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;
Off_Screen : Natural := 0;
More_Buffers : Buffer_Number := Buffer_Number'First)
return Field
is
function Newfield (H, W, T, L, O, M : C_Int) return Field;
pragma Import (C, Newfield, "new_field");
Fld : constant Field := Newfield (C_Int (Height), C_Int (Width),
C_Int (Top), C_Int (Left),
C_Int (Off_Screen),
C_Int (More_Buffers));
begin
if Fld = Null_Field then
raise Form_Exception;
end if;
return Fld;
end Create;
-- |
-- |
-- |
procedure Delete (Fld : in out Field)
is
function Free_Field (Fld : Field) return C_Int;
pragma Import (C, Free_Field, "free_field");
Res : Eti_Error;
begin
Res := Free_Field (Fld);
if Res /= E_Ok then
Eti_Exception (Res);
end if;
Fld := Null_Field;
end Delete;
-- |
-- |
-- |
function Duplicate (Fld : Field;
Top : Line_Position;
Left : Column_Position) return Field
is
function Dup_Field (Fld : Field;
Top : C_Int;
Left : C_Int) return Field;
pragma Import (C, Dup_Field, "dup_field");
F : constant Field := Dup_Field (Fld,
C_Int (Top),
C_Int (Left));
begin
if F = Null_Field then
raise Form_Exception;
end if;
return F;
end Duplicate;
-- |
-- |
-- |
function Link (Fld : Field;
Top : Line_Position;
Left : Column_Position) return Field
is
function Lnk_Field (Fld : Field;
Top : C_Int;
Left : C_Int) return Field;
pragma Import (C, Lnk_Field, "link_field");
F : constant Field := Lnk_Field (Fld,
C_Int (Top),
C_Int (Left));
begin
if F = Null_Field then
raise Form_Exception;
end if;
return F;
end Link;
-- |
-- |=====================================================================
-- | man page form_field_just.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Set_Justification (Fld : Field;
Just : Field_Justification := None)
is
function Set_Field_Just (Fld : Field;
Just : C_Int) return C_Int;
pragma Import (C, Set_Field_Just, "set_field_just");
Res : constant Eti_Error :=
Set_Field_Just (Fld,
C_Int (Field_Justification'Pos (Just)));
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Justification;
-- |
-- |
-- |
function Get_Justification (Fld : Field) return Field_Justification
is
function Field_Just (Fld : Field) return C_Int;
pragma Import (C, Field_Just, "field_just");
begin
return Field_Justification'Val (Field_Just (Fld));
end Get_Justification;
-- |
-- |=====================================================================
-- | man page form_field_buffer.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Set_Buffer
(Fld : Field;
Buffer : Buffer_Number := Buffer_Number'First;
Str : String)
is
type Char_Ptr is access all Interfaces.C.char;
function Set_Fld_Buffer (Fld : Field;
Bufnum : C_Int;
S : Char_Ptr)
return C_Int;
pragma Import (C, Set_Fld_Buffer, "set_field_buffer");
Txt : char_array (0 .. Str'Length);
Len : size_t;
Res : Eti_Error;
begin
To_C (Str, Txt, Len);
Res := Set_Fld_Buffer (Fld, C_Int (Buffer), Txt (Txt'First)'Access);
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Buffer;
-- |
-- |
-- |
procedure Get_Buffer
(Fld : Field;
Buffer : Buffer_Number := Buffer_Number'First;
Str : out String)
is
function Field_Buffer (Fld : Field;
B : C_Int) return chars_ptr;
pragma Import (C, Field_Buffer, "field_buffer");
begin
Fill_String (Field_Buffer (Fld, C_Int (Buffer)), Str);
end Get_Buffer;
function Get_Buffer
(Fld : Field;
Buffer : Buffer_Number := Buffer_Number'First) return String
is
function Field_Buffer (Fld : Field;
B : C_Int) return chars_ptr;
pragma Import (C, Field_Buffer, "field_buffer");
begin
return Fill_String (Field_Buffer (Fld, C_Int (Buffer)));
end Get_Buffer;
-- |
-- |
-- |
procedure Set_Status (Fld : Field;
Status : Boolean := True)
is
function Set_Fld_Status (Fld : Field;
St : C_Int) return C_Int;
pragma Import (C, Set_Fld_Status, "set_field_status");
Res : constant Eti_Error := Set_Fld_Status (Fld, Boolean'Pos (Status));
begin
if Res /= E_Ok then
