| Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 1 | ------------------------------------------------------------------------------ |
| 2 | -- -- |
| 3 | -- GNAT ncurses Binding -- |
| 4 | -- -- |
| 5 | -- Terminal_Interface.Curses.Menus -- |
| 6 | -- -- |
| 7 | -- B O D Y -- |
| 8 | -- -- |
| 9 | ------------------------------------------------------------------------------ |
| 10 | -- Copyright (c) 1998-2004,2008 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: 1.26 $ |
| 39 | -- $Date: 2008/07/26 18:50:58 $ |
| 40 | -- Binding Version 01.00 |
| 41 | ------------------------------------------------------------------------------ |
| 42 | with Ada.Unchecked_Deallocation; |
| 43 | with Terminal_Interface.Curses.Aux; use Terminal_Interface.Curses.Aux; |
| 44 | |
| 45 | with Interfaces.C; use Interfaces.C; |
| 46 | with Interfaces.C.Strings; use Interfaces.C.Strings; |
| 47 | with Interfaces.C.Pointers; |
| 48 | |
| 49 | with Ada.Unchecked_Conversion; |
| 50 | |
| 51 | package body Terminal_Interface.Curses.Menus is |
| 52 | |
| 53 | type C_Item_Array is array (Natural range <>) of aliased Item; |
| 54 | package I_Array is new |
| 55 | Interfaces.C.Pointers (Natural, Item, C_Item_Array, Null_Item); |
| 56 | |
| 57 | use type System.Bit_Order; |
| 58 | subtype chars_ptr is Interfaces.C.Strings.chars_ptr; |
| 59 | |
| 60 | function MOS_2_CInt is new |
| 61 | Ada.Unchecked_Conversion (Menu_Option_Set, |
| 62 | C_Int); |
| 63 | |
| 64 | function CInt_2_MOS is new |
| 65 | Ada.Unchecked_Conversion (C_Int, |
| 66 | Menu_Option_Set); |
| 67 | |
| 68 | function IOS_2_CInt is new |
| 69 | Ada.Unchecked_Conversion (Item_Option_Set, |
| 70 | C_Int); |
| 71 | |
| 72 | function CInt_2_IOS is new |
| 73 | Ada.Unchecked_Conversion (C_Int, |
| 74 | Item_Option_Set); |
| 75 | |
| 76 | ------------------------------------------------------------------------------ |
| 77 | procedure Request_Name (Key : in Menu_Request_Code; |
| 78 | Name : out String) |
| 79 | is |
| 80 | function Request_Name (Key : C_Int) return chars_ptr; |
| 81 | pragma Import (C, Request_Name, "menu_request_name"); |
| 82 | begin |
| 83 | Fill_String (Request_Name (C_Int (Key)), Name); |
| 84 | end Request_Name; |
| 85 | |
| 86 | function Request_Name (Key : Menu_Request_Code) return String |
| 87 | is |
| 88 | function Request_Name (Key : C_Int) return chars_ptr; |
| 89 | pragma Import (C, Request_Name, "menu_request_name"); |
| 90 | begin |
| 91 | return Fill_String (Request_Name (C_Int (Key))); |
| 92 | end Request_Name; |
| 93 | |
| 94 | function Create (Name : String; |
| 95 | Description : String := "") return Item |
| 96 | is |
| 97 | type Char_Ptr is access all Interfaces.C.char; |
| 98 | function Newitem (Name, Desc : Char_Ptr) return Item; |
| 99 | pragma Import (C, Newitem, "new_item"); |
| 100 | |
| 101 | type Name_String is new char_array (0 .. Name'Length); |
| 102 | type Name_String_Ptr is access Name_String; |
| 103 | pragma Controlled (Name_String_Ptr); |
| 104 | |
| 105 | type Desc_String is new char_array (0 .. Description'Length); |
| 106 | type Desc_String_Ptr is access Desc_String; |
| 107 | pragma Controlled (Desc_String_Ptr); |
| 108 | |
| 109 | Name_Str : constant Name_String_Ptr := new Name_String; |
| 110 | Desc_Str : constant Desc_String_Ptr := new Desc_String; |
| 111 | Name_Len, Desc_Len : size_t; |
| 112 | Result : Item; |
| 113 | begin |
| 114 | To_C (Name, Name_Str.all, Name_Len); |
| 115 | To_C (Description, Desc_Str.all, Desc_Len); |
| 116 | Result := Newitem (Name_Str.all (Name_Str.all'First)'Access, |
| 117 | Desc_Str.all (Desc_Str.all'First)'Access); |
| 118 | if Result = Null_Item then |
| 119 | raise Eti_System_Error; |
| 120 | end if; |
| 121 | return Result; |
| 122 | end Create; |
| 123 | |
| 124 | procedure Delete (Itm : in out Item) |
| 125 | is |
| 126 | function Descname (Itm : Item) return chars_ptr; |
| 127 | pragma Import (C, Descname, "item_description"); |
| 128 | function Itemname (Itm : Item) return chars_ptr; |
| 129 | pragma Import (C, Itemname, "item_name"); |
| 130 | |
| 131 | function Freeitem (Itm : Item) return C_Int; |
| 132 | pragma Import (C, Freeitem, "free_item"); |
| 133 | |
| 134 | Res : Eti_Error; |
| 135 | Ptr : chars_ptr; |
| 136 | begin |
| 137 | Ptr := Descname (Itm); |
| 138 | if Ptr /= Null_Ptr then |
| 139 | Interfaces.C.Strings.Free (Ptr); |
