gdb/tui/tui-data.c

   1 /* TUI data manipulation routines.
   2
   3    Copyright (C) 1998-2004, 2006-2012 Free Software Foundation, Inc.
   4
   5    Contributed by Hewlett-Packard Company.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include "defs.h"
  23 #include "symtab.h"
  24 #include "tui/tui.h"
  25 #include "tui/tui-data.h"
  26 #include "tui/tui-wingeneral.h"
  27
  28 #include "gdb_string.h"
  29 #include "gdb_curses.h"
  30
  31 /****************************
  32 ** GLOBAL DECLARATIONS
  33 ****************************/
  34 struct tui_win_info *(tui_win_list[MAX_MAJOR_WINDOWS]);
  35
  36 /***************************
  37 ** Private data
  38 ****************************/
  39 static enum tui_layout_type current_layout = UNDEFINED_LAYOUT;
  40 static int term_height, term_width;
  41 static struct tui_gen_win_info _locator;
  42 static struct tui_gen_win_info exec_info[2];
  43 static struct tui_win_info *src_win_list[2];
  44 static struct tui_list source_windows = {src_win_list, 0};
  45 static int default_tab_len = DEFAULT_TAB_LEN;
  46 static struct tui_win_info *win_with_focus = (struct tui_win_info *) NULL;
  47 static struct tui_layout_def layout_def = {
  48   SRC_WIN,                      /* DISPLAY_MODE */
  49   FALSE,                        /* SPLIT */
  50   TUI_UNDEFINED_REGS,           /* REGS_DISPLAY_TYPE */
  51   TUI_SFLOAT_REGS};             /* FLOAT_REGS_DISPLAY_TYPE */
  52
  53 static int win_resized = FALSE;
  54
  55
  56 /*********************************
  57 ** Static function forward decls
  58 **********************************/
  59 static void free_content (tui_win_content,
  60                           int,
  61                           enum tui_win_type);
  62 static void free_content_elements (tui_win_content,
  63                                    int,
  64                                    enum tui_win_type);
  65
  66
  67
  68 /*********************************
  69 ** PUBLIC FUNCTIONS
  70 **********************************/
  71
  72 int
  73 tui_win_is_source_type (enum tui_win_type win_type)
  74 {
  75   return (win_type == SRC_WIN || win_type == DISASSEM_WIN);
  76 }
  77
  78 int
  79 tui_win_is_auxillary (enum tui_win_type win_type)
  80 {
  81   return (win_type > MAX_MAJOR_WINDOWS);
  82 }
  83
  84 int
  85 tui_win_has_locator (struct tui_win_info *win_info)
  86 {
  87   return (win_info != NULL
  88           && win_info->detail.source_info.has_locator);
  89 }
  90
  91 void
  92 tui_set_win_highlight (struct tui_win_info *win_info,
  93                        int highlight)
  94 {
  95   if (win_info != NULL)
  96     win_info->is_highlighted = highlight;
  97 }
  98
  99 /******************************************
 100 ** ACCESSORS & MUTATORS FOR PRIVATE DATA
 101 ******************************************/
 102
 103 /* Answer a whether the terminal window has been resized or not.  */
 104 int
 105 tui_win_resized (void)
 106 {
 107   return win_resized;
 108 }
 109
 110
 111 /* Set a whether the terminal window has been resized or not.  */
 112 void
 113 tui_set_win_resized_to (int resized)
 114 {
 115   win_resized = resized;
 116 }
 117
 118
 119 /* Answer a pointer to the current layout definition.  */
 120 struct tui_layout_def *
 121 tui_layout_def (void)
 122 {
 123   return &layout_def;
 124 }
 125
 126
 127 /* Answer the window with the logical focus.  */
 128 struct tui_win_info *
 129 tui_win_with_focus (void)
 130 {
 131   return win_with_focus;
 132 }
 133
 134
 135 /* Set the window that has the logical focus.  */
 136 void
 137 tui_set_win_with_focus (struct tui_win_info *win_info)
 138 {
 139   win_with_focus = win_info;
 140 }
 141
 142
 143 /* Answer the length in chars, of tabs.  */
 144 int
 145 tui_default_tab_len (void)
 146 {
 147   return default_tab_len;
 148 }
 149
 150
 151 /* Set the length in chars, of tabs.  */
 152 void
 153 tui_set_default_tab_len (int len)
 154 {
 155   default_tab_len = len;
 156 }
 157
 158
 159 /* Accessor for the current source window.  Usually there is only one
 160    source window (either source or disassembly), but both can be
 161    displayed at the same time.  */
 162 struct tui_list *
 163 tui_source_windows (void)
 164 {
