Base version of ncurses-5.7 library
diff --git a/Ada95/samples/sample-menu_demo.adb b/Ada95/samples/sample-menu_demo.adb
new file mode 100644
index 0000000..3864674
--- /dev/null
+++ b/Ada95/samples/sample-menu_demo.adb
@@ -0,0 +1,396 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                       GNAT ncurses Binding Samples                       --
+--                                                                          --
+--                              Sample.Menu_Demo                            --
+--                                                                          --
+--                                 B O D Y                                  --
+--                                                                          --
+------------------------------------------------------------------------------
+-- Copyright (c) 1998-2004,2008 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: 1.18 $
+--  $Date: 2008/07/26 18:48:30 $
+--  Binding Version 01.00
+------------------------------------------------------------------------------
+with Terminal_Interface.Curses; use Terminal_Interface.Curses;
+with Terminal_Interface.Curses.Panels; use Terminal_Interface.Curses.Panels;
+with Terminal_Interface.Curses.Menus; use Terminal_Interface.Curses.Menus;
+with Terminal_Interface.Curses.Menus.Menu_User_Data;
+with Terminal_Interface.Curses.Menus.Item_User_Data;
+
+with Sample.Manifest; use Sample.Manifest;
+with Sample.Function_Key_Setting; use Sample.Function_Key_Setting;
+with Sample.Menu_Demo.Handler;
+with Sample.Helpers; use Sample.Helpers;
+with Sample.Explanation; use Sample.Explanation;
+
+package body Sample.Menu_Demo is
+
+   package Spacing_Demo is
+      procedure Spacing_Test;
+   end Spacing_Demo;
+
+   package body Spacing_Demo is
+
+      procedure Spacing_Test
+      is
+         function My_Driver (M : Menu;
+                             K : Key_Code;
+                             P : Panel) return Boolean;
+
+         procedure Set_Option_Key;
+         procedure Set_Select_Key;
+         procedure Set_Description_Key;
+         procedure Set_Hide_Key;
+
+         package Mh is new Sample.Menu_Demo.Handler (My_Driver);
+
+         I : Item_Array_Access := new Item_Array'
+           (New_Item ("January",   "31 Days"),
+            New_Item ("February",  "28/29 Days"),
+            New_Item ("March",     "31 Days"),
+            New_Item ("April",     "30 Days"),
+            New_Item ("May",       "31 Days"),
+            New_Item ("June",      "30 Days"),
+            New_Item ("July",      "31 Days"),
+            New_Item ("August",    "31 Days"),
+            New_Item ("September", "30 Days"),
+            New_Item ("October",   "31 Days"),
+            New_Item ("November",  "30 Days"),
+            New_Item ("December",  "31 Days"),
+            Null_Item);
+
+         M : Menu   := New_Menu (I);
+         Flip_State : Boolean := True;
+         Hide_Long  : Boolean := False;
+
+         type Format_Code is (Four_By_1, Four_By_2, Four_By_3);
+         type Operations  is (Flip, Reorder, Reformat, Reselect, Describe);
+
+         type Change is array (Operations) of Boolean;
+         pragma Pack (Change);
+         No_Change : constant Change := Change'(others => False);
+
+         Current_Format : Format_Code := Four_By_1;
+         To_Change : Change := No_Change;
+
+         function My_Driver (M : Menu;
+                             K : Key_Code;
+                             P : Panel) return Boolean
+         is
+         begin
+            if M = Null_Menu then
+               raise Menu_Exception;
+            end if;
+            if P = Null_Panel then
+               raise Panel_Exception;
+            end if;
+            To_Change := No_Change;
+            if K in User_Key_Code'Range then
+               if K = QUIT then
+                  return True;
+               end if;
+            end if;
+            if K in Special_Key_Code'Range then
+               case K is
+                  when Key_F4 =>
+                     To_Change (Flip) := True;
+                     return True;
+                  when Key_F5 =>
+                     To_Change (Reformat)  := True;
+                     Current_Format := Four_By_1;
+                     return True;
+                  when Key_F6 =>
+                     To_Change (Reformat)  := True;
+                     Current_Format := Four_By_2;