| 140 | end if; |
| 141 | Ptr := Itemname (Itm); |
| 142 | if Ptr /= Null_Ptr then |
| 143 | Interfaces.C.Strings.Free (Ptr); |
| 144 | end if; |
| 145 | Res := Freeitem (Itm); |
| 146 | if Res /= E_Ok then |
| 147 | Eti_Exception (Res); |
| 148 | end if; |
| 149 | Itm := Null_Item; |
| 150 | end Delete; |
| 151 | ------------------------------------------------------------------------------- |
| 152 | procedure Set_Value (Itm : in Item; |
| 153 | Value : in Boolean := True) |
| 154 | is |
| 155 | function Set_Item_Val (Itm : Item; |
| 156 | Val : C_Int) return C_Int; |
| 157 | pragma Import (C, Set_Item_Val, "set_item_value"); |
| 158 | |
| 159 | Res : constant Eti_Error := Set_Item_Val (Itm, Boolean'Pos (Value)); |
| 160 | begin |
| 161 | if Res /= E_Ok then |
| 162 | Eti_Exception (Res); |
| 163 | end if; |
| 164 | end Set_Value; |
| 165 | |
| 166 | function Value (Itm : Item) return Boolean |
| 167 | is |
| 168 | function Item_Val (Itm : Item) return C_Int; |
| 169 | pragma Import (C, Item_Val, "item_value"); |
| 170 | begin |
| 171 | if Item_Val (Itm) = Curses_False then |
| 172 | return False; |
| 173 | else |
| 174 | return True; |
| 175 | end if; |
| 176 | end Value; |
| 177 | |
| 178 | ------------------------------------------------------------------------------- |
| 179 | function Visible (Itm : Item) return Boolean |
| 180 | is |
| 181 | function Item_Vis (Itm : Item) return C_Int; |
| 182 | pragma Import (C, Item_Vis, "item_visible"); |
| 183 | begin |
| 184 | if Item_Vis (Itm) = Curses_False then |
| 185 | return False; |
| 186 | else |
| 187 | return True; |
| 188 | end if; |
| 189 | end Visible; |
| 190 | ------------------------------------------------------------------------------- |
| 191 | procedure Set_Options (Itm : in Item; |
| 192 | Options : in Item_Option_Set) |
| 193 | is |
| 194 | function Set_Item_Opts (Itm : Item; |
| 195 | Opt : C_Int) return C_Int; |
| 196 | pragma Import (C, Set_Item_Opts, "set_item_opts"); |
| 197 | |
| 198 | Opt : constant C_Int := IOS_2_CInt (Options); |
| 199 | Res : Eti_Error; |
| 200 | begin |
| 201 | Res := Set_Item_Opts (Itm, Opt); |
| 202 | if Res /= E_Ok then |
| 203 | Eti_Exception (Res); |
| 204 | end if; |
| 205 | end Set_Options; |
| 206 | |
| 207 | procedure Switch_Options (Itm : in Item; |
| 208 | Options : in Item_Option_Set; |
| 209 | On : Boolean := True) |
| 210 | is |
| 211 | function Item_Opts_On (Itm : Item; |
| 212 | Opt : C_Int) return C_Int; |
| 213 | pragma Import (C, Item_Opts_On, "item_opts_on"); |
| 214 | function Item_Opts_Off (Itm : Item; |
| 215 | Opt : C_Int) return C_Int; |
| 216 | pragma Import (C, Item_Opts_Off, "item_opts_off"); |
| 217 | |
| 218 | Opt : constant C_Int := IOS_2_CInt (Options); |
| 219 | Err : Eti_Error; |
| 220 | begin |
| 221 | if On then |
| 222 | Err := Item_Opts_On (Itm, Opt); |
| 223 | else |
| 224 | Err := Item_Opts_Off (Itm, Opt); |
| 225 | end if; |
| 226 | if Err /= E_Ok then |
| 227 | Eti_Exception (Err); |
| 228 | end if; |
| 229 | end Switch_Options; |
| 230 | |
| 231 | procedure Get_Options (Itm : in Item; |
| 232 | Options : out Item_Option_Set) |
| 233 | is |
| 234 | function Item_Opts (Itm : Item) return C_Int; |
| 235 | pragma Import (C, Item_Opts, "item_opts"); |
| 236 | |
| 237 | Res : constant C_Int := Item_Opts (Itm); |
| 238 | begin |
| 239 | Options := CInt_2_IOS (Res); |
| 240 | end Get_Options; |
| 241 | |
| 242 | function Get_Options (Itm : Item := Null_Item) return Item_Option_Set |
| 243 | is |
| 244 | Ios : Item_Option_Set; |
| 245 | begin |
| 246 | Get_Options (Itm, Ios); |
| 247 | return Ios; |
| 248 | end Get_Options; |
| 249 | ------------------------------------------------------------------------------- |
| 250 | procedure Name (Itm : in Item; |
| 251 | Name : out String) |
| 252 | is |
| 253 | function Itemname (Itm : Item) return chars_ptr; |
| 254 | pragma Import (C, Itemname, "item_name"); |
| 255 | begin |
| 256 | Fill_String (Itemname (Itm), Name); |
| 257 | end Name; |
| 258 | |
| 259 | function Name (Itm : in Item) return String |
| 260 | is |
| 261 | function Itemname (Itm : Item) return chars_ptr; |
| 262 | pragma Import (C, Itemname, "item_name"); |
| 263 | begin |
| 264 | return Fill_String (Itemname (Itm)); |
| 265 | end Name; |
| 266 | |
| 267 | procedure Description (Itm : in Item; |
| 268 | Description : out String) |
