1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
5 -- Sample.Keyboard_Handler --
9 ------------------------------------------------------------------------------
10 -- Copyright (c) 1998-2004,2006 Free Software Foundation, Inc. --
12 -- Permission is hereby granted, free of charge, to any person obtaining a --
13 -- copy of this software and associated documentation files (the --
14 -- "Software"), to deal in the Software without restriction, including --
15 -- without limitation the rights to use, copy, modify, merge, publish, --
16 -- distribute, distribute with modifications, sublicense, and/or sell --
17 -- copies of the Software, and to permit persons to whom the Software is --
18 -- furnished to do so, subject to the following conditions: --
20 -- The above copyright notice and this permission notice shall be included --
21 -- in all copies or substantial portions of the Software. --
23 -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
24 -- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
25 -- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
26 -- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
27 -- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
28 -- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
29 -- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
31 -- Except as contained in this notice, the name(s) of the above copyright --
32 -- holders shall not be used in advertising or otherwise to promote the --
33 -- sale, use or other dealings in this Software without prior written --
35 ------------------------------------------------------------------------------
36 -- Author: Juergen Pfeifer, 1996
39 -- $Date: 2006/06/25 14:30:22 $
40 -- Binding Version 01.00
41 ------------------------------------------------------------------------------
42 with Ada.Strings; use Ada.Strings;
43 with Ada.Strings.Fixed; use Ada.Strings.Fixed;
44 with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants;
45 with Ada.Characters.Latin_1; use Ada.Characters.Latin_1;
46 with Ada.Characters.Handling; use Ada.Characters.Handling;
48 with Terminal_Interface.Curses.Panels; use Terminal_Interface.Curses.Panels;
49 with Terminal_Interface.Curses.Forms; use Terminal_Interface.Curses.Forms;
50 with Terminal_Interface.Curses.Forms.Field_Types.Enumeration;
51 use Terminal_Interface.Curses.Forms.Field_Types.Enumeration;
53 with Sample.Header_Handler; use Sample.Header_Handler;
54 with Sample.Form_Demo.Aux; use Sample.Form_Demo.Aux;
55 with Sample.Manifest; use Sample.Manifest;
56 with Sample.Form_Demo.Handler;
58 -- This package contains a centralized keyboard handler used throughout
59 -- this example. The handler establishes a timeout mechanism that provides
60 -- periodical updates of the common header lines used in this example.
63 package body Sample.Keyboard_Handler is
65 In_Command : Boolean := False;
67 function Get_Key (Win : Window := Standard_Window) return Real_Key_Code
71 function Command return Real_Key_Code;
73 function Command return Real_Key_Code
75 function My_Driver (F : Form;
77 P : Panel) return Boolean;
78 package Fh is new Sample.Form_Demo.Handler (My_Driver);
80 type Label_Array is array (Label_Number) of String (1 .. 8);
84 FA : Field_Array_Access := new Field_Array'
85 (Make (0, 0, "Command:"),
86 Make (Top => 0, Left => 9, Width => Columns - 11),
89 K : Real_Key_Code := Key_None;
92 function My_Driver (F : Form;
94 P : Panel) return Boolean
98 if P = Null_Panel then
99 raise Panel_Exception;
101 if C in User_Key_Code'Range and then C = QUIT then
102 if Driver (F, F_Validate_Field) = Form_Ok then
106 elsif C in Normal_Key_Code'Range then
107 Ch := Character'Val (C);
108 if Ch = LF or else Ch = CR then
109 if Driver (F, F_Validate_Field) = Form_Ok then
111 Buffer : String (1 .. Positive (Columns - 11));
112 Cmdc : String (1 .. 8);
114 Get_Buffer (Fld => FA (2), Str => Buffer);
116 if Buffer (1) /= ' ' then
117 Cmdc := To_Upper (Buffer (Cmdc'Range));
118 for I in Labels'Range loop
119 if Cmdc = Labels (I) then
120 K := Function_Key_Code
121 (Function_Key_Number (I));
136 for I in Label_Number'Range loop
137 Get_Soft_Label_Key (I, Labels (I));
138 Trim (Labels (I), Left);
139 Translate (Labels (I), Upper_Case_Map);
140 if Labels (I) (1) /= ' ' then
144 if N > 0 then -- some labels were really set
146 Enum_Info : Enumeration_Info (N);
147 Enum_Field : Enumeration_Field;
148 J : Positive := Enum_Info.Names'First;
150 Frm : Form := Create (FA);
153 for I in Label_Number'Range loop
154 if Labels (I) (1) /= ' ' then
155 Enum_Info.Names (J) := new String'(Labels (I));
159 Enum_Field := Create (Enum_Info, True);
160 Set_Field_Type (FA (2), Enum_Field);
161 Set_Background (FA (2), Normal_Video);
163 Fh.Drive_Me (Frm, Lines - 3, 0);
165 Update_Panels; Update_Screen;
174 Set_Timeout_Mode (Win, Delayed, 30000);
176 K := Get_Keystroke (Win);
177 if K = Key_None then -- a timeout occured
178 Update_Header_Window;
179 elsif K = 3 and then not In_Command then -- CTRL-C
181 exit when K /= Key_None;
189 procedure Init_Keyboard_Handler is
192 end Init_Keyboard_Handler;
194 end Sample.Keyboard_Handler;