+                     return True;
+                  when Key_F7 =>
+                     To_Change (Reformat)  := True;
+                     Current_Format := Four_By_3;
+                     return True;
+                  when Key_F8 =>
+                     To_Change (Reorder) := True;
+                     return True;
+                  when Key_F9 =>
+                     To_Change (Reselect) := True;
+                     return True;
+                  when Key_F10 =>
+                     if Current_Format /= Four_By_3 then
+                        To_Change (Describe) := True;
+                        return True;
+                     else
+                        return False;
+                     end if;
+                  when Key_F11 =>
+                     Hide_Long := not Hide_Long;
+                     declare
+                        O : Item_Option_Set;
+                     begin
+                        for J in I'Range loop
+                           Get_Options (I (J), O);
+                           O.Selectable := True;
+                           if Hide_Long then
+                              case J is
+                                 when 1 | 3 | 5 | 7 | 8 | 10 | 12 =>
+                                    O.Selectable := False;
+                                 when others => null;
+                              end case;
+                           end if;
+                           Set_Options (I (J), O);
+                        end loop;
+                     end;
+                     return False;
+                  when others => null;
+               end case;
+            end if;
+            return False;
+         end My_Driver;
+
+         procedure Set_Option_Key
+         is
+            O : Menu_Option_Set;
+         begin
+            if Current_Format = Four_By_1 then
+               Set_Soft_Label_Key (8, "");
+            else
+               Get_Options (M, O);
+               if O.Row_Major_Order then
+                  Set_Soft_Label_Key (8, "O-Col");
+               else
+                  Set_Soft_Label_Key (8, "O-Row");
+               end if;
+            end if;
+            Refresh_Soft_Label_Keys_Without_Update;
+         end Set_Option_Key;
+
+         procedure Set_Select_Key
+         is
+            O : Menu_Option_Set;
+         begin
+            Get_Options (M, O);
+            if O.One_Valued then
+               Set_Soft_Label_Key (9, "Multi");
+            else
+               Set_Soft_Label_Key (9, "Singl");
+            end if;
+            Refresh_Soft_Label_Keys_Without_Update;
+         end Set_Select_Key;
+
+         procedure Set_Description_Key
+         is
+            O : Menu_Option_Set;
+         begin
+            if Current_Format = Four_By_3 then
+               Set_Soft_Label_Key (10, "");
+            else
+               Get_Options (M, O);
+               if O.Show_Descriptions then
+                  Set_Soft_Label_Key (10, "-Desc");
+               else
+                  Set_Soft_Label_Key (10, "+Desc");
+               end if;
+            end if;
+            Refresh_Soft_Label_Keys_Without_Update;
+         end Set_Description_Key;
+
+         procedure Set_Hide_Key
+         is
+         begin
+            if Hide_Long then
+               Set_Soft_Label_Key (11, "Enab");
+            else
+               Set_Soft_Label_Key (11, "Disab");
+            end if;
+            Refresh_Soft_Label_Keys_Without_Update;
+         end Set_Hide_Key;
+
+      begin
+         Push_Environment ("MENU01");
+         Notepad ("MENU-PAD01");
+         Default_Labels;
+         Set_Soft_Label_Key (4, "Flip");
+         Set_Soft_Label_Key (5, "4x1");
+         Set_Soft_Label_Key (6, "4x2");
+         Set_Soft_Label_Key (7, "4x3");
+         Set_Option_Key;
+         Set_Select_Key;
+         Set_Description_Key;
+         Set_Hide_Key;
+
+         Set_Format (M, 4, 1);
+         loop
+            Mh.Drive_Me (M);
+            exit when To_Change = No_Change;
+            if To_Change (Flip) then
+               if Flip_State then
+                  Flip_State := False;
+                  Set_Spacing (M, 3, 2, 0);
+               else
+                  Flip_State := True;
+                  Set_Spacing (M);
+               end if;
+            elsif To_Change (Reformat) then
+               case Current_Format is
+                  when Four_By_1 => Set_Format (M, 4, 1);