| 269 | is |
| 270 | function Descname (Itm : Item) return chars_ptr; |
| 271 | pragma Import (C, Descname, "item_description"); |
| 272 | begin |
| 273 | Fill_String (Descname (Itm), Description); |
| 274 | end Description; |
| 275 | |
| 276 | function Description (Itm : in Item) return String |
| 277 | is |
| 278 | function Descname (Itm : Item) return chars_ptr; |
| 279 | pragma Import (C, Descname, "item_description"); |
| 280 | begin |
| 281 | return Fill_String (Descname (Itm)); |
| 282 | end Description; |
| 283 | ------------------------------------------------------------------------------- |
| 284 | procedure Set_Current (Men : in Menu; |
| 285 | Itm : in Item) |
| 286 | is |
| 287 | function Set_Curr_Item (Men : Menu; |
| 288 | Itm : Item) return C_Int; |
| 289 | pragma Import (C, Set_Curr_Item, "set_current_item"); |
| 290 | |
| 291 | Res : constant Eti_Error := Set_Curr_Item (Men, Itm); |
| 292 | begin |
| 293 | if Res /= E_Ok then |
| 294 | Eti_Exception (Res); |
| 295 | end if; |
| 296 | end Set_Current; |
| 297 | |
| 298 | function Current (Men : Menu) return Item |
| 299 | is |
| 300 | function Curr_Item (Men : Menu) return Item; |
| 301 | pragma Import (C, Curr_Item, "current_item"); |
| 302 | |
| 303 | Res : constant Item := Curr_Item (Men); |
| 304 | begin |
| 305 | if Res = Null_Item then |
| 306 | raise Menu_Exception; |
| 307 | end if; |
| 308 | return Res; |
| 309 | end Current; |
| 310 | |
| 311 | procedure Set_Top_Row (Men : in Menu; |
| 312 | Line : in Line_Position) |
| 313 | is |
| 314 | function Set_Toprow (Men : Menu; |
| 315 | Line : C_Int) return C_Int; |
| 316 | pragma Import (C, Set_Toprow, "set_top_row"); |
| 317 | |
| 318 | Res : constant Eti_Error := Set_Toprow (Men, C_Int (Line)); |
| 319 | begin |
| 320 | if Res /= E_Ok then |
| 321 | Eti_Exception (Res); |
| 322 | end if; |
| 323 | end Set_Top_Row; |
| 324 | |
| 325 | function Top_Row (Men : Menu) return Line_Position |
| 326 | is |
| 327 | function Toprow (Men : Menu) return C_Int; |
| 328 | pragma Import (C, Toprow, "top_row"); |
| 329 | |
| 330 | Res : constant C_Int := Toprow (Men); |
| 331 | begin |
| 332 | if Res = Curses_Err then |
| 333 | raise Menu_Exception; |
| 334 | end if; |
| 335 | return Line_Position (Res); |
| 336 | end Top_Row; |
| 337 | |
| 338 | function Get_Index (Itm : Item) return Positive |
| 339 | is |
| 340 | function Get_Itemindex (Itm : Item) return C_Int; |
| 341 | pragma Import (C, Get_Itemindex, "item_index"); |
| 342 | |
| 343 | Res : constant C_Int := Get_Itemindex (Itm); |
| 344 | begin |
| 345 | if Res = Curses_Err then |
| 346 | raise Menu_Exception; |
| 347 | end if; |
| 348 | return Positive (Natural (Res) + Positive'First); |
| 349 | end Get_Index; |
| 350 | ------------------------------------------------------------------------------- |
| 351 | procedure Post (Men : in Menu; |
| 352 | Post : in Boolean := True) |
| 353 | is |
| 354 | function M_Post (Men : Menu) return C_Int; |
| 355 | pragma Import (C, M_Post, "post_menu"); |
| 356 | function M_Unpost (Men : Menu) return C_Int; |
| 357 | pragma Import (C, M_Unpost, "unpost_menu"); |
| 358 | |
| 359 | Res : Eti_Error; |
| 360 | begin |
| 361 | if Post then |
| 362 | Res := M_Post (Men); |
| 363 | else |
| 364 | Res := M_Unpost (Men); |
| 365 | end if; |
| 366 | if Res /= E_Ok then |
| 367 | Eti_Exception (Res); |
| 368 | end if; |
| 369 | end Post; |
| 370 | ------------------------------------------------------------------------------- |
| 371 | procedure Set_Options (Men : in Menu; |
| 372 | Options : in Menu_Option_Set) |
| 373 | is |
| 374 | function Set_Menu_Opts (Men : Menu; |
| 375 | Opt : C_Int) return C_Int; |
| 376 | pragma Import (C, Set_Menu_Opts, "set_menu_opts"); |
| 377 | |
| 378 | Opt : constant C_Int := MOS_2_CInt (Options); |
| 379 | Res : Eti_Error; |
| 380 | begin |
| 381 | Res := Set_Menu_Opts (Men, Opt); |
| 382 | if Res /= E_Ok then |
| 383 | Eti_Exception (Res); |
| 384 | end if; |
| 385 | end Set_Options; |
| 386 | |
| 387 | procedure Switch_Options (Men : in Menu; |
| 388 | Options : in Menu_Option_Set; |
| 389 | On : in Boolean := True) |
| 390 | is |
| 391 | function Menu_Opts_On (Men : Menu; |
| 392 | Opt : C_Int) return C_Int; |
| 393 | pragma Import (C, Menu_Opts_On, "menu_opts_on"); |
| 394 | function Menu_Opts_Off (Men : Menu; |
| 395 | Opt : C_Int) return C_Int; |
