| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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; |