raise Form_Exception;
end if;
end Set_Status;
-- |
-- |
-- |
function Changed (Fld : Field) return Boolean
is
function Field_Status (Fld : Field) return C_Int;
pragma Import (C, Field_Status, "field_status");
Res : constant C_Int := Field_Status (Fld);
begin
if Res = Curses_False then
return False;
else
return True;
end if;
end Changed;
-- |
-- |
-- |
procedure Set_Maximum_Size (Fld : Field;
Max : Natural := 0)
is
function Set_Field_Max (Fld : Field;
M : C_Int) return C_Int;
pragma Import (C, Set_Field_Max, "set_max_field");
Res : constant Eti_Error := Set_Field_Max (Fld, C_Int (Max));
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Maximum_Size;
-- |
-- |=====================================================================
-- | man page form_field_opts.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Set_Options (Fld : Field;
Options : Field_Option_Set)
is
function Set_Field_Opts (Fld : Field;
Opt : C_Int) return C_Int;
pragma Import (C, Set_Field_Opts, "set_field_opts");
Opt : constant C_Int := FOS_2_CInt (Options);
Res : Eti_Error;
begin
Res := Set_Field_Opts (Fld, Opt);
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Options;
-- |
-- |
-- |
procedure Switch_Options (Fld : Field;
Options : Field_Option_Set;
On : Boolean := True)
is
function Field_Opts_On (Fld : Field;
Opt : C_Int) return C_Int;
pragma Import (C, Field_Opts_On, "field_opts_on");
function Field_Opts_Off (Fld : Field;
Opt : C_Int) return C_Int;
pragma Import (C, Field_Opts_Off, "field_opts_off");
Err : Eti_Error;
Opt : constant C_Int := FOS_2_CInt (Options);
begin
if On then
Err := Field_Opts_On (Fld, Opt);
else
Err := Field_Opts_Off (Fld, Opt);
end if;
if Err /= E_Ok then
Eti_Exception (Err);
end if;
end Switch_Options;
-- |
-- |
-- |
procedure Get_Options (Fld : Field;
Options : out Field_Option_Set)
is
function Field_Opts (Fld : Field) return C_Int;
pragma Import (C, Field_Opts, "field_opts");
Res : constant C_Int := Field_Opts (Fld);
begin
Options := CInt_2_FOS (Res);
end Get_Options;
-- |
-- |
-- |
function Get_Options (Fld : Field := Null_Field)
return Field_Option_Set
is
Fos : Field_Option_Set;
begin
Get_Options (Fld, Fos);
return Fos;
end Get_Options;
-- |
-- |=====================================================================
-- | man page form_field_attributes.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Set_Foreground
(Fld : Field;
Fore : Character_Attribute_Set := Normal_Video;
Color : Color_Pair := Color_Pair'First)
is
function Set_Field_Fore (Fld : Field;
Attr : C_Chtype) return C_Int;
pragma Import (C, Set_Field_Fore, "set_field_fore");
Ch : constant Attributed_Character := (Ch => Character'First,
Color => Color,
Attr => Fore);
Res : constant Eti_Error :=
Set_Field_Fore (Fld, AttrChar_To_Chtype (Ch));
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Foreground;
-- |
-- |
-- |
procedure Foreground (Fld : Field;
Fore : out Character_Attribute_Set)
is
function Field_Fore (Fld : Field) return C_Chtype;
pragma Import (C, Field_Fore, "field_fore");
begin
Fore := Chtype_To_AttrChar (Field_Fore (Fld)).Attr;
end Foreground;
procedure Foreground (Fld : Field;
Fore : out Character_Attribute_Set;
Color : out Color_Pair)
is
function Field_Fore (Fld : Field) return C_Chtype;
pragma Import (C, Field_Fore, "field_fore");
begin
Fore := Chtype_To_AttrChar (Field_Fore (Fld)).Attr;
Color := Chtype_To_AttrChar (Field_Fore (Fld)).Color;
end Foreground;
-- |
-- |
-- |
procedure Set_Background
(Fld : Field;
Back : Character_Attribute_Set := Normal_Video;
Color : Color_Pair := Color_Pair'First)
is
function Set_Field_Back (Fld : Field;
Attr : C_Chtype) return C_Int;
pragma Import (C, Set_Field_Back, "set_field_back");
Ch : constant Attributed_Character := (Ch => Character'First,
Color => Color,
Attr => Back);
Res : constant Eti_Error :=
