1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
5 -- Sample.Keyboard_Handler --
9 ------------------------------------------------------------------------------
10 -- Copyright (c) 1998 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 <Juergen.Pfeifer@T-Online.de> 1996
39 -- Binding Version 00.93
40 ------------------------------------------------------------------------------
41 with Ada.Strings; use Ada.Strings;
42 with Ada.Strings.Fixed; use Ada.Strings.Fixed;
43 with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants;
44 with Ada.Characters.Latin_1; use Ada.Characters.Latin_1;
45 with Ada.Characters.Handling; use Ada.Characters.Handling;
47 with Terminal_Interface.Curses.Panels; use Terminal_Interface.Curses.Panels;
48 with Terminal_Interface.Curses.Forms; use Terminal_Interface.Curses.Forms;
49 with Terminal_Interface.Curses.Forms.Field_Types.Enumeration;
50 use Terminal_Interface.Curses.Forms.Field_Types.Enumeration;
52 with Sample.Header_Handler; use Sample.Header_Handler;
53 with Sample.Form_Demo.Aux; use Sample.Form_Demo.Aux;
54 with Sample.Manifest; use Sample.Manifest;
55 with Sample.Form_Demo.Handler;
57 -- This package contains a centralized keyboard handler used throughout
58 -- this example. The handler establishes a timeout mechanism that provides
59 -- periodical updates of the common header lines used in this example.
62 package body Sample.Keyboard_Handler is
64 In_Command : Boolean := False;
66 function Get_Key (Win : Window := Standard_Window) return Real_Key_Code
70 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 C in User_Key_Code'Range and then C = QUIT then
99 if Driver (F, F_Validate_Field) = Form_Ok then
103 elsif C in Normal_Key_Code'Range then
104 Ch := Character'Val (C);
105 if (Ch = LF or else Ch = CR) then
106 if Driver (F, F_Validate_Field) = Form_Ok then
108 Buffer : String (1 .. Positive (Columns - 11));
109 Cmdc : String (1 .. 8);
111 Get_Buffer (Fld => FA (2), Str => Buffer);
113 if Buffer (1) /= ' ' then
114 Cmdc := To_Upper (Buffer (Cmdc'Range));
115 for I in Labels'Range loop
116 if Cmdc = Labels (I) then
117 K := Function_Key_Code
118 (Function_Key_Number (I));
133 for I in Label_Number'Range loop
134 Get_Soft_Label_Key (I, Labels (I));
135 Trim (Labels (I), Left);
136 Translate (Labels (I), Upper_Case_Map);
137 if Labels (I) (1) /= ' ' then
141 if N > 0 then -- some labels were really set
143 Enum_Info : Enumeration_Info (N);
144 Enum_Field : Enumeration_Field;
145 J : Positive := Enum_Info.Names'First;
147 Frm : Form := Create (FA);
150 for I in Label_Number'Range loop
151 if Labels (I) (1) /= ' ' then
152 Enum_Info.Names (J) := new String'(Labels (I));
156 Enum_Field := Create (Enum_Info, True);
157 Set_Field_Type (FA (2), Enum_Field);
158 Set_Background (FA (2), Normal_Video);
160 Fh.Drive_Me (Frm, Lines - 3, 0);
162 Update_Panels; Update_Screen;
171 Set_Timeout_Mode (Win, Delayed, 30000);
173 K := Get_Keystroke (Win);
174 if K = Key_None then -- a timeout occured
175 Update_Header_Window;
176 elsif K = 3 and then not In_Command then -- CTRL-C
178 exit when K /= Key_None;
186 procedure Init_Keyboard_Handler is
189 end Init_Keyboard_Handler;
191 end Sample.Keyboard_Handler;