------------------------------------------------------------------------------ -- -- -- 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;