| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT ncurses Binding -- |
| -- -- |
| -- Terminal_Interface.Curses.Forms.Field_Types.User -- |
| -- -- |
| -- B O D Y -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| -- Copyright (c) 1998-2011,2014 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: 1.23 $ |
| -- $Date: 2014/05/24 21:31:05 $ |
| -- Binding Version 01.00 |
| ------------------------------------------------------------------------------ |
| with System.Address_To_Access_Conversions; |
| with Terminal_Interface.Curses.Aux; use Terminal_Interface.Curses.Aux; |
| |
| package body Terminal_Interface.Curses.Forms.Field_Types.User is |
| |
| procedure Set_Field_Type (Fld : Field; |
| Typ : User_Defined_Field_Type) |
| is |
| function Allocate_Arg (T : User_Defined_Field_Type'Class) |
| return Argument_Access; |
| |
| function Set_Fld_Type (F : Field := Fld; |
| Cft : C_Field_Type := C_Generic_Type; |
| Arg1 : Argument_Access) |
| return Eti_Error; |
| pragma Import (C, Set_Fld_Type, "set_field_type_user"); |
| |
| function Allocate_Arg (T : User_Defined_Field_Type'Class) |
| return Argument_Access |
| is |
| Ptr : constant Field_Type_Access |
| := new User_Defined_Field_Type'Class'(T); |
| begin |
| return new Argument'(Usr => System.Null_Address, |
| Typ => Ptr, |
| Cft => Null_Field_Type); |
| end Allocate_Arg; |
| |
| begin |
| Eti_Exception (Set_Fld_Type (Arg1 => Allocate_Arg (Typ))); |
| end Set_Field_Type; |
| |
| package Argument_Conversions is |
| new System.Address_To_Access_Conversions (Argument); |
| |
| function Generic_Field_Check (Fld : Field; |
| Usr : System.Address) return Curses_Bool |
| is |
| Result : Boolean; |
| Udf : constant User_Defined_Field_Type_Access := |
| User_Defined_Field_Type_Access |
| (Argument_Access (Argument_Conversions.To_Pointer (Usr)).all.Typ); |
| begin |
| Result := Field_Check (Fld, Udf.all); |
| return Curses_Bool (Boolean'Pos (Result)); |
| end Generic_Field_Check; |
| |
| function Generic_Char_Check (Ch : C_Int; |
| Usr : System.Address) return Curses_Bool |
| is |
| Result : Boolean; |
| Udf : constant User_Defined_Field_Type_Access := |
| User_Defined_Field_Type_Access |
| (Argument_Access (Argument_Conversions.To_Pointer (Usr)).all.Typ); |
| begin |
| Result := Character_Check (Character'Val (Ch), Udf.all); |
| return Curses_Bool (Boolean'Pos (Result)); |
| end Generic_Char_Check; |
| |
| -- ----------------------------------------------------------------------- |
| -- |
| function C_Generic_Type return C_Field_Type |
| is |
| Res : Eti_Error; |
| T : C_Field_Type; |
| begin |
| if M_Generic_Type = Null_Field_Type then |
| T := New_Fieldtype (Generic_Field_Check'Access, |
| Generic_Char_Check'Access); |
| if T = Null_Field_Type then |
| raise Form_Exception; |
| else |
| Res := Set_Fieldtype_Arg (T, |
| Make_Arg'Access, |
| Copy_Arg'Access, |
| Free_Arg'Access); |
| Eti_Exception (Res); |
| end if; |
| M_Generic_Type := T; |
| end if; |
| pragma Assert (M_Generic_Type /= Null_Field_Type); |
| return M_Generic_Type; |
| end C_Generic_Type; |
| |
| end Terminal_Interface.Curses.Forms.Field_Types.User; |