 165   return &source_windows;
 166 }
 167
 168
 169 /* Clear the list of source windows.  Usually there is only one source
 170    window (either source or disassembly), but both can be displayed at
 171    the same time.  */
 172 void
 173 tui_clear_source_windows (void)
 174 {
 175   source_windows.list[0] = NULL;
 176   source_windows.list[1] = NULL;
 177   source_windows.count = 0;
 178 }
 179
 180
 181 /* Clear the pertinant detail in the source windows.  */
 182 void
 183 tui_clear_source_windows_detail (void)
 184 {
 185   int i;
 186
 187   for (i = 0; i < (tui_source_windows ())->count; i++)
 188     tui_clear_win_detail ((tui_source_windows ())->list[i]);
 189 }
 190
 191
 192 /* Add a window to the list of source windows.  Usually there is only
 193    one source window (either source or disassembly), but both can be
 194    displayed at the same time.  */
 195 void
 196 tui_add_to_source_windows (struct tui_win_info *win_info)
 197 {
 198   if (source_windows.count < 2)
 199     source_windows.list[source_windows.count++] = (void *) win_info;
 200 }
 201
 202
 203 /* Clear the pertinant detail in the windows.  */
 204 void
 205 tui_clear_win_detail (struct tui_win_info *win_info)
 206 {
 207   if (win_info != NULL)
 208     {
 209       switch (win_info->generic.type)
 210         {
 211         case SRC_WIN:
 212         case DISASSEM_WIN:
 213           win_info->detail.source_info.gdbarch = NULL;
 214           win_info->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
 215           win_info->detail.source_info.start_line_or_addr.u.addr = 0;
 216           win_info->detail.source_info.horizontal_offset = 0;
 217           break;
 218         case CMD_WIN:
 219           win_info->detail.command_info.cur_line =
 220             win_info->detail.command_info.curch = 0;
 221           break;
 222         case DATA_WIN:
 223           win_info->detail.data_display_info.data_content =
 224             (tui_win_content) NULL;
 225           win_info->detail.data_display_info.data_content_count = 0;
 226           win_info->detail.data_display_info.regs_content =
 227             (tui_win_content) NULL;
 228           win_info->detail.data_display_info.regs_content_count = 0;
 229           win_info->detail.data_display_info.regs_display_type =
 230             TUI_UNDEFINED_REGS;
 231           win_info->detail.data_display_info.regs_column_count = 1;
 232           win_info->detail.data_display_info.display_regs = FALSE;
 233           break;
 234         default:
 235           break;
 236         }
 237     }
 238 }
 239
 240
 241 /* Accessor for the source execution info ptr.  */
 242 struct tui_gen_win_info *
 243 tui_source_exec_info_win_ptr (void)
 244 {
 245   return &exec_info[0];
 246 }
 247
 248
 249 /* Accessor for the disassem execution info ptr.  */
 250 struct tui_gen_win_info *
 251 tui_disassem_exec_info_win_ptr (void)
 252 {
 253   return &exec_info[1];
 254 }
 255
 256
 257 /* Accessor for the locator win info.  Answers a pointer to the static
 258    locator win info struct.  */
 259 struct tui_gen_win_info *
 260 tui_locator_win_info_ptr (void)
 261 {
 262   return &_locator;
 263 }
 264
 265
 266 /* Accessor for the term_height.  */
 267 int
 268 tui_term_height (void)
 269 {
 270   return term_height;
 271 }
 272
 273
 274 /* Mutator for the term height.  */
 275 void
 276 tui_set_term_height_to (int h)
 277 {
 278   term_height = h;
 279 }
 280
 281
 282 /* Accessor for the term_width.  */
 283 int
 284 tui_term_width (void)
 285 {
 286   return term_width;
 287 }
 288
 289
 290 /* Mutator for the term_width.  */
 291 void
 292 tui_set_term_width_to (int w)
 293 {
 294   term_width = w;
 295 }
 296
 297
 298 /* Accessor for the current layout.  */
 299 enum tui_layout_type
 300 tui_current_layout (void)
 301 {
 302   return current_layout;
 303 }
 304
 305
 306 /* Mutator for the current layout.  */
 307 void
 308 tui_set_current_layout_to (enum tui_layout_type new_layout)
 309 {
 310   current_layout = new_layout;
 311 }
 312
 313
 314 /* Set the origin of the window.  */
 315 void
 316 set_gen_win_origin (struct tui_gen_win_info *win_info,
 317                     int x, int y)
 318 {
 319   win_info->origin.x = x;