Set_Field_Back (Fld, AttrChar_To_Chtype (Ch));
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Background;
-- |
-- |
-- |
procedure Background (Fld : Field;
Back : out Character_Attribute_Set)
is
function Field_Back (Fld : Field) return C_Chtype;
pragma Import (C, Field_Back, "field_back");
begin
Back := Chtype_To_AttrChar (Field_Back (Fld)).Attr;
end Background;
procedure Background (Fld : Field;
Back : out Character_Attribute_Set;
Color : out Color_Pair)
is
function Field_Back (Fld : Field) return C_Chtype;
pragma Import (C, Field_Back, "field_back");
begin
Back := Chtype_To_AttrChar (Field_Back (Fld)).Attr;
Color := Chtype_To_AttrChar (Field_Back (Fld)).Color;
end Background;
-- |
-- |
-- |
procedure Set_Pad_Character (Fld : Field;
Pad : Character := Space)
is
function Set_Field_Pad (Fld : Field;
Ch : C_Int) return C_Int;
pragma Import (C, Set_Field_Pad, "set_field_pad");
Res : constant Eti_Error := Set_Field_Pad (Fld,
C_Int (Character'Pos (Pad)));
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Pad_Character;
-- |
-- |
-- |
procedure Pad_Character (Fld : Field;
Pad : out Character)
is
function Field_Pad (Fld : Field) return C_Int;
pragma Import (C, Field_Pad, "field_pad");
begin
Pad := Character'Val (Field_Pad (Fld));
end Pad_Character;
-- |
-- |=====================================================================
-- | man page form_field_info.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Info (Fld : Field;
Lines : out Line_Count;
Columns : out Column_Count;
First_Row : out Line_Position;
First_Column : out Column_Position;
Off_Screen : out Natural;
Additional_Buffers : out Buffer_Number)
is
type C_Int_Access is access all C_Int;
function Fld_Info (Fld : Field;
L, C, Fr, Fc, Os, Ab : C_Int_Access)
return C_Int;
pragma Import (C, Fld_Info, "field_info");
L, C, Fr, Fc, Os, Ab : aliased C_Int;
Res : constant Eti_Error := Fld_Info (Fld,
L'Access, C'Access,
Fr'Access, Fc'Access,
Os'Access, Ab'Access);
begin
if Res /= E_Ok then
Eti_Exception (Res);
else
Lines := Line_Count (L);
Columns := Column_Count (C);
First_Row := Line_Position (Fr);
First_Column := Column_Position (Fc);
Off_Screen := Natural (Os);
Additional_Buffers := Buffer_Number (Ab);
end if;
end Info;
-- |
-- |
-- |
procedure Dynamic_Info (Fld : Field;
Lines : out Line_Count;
Columns : out Column_Count;
Max : out Natural)
is
type C_Int_Access is access all C_Int;
function Dyn_Info (Fld : Field; L, C, M : C_Int_Access) return C_Int;
pragma Import (C, Dyn_Info, "dynamic_field_info");
L, C, M : aliased C_Int;
Res : constant Eti_Error := Dyn_Info (Fld,
L'Access, C'Access,
M'Access);
begin
if Res /= E_Ok then
Eti_Exception (Res);
else
Lines := Line_Count (L);
Columns := Column_Count (C);
Max := Natural (M);
end if;
end Dynamic_Info;
-- |
-- |=====================================================================
-- | man page form_win.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Set_Window (Frm : Form;
Win : Window)
is
function Set_Form_Win (Frm : Form;
Win : Window) return C_Int;
pragma Import (C, Set_Form_Win, "set_form_win");
Res : constant Eti_Error := Set_Form_Win (Frm, Win);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Window;
-- |
-- |
-- |
function Get_Window (Frm : Form) return Window
is
function Form_Win (Frm : Form) return Window;
pragma Import (C, Form_Win, "form_win");
W : constant Window := Form_Win (Frm);
begin
return W;
end Get_Window;
-- |
-- |
-- |
procedure Set_Sub_Window (Frm : Form;
Win : Window)
is
function Set_Form_Sub (Frm : Form;
Win : Window) return C_Int;
pragma Import (C, Set_Form_Sub, "set_form_sub");
Res : constant Eti_Error := Set_Form_Sub (Frm, Win);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Sub_Window;
-- |
-- |
-- |
function Get_Sub_Window (Frm : Form) return Window
is
function Form_Sub (Frm : Form) return Window;
