gdb/tui/tui-windata.c

   1 /* Data/register window display.
   2
   3    Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
   4    Foundation, Inc.
   5
   6    Contributed by Hewlett-Packard Company.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330,
  23    Boston, MA 02111-1307, USA.  */
  24
  25 #include "defs.h"
  26 #include "tui/tui.h"
  27 #include "tui/tui-data.h"
  28 #include "tui/tui-wingeneral.h"
  29 #include "tui/tui-regs.h"
  30
  31 #ifdef HAVE_NCURSES_H
  32 #include <ncurses.h>
  33 #else
  34 #ifdef HAVE_CURSES_H
  35 #include <curses.h>
  36 #endif
  37 #endif
  38
  39
  40 /*****************************************
  41 ** STATIC LOCAL FUNCTIONS FORWARD DECLS    **
  42 ******************************************/
  43
  44
  45
  46 /*****************************************
  47 ** PUBLIC FUNCTIONS                        **
  48 ******************************************/
  49
  50
  51 /* Answer the index first element displayed.  If none are displayed,
  52    then return (-1).  */
  53 int
  54 tui_first_data_item_displayed (void)
  55 {
  56   int element_no = (-1);
  57   int i;
  58
  59   for (i = 0; (i < TUI_DATA_WIN->generic.content_size && element_no < 0); i++)
  60     {
  61       struct tui_gen_win_info * data_item_win;
  62
  63       data_item_win = &((tui_win_content)
  64                       TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
  65       if (data_item_win->handle != (WINDOW *) NULL && data_item_win->is_visible)
  66         element_no = i;
  67     }
  68
  69   return element_no;
  70 }
  71
  72
  73 /* Answer the index of the first element in line_no.  If line_no is
  74    past the data area (-1) is returned.  */
  75 int
  76 tui_first_data_element_no_in_line (int line_no)
  77 {
  78   int first_element_no = (-1);
  79
  80   /*
  81      ** First see if there is a register on line_no, and if so, set the
  82      ** first element number
  83    */
  84   if ((first_element_no = tui_first_reg_element_no_inline (line_no)) == -1)
  85     {                           /*
  86                                    ** Looking at the general data, the 1st element on line_no
  87                                  */
  88     }
  89
  90   return first_element_no;
  91 }
  92
  93
  94 /* Function to delete all the item windows in the data window.  This
  95    is usually done when the data window is scrolled.  */
  96 void
  97 tui_delete_data_content_windows (void)
  98 {
  99   int i;
 100   struct tui_gen_win_info * data_item_win_ptr;
 101
 102   for (i = 0; (i < TUI_DATA_WIN->generic.content_size); i++)
 103     {
 104       data_item_win_ptr = &((tui_win_content)
 105                       TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
 106       tui_delete_win (data_item_win_ptr->handle);
 107       data_item_win_ptr->handle = (WINDOW *) NULL;
 108       data_item_win_ptr->is_visible = FALSE;
 109     }
 110 }
 111
 112
 113 void
 114 tui_erase_data_content (char *prompt)
 115 {
 116   werase (TUI_DATA_WIN->generic.handle);
 117   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 118   if (prompt != (char *) NULL)
 119     {
 120       int half_width = (TUI_DATA_WIN->generic.width - 2) / 2;
 121       int x_pos;
 122
 123       if (strlen (prompt) >= half_width)
 124         x_pos = 1;
 125       else
 126         x_pos = half_width - strlen (prompt);
 127       mvwaddstr (TUI_DATA_WIN->generic.handle,
 128                  (TUI_DATA_WIN->generic.height / 2),
 129                  x_pos,
 130                  prompt);
 131     }
 132   wrefresh (TUI_DATA_WIN->generic.handle);
 133 }
 134
 135
 136 /* This function displays the data that is in the data window's
 137    content.  It does not set the content.  */
 138 void
 139 tui_display_all_data (void)
 140 {
 141   if (TUI_DATA_WIN->generic.content_size <= 0)
 142     tui_erase_data_content (NO_DATA_STRING);
 143   else
 144     {
 145       tui_erase_data_content ((char *) NULL);
 146       tui_delete_data_content_windows ();
 147       tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 148       tui_display_registers_from (0);
 149       /*
 150          ** Then display the other data
 151        */
 152       if (TUI_DATA_WIN->detail.data_display_info.data_content !=
 153           (tui_win_content) NULL &&
 154           TUI_DATA_WIN->detail.data_display_info.data_content_count > 0)
 155         {
 156         }
 157     }
 158 }
 159
 160
 161 /* Function to display the data starting at line, line_no, in the data
 162    window.  */
 163 void
 164 tui_display_data_from_line (int line_no)
 165 {
 166   int _line_no = line_no;
 167
 168   if (line_no < 0)
 169     _line_no = 0;
 170
 171   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 172
 173   /* there is no general data, force regs to display (if there are any) */