 320   win_info->origin.y = y;
 321 }
 322
 323
 324 /*****************************
 325 ** OTHER PUBLIC FUNCTIONS
 326 *****************************/
 327
 328
 329 /* Answer the next window in the list, cycling back to the top if
 330    necessary.  */
 331 struct tui_win_info *
 332 tui_next_win (struct tui_win_info *cur_win)
 333 {
 334   enum tui_win_type type = cur_win->generic.type;
 335   struct tui_win_info *next_win = (struct tui_win_info *) NULL;
 336
 337   if (cur_win->generic.type == CMD_WIN)
 338     type = SRC_WIN;
 339   else
 340     type = cur_win->generic.type + 1;
 341   while (type != cur_win->generic.type && (next_win == NULL))
 342     {
 343       if (tui_win_list[type]
 344           && tui_win_list[type]->generic.is_visible)
 345         next_win = tui_win_list[type];
 346       else
 347         {
 348           if (type == CMD_WIN)
 349             type = SRC_WIN;
 350           else
 351             type++;
 352         }
 353     }
 354
 355   return next_win;
 356 }
 357
 358
 359 /* Answer the prev window in the list, cycling back to the bottom if
 360    necessary.  */
 361 struct tui_win_info *
 362 tui_prev_win (struct tui_win_info *cur_win)
 363 {
 364   enum tui_win_type type = cur_win->generic.type;
 365   struct tui_win_info *prev = (struct tui_win_info *) NULL;
 366
 367   if (cur_win->generic.type == SRC_WIN)
 368     type = CMD_WIN;
 369   else
 370     type = cur_win->generic.type - 1;
 371   while (type != cur_win->generic.type && (prev == NULL))
 372     {
 373       if (tui_win_list[type]
 374           && tui_win_list[type]->generic.is_visible)
 375         prev = tui_win_list[type];
 376       else
 377         {
 378           if (type == SRC_WIN)
 379             type = CMD_WIN;
 380           else
 381             type--;
 382         }
 383     }
 384
 385   return prev;
 386 }
 387
 388
 389 /* Answer the window represented by name.  */
 390 struct tui_win_info *
 391 tui_partial_win_by_name (char *name)
 392 {
 393   struct tui_win_info *win_info = (struct tui_win_info *) NULL;
 394
 395   if (name != (char *) NULL)
 396     {
 397       int i = 0;
 398
 399       while (i < MAX_MAJOR_WINDOWS && win_info == NULL)
 400         {
 401           if (tui_win_list[i] != 0)
 402             {
 403               char *cur_name = tui_win_name (&tui_win_list[i]->generic);
 404
 405               if (strlen (name) <= strlen (cur_name)
 406                   && strncmp (name, cur_name, strlen (name)) == 0)
 407                 win_info = tui_win_list[i];
 408             }
 409           i++;
 410         }
 411     }
 412
 413   return win_info;
 414 }
 415
 416
 417 /* Answer the name of the window.  */
 418 char *
 419 tui_win_name (struct tui_gen_win_info *win_info)
 420 {
 421   char *name = (char *) NULL;
 422
 423   switch (win_info->type)
 424     {
 425     case SRC_WIN:
 426       name = SRC_NAME;
 427       break;
 428     case CMD_WIN:
 429       name = CMD_NAME;
 430       break;
 431     case DISASSEM_WIN:
 432       name = DISASSEM_NAME;
 433       break;
 434     case DATA_WIN:
 435       name = DATA_NAME;
 436       break;
 437     default:
 438       name = "";
 439       break;
 440     }
 441
 442   return name;
 443 }
 444
 445
 446 void
 447 tui_initialize_static_data (void)
 448 {
 449   tui_init_generic_part (tui_source_exec_info_win_ptr ());
 450   tui_init_generic_part (tui_disassem_exec_info_win_ptr ());
 451   tui_init_generic_part (tui_locator_win_info_ptr ());
 452 }
 453
 454
 455 struct tui_gen_win_info *
 456 tui_alloc_generic_win_info (void)
 457 {
 458   struct tui_gen_win_info *win;
 459
 460   if ((win = XMALLOC (struct tui_gen_win_info)) != NULL)
 461     tui_init_generic_part (win);
 462
 463   return win;
 464 }
 465
 466
 467 void
 468 tui_init_generic_part (struct tui_gen_win_info *win)
 469 {
 470   win->width =
 471     win->height =
 472     win->origin.x =
 473     win->origin.y =
 474     win->viewport_height =
 475     win->content_size =
 476     win->last_visible_line = 0;
 477   win->handle = (WINDOW *) NULL;
 478   win->content = NULL;
 479   win->content_in_use =
 480     win->is_visible = FALSE;
 481   win->title = 0;
 482 }
 483
 484
 485 /* init_content_element().