| 396 | pragma Import (C, Menu_Opts_Off, "menu_opts_off"); |
| 397 | |
| 398 | Opt : constant C_Int := MOS_2_CInt (Options); |
| 399 | Err : Eti_Error; |
| 400 | begin |
| 401 | if On then |
| 402 | Err := Menu_Opts_On (Men, Opt); |
| 403 | else |
| 404 | Err := Menu_Opts_Off (Men, Opt); |
| 405 | end if; |
| 406 | if Err /= E_Ok then |
| 407 | Eti_Exception (Err); |
| 408 | end if; |
| 409 | end Switch_Options; |
| 410 | |
| 411 | procedure Get_Options (Men : in Menu; |
| 412 | Options : out Menu_Option_Set) |
| 413 | is |
| 414 | function Menu_Opts (Men : Menu) return C_Int; |
| 415 | pragma Import (C, Menu_Opts, "menu_opts"); |
| 416 | |
| 417 | Res : constant C_Int := Menu_Opts (Men); |
| 418 | begin |
| 419 | Options := CInt_2_MOS (Res); |
| 420 | end Get_Options; |
| 421 | |
| 422 | function Get_Options (Men : Menu := Null_Menu) return Menu_Option_Set |
| 423 | is |
| 424 | Mos : Menu_Option_Set; |
| 425 | begin |
| 426 | Get_Options (Men, Mos); |
| 427 | return Mos; |
| 428 | end Get_Options; |
| 429 | ------------------------------------------------------------------------------- |
| 430 | procedure Set_Window (Men : in Menu; |
| 431 | Win : in Window) |
| 432 | is |
| 433 | function Set_Menu_Win (Men : Menu; |
| 434 | Win : Window) return C_Int; |
| 435 | pragma Import (C, Set_Menu_Win, "set_menu_win"); |
| 436 | |
| 437 | Res : constant Eti_Error := Set_Menu_Win (Men, Win); |
| 438 | begin |
| 439 | if Res /= E_Ok then |
| 440 | Eti_Exception (Res); |
| 441 | end if; |
| 442 | end Set_Window; |
| 443 | |
| 444 | function Get_Window (Men : Menu) return Window |
| 445 | is |
| 446 | function Menu_Win (Men : Menu) return Window; |
| 447 | pragma Import (C, Menu_Win, "menu_win"); |
| 448 | |
| 449 | W : constant Window := Menu_Win (Men); |
| 450 | begin |
| 451 | return W; |
| 452 | end Get_Window; |
| 453 | |
| 454 | procedure Set_Sub_Window (Men : in Menu; |
| 455 | Win : in Window) |
| 456 | is |
| 457 | function Set_Menu_Sub (Men : Menu; |
| 458 | Win : Window) return C_Int; |
| 459 | pragma Import (C, Set_Menu_Sub, "set_menu_sub"); |
| 460 | |
| 461 | Res : constant Eti_Error := Set_Menu_Sub (Men, Win); |
| 462 | begin |
| 463 | if Res /= E_Ok then |
| 464 | Eti_Exception (Res); |
| 465 | end if; |
| 466 | end Set_Sub_Window; |
| 467 | |
| 468 | function Get_Sub_Window (Men : Menu) return Window |
| 469 | is |
| 470 | function Menu_Sub (Men : Menu) return Window; |
| 471 | pragma Import (C, Menu_Sub, "menu_sub"); |
| 472 | |
| 473 | W : constant Window := Menu_Sub (Men); |
| 474 | begin |
| 475 | return W; |
| 476 | end Get_Sub_Window; |
| 477 | |
| 478 | procedure Scale (Men : in Menu; |
| 479 | Lines : out Line_Count; |
| 480 | Columns : out Column_Count) |
| 481 | is |
| 482 | type C_Int_Access is access all C_Int; |
| 483 | function M_Scale (Men : Menu; |
| 484 | Yp, Xp : C_Int_Access) return C_Int; |
| 485 | pragma Import (C, M_Scale, "scale_menu"); |
| 486 | |
| 487 | X, Y : aliased C_Int; |
| 488 | Res : constant Eti_Error := M_Scale (Men, Y'Access, X'Access); |
| 489 | begin |
| 490 | if Res /= E_Ok then |
| 491 | Eti_Exception (Res); |
| 492 | end if; |
| 493 | Lines := Line_Count (Y); |
| 494 | Columns := Column_Count (X); |
| 495 | end Scale; |
| 496 | ------------------------------------------------------------------------------- |
| 497 | procedure Position_Cursor (Men : Menu) |
| 498 | is |
| 499 | function Pos_Menu_Cursor (Men : Menu) return C_Int; |
| 500 | pragma Import (C, Pos_Menu_Cursor, "pos_menu_cursor"); |
| 501 | |
| 502 | Res : constant Eti_Error := Pos_Menu_Cursor (Men); |
| 503 | begin |
| 504 | if Res /= E_Ok then |
| 505 | Eti_Exception (Res); |
| 506 | end if; |
| 507 | end Position_Cursor; |
| 508 | |
| 509 | ------------------------------------------------------------------------------- |
| 510 | procedure Set_Mark (Men : in Menu; |
| 511 | Mark : in String) |
| 512 | is |
| 513 | type Char_Ptr is access all Interfaces.C.char; |
| 514 | function Set_Mark (Men : Menu; |
| 515 | Mark : Char_Ptr) return C_Int; |
| 516 | pragma Import (C, Set_Mark, "set_menu_mark"); |
| 517 | |
| 518 | Txt : char_array (0 .. Mark'Length); |
| 519 | Len : size_t; |
| 520 | Res : Eti_Error; |
| 521 | begin |
| 522 | To_C (Mark, Txt, Len); |
| 523 | Res := Set_Mark (Men, Txt (Txt'First)'Access); |
| 524 | if Res /= E_Ok then |
| 525 | Eti_Exception (Res); |
