gdb/tui/tui-windata.c

   1 /* Data/register window display.
   2
   3    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009
   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 3 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, see <http://www.gnu.org/licenses/>.  */
  22
  23 #include "defs.h"
  24 #include "tui/tui.h"
  25 #include "tui/tui-data.h"
  26 #include "tui/tui-wingeneral.h"
  27 #include "tui/tui-regs.h"
  28 #include "tui/tui-windata.h"
  29
  30 #include "gdb_string.h"
  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;
  54        i < TUI_DATA_WIN->generic.content_size && element_no < 0;
  55        i++)
  56     {
  57       struct tui_gen_win_info *data_item_win;
  58
  59       data_item_win = &((tui_win_content)
  60                         TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
  61       if (data_item_win->handle != (WINDOW *) NULL
  62           && data_item_win->is_visible)
  63         element_no = i;
  64     }
  65
  66   return element_no;
  67 }
  68
  69
  70 /* Answer the index of the first element in line_no.  If line_no is
  71    past the data area (-1) is returned.  */
  72 int
  73 tui_first_data_element_no_in_line (int line_no)
  74 {
  75   int first_element_no = (-1);
  76
  77   /* First see if there is a register on line_no, and if so, set the
  78      first element number.  */
  79   if ((first_element_no = tui_first_reg_element_no_inline (line_no)) == -1)
  80     { /* Looking at the general data, the 1st element on line_no.  */
  81     }
  82
  83   return first_element_no;
  84 }
  85
  86
  87 /* Function to delete all the item windows in the data window.  This
  88    is usually done when the data window is scrolled.  */
  89 void
  90 tui_delete_data_content_windows (void)
  91 {
  92   int i;
  93   struct tui_gen_win_info *data_item_win_ptr;
  94
  95   for (i = 0; (i < TUI_DATA_WIN->generic.content_size); i++)
  96     {
  97       data_item_win_ptr = &((tui_win_content)
  98                             TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
  99       tui_delete_win (data_item_win_ptr->handle);
 100       data_item_win_ptr->handle = (WINDOW *) NULL;
 101       data_item_win_ptr->is_visible = FALSE;
 102     }
 103 }
 104
 105
 106 void
 107 tui_erase_data_content (char *prompt)
 108 {
 109   werase (TUI_DATA_WIN->generic.handle);
 110   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 111   if (prompt != (char *) NULL)
 112     {
 113       int half_width = (TUI_DATA_WIN->generic.width - 2) / 2;
 114       int x_pos;
 115
 116       if (strlen (prompt) >= half_width)
 117         x_pos = 1;
 118       else
 119         x_pos = half_width - strlen (prompt);
 120       mvwaddstr (TUI_DATA_WIN->generic.handle,
 121                  (TUI_DATA_WIN->generic.height / 2),
 122                  x_pos,
 123                  prompt);
 124     }
 125   wrefresh (TUI_DATA_WIN->generic.handle);
 126 }
 127
 128
 129 /* This function displays the data that is in the data window's
 130    content.  It does not set the content.  */
 131 void
 132 tui_display_all_data (void)
 133 {
 134   if (TUI_DATA_WIN->generic.content_size <= 0)
 135     tui_erase_data_content (NO_DATA_STRING);
 136   else
 137     {
 138       tui_erase_data_content ((char *) NULL);
 139       tui_delete_data_content_windows ();
 140       tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 141       tui_display_registers_from (0);
 142
 143       /* Then display the other data.  */
 144       if (TUI_DATA_WIN->detail.data_display_info.data_content !=
 145           (tui_win_content) NULL
 146           && TUI_DATA_WIN->detail.data_display_info.data_content_count > 0)
 147         {
 148         }
 149     }
 150 }
 151
 152
 153 /* Function to display the data starting at line, line_no, in the data
 154    window.  */
 155 void
 156 tui_display_data_from_line (int line_no)
 157 {
 158   int _line_no = line_no;
 159
 160   if (line_no < 0)
 161     _line_no = 0;
 162
 163   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 164
 165   /* There is no general data, force regs to display (if there are
 166      any).  */
 167   if (TUI_DATA_WIN->detail.data_display_info.data_content_count <= 0)
 168     tui_display_registers_from_line (_line_no, TRUE);
 169   else
 170     {
 171       int element_no, start_line_no;
