File : terminal_interface-curses-forms.adb

------------------------------------------------------------------------------
--                                                                          --
--                           GNAT ncurses Binding                           --
--                                                                          --
--                      Terminal_Interface.Curses.Forms                     --
--                                                                          --
--                                 B O D Y                                  --
--                                                                          --
------------------------------------------------------------------------------
-- Copyright (c) 1998-2008,2009 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: 1.27 @
--  @Date: 2009/12/26 17:38:58 @
--  Binding Version 01.00
------------------------------------------------------------------------------
with Ada.Unchecked_Deallocation;
with Ada.Unchecked_Conversion;

with Interfaces.C; use Interfaces.C;
with Interfaces.C.Strings; use Interfaces.C.Strings;
with Interfaces.C.Pointers;

with Terminal_Interface.Curses.Aux;

package body Terminal_Interface.Curses.Forms is

   use Terminal_Interface.Curses.Aux;

   type C_Field_Array is array (Natural range <>) of aliased Field;
   package F_Array is new
     Interfaces.C.Pointers (Natural, Field, C_Field_Array, Null_Field);

------------------------------------------------------------------------------
   --  |
   --  |
   --  |
   --  subtype chars_ptr is Interfaces.C.Strings.chars_ptr;

   function FOS_2_CInt is new
     Ada.Unchecked_Conversion (Field_Option_Set,
                               C_Int);

   function CInt_2_FOS is new
     Ada.Unchecked_Conversion (C_Int,
                               Field_Option_Set);

   function FrmOS_2_CInt is new
     Ada.Unchecked_Conversion (Form_Option_Set,
                               C_Int);

   function CInt_2_FrmOS is new
     Ada.Unchecked_Conversion (C_Int,
                               Form_Option_Set);

   procedure Request_Name (Key  : Form_Request_Code;
                                Name : out String)
   is
      function Form_Request_Name (Key : C_Int) return chars_ptr;
      pragma Import (C, Form_Request_Name, "form_request_name");
   begin
      Fill_String (Form_Request_Name (C_Int (Key)), Name);
   end Request_Name;

   function Request_Name (Key : Form_Request_Code) return String
   is
      function Form_Request_Name (Key : C_Int) return chars_ptr;
      pragma Import (C, Form_Request_Name, "form_request_name");
   begin
      return Fill_String (Form_Request_Name (C_Int (Key)));
   end Request_Name;
------------------------------------------------------------------------------
   --  |
   --  |
   --  |
   --  |
   --  |=====================================================================
   --  | man page form_field_new.3x
   --  |=====================================================================
   --  |
   --  |
   --  |
   function Create (Height       : Line_Count;
                    Width        : Column_Count;
                    Top          : Line_Position;
                    Left         : Column_Position;