gdb/tui/tui-windata.c

   1 /* Data/register window display.
   2
   3    Copyright (C) 1998-2004, 2007-2012 Free Software Foundation, Inc.
   4
   5    Contributed by Hewlett-Packard Company.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include "defs.h"
  23 #include "tui/tui.h"
  24 #include "tui/tui-data.h"
  25 #include "tui/tui-wingeneral.h"
  26 #include "tui/tui-regs.h"
  27 #include "tui/tui-windata.h"
  28
  29 #include "gdb_string.h"
  30 #include "gdb_curses.h"
  31
  32
  33 /*****************************************
  34 ** STATIC LOCAL FUNCTIONS FORWARD DECLS    **
  35 ******************************************/
  36
  37
  38
  39 /*****************************************
  40 ** PUBLIC FUNCTIONS                        **
  41 ******************************************/
  42
  43
  44 /* Answer the index first element displayed.  If none are displayed,
  45    then return (-1).  */
  46 int
  47 tui_first_data_item_displayed (void)
  48 {
  49   int element_no = (-1);
  50   int i;
  51
  52   for (i = 0;
  53        i < TUI_DATA_WIN->generic.content_size && element_no < 0;
  54        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
  61           && data_item_win->is_visible)
  62         element_no = i;
  63     }
  64
  65   return element_no;
  66 }
  67
  68
  69 /* Answer the index of the first element in line_no.  If line_no is
  70    past the data area (-1) is returned.  */
  71 int
  72 tui_first_data_element_no_in_line (int line_no)
  73 {
  74   int first_element_no = (-1);
  75
  76   /* First see if there is a register on line_no, and if so, set the
  77      first element number.  */
  78   if ((first_element_no = tui_first_reg_element_no_inline (line_no)) == -1)
  79     { /* Looking at the general data, the 1st element on line_no.  */
  80     }
  81
  82   return first_element_no;
  83 }
  84
  85
  86 /* Function to delete all the item windows in the data window.  This
  87    is usually done when the data window is scrolled.  */
  88 void
  89 tui_delete_data_content_windows (void)
  90 {
  91   int i;
  92   struct tui_gen_win_info *data_item_win_ptr;
  93
  94   for (i = 0; (i < TUI_DATA_WIN->generic.content_size); i++)
  95     {
  96       data_item_win_ptr = &((tui_win_content)
  97                             TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
  98       tui_delete_win (data_item_win_ptr->handle);
  99       data_item_win_ptr->handle = (WINDOW *) NULL;
 100       data_item_win_ptr->is_visible = FALSE;
 101     }
 102 }
 103
 104
 105 void
 106 tui_erase_data_content (char *prompt)
 107 {
 108   werase (TUI_DATA_WIN->generic.handle);
 109   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 110   if (prompt != (char *) NULL)
 111     {
 112       int half_width = (TUI_DATA_WIN->generic.width - 2) / 2;
 113       int x_pos;
 114
 115       if (strlen (prompt) >= half_width)
 116         x_pos = 1;
 117       else
 118         x_pos = half_width - strlen (prompt);
 119       mvwaddstr (TUI_DATA_WIN->generic.handle,
 120                  (TUI_DATA_WIN->generic.height / 2),
 121                  x_pos,
 122                  prompt);
 123     }
 124   wrefresh (TUI_DATA_WIN->generic.handle);
 125 }
 126
 127
 128 /* This function displays the data that is in the data window's
 129    content.  It does not set the content.  */
 130 void
 131 tui_display_all_data (void)
 132 {
 133   if (TUI_DATA_WIN->generic.content_size <= 0)
 134     tui_erase_data_content (NO_DATA_STRING);
 135   else
 136     {
 137       tui_erase_data_content ((char *) NULL);
 138       tui_delete_data_content_windows ();
 139       tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 140       tui_display_registers_from (0);
 141
 142       /* Then display the other data.  */
 143       if (TUI_DATA_WIN->detail.data_display_info.data_content !=
 144           (tui_win_content) NULL
 145           && TUI_DATA_WIN->detail.data_display_info.data_content_count > 0)
 146         {
 147         }
 148     }
 149 }
 150
 151
 152 /* Function to display the data starting at line, line_no, in the data
 153    window.  */
 154 void
 155 tui_display_data_from_line (int line_no)
 156 {
 157   int _line_no = line_no;
 158
 159   if (line_no < 0)
 160     _line_no = 0;
 161
 162   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 163
 164   /* There is no general data, force regs to display (if there are
 165      any).  */
 166   if (TUI_DATA_WIN->detail.data_display_info.data_content_count <= 0)
 167     tui_display_registers_from_line (_line_no, TRUE);
 168   else
 169     {
 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;
 242            TUI_DATA_WIN->detail.data_display_info.data_content_count;
 243            i++)
 244         {
 245 #ifdef LATER
 246           tui_data_element_ptr data_element_ptr;
 247           struct tui_gen_win_info *data_item_win_ptr;
 248           Opaque new_value;
 249
 250           data_item_ptr = &TUI_DATA_WIN->detail.data_display_info.
 251             data_content[i]->which_element.data_window;
 252           data_element_ptr = &((tui_win_content)
 253                                data_item_win_ptr->content)[0]->which_element.data;
 254           if value
 255             has changed (data_element_ptr, frame, &new_value)
 256             {
 257               data_element_ptr->value = new_value;
 258               update the display with the new value, hiliting it.
 259             }
 260 #endif
 261         }
 262     }
 263 }
 264
 265
 266 /* Scroll the data window vertically forward or backward.  */
 267 void
 268 tui_vertical_data_scroll (enum tui_scroll_direction scroll_direction,
 269                           int num_to_scroll)
 270 {
 271   int first_element_no;
 272   int first_line = (-1);
 273
 274   first_element_no = tui_first_data_item_displayed ();
 275   if (first_element_no
 276       < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 277     first_line = tui_line_from_reg_element_no (first_element_no);
 278   else
 279     { /* Calculate the first line from the element number which is in
 280         the general data content.  */
 281     }
 282
 283   if (first_line >= 0)
 284     {
 285       if (scroll_direction == FORWARD_SCROLL)
 286         first_line += num_to_scroll;
 287       else
 288         first_line -= num_to_scroll;
 289       tui_erase_data_content ((char *) NULL);
 290       tui_delete_data_content_windows ();
 291       tui_display_data_from_line (first_line);
 292     }
 293 }
 294
 295
 296 /*****************************************
 297 ** STATIC LOCAL FUNCTIONS               **
 298 ******************************************/