 172       int regs_last_line = tui_last_regs_line_no ();
 173
 174
 175       /* Display regs if we can.  */
 176       if (tui_display_registers_from_line (_line_no, FALSE) < 0)
 177         { /* _line_no is past the regs display, so calc where the
 178              start data element is.  */
 179           if (regs_last_line < _line_no)
 180             { /* Figure out how many lines each element is to obtain
 181                  the start element_no.  */
 182             }
 183         }
 184       else
 185         { /* Calculate the starting element of the data display, given
 186              regs_last_line and how many lines each element is, up to
 187              _line_no.  */
 188         }
 189       /* Now display the data , starting at element_no.  */
 190     }
 191 }
 192
 193
 194 /* Display data starting at element element_no.  */
 195 void
 196 tui_display_data_from (int element_no, int reuse_windows)
 197 {
 198   int first_line = (-1);
 199
 200   if (element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 201     first_line = tui_line_from_reg_element_no (element_no);
 202   else
 203     { /* Calculate the first_line from the element number.  */
 204     }
 205
 206   if (first_line >= 0)
 207     {
 208       tui_erase_data_content ((char *) NULL);
 209       if (!reuse_windows)
 210         tui_delete_data_content_windows ();
 211       tui_display_data_from_line (first_line);
 212     }
 213 }
 214
 215
 216 /* Function to redisplay the contents of the data window.  */
 217 void
 218 tui_refresh_data_win (void)
 219 {
 220   tui_erase_data_content ((char *) NULL);
 221   if (TUI_DATA_WIN->generic.content_size > 0)
 222     {
 223       int first_element = tui_first_data_item_displayed ();
 224
 225       if (first_element >= 0)   /* Re-use existing windows.  */
 226         tui_display_data_from (first_element, TRUE);
 227     }
 228 }
 229
 230
 231 /* Function to check the data values and hilite any that have
 232    changed.  */
 233 void
 234 tui_check_data_values (struct frame_info *frame)
 235 {
 236   tui_check_register_values (frame);
 237
 238   /* Now check any other data values that there are.  */
 239   if (TUI_DATA_WIN != NULL && TUI_DATA_WIN->generic.is_visible)
 240     {
 241       int i;
 242
 243       for (i = 0;
 244            TUI_DATA_WIN->detail.data_display_info.data_content_count;
 245            i++)
 246         {
 247 #ifdef LATER
 248           tui_data_element_ptr data_element_ptr;
 249           struct tui_gen_win_info *data_item_win_ptr;
 250           Opaque new_value;
 251
 252           data_item_ptr = &TUI_DATA_WIN->detail.data_display_info.
 253             data_content[i]->which_element.data_window;
 254           data_element_ptr = &((tui_win_content)
 255                              data_item_win_ptr->content)[0]->which_element.data;
 256           if value
 257             has changed (data_element_ptr, frame, &new_value)
 258             {
 259               data_element_ptr->value = new_value;
 260               update the display with the new value, hiliting it.
 261             }
 262 #endif
 263         }
 264     }
 265 }
 266
 267
 268 /* Scroll the data window vertically forward or backward.  */
 269 void
 270 tui_vertical_data_scroll (enum tui_scroll_direction scroll_direction,
 271                           int num_to_scroll)
 272 {
 273   int first_element_no;
 274   int first_line = (-1);
 275
 276   first_element_no = tui_first_data_item_displayed ();
 277   if (first_element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 278     first_line = tui_line_from_reg_element_no (first_element_no);
 279   else
 280     { /* Calculate the first line from the element number which is in
 281         the general data content.  */
 282     }
 283
 284   if (first_line >= 0)
 285     {
 286       int last_element_no, last_line;
 287
 288       if (scroll_direction == FORWARD_SCROLL)
 289         first_line += num_to_scroll;
 290       else
 291         first_line -= num_to_scroll;
 292       tui_erase_data_content ((char *) NULL);
 293       tui_delete_data_content_windows ();
 294       tui_display_data_from_line (first_line);
 295     }
 296 }
 297
 298
 299 /*****************************************
 300 ** STATIC LOCAL FUNCTIONS               **
 301 ******************************************/