| 526 | end if; |
| 527 | end Set_Mark; |
| 528 | |
| 529 | procedure Mark (Men : in Menu; |
| 530 | Mark : out String) |
| 531 | is |
| 532 | function Get_Menu_Mark (Men : Menu) return chars_ptr; |
| 533 | pragma Import (C, Get_Menu_Mark, "menu_mark"); |
| 534 | begin |
| 535 | Fill_String (Get_Menu_Mark (Men), Mark); |
| 536 | end Mark; |
| 537 | |
| 538 | function Mark (Men : Menu) return String |
| 539 | is |
| 540 | function Get_Menu_Mark (Men : Menu) return chars_ptr; |
| 541 | pragma Import (C, Get_Menu_Mark, "menu_mark"); |
| 542 | begin |
| 543 | return Fill_String (Get_Menu_Mark (Men)); |
| 544 | end Mark; |
| 545 | |
| 546 | ------------------------------------------------------------------------------- |
| 547 | procedure Set_Foreground |
| 548 | (Men : in Menu; |
| 549 | Fore : in Character_Attribute_Set := Normal_Video; |
| 550 | Color : in Color_Pair := Color_Pair'First) |
| 551 | is |
| 552 | function Set_Menu_Fore (Men : Menu; |
| 553 | Attr : C_Chtype) return C_Int; |
| 554 | pragma Import (C, Set_Menu_Fore, "set_menu_fore"); |
| 555 | |
| 556 | Ch : constant Attributed_Character := (Ch => Character'First, |
| 557 | Color => Color, |
| 558 | Attr => Fore); |
| 559 | Res : constant Eti_Error := Set_Menu_Fore (Men, AttrChar_To_Chtype (Ch)); |
| 560 | begin |
| 561 | if Res /= E_Ok then |
| 562 | Eti_Exception (Res); |
| 563 | end if; |
| 564 | end Set_Foreground; |
| 565 | |
| 566 | procedure Foreground (Men : in Menu; |
| 567 | Fore : out Character_Attribute_Set) |
| 568 | is |
| 569 | function Menu_Fore (Men : Menu) return C_Chtype; |
| 570 | pragma Import (C, Menu_Fore, "menu_fore"); |
| 571 | begin |
| 572 | Fore := Chtype_To_AttrChar (Menu_Fore (Men)).Attr; |
| 573 | end Foreground; |
| 574 | |
| 575 | procedure Foreground (Men : in Menu; |
| 576 | Fore : out Character_Attribute_Set; |
| 577 | Color : out Color_Pair) |
| 578 | is |
| 579 | function Menu_Fore (Men : Menu) return C_Chtype; |
| 580 | pragma Import (C, Menu_Fore, "menu_fore"); |
| 581 | begin |
| 582 | Fore := Chtype_To_AttrChar (Menu_Fore (Men)).Attr; |
| 583 | Color := Chtype_To_AttrChar (Menu_Fore (Men)).Color; |
| 584 | end Foreground; |
| 585 | |
| 586 | procedure Set_Background |
| 587 | (Men : in Menu; |
| 588 | Back : in Character_Attribute_Set := Normal_Video; |
| 589 | Color : in Color_Pair := Color_Pair'First) |
| 590 | is |
| 591 | function Set_Menu_Back (Men : Menu; |
| 592 | Attr : C_Chtype) return C_Int; |
| 593 | pragma Import (C, Set_Menu_Back, "set_menu_back"); |
| 594 | |
| 595 | Ch : constant Attributed_Character := (Ch => Character'First, |
| 596 | Color => Color, |
| 597 | Attr => Back); |
| 598 | Res : constant Eti_Error := Set_Menu_Back (Men, AttrChar_To_Chtype (Ch)); |
| 599 | begin |
| 600 | if Res /= E_Ok then |
| 601 | Eti_Exception (Res); |
| 602 | end if; |
| 603 | end Set_Background; |
| 604 | |
| 605 | procedure Background (Men : in Menu; |
| 606 | Back : out Character_Attribute_Set) |
| 607 | is |
| 608 | function Menu_Back (Men : Menu) return C_Chtype; |
| 609 | pragma Import (C, Menu_Back, "menu_back"); |
| 610 | begin |
| 611 | Back := Chtype_To_AttrChar (Menu_Back (Men)).Attr; |
| 612 | end Background; |
| 613 | |
| 614 | procedure Background (Men : in Menu; |
| 615 | Back : out Character_Attribute_Set; |
| 616 | Color : out Color_Pair) |
| 617 | is |
| 618 | function Menu_Back (Men : Menu) return C_Chtype; |
| 619 | pragma Import (C, Menu_Back, "menu_back"); |
| 620 | begin |
| 621 | Back := Chtype_To_AttrChar (Menu_Back (Men)).Attr; |
| 622 | Color := Chtype_To_AttrChar (Menu_Back (Men)).Color; |
| 623 | end Background; |
| 624 | |
| 625 | procedure Set_Grey (Men : in Menu; |
| 626 | Grey : in Character_Attribute_Set := Normal_Video; |
| 627 | Color : in Color_Pair := Color_Pair'First) |
| 628 | is |
| 629 | function Set_Menu_Grey (Men : Menu; |
| 630 | Attr : C_Chtype) return C_Int; |
| 631 | pragma Import (C, Set_Menu_Grey, "set_menu_grey"); |
| 632 | |
| 633 | Ch : constant Attributed_Character := (Ch => Character'First, |
| 634 | Color => Color, |
| 635 | Attr => Grey); |
| 636 | |
| 637 | Res : constant Eti_Error := Set_Menu_Grey (Men, AttrChar_To_Chtype (Ch)); |
| 638 | begin |
| 639 | if Res /= E_Ok then |
| 640 | Eti_Exception (Res); |
| 641 | end if; |
| 642 | end Set_Grey; |
| 643 | |
| 644 | procedure Grey (Men : in Menu; |
| 645 | Grey : out Character_Attribute_Set) |
| 646 | is |
| 647 | function Menu_Grey (Men : Menu) return C_Chtype; |
| 648 | pragma Import (C, Menu_Grey, "menu_grey"); |
| 649 | begin |
| 650 | Grey := Chtype_To_AttrChar (Menu_Grey (Men)).Attr; |
| 651 | end Grey; |
| 652 | |
| 653 | procedure Grey (Men : in Menu; |
| 654 | Grey : out Character_Attribute_Set; |
| 655 | Color : out Color_Pair) |
| 656 | is |
| 657 | function Menu_Grey (Men : Menu) return C_Chtype; |
| 658 | pragma Import (C, Menu_Grey, "menu_grey"); |
| 659 | begin |
| 660 | Grey := Chtype_To_AttrChar (Menu_Grey (Men)).Attr; |
| 661 | Color := Chtype_To_AttrChar (Menu_Grey (Men)).Color; |
| 662 | end Grey; |
| 663 | |
| 664 | procedure Set_Pad_Character (Men : in Menu; |
| 665 | Pad : in Character := Space) |
| 666 | is |
| 667 | function Set_Menu_Pad (Men : Menu; |
| 668 | Ch : C_Int) return C_Int; |
| 669 | pragma Import (C, Set_Menu_Pad, "set_menu_pad"); |
| 670 | |
| 671 | Res : constant Eti_Error := Set_Menu_Pad (Men, |
| 672 | C_Int (Character'Pos (Pad))); |
| 673 | begin |
| 674 | if Res /= E_Ok then |
| 675 | Eti_Exception (Res); |
| 676 | end if; |
| 677 | end Set_Pad_Character; |
| 678 | |
| 679 | procedure Pad_Character (Men : in Menu; |
| 680 | Pad : out Character) |
| 681 | is |
| 682 | function Menu_Pad (Men : Menu) return C_Int; |
| 683 | pragma Import (C, Menu_Pad, "menu_pad"); |
| 684 | begin |
| 685 | Pad := Character'Val (Menu_Pad (Men)); |
| 686 | end Pad_Character; |
| 687 | ------------------------------------------------------------------------------- |
| 688 | procedure Set_Spacing (Men : in Menu; |
| 689 | Descr : in Column_Position := 0; |
| 690 | Row : in Line_Position := 0; |
| 691 | Col : in Column_Position := 0) |
| 692 | is |
| 693 | function Set_Spacing (Men : Menu; |
| 694 | D, R, C : C_Int) return C_Int; |
| 695 | pragma Import (C, Set_Spacing, "set_menu_spacing"); |
| 696 | |
| 697 | Res : constant Eti_Error := Set_Spacing (Men, |
| 698 | C_Int (Descr), |
| 699 | C_Int (Row), |
| 700 | C_Int (Col)); |
| 701 | begin |
| 702 | if Res /= E_Ok then |
| 703 | Eti_Exception (Res); |
| 704 | end if; |
| 705 | end Set_Spacing; |
| 706 | |
| 707 | procedure Spacing (Men : in Menu; |
| 708 | Descr : out Column_Position; |
| 709 | Row : out Line_Position; |
| 710 | Col : out Column_Position) |
| 711 | is |
| 712 | type C_Int_Access is access all C_Int; |
| 713 | function Get_Spacing (Men : Menu; |
| 714 | D, R, C : C_Int_Access) return C_Int; |
| 715 | pragma Import (C, Get_Spacing, "menu_spacing"); |
| 716 | |
| 717 | D, R, C : aliased C_Int; |
| 718 | Res : constant Eti_Error := Get_Spacing (Men, |
| 719 | D'Access, |
| 720 | R'Access, |
| 721 | C'Access); |
| 722 | begin |
| 723 | if Res /= E_Ok then |
| 724 | Eti_Exception (Res); |
| 725 | else |
| 726 | Descr := Column_Position (D); |
| 727 | Row := Line_Position (R); |
| 728 | Col := Column_Position (C); |
| 729 | end if; |
| 730 | end Spacing; |
| 731 | ------------------------------------------------------------------------------- |
| 732 | function Set_Pattern (Men : Menu; |
| 733 | Text : String) return Boolean |
| 734 | is |
| 735 | type Char_Ptr is access all Interfaces.C.char; |
| 736 | function Set_Pattern (Men : Menu; |
| 737 | Pattern : Char_Ptr) return C_Int; |
| 738 | pragma Import (C, Set_Pattern, "set_menu_pattern"); |
| 739 | |
| 740 | S : char_array (0 .. Text'Length); |
| 741 | L : size_t; |
| 742 | Res : Eti_Error; |
| 743 | begin |
| 744 | To_C (Text, S, L); |
| 745 | Res := Set_Pattern (Men, S (S'First)'Access); |
| 746 | case Res is |
| 747 | when E_No_Match => return False; |
| 748 | when E_Ok => return True; |
| 749 | when others => |
| 750 | Eti_Exception (Res); |
| 751 | return False; |
| 752 | end case; |
| 753 | end Set_Pattern; |
| 754 | |
| 755 | procedure Pattern (Men : in Menu; |
| 756 | Text : out String) |
| 757 | is |
| 758 | function Get_Pattern (Men : Menu) return chars_ptr; |
| 759 | pragma Import (C, Get_Pattern, "menu_pattern"); |
| 760 | begin |
| 761 | Fill_String (Get_Pattern (Men), Text); |
| 762 | end Pattern; |
| 763 | ------------------------------------------------------------------------------- |
| 764 | procedure Set_Format (Men : in Menu; |
| 765 | Lines : in Line_Count; |
| 766 | Columns : in Column_Count) |
| 767 | is |
| 768 | function Set_Menu_Fmt (Men : Menu; |
| 769 | Lin : C_Int; |
| 770 | Col : C_Int) return C_Int; |
| 771 | pragma Import (C, Set_Menu_Fmt, "set_menu_format"); |
| 772 | |
| 773 | Res : constant Eti_Error := Set_Menu_Fmt (Men, |
| 774 | C_Int (Lines), |
| 775 | C_Int (Columns)); |
| 776 | begin |
| 777 | if Res /= E_Ok then |
| 778 | Eti_Exception (Res); |
| 779 | end if; |
| 780 | end Set_Format; |
| 781 | |
| 782 | procedure Format (Men : in Menu; |
| 783 | Lines : out Line_Count; |
| 784 | Columns : out Column_Count) |
| 785 | is |
| 786 | type C_Int_Access is access all C_Int; |
| 787 | function Menu_Fmt (Men : Menu; |
| 788 | Y, X : C_Int_Access) return C_Int; |
| 789 | pragma Import (C, Menu_Fmt, "menu_format"); |
| 790 | |
| 791 | L, C : aliased C_Int; |
| 792 | Res : constant Eti_Error := Menu_Fmt (Men, L'Access, C'Access); |
| 793 | begin |
| 794 | if Res /= E_Ok then |
| 795 | Eti_Exception (Res); |
| 796 | else |
| 797 | Lines := Line_Count (L); |
| 798 | Columns := Column_Count (C); |
| 799 | end if; |
| 800 | end Format; |
| 801 | ------------------------------------------------------------------------------- |
| 802 | procedure Set_Item_Init_Hook (Men : in Menu; |
| 803 | Proc : in Menu_Hook_Function) |
| 804 | is |
| 805 | function Set_Item_Init (Men : Menu; |
| 806 | Proc : Menu_Hook_Function) return C_Int; |
| 807 | pragma Import (C, Set_Item_Init, "set_item_init"); |
| 808 | |
| 809 | Res : constant Eti_Error := Set_Item_Init (Men, Proc); |
| 810 | begin |
| 811 | if Res /= E_Ok then |
| 812 | Eti_Exception (Res); |
| 813 | end if; |
| 814 | end Set_Item_Init_Hook; |
| 815 | |
| 816 | procedure Set_Item_Term_Hook (Men : in Menu; |
| 817 | Proc : in Menu_Hook_Function) |
| 818 | is |
| 819 | function Set_Item_Term (Men : Menu; |
| 820 | Proc : Menu_Hook_Function) return C_Int; |
| 821 | pragma Import (C, Set_Item_Term, "set_item_term"); |
| 822 | |
| 823 | Res : constant Eti_Error := Set_Item_Term (Men, Proc); |
| 824 | begin |
| 825 | if Res /= E_Ok then |
| 826 | Eti_Exception (Res); |
| 827 | end if; |
| 828 | end Set_Item_Term_Hook; |
| 829 | |
| 830 | procedure Set_Menu_Init_Hook (Men : in Menu; |
| 831 | Proc : in Menu_Hook_Function) |
| 832 | is |
| 833 | function Set_Menu_Init (Men : Menu; |
| 834 | Proc : Menu_Hook_Function) return C_Int; |
| 835 | pragma Import (C, Set_Menu_Init, "set_menu_init"); |
| 836 | |
| 837 | Res : constant Eti_Error := Set_Menu_Init (Men, Proc); |
| 838 | begin |
| 839 | if Res /= E_Ok then |
| 840 | Eti_Exception (Res); |
| 841 | end if; |
| 842 | end Set_Menu_Init_Hook; |
| 843 | |
| 844 | procedure Set_Menu_Term_Hook (Men : in Menu; |
| 845 | Proc : in Menu_Hook_Function) |
| 846 | is |
| 847 | function Set_Menu_Term (Men : Menu; |
| 848 | Proc : Menu_Hook_Function) return C_Int; |
| 849 | pragma Import (C, Set_Menu_Term, "set_menu_term"); |
| 850 | |
| 851 | Res : constant Eti_Error := Set_Menu_Term (Men, Proc); |
| 852 | begin |
| 853 | if Res /= E_Ok then |
| 854 | Eti_Exception (Res); |
| 855 | end if; |
| 856 | end Set_Menu_Term_Hook; |
| 857 | |
| 858 | function Get_Item_Init_Hook (Men : Menu) return Menu_Hook_Function |
| 859 | is |
| 860 | function Item_Init (Men : Menu) return Menu_Hook_Function; |
| 861 | pragma Import (C, Item_Init, "item_init"); |
| 862 | begin |
| 863 | return Item_Init (Men); |
| 864 | end Get_Item_Init_Hook; |
| 865 | |
| 866 | function Get_Item_Term_Hook (Men : Menu) return Menu_Hook_Function |
| 867 | is |
| 868 | function Item_Term (Men : Menu) return Menu_Hook_Function; |
| 869 | pragma Import (C, Item_Term, "item_term"); |
| 870 | begin |
| 871 | return Item_Term (Men); |
| 872 | end Get_Item_Term_Hook; |
| 873 | |
| 874 | function Get_Menu_Init_Hook (Men : Menu) return Menu_Hook_Function |
| 875 | is |
| 876 | function Menu_Init (Men : Menu) return Menu_Hook_Function; |
| 877 | pragma Import (C, Menu_Init, "menu_init"); |
| 878 | begin |
| 879 | return Menu_Init (Men); |
| 880 | end Get_Menu_Init_Hook; |
| 881 | |
| 882 | function Get_Menu_Term_Hook (Men : Menu) return Menu_Hook_Function |
| 883 | is |
| 884 | function Menu_Term (Men : Menu) return Menu_Hook_Function; |
| 885 | pragma Import (C, Menu_Term, "menu_term"); |
| 886 | begin |
| 887 | return Menu_Term (Men); |
| 888 | end Get_Menu_Term_Hook; |
| 889 | ------------------------------------------------------------------------------- |
| 890 | procedure Redefine (Men : in Menu; |
| 891 | Items : in Item_Array_Access) |
| 892 | is |
| 893 | function Set_Items (Men : Menu; |
| 894 | Items : System.Address) return C_Int; |
| 895 | pragma Import (C, Set_Items, "set_menu_items"); |
| 896 | |
| 897 | Res : Eti_Error; |
| 898 | begin |
| 899 | pragma Assert (Items (Items'Last) = Null_Item); |
| 900 | if Items (Items'Last) /= Null_Item then |
| 901 | raise Menu_Exception; |
| 902 | else |
| 903 | Res := Set_Items (Men, Items.all'Address); |
| 904 | if Res /= E_Ok then |
| 905 | Eti_Exception (Res); |
| 906 | end if; |
| 907 | end if; |
| 908 | end Redefine; |
| 909 | |
| 910 | function Item_Count (Men : Menu) return Natural |
| 911 | is |
| 912 | function Count (Men : Menu) return C_Int; |
| 913 | pragma Import (C, Count, "item_count"); |
| 914 | begin |
| 915 | return Natural (Count (Men)); |
| 916 | end Item_Count; |
| 917 | |
| 918 | function Items (Men : Menu; |
| 919 | Index : Positive) return Item |
| 920 | is |
| 921 | use I_Array; |
| 922 | |
| 923 | function C_Mitems (Men : Menu) return Pointer; |
| 924 | pragma Import (C, C_Mitems, "menu_items"); |
| 925 | |
| 926 | P : Pointer := C_Mitems (Men); |
| 927 | begin |
| 928 | if P = null or else Index > Item_Count (Men) then |
| 929 | raise Menu_Exception; |
| 930 | else |
| 931 | P := P + ptrdiff_t (C_Int (Index) - 1); |
| 932 | return P.all; |
| 933 | end if; |
| 934 | end Items; |
| 935 | |
| 936 | ------------------------------------------------------------------------------- |
| 937 | function Create (Items : Item_Array_Access) return Menu |
| 938 | is |
| 939 | function Newmenu (Items : System.Address) return Menu; |
| 940 | pragma Import (C, Newmenu, "new_menu"); |
| 941 | |
| 942 | M : Menu; |
| 943 | begin |
| 944 | pragma Assert (Items (Items'Last) = Null_Item); |
| 945 | if Items (Items'Last) /= Null_Item then |
| 946 | raise Menu_Exception; |
| 947 | else |
| 948 | M := Newmenu (Items.all'Address); |
| 949 | if M = Null_Menu then |
| 950 | raise Menu_Exception; |
| 951 | end if; |
| 952 | return M; |
| 953 | end if; |
| 954 | end Create; |
| 955 | |
| 956 | procedure Delete (Men : in out Menu) |
| 957 | is |
| 958 | function Free (Men : Menu) return C_Int; |
| 959 | pragma Import (C, Free, "free_menu"); |
| 960 | |
| 961 | Res : constant Eti_Error := Free (Men); |
| 962 | begin |
| 963 | if Res /= E_Ok then |
| 964 | Eti_Exception (Res); |
| 965 | end if; |
| 966 | Men := Null_Menu; |
| 967 | end Delete; |
| 968 | |
| 969 | ------------------------------------------------------------------------------ |
| 970 | function Driver (Men : Menu; |
| 971 | Key : Key_Code) return Driver_Result |
| 972 | is |
| 973 | function Driver (Men : Menu; |
| 974 | Key : C_Int) return C_Int; |
| 975 | pragma Import (C, Driver, "menu_driver"); |
| 976 | |
| 977 | R : constant Eti_Error := Driver (Men, C_Int (Key)); |
| 978 | begin |
| 979 | if R /= E_Ok then |
| 980 | case R is |
| 981 | when E_Unknown_Command => return Unknown_Request; |
| 982 | when E_No_Match => return No_Match; |
| 983 | when E_Request_Denied | |
| 984 | E_Not_Selectable => return Request_Denied; |
| 985 | when others => |
| 986 | Eti_Exception (R); |
| 987 | end case; |
| 988 | end if; |
| 989 | return Menu_Ok; |
| 990 | end Driver; |
| 991 | |
| 992 | procedure Free (IA : in out Item_Array_Access; |
| 993 | Free_Items : in Boolean := False) |
| 994 | is |
| 995 | procedure Release is new Ada.Unchecked_Deallocation |
| 996 | (Item_Array, Item_Array_Access); |
| 997 | begin |
| 998 | if IA /= null and then Free_Items then |
| 999 | for I in IA'First .. (IA'Last - 1) loop |
| 1000 | if IA (I) /= Null_Item then |
| 1001 | Delete (IA (I)); |
| 1002 | end if; |
| 1003 | end loop; |
| 1004 | end if; |
| 1005 | Release (IA); |
| 1006 | end Free; |
| 1007 | |
| 1008 | ------------------------------------------------------------------------------- |
| 1009 | function Default_Menu_Options return Menu_Option_Set |
| 1010 | is |
| 1011 | begin |
| 1012 | return Get_Options (Null_Menu); |
| 1013 | end Default_Menu_Options; |
| 1014 | |
| 1015 | function Default_Item_Options return Item_Option_Set |
| 1016 | is |
| 1017 | begin |
| 1018 | return Get_Options (Null_Item); |
| 1019 | end Default_Item_Options; |
| 1020 | ------------------------------------------------------------------------------- |
| 1021 | |
| 1022 | end Terminal_Interface.Curses.Menus; |