release/src/router/libncurses/Ada95/samples/sample-curses_demo.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                       GNAT ncurses Binding Samples                       --
   4 --                                                                          --
   5 --                            Sample.Curses_Demo                            --
   6 --                                                                          --
   7 --                                 B O D Y                                  --
   8 --                                                                          --
   9 ------------------------------------------------------------------------------
  10 -- Copyright (c) 1998-2004,2011 Free Software Foundation, Inc.              --
  11 --                                                                          --
  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:                 --
  19 --                                                                          --
  20 -- The above copyright notice and this permission notice shall be included  --
  21 -- in all copies or substantial portions of the Software.                   --
  22 --                                                                          --
  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.                               --
  30 --                                                                          --
  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       --
  34 -- authorization.                                                           --
  35 ------------------------------------------------------------------------------
  36 --  Author:  Juergen Pfeifer, 1996
  37 --  Version Control
  38 --  $Revision: 1.17 $
  39 --  $Date: 2011/03/23 00:29:04 $
  40 --  Binding Version 01.00
  41 ------------------------------------------------------------------------------
  42 with Terminal_Interface.Curses; use Terminal_Interface.Curses;
  43 with Terminal_Interface.Curses.Menus; use Terminal_Interface.Curses.Menus;
  44 with Terminal_Interface.Curses.Mouse;  use Terminal_Interface.Curses.Mouse;
  45 with Terminal_Interface.Curses.Panels;  use Terminal_Interface.Curses.Panels;
  46 with Terminal_Interface.Curses.Panels.User_Data;
  47
  48 with Sample.Manifest; use Sample.Manifest;
  49 with Sample.Helpers; use Sample.Helpers;
  50 with Sample.Function_Key_Setting; use Sample.Function_Key_Setting;
  51
  52 with Sample.Explanation; use Sample.Explanation;
  53
  54 with Sample.Menu_Demo.Handler;
  55 with Sample.Curses_Demo.Mouse;
  56 with Sample.Curses_Demo.Attributes;
  57
  58 package body Sample.Curses_Demo is
  59
  60    type User_Data is new Integer;
  61    type User_Data_Access is access all User_Data;
  62    package PUD is new Panels.User_Data (User_Data, User_Data_Access);
  63    --  We use above instantiation of the generic User_Data package to
  64    --  demonstrate and test the use of the user data mechanism.
  65
  66    procedure Demo
  67    is
  68       function My_Driver (M : Menu;
  69                           K : Key_Code;
  70                           Pan : Panel) return Boolean;
  71       package Mh is new Sample.Menu_Demo.Handler (My_Driver);
  72
  73       Itm : Item_Array_Access := new Item_Array'
  74         (New_Item ("Attributes Demo"),
  75          New_Item ("Mouse Demo"),
  76          Null_Item);
  77       M  : Menu := New_Menu (Itm);
  78       U1 : constant User_Data_Access := new User_Data'(4711);
  79       U2 : User_Data_Access;
  80
  81       function My_Driver (M : Menu;
  82                           K : Key_Code;
  83                           Pan : Panel) return Boolean
  84       is
  85          Idx : constant Positive := Get_Index (Current (M));
  86          Result : Boolean := False;
  87       begin
  88          PUD.Set_User_Data (Pan, U1); --  set some user data, just for fun
  89          if K in User_Key_Code'Range then
  90             if K = QUIT then
  91                Result := True;
  92             elsif K = SELECT_ITEM then
  93                if Idx in Itm'Range then
  94                   Hide (Pan);
  95                   Update_Panels;
  96                end if;
  97                case Idx is
  98                   when 1 => Sample.Curses_Demo.Attributes.Demo;
  99                   when 2 => Sample.Curses_Demo.Mouse.Demo;
 100                   when others => Not_Implemented;
 101                end case;
 102                if Idx in Itm'Range then
 103                   Top (Pan);
 104                   Show (Pan);
 105                   Update_Panels;
 106                   Update_Screen;
 107                end if;
 108             end if;
 109          end if;
 110          PUD.Get_User_Data (Pan, U2); --  get the user data
 111          pragma Assert (U1.all = U2.all and then U1 = U2);
 112          return Result;
 113       end My_Driver;
 114
 115    begin
 116
 117       if (1 + Item_Count (M)) /= Itm'Length then
 118          raise Constraint_Error;
 119       end if;
 120
 121       if not Has_Mouse then
 122          declare
 123             O : Item_Option_Set;
 124          begin
 125             Get_Options (Itm.all (2), O);
 126             O.Selectable := False;
 127             Set_Options (Itm.all (2), O);
 128          end;
 129       end if;
 130
 131       Push_Environment ("CURSES00");
 132       Notepad ("CURSES-PAD00");
 133       Default_Labels;
 134       Refresh_Soft_Label_Keys_Without_Update;
 135
 136       Mh.Drive_Me (M, " Demo ");
 137       Pop_Environment;
 138
 139       Delete (M);
 140       Free (Itm, True);
 141    end Demo;
 142
 143 end Sample.Curses_Demo;