pragma Import (C, Form_Sub, "form_sub");
W : constant Window := Form_Sub (Frm);
begin
return W;
end Get_Sub_Window;
-- |
-- |
-- |
procedure Scale (Frm : Form;
Lines : out Line_Count;
Columns : out Column_Count)
is
type C_Int_Access is access all C_Int;
function M_Scale (Frm : Form; Yp, Xp : C_Int_Access) return C_Int;
pragma Import (C, M_Scale, "scale_form");
X, Y : aliased C_Int;
Res : constant Eti_Error := M_Scale (Frm, Y'Access, X'Access);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
Lines := Line_Count (Y);
Columns := Column_Count (X);
end Scale;
-- |
-- |=====================================================================
-- | man page menu_hook.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Set_Field_Init_Hook (Frm : Form;
Proc : Form_Hook_Function)
is
function Set_Field_Init (Frm : Form;
Proc : Form_Hook_Function) return C_Int;
pragma Import (C, Set_Field_Init, "set_field_init");
Res : constant Eti_Error := Set_Field_Init (Frm, Proc);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Field_Init_Hook;
-- |
-- |
-- |
procedure Set_Field_Term_Hook (Frm : Form;
Proc : Form_Hook_Function)
is
function Set_Field_Term (Frm : Form;
Proc : Form_Hook_Function) return C_Int;
pragma Import (C, Set_Field_Term, "set_field_term");
Res : constant Eti_Error := Set_Field_Term (Frm, Proc);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Field_Term_Hook;
-- |
-- |
-- |
procedure Set_Form_Init_Hook (Frm : Form;
Proc : Form_Hook_Function)
is
function Set_Form_Init (Frm : Form;
Proc : Form_Hook_Function) return C_Int;
pragma Import (C, Set_Form_Init, "set_form_init");
Res : constant Eti_Error := Set_Form_Init (Frm, Proc);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Form_Init_Hook;
-- |
-- |
-- |
procedure Set_Form_Term_Hook (Frm : Form;
Proc : Form_Hook_Function)
is
function Set_Form_Term (Frm : Form;
Proc : Form_Hook_Function) return C_Int;
pragma Import (C, Set_Form_Term, "set_form_term");
Res : constant Eti_Error := Set_Form_Term (Frm, Proc);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Form_Term_Hook;
-- |
-- |=====================================================================
-- | man page form_fields.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Redefine (Frm : Form;
Flds : Field_Array_Access)
is
function Set_Frm_Fields (Frm : Form;
Items : System.Address) return C_Int;
pragma Import (C, Set_Frm_Fields, "set_form_fields");
Res : Eti_Error;
begin
pragma Assert (Flds (Flds'Last) = Null_Field);
if Flds (Flds'Last) /= Null_Field then
raise Form_Exception;
else
Res := Set_Frm_Fields (Frm, Flds (Flds'First)'Address);
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end if;
end Redefine;
-- |
-- |
-- |
function Fields (Frm : Form;
Index : Positive) return Field
is
use F_Array;
function C_Fields (Frm : Form) return Pointer;
pragma Import (C, C_Fields, "form_fields");
P : Pointer := C_Fields (Frm);
begin
if P = null or else Index > Field_Count (Frm) then
raise Form_Exception;
else
P := P + ptrdiff_t (C_Int (Index) - 1);
return P.all;
end if;
end Fields;
-- |
-- |
-- |
function Field_Count (Frm : Form) return Natural
is
function Count (Frm : Form) return C_Int;
pragma Import (C, Count, "field_count");
begin
return Natural (Count (Frm));
end Field_Count;
-- |
-- |
-- |
procedure Move (Fld : Field;
Line : Line_Position;
Column : Column_Position)
is
function Move (Fld : Field; L, C : C_Int) return C_Int;
pragma Import (C, Move, "move_field");
Res : constant Eti_Error := Move (Fld, C_Int (Line), C_Int (Column));
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Move;
-- |
-- |=====================================================================
-- | man page form_new.3x
-- |=====================================================================
-- |
-- |
-- |
function Create (Fields : Field_Array_Access) return Form
is