 486  */
 487 static void
 488 init_content_element (struct tui_win_element *element,
 489                       enum tui_win_type type)
 490 {
 491   element->highlight = FALSE;
 492   switch (type)
 493     {
 494     case SRC_WIN:
 495     case DISASSEM_WIN:
 496       element->which_element.source.line = (char *) NULL;
 497       element->which_element.source.line_or_addr.loa = LOA_LINE;
 498       element->which_element.source.line_or_addr.u.line_no = 0;
 499       element->which_element.source.is_exec_point = FALSE;
 500       element->which_element.source.has_break = FALSE;
 501       break;
 502     case DATA_WIN:
 503       tui_init_generic_part (&element->which_element.data_window);
 504       element->which_element.data_window.type = DATA_ITEM_WIN;
 505       ((struct tui_gen_win_info *)
 506        &element->which_element.data_window)->content =
 507         (void **) tui_alloc_content (1, DATA_ITEM_WIN);
 508       ((struct tui_gen_win_info *)
 509        & element->which_element.data_window)->content_size = 1;
 510       break;
 511     case CMD_WIN:
 512       element->which_element.command.line = (char *) NULL;
 513       break;
 514     case DATA_ITEM_WIN:
 515       element->which_element.data.name = (char *) NULL;
 516       element->which_element.data.type = TUI_REGISTER;
 517       element->which_element.data.item_no = UNDEFINED_ITEM;
 518       element->which_element.data.value = NULL;
 519       element->which_element.data.highlight = FALSE;
 520       element->which_element.data.content = (char*) NULL;
 521       break;
 522     case LOCATOR_WIN:
 523       element->which_element.locator.file_name[0] =
 524         element->which_element.locator.proc_name[0] = (char) 0;
 525       element->which_element.locator.line_no = 0;
 526       element->which_element.locator.addr = 0;
 527       break;
 528     case EXEC_INFO_WIN:
 529       memset(element->which_element.simple_string, ' ',
 530              sizeof(element->which_element.simple_string));
 531       break;
 532     default:
 533       break;
 534     }
 535 }
 536
 537 static void
 538 init_win_info (struct tui_win_info *win_info)
 539 {
 540   tui_init_generic_part (&win_info->generic);
 541   win_info->can_highlight =
 542     win_info->is_highlighted = FALSE;
 543   switch (win_info->generic.type)
 544     {
 545     case SRC_WIN:
 546     case DISASSEM_WIN:
 547       win_info->detail.source_info.execution_info
 548         = (struct tui_gen_win_info *) NULL;
 549       win_info->detail.source_info.has_locator = FALSE;
 550       win_info->detail.source_info.horizontal_offset = 0;
 551       win_info->detail.source_info.gdbarch = NULL;
 552       win_info->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
 553       win_info->detail.source_info.start_line_or_addr.u.addr = 0;
 554       win_info->detail.source_info.filename = 0;
 555       break;
 556     case DATA_WIN:
 557       win_info->detail.data_display_info.data_content = (tui_win_content) NULL;
 558       win_info->detail.data_display_info.data_content_count = 0;
 559       win_info->detail.data_display_info.regs_content = (tui_win_content) NULL;
 560       win_info->detail.data_display_info.regs_content_count = 0;
 561       win_info->detail.data_display_info.regs_display_type =
 562         TUI_UNDEFINED_REGS;
 563       win_info->detail.data_display_info.regs_column_count = 1;
 564       win_info->detail.data_display_info.display_regs = FALSE;
 565       win_info->detail.data_display_info.current_group = 0;
 566       break;
 567     case CMD_WIN:
 568       win_info->detail.command_info.cur_line = 0;
 569       win_info->detail.command_info.curch = 0;
 570       break;
 571     default:
 572       win_info->detail.opaque = NULL;
 573       break;
 574     }
 575 }
 576
 577
 578 struct tui_win_info *
 579 tui_alloc_win_info (enum tui_win_type type)
 580 {
 581   struct tui_win_info *win_info;
 582
 583   win_info = XMALLOC (struct tui_win_info);
 584   if (win_info != NULL)
 585     {
 586       win_info->generic.type = type;
 587       init_win_info (win_info);
 588     }
 589
 590   return win_info;
 591 }
