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; (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   /* First see if there is a register on line_no, and if so, set the
  76      first element number.  */
  77   if ((first_element_no = tui_first_reg_element_no_inline (line_no)) == -1)
  78     { /* Looking at the general data, the 1st element on line_no.  */
  79     }
  80
  81   return first_element_no;
  82 }
  83
  84
  85 /* Function to delete all the item windows in the data window.  This
  86    is usually done when the data window is scrolled.  */
  87 void
  88 tui_delete_data_content_windows (void)
  89 {
  90   int i;
  91   struct tui_gen_win_info *data_item_win_ptr;
  92
  93   for (i = 0; (i < TUI_DATA_WIN->generic.content_size); i++)
  94     {
  95       data_item_win_ptr = &((tui_win_content)
  96                             TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
  97       tui_delete_win (data_item_win_ptr->handle);
  98       data_item_win_ptr->handle = (WINDOW *) NULL;
  99       data_item_win_ptr->is_visible = FALSE;
 100     }
 101 }
 102
 103
 104 void
 105 tui_erase_data_content (char *prompt)
 106 {
 107   werase (TUI_DATA_WIN->generic.handle);
 108   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 109   if (prompt != (char *) NULL)
 110     {
 111       int half_width = (TUI_DATA_WIN->generic.width - 2) / 2;
 112       int x_pos;
 113
 114       if (strlen (prompt) >= half_width)
 115         x_pos = 1;
 116       else
 117         x_pos = half_width - strlen (prompt);
 118       mvwaddstr (TUI_DATA_WIN->generic.handle,
 119                  (TUI_DATA_WIN->generic.height / 2),
 120                  x_pos,
 121                  prompt);
 122     }
 123   wrefresh (TUI_DATA_WIN->generic.handle);
 124 }
 125
 126
 127 /* This function displays the data that is in the data window's
 128    content.  It does not set the content.  */
 129 void
 130 tui_display_all_data (void)
 131 {
 132   if (TUI_DATA_WIN->generic.content_size <= 0)
 133     tui_erase_data_content (NO_DATA_STRING);
 134   else
 135     {
 136       tui_erase_data_content ((char *) NULL);
 137       tui_delete_data_content_windows ();
 138       tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 139       tui_display_registers_from (0);
 140
 141       /* Then display the other data.  */
 142       if (TUI_DATA_WIN->detail.data_display_info.data_content !=
 143           (tui_win_content) NULL &&
 144           TUI_DATA_WIN->detail.data_display_info.data_content_count > 0)
 145         {
 146         }
 147     }
 148 }
 149
 150
 151 /* Function to display the data starting at line, line_no, in the data
 152    window.  */
 153 void
 154 tui_display_data_from_line (int line_no)
 155 {
 156   int _line_no = line_no;
 157
 158   if (line_no < 0)
 159     _line_no = 0;
 160
 161   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 162
 163   /* There is no general data, force regs to display (if there are
 164      any).  */
 165   if (TUI_DATA_WIN->detail.data_display_info.data_content_count <= 0)
 166     tui_display_registers_from_line (_line_no, TRUE);
 167   else
 168     {
 169       int element_no, start_line_no;
 170       int regs_last_line = tui_last_regs_line_no ();
 171
 172
 173       /* Display regs if we can.  */
 174       if (tui_display_registers_from_line (_line_no, FALSE) < 0)
 175         { /* _line_no is past the regs display, so calc where the
 176              start data element is.  */
 177           if (regs_last_line < _line_no)
 178             { /* Figure out how many lines each element is to obtain
 179                  the start element_no.  */
 180             }
 181         }
 182       else
 183         { /* Calculate the starting element of the data display, given
 184              regs_last_line and how many lines each element is, up to
 185              _line_no.  */
 186         }
 187       /* Now display the data , starting at element_no.  */
 188     }
 189 }
 190
 191
 192 /* Display data starting at element element_no.  */
 193 void
 194 tui_display_data_from (int element_no, int reuse_windows)
 195 {
 196   int first_line = (-1);
 197
 198   if (element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 199     first_line = tui_line_from_reg_element_no (element_no);
 200   else
 201     { /* Calculate the first_line from the element number.  */
 202     }
 203
 204   if (first_line >= 0)
 205     {
 206       tui_erase_data_content ((char *) NULL);
 207       if (!reuse_windows)
 208         tui_delete_data_content_windows ();
 209       tui_display_data_from_line (first_line);
 210     }
 211 }
 212
 213
 214 /* Function to redisplay the contents of the data window.  */
 215 void
 216 tui_refresh_data_win (void)
 217 {
 218   tui_erase_data_content ((char *) NULL);
 219   if (TUI_DATA_WIN->generic.content_size > 0)
 220     {
 221       int first_element = tui_first_data_item_displayed ();
 222
 223       if (first_element >= 0)   /* Re-use existing windows.  */
 224         tui_display_data_from (first_element, TRUE);
 225     }
 226 }
 227
 228
 229 /* Function to check the data values and hilite any that have
 230    changed.  */
 231 void
 232 tui_check_data_values (struct frame_info *frame)
 233 {
 234   tui_check_register_values (frame);
 235
 236   /* Now check any other data values that there are.  */
 237   if (TUI_DATA_WIN != NULL && TUI_DATA_WIN->generic.is_visible)
 238     {
 239       int i;
 240
 241       for (i = 0; TUI_DATA_WIN->detail.data_display_info.data_content_count; i++)
 242         {
 243 #ifdef LATER
 244           tui_data_element_ptr data_element_ptr;
 245           struct tui_gen_win_info *data_item_win_ptr;
 246           Opaque new_value;
 247
 248           data_item_ptr = &TUI_DATA_WIN->detail.data_display_info.
 249             data_content[i]->which_element.data_window;
 250           data_element_ptr = &((tui_win_content)
 251                              data_item_win_ptr->content)[0]->which_element.data;
 252           if value
 253             has changed (data_element_ptr, frame, &new_value)
 254             {
 255               data_element_ptr->value = new_value;
 256               update the display with the new value, hiliting it.
 257             }
 258 #endif
 259         }
 260     }
 261 }
 262
 263
 264 /* Scroll the data window vertically forward or backward.  */
 265 void
 266 tui_vertical_data_scroll (enum tui_scroll_direction scroll_direction,
 267                           int num_to_scroll)
 268 {
 269   int first_element_no;
 270   int first_line = (-1);
 271
 272   first_element_no = tui_first_data_item_displayed ();
 273   if (first_element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 274     first_line = tui_line_from_reg_element_no (first_element_no);
 275   else
 276     { /* Calculate the first line from the element number which is in
 277         the general data content.  */
 278     }
 279
 280   if (first_line >= 0)
 281     {
 282       int last_element_no, last_line;
 283
 284       if (scroll_direction == FORWARD_SCROLL)
 285         first_line += num_to_scroll;
 286       else
 287         first_line -= num_to_scroll;
 288       tui_erase_data_content ((char *) NULL);
 289       tui_delete_data_content_windows ();
 290       tui_display_data_from_line (first_line);
 291     }
 292 }
 293
 294
 295 /*****************************************
 296 ** STATIC LOCAL FUNCTIONS               **
 297 ******************************************/