gdb/tui/tui-windata.c

   1 /* Data/register window display.
   2
   3    Copyright (C) 1998-2015 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 #include "gdb_curses.h"
  29
  30
  31 /*****************************************
  32 ** STATIC LOCAL FUNCTIONS FORWARD DECLS    **
  33 ******************************************/
  34
  35
  36
  37 /*****************************************
  38 ** PUBLIC FUNCTIONS                        **
  39 ******************************************/
  40
  41
  42 /* Answer the index first element displayed.  If none are displayed,
  43    then return (-1).  */
  44 int
  45 tui_first_data_item_displayed (void)
  46 {
  47   int element_no = (-1);
  48   int i;
  49
  50   for (i = 0;
  51        i < TUI_DATA_WIN->generic.content_size && element_no < 0;
  52        i++)
  53     {
  54       struct tui_gen_win_info *data_item_win;
  55
  56       data_item_win = &((tui_win_content)
  57                         TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
  58       if (data_item_win->handle != (WINDOW *) NULL
  59           && 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   /* First see if there is a register on line_no, and if so, set the
  75      first element number.  */
  76   if ((first_element_no = tui_first_reg_element_no_inline (line_no)) == -1)
  77     { /* Looking at the general data, the 1st element on line_no.  */
  78     }
  79
  80   return first_element_no;
  81 }
  82
  83
  84 /* Function to delete all the item windows in the data window.  This
  85    is usually done when the data window is scrolled.  */
  86 void
  87 tui_delete_data_content_windows (void)
  88 {
  89   int i;
  90   struct tui_gen_win_info *data_item_win_ptr;
  91
  92   for (i = 0; (i < TUI_DATA_WIN->generic.content_size); i++)
  93     {
  94       data_item_win_ptr = &((tui_win_content)
  95                             TUI_DATA_WIN->generic.content)[i]->which_element.data_window;
  96       tui_delete_win (data_item_win_ptr->handle);
  97       data_item_win_ptr->handle = (WINDOW *) NULL;
  98       data_item_win_ptr->is_visible = FALSE;
  99     }
 100 }
 101
 102
 103 void
 104 tui_erase_data_content (char *prompt)
 105 {
 106   werase (TUI_DATA_WIN->generic.handle);
 107   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 108   if (prompt != (char *) NULL)
 109     {
 110       int half_width = (TUI_DATA_WIN->generic.width - 2) / 2;
 111       int x_pos;
 112
 113       if (strlen (prompt) >= half_width)
 114         x_pos = 1;
 115       else
 116         x_pos = half_width - strlen (prompt);
 117       mvwaddstr (TUI_DATA_WIN->generic.handle,
 118                  (TUI_DATA_WIN->generic.height / 2),
 119                  x_pos,
 120                  prompt);
 121     }
 122   wrefresh (TUI_DATA_WIN->generic.handle);
 123 }
 124
 125
 126 /* This function displays the data that is in the data window's
 127    content.  It does not set the content.  */
 128 void
 129 tui_display_all_data (void)
 130 {
 131   if (TUI_DATA_WIN->generic.content_size <= 0)
 132     tui_erase_data_content (NO_DATA_STRING);
 133   else
 134     {
 135       tui_erase_data_content ((char *) NULL);
 136       tui_delete_data_content_windows ();
 137       tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 138       tui_display_registers_from (0);
 139
 140       /* Then display the other data.  */
 141       if (TUI_DATA_WIN->detail.data_display_info.data_content !=
 142           (tui_win_content) NULL
 143           && TUI_DATA_WIN->detail.data_display_info.data_content_count > 0)
 144         {
 145         }
 146     }
 147 }
 148
 149
 150 /* Function to display the data starting at line, line_no, in the data
 151    window.  */
 152 void
 153 tui_display_data_from_line (int line_no)
 154 {
 155   int _line_no = line_no;
 156
 157   if (line_no < 0)
 158     _line_no = 0;
 159
 160   tui_check_and_display_highlight_if_needed (TUI_DATA_WIN);
 161
 162   /* There is no general data, force regs to display (if there are
 163      any).  */
 164   if (TUI_DATA_WIN->detail.data_display_info.data_content_count <= 0)
 165     tui_display_registers_from_line (_line_no, TRUE);
 166   else
 167     {
 168       int regs_last_line = tui_last_regs_line_no ();
 169
 170
 171       /* Display regs if we can.  */
 172       if (tui_display_registers_from_line (_line_no, FALSE) < 0)
 173         { /* _line_no is past the regs display, so calc where the
 174              start data element is.  */
 175           if (regs_last_line < _line_no)
 176             { /* Figure out how many lines each element is to obtain
 177                  the start element_no.  */
 178             }
 179         }
 180       else
 181         { /* Calculate the starting element of the data display, given
 182              regs_last_line and how many lines each element is, up to
 183              _line_no.  */
 184         }
 185       /* Now display the data , starting at element_no.  */
 186     }
 187 }
 188
 189
 190 /* Display data starting at element element_no.  */
 191 void
 192 tui_display_data_from (int element_no, int reuse_windows)
 193 {
 194   int first_line = (-1);
 195
 196   if (element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 197     first_line = tui_line_from_reg_element_no (element_no);
 198   else
 199     { /* Calculate the first_line from the element number.  */
 200     }
 201
 202   if (first_line >= 0)
 203     {
 204       tui_erase_data_content ((char *) NULL);
 205       if (!reuse_windows)
 206         tui_delete_data_content_windows ();
 207       tui_display_data_from_line (first_line);
 208     }
 209 }
 210
 211
 212 /* Function to redisplay the contents of the data window.  */
 213 void
 214 tui_refresh_data_win (void)
 215 {
 216   tui_erase_data_content ((char *) NULL);
 217   if (TUI_DATA_WIN->generic.content_size > 0)
 218     {
 219       int first_element = tui_first_data_item_displayed ();
 220
 221       if (first_element >= 0)   /* Re-use existing windows.  */
 222         tui_display_data_from (first_element, TRUE);
 223     }
 224 }
 225
 226
 227 /* Function to check the data values and hilite any that have
 228    changed.  */
 229 void
 230 tui_check_data_values (struct frame_info *frame)
 231 {
 232   tui_check_register_values (frame);
 233
 234   /* Now check any other data values that there are.  */
 235   if (TUI_DATA_WIN != NULL && TUI_DATA_WIN->generic.is_visible)
 236     {
 237       int i;
 238
 239       for (i = 0;
 240            TUI_DATA_WIN->detail.data_display_info.data_content_count;
 241            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 newobj 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
 274       < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
 275     first_line = tui_line_from_reg_element_no (first_element_no);
 276   else
 277     { /* Calculate the first line from the element number which is in
 278         the general data content.  */
 279     }
 280
 281   if (first_line >= 0)
 282     {
 283       if (scroll_direction == FORWARD_SCROLL)
 284         first_line += num_to_scroll;
 285       else
 286         first_line -= num_to_scroll;
 287       tui_erase_data_content ((char *) NULL);
 288       tui_delete_data_content_windows ();
 289       tui_display_data_from_line (first_line);
 290     }
 291 }
 292
 293
 294 /*****************************************
 295 ** STATIC LOCAL FUNCTIONS               **
 296 ******************************************/