 592
 593
 594 /* Allocates the content and elements in a block.  */
 595 tui_win_content
 596 tui_alloc_content (int num_elements, enum tui_win_type type)
 597 {
 598   tui_win_content content;
 599   char *element_block_ptr;
 600   int i;
 601
 602   content = xmalloc (sizeof (struct tui_win_element *) *num_elements);
 603   if (content != NULL)
 604     {
 605       /*
 606        * All windows, except the data window, can allocate the
 607        * elements in a chunk.  The data window cannot because items
 608        * can be added/removed from the data display by the user at any
 609        * time.
 610        */
 611       if (type != DATA_WIN)
 612         {
 613           element_block_ptr =
 614             xmalloc (sizeof (struct tui_win_element) * num_elements);
 615           if (element_block_ptr != NULL)
 616             {
 617               for (i = 0; i < num_elements; i++)
 618                 {
 619                   content[i] = (struct tui_win_element *) element_block_ptr;
 620                   init_content_element (content[i], type);
 621                   element_block_ptr += sizeof (struct tui_win_element);
 622                 }
 623             }
 624           else
 625             {
 626               xfree (content);
 627               content = (tui_win_content) NULL;
 628             }
 629         }
 630     }
 631
 632   return content;
 633 }
 634
 635
 636 /* Adds the input number of elements to the windows's content.  If no
 637    content has been allocated yet, alloc_content() is called to do
 638    this.  The index of the first element added is returned, unless
 639    there is a memory allocation error, in which case, (-1) is
 640    returned.  */
 641 int
 642 tui_add_content_elements (struct tui_gen_win_info *win_info,
 643                           int num_elements)
 644 {
 645   struct tui_win_element *element_ptr;
 646   int i, index_start;
 647
 648   if (win_info->content == NULL)
 649     {
 650       win_info->content = (void **) tui_alloc_content (num_elements,
 651                                                        win_info->type);
 652       index_start = 0;
 653     }
 654   else
 655     index_start = win_info->content_size;
 656   if (win_info->content != NULL)
 657     {
 658       for (i = index_start; (i < num_elements + index_start); i++)
 659         {
 660           if ((element_ptr = XMALLOC (struct tui_win_element)) != NULL)
 661             {
 662               win_info->content[i] = (void *) element_ptr;
 663               init_content_element (element_ptr, win_info->type);
 664               win_info->content_size++;
 665             }
 666           else  /* Things must be really hosed now!  We ran out of
 667                    memory!?  */
 668             return (-1);
 669         }
 670     }
 671
 672   return index_start;
 673 }
 674
 675
 676 /* Delete all curses windows associated with win_info, leaving
 677    everything else intact.  */
 678 void
 679 tui_del_window (struct tui_win_info *win_info)
 680 {
 681   struct tui_gen_win_info *generic_win;
 682
 683   switch (win_info->generic.type)
 684     {
 685     case SRC_WIN:
 686     case DISASSEM_WIN:
 687       generic_win = tui_locator_win_info_ptr ();
 688       if (generic_win != (struct tui_gen_win_info *) NULL)
 689         {
 690           tui_delete_win (generic_win->handle);
 691           generic_win->handle = (WINDOW *) NULL;
 692           generic_win->is_visible = FALSE;
 693         }
 694       if (win_info->detail.source_info.filename)
 695         {
 696           xfree (win_info->detail.source_info.filename);
 697           win_info->detail.source_info.filename = 0;
 698         }
 699       generic_win = win_info->detail.source_info.execution_info;
 700       if (generic_win != (struct tui_gen_win_info *) NULL)
 701         {
 702           tui_delete_win (generic_win->handle);
 703           generic_win->handle = (WINDOW *) NULL;
 704           generic_win->is_visible = FALSE;
 705         }
 706       break;
 707     case DATA_WIN:
 708       if (win_info->generic.content != NULL)
 709         {
