gdb/tui/tui-command.c

   1 /* Specific command window processing.
   2
   3    Copyright (C) 1998-2019 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-win.h"
  26 #include "tui/tui-io.h"
  27 #include "tui/tui-command.h"
  28
  29 #include "gdb_curses.h"
  30 /*****************************************
  31 ** STATIC LOCAL FUNCTIONS FORWARD DECLS    **
  32 ******************************************/
  33
  34
  35
  36 /*****************************************
  37 ** PUBLIC FUNCTIONS                        **
  38 ******************************************/
  39
  40 /* Dispatch the correct tui function based upon the control
  41    character.  */
  42 unsigned int
  43 tui_dispatch_ctrl_char (unsigned int ch)
  44 {
  45   struct tui_win_info *win_info = tui_win_with_focus ();
  46
  47   /* Handle the CTRL-L refresh for each window.  */
  48   if (ch == '\f')
  49     tui_refresh_all_win ();
  50
  51   /* If no window has the focus, or if the focus window can't scroll,
  52      just pass the character through.  */
  53   if (win_info == NULL || !win_info->can_scroll ())
  54     return ch;
  55
  56   switch (ch)
  57     {
  58     case KEY_NPAGE:
  59       win_info->forward_scroll (0);
  60       break;
  61     case KEY_PPAGE:
  62       win_info->backward_scroll (0);
  63       break;
  64     case KEY_DOWN:
  65     case KEY_SF:
  66       win_info->forward_scroll (1);
  67       break;
  68     case KEY_UP:
  69     case KEY_SR:
  70       win_info->backward_scroll (1);
  71       break;
  72     case KEY_RIGHT:
  73       win_info->left_scroll (1);
  74       break;
  75     case KEY_LEFT:
  76       win_info->right_scroll (1);
  77       break;
  78     case '\f':
  79       break;
  80     default:
  81       /* We didn't recognize the character as a control character, so pass it
  82          through.  */
  83       return ch;
  84     }
  85
  86   /* We intercepted the control character, so return 0 (which readline
  87      will interpret as a no-op).  */
  88   return 0;
  89 }
  90
  91 /* See tui-command.h.  */
  92
  93 void
  94 tui_refresh_cmd_win (void)
  95 {
  96   WINDOW *w = TUI_CMD_WIN->handle;
  97
  98   wrefresh (w);
  99
 100   /* FIXME: It's not clear why this is here.
 101      It was present in the original tui_puts code and is kept in order to
 102      not introduce some subtle breakage.  */
 103   fflush (stdout);
 104 }