gdb/tui/tui-windata.c

   1 /* Data/register window display.
   2
   3    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007
   4    Free Software 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;
  55        i < TUI_DATA_WIN->generic.content_size && element_no < 0;
  56        i++)
  57     {
  58       struct tui_gen_win_info *data_item_win;
  59
  60       data_item_win = &((tui_win_content)
  61                         TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
  62       if (data_item_win->handle != (WINDOW *) NULL
  63           && data_item_win->is_visible)
  64         element_no = i;
  65     }
  66
  67   return element_no;
  68 }
  69
  70
  71 /* Answer the index of the first element in line_no.  If line_no is
  72    past the data area (-1) is returned.  */
  73 int
  74 tui_first_data_element_no_in_line (int line_no)
  75 {
  76   int first_element_no = (-1);
  77
  78   /* First see if there is a register on line_no, and if so, set the
  79      first element number.  */
  80   if ((first_element_no = tui_first_reg_element_no_inline (line_no)) == -1)
  81     { /* Looking at the general data, the 1st element on line_no.  */
  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       if (TUI_DATA_WIN->detail.data_display_info.data_content !=
 146           (tui_win_content) NULL
 147           && TUI_DATA_WIN->detail.data_display_info.data_content_count > 0)
 148         {
 149         }
 150     }
 151 }
 152
 153
 154 /* Function to display the data starting at line, line_no, in the data
 155    window.  */
 156 void
 157 tui_display_data_from_line (int line_no)
 158 {
 159   int _line_no = line_no;
 160
 161   if (line_no < 0)
 162     _line_no = 0;
 163
 164   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 165
 166   /* There is no general data, force regs to display (if there are
 167      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         { /* _line_no is past the regs display, so calc where the
 179              start data element is.  */
 180           if (regs_last_line < _line_no)
 181             { /* Figure out how many lines each element is to obtain
 182                  the start element_no.  */
 183             }
 184         }
 185       else
 186         { /* Calculate the starting element of the data display, given
 187              regs_last_line and how many lines each element is, up to
 188              _line_no.  */
 189         }
 190       /* Now display the data , starting at element_no.  */
 191     }
 192 }
 193
 194
 195 /* Display data starting at element element_no.  */
 196 void
 197 tui_display_data_from (int element_no, int reuse_windows)
 198 {
 199   int first_line = (-1);
 200
 201   if (element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 202     first_line = tui_line_from_reg_element_no (element_no);
 203   else
 204     { /* Calculate the first_line from the element number.  */
 205     }
 206
 207   if (first_line >= 0)
 208     {
 209       tui_erase_data_content ((char *) NULL);
 210       if (!reuse_windows)
 211         tui_delete_data_content_windows ();
 212       tui_display_data_from_line (first_line);
 213     }
 214 }
 215
 216
 217 /* Function to redisplay the contents of the data window.  */
 218 void
 219 tui_refresh_data_win (void)
 220 {
 221   tui_erase_data_content ((char *) NULL);
 222   if (TUI_DATA_WIN->generic.content_size > 0)
 223     {
 224       int first_element = tui_first_data_item_displayed ();
 225
 226       if (first_element >= 0)   /* Re-use existing windows.  */
 227         tui_display_data_from (first_element, TRUE);
 228     }
 229 }
 230
 231
 232 /* Function to check the data values and hilite any that have
 233    changed.  */
 234 void
 235 tui_check_data_values (struct frame_info *frame)
 236 {
 237   tui_check_register_values (frame);
 238
 239   /* Now check any other data values that there are.  */
 240   if (TUI_DATA_WIN != NULL && TUI_DATA_WIN->generic.is_visible)
 241     {
 242       int i;
 243
 244       for (i = 0;
 245            TUI_DATA_WIN->detail.data_display_info.data_content_count;
 246            i++)
 247         {
 248 #ifdef LATER
 249           tui_data_element_ptr data_element_ptr;
 250           struct tui_gen_win_info *data_item_win_ptr;
 251           Opaque new_value;
 252
 253           data_item_ptr = &TUI_DATA_WIN->detail.data_display_info.
 254             data_content[i]->which_element.data_window;
 255           data_element_ptr = &((tui_win_content)
 256                              data_item_win_ptr->content)[0]->which_element.data;
 257           if value
 258             has changed (data_element_ptr, frame, &new_value)
 259             {
 260               data_element_ptr->value = new_value;
 261               update the display with the new value, hiliting it.
 262             }
 263 #endif
 264         }
 265     }
 266 }
 267
 268
 269 /* Scroll the data window vertically forward or backward.  */
 270 void
 271 tui_vertical_data_scroll (enum tui_scroll_direction scroll_direction,
 272                           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   if (first_line >= 0)
 286     {
 287       int last_element_no, last_line;
 288
 289       if (scroll_direction == FORWARD_SCROLL)
 290         first_line += num_to_scroll;
 291       else
 292         first_line -= num_to_scroll;
 293       tui_erase_data_content ((char *) NULL);
 294       tui_delete_data_content_windows ();
 295       tui_display_data_from_line (first_line);
 296     }
 297 }
 298
 299
 300 /*****************************************
 301 ** STATIC LOCAL FUNCTIONS               **
 302 ******************************************/