gnu/dist/gdb6/gdb/tui/tui-windata.c

   1 /* Data/register window display.
   2
   3    Copyright (C) 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., 51 Franklin Street, Fifth Floor,
  23    Boston, MA 02110-1301, 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 #include "gdb_string.h"
  32 #include "gdb_curses.h"
  33
  34
  35 /*****************************************
  36 ** STATIC LOCAL FUNCTIONS FORWARD DECLS    **
  37 ******************************************/
  38
  39
  40
  41 /*****************************************
  42 ** PUBLIC FUNCTIONS                        **
  43 ******************************************/
  44
  45
  46 /* Answer the index first element displayed.  If none are displayed,
  47    then return (-1).  */
  48 int
  49 tui_first_data_item_displayed (void)
  50 {
  51   int element_no = (-1);
  52   int i;
  53
  54   for (i = 0; (i < TUI_DATA_WIN->generic.content_size && element_no < 0); i++)
  55     {
  56       struct tui_gen_win_info * data_item_win;
  57
  58       data_item_win = &((tui_win_content)
  59                       TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
  60       if (data_item_win->handle != (WINDOW *) NULL && data_item_win->is_visible)
  61         element_no = i;
  62     }
  63
  64   return element_no;
  65 }
  66
  67
  68 /* Answer the index of the first element in line_no.  If line_no is
  69    past the data area (-1) is returned.  */
  70 int
  71 tui_first_data_element_no_in_line (int line_no)
  72 {
  73   int first_element_no = (-1);
  74
  75   /*
  76      ** First see if there is a register on line_no, and if so, set the
  77      ** first element number
  78    */
  79   if ((first_element_no = tui_first_reg_element_no_inline (line_no)) == -1)
  80     {                           /*
  81                                    ** Looking at the general data, the 1st element on line_no
  82                                  */
  83     }
  84
  85   return first_element_no;
  86 }
  87
  88
  89 /* Function to delete all the item windows in the data window.  This
  90    is usually done when the data window is scrolled.  */
  91 void
  92 tui_delete_data_content_windows (void)
  93 {
  94   int i;
  95   struct tui_gen_win_info * data_item_win_ptr;
  96
  97   for (i = 0; (i < TUI_DATA_WIN->generic.content_size); i++)
  98     {
  99       data_item_win_ptr = &((tui_win_content)
 100                       TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
 101       tui_delete_win (data_item_win_ptr->handle);
 102       data_item_win_ptr->handle = (WINDOW *) NULL;
 103       data_item_win_ptr->is_visible = FALSE;
 104     }
 105 }
 106
 107
 108 void
 109 tui_erase_data_content (char *prompt)
 110 {
 111   werase (TUI_DATA_WIN->generic.handle);
 112   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 113   if (prompt != (char *) NULL)
 114     {
 115       int half_width = (TUI_DATA_WIN->generic.width - 2) / 2;
 116       int x_pos;
 117
 118       if (strlen (prompt) >= half_width)
 119         x_pos = 1;
 120       else
 121         x_pos = half_width - strlen (prompt);
 122       mvwaddstr (TUI_DATA_WIN->generic.handle,
 123                  (TUI_DATA_WIN->generic.height / 2),
 124                  x_pos,
 125                  prompt);
 126     }
 127   wrefresh (TUI_DATA_WIN->generic.handle);
 128 }
 129
 130
 131 /* This function displays the data that is in the data window's
 132    content.  It does not set the content.  */
 133 void
 134 tui_display_all_data (void)
 135 {
 136   if (TUI_DATA_WIN->generic.content_size <= 0)
 137     tui_erase_data_content (NO_DATA_STRING);
 138   else
 139     {
 140       tui_erase_data_content ((char *) NULL);
 141       tui_delete_data_content_windows ();
 142       tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 143       tui_display_registers_from (0);
 144       /*
 145          ** Then display the other data
 146        */
 147       if (TUI_DATA_WIN->detail.data_display_info.data_content !=
 148           (tui_win_content) NULL &&
 149           TUI_DATA_WIN->detail.data_display_info.data_content_count > 0)
 150         {
 151         }
 152     }
 153 }
 154
 155
 156 /* Function to display the data starting at line, line_no, in the data
 157    window.  */
 158 void
 159 tui_display_data_from_line (int line_no)
 160 {
 161   int _line_no = line_no;
 162
 163   if (line_no < 0)
 164     _line_no = 0;
 165
 166   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 167
 168   /* there is no general data, force regs to display (if there are any) */
 169   if (TUI_DATA_WIN->detail.data_display_info.data_content_count <= 0)
 170     tui_display_registers_from_line (_line_no, TRUE);
 171   else
 172     {