function NewForm (Fields : System.Address) return Form;
pragma Import (C, NewForm, "new_form");
M : Form;
begin
pragma Assert (Fields (Fields'Last) = Null_Field);
if Fields (Fields'Last) /= Null_Field then
raise Form_Exception;
else
M := NewForm (Fields (Fields'First)'Address);
if M = Null_Form then
raise Form_Exception;
end if;
return M;
end if;
end Create;
-- |
-- |
-- |
procedure Delete (Frm : in out Form)
is
function Free (Frm : Form) return C_Int;
pragma Import (C, Free, "free_form");
Res : constant Eti_Error := Free (Frm);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
Frm := Null_Form;
end Delete;
-- |
-- |=====================================================================
-- | man page form_opts.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Set_Options (Frm : Form;
Options : Form_Option_Set)
is
function Set_Form_Opts (Frm : Form;
Opt : C_Int) return C_Int;
pragma Import (C, Set_Form_Opts, "set_form_opts");
Opt : constant C_Int := FrmOS_2_CInt (Options);
Res : Eti_Error;
begin
Res := Set_Form_Opts (Frm, Opt);
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Options;
-- |
-- |
-- |
procedure Switch_Options (Frm : Form;
Options : Form_Option_Set;
On : Boolean := True)
is
function Form_Opts_On (Frm : Form;
Opt : C_Int) return C_Int;
pragma Import (C, Form_Opts_On, "form_opts_on");
function Form_Opts_Off (Frm : Form;
Opt : C_Int) return C_Int;
pragma Import (C, Form_Opts_Off, "form_opts_off");
Err : Eti_Error;
Opt : constant C_Int := FrmOS_2_CInt (Options);
begin
if On then
Err := Form_Opts_On (Frm, Opt);
else
Err := Form_Opts_Off (Frm, Opt);
end if;
if Err /= E_Ok then
Eti_Exception (Err);
end if;
end Switch_Options;
-- |
-- |
-- |
procedure Get_Options (Frm : Form;
Options : out Form_Option_Set)
is
function Form_Opts (Frm : Form) return C_Int;
pragma Import (C, Form_Opts, "form_opts");
Res : constant C_Int := Form_Opts (Frm);
begin
Options := CInt_2_FrmOS (Res);
end Get_Options;
-- |
-- |
-- |
function Get_Options (Frm : Form := Null_Form) return Form_Option_Set
is
Fos : Form_Option_Set;
begin
Get_Options (Frm, Fos);
return Fos;
end Get_Options;
-- |
-- |=====================================================================
-- | man page form_post.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Post (Frm : Form;
Post : Boolean := True)
is
function M_Post (Frm : Form) return C_Int;
pragma Import (C, M_Post, "post_form");
function M_Unpost (Frm : Form) return C_Int;
pragma Import (C, M_Unpost, "unpost_form");
Res : Eti_Error;
begin
if Post then
Res := M_Post (Frm);
else
Res := M_Unpost (Frm);
end if;
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Post;
-- |
-- |=====================================================================
-- | man page form_cursor.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Position_Cursor (Frm : Form)
is
function Pos_Form_Cursor (Frm : Form) return C_Int;
pragma Import (C, Pos_Form_Cursor, "pos_form_cursor");
Res : constant Eti_Error := Pos_Form_Cursor (Frm);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Position_Cursor;
-- |
-- |=====================================================================
-- | man page form_data.3x
-- |=====================================================================
-- |
-- |
-- |
function Data_Ahead (Frm : Form) return Boolean
is
function Ahead (Frm : Form) return C_Int;
pragma Import (C, Ahead, "data_ahead");
Res : constant C_Int := Ahead (Frm);
begin
if Res = Curses_False then
return False;
else
return True;
end if;
end Data_Ahead;
-- |
-- |
-- |
function Data_Behind (Frm : Form) return Boolean
is
function Behind (Frm : Form) return C_Int;
pragma Import (C, Behind, "data_behind");
Res : constant C_Int := Behind (Frm);
begin
if Res = Curses_False then
return False;
else
return True;
end if;
end Data_Behind;
-- |