+                  when Four_By_2 => Set_Format (M, 4, 2);
+                  when Four_By_3 =>
+                     declare
+                        O : Menu_Option_Set;
+                     begin
+                        Get_Options (M, O);
+                        O.Show_Descriptions := False;
+                        Set_Options (M, O);
+                        Set_Format (M, 4, 3);
+                     end;
+               end case;
+               Set_Option_Key;
+               Set_Description_Key;
+            elsif To_Change (Reorder) then
+               declare
+                  O : Menu_Option_Set;
+               begin
+                  Get_Options (M, O);
+                  O.Row_Major_Order := not O.Row_Major_Order;
+                  Set_Options (M, O);
+                  Set_Option_Key;
+               end;
+            elsif To_Change (Reselect) then
+               declare
+                  O : Menu_Option_Set;
+               begin
+                  Get_Options (M, O);
+                  O.One_Valued := not O.One_Valued;
+                  Set_Options (M, O);
+                  Set_Select_Key;
+               end;
+            elsif To_Change (Describe) then
+               declare
+                  O : Menu_Option_Set;
+               begin
+                  Get_Options (M, O);
+                  O.Show_Descriptions := not O.Show_Descriptions;
+                  Set_Options (M, O);
+                  Set_Description_Key;
+               end;
+            else
+               null;
+            end if;
+         end loop;
+         Set_Spacing (M);
+
+         Pop_Environment;
+         pragma Assert (Get_Index (Items (M, 1)) = Get_Index (I (1)));
+         Delete (M);
+         Free (I, True);
+      end Spacing_Test;
+   end Spacing_Demo;
+
+   procedure Demo
+   is
+      --  We use this datatype only to test the instantiation of
+      --  the Menu_User_Data generic package. No functionality
+      --  behind it.
+      type User_Data is new Integer;
+      type User_Data_Access is access User_Data;
+
+      --  Those packages are only instantiated to test the usability.
+      --  No real functionality is shown in the demo.
+      package MUD is new Menu_User_Data (User_Data, User_Data_Access);
+      package IUD is new Item_User_Data (User_Data, User_Data_Access);
+
+      function My_Driver (M : Menu;
+                          K : Key_Code;
+                          P : Panel) return Boolean;
+
+      package Mh is new Sample.Menu_Demo.Handler (My_Driver);
+
+      Itm : Item_Array_Access := new Item_Array'
+        (New_Item ("Menu Layout Options"),
+         New_Item ("Demo of Hook functions"),
+         Null_Item);
+      M : Menu := New_Menu (Itm);
+
+      U1 : constant User_Data_Access := new User_Data'(4711);
+      U2 : User_Data_Access;
+      U3 : constant User_Data_Access := new User_Data'(4712);
+      U4 : User_Data_Access;
+
+      function My_Driver (M : Menu;
+                          K : Key_Code;
+                          P : Panel) return Boolean
+      is
+         Idx   : constant Positive := Get_Index (Current (M));
+      begin
+         if K in User_Key_Code'Range then
+            if K = QUIT then
+               return True;
+            elsif K = SELECT_ITEM then
+               if Idx in Itm'Range then
+                  Hide (P);
+                  Update_Panels;
+               end if;
+               case Idx is
+                  when 1 => Spacing_Demo.Spacing_Test;
+                  when others => Not_Implemented;
+               end case;
+               if Idx in Itm'Range then
+                  Top (P);
+                  Show (P);
+                  Update_Panels;
+                  Update_Screen;
+               end if;
+            end if;
+         end if;
+         return False;
+      end My_Driver;
+   begin
+      Push_Environment ("MENU00");
+      Notepad ("MENU-PAD00");
+      Default_Labels;
+      Refresh_Soft_Label_Keys_Without_Update;
+      Set_Pad_Character (M, '|');
+
+      MUD.Set_User_Data (M, U1);
+      IUD.Set_User_Data (Itm (1), U3);
+
+      Mh.Drive_Me (M);
+
+      MUD.Get_User_Data (M, U2);
+      pragma Assert (U1 = U2 and U1.all = 4711);
+
+      IUD.Get_User_Data (Itm (1), U4);
+      pragma Assert (U3 = U4 and U3.all = 4712);
+
+      Pop_Environment;
+      Delete (M);
+      Free (Itm, True);
+   end Demo;
+
+end Sample.Menu_Demo;