 173       int element_no, start_line_no;
 174       int regs_last_line = tui_last_regs_line_no ();
 175
 176
 177       /* display regs if we can */
 178       if (tui_display_registers_from_line (_line_no, FALSE) < 0)
 179         {                       /*
 180                                    ** _line_no is past the regs display, so calc where the
 181                                    ** start data element is
 182                                  */
 183           if (regs_last_line < _line_no)
 184             {                   /* figure out how many lines each element is to obtain
 185                                    the start element_no */
 186             }
 187         }
 188       else
 189         {                       /*
 190                                    ** calculate the starting element of the data display, given
 191                                    ** regs_last_line and how many lines each element is, up to
 192                                    ** _line_no
 193                                  */
 194         }
 195       /* Now display the data , starting at element_no */
 196     }
 197 }
 198
 199
 200 /* Display data starting at element element_no.   */
 201 void
 202 tui_display_data_from (int element_no, int reuse_windows)
 203 {
 204   int first_line = (-1);
 205
 206   if (element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 207     first_line = tui_line_from_reg_element_no (element_no);
 208   else
 209     {                           /* calculate the first_line from the element number */
 210     }
 211
 212   if (first_line >= 0)
 213     {
 214       tui_erase_data_content ((char *) NULL);
 215       if (!reuse_windows)
 216         tui_delete_data_content_windows ();
 217       tui_display_data_from_line (first_line);
 218     }
 219 }
 220
 221
 222 /* Function to redisplay the contents of the data window.  */
 223 void
 224 tui_refresh_data_win (void)
 225 {
 226   tui_erase_data_content ((char *) NULL);
 227   if (TUI_DATA_WIN->generic.content_size > 0)
 228     {
 229       int first_element = tui_first_data_item_displayed ();
 230
 231       if (first_element >= 0)   /* re-use existing windows */
 232         tui_display_data_from (first_element, TRUE);
 233     }
 234 }
 235
 236
 237 /* Function to check the data values and hilite any that have changed.  */
 238 void
 239 tui_check_data_values (struct frame_info *frame)
 240 {
 241   tui_check_register_values (frame);
 242
 243   /* Now check any other data values that there are */
 244   if (TUI_DATA_WIN != NULL && TUI_DATA_WIN->generic.is_visible)
 245     {
 246       int i;
 247
 248       for (i = 0; TUI_DATA_WIN->detail.data_display_info.data_content_count; i++)
 249         {
 250 #ifdef LATER
 251           tui_data_element_ptr data_element_ptr;
 252           struct tui_gen_win_info * data_item_win_ptr;
 253           Opaque new_value;
 254
 255           data_item_ptr = &TUI_DATA_WIN->detail.data_display_info.
 256             data_content[i]->which_element.data_window;
 257           data_element_ptr = &((tui_win_content)
 258                              data_item_win_ptr->content)[0]->which_element.data;
 259           if value
 260             has changed (data_element_ptr, frame, &new_value)
 261             {
 262               data_element_ptr->value = new_value;
 263               update the display with the new value, hiliting it.
 264             }
 265 #endif
 266         }
 267     }
 268 }
 269
 270
 271 /* Scroll the data window vertically forward or backward.   */
 272 void
 273 tui_vertical_data_scroll (enum tui_scroll_direction scroll_direction, int num_to_scroll)
 274 {
 275   int first_element_no;
 276   int first_line = (-1);
 277
 278   first_element_no = tui_first_data_item_displayed ();
 279   if (first_element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 280     first_line = tui_line_from_reg_element_no (first_element_no);
 281   else
 282     {                           /* calculate the first line from the element number which is in
 283                                    ** the general data content
 284                                  */
 285     }
 286
 287   if (first_line >= 0)
 288     {
 289       int last_element_no, last_line;
 290
 291       if (scroll_direction == FORWARD_SCROLL)
 292         first_line += num_to_scroll;
 293       else
 294         first_line -= num_to_scroll;
 295       tui_erase_data_content ((char *) NULL);
 296       tui_delete_data_content_windows ();
 297       tui_display_data_from_line (first_line);
 298     }
 299 }
 300
 301
 302 /*****************************************
 303 ** STATIC LOCAL FUNCTIONS               **
 304 ******************************************/