-- |=====================================================================
-- | man page form_driver.3x
-- |=====================================================================
-- |
-- |
-- |
function Driver (Frm : Form;
Key : Key_Code) return Driver_Result
is
function Frm_Driver (Frm : Form; Key : C_Int) return C_Int;
pragma Import (C, Frm_Driver, "form_driver");
R : constant Eti_Error := Frm_Driver (Frm, C_Int (Key));
begin
if R /= E_Ok then
if R = E_Unknown_Command then
return Unknown_Request;
elsif R = E_Invalid_Field then
return Invalid_Field;
elsif R = E_Request_Denied then
return Request_Denied;
else
Eti_Exception (R);
return Form_Ok;
end if;
else
return Form_Ok;
end if;
end Driver;
-- |
-- |=====================================================================
-- | man page form_page.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Set_Current (Frm : Form;
Fld : Field)
is
function Set_Current_Fld (Frm : Form; Fld : Field) return C_Int;
pragma Import (C, Set_Current_Fld, "set_current_field");
Res : constant Eti_Error := Set_Current_Fld (Frm, Fld);
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Current;
-- |
-- |
-- |
function Current (Frm : Form) return Field
is
function Current_Fld (Frm : Form) return Field;
pragma Import (C, Current_Fld, "current_field");
Fld : constant Field := Current_Fld (Frm);
begin
if Fld = Null_Field then
raise Form_Exception;
end if;
return Fld;
end Current;
-- |
-- |
-- |
procedure Set_Page (Frm : Form;
Page : Page_Number := Page_Number'First)
is
function Set_Frm_Page (Frm : Form; Pg : C_Int) return C_Int;
pragma Import (C, Set_Frm_Page, "set_form_page");
Res : constant Eti_Error := Set_Frm_Page (Frm, C_Int (Page));
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_Page;
-- |
-- |
-- |
function Page (Frm : Form) return Page_Number
is
function Get_Page (Frm : Form) return C_Int;
pragma Import (C, Get_Page, "form_page");
P : constant C_Int := Get_Page (Frm);
begin
if P < 0 then
raise Form_Exception;
else
return Page_Number (P);
end if;
end Page;
function Get_Index (Fld : Field) return Positive
is
function Get_Fieldindex (Fld : Field) return C_Int;
pragma Import (C, Get_Fieldindex, "field_index");
Res : constant C_Int := Get_Fieldindex (Fld);
begin
if Res = Curses_Err then
raise Form_Exception;
end if;
return Positive (Natural (Res) + Positive'First);
end Get_Index;
-- |
-- |=====================================================================
-- | man page form_new_page.3x
-- |=====================================================================
-- |
-- |
-- |
procedure Set_New_Page (Fld : Field;
New_Page : Boolean := True)
is
function Set_Page (Fld : Field; Flg : C_Int) return C_Int;
pragma Import (C, Set_Page, "set_new_page");
Res : constant Eti_Error := Set_Page (Fld, Boolean'Pos (New_Page));
begin
if Res /= E_Ok then
Eti_Exception (Res);
end if;
end Set_New_Page;
-- |
-- |
-- |
function Is_New_Page (Fld : Field) return Boolean
is
function Is_New (Fld : Field) return C_Int;
pragma Import (C, Is_New, "new_page");
Res : constant C_Int := Is_New (Fld);
begin
if Res = Curses_False then
return False;
else
return True;
end if;
end Is_New_Page;
procedure Free (FA : in out Field_Array_Access;
Free_Fields : Boolean := False)
is
procedure Release is new Ada.Unchecked_Deallocation
(Field_Array, Field_Array_Access);
begin
if FA /= null and then Free_Fields then
for I in FA'First .. (FA'Last - 1) loop
if FA (I) /= Null_Field then
Delete (FA (I));
end if;
end loop;
end if;
Release (FA);
end Free;
-- |=====================================================================
function Default_Field_Options return Field_Option_Set
is
begin
return Get_Options (Null_Field);
end Default_Field_Options;
function Default_Form_Options return Form_Option_Set
is
begin
return Get_Options (Null_Form);
end Default_Form_Options;
end Terminal_Interface.Curses.Forms;