1997-05-15 12:00:00 +08:00
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------------------------------------------------------------------------------
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-- --
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-- GNAT ncurses Binding Samples --
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-- --
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-- Sample.Keyboard_Handler --
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-- --
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-- B O D Y --
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-- --
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1998-03-01 12:21:12 +08:00
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------------------------------------------------------------------------------
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-- Copyright (c) 1998 Free Software Foundation, Inc. --
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-- --
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-- Permission is hereby granted, free of charge, to any person obtaining a --
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-- copy of this software and associated documentation files (the --
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-- "Software"), to deal in the Software without restriction, including --
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-- without limitation the rights to use, copy, modify, merge, publish, --
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-- distribute, distribute with modifications, sublicense, and/or sell --
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-- copies of the Software, and to permit persons to whom the Software is --
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-- furnished to do so, subject to the following conditions: --
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1997-05-15 12:00:00 +08:00
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-- --
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1998-03-01 12:21:12 +08:00
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-- The above copyright notice and this permission notice shall be included --
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-- in all copies or substantial portions of the Software. --
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1997-05-15 12:00:00 +08:00
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-- --
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1998-03-01 12:21:12 +08:00
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-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
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-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
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-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
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-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
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-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
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-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
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-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
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1997-05-15 12:00:00 +08:00
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-- --
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1998-03-01 12:21:12 +08:00
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-- Except as contained in this notice, the name(s) of the above copyright --
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-- holders shall not be used in advertising or otherwise to promote the --
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-- sale, use or other dealings in this Software without prior written --
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-- authorization. --
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1997-05-15 12:00:00 +08:00
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------------------------------------------------------------------------------
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1999-10-24 12:32:42 +08:00
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-- Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1996
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1997-05-15 12:00:00 +08:00
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-- Version Control
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1999-10-24 12:32:42 +08:00
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-- $Revision: 1.7 $
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-- Binding Version 01.00
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1997-05-15 12:00:00 +08:00
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------------------------------------------------------------------------------
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with Ada.Strings; use Ada.Strings;
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with Ada.Strings.Fixed; use Ada.Strings.Fixed;
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with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants;
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with Ada.Characters.Latin_1; use Ada.Characters.Latin_1;
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1998-03-01 12:21:12 +08:00
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with Ada.Characters.Handling; use Ada.Characters.Handling;
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1997-05-15 12:00:00 +08:00
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with Terminal_Interface.Curses.Panels; use Terminal_Interface.Curses.Panels;
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with Terminal_Interface.Curses.Forms; use Terminal_Interface.Curses.Forms;
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1998-03-01 12:21:12 +08:00
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with Terminal_Interface.Curses.Forms.Field_Types.Enumeration;
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use Terminal_Interface.Curses.Forms.Field_Types.Enumeration;
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1997-05-15 12:00:00 +08:00
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with Sample.Header_Handler; use Sample.Header_Handler;
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with Sample.Form_Demo.Aux; use Sample.Form_Demo.Aux;
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with Sample.Manifest; use Sample.Manifest;
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with Sample.Form_Demo.Handler;
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-- This package contains a centralized keyboard handler used throughout
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-- this example. The handler establishes a timeout mechanism that provides
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-- periodical updates of the common header lines used in this example.
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--
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package body Sample.Keyboard_Handler is
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In_Command : Boolean := False;
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function Get_Key (Win : Window := Standard_Window) return Real_Key_Code
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is
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K : Real_Key_Code;
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function Command return Real_Key_Code;
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function Command return Real_Key_Code
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is
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function My_Driver (F : Form;
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C : Key_Code;
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P : Panel) return Boolean;
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package Fh is new Sample.Form_Demo.Handler (My_Driver);
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type Label_Array is array (Label_Number) of String (1 .. 8);
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Labels : Label_Array;
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1998-03-01 12:21:12 +08:00
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FA : Field_Array_Access := new Field_Array'
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(Make (0, 0, "Command:"),
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Make (Top => 0, Left => 9, Width => Columns - 11),
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Null_Field);
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1997-05-15 12:00:00 +08:00
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K : Real_Key_Code := Key_None;
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N : Natural := 0;
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function My_Driver (F : Form;
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C : Key_Code;
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P : Panel) return Boolean
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is
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Ch : Character;
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begin
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if C in User_Key_Code'Range and then C = QUIT then
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if Driver (F, F_Validate_Field) = Form_Ok then
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K := Key_None;
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return True;
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end if;
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elsif C in Normal_Key_Code'Range then
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Ch := Character'Val (C);
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if (Ch = LF or else Ch = CR) then
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if Driver (F, F_Validate_Field) = Form_Ok then
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declare
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Buffer : String (1 .. Positive (Columns - 11));
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Cmdc : String (1 .. 8);
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begin
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Get_Buffer (Fld => FA (2), Str => Buffer);
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Trim (Buffer, Left);
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if Buffer (1) /= ' ' then
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1998-03-01 12:21:12 +08:00
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Cmdc := To_Upper (Buffer (Cmdc'Range));
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1997-05-15 12:00:00 +08:00
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for I in Labels'Range loop
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if Cmdc = Labels (I) then
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K := Function_Key_Code
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(Function_Key_Number (I));
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exit;
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end if;
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end loop;
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end if;
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return True;
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end;
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end if;
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end if;
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end if;
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return False;
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end My_Driver;
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begin
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In_Command := True;
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for I in Label_Number'Range loop
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Get_Soft_Label_Key (I, Labels (I));
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Trim (Labels (I), Left);
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Translate (Labels (I), Upper_Case_Map);
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if Labels (I) (1) /= ' ' then
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N := N + 1;
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end if;
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end loop;
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if N > 0 then -- some labels were really set
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declare
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Enum_Info : Enumeration_Info (N);
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Enum_Field : Enumeration_Field;
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J : Positive := Enum_Info.Names'First;
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Frm : Form := Create (FA);
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begin
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for I in Label_Number'Range loop
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if Labels (I) (1) /= ' ' then
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Enum_Info.Names (J) := new String'(Labels (I));
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J := J + 1;
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end if;
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end loop;
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Enum_Field := Create (Enum_Info, True);
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1998-03-01 12:21:12 +08:00
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Set_Field_Type (FA (2), Enum_Field);
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1997-05-15 12:00:00 +08:00
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Set_Background (FA (2), Normal_Video);
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Fh.Drive_Me (Frm, Lines - 3, 0);
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Delete (Frm);
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Update_Panels; Update_Screen;
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end;
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end if;
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1998-03-01 12:21:12 +08:00
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Free (FA, True);
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1997-05-15 12:00:00 +08:00
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In_Command := False;
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return K;
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end Command;
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begin
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Set_Timeout_Mode (Win, Delayed, 30000);
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loop
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K := Get_Keystroke (Win);
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if K = Key_None then -- a timeout occured
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Update_Header_Window;
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elsif K = 3 and then not In_Command then -- CTRL-C
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K := Command;
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exit when K /= Key_None;
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else
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exit;
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end if;
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end loop;
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return K;
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end Get_Key;
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procedure Init_Keyboard_Handler is
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begin
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null;
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end Init_Keyboard_Handler;
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end Sample.Keyboard_Handler;
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