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