 710           tui_del_data_windows (win_info->detail.data_display_info.regs_content,
 711                                 win_info->detail.data_display_info.regs_content_count);
 712           tui_del_data_windows (win_info->detail.data_display_info.data_content,
 713                                 win_info->detail.data_display_info.data_content_count);
 714         }
 715       break;
 716     default:
 717       break;
 718     }
 719   if (win_info->generic.handle != (WINDOW *) NULL)
 720     {
 721       tui_delete_win (win_info->generic.handle);
 722       win_info->generic.handle = (WINDOW *) NULL;
 723       win_info->generic.is_visible = FALSE;
 724     }
 725 }
 726
 727
 728 void
 729 tui_free_window (struct tui_win_info *win_info)
 730 {
 731   struct tui_gen_win_info *generic_win;
 732
 733   switch (win_info->generic.type)
 734     {
 735     case SRC_WIN:
 736     case DISASSEM_WIN:
 737       generic_win = tui_locator_win_info_ptr ();
 738       if (generic_win != (struct tui_gen_win_info *) NULL)
 739         {
 740           tui_delete_win (generic_win->handle);
 741           generic_win->handle = (WINDOW *) NULL;
 742         }
 743       tui_free_win_content (generic_win);
 744       if (win_info->detail.source_info.filename)
 745         {
 746           xfree (win_info->detail.source_info.filename);
 747           win_info->detail.source_info.filename = 0;
 748         }
 749       generic_win = win_info->detail.source_info.execution_info;
 750       if (generic_win != (struct tui_gen_win_info *) NULL)
 751         {
 752           tui_delete_win (generic_win->handle);
 753           generic_win->handle = (WINDOW *) NULL;
 754           tui_free_win_content (generic_win);
 755         }
 756       break;
 757     case DATA_WIN:
 758       if (win_info->generic.content != NULL)
 759         {
 760           tui_free_data_content (win_info->detail.data_display_info.regs_content,
 761                                  win_info->detail.data_display_info.regs_content_count);
 762           win_info->detail.data_display_info.regs_content =
 763             (tui_win_content) NULL;
 764           win_info->detail.data_display_info.regs_content_count = 0;
 765           tui_free_data_content (win_info->detail.data_display_info.data_content,
 766                                  win_info->detail.data_display_info.data_content_count);
 767           win_info->detail.data_display_info.data_content =
 768             (tui_win_content) NULL;
 769           win_info->detail.data_display_info.data_content_count = 0;
 770           win_info->detail.data_display_info.regs_display_type =
 771             TUI_UNDEFINED_REGS;
 772           win_info->detail.data_display_info.regs_column_count = 1;
 773           win_info->detail.data_display_info.display_regs = FALSE;
 774           win_info->generic.content = NULL;
 775           win_info->generic.content_size = 0;
 776         }
 777       break;
 778     default:
 779       break;
 780     }
 781   if (win_info->generic.handle != (WINDOW *) NULL)
 782     {
 783       tui_delete_win (win_info->generic.handle);
 784       win_info->generic.handle = (WINDOW *) NULL;
 785       tui_free_win_content (&win_info->generic);
 786     }
 787   if (win_info->generic.title)
 788     xfree (win_info->generic.title);
 789   xfree (win_info);
 790 }
 791
 792
 793 void
 794 tui_free_all_source_wins_content (void)
 795 {
 796   int i;
 797
 798   for (i = 0; i < (tui_source_windows ())->count; i++)
 799     {
 800       struct tui_win_info *win_info = (tui_source_windows ())->list[i];
 801
 802       if (win_info != NULL)
 803         {
 804           tui_free_win_content (&(win_info->generic));
 805           tui_free_win_content (win_info->detail.source_info.execution_info);
 806         }
 807     }
 808 }
 809
 810
 811 void
 812 tui_free_win_content (struct tui_gen_win_info *win_info)
 813 {
 814   if (win_info->content != NULL)
 815     {
 816       free_content ((tui_win_content) win_info->content,
 817                    win_info->content_size,
 818                    win_info->type);
 819       win_info->content = NULL;
