Types.User.Choice;