terminal_interface-curses-forms-field_types-enumeration.ads

# File : terminal_interface-curses-forms-field_types-enumeration.ads

    ------------------------------------------------------------------------------
    --                                                                          --
    --                           GNAT ncurses Binding                           --
    --                                                                          --
    --           Terminal_Interface.Curses.Forms.Field_Types.Enumeration        --
    --                                                                          --
    --                                 S P E C                                  --
    --                                                                          --
    ------------------------------------------------------------------------------
    -- Copyright (c) 1998 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.                                                           --
    ------------------------------------------------------------------------------
    --  Jürgen Pfeifer (juergen.pfeifer@gmx.net) 1996                          --
    --  Version Control:
    --  @Revision: 1.9 @
    --  Binding Version 01.00
    ------------------------------------------------------------------------------
    with Interfaces.C.Strings;

    package Terminal_Interface.Curses.Forms.Field_Types.Enumeration is
       pragma Preelaborate
         (Terminal_Interface.Curses.Forms.Field_Types.Enumeration);

       type String_Access is access String;

      --  Type_Set is used by the child package Ada
       type Type_Set is (Lower_Case, Upper_Case, Mixed_Case);

       type Enum_Array is array (Positive range <>)
         of String_Access;

       type Enumeration_Info (C : Positive) is
          record
             Names                : Enum_Array (1 .. C);
             Case_Sensitive       : Boolean := False;
             Match_Must_Be_Unique : Boolean := False;
          end record;

       type Enumeration_Field is new Field_Type with private;

       function Create (Info : Enumeration_Info;
                        Auto_Release_Names : Boolean := False)
                        return Enumeration_Field;
      --  Make an fieldtype from the info. Enumerations are special, because
      --  they normally don't copy the enum values into a private store, so
      --  we have to care for the lifetime of the info we provide.
      --  The Auto_Release_Names flag may be used to automatically releases
      --  the strings in the Names array of the Enumeration_Info.

       function Make_Enumeration_Type (Info : Enumeration_Info;
                                       Auto_Release_Names : Boolean := False)
                                       return Enumeration_Field renames Create;

       procedure Release (Enum : in out Enumeration_Field);
      --  But we may want to release the field to release the memory allocated
      --  by it internally. After that the Enumeration field is no longer usable.

      --  The next type defintions are all ncurses extensions. They are typically
      --  not available in other curses implementations.

       procedure Set_Field_Type (Fld : in Field;
                                 Typ : in Enumeration_Field);
       pragma Inline (Set_Field_Type);

    private
       type CPA_Access is access Interfaces.C.Strings.chars_ptr_array;

       type Enumeration_Field is new Field_Type with
          record
             Case_Sensitive       : Boolean := False;
             Match_Must_Be_Unique : Boolean := False;
             Arr                  : CPA_Access := null;
          end record;

    end Terminal_Interface.Curses.Forms.Field_Types.Enumeration;