 174   if (TUI_DATA_WIN->detail.data_display_info.data_content_count <= 0)
 175     tui_display_registers_from_line (_line_no, TRUE);
 176   else
 177     {
 178       int element_no, start_line_no;
 179       int regs_last_line = tui_last_regs_line_no ();
 180
 181
 182       /* display regs if we can */
 183       if (tui_display_registers_from_line (_line_no, FALSE) < 0)
 184         {                       /*
 185                                    ** _line_no is past the regs display, so calc where the
 186                                    ** start data element is
 187                                  */
 188           if (regs_last_line < _line_no)
 189             {                   /* figure out how many lines each element is to obtain
 190                                    the start element_no */
 191             }
 192         }
 193       else
 194         {                       /*
 195                                    ** calculate the starting element of the data display, given
 196                                    ** regs_last_line and how many lines each element is, up to
 197                                    ** _line_no
 198                                  */
 199         }
 200       /* Now display the data , starting at element_no */
 201     }
 202 }
 203
 204
 205 /* Display data starting at element element_no.   */
 206 void
 207 tui_display_data_from (int element_no, int reuse_windows)
 208 {
 209   int first_line = (-1);
 210
 211   if (element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 212     first_line = tui_line_from_reg_element_no (element_no);
 213   else
 214     {                           /* calculate the first_line from the element number */
 215     }
 216
 217   if (first_line >= 0)
 218     {
 219       tui_erase_data_content ((char *) NULL);
 220       if (!reuse_windows)
 221         tui_delete_data_content_windows ();
 222       tui_display_data_from_line (first_line);
 223     }
 224 }
 225
 226
 227 /* Function to redisplay the contents of the data window.  */
 228 void
 229 tui_refresh_data_win (void)
 230 {
 231   tui_erase_data_content ((char *) NULL);
 232   if (TUI_DATA_WIN->generic.content_size > 0)
 233     {
 234       int first_element = tui_first_data_item_displayed ();
 235
 236       if (first_element >= 0)   /* re-use existing windows */
 237         tui_display_data_from (first_element, TRUE);
 238     }
 239 }
 240
 241
 242 /* Function to check the data values and hilite any that have changed.  */
 243 void
 244 tui_check_data_values (struct frame_info *frame)
 245 {
 246   tui_check_register_values (frame);
 247
 248   /* Now check any other data values that there are */
 249   if (TUI_DATA_WIN != NULL && TUI_DATA_WIN->generic.is_visible)
 250     {
 251       int i;
 252
 253       for (i = 0; TUI_DATA_WIN->detail.data_display_info.data_content_count; i++)
 254         {
 255 #ifdef LATER
 256           tui_data_element_ptr data_element_ptr;
 257           struct tui_gen_win_info * data_item_win_ptr;
 258           Opaque new_value;
 259
 260           data_item_ptr = &TUI_DATA_WIN->detail.data_display_info.
 261             data_content[i]->which_element.data_window;
 262           data_element_ptr = &((tui_win_content)
 263                              data_item_win_ptr->content)[0]->which_element.data;
 264           if value
 265             has changed (data_element_ptr, frame, &new_value)
 266             {
 267               data_element_ptr->value = new_value;
 268               update the display with the new value, hiliting it.
 269             }
 270 #endif
 271         }
 272     }
 273 }
 274
 275
 276 /* Scroll the data window vertically forward or backward.   */
 277 void
 278 tui_vertical_data_scroll (enum tui_scroll_direction scroll_direction, int num_to_scroll)
 279 {
 280   int first_element_no;
 281   int first_line = (-1);
 282
 283   first_element_no = tui_first_data_item_displayed ();
 284   if (first_element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 285     first_line = tui_line_from_reg_element_no (first_element_no);
 286   else
 287     {                           /* calculate the first line from the element number which is in
 288                                    ** the general data content
 289                                  */
 290     }
 291
 292   if (first_line >= 0)
 293     {
 294       int last_element_no, last_line;
 295
 296       if (scroll_direction == FORWARD_SCROLL)
 297         first_line += num_to_scroll;
 298       else
 299         first_line -= num_to_scroll;
 300       tui_erase_data_content ((char *) NULL);
 301       tui_delete_data_content_windows ();
 302       tui_display_data_from_line (first_line);
 303     }
 304 }
 305
 306
 307 /*****************************************
 308 ** STATIC LOCAL FUNCTIONS               **
 309 ******************************************/