 820     }
 821   win_info->content_size = 0;
 822 }
 823
 824
 825 void
 826 tui_del_data_windows (tui_win_content content,
 827                       int content_size)
 828 {
 829   int i;
 830
 831   /* Remember that data window content elements are of type struct
 832      tui_gen_win_info *, each of which whose single element is a data
 833      element.  */
 834   for (i = 0; i < content_size; i++)
 835     {
 836       struct tui_gen_win_info *generic_win
 837         = &content[i]->which_element.data_window;
 838
 839       if (generic_win != (struct tui_gen_win_info *) NULL)
 840         {
 841           tui_delete_win (generic_win->handle);
 842           generic_win->handle = (WINDOW *) NULL;
 843           generic_win->is_visible = FALSE;
 844         }
 845     }
 846 }
 847
 848
 849 void
 850 tui_free_data_content (tui_win_content content,
 851                        int content_size)
 852 {
 853   int i;
 854
 855   /* Remember that data window content elements are of type struct
 856      tui_gen_win_info *, each of which whose single element is a data
 857      element.  */
 858   for (i = 0; i < content_size; i++)
 859     {
 860       struct tui_gen_win_info *generic_win
 861         = &content[i]->which_element.data_window;
 862
 863       if (generic_win != (struct tui_gen_win_info *) NULL)
 864         {
 865           tui_delete_win (generic_win->handle);
 866           generic_win->handle = (WINDOW *) NULL;
 867           tui_free_win_content (generic_win);
 868         }
 869     }
 870   free_content (content,
 871                 content_size,
 872                 DATA_WIN);
 873 }
 874
 875
 876 /**********************************
 877 ** LOCAL STATIC FUNCTIONS        **
 878 **********************************/
 879
 880
 881 static void
 882 free_content (tui_win_content content,
 883               int content_size,
 884               enum tui_win_type win_type)
 885 {
 886   if (content != (tui_win_content) NULL)
 887     {
 888       free_content_elements (content, content_size, win_type);
 889       xfree (content);
 890     }
 891 }
 892
 893
 894 /* free_content_elements().
 895  */
 896 static void
 897 free_content_elements (tui_win_content content,
 898                        int content_size,
 899                        enum tui_win_type type)
 900 {
 901   if (content != (tui_win_content) NULL)
 902     {
 903       int i;
 904
 905       if (type == SRC_WIN || type == DISASSEM_WIN)
 906         {
 907           /* Free whole source block.  */
 908           xfree (content[0]->which_element.source.line);
 909         }
 910       else
 911         {
 912           for (i = 0; i < content_size; i++)
 913             {
 914               struct tui_win_element *element;
 915
 916               element = content[i];
 917               if (element != (struct tui_win_element *) NULL)
 918                 {
 919                   switch (type)
 920                     {
 921                     case DATA_WIN:
 922                       xfree (element);
 923                       break;
 924                     case DATA_ITEM_WIN:
 925                       /* Note that data elements are not allocated in
 926                          a single block, but individually, as
 927                          needed.  */
 928                       if (element->which_element.data.type != TUI_REGISTER)
 929                         xfree ((void *)element->which_element.data.name);
 930                       xfree (element->which_element.data.value);
 931                       xfree (element->which_element.data.content);
 932                       xfree (element);
 933                       break;
 934                     case CMD_WIN:
 935                       xfree (element->which_element.command.line);
 936                       break;
 937                     default:
 938                       break;
 939                     }
 940                 }
 941             }
 942         }
 943       if (type != DATA_WIN && type != DATA_ITEM_WIN)
 944         xfree (content[0]);     /* Free the element block.  */